National Library of Energy BETA

Sample records for diesel particulate filters

  1. Electrically-Assisted Diesel Particulate Filter Regeneration...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    More Documents & Publications Substrate Studies of an Electrically-Assisted Diesel Particulate Filter Electrically-Assisted Diesel Particulate Filter Regeneration...

  2. Pleated Ceramic Fiber Diesel Particulate Filter | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Pleated Ceramic Fiber Diesel Particulate Filter Pleated Ceramic Fiber Diesel Particulate Filter 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters...

  3. Diesel Particulate Filters: Market Introducution in Europe |...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Filters: Market Introducution in Europe Diesel Particulate Filters: Market Introducution in Europe 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Aaqius and...

  4. Electrically-Assisted Diesel Particulate Filter Regeneration...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Evaluation pm041lance2011p.pdf More Documents & Publications Electrically-Assisted Diesel Particulate Filter Regeneration Substrate Studies of an Electrically-Assisted Diesel...

  5. Value Analysis of Alternative Diesel Particulate Filter (DPF...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Value Analysis of Alternative Diesel Particulate Filter (DPF) Substrates for Future Diesel Aftertreatment Systems Value Analysis of Alternative Diesel Particulate Filter (DPF)...

  6. A Standard Soot Generator for Diesel Particulate Filter Testing...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    A Standard Soot Generator for Diesel Particulate Filter Testing A Standard Soot Generator for Diesel Particulate Filter Testing Poster presentation at the 2007 Diesel...

  7. Blowers for Air Assisted Diesel Particulate Filter Regeneration...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Blowers for Air Assisted Diesel Particulate Filter Regeneration Blowers for Air Assisted Diesel Particulate Filter Regeneration Prototypes of a new series of high-pressure,...

  8. New Cordierite Diesel Particulate Filters for Catalyzed and Non...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Cordierite Diesel Particulate Filters for Catalyzed and Non-Catalyzed Applications New Cordierite Diesel Particulate Filters for Catalyzed and Non-Catalyzed Applications 2003 DEER...

  9. CARB Verification of Catalyzed Diesel Particulate Filters for...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    CARB Verification of Catalyzed Diesel Particulate Filters for Emergency Generator Sets CARB Verification of Catalyzed Diesel Particulate Filters for Emergency Generator Sets 2005...

  10. Neutron Imaging of Diesel Particulate Filters | Department of...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Neutron Imaging of Diesel Particulate Filters Neutron computed tomography shows soot and ash loading in a cordierite diesel particulate filter deer09bilheux.pdf More Documents &...

  11. Radio Frequency Diesel Particulate Filter Sensor Reduces Fuel...

    Office of Environmental Management (EM)

    Radio Frequency Diesel Particulate Filter Sensor Reduces Fuel Consumption, Wins R&D 100 Award Radio Frequency Diesel Particulate Filter Sensor Reduces Fuel Consumption, Wins R&D...

  12. Diesel particulate filter with zoned resistive heater

    DOE Patents [OSTI]

    Gonze, Eugene V [Pinckney, MI

    2011-03-08

    A diesel particulate filter assembly comprises a diesel particulate filter (DPF) and a heater assembly. The DPF filters a particulate from exhaust produced by an engine. The heater assembly has a first metallic layer that is applied to the DPF, a resistive layer that is applied to the first metallic layer, and a second metallic layer that is applied to the resistive layer. The second metallic layer is etched to form a plurality of zones.

  13. Electrical diesel particulate filter (DPF) regeneration

    DOE Patents [OSTI]

    Gonze, Eugene V; Ament, Frank

    2013-12-31

    An exhaust system that processes exhaust generated by an engine includes a diesel particulate filter (DPF) that is disposed downstream of the engine and that filters particulates from the exhaust. An electrical heater is disposed upstream of the DPF and selectively heats the exhaust to initiate combustion of the particulates within the exhaust as it passes therethrough. Heat generated by combustion of the particulates induces combustion of particulates within the DPF.

  14. An improved visualization of diesel particulate filter/

    E-Print Network [OSTI]

    Boehm, Kevin (Kevin W.)

    2011-01-01

    The prevalence of diesel particulate filters (DPF) is increasing as emissions standards worldwide evolve to match current technologies. Since the first application of DPFs in the 1980's, PM trapping effectiveness has ...

  15. Partial-Flow Diesel Particulate Filter of Sintered Metal Fiber...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Partial-Flow Diesel Particulate Filter of Sintered Metal Fiber Fleece Partial-Flow Diesel Particulate Filter of Sintered Metal Fiber Fleece Poster presented at the 16th Directions...

  16. Improvement and Simplification of Diesel Particulate Filter System...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Improvement and Simplification of Diesel Particulate Filter System using a Ceria-Based Fuel-Borne Catalyst in Serial Applications Improvement and Simplification of Diesel...

  17. Effect of Biodiesel Blends on Diesel Particulate Filter Performance

    SciTech Connect (OSTI)

    Williams, A.; McCormick, R. L.; Hayes, R. R.; Ireland, J.; Fang, H. L.

    2006-11-01

    Presents results of tests of ultra-low sulfur diesel blended with soy-biodiesel at 5 percent using a Cummins ISB engine with a diesel particulate filter.

  18. Predicting Thermal Stress in Diesel Particulate Filters | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    More Documents & Publications Diesel Emission Control Review Substrate Studies of an Electrically-Assisted Diesel Particulate Filter Neutron Imaging of Advanced Engine Technologies...

  19. Expanded Capacity Microwave-Cleaned Diesel Particulate Filter...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Diesel Particulate Filter 2002 DEER Conference Presentation: Industrial Ceramic Solutions, LLC 2002deernixdorf.pdf More Documents & Publications Ultra-Lite Diesel...

  20. Neutron Imaging of Diesel Particulate Filters

    SciTech Connect (OSTI)

    Strzelec, Andrea; Bilheux, Hassina Z; FINNEY, Charles E A; Daw, C Stuart; Foster, Prof. Dave; Rutland, Prof. Christopher J.; Schillinger, Burkhard; Schulz, Michael

    2009-01-01

    This article presents nondestructive neutron computed tomography (nCT) measurements of Diesel Particulate Filters (DPFs) as a method to measure ash and soot loading in the filters. Uncatalyzed and unwashcoated 200cpsi cordierite DPFs exposed to 100% biodiesel (B100) exhaust and conventional ultra low sulfur 2007 certification diesel (ULSD) exhaust at one speed-load point (1500rpm, 2.6bar BMEP) are compared to a brand new (never exposed) filter. Precise structural information about the substrate as well as an attempt to quantify soot and ash loading in the channel of the DPF illustrates the potential strength of the neutron imaging technique.

  1. Diesel Particulate Filter: A Success for Faurecia Exhaust Systems...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Filter: A Success for Faurecia Exhaust Systems Diesel Particulate Filter: A Success for Faurecia Exhaust Systems 2003 DEER Conference Presentation: Faurecia Exhaust Systems...

  2. Generator powered electrically heated diesel particulate filter

    DOE Patents [OSTI]

    Gonze, Eugene V; Paratore, Jr., Michael J

    2014-03-18

    A control circuit for a vehicle powertrain includes a switch that selectivity interrupts current flow between a first terminal and a second terminal. A first power source provides power to the first terminal and a second power source provides power to the second terminal and to a heater of a heated diesel particulate filter (DPF). The switch is opened during a DPF regeneration cycle to prevent the first power source from being loaded by the heater while the heater is energized.

  3. Durability of Diesel Engine Particulate Filters CRADA No. ORNL...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Filters CRADA No. ORNL-04-0692 with Cummins Inc. Durability of Diesel Engine Particulate Filters CRADA No. ORNL-04-0692 with Cummins Inc. Presentation from the U.S. DOE Office of...

  4. Diesel Particulate Filters and NO2 Emission Limits | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Filters and NO2 Emission Limits Diesel Particulate Filters and NO2 Emission Limits EPAs New air quality standards for NO2 will impact future DPF designs deer09ibrahim.pdf More...

  5. Modeling and interpreting the observed effects of ash on diesel particulate filter performance and regeneration

    E-Print Network [OSTI]

    Wang, Yujun, Ph. D. Massachusetts Institute of Technology

    2014-01-01

    Diesel particulate filters (DPF) are devices that physically capture diesel particulates to prevent their release to the atmosphere. Diesel particulate filters have seen widespread use in on- and off-road applications as ...

  6. Zone heated diesel particulate filter electrical connection

    DOE Patents [OSTI]

    Gonze, Eugene V. (Pinckney, MI); Paratore, Jr., Michael J. (Howell, MI)

    2010-03-30

    An electrical connection system for a particulate filter is provided. The system includes: a particulate filter (PF) disposed within an outer shell wherein the PF is segmented into a plurality of heating zones; an outer mat disposed between the particulate filter and the outer shell; an electrical connector coupled to the outer shell of the PF; and a plurality of printed circuit connections that extend along the outer surface of the PF from the electrical connector to the plurality of heating zones.

  7. Analysis of characteristic of microwave regeneration for diesel particulate filter

    SciTech Connect (OSTI)

    Ning Zhi; Zhang Guanglong; Lu Yong; Liu Junmin; Gao Xiyan; Liang Iunhui; Chen Jiahua [Dalian Univ. of Technology (China)

    1995-12-31

    The mathematical model for the microwave regeneration of diesel particulate filter is proposed according to the characteristic of microwave regeneration process. The model is used to calculate the temperature field, distribution of particulate and density field of oxygen in the filter during the process of regeneration with typical ceramic foam particulate filter data. The parametric study demonstrates how some of the main parameters, such as microwave attenuation constant of the filter, filter particulate loading, the power and distribution of microwave energy and so on, affect the efficiency of regeneration, the maximum filter temperature and regeneration duration. The results show that it is possible to regenerate the diesel particulate filters in certain conditions by using microwave energy. This paper can give one a whole understanding to several main factors that have effects on the process of microwave regeneration and provide a theoretical basis for the optimal design of the microwave regeneration system.

  8. Testing an Active Diesel Particulate Filter on a 2-Cycle Marine...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    an Active Diesel Particulate Filter on a 2-Cycle Marine Engine Testing an Active Diesel Particulate Filter on a 2-Cycle Marine Engine Presentation given at DEER 2006, August 20-24,...

  9. 2008-01-0333 Detailed Effects of a Diesel Particulate Filter on the Reduction

    E-Print Network [OSTI]

    Wu, Mingshen

    2008-01-0333 Detailed Effects of a Diesel Particulate Filter on the Reduction of Chemical Species of Wisconsin-Madison Copyright © 2008 SAE International ABSTRACT Diesel particulate filters are designed to reduce the mass emissions of diesel particulate matter and have been proven to be effective

  10. The effect of lubricant derived ash on the catalytic activity of diesel particulate filters

    E-Print Network [OSTI]

    Murray, Timothy Quinn

    2014-01-01

    A diesel particulate filter (DPF) is an aftertreatment device used to remove hazardous particulate matter (PM) from diesel engine exhaust. Modem emission restrictions have limited the acceptable amount of PM output by ...

  11. Development of diesel particulate filter made of porous metal

    SciTech Connect (OSTI)

    Matsunuma, Kenji; Ihara, Tomohiko; Hanamoto, Yuichi; Nakajima, Shiro; Okamoto, Satoru

    1996-09-01

    Pollution is worsening in cities. The exhaust gas from vehicles is the main cause of air pollution in cities. The major drawback of the diesel engine is the Particulate Matter (PM) contained in the exhaust fumes which is also said to lead to cancer. For about 20 years many tests have been conducted in order to reduce PM in diesel exhaust gas. However the exhaust gas in present diesel engines contains a significant amount of PM. This is because there is no practical material for the Diesel Particulate Filter (DPF). Conventional ceramic materials have problems such as cracking and melting during regeneration and conventional metal materials lack adequate corrosion resistance for practical use. The authors present a new type of DPF made of metal porous matter (Celmet) which is designed with a thermal construction and simple control system in order to solve the problem of diesel exhaust gas. As metal porous matter has low pressure loss per unit filter area during filtering, two-cylinder filters have similar trapping performance to the honeycomb type filter such as pressure loss and trapping efficiency, In this paper, 2,800--3,400cc diesel engines were used. Then a cycle of collection and regeneration with an electric heater and 12V battery was performed under several conditions on the engine bench and trapping efficiency and pressure loss were measured. It was confirmed that this new type DPF has good practical use in automobiles. Tests on forklifts were also performed. In a simple control system, this DPF can be applied to practical use. It is trouble-free for 6 months. The total performance of DPF for vehicles such as forklifts and heavy duty vehicles and the possibilities for other practical uses was mainly discussed.

  12. Fuel Efficient Diesel Particulate Filter (DPF) Modeling and Development

    SciTech Connect (OSTI)

    Stewart, Mark L.; Gallant, Thomas R.; Kim, Do Heui; Maupin, Gary D.; Zelenyuk, Alla

    2010-08-01

    The project described in this report seeks to promote effective diesel particulate filter technology with minimum fuel penalty by enhancing fundamental understanding of filtration mechanisms through targeted experiments and computer simulations. The overall backpressure of a filtration system depends upon complex interactions of particulate matter and ash with the microscopic pores in filter media. Better characterization of these phenomena is essential for exhaust system optimization. The acicular mullite (ACM) diesel particulate filter substrate is under continuing development by Dow Automotive. ACM is made up of long mullite crystals which intersect to form filter wall framework and protrude from the wall surface into the DPF channels. ACM filters have been demonstrated to effectively remove diesel exhaust particles while maintaining relatively low backpressure. Modeling approaches developed for more conventional ceramic filter materials, such as silicon carbide and cordierite, have been difficult to apply to ACM because of properties arising from its unique microstructure. Penetration of soot into the high-porosity region of projecting crystal structures leads to a somewhat extended depth filtration mode, but with less dramatic increases in pressure drop than are normally observed during depth filtration in cordierite or silicon carbide filters. Another consequence is greater contact between the soot and solid surfaces, which may enhance the action of some catalyst coatings in filter regeneration. The projecting crystals appear to provide a two-fold benefit for maintaining low backpressures during filter loading: they help prevent soot from being forced into the throats of pores in the lower porosity region of the filter wall, and they also tend to support the forming filter cake, resulting in lower average cake density and higher permeability. Other simulations suggest that soot deposits may also tend to form at the tips of projecting crystals due to the axial velocity component of exhaust moving down the filter inlet channel. Soot mass collected in this way would have a smaller impact on backpressure than soot forced into the flow restrictions deeper in the porous wall structure. This project has focused on the development of computational, analytical, and experimental techniques that are generally applicable to a wide variety of exhaust aftertreatment technologies. By helping to develop improved fundamental understanding pore-scale phenomena affecting filtration, soot oxidation, and NOX abatement, this cooperative research and development agreement (CRADA) has also assisted Dow Automotive in continuing development and commercialization of the ACM filter substrate. Over the course of this research project, ACM filters were successfully deployed on the Audi R10 TDI racecar which won the 24 Hours of LeMans endurance race in 2006, 2007, and 2008; and the 12 Hours of Sebring endurance race in 2006 and 2007. It would not have been possible for the R10 to compete in these traditionally gasoline-dominated events without reliable and effective exhaust particulate filtration. These successes demonstrated not only the performance of automotive diesel engines, but the efficacy of DPF technology as it was being deployed around the world to meet new emissions standards on consumer vehicles. During the course of this CRADA project, Dow Automotive commercialized their ACM DPF technology under the AERIFYTM DPF brand.

  13. Performance of the Low-Efficiency Diesel Particulate Filter for...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Documents & Publications On-Road PM Mass Emission Measured with OBS-TRPM Investigation of Direct Injection Vehicle Particulate Matter Emissions Simplification of Diesel Emission...

  14. A new closing method for wall flow diesel particulate filters

    SciTech Connect (OSTI)

    Stobbe, P.; Petersen, H.G.; Sorenson, S.C.; Hoej, J.W.

    1996-09-01

    A new method has been developed to close the ends of a wall flow filter used for removing particulate matter from diesel engine exhaust. In this method, the ends of the honeycomb structure are capped by deforming and closing the ends of the channel walls between the extrusion and firing stages of production. The method increases the amount of filtration area per filter volume for a given cell geometry compared to the traditional plugging method, since the entire length of the honeycomb channels is used for filtration purposes. In addition, use of the capping method has a beneficial effect on the pressure loss characteristics of a filter with a given filtration area. These benefits are illustrated through experimental results.

  15. Resistive heater geometry and regeneration method for a diesel particulate filter

    DOE Patents [OSTI]

    Phelps, Amanda (Malibu, CA); Kirby, Kevin W. (Calabasas Hills, CA); Gregoir, Daniel J. (Thousand Oaks, CA)

    2011-10-25

    One embodiment of the invention includes a diesel particulate filter comprising a first face and a second face; a bottom electrode layer formed over the first face of the diesel particulate filter; a middle resistive layer formed over a portion of the bottom electrode layer; and a top electrode layer formed over a portion of the middle resistive layer.

  16. Diesel particulate filter (DPF) regeneration by electrical heating of resistive coatings

    DOE Patents [OSTI]

    Williamson, Weldon S. (Malibu, CA); Gonze, Eugene V. (Pinckney, MI)

    2008-12-30

    An exhaust system that processes exhaust generated by an engine includes a diesel particulate filter (DPF) that is disposed downstream of the engine and that filters particulates from the exhaust. An electrical heater is integrally formed in an upstream end of the DPF and selectively heats the exhaust to initiate combustion of the particulates within the exhaust as it passes therethrough. Heat generated by combustion of the particulates induces combustion of particulates within the DPF.

  17. Characterization of lubricant-derived ash deposition within pores of Diesel Particulate Filters through non-destructive advanced imaging techniques

    E-Print Network [OSTI]

    Wozniak, Carolyn A

    2015-01-01

    Diesel Particulate Filters (DPF) have been studied for the past thirty years to trap and oxidize diesel engine exhaust gas particulate matter in order to meet increasingly stringent emission regulations. Due to engine ...

  18. Emissions and Durability of Underground Mining Diesel Particulate...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Testing an Active Diesel Particulate Filter on a 2-Cycle Marine Engine Ceramic Particulate Filters Development of an Accelerated Ash-Loading Protocol for Diesel Particulate Filters...

  19. Diesel particulate filter regeneration via resistive surface heating

    DOE Patents [OSTI]

    Gonze, Eugene V; Ament, Frank

    2013-10-08

    An exhaust system that processes exhaust generated by an engine is provided. The system includes: a particulate filter (PF) that filters particulates from the exhaust wherein an upstream end of the PF receives exhaust from the engine; and a grid of electrically resistive material that is applied to an exterior upstream surface of the PF and that selectively heats exhaust passing through the grid to initiate combustion of particulates within the PF.

  20. fundamental Modeling and Experimental Studies of Acicular Mullite Diesel Particulate Filters

    Broader source: Energy.gov [DOE]

    Pore-scale simulations of filtration and regeneration in acicular muillite diesel particulate filters have suggested underlying mechanisms that contribute to lower back pressures compared to other common DPF substrates.

  1. Passive regeneration : long-term effects on ash characteristics and diesel particulate filter performance

    E-Print Network [OSTI]

    Bahr, Michael J., Nav. E. (Michael James). Massachusetts Institute of Technology

    2013-01-01

    Diesel particulate filters (DPF) have seen widespread growth as an effective means for meeting increasingly rigorous particle emissions regulations. There is growing interest to exploit passive regeneration of DPFs to ...

  2. Zone heated inlet ignited diesel particulate filter regeneration

    DOE Patents [OSTI]

    Gonze, Eugene V [Pinckney, MI; Ament, Frank [Troy, MI

    2012-06-26

    An exhaust system that processes exhaust generated by an engine is provided. The system includes: a particulate filter (PF) that is disposed downstream of the engine and that filters particulates from the exhaust; and a grid that includes electrically resistive material that is segmented by non-conductive material into a plurality of zones and wherein the grid is applied to an exterior upstream surface of the PF.

  3. Synergistic effects of lubricant additive chemistry on ash properties impacting diesel particulate filter flow resistance and catalyst performance

    E-Print Network [OSTI]

    Munnis, Sean (Sean Andrew)

    2011-01-01

    Diesel particulate filters (DPF) have seen widespread use in recent years in both on- and offroad applications as an effective means for meeting the increasingly stringent particulate emission regulations. Overtime, ...

  4. Investigations of ash layer characteristics and ash distribution in a diesel particulate filter using novel lubricant additive tracers

    E-Print Network [OSTI]

    Morrow, Ryan (Ryan Michael)

    2010-01-01

    Diesel particulate filters (DPF) are currently widely used in various applications as a means of collecting particulate matter in order to meet increasingly stringent particle emissions regulations. Over time, the DPF ...

  5. Catalytic Filter for Diesel Exhaust Purification | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Catalytic Filter for Diesel Exhaust Purification Catalytic Filter for Diesel Exhaust Purification This project is developing a precious metal-free passive diesel particulate...

  6. Real-Time Particulate Mass Measurements Pre and Post Diesel Particulat...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Pre and Post Diesel Particulate Filters for LIght-Duty Diesel Vehicles Real-Time Particulate Mass Measurements Pre and Post Diesel Particulate Filters for LIght-Duty...

  7. A New CFD Model for understanding and Managing Diesel Particulate...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Studies of an Electrically-Assisted Diesel Particulate Filter Diesel Particulate Filter: A Success for Faurecia Exhaust Systems Vehicle Evaluation of Downsized Dow ACM DPF...

  8. Local Soot Loading Distribution in Cordierite Diesel Particulate...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Local Soot Loading Distribution in Cordierite Diesel Particulate Filters by Dynamic Neutron Radiography Local Soot Loading Distribution in Cordierite Diesel Particulate Filters by...

  9. Failure Stress and Apparent Elastic Modulus of Diesel Particulate...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Failure Stress and Apparent Elastic Modulus of Diesel Particulate Filter Ceramics Failure Stress and Apparent Elastic Modulus of Diesel Particulate Filter Ceramics Three...

  10. Development of SCR on Diesel Particulate Filter System for Heavy...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    More Documents & Publications Investigation on continuous soot oxidation and NOx reduction by SCR coated DPF SCR-DPF Integrations for Diesel ExhaustPerformance and...

  11. Ultra-Lite Diesel Particulate Filter Cartridge for Reduced Regeneratio...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Reduced Regeneration Time and Fuel Consumption Self-cleaning ceramic filter cartridges offer the advantage of better fuel economy, faster regeneration time, improved heat...

  12. Comparative Analysis on the Effects of Diesel Particulate Filter and

    E-Print Network [OSTI]

    Wu, Mingshen

    and NOx. Consequently, these two emissions are of the utmost concern in current diesel emission research Systems on a Wide Spectrum of Chemical Species Emissions Z . G E R A L D L I U , * , D E V I N R . B E R G , T H A D D E U S A . S W O R , A N D J A M E S J . S C H A U E R Cummins Emission Solutions

  13. Engine-External HC-Dosing for Regeneration of Diesel Particulate Filters for Heavy Duty and NRMM According to Annex XXVII StVZO

    Broader source: Energy.gov [DOE]

    This presentation discusses how a diesel particulate filter can be integrated in the exhaust piping of a heavy-duty engine.

  14. Catalyzed Diesel Particulate Filter Performance in a Light-Duty Vehicle

    SciTech Connect (OSTI)

    Sluder, C.S.

    2001-04-23

    Light-duty chassis dynamometer driving cycle tests were conducted on a Mercedes A170 diesel vehicle with various sulfur-level fuels and exhaust emission control systems. Triplicate runs of a modified light-duty federal test procedure (FTP), US06 cycle, and SCO3 cycle were conducted with each exhaust configuration and fuel. Ultra-low sulfur (3-ppm) diesel fuel was doped to 30- and 150-ppm sulfur so that all other fuel properties remained the same. The fuels used in these experiments met the specifications of the fuels from the DECSE (Diesel Emission Control Sulfur Effects) program. Although the Mercedes A170 vehicle is not available in the US, its emissions in the as tested condition fell within the U.S. Tier 1 full useful life standards with the OEM catalysts installed. Tests with the OEM catalysts removed showed that the OEM catalysts reduced PM emissions from the engine-out condition by 30-40% but had negligible effects on NOx emissions. Fuel sulfur level had very little effect on th e OEM catalyst performance. A prototype catalyzed diesel particulate filter (CDPF) mounted in an underfloor configuration reduced particulate matter emissions by more than 90% compared to the factory emissions control system. The results show that the CDPF did not promote any significant amounts of SO{sub 2}-to-sulfate conversion during these light-duty drive cycles.

  15. Electrically resistive coating for remediation (regeneration) of a diesel particulate filter and method

    DOE Patents [OSTI]

    Phelps, Amanda C. (Malibu, CA); Kirby, Kevin K. (Calabasas Hills, CA); Gregoire, Daniel J. (Thousand Oaks, CA)

    2012-02-14

    A resistively heated diesel particulate filter (DPF). The resistively heated DPF includes a DPF having an inlet surface and at least one resistive coating on the inlet surface. The at least one resistive coating is configured to substantially maintain its resistance in an operating range of the DPF. The at least one resistive coating has a first terminal and a second terminal for applying electrical power to resistively heat up the at least one resistive coating in order to increase the temperature of the DPF to a regeneration temperature. The at least one resistive coating includes metal and semiconductor constituents.

  16. Development of a full-flow burner regeneration type diesel particulate filter using SiC honeycomb

    SciTech Connect (OSTI)

    Okazoe, Hiroshi; Shimizu, Kenji; Watanabe, Yoshito; Santiago, E.; Kugland, P.; Ruth, W.

    1996-09-01

    A diesel particulate filter (DPF) for city buses was developed that combines a SiC filter and a full-now type burner for regeneration. Filter crack problems were averted by suppressing the peak temperature inside the filter to under 900 C. This was done by setting the maximum tolerable amount of collected particulate mass before regeneration at 50 g and controlling the burner so as to increase the regeneration gas temperature slowly up to a set value. This DPF was retrofitted to a Tokyo metropolitan bus to conduct a field test. The field test has been under way for half a year without any trouble or deterioration of system performance.

  17. Loading and Regeneration Analysis of a Diesel Particulate Filter with a Radio Frequency-Based Sensor

    SciTech Connect (OSTI)

    Sappok, Alex; Prikhodko, Vitaly Y; Parks, II, James E

    2010-01-01

    Accurate knowledge of diesel particulate filter (DPF) loading is critical for robust and efficient operation of the combined engine-exhaust aftertreatment system. Furthermore, upcoming on-board diagnostics regulations require on-board technologies to evaluate the status of the DPF. This work describes the application of radio frequency (RF) based sensing techniques to accurately measure DPF soot levels and the spatial distribution of the accumulated material. A 1.9L GM turbo diesel engine and a DPF with an RF-sensor were studied. Direct comparisons between the RF measurement and conventional pressure-based methods were made. Further analysis of the particulate matter loading rates was obtained with a mass-based soot emission measurement instrument (TEOM). Comparison with pressure drop measurements show the RF technique is unaffected by exhaust flow variations and exhibits a high degree of sensitivity to DPF soot loading and good dynamic response. Additional computational and experimental work further illustrates the spatial resolution of the RF measurements. Based on the experimental results, the RF technique shows significant promise for improving DPF control enabling optimization of the combined engine-aftertreatment system for improved fuel economy and extended DPF service life.

  18. Requirements-Driven Diesel Catalyzed Particulate Trap Design...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    More Documents & Publications Diesel Emission Control Technology Review Investigation of Aging Mechanisms in Lean NOx Traps Diesel Particulate Filters: Market Introducution...

  19. Microscopy investigations of ash and particulate matter accumulation in diesel particulate filter surface pores

    E-Print Network [OSTI]

    Beauboeuf, Daniel P

    2010-01-01

    There has been increased focus on the environmental impact of automobile emissions in recent years. These environmental concerns have resulted in the creation of more stringent particulate matter emissions regulations in ...

  20. In-mine evaluation of catalyzed diesel particulate filters at two underground metal mines. Report of investigations/1995

    SciTech Connect (OSTI)

    Watts, W.F.; Cantrell, B.K.; Bickel, K.L.; Olson, K.S.; Rubow, K.L.

    1995-11-01

    The U.S. Bureau of Mines evaluated the performance of a catalyzed diesel particulate filter (CDPF) and a CDPF combined with a diesel oxidation catalyst (DOC) at two metal mines. This paper describes the results from the two field evaluations. The CDPF/DOC was installed on an Elphinstone load-haul-dump (LHD) powered by a Caterpillar 3306 prechambered, turbocharged engine. The CDPF was installed on a Tamrock diesel-hydraulic roof-bolting jumbo, powered by a Deutz F6L912W engine. The underground evaluation at this mine was more difficult because of frequent movement by the roof-bolting jumbo, variation in the daily workload, tremendous fluctuation in ventilation air flow rate and the use of a high sulfur diesel fuel, which promotes the formation of sulfate particles, decreases filtration efficiency, and hastens the deterioration of the catalyst.

  1. Progression of soot cake layer properties during the systematic regeneration of diesel particulate filters measured with neutron tomography

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Toops, Todd J.; Pihl, Josh A.; Finney, Charles E. A.; Gregor, Jens; Bilheux, Hassina

    2015-01-16

    Although particulate filters (PFs) have been a key component of the emission control system for modern diesel engines, there remain significant questions about the basic regeneration behavior of the filters and how it changes with accumulation of increasing soot layers. This effort describes a systematic deposition and regeneration of particulate matter in 25-mm diameter × 76-mm long wall-flow PFs composed of silicon carbide (SiC) material. The initial soot distributions were analyzed for soot cake thickness using a nondestructive neutron imaging technique. With the PFs intact, it was then possible to sequentially regenerate the samples and reanalyze them, which was performedmore »after nominal 20, 50, and 70 % regenerations. The loaded samples show a relatively uniform distribution of particulate with an increasing soot cake thickness and nearly identical initial density of 70 mg/cm3. Throughout regeneration, the soot cake thickness initially decreases significantly while the density increases to 80–90 mg/cm3. After ~50 % regeneration, the soot cake thickness stays relatively constant, but instead, the density decreases as pores open up in the layer (~35 mg/cm3 at 70 % regeneration). Complete regeneration initially occurs at the rear of the PF channels. With this information, a conceptual model of the regeneration is proposed.« less

  2. Preserving Diesel Exhaust Ultrafine (Nano-) Particulate Structure...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Particulate Structure in Genotoxicity Studies to Support Engineering Development of Emission Controls Preserving Diesel Exhaust Ultrafine (Nano-) Particulate Structure in...

  3. Non-Destructive Neutron Imaging to Analyze Particulate Filters

    Broader source: Energy.gov [DOE]

    Non-destructive, non-invasive imaging is being employed in the laboratory to understand how soot, ash, and catalytic washcoat are deposited within a diesel particulate filter.

  4. Non-Destructive Neutron Imaging to Analyze Particulate Filters...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    non-invasive imaging is being employed in the laboratory to understand how soot, ash, and catalytic washcoat are deposited within a diesel particulate filter....

  5. Development of an Accelerated Ash-Loading Protocol for Diesel Particulate Filters

    Broader source: Energy.gov [DOE]

    Poster presentation at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

  6. Imaging of Diesel Particulate Filters using a High-Flux Neutron Source

    Broader source: Energy.gov [DOE]

    Detailed images of deposits identified inside automotive DPFs using neutrons show how the deposits of soot, ash, and washcoat occurs within the filter.

  7. Imaging of Diesel Particulate Filters using a High-Flux Neutron...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    deposits identified inside automotive DPFs using neutrons show how the deposits of soot, ash, and washcoat occurs within the filter. p-14toops.pdf More Documents & Publications...

  8. Ultra-Lite Diesel Particulate Filter Cartridge for Reduced Regeneration Time and Fuel Consumption

    Broader source: Energy.gov [DOE]

    Self-cleaning ceramic filter cartridges offer the advantage of better fuel economy, faster regeneration time, improved heat transfer, and reduction in manufacturing steps

  9. 2007 Diesel Particulate Measurement Research (E-66 Project) ...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Diesel Particulate Measurement Research (E-66 Project) 2007 Diesel Particulate Measurement Research (E-66 Project) 2004 Diesel Engine Emissions Reduction (DEER) Conference:...

  10. Update on 2007 Diesel Particulate Measurement Research | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    2007 Diesel Particulate Measurement Research Update on 2007 Diesel Particulate Measurement Research 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and...

  11. CLEERS Activities: Diesel Soot Filter Characterization & NOx...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Activities: Diesel Soot Filter Characterization & NOx Control Fundamentals CLEERS Activities: Diesel Soot Filter Characterization & NOx Control Fundamentals 2009 DOE Hydrogen...

  12. Advanced Particulate Filter Technologies for Direct Injection...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Particulate Filter Technologies for Direct Injection Gasoline Engine Applications Advanced Particulate Filter Technologies for Direct Injection Gasoline Engine Applications...

  13. Diesel Particulate Filtration (DPF) Technology: Success stories...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Filtration (DPF) Technology: Success stories at the High Temperature Materials Laboratory (HTML) User Program Diesel Particulate Filtration (DPF) Technology: Success stories at the...

  14. Regenerable particulate filter

    DOE Patents [OSTI]

    Stuecker, John N. (Albuquerque, NM); Cesarano, III, Joseph (Albuquerque, NM); Miller, James E. (Albuquerque, NM)

    2009-05-05

    A method of making a three-dimensional lattice structure, such as a filter used to remove particulates from a gas stream, where the physical lattice structure is designed utilizing software simulation from pre-defined mass transfer and flow characteristics and the designed lattice structure is fabricated using a free-form fabrication manufacturing technique, where the periodic lattice structure is comprised of individual geometric elements.

  15. Improvement and Simplification of Diesel Particulate Filter System using a Ceria-Based Fuel-Borne Catalyst in Serial Applications

    Broader source: Energy.gov [DOE]

    2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Rhodia Electronics and Catalysis

  16. Advanced Particulate Filter Technologies for Direct Injection Gasoline Engine Applications

    Broader source: Energy.gov [DOE]

    Specific designs and material properties have to be developed for gasoline particulate filters based on the different engine and exhaust gas characteristic of gasoline engines compared to diesel engines, e.g., generally lower levels of engine-out particulate emissions or higher GDI exhaust gas temperatures

  17. REVIEW OF DIESEL PARTICULATE MATTER SAMPLING METHODS Supplemental Report # 1

    E-Print Network [OSTI]

    Minnesota, University of

    REVIEW OF DIESEL PARTICULATE MATTER SAMPLING METHODS Supplemental Report # 1 DIESEL EXHAUST.D. and Megan Arnold University of Minnesota Department of Mechanical Engineering Center for Diesel Research....................................................................................... 3 Diesel aerosol size instrumentation............................................................ 4

  18. Electrically heated particulate filter restart strategy

    DOE Patents [OSTI]

    Gonze, Eugene V [Pinckney, MI; Ament, Frank [Troy, MI

    2011-07-12

    A control system that controls regeneration of a particulate filter is provided. The system generally includes a propagation module that estimates a propagation status of combustion of particulate matter in the particulate filter. A regeneration module controls current to the particulate filter to re-initiate regeneration based on the propagation status.

  19. REVIEW OF DIESEL PARTICULATE MATTER SAMPLING METHODS Supplemental Report # 2

    E-Print Network [OSTI]

    Minnesota, University of

    REVIEW OF DIESEL PARTICULATE MATTER SAMPLING METHODS Supplemental Report # 2 AEROSOL DYMAMICS Arnold University of Minnesota Department of Mechanical Engineering Center for Diesel Research................................................................................................. 3 Diesel aerosol composition and structure................................................... 3

  20. Development of an Accelerated Ash-Loading Protocol for Diesel...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    an Accelerated Ash-Loading Protocol for Diesel Particulate Filters Development of an Accelerated Ash-Loading Protocol for Diesel Particulate Filters Poster presentation at the 2007...

  1. MobiCleanTM Soot Filter for Diesel Locomotiive Applications ...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    MobiCleanTM Soot Filter for Diesel Locomotiive Applications MobiCleanTM Soot Filter for Diesel Locomotiive Applications 2005 Diesel Engine Emissions Reduction (DEER) Conference...

  2. Advanced Ceramic Filter For Diesel Emission Control | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Ceramic Filter For Diesel Emission Control Advanced Ceramic Filter For Diesel Emission Control 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Dow Automotive...

  3. Diesel lube oils; Fourth dimension of diesel particulate control

    SciTech Connect (OSTI)

    Springer, K.J. (Southwest Research Institute, San Antonio, TX (US))

    1989-07-01

    Particulate emission control, for the HD diesel engine, has previously been considered a three-dimensional problem involving: combustion of the fuel by the engine, fuel modification, and exhaust aftertreatment. The lube oil contribution may be considered a fourth dimension of the problem. Historically, the heavy-duty engine manufacturer has met emission standards for smoke (1968 to present), CO, HC, and NOx (1974 to present) and particulates (1988 to present) through changes in engine design. This paper used the allocation method to estimate the reduction in lube oil consumption needed to meet 1991 and 1994 U.S. particulate emission standards. This analysis places the contribution of lube oil as a source of exhaust particulates into prospective with the contributions from fuel sulfur and fuel combustion. An emissions control strategy to meet future regulations is offered in which reductions from fuel modification, combustion improvement, reduced lube oil consumption, and exhaust particulate trap-catalysts are all involved.

  4. Hydrocarbon-enhanced particulate filter regeneration via microwave ignition

    DOE Patents [OSTI]

    Gonze, Eugene V. (Pinckney, MI); Brown, David B. (Brighton, MI)

    2010-02-02

    A regeneration method for a particulate filter includes estimating a quantity of particulate matter trapped within the particulate filter, comparing the quantity of particulate matter to a predetermined quantity, heating at least a portion of the particulate filter to a combustion temperature of the particulate matter, and introducing hydrocarbon fuel to the particulate filter. The hydrocarbon fuel facilitates combustion of the particulate matter to regenerate the particulate filter.

  5. Diesel Particulate Oxidation Model: Combined Effects of Fixed...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Oxidation Model: Combined Effects of Fixed & Volatile Carbon Diesel Particulate Oxidation Model: Combined Effects of Fixed & Volatile Carbon Poster presented at the 16th Directions...

  6. Development of Advanced Diesel Particulate Filtration (DPF) Systems...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    (ANLCorningCaterpillar CRADA) Development of Advanced Diesel Particulate Filtration (DPF) Systems (ANLCorningCaterpillar CRADA) ace22lee.pdf More Documents & Publications...

  7. Radiant zone heated particulate filter

    DOE Patents [OSTI]

    Gonze, Eugene V [Pinckney, MI

    2011-12-27

    A system includes a particulate matter (PM) filter including an upstream end for receiving exhaust gas and a downstream end. A radiant zoned heater includes N zones, where N is an integer greater than one, wherein each of the N zones includes M sub-zones, where M is an integer greater than or equal to one. A control module selectively activates at least a selected one of the N zones to initiate regeneration in downstream portions of the PM filter from the one of the N zones, restricts exhaust gas flow in a portion of the PM filter that corresponds to the selected one of the N zones, and deactivates non-selected ones of the N zones.

  8. Development of A Microwave Assisted Particulate Filter Regeneration System

    SciTech Connect (OSTI)

    Popuri, Sriram

    2001-08-05

    The need for active regeneration of diesel particulate filters and the advantages of microwave assisted regeneration are discussed. The current study has multiple objectives, which include developing a microwave assisted particulate filter regeneration system for future generation light-duty diesel applications, including PNGV type applications. A variable power 2.0 kW microwave system and a tuned waveguide were employed. Cavity geometry is being optimized with the aid of computational modeling and temperature measurements during microwave heating. A wall-flow ceramic-fiber filter with superior thermal shock resistance, high filtration efficiency, and high soot capacity was used. The microwave assisted particulate filter regeneration system has operated for more than 100 hours in an engine test-cell with a 5.9-liter diesel engine with automated split exhaust flow and by-pass flow capabilities. Filter regeneration was demonstrated using soot loads up to 10 g/liter and engine exhaust at idling flow rates as the oxygen source. A parametric study to determine the optimal combination of soot loading, oxidant flow rate, microwave power and heating time is underway. Preliminary experimental results are reported.

  9. REVIEW OF DIESEL PARTICULATE MATTER SAMPLING FINAL REPORT

    E-Print Network [OSTI]

    Minnesota, University of

    REVIEW OF DIESEL PARTICULATE MATTER SAMPLING METHODS FINAL REPORT Prepared by David B. Kittelson of Mechanical Engineering Center for Diesel Research Minneapolis, MN January 14, 1999 #12;01/14/99 Page 2 TABLE ................................................................................................................5 DIESEL ENGINE TECHNOLOGY AND EMISSION REGULATIONS .............................7 PHYSICAL

  10. Electrically heated particulate filter embedded heater design

    DOE Patents [OSTI]

    Gonze, Eugene V.; Chapman, Mark R.

    2014-07-01

    An exhaust system that processes exhaust generated by an engine is provided. The system generally includes a particulate filter (PF) that filters particulates from the exhaust wherein an upstream end of the PF receives exhaust from the engine and wherein an upstream surface of the particulate filter includes machined grooves. A grid of electrically resistive material is inserted into the machined grooves of the exterior upstream surface of the PF and selectively heats exhaust passing through the grid to initiate combustion of particulates within the PF.

  11. Electrically heated particulate filter using catalyst striping

    DOE Patents [OSTI]

    Gonze, Eugene V; Paratore, Jr., Michael J; Ament, Frank

    2013-07-16

    An exhaust system that processes exhaust generated by an engine is provided. The system generally includes a particulate filter (PF) that filters particulates from the exhaust wherein an upstream end of the PF receives exhaust from the engine. A grid of electrically resistive material is applied to an exterior upstream surface of the PF and selectively heats exhaust passing through the grid to initiate combustion of particulates within the PF. A catalyst coating is applied to the PF that increases a temperature of the combustion of the particulates within the PF.

  12. Requirements from Particulate Filter Technology for Commercial...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Hot Gas Filtration of Fine and Ultra fine Particles with Liquid Phase Sintered SiC Ceramic DPF Evaluation of Passive and Active Soot Filters for Removal of Particulate...

  13. Biodiesel Effects on Diesel Particle Filter Performance: Milestone Report

    SciTech Connect (OSTI)

    Williams, A.; McCormick, R. L.; Hayes, R.; Ireland, J.

    2006-03-01

    Research results on the performance of biodiesel and biodiesel blends with ultra-low sulfur diesel (ULSD) and a diesel particle filter (DPF).

  14. Electrically heated particulate filter propagation support methods and systems

    DOE Patents [OSTI]

    Gonze, Eugene V [Pinckney, MI; Ament, Frank [Troy, MI

    2011-06-07

    A control system that controls regeneration of a particulate filter is provided. The system generally includes a regeneration module that controls current to the particulate filter to initiate combustion of particulate matter in the particulate filter. A propagation module estimates a propagation status of the combustion of the particulate matter based on a combustion temperature. A temperature adjustment module controls the combustion temperature by selectively increasing a temperature of exhaust that passes through the particulate filter.

  15. Light Duty Diesels in the United States - Some Perspectives ...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Particulate Filters: Market Introducution in Europe Diesel Particulate Filter: A Success for Faurecia Exhaust Systems Aftertreatment Modeling Status, Futur Potential, and...

  16. Electrically heated particulate filter enhanced ignition strategy

    DOE Patents [OSTI]

    Gonze, Eugene V; Paratore, Jr., Michael J

    2012-10-23

    An exhaust system that processes exhaust generated by an engine is provided. The system generally includes a particulate filter (PF) that filters particulates from the exhaust wherein an upstream end of the PF receives exhaust from the engine. A grid of electrically resistive material is applied to an exterior upstream surface of the PF and selectively heats exhaust passing through the grid to initiate combustion of particulates within the PF. A catalyst coating applied to at least one of the PF and the grid. A control module estimates a temperature of the grid and controls the engine to produce a desired exhaust product to increase the temperature of the grid.

  17. Face crack reduction strategy for particulate filters

    SciTech Connect (OSTI)

    Gonze, Eugene V

    2012-01-31

    A system comprises a particulate matter (PM) filter that comprises an upstream end for receiving exhaust gas, a downstream end and at least one portion. A control module initiates combustion of PM in the PM filter using a heater and selectively adjusts oxygen levels of the exhaust gas to adjust a temperature of combustion adjacent to the at least one portion of the PM filter. A method comprises providing a particulate matter (PM) filter that comprises an upstream end for receiving exhaust gas, a downstream end and at least one portion; initiating combustion of PM in the PM filter using a heater; selectively adjusting oxygen levels of the exhaust gas to adjust a temperature of combustion adjacent to the at least one portion of the PM filter.

  18. Diesel Soot Filter Characterization and Modeling for Advanced...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Soot Filter Characterization and Modeling for Advanced Substrates Diesel Soot Filter Characterization and Modeling for Advanced Substrates 2009 DOE Hydrogen Program and Vehicle...

  19. Vehicle Technologies Office Merit Review 2015: Development of Radio Frequency Diesel Particulate Filter Sensor and Controls for Advanced Low-Pressure Drop Systems to Reduce Engine Fuel Consumption

    Broader source: Energy.gov [DOE]

    Presentation given by Filter Sensing Technologies, Inc. at 2015 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about development...

  20. Vehicle Technologies Office Merit Review 2014: Development of Radio Frequency Diesel Particulate Filter Sensor and Controls for Advanced Low-Pressure Drop Systems to Reduce Engine Fuel Consumption

    Broader source: Energy.gov [DOE]

    Presentation given by Filter Sensing Technologies, Inc. at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about development...

  1. Control considerations for an on-line, active regeneration system for diesel particulate traps

    SciTech Connect (OSTI)

    Stiglic, P.; Hardy, J.; Gabelman, B. (Garrett Automotive Group, Allied-Singal, Torrance, CA (US))

    1989-07-01

    The authors are developing an exhaust aftertreatment system aimed at particulate emissions reduction from commercial diesel engines. The system uses a ceramic wall flow filter to trap the particulates, and regeneration is effected by raising gas temperature by throttling the exhaust downstream of the turbocharger. Lab testing at steady conditions demonstrated good performance with both catalyzed and uncatalyzed traps. Road testing shows the regeneration must be accomplished under severe transient conditions created by the normal vehicle operating modes. Primary efforts are to accommodate those transients using advanced control and digital computational techniques. Some of those techniques are described and are shown to yield improved control performance.

  2. Evaluation of Passive and Active Soot Filters for Removal of...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Passive and Active Soot Filters for Removal of Particulate Emissions from Diesel Engines Evaluation of Passive and Active Soot Filters for Removal of Particulate Emissions from...

  3. Electrically heated particulate filter preparation methods and systems

    DOE Patents [OSTI]

    Gonze, Eugene V [Pinckney, MI

    2012-01-31

    A control system that controls regeneration of a particulate filter is provided. The system generally includes a fuel control module that controls injection of fuel into exhaust that passes through the particulate filter. A regeneration module controls current to the particulate filter to initiate regeneration after the fuel has been injected into the exhaust.

  4. Accelerated Extraction of Diesel Particulate Matter SOF

    Office of Energy Efficiency and Renewable Energy (EERE)

    Poster presentation at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

  5. Combination of Diesel fuel system architectures and Ceria-based...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    of Diesel fuel system architectures and Ceria-based fuel-borne catalysts for improvement and simplification of the Diesel Particulate Filter System in serial applications...

  6. Non-thermal plasma based technologies for the after-treatment of automotive exhaust particulates and marine diesel exhaust NOx

    SciTech Connect (OSTI)

    McAdams, R; Beech, P; Gillespie, R; Guy, C; Jones,S; Liddell, T; Morgan, R; Shawcross, J; Weeks, D; Hughes, D; Oesterle, J; Eberspdcher,

    2003-08-24

    The trend in environmental legislation is such that primary engine modifications will not be sufficient to meet all future emissions requirements and exhaust aftertreatment technologies will need to be employed. One potential solution that is well placed to meet those requirements is non-thermal plasma technology. This paper will describe our work with some of our partners in the development of a plasma based diesel particulate filter (DPF) and plasma assisted catalytic reduction (PACR) for NOx removal. This paper describes the development of non-thermal plasma technology for the aftertreatment of particulates from a passenger car engine and NOx from a marine diesel exhaust application.

  7. Electrically heated particulate filter with reduced stress

    DOE Patents [OSTI]

    Gonze, Eugene V.

    2013-03-05

    A system comprises a particulate matter (PM) filter comprising an inlet for receiving exhaust gas. A zoned heater is arranged in the inlet and comprises a resistive heater comprising N zones, where N is an integer greater than one. Each of the N zones comprises M sub-zones, where M is an integer greater than one. A control module selectively activates one of the N zones to initiate regeneration in downstream portions of the PM filter from the one of the N zones and deactivates others of the N zones.

  8. Effects of Advanced Combustion Technologies on Particulate Matter Emissions Characteristics

    Broader source: Energy.gov [DOE]

    Findings of important implications for aftertreatment devices such as EGR coolers and diesel particulate filters, of physico-chemical changes observed in particulate matter during advanced combustion.

  9. Active DPF for Off-Road Particulate Matter (PM) Control

    Broader source: Energy.gov [DOE]

    This presentation details how a possibly catalyzed active diesel particulate filter can be used to control off-road particulate matter.

  10. Diesel Soot Filter Characterization and Modeling for Advanced...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    with DOW Automotive) Diesel Soot Filter Characterization and Modeling for Advanced Substrates (CRADA with DOW Automotive) Presentation from the U.S. DOE Office of Vehicle...

  11. Diesel Soot Filter Characterization and Modeling for Advanced...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    and DOW Automotive) Diesel Soot Filter Characterization and Modeling for Advanced Substrates (CRADA and DOW Automotive) Presentation from the U.S. DOE Office of Vehicle...

  12. Active Soot Filter Regeneration | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Emissions from Diesel Engines Development of an Active Regeneration Diesel Particulate Filter System Investigation on continuous soot oxidation and NOx reduction by SCR coated DPF...

  13. Experimental Diesel Particulate Filter Capabilities at PNNL

    Broader source: Energy.gov [DOE]

    Presentation given at DEER 2006, August 20-24, 2006, Detroit, Michigan. Sponsored by the U.S. DOE's EERE FreedomCar and Fuel Partnership and 21st Century Truck Programs.

  14. Overlap zoned electrically heated particulate filter

    DOE Patents [OSTI]

    Gonze, Eugene V [Pinckney, MI; Chapman, Mark R [Brighton, MI

    2011-07-19

    A system includes a particulate matter (PM) filter that includes an upstream end for receiving exhaust gas and a downstream end. A zoned heater is arranged spaced from the upstream end and comprises N zones, where N is an integer greater than one, wherein each of the N zones comprises M sub-zones, where M is an integer greater than or equal to one, and wherein the N zones and the M sub-zones are arranged in P layers, where P is an integer greater than one. A control module selectively activates at least a selected one of the N zones to initiate regeneration in downstream portions of the PM filter from the one of the N zones and deactivates non-selected ones of the N zones.

  15. Alternatives to conventional diesel fuel-some potential implications of California's TAC decision on diesel particulate.

    SciTech Connect (OSTI)

    Eberhardt, J. J.; Rote, D. M.; Saricks, C. L.; Stodolsky, F.

    1999-08-10

    Limitations on the use of petroleum-based diesel fuel in California could occur pursuant to the 1998 declaration by California's Air Resources Board (CARB) that the particulate matter component of diesel exhaust is a carcinogen, therefore a toxic air contaminant (TAC) subject to provisions of the state's Proposition 65. It is the declared intention of CARB not to ban or restrict diesel fuel, per se, at this time. Assuming no total ban, Argonne National Laboratory (ANL) explored two feasible ''mid-course'' strategies. (1) Increased penetration of natural gas and greater gasoline use in the transportation fuels market, to the extent that some compression-ignition (CI) applications revert to spark-ignition (SI) engines. (2) New specifications requiring diesel fuel reformulation based on exhaust products of individual diesel fuel constituents. Each of these alternatives results in some degree of (conventional) diesel displacement. In the first case, diesel fuel is assumed admissible for ignition assistance as a pilot fuel in natural gas (NG)-powered heavy-duty vehicles, and gasoline demand in California increases by 32.2 million liters per day overall, about 21 percent above projected 2010 baseline demand. Natural gas demand increases by 13.6 million diesel liter equivalents per day, about 7 percent above projected (total) consumption level. In the second case, compression-ignition engines utilize substitutes for petroleum-based diesel having similar ignition and performance properties. For each case we estimated localized air emission plus generalized greenhouse gas and energy changes. Economic implications of vehicle and engine replacement were not evaluated.

  16. Electrically heated particulate matter filter with recessed inlet end plugs

    DOE Patents [OSTI]

    Gonze, Eugene V. (Pinckney, MI); Ament, Frank (Troy, MI)

    2012-02-21

    A particulate matter (PM) filter includes filter walls having inlet ends and outlet ends. First adjacent pairs of the filter walls define inlet channels. Second adjacent pairs of the filter walls define outlet channels. Outlet end plugs are arranged in the inlet channels adjacent to the output ends. Inlet end plugs arranged in the outlet channels spaced from the inlet ends.

  17. Removal of residual particulate matter from filter media

    DOE Patents [OSTI]

    Almlie, Jay C; Miller, Stanley J

    2014-11-11

    A method for removing residual filter cakes that remain adhered to a filter after typical particulate removal methodologies have been employed, such as pulse-jet filter element cleaning, for all cleanable filters used for air pollution control, dust control, or powder control.

  18. Shielded regeneration heating element for a particulate filter

    DOE Patents [OSTI]

    Gonze, Eugene V [Pinckney, MI; Ament, Frank [Troy, MI

    2011-01-04

    An exhaust system includes a particulate filter (PF) that is disposed downstream from an engine. The PF filters particulates within an exhaust from the engine. A heating element heats particulate matter in the PF. A catalyst substrate or a flow converter is disposed upstream from said heating element. The catalyst substrate oxidizes the exhaust prior to reception by the heating element. The flow converter converts turbulent exhaust flow to laminar exhaust flow prior to reception by the heating element.

  19. Impacts of a Nanosized Ceria Additive on Diesel Engine Emissions of Particulate and Gaseous Pollutants

    E-Print Network [OSTI]

    Garfunkel, Eric

    Impacts of a Nanosized Ceria Additive on Diesel Engine Emissions of Particulate and Gaseous incorporating nanosized ceria have been increasingly used in diesel engines as combustion promoters. However- cylinder, four-cycle diesel engine using fuel mixes containing nanoceria of varying concentrations

  20. Pourquoi trouver un marqueur atmosphrique d'exposition aux particules diesel ?

    E-Print Network [OSTI]

    Boyer, Edmond

    Pourquoi trouver un marqueur atmosphérique d'exposition aux particules diesel ? Dominique LAFON rôle cancérigène possible des émissions diesel a suscité de nombreuses études depuis 20 ans. Nous avons sérieux ne nous permet d'incriminer plus les émissions des véhicules à moteur diesel que ceux à moteur

  1. Electrically heated particulate filter regeneration using hydrocarbon adsorbents

    DOE Patents [OSTI]

    Gonze, Eugene V [Pinckney, MI

    2011-02-01

    An exhaust system that processes exhaust generated by an engine is provided. The system generally includes a particulate filter (PF) that filters particulates from the exhaust wherein an upstream end of the PF receives exhaust from the engine. A grid of electrically resistive material selectively heats exhaust passing through the upstream end to initiate combustion of particulates within the PF. A hydrocarbon adsorbent coating applied to the PF releases hydrocarbons into the exhaust to increase a temperature of the combustion of the particulates within the PF.

  2. Tailored Acicular Mullite Substrates for Multifunctional Diesel...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Substrates for Multifunctional Diesel Particulate Filters SEM analysis showed that ACM DPF can be coated with relatively high catalyst washcoat without significantly...

  3. On-Board Engine Exhaust Particulate Matter Sensor for HCCI and Conventional Diesel Engines

    SciTech Connect (OSTI)

    Hall, Matt; Matthews, Ron

    2011-09-30

    The goal of the research was to refine and complete development of an on-board particulate matter (PM) sensor for diesel, DISI, and HCCI engines, bringing it to a point where it could be commercialized and marketed.

  4. Durability of Diesel Particulate Filters- Bench Studies on Cordierite Filters

    Broader source: Energy.gov [DOE]

    Presentation given at DEER 2006, August 20-24, 2006, Detroit, Michigan. Sponsored by the U.S. DOE's EERE FreedomCar and Fuel Partnership and 21st Century Truck Programs.

  5. Partitioning of Volatile Organics in Diesel Particulate and Exhaust

    Office of Energy Efficiency and Renewable Energy (EERE)

    Evaluation of how sampling details affect the measurement of volatile organic compounds in diesel exhaust

  6. Soot combustion during regeneration of filter ceramic traps for Diesel engines

    SciTech Connect (OSTI)

    Romero-Lopez, A.F.; Gutierrez-Salinas, R.; Garcia-Moreno, R.

    1996-09-01

    A retro-fit system for buses and heavy duty trucks is presented, along with the mathematical modeling of soot (particulate matter or PM) combustion. In spite of the fact that the use of ceramic traps has lost popularity in the US during the last few years, mainly due to the severe problems encountered during regeneration, a new approach to Diesel emissions control, is presented. The main objective is to attain the emissions levels set forth by the EPA for 1998, both on PM and NOx emissions. The very high levels of temperature required for thermal regeneration and elaborate controls, have almost eliminated the preference for ceramic filters. However, a new approach is presented by using catalyzed filters which considerably reduce the high temperature requirements. Along with the mathematical modeling a new hardware is presented, which is capable of performing filtering, regeneration, and operation with somewhat simpler and more economical controls. Improvements in the design of combustion chambers, higher injection pressures, better fuels and lubricants, etc., have made possible to re-think the concept of mechanical filtration of Diesel Particulate Matter (DPM). The development of the system has been partially sponsored by the Mexico City Government in an attempt to reduce the air pollution within the overloaded atmosphere of the large Mexico City Metropolitan Area (MCMA). Reported results are of the public domain.

  7. Ash reduction system using electrically heated particulate matter filter

    SciTech Connect (OSTI)

    Gonze, Eugene V; Paratore, Jr., Michael J; He, Yongsheng

    2011-08-16

    A control system for reducing ash comprises a temperature estimator module that estimates a temperature of an electrically heated particulate matter (PM) filter. A temperature and position estimator module estimates a position and temperature of an oxidation wave within the electrically heated PM filter. An ash reduction control module adjusts at least one of exhaust flow, fuel and oxygen levels in the electrically heated PM filter to adjust a position of the oxidation wave within the electrically heated PM filter based on the oxidation wave temperature and position.

  8. Diesel Desulfurization Filter | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Posters 2005deerrohrbach.pdf More Documents & Publications Desulfurization Fuel Filter NOx Adsorber Regeneration Phenomena In Heavy Duty Applications Investigation of the...

  9. Reliability and Design Strength Limit Calculations on Diesel...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Corning 2004deerwebb.pdf More Documents & Publications Predicting Thermal Stress in Diesel Particulate Filters Environmental Effects on Power Electronic Devices Effect...

  10. Fuel Sulfur Effects on a Medium-Duty Diesel Pick-Up with a NOx Adsorber, Diesel Particle Filter Emissions Control System: 2000-Hour Aging Results

    SciTech Connect (OSTI)

    Thornton, M.; Webb, C. C.; Weber, P. A.; Orban, J.; Slone, E.

    2006-05-01

    Discusses the emission results of a nitrogen oxide adsorber catalyst and a diesel particle filter in a medium-duty, diesel pick-up truck.

  11. Stabilization void-fill encapsulation high-efficiency particulate filters

    SciTech Connect (OSTI)

    Alexander, R.G.; Stewart, W.E.; Phillips, S.J.; Serkowski, M.M.; England, J.L.; Boynton, H.C.

    1994-05-01

    This report discusses high-efficiency particulate air (HEPA) filter systems that which are contaminated with radionuclides are part of the nuclear fuel processing systems conducted by the US Department of Energy (DOE) and require replacement and safe and efficient disposal for plant safety. Two K-3 HEPA filters were removed from service, placed burial boxes, buried, and safely and efficiently stabilized remotely which reduced radiation exposure to personnel and the environment.

  12. Microwave mode shifting antenna system for regenerating particulate filters

    DOE Patents [OSTI]

    Gonze, Eugene V [Pinckney, MI; Kirby, Kevin W [Calabasas Hills, CA; Phelps, Amanda [Malibu, CA; Gregoire, Daniel J [Thousand Oaks, CA

    2011-04-26

    A regeneration system comprises a particulate matter (PM) filter including a microwave energy absorbing surface, and an antenna system comprising N antennas and an antenna driver module that sequentially drives the antenna system in a plurality of transverse modes of the antenna system to heat selected portions of the microwave absorbing surface to regenerate the PM filter, where N is an integer greater than one. The transverse modes may include transverse electric (TE) and/or transverse magnetic (TM) modes.

  13. Inductively heated particulate matter filter regeneration control system

    DOE Patents [OSTI]

    Gonze, Eugene V; Paratore Jr., Michael J; Kirby, Kevin W; Phelps, Amanda; Gregoire, Daniel J

    2012-10-23

    A system includes a particulate matter (PM) filter with an upstream end for receiving exhaust gas, a downstream end and zones. The system also includes a heating element. A control module selectively activates the heating element to inductively heat one of the zones.

  14. Electrically heated particulate filter diagnostic systems and methods

    DOE Patents [OSTI]

    Gonze, Eugene V [Pinckney, MI

    2009-09-29

    A system that diagnoses regeneration of an electrically heated particulate filter is provided. The system generally includes a grid module that diagnoses a fault of the grid based on at least one of a current signal and a voltage signal. A diagnostic module at least one of sets a fault status and generates a warning signal based on the fault of the grid.

  15. Sizes, graphitic structures and fractal geometry of light-duty diesel engine particulates.

    SciTech Connect (OSTI)

    Lee, K. O.; Zhu, J.; Ciatti, S.; Choi, M. Y.; Energy Systems; Drexel Univ.

    2003-01-01

    The particulate matter of a light-duty diesel engine was characterized in its morphology, sizes, internal microstructures, and fractal geometry. A thermophoretic sampling system was employed to collect particulates directly from the exhaust manifold of a 1.7-liter turbocharged common-rail direct-injection diesel engine. The particulate samples collected at various engine-operating conditions were then analyzed by using a high-resolution transmission electron microscope (TEM) and an image processing/data acquisition system. Results showed that mean primary particle diameters (dp), and radii of gyration (Rg), ranged from 19.4 nm to 32.5 nm and 77.4 nm to 134.1 nm, respectively, through the entire engine-operating conditions of 675 rpm (idling) to 4000 rpm and 0% to 100% loads. It was also revealed that the other important parameters sensitive to the particulate formation, such as exhaust-gas recirculation (EGR) rate, equivalence ratio, and temperature, affected particle sizes significantly. Bigger primary particles were measured at higher EGR rates, higher equivalence ratios (fuel-rich), and lower exhaust temperatures. Fractal dimensions (D{sup f}) were measured at a range of 1.5 - 1.7, which are smaller than those measured for heavy-duty direct-injection diesel engine particulates in our previous study. This finding implies that the light-duty diesel engine used in this study produces more stretched chain-like shape particles, while the heavy-duty diesel engine emits more spherical particles. The microstructures of diesel particulates were observed at high TEM magnifications and further analyzed by a Raman spectroscope. Raman spectra revealed an atomic structure of the particulates produced at high engine loads, which is similar to that of typical graphite.

  16. Electrically heated particulate filter regeneration methods and systems for hybrid vehicles

    DOE Patents [OSTI]

    Gonze, Eugene V. (Pinckney, MI); Paratore, Jr., Michael J. (Howell, MI)

    2010-10-12

    A control system for controlling regeneration of a particulate filter for a hybrid vehicle is provided. The system generally includes a regeneration module that controls current to the particulate filter to initiate regeneration. An engine control module controls operation of an engine of the hybrid vehicle based on the control of the current to the particulate filter.

  17. Electrically heated particulate filter with zoned exhaust flow control

    DOE Patents [OSTI]

    Gonze, Eugene V [Pinckney, MI

    2012-06-26

    A system includes a particulate matter (PM) filter that includes X zones. An electrical heater includes Y heater segments that are associated with respective ones of the X zones. The electrical heater is arranged upstream from and proximate with the PM filter. A valve assembly includes Z sections that are associated with respective ones of the X zones. A control module adjusts flow through each of the Z sections during regeneration of the PM filter via control of the valve assembly. X, Y and Z are integers.

  18. Elevated exhaust temperature, zoned, electrically-heated particulate matter filter

    DOE Patents [OSTI]

    Gonze, Eugene V [Pinckney, MI; Bhatia, Garima [Bangalore, IN

    2012-04-17

    A system includes an electrical heater and a particulate matter (PM) filter that is arranged one of adjacent to and in contact with the electrical heater. A control module selectively increases an exhaust gas temperature of an engine to a first temperature and that initiates regeneration of the PM filter using the electrical heater while the exhaust gas temperature is above the first temperature. The first temperature is greater than a maximum exhaust gas temperature at the PM filter during non-regeneration operation and is less than an oxidation temperature of the PM.

  19. High exhaust temperature, zoned, electrically-heated particulate matter filter

    SciTech Connect (OSTI)

    Gonze, Eugene V.; Paratore, Jr., Michael J.; Bhatia, Garima

    2015-09-22

    A system includes a particulate matter (PM) filter, an electric heater, and a control circuit. The electric heater includes multiple zones, which each correspond to longitudinal zones along a length of the PM filter. A first zone includes multiple discontinuous sub-zones. The control circuit determines whether regeneration is needed based on an estimated level of loading of the PM filter and an exhaust flow rate. In response to a determination that regeneration is needed, the control circuit: controls an operating parameter of an engine to increase an exhaust temperature to a first temperature during a first period; after the first period, activates the first zone; deactivates the first zone in response to a minimum filter face temperature being reached; subsequent to deactivating the first zone, activates a second zone; and deactivates the second zone in response to the minimum filter face temperature being reached.

  20. SURFACE OXIDATION OF DIESEL PARTICULATE MATTER IN PRESENCE OF O3 +NOX: NEW TD/GC/MS ANALYSIS METHOD

    E-Print Network [OSTI]

    Holmén, Britt A.

    SURFACE OXIDATION OF DIESEL PARTICULATE MATTER IN PRESENCE OF O3 +NOX: NEW TD/GC/MS ANALYSIS METHOD+08 2.6e+08 2.8e+08 3e+08 Time--> Abundance TIC: 0914S4.D INTRODUCTION Diesel exhaust is one into the atmosphere diesel particles can be transformed through physical and chemical processes resulting

  1. On-Board Diesel & Hybrid Diesel-Electric Transit Bus PM

    E-Print Network [OSTI]

    Holmén, Britt A.

    On-Board Diesel & Hybrid Diesel-Electric Transit Bus PM Mass and Size-Resolved Number Emissions AND cost-effective ­ 2003 -- Purchase 2 hybrid diesel-electric buses ­ Emissions Testing ­ gases Particulate Mass -- filter #12;Motivation · Ultrafine (UF) particle health effects · Diesel vehicle exhaust

  2. Comparison of Particulate Collection in Probes and on Filters

    SciTech Connect (OSTI)

    Eaton, J.M.; Humphreys, M.P.

    2001-06-14

    Major radionuclide emissions from the Department of Energy's Y-12 National Security Complex are nuclides of uranium which are emitted as a particulate. The radionuclide NESHAP regulation requires stack sampling to be conducted in accordance with ANST Standard N13.1, 1969. Appendix B of this standard requires in every case where sampling delivery lines are used that an evaluation should be made of deposition in these lines. A number of Y-12 Complex stacks are fitted with continuous samplers which draw particulate laden air through a probe and across a sample filter. One approach to evaluate line loss as required by the ANSI standard is to establish a representative factor that is used for all subsequent sampling efforts. Another approach is to conduct a routine probe wash procedure on an ongoing basis to account for line losses. In 1991, Y-12 National Security Complex personnel began routine probe washes as part of their sample collection procedure. Since then, 50-80 stacks have been sampled on a near continuous basis and probe washes have been conducted quarterly. Particulate collection in probes versus particulate collection on filters is recorded as a probe factor and probe factor trends for a 10-year period are available.

  3. Zoned electrical heater arranged in spaced relationship from particulate filter

    DOE Patents [OSTI]

    Gonze, Eugene V [Pinckney, MI

    2011-11-15

    A system comprises a particulate matter (PM) filter that comprises an upstream end for receiving exhaust gas and a downstream end. A zoned heater is arranged spaced from the upstream end and comprises N zones, where N is an integer greater than one, wherein each of the N zones comprises M sub-zones, where M is an integer greater than one. A control module selectively activates at least a selected one of the N zones to initiate regeneration in downstream portions of the PM filter from the one of the N zones and deactivates non-selected ones of the N zones.

  4. Low exhaust temperature electrically heated particulate matter filter system

    DOE Patents [OSTI]

    Gonze, Eugene V. (Pinckney, MI); Paratore, Jr., Michael J. (Howell, MI); Bhatia, Garima (Bangalore, IN)

    2012-02-14

    A system includes a particulate matter (PM) filter, a sensor, a heating element, and a control module. The PM filter includes with an upstream end that receives exhaust gas, a downstream end and multiple zones. The sensor detects a temperature of the exhaust gas. The control module controls current to the heating element to convection heat one of the zones and initiate a regeneration process. The control module selectively increases current to the heating element relative to a reference regeneration current level when the temperature is less than a predetermined temperature.

  5. Wireless zoned particulate matter filter regeneration control system

    DOE Patents [OSTI]

    Gonze, Eugene V [Pinckney, MI; Kirby, Kevin W [Calabasas Hills, CA; Phelps, Amanda [Malibu, CA

    2011-10-04

    An assembly includes a particulate matter (PM) filter that comprises an upstream end for receiving exhaust gas, a downstream end and multiple zones. An absorbing layer absorbs microwave energy in one of N frequency ranges and is arranged with the upstream end. N is an integer. A frequency selective filter has M frequency selective segments and receives microwave energy in the N frequency ranges. M is an integer. One of the M frequency selective segments permits passage of the microwave energy in one of the N frequency ranges and does not permit passage of microwave energy in the other of the N frequency ranges.

  6. Size-Dependent Filtration of Non-Loaded Particulate Traps 

    E-Print Network [OSTI]

    White, Jessica

    2014-12-12

    This work investigates the filtration efficiency of uncoated, commercial Diesel Particulate Filter (DPF) substrates of three porosities (55.8%, 61.1%, 65.0%) for particulate sizes representative of Gasoline Direct Injection ...

  7. Impact of Biodiesel on the Oxidation Kinetics and Morphology of Diesel Particulate

    SciTech Connect (OSTI)

    Strzelec, Andrea [ORNL] [ORNL; Toops, Todd J [ORNL] [ORNL; Daw, C Stuart [ORNL] [ORNL

    2011-01-01

    We compare the oxidation characteristics of four different diesel particulates generated with a modern light-duty engine. The four particulates represent engine fueling with conventional ultra-low sulfur diesel (ULSD), biodiesel, and two intermediate blends of these fuels. The comparisons discussed here are based on complementary measurements implemented in a laboratory micro-reactor, including temperature programmed desorption and oxidation, pulsed isothermal oxidation, and BET surface area. From these measurements we have derived models that are consistent with the observed oxidation reactivity differences. When accessible surface area effects are properly accounted for, the oxidation kinetics of the fixed carbon components were found to consistently exhibit an Arrhenius activation energy of 113 6 kJ/mol. Release of volatile carbon from the as-collected particulate appears to follow a temperaturedependent rate law.

  8. Trapping efficiency depending on particulate size

    SciTech Connect (OSTI)

    Mayer, A.; Czerwinski, J.; Scheidegger, P.

    1996-09-01

    There is growing concern about the risk potential of Diesel particulates. This prompted two Swiss R and D projects focused on the capabilities of different soot trap concepts for filtering finest particulates. Eight different filter media, some in numerous variants, were tested on four different Diesel engines. All traps attained their gravimetric target. However, there are noticeable performance differences for finest particulates at or smaller than 50 nm. Fiber deep filters seem to be noticeably better than other filter types. If the carcinogens are mainly the finest particulates, then this criterion may become important in future trap evaluation.

  9. An optimization study on the control of NOx and particulate emissions from diesel engines

    SciTech Connect (OSTI)

    Larsen, C.; Oey, F.; Levendis, Y.A. [Northeastern Univ., Boston, MA (United States)

    1996-09-01

    This is an optimization study on the use of filtered exhaust gas recirculation (EGR) to reduce the NO emissions of diesel engines. Control of the particulate emissions and provisions for filtered EGR were achieved by an Aerodynamically Regenerated Trap (ART) with collection efficiencies in the order of 99%. The amount of EGR was regulated to provide for substantial NO reduction, without unacceptably decreasing the thermal efficiency of the engine or increasing the CO emissions. EGR regulation was accomplished by monitoring the injection pump setting which was correlated to the fuel flow rate, the speed of the engine, the amount of EGR flow, and the ambient air temperature. Through these parameters, the mixture strength expressed as the equivalence ratio {phi} was calculated and related to the power output of the engine. Thus, a map of engine performance parameters was generated and related to measured NO and CO emissions. A series of road tests showed that EGR most effectively reduces NO emissions at high {phi}`s (by a factor of two at 20% EGR) which, however, is accompanied by an increase in CO emissions by a factor of two, and a penalty in fuel economy by 8%. Benefits and losses can be optimized by automatically varying the level of EGR, using feedback from the aforementioned engine parameters. An algorithm was developed to govern the electrically controlled EGR valve and tests showed that the NO levels decreased by 30%, while the CO increased by 30%, showing no penalty in fuel economy. The resulting specific NO and CO emissions were well within the current US EPA standards.

  10. Measuring PM Distribution in a Catalyzed Particulate Filter using a Terahertz Wave Scanner

    Broader source: Energy.gov [DOE]

    Terahertz scanning system produced 3-dimensional image of local PM density in catatalyzed particulate filters tested under loading and oxidizing conditions

  11. Integrated exhaust and electrically heated particulate filter regeneration systems

    DOE Patents [OSTI]

    Gonze, Eugene V.; Paratore, Jr., Michael J.

    2013-01-08

    A system includes a particulate matter (PM) filter that includes multiple zones. An electrical heater includes heater segments that are associated with respective ones of the zones. The electrical heater is arranged upstream from and proximate with the PM filter. A post-fuel injection system injects fuel into at least one of a cylinder of an engine and an exhaust system. A control module is configured to operate in a first mode that includes activating the electrical heater to heat exhaust of the engine. The control module is also configured to operate in a second mode that includes activating the post-injection system to heat the exhaust. The control module selectively operates in at least one of the first mode and the second mode.

  12. Passive regeneration of catalyst coated knitted fiber diesel particulate traps

    SciTech Connect (OSTI)

    Mayer, A.; Emig, G.; Gmehling, B.; Popovska, N.; Hoelemann, K.; Buck, A.

    1996-09-01

    Knitted fiber particulate traps facilitate deep-bed structures. These have excellent filtration properties, particularly for ultra-fine particulates. They are also suitable as substrate for catalytic processes. The two characteristics are: high total surface area of the filaments, and good mass transfer. These are prerequisites for intense catalytic activity. The deposited soot is uniformly distributed. Therefore, temperature peaks are avoided during regeneration. The tested coatings lower the regeneration temperature by about 200 C to burn-off temperatures below 350 C. Further improvements seem attainable. Thus, a purely passive regeneration appears feasible for most applications. The system is autonomous and cost effective. However, in extreme low load situations, e.g. city bus services, the necessary exhaust temperatures are not attained. Hence, burners or electrical heating is necessary for trap regeneration. Nevertheless, catalytic coating is attractive for substantially reducing the regeneration energy requirements.

  13. Prevention of Air Pollution from Ships: Diesel Engine Particulate Emission Reduction via Lube-Oil-Consumption Control

    E-Print Network [OSTI]

    Brown, Alan

    are strongly related to NOx emissions, and in order to reach extremely low emission levels, reduction1 Prevention of Air Pollution from Ships: Diesel Engine Particulate Emission Reduction via Lube of the consumed lube-oil. Significant reductions in particulate emission rate could be obtained by controlling

  14. Investigation of NO2 Oxidation Kinetics and Burning Mode for Medium Duty Diesel Particulate: Contrasting O2 and NO2 Oxidation

    Broader source: Energy.gov [DOE]

    Reports on preliminary measurements of particulate reactivity and changes in microstructure upon exposure to NO2, which is often present at significant levels in diesel engine exhaust.

  15. Tailored Acicular Mullite Substrates for Multifunctional Diesel Particulate Filters

    Broader source: Energy.gov [DOE]

    SEM analysis showed that ACM DPF can be coated with relatively high catalyst washcoat without significantly affecting the porosity or pore size Therefore, it maintains a low back pressure performance at very high catalyst

  16. Emissions and Durability of Underground Mining Diesel Particulate Filter Applications

    Broader source: Energy.gov [DOE]

    Presentation given at DEER 2006, August 20-24, 2006, Detroit, Michigan. Sponsored by the U.S. DOE's EERE FreedomCar and Fuel Partnership and 21st Century Truck Programs.

  17. Diesel Particulate Filter Technology for Low-Temperature and...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    & Publications Performance of Johnson Matthey EGRT Emission Control System for NOx and PM Emission Reduction in Retrofit Applications Part 1 Aftertreatment Modeling...

  18. Blowers for Air Assisted Diesel Particulate Filter Regeneration

    Broader source: Energy.gov [DOE]

    Prototypes of a new series of high-pressure, brushless DC motor-drive blowers have completed field testing, and DFM and manufacturing cost studies are well advanced.

  19. Durability of Diesel Engine Particulate Filters (Agreement ID:10461)

    Broader source: Energy.gov [DOE]

    2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

  20. Substrate Studies of an Electrically-Assisted Diesel Particulate Filter

    Broader source: Energy.gov [DOE]

    Transient distributed DPF wall and gas temperature were simultaneously measured using the optical and thermocouple systems, on both electrically assisted and conventional fuel-only DPF regeneration cycles

  1. Versatile Diesel Particulate Filter Cartridge Any Size, Any Shape

    Broader source: Energy.gov [DOE]

    Presentation given at DEER 2006, August 20-24, 2006, Detroit, Michigan. Sponsored by the U.S. DOE's EERE FreedomCar and Fuel Partnership and 21st Century Truck Programs.

  2. Durability of Diesel Particulate Filters - Bench Studies on Cordierite...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Detroit, Michigan. Sponsored by the U.S. DOE's EERE FreedomCar and Fuel Partnership and 21st Century Truck Programs. 2006deerdacosta.pdf More Documents & Publications...

  3. Versatile Diesel Particulate Filter Cartridge Any Size, Any Shape...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Detroit, Michigan. Sponsored by the U.S. DOE's EERE FreedomCar and Fuel Partnership and 21st Century Truck Programs. 2006deernixdorf.pdf More Documents & Publications Pleated...

  4. Durability of Diesel Engine Particulate Filters | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based| Department8,Department of2 FederalEnergyDucts Sealing Usingofof12 DOE

  5. Durability of Diesel Engine Particulate Filters | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based| Department8,Department of2 FederalEnergyDucts Sealing Usingofof12

  6. Durability of Diesel Engine Particulate Filters | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based| Department8,Department of2 FederalEnergyDucts Sealing Usingofof120

  7. Durability of Diesel Engine Particulate Filters | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based| Department8,Department of2 FederalEnergyDucts Sealing Usingofof12009

  8. Electrically-Assisted Diesel Particulate Filter Regeneration | Department

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based|DepartmentStatementofAprilof Energy 2 DOE Hydrogen and Fuel Cells

  9. Electrically-Assisted Diesel Particulate Filter Regeneration | Department

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based|DepartmentStatementofAprilof Energy 2 DOE Hydrogen and Fuel Cellsof

  10. Radio Frequency Diesel Particulate Filter Sensor Reduces Fuel Consumption,

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on DeliciousMathematicsEnergyInterested PartiesBuildingBudget ||Department ofRequest forTools |Racing

  11. Sterling Technology ultra-pure filtered diesel fuel. Final report, April 1984-April 1988

    SciTech Connect (OSTI)

    Adams, E.C.

    1988-05-01

    This report details testing done on ultra-pure filtered diesel fuel and unfiltered diesel fuel. Several barrels of filtered fuel, shipped from the manufacturer--Sterling Technology, Inc., Jacksonville, Florida--were tested using the 690-in. Deutz F-8L-413A Air Cooled V8 Engine. No significant difference was found, but due to a delay in starting the tests, it was suspected that some deterioration might have occurred in the fuel. The objective was to investigate the possible benefits of the ultra-pure filtered diesel fuel in power improvement and reduction of exhaust smoke.

  12. Emission Control Technology, Performance/Durability -POSTER Effect of Accelerated Ash Loading on Performance of Diesel

    E-Print Network [OSTI]

    Pennycook, Steve

    on Performance of Diesel Particulate Filters and Morphology of Ash Layers Bruce G. Bunting and Todd J. Toops using a single-cylinder diesel engine has been developed for accelerated ash loading in catalyzed and non- catalyzed diesel particular filters (DPF) made of cordierite, SiC and mullite substrate

  13. Simulating the Impact of Premixed Charge Compression Ignition on Light-Duty Diesel Fuel Economy and Emissions of Particulates and NOx

    SciTech Connect (OSTI)

    Gao, Zhiming [ORNL; Daw, C Stuart [ORNL; Wagner, Robert M [ORNL; Edwards, Kevin Dean [ORNL; Smith, David E [ORNL

    2013-01-01

    We utilize the Powertrain Systems Analysis Toolkit (PSAT) combined with transient engine and aftertreatment component models implemented in Matlab/Simulink to simulate the effect of premixed charge compression ignition (PCCI) on the fuel economy and emissions of light-duty diesel-powered conventional and hybrid electric vehicles (HEVs). Our simulated engine is capable of both conventional diesel combustion (CDC) and premixed charge compression ignition (PCCI) over real transient driving cycles. Our simulated aftertreatment train consists of a diesel oxidation catalyst (DOC), lean NOx trap (LNT), and catalyzed diesel particulate filter (DPF). The results demonstrate that, in the simulated conventional vehicle, PCCI can significantly reduce fuel consumption and emissions by reducing the need for LNT and DPF regeneration. However, the opportunity for PCCI operation in the simulated HEV is limited because the engine typically experiences higher loads and multiple stop-start transients that are outside the allowable PCCI operating range. Thus developing ways of extending the PCCI operating range combined with improved control strategies for engine and emissions control management will be especially important for realizing the potential benefits of PCCI in HEVs.

  14. Biodiesel Emissions Testing with a Modern Diesel Engine - Equipment Only: Cooperative Research and Development Final Report, CRADA Number CRD-10-399

    SciTech Connect (OSTI)

    Williams, A.

    2013-06-01

    To evaluate the emissions and performance impact of biodiesel in a modern diesel engine equipped with a diesel particulate filter. This testing is in support of the Non-Petroleum Based Fuels (NPBF) 2010 Annual Operating Plan (AOP).

  15. OPERATING EXPERIENCE LEVEL 3, Requalification Test Failure of Certain High Efficiency Particulate Air (HEPA) Filters- Update

    Broader source: Energy.gov [DOE]

    Operating Experience Level 3 (OE-3) document provides information regarding the previous requalification test failure and subsequent successful requalification, of certain high efficiency particulate air (HEPA) filter models manufactured by Flanders Corporation.

  16. Heavy Duty Diesel Particulate Matter and Fuel Consumption Modeling for Transportation Analysis

    E-Print Network [OSTI]

    Scora, George Alexander

    2011-01-01

    Model for Heavy Duty Diesel Vehicles. TransportationAir Contaminant Emissions from Diesel- fueled Engines. Factfor Measuring Emissions from Diesel Engines. 1. Regulated

  17. Diesel exhaust particulate increases the size and complexity of lesions in atherosclerotic mice

    E-Print Network [OSTI]

    2013-01-01

    McDonald JD: Inhaled diesel emissions alter atheroscleroticinduced by inhalation of diesel exhaust. AtherosclerosisA, Sandstrom T, Newby DE: Diesel exhaust inhalation causes

  18. Analysis of C1, C2, and C10 through C33 particle-phase and semi-volatile organic compound emissions from heavy-duty diesel engines

    E-Print Network [OSTI]

    Wu, Mingshen

    from heavy-duty diesel engines Z. Gerald Liu a,*, Devin R. Berg a , Victoria N. Vasys a , Melissa E 18 November 2009 Keywords: Organic compound emissions Particulate matter emissions Heavy-duty diesel engines Aftertreatment technology Diesel particulate filter Chemical speciation a b s t r a c t To meet

  19. Developing an accelerated aging system for gasoline particulate filters and an evaluation test for effects on engine performance

    E-Print Network [OSTI]

    Jorgensen, James E. (James Eastman)

    2014-01-01

    Stringent regulations worldwide will limit the level of particulate matter (PM) emitted from gasoline engines equipped with direct fuel injection. Gasoline particulate filters (GPFs) present one strategy for meeting PM ...

  20. Alternatives to diesel fuel in California - fuel cycle energy and emission effects of possible replacements due to the TAC diesel particulate decision.

    SciTech Connect (OSTI)

    Saricks, C. L.; Rote, D. M.; Stodolsky, F.; Eberhardt, J. J.

    1999-12-03

    Limitations on petroleum-based diesel fuel in California could occur pursuant to the 1998 declaration by California's Air Resources Board (CARB) that the particulate matter component of diesel exhaust is a carcinogen, therefore a toxic air contaminant (TAC) subject to the state's Proposition 65. It is the declared intention of CARB not to ban or restrict diesel fuel per se, at this time. Assuming no total ban, Argonne National Laboratory (ANL) explored two feasible mid-course strategies, each of which results in some degree of (conventional) diesel displacement. In the first case, with substantial displacement of compression-ignition by spark-ignition engines, diesel fuel is assumed admissible for ignition assistance as a pilot fuel in natural gas (NG)-powered heavy-duty vehicles. Gasoline demand in California increases by 32.2 million liters (8.5 million gallons) per day overall, about 21% above projected 2010 baseline demand. Natural gas demand increases by 13.6 million diesel liter (3.6 million gallon) equivalents per day, about 7% above projected (total) consumption level. In the second case, compression-ignition engines utilize substitutes for petroleum-based diesel having similar ignition and performance properties. For each case the authors estimated localized air emission plus generalized greenhouse gas and energy changes. Fuel replacement by di-methyl ether yields the greatest overall reduction in NOX emissions, though all scenarios bring about PM{sub 10} reductions relative to the 2010 baseline, with greatest reductions from the first case described above and the least from fuel replacement by Fischer-Tropsch synthetic diesel. Economic implications of vehicle and engine replacement were not formally evaluated.

  1. Alternatives to Diesel Fuel in California - Fuel Cycle Energy and Emission Effects of Possible Replacements Due to the TAC Diesel Particulate Decision

    SciTech Connect (OSTI)

    Christopher L. Saraicks; Donald M. Rote; Frank Stodolsky; James J. Eberhardt

    2000-05-01

    Limitations on petroleum-based diesel fuel in California could occur pursuant to the 1998 declaration by California's Air Resources Board (CARB) that the particulate matter component of diesel exhaust is a carcinogen, therefore a toxic air contaminant (TAC) subject to the state's Proposition 65. It is the declared intention of CARB not to ban or restrict diesel fuel, per se, at this time. Assuming no total ban, Argonne National Laboratory (ANL) explored two feasible ''mid-course'' strategies, each of which results in some degree of (conventional) diesel displacement. In the first case, with substantial displacement of compression ignition by spark ignition engines, diesel fuel is assumed admissible for ignition assistance as a pilot fuel in natural gas (NG)-powered heavy-duty vehicles. Gasoline demand in California increases by 32.2 million liters (8.5 million gallons) per day overall, about 21 percent above projected 2010 baseline demand. Natural gas demand increases by 13.6 million diesel liter (3.6 million gallon) equivalents per day, about 7 percent above projected (total) consumption level. In the second case, ressionignition engines utilize substitutes for petroleum-based diesel having similar ignition and performance properties. For each case we estimated localized air emission plus generalized greenhouse gas and energy changes. Fuel replacement by di-methyl ether yields the greatest overall reduction in NOx emissions, though all scenarios bring about PM10 reductions relative to the 2010 baseline, with greatest reductions from the first case described above and the least from fuel replacement by Fischer-Tropsch synthetic diesel. Economic implications of vehicle and engine replacement were not formally evaluated.

  2. Apparatus and method for removing particulate deposits from high temperature filters

    DOE Patents [OSTI]

    Nakaishi, Curtis V. (Morgantown, WV); Holcombe, Norman T. (McMurray, PA); Micheli, Paul L. (Morgantown, WV)

    1992-01-01

    A combustion of a fuel-air mixture is used to provide a high-temperature and high-pressure pulse of gaseous combustion products for the back-flush cleaning of ceramic filter elements contained in a barrier filter system and utilized to separate particulates from particulate-laden process gases at high temperature and high pressure. The volume of gaseous combustion products provided by the combustion of the fuel-air mixture is preferably divided into a plurality of streams each passing through a sonic orifice and conveyed to the open end of each filter element as a high pressure pulse which passes through the filter elements and dislodges dust cake supported on a surface of the filter element.

  3. An evaluation of a pre-charging pulse-jet filter for small combustor particulate control

    SciTech Connect (OSTI)

    Helfritch, D.J.; Quimby, J.M.

    1991-04-01

    The objective of this test program was the performance and economic evaluation of a pre-charged pulse-jet filter as the principal particulate control device for a commercial- or industrial-scale coal-fired combustor. Performance factors that were considered were the effects of particle charge, air/cloth ratio, pulse frequency, pulse pressure, fabric types, humidity, and inlet particulate loading on fine particle collection efficiency and pressure drop. Economic factors that were considered included capital costs, energy requirements, and operating and maintenance costs. The program resulted in a recommendation regarding the relative suitability of the pre-charged pulse-jet filter for small combustor particulate control, as compared to a pulse-jet filter without pre-charging. Fine particle control capability, ease of operation, and overall economics were taken into consideration in making comparisons. 23 refs., 16 figs., 10 tabs.

  4. Performance of the Low-Efficiency Diesel Particulate Filter for Diesel PM Reduction

    Broader source: Energy.gov [DOE]

    Poster presented at the 16th Directions in Engine-Efficiency and Emissions Research (DEER) Conference in Detroit, MI, September 27-30, 2010.

  5. Value Analysis of Alternative Diesel Particulate Filter (DPF) Substrates for Future Diesel Aftertreatment Systems

    Broader source: Energy.gov [DOE]

    DPF products like Acicular Mullite meet multiple needs Provide higher soot mass limits and durability than other materials at the same porosity.

  6. High-Energy Laser Diagnostics (HELD) for the Measurement of Diesel Particulate Matter

    Broader source: Energy.gov [DOE]

    2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Sandia National Laboratories, Combustion Research Facility

  7. An evaluation of a pre-charging pulse-jet filter for small combustor particulate control

    SciTech Connect (OSTI)

    Quimby, J.M.

    1990-11-01

    The objective of this test program is the performance and economic evaluation of a pre-charged-pulse jet filter as the principal particulate control device for a commercial or industrial scale coal fired combustor. Performance factors that will be considered are the effects of particle charge, air/cloth ratio, fabric types, percent humidity and inlet particulate loading on fine particle collection efficiency, and pressure drop. Economic factors that will be considered are capital costs, energy and other operating costs, and maintenance costs. The program will result in a recommendation regarding the relative suitability of the pre charged pulse-jet filter for small combustor particulate control, as compared to other control devices. Fine particle control capability, ease of operation, and overall economics will be taken into consideration in making comparisons.

  8. Simultaneous Removal of Particulates and NOx Using Catalyst Impregnated Fibrous Ceramic Filters

    SciTech Connect (OSTI)

    Choi, J.I.; Mun, S.H.; Kim, S.T.; Hong, M.S.; Lee, J.C.

    2002-09-19

    The research is focused on the development and commercialization of high efficiency, cost effective air pollution control system, which can replace in part air pollution control devices currently in use. In many industrial processes, hot exhaust gases are cooled down to recover heat and to remove air pollutants in exhaust gases. Conventional air pollution control devices such as bag filters, E.P. and adsorption towers withstand operating temperatures up to 300 C. Also, reheating is sometimes necessary to meet temperature windows for S.C.R. Since Oxidation reactions of acid gases such as SO{sub 2}, and HCl with lime are enhanced at high temperatures, catalyst impregnated ceramic filters can be candidate for efficient and cost effective air pollution control devices. As shown on Fig. 1., catalytic ceramic filters remove particulates on exterior surface of filters and acid gases are oxidized to salts reacting with limes injected in upstream ducts. Oxidation reactions are enhanced in the cake formed on exterior of filters. Finally, injected reducing gas such as NH{sub 3} react with NOx to form N{sub 2} and H{sub 2}O interior of filters in particulate-free environment. Operation and maintenance technology is similar to conventional bag filters except that systems are exposed to relatively high temperatures ranging 300-500 C.

  9. Results of Self-Absorption Study on the Versapor 3000 Filters for Radioactive Particulate Air Sampling

    SciTech Connect (OSTI)

    Barnett, J. M.; Cullinan, Valerie I.; Barnett, Debra S.; Trang-Le, Truc LT; Bliss, Mary; Greenwood, Lawrence R.; Ballinger, Marcel Y.

    2009-02-17

    Since the mid-1980s, Pacific Northwest National Laboratory (PNNL) has used a value of 0.85 as the correction factor for self absorption of activity for particulate radioactive air samples collected from building exhaust for environmental monitoring. This value accounts for activity that cannot be detected by direct counting of alpha and beta particles. Emissions can be degraded or blocked by filter fibers for particles buried in the filter material or by inactive dust particles collected with the radioactive particles. These filters are used for monitoring air emissions from PNNL stacks for radioactive particles. This paper describes an effort to re-evaluate self-absorption effects in particulate radioactive air sample filters (Versapor® 3000, 47 mm diameter) used at PNNL. There were two methods used to characterize the samples. Sixty samples were selected from the archive for acid digestion to compare the radioactivity measured by direct gas-flow proportional counting of filters to the results obtained after acid digestion of the filter and counting again by gas-flow proportional detection. Thirty different sample filters were selected for visible light microscopy to evaluate filter loading and particulate characteristics. Mass-loading effects were also considered. Filter ratios were calculated by dividing the initial counts by the post-digestion counts with the expectation that post-digestion counts would be higher because digestion would expose radioactivity embedded in the filter in addition to that on top of the filter. Contrary to expectations, the post digestion readings were almost always lower than initial readings and averaged approximately half the initial readings for both alpha and beta activity. Before and after digestion readings appeared to be related to each other, but with a low coefficient of determination (R^2) value. The ratios had a wide range of values indicating that this method did not provide sufficient precision to quantify self-absorption effects. The microscopy analysis compares different filter loadings and shows that smaller particle sizes (under 10 micron) can readily be seen on the more lightly loaded filters. At higher loadings, however, the particle size is harder to differentiate. This study provides data on actual stack emission samples showing a range of mass loading conditions and visual evidence of particle size and distribution and also presents the difficulties in quantifying self-absorption effects using actual samples.

  10. An evaluation of a pre-charging pulse-jet filter for small combustor particulate control

    SciTech Connect (OSTI)

    Quimby, J.M.

    1991-03-01

    The objective of this test program is the performance and economic evaluation of a pre charged-pulse jet filter as the principal particulate control device for a commercial or industrial scale coal fired combustor. Performance factors that will be considered are the effects of particle charge, air/cloth ratio, fabric types, percent humidity and inlet particulate loading on fine particle collection efficiency, and pressure drop. Economic factors that will be considered are capital costs, energy and other operating costs, and maintenance costs.

  11. Operating Experience Level 3, Update to Requalification Test Failure of Certain High Efficiency Particulate Air (HEPA) Filters

    Broader source: Energy.gov [DOE]

    Operating Experience Level 3 (OE-3) document provides information regarding the previous requalification test failure and subsequent successful requalification, of certain high efficiency particulate air (HEPA) Filters models manufactured by Flanders Corporation.

  12. The nature of lubricant-derived ash-related emissions and their impact on diesel aftertreatment system performance

    E-Print Network [OSTI]

    Sappok, Alexander G. (Alexander Georg)

    2009-01-01

    Diesel particulate filters (DPF) have seen widespread use in on- and off-road applications as an effective means for meeting increasingly stringent particle emissions regulations. Over time, incombustible material or ash, ...

  13. Optimization of Engine-out Emissions from a Diesel Engine to Meet Tier 2 Bin 5 Emission Limits

    Broader source: Energy.gov [DOE]

    Drastic reduction of engine-out emissions and complicated aftertreatment system comprising of oxidation catalyst, particulate filter, and DeNOx catalyst are implemented to meet Tier 2 Bin 5 limits for U.S. market diesel engines.

  14. Reformulated diesel fuel

    DOE Patents [OSTI]

    McAdams, Hiramie T [Carrollton, IL; Crawford, Robert W [Tucson, AZ; Hadder, Gerald R [Oak Ridge, TN; McNutt, Barry D [Arlington, VA

    2006-03-28

    Reformulated diesel fuels for automotive diesel engines which meet the requirements of ASTM 975-02 and provide significantly reduced emissions of nitrogen oxides (NO.sub.x) and particulate matter (PM) relative to commercially available diesel fuels.

  15. Kinetic Model Development for the Combustion of Particulate Matter from Conventional and Soy Methyl Ester Diesel Fuels

    SciTech Connect (OSTI)

    Strzelec, Andrea

    2009-12-01

    The primary objective of this research has been to investigate how the oxidation characteristics of diesel particulate matter (PM) are affected by blending soy-based biodiesel fuel with conventional ultra low sulfur diesel (ULSD) fuel. PM produced in a light duty engine from different biodiesel-conventional fuel blends was subjected to a range of physical and chemical measurements in order to better understand the mechanisms by which fuel-related changes to oxidation reactivity are brought about. These observations were then incorporated into a kinetic model to predict PM oxidation. Nanostructure of the fixed carbon was investigated by HR-TEM and showed that particulates from biodiesel had a more open structure than particulates generated from conventional diesel fuel, which was confirmed by BET surface area measurements. Surface area evolution with extent of oxidation reaction was measured for PM from ULSD and biodiesel. Biodiesel particulate has a significantly larger surface area for the first 40% of conversion, at which point the samples become quite similar. Oxidation characteristics of nascent PM and the fixed carbon portion were measured by temperature programmed oxidation (TPO) and it was noted that increased biodiesel blending lowered the light-off temperature as well as the temperature where the peak rate of oxidation occurred. A shift in the oxidation profiles of all fuels was seen when the mobile carbon fraction was removed, leaving only the fixed carbon, however the trend in temperature advantage of the biofuel blending remained. The mobile carbon fraction was measured by temperature programmed desorption found to generally increase with increasing biodiesel blend level. The relative change in the light-off temperatures for the nascent and fixed carbon samples was found to be related to the fraction of mobile carbon. Effective Arrhenius parameters for fixed carbon oxidation were directly measured with isothermal, differential oxidation experiments. Normalizing the reaction rate to the total carbon surface area available for reaction allowed for the definition of a single reaction rate with constant activation energy (112.5 {+-} 5.8 kJ/mol) for the oxidation of PM, independent of its fuel source. A kinetic model incorporating the surface area dependence of fixed carbon oxidation rate and the impact of the mobile carbon fraction was constructed and validated against experimental data.

  16. Burning Modes and Oxidation Rates of Soot: Relevance to Diesel Particulate Traps

    Broader source: Energy.gov [DOE]

    Presentation given at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

  17. KONG, JIAN. Infrared-Based Temperature Measurement in Ceramics Grinding and Diesel Exhaust Aftertreatment Filters. (Under the direction of Albert J. Shih)

    E-Print Network [OSTI]

    Shih, Albert J.

    of the temperature distribution on the cavity wall surface in diesel exhaust aftertreatment filters usingABSTRACT KONG, JIAN. Infrared-Based Temperature Measurement in Ceramics Grinding and Diesel Exhaust Aftertreatment Filters. (Under the direction of Albert J. Shih) Non-contact remote-sensing radiation thermometry

  18. Variable power distribution for zoned regeneration of an electrically heated particulate filter

    DOE Patents [OSTI]

    Bhatia, Garima [Bangalore, IN; Gonze, Eugene V [Pinckney, MI

    2012-04-03

    A system includes a particulate matter (PM) filter with multiple zones, an electric heater and a control module. The electrical heater includes heater segments, which each correspond with a respective one of the zones. The electrical heater is arranged upstream from and is proximate with the PM filter. The control module selectively applies a first energy level to a first one of the zones via a first one of the heater segments to initiate regeneration in the first zone. The control module also selectively applies a second energy level that is less than the first energy level to a second one of the zones via a second one of the heater segments to initiate regeneration in the second zone.

  19. Method for contamination control and barrier apparatus with filter for containing waste materials that include dangerous particulate matter

    DOE Patents [OSTI]

    Pinson, P.A.

    1998-02-24

    A container for hazardous waste materials that includes air or other gas carrying dangerous particulate matter has incorporated barrier material, preferably in the form of a flexible sheet, and one or more filters for the dangerous particulate matter sealably attached to such barrier material. The filter is preferably a HEPA type filter and is preferably chemically bonded to the barrier materials. The filter or filters are preferably flexibly bonded to the barrier material marginally and peripherally of the filter or marginally and peripherally of air or other gas outlet openings in the barrier material, which may be a plastic bag. The filter may be provided with a backing panel of barrier material having an opening or openings for the passage of air or other gas into the filter or filters. Such backing panel is bonded marginally and peripherally thereof to the barrier material or to both it and the filter or filters. A coupling or couplings for deflating and inflating the container may be incorporated. Confining a hazardous waste material in such a container, rapidly deflating the container and disposing of the container, constitutes one aspect of the method of the invention. The chemical bonding procedure for producing the container constitutes another aspect of the method of the invention. 3 figs.

  20. Method for contamination control and barrier apparatus with filter for containing waste materials that include dangerous particulate matter

    DOE Patents [OSTI]

    Pinson, Paul A. (Idaho Falls, ID)

    1998-01-01

    A container for hazardous waste materials that includes air or other gas carrying dangerous particulate matter has incorporated in barrier material, preferably in the form of a flexible sheet, one or more filters for the dangerous particulate matter sealably attached to such barrier material. The filter is preferably a HEPA type filter and is preferably chemically bonded to the barrier materials. The filter or filters are preferably flexibly bonded to the barrier material marginally and peripherally of the filter or marginally and peripherally of air or other gas outlet openings in the barrier material, which may be a plastic bag. The filter may be provided with a backing panel of barrier material having an opening or openings for the passage of air or other gas into the filter or filters. Such backing panel is bonded marginally and peripherally thereof to the barrier material or to both it and the filter or filters. A coupling or couplings for deflating and inflating the container may be incorporated. Confining a hazardous waste material in such a container, rapidly deflating the container and disposing of the container, constitutes one aspect of the method of the invention. The chemical bonding procedure for producing the container constitutes another aspect of the method of the invention.

  1. Light absorption from particulate impurities in snow and ice determined by spectrophotometric analysis of filters

    SciTech Connect (OSTI)

    Grenfell, Thomas C.; Doherty, Sarah J.; Clarke, Antony D.; Warren, Stephen G.

    2011-05-10

    Light absorption by particulate impurities in snow and ice can affect the surface albedo and is important for the climate. The absorption properties of these particles can be determined by collecting and melting snow samples and extracting the particulate material by filtration of the meltwater. This paper describes the optical design and testing of a new instrument to measure the absorption spectrum from 400 to 750 nm wavelength of the particles collected on filters using an ''integrating-sandwich'' configuration. The measured absorption is shown to be unaffected by scattering of light from the deposited particulates. A set of calibration standards is used to derive an upper limit for the concentration of black carbon (BC) in the snow. The wavelength dependence of the absorption spectra from 450 to 600 nm is used to calculate an absorption Angstrom exponent for the aerosol. This exponent is used to estimate the actual BC concentration in the snow samples as well as the relative contributions of BC and non-BC constituents to the absorption of solar radiation integrated over the wavelength band 300 to 750 nm.

  2. Advanced Petroleum-Based Fuels - Diesel Emissions Project (APBF-DEC): 2,000-Hour Performance of a NOx Adsorber Catalyst and Diesel Particle Filter System for a Medium-Duty, Pick-Up Diesel Engine Platform; Final Report

    SciTech Connect (OSTI)

    Not Available

    2007-03-01

    Presents the results of a 2,000-hour test of an emissions control system consisting of a nitrogen oxides adsorber catalyst in combination with a diesel particle filter, advanced fuels, and advanced engine controls in an SUV/pick-up truck vehicle platform.

  3. In Vitro Genotoxicity of Gasoline and Diesel Engine Vehicle Exhaust...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Gasoline and Diesel Engine Vehicle Exhaust Particulate and Semi-Volatile Organic Compound Materials In Vitro Genotoxicity of Gasoline and Diesel Engine Vehicle Exhaust Particulate...

  4. The use of CETANER{trademark} for the reduction of particulate matter emissions in a turbocharged direct injection (TDI) diesel engine

    SciTech Connect (OSTI)

    Hess, H.S.; Chiodo, J.A.; Boehman, A.L.; Tijim, P.J.A.; Waller, F.J.

    1999-07-01

    In this experimental study, the effects of the addition of CETANER{trademark} to a premium diesel fuel at various blend levels (5%, 10% and 15% by weight) were evaluated using a 1.9 liter turbocharged direct injection diesel engine. CETANER{trademark}, a product developed by Air Products and Chemicals, Inc., can be manufactured from coal-derived syngas through a two-stage process: (i) Liquid Phase DiMethyl Ether synthesis (LPDME); and (ii) oxidative coupling of DiMethyl Ether (DME) to form long chain linear ethers. When compared to other oxygenated components currently being researched, CETANER has several key advantages: (1) it is derived from a non-petroleum feedstock; (2) it has a cetane number greater than 100; and (3) it will have a cost comparable to diesel fuel. Particulate matter emissions and exhaust gas composition (NOx and CO), were determined at six steady-state engine operating conditions. In addition, fuel properties (viscosity, cloud point, pour point, density, flash point and calorific value) of the various blends were also determined. Engine test results indicate that CETANER is effective in reducing particulate matter emissions at all blend levels tested, without any modifications to engine operating parameters. At the highest blend level (15% CETANER by weight), particulate matter emissions were reduced by greater than 20% when compared to premium diesel fuel.

  5. Diesel particulate trap protection against uncontrolled regeneration via selective flow modulation

    SciTech Connect (OSTI)

    Pattas, K.; Samaras, Z.; Kyriakis, N.; Mihaildis, A.; Manikas, T. [Aristotle Univ. of Thessaloniki (Greece)

    1996-09-01

    Possible techniques to protect the filter against a failure scenario, so far reported, include filter by-passing and limiting the engine A/F ratio. Both techniques aim at controlling the oxygen content of the exhaust gas and thus reducing the oxidation rate in the filter. In this paper a new method for the protection of the trap is presented. This method, called Selective Flow Modulation (SFM) aims at controlling the reaction rate via the modulation of the exhaust gas flow through the filter. For the practical application of such a method, it is necessary to split the filter into at least two parts and to use at least one device for the flow modulation. In addition, a number of different possible SFM configurations are presented and their characteristics are analyzed together with the experimental results of the technique applied on two engines, one heavy and one light duty.

  6. Diesel exhaust aftertreatment 1996

    SciTech Connect (OSTI)

    NONE

    1996-09-01

    The papers in this volume deal in the main with the two most common forms of aftertreatment technology. The first is the trap oxidizer, which is a system for trapping and filtering the particulate matter from the exhaust gas and periodically removing it by thermal oxidation. This process is commonly known as regeneration. The second is the diesel oxidation catalyst. Similar in many ways to the flow through a converter in passenger cars, it oxidizes the soluble organic fraction of the diesel exhaust as well as gaseous hydrocarbons and carbon monoxide. This catalyst is being used in production volumes in heavy duty trucks in the US beginning in 1994. Several papers in this volume deal with the development experience of this converter application. There also is included a series of papers by trap and filter manufacturers dealing with improved materials, making their devices more durable. Papers have been processed separately for inclusion on the data base.

  7. Impact of rail pressure and biodiesel fueling on the particulate morphology and soot nanostructures from a common-rail turbocharged direct injection diesel engine

    SciTech Connect (OSTI)

    Ye, Peng; Vander Wal, Randy; Boehman, Andre L.; Toops, Todd J.; Daw, C. Stuart; Sun, Chenxi; Lapuerta, Magin; Agudelo, John

    2014-12-26

    The effect of rail pressure and biodiesel fueling on the morphology of exhaust particulate agglomerates and the nanostructure of primary particles (soot) was investigated with a common-rail turbocharged direct injection diesel engine. The engine was operated at steady state on a dynamometer running at moderate speed with both low (30%) and medium–high (60%) fixed loads, and exhaust particulate was sampled for analysis. Ultra-low sulfur diesel and its 20% v/v blends with soybean methyl ester biodiesel were used. Fuel injection occurred in a single event around top dead center at three different injection pressures. Exhaust particulate samples were characterized with TEM imaging, scanning mobility particle sizing, thermogravimetric analysis, Raman spectroscopy, and XRD analysis. Particulate morphology and oxidative reactivity were found to vary significantly with rail pressure and with biodiesel blend level. Higher biodiesel content led to increases in the primary particle size and oxidative reactivity but did not affect nanoscale disorder in the as-received samples. For particulates generated with higher injection pressures, the initial oxidative reactivity increased, but there was no detectable correlation with primary particle size or nanoscale disorder.

  8. Impact of rail pressure and biodiesel fueling on the particulate morphology and soot nanostructures from a common-rail turbocharged direct injection diesel engine

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Ye, Peng; Vander Wal, Randy; Boehman, Andre L.; Toops, Todd J.; Daw, C. Stuart; Sun, Chenxi; Lapuerta, Magin; Agudelo, John

    2014-12-26

    The effect of rail pressure and biodiesel fueling on the morphology of exhaust particulate agglomerates and the nanostructure of primary particles (soot) was investigated with a common-rail turbocharged direct injection diesel engine. The engine was operated at steady state on a dynamometer running at moderate speed with both low (30%) and medium–high (60%) fixed loads, and exhaust particulate was sampled for analysis. Ultra-low sulfur diesel and its 20% v/v blends with soybean methyl ester biodiesel were used. Fuel injection occurred in a single event around top dead center at three different injection pressures. Exhaust particulate samples were characterized with TEMmore »imaging, scanning mobility particle sizing, thermogravimetric analysis, Raman spectroscopy, and XRD analysis. Particulate morphology and oxidative reactivity were found to vary significantly with rail pressure and with biodiesel blend level. Higher biodiesel content led to increases in the primary particle size and oxidative reactivity but did not affect nanoscale disorder in the as-received samples. For particulates generated with higher injection pressures, the initial oxidative reactivity increased, but there was no detectable correlation with primary particle size or nanoscale disorder.« less

  9. Measurements of Diesel Truck Traffic Associated with Goods Movement

    E-Print Network [OSTI]

    Houston, Douglas; Krudysz, Margaret; Winer, Arthur

    2007-01-01

    Concentrations of PM2.5 and Diesel Exhaust Particles onPatterns of Measured Port Diesel Traffic. (a) Intersectionof particulate emissions from diesel engines: a review’, J.

  10. A study of the regeneration process in diesel particulate traps using a copper fuel additive

    SciTech Connect (OSTI)

    Tan, J.C.; Opris, C.N.; Baumgard, K.J.; Johnson, J.H. [Michigan Technological Univ., Houghton, MI (United States)

    1996-09-01

    The goals of this research are to understand the regeneration process in ceramic (Cordierite) monolith traps using a copper fuel additive and to investigate the various conditions that lead to trap regeneration failure. The copper additive lowers the trap regeneration temperature from approximately 500 C to 375 C and decreases the time necessary for regeneration. Because of these characteristics, it is important to understand the effect of the additive on regeneration when excessive particulate matter accumulation occurs in the trap. The effects of particulate mass loading on regeneration temperatures and regeneration time were studied for both the controlled (engine operated at full load rated speed) and uncontrolled conditions. The trap peak temperatures were higher for the uncontrolled than the controlled regeneration. The higher peak trap temperatures were predominantly controlled by the effect of the exhaust flow rates on the energy transfer processes. The total regeneration time was faster for the controlled regeneration compared to the uncontrolled regeneration. All traps passed the controlled regeneration tests having maximum temperatures less than 900 C. During the uncontrolled regeneration tests, trap failure occurred at 135 and 139 g particulate matter loadings. The maximum temperatures were in excess of 1,150 C. The pressure drop across the trap was modeled using the one dimensional Darcy`s law which accounted for the pressure drop due to the ceramic wall and the particulate layer. The experimental results for the substrate correlate well with the empirical substrate pressure drop models available in the literature. The models also enable an estimate to be made regarding trap mass loading. These data along with the laboratory data have indicated that mass loadings greater than 110 g followed by high temperature operation and subsequent engine idling can result in trap failures during regeneration.

  11. Driving Down Diesel Emissions

    E-Print Network [OSTI]

    Harley, Robert

    2013-01-01

    is adapted from “Effects of Diesel Particle Filter Retro?tst’s official: exposure to diesel exhaust harms human health.its rankings, shifting diesel exhaust from a probable to a

  12. Method for reducing pressure drop through filters, and filter exhibiting reduced pressure drop

    DOE Patents [OSTI]

    Sappok, Alexander; Wong, Victor

    2014-11-18

    Methods for generating and applying coatings to filters with porous material in order to reduce large pressure drop increases as material accumulates in a filter, as well as the filter exhibiting reduced and/or more uniform pressure drop. The filter can be a diesel particulate trap for removing particulate matter such as soot from the exhaust of a diesel engine. Porous material such as ash is loaded on the surface of the substrate or filter walls, such as by coating, depositing, distributing or layering the porous material along the channel walls of the filter in an amount effective for minimizing or preventing depth filtration during use of the filter. Efficient filtration at acceptable flow rates is achieved.

  13. Full Useful Life (120,000 miles) Exhaust Emission Performance of a NOx Adsorber and Diesel Particle Filter Equipped Passenger Car and Medium-duty Engine in Conjunction with Ultra Low Sulfur Fuel (Presentation)

    SciTech Connect (OSTI)

    Thornton, M.; Tatur, M.; Tomazic, D.; Weber, P.; Webb, C.

    2005-08-25

    Discusses the full useful life exhaust emission performance of a NOx (nitrogen oxides) adsorber and diesel particle filter equipped light-duty and medium-duty engine using ultra low sulfur diesel fuel.

  14. Durability of Diesel Engine Particulate Filters CRADA No. ORNL-04-0692 with Cummins Inc.

    Broader source: Energy.gov [DOE]

    Presentation from the U.S. DOE Office of Vehicle Technologies "Mega" Merit Review 2008 on February 25, 2008 in Bethesda, Maryland.

  15. Testing an Active Diesel Particulate Filter on a 2-Cycle Marine Engine

    Office of Energy Efficiency and Renewable Energy (EERE)

    Presentation given at DEER 2006, August 20-24, 2006, Detroit, Michigan. Sponsored by the U.S. DOE's EERE FreedomCar and Fuel Partnership and 21st Century Truck Programs.

  16. Local Soot Loading Distribution in Cordierite Diesel Particulate Filters by Dynamic Neutron Radiography

    Broader source: Energy.gov [DOE]

    Quantitative analysis of the soot loading and soot distribution for Cordierite type DPFs are studied under controlled conditions.

  17. Partial-Flow Diesel Particulate Filter of Sintered Metal Fiber Fleece

    Broader source: Energy.gov [DOE]

    Poster presented at the 16th Directions in Engine-Efficiency and Emissions Research (DEER) Conference in Detroit, MI, September 27-30, 2010.

  18. Advanced Radio Frequency-Based Sensors for Monitoring Diesel Particulate Filter Loading and Regeneration

    Broader source: Energy.gov [DOE]

    Presentation given at the 16th Directions in Engine-Efficiency and Emissions Research (DEER) Conference in Detroit, MI, September 27-30, 2010.

  19. Development of SCR on Diesel Particulate Filter System for Heavy Duty Applications

    Broader source: Energy.gov [DOE]

    Evaluation of a system consisting of SCRDPF in comparison to a commercial 2010 CDPF system on an engine under high and low engine-out NOx conditions

  20. Failure Stress and Apparent Elastic Modulus of Diesel Particulate Filter Ceramics

    Broader source: Energy.gov [DOE]

    Three established mechanical test specimen geometries and test methods for brittle materials are adapted to DPF architecture to evaluate failure initiation stress and apparent elastic modulus of the ceramics.

  1. On-Board Engine Exhaust Particulate Matter Sensor for HCCI and...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Engine Exhaust Particulate Matter Sensor for HCCI and Conventional Diesel Engines On-Board Engine Exhaust Particulate Matter Sensor for HCCI and Conventional Diesel Engines 2009...

  2. High-Energy Laser Diagnostics (HELD) for the Measurement of Diesel...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    High-Energy Laser Diagnostics (HELD) for the Measurement of Diesel Particulate Matter High-Energy Laser Diagnostics (HELD) for the Measurement of Diesel Particulate Matter 2004...

  3. Systems and methods for controlling diesel engine emissions

    DOE Patents [OSTI]

    Webb, Cynthia Chaffin; Weber, Phillip Anthony; Khair, Magdi K.

    2004-06-01

    Systems and methods for controlling diesel engine emissions, including, for example, oxides of nitrogen emissions, particulate matter emissions, and the like. The emission control system according to this invention is provided in the exhaust passageway of a diesel engine and includes a catalyst-based particulate filter; and first and second lean NO.sub.x trap systems coupled to the catalyst-based particulate filter. The first and second lean NO.sub.x trap systems are arranged in a parallel flow configuration with each other. Each of the first and second lean NO.sub.x trap systems include a carbon monoxide generating catalyst device, a sulfur trap device, a lean NO.sub.x device, a supplemental fuel injector device, and a plurality of flow diverter devices.

  4. Oil Bypass Filter and Diesel Engine Idling Wear-Rate Evaluations...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    2005deerzirker.pdf More Documents & Publications Demonstrated Petroleum Reduction Using Oil Bypass Filter Technology on Heavy and Light Vehicles Development of Partial Filter...

  5. Epidemiological-environmental study of diesel bus garage workers: acute effects of NO/sub 2/ and respirable particulate on the respiratory system

    SciTech Connect (OSTI)

    Gamble, J.; Jones, W.; Minshall, S.

    1987-02-01

    Personal samples of nitrogen dioxide (NO/sub 2/) and respirable particulate (RP) were collected over the shift on 232 workers in four diesel bus garages. Response was assessed by an acute respiratory questionnaire and before and after shift spirometry. Measures of exposure to NO/sub 2/ and RP were associated with work-related symptoms of cough; itching, burning, or watering eyes; difficult or labored breathing; chest tightness; and wheeze. The prevalence of burning eyes, headaches, difficult or labored breathing, nausea, and wheeze experienced at work were higher in the diesel bus garage workers than in a comparison population of battery workers, while the prevalence of headaches was reduced. Mean reductions in forced vital capacity (FVC), forced expiratory volume in 1 sec (FEV1), peak flow, and flows at 50 and 75% of FVC were not obviously different from zero. There was no detectable association of exposure to NO/sub 2/ or respirable particulate and acute reductions in pulmonary function. Workers who often had respiratory work-related symptoms generally had a slightly greater mean acute reduction in FEV1 and FEF50 than did those who did not have these symptoms, but these differences were not statistically significant.

  6. Emissions of Transport Refrigeration Units with CARB Diesel, Gas-to-Liquid Diesel, and Emissions Control Devices

    SciTech Connect (OSTI)

    Barnitt, R. A.; Chernich, D.; Burnitzki, M.; Oshinuga, A.; Miyasato, M.; Lucht, E.; van der Merwe, D.; Schaberg, P.

    2010-05-01

    A novel in situ method was used to measure emissions and fuel consumption of transport refrigeration units (TRUs). The test matrix included two fuels, two exhaust configurations, and two TRU engine operating speeds. Test fuels were California ultra low sulfur diesel and gas-to-liquid (GTL) diesel. Exhaust configurations were a stock muffler and a Thermo King pDPF diesel particulate filter. The TRU engine operating speeds were high and low, controlled by the TRU user interface. Results indicate that GTL diesel fuel reduces all regulated emissions at high and low engine speeds. Application of a Thermo King pDPF reduced regulated emissions, sometimes almost entirely. The application of both GTL diesel and a Thermo King pDPF reduced regulated emissions at high engine speed, but showed an increase in oxides of nitrogen at low engine speed.

  7. Preserving Diesel Exhaust Ultrafine (Nano-) Particulate Structure in Genotoxicity Studies to Support Engineering Development of Emission Controls

    Broader source: Energy.gov [DOE]

    Poster presentation at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

  8. Control of fine particulate emissions from coal-fired utility boilers: Spin filter collection device (rotary cyclone)

    SciTech Connect (OSTI)

    He, Bo X.

    1990-01-01

    A bench-scale test program has been performed to evaluate the concept of placing a porous cylindrical surface (such as a metal screen) at the core of a container and spinning the surface with an external motor for fine particulate/gas separation. The rotating surface enhances the centrifugal effects in the annular region and provides a smooth transition between the flow in the annular and core regions and acts like an enhanced cyclone. It is therefore called a rotary cyclone.'' The porous surface is self-cleaning and offers good steady-state pressure drop characteristics. Objectives of this project are: (1) to carry out theoretical and experimental investigations using the rotary cyclone concept to capture particulates in the 0.5 to 10 micron size range; and (2) to evaluate its economic feasibility based on an engineering scale-up and comparison with conventional fabric filter and electrostatic precipitator systems. It was demonstrated that the efficiency in separating fine particulates is governed by two major characteristics, i.e., the magnitude of the centrifugal force and the approach velocity or the gas-to-surface area ratio. Results from the bench-scale tests have shown a collection efficiency of well over 99% for a typical fly ash. A preliminary conceptual design for a 40 MW installation was developed based on the experimental work. 4 refs., 4 figs., 8 tabs.

  9. Biodiesel Fuel Property Effects on Particulate Matter Reactivity

    SciTech Connect (OSTI)

    Williams, A.; Black, S.; McCormick, R. L.

    2010-06-01

    Controlling diesel particulate emissions to meet the 2007 U.S. standard requires the use of a diesel particulate filter (DPF). The reactivity of soot, or the carbon fraction of particulate matter, in the DPF and the kinetics of soot oxidation are important in achieving better control of aftertreatment devices. Studies showed that biodiesel in the fuel can increase soot reactivity. This study therefore investigated which biodiesel fuel properties impact reactivity. Three fuel properties of interest included fuel oxygen content and functionality, fuel aromatic content, and the presence of alkali metals. To determine fuel effects on soot reactivity, the performance of a catalyzed DPF was measured with different test fuels through engine testing and thermo-gravimetric analysis. Results showed no dependence on the aromatic content or the presence of alkali metals in the fuel. The presence and form of fuel oxygen was the dominant contributor to faster DPF regeneration times and soot reactivity.

  10. Kalman Filtering for Real-Time Individual Cylinder Air Fuel Ratio Observer on a Diesel Engine Test Bench

    E-Print Network [OSTI]

    propose an estimator of the individual cylinder air fuel ratios in a turbocharged Diesel Engine using

  11. Tier 2 Useful Life (120,000 miles) Exhaust Emission Results for a NOx Adsorber and Diesel Particle Filter Equipped Light-Duty Diesel Vehicle

    SciTech Connect (OSTI)

    Tatur, M.; Tomazic, D.; Thornton, M.; Orban, J.; Slone, E.

    2006-05-01

    Investigates the emission control system performance and system desulfurization effects on regulated and unregulated emissions in a light-duty diesel engine.

  12. Coal-fueled diesel technology development Emissions Control

    SciTech Connect (OSTI)

    Van Kleunen, W.; Kaldor, S.; Gal, E.; Mengel, M.; Arnold, M.

    1994-01-01

    GEESI Emissions Control program activity ranged from control concept testing of 10 CFM slipstream from a CWS fuel single cylinder research diesel engine to the design, installation, and operation of a full-size Emissions Control system for a full-size CWS fuel diesel engine designed for locomotive operation.Early 10 CFM slipstream testing program activity was performed to determine Emissions Characteristics and to evaluate Emissions Control concepts such a Barrier filtration, Granular bed filtration, and Cyclone particulate collection for reduction of particulate and gaseous emissions. Use of sorbent injection into the engine exhaust gas upstream of the barrier filter or use of sorbent media in the granular bed filter were found to provide reduction of exhaust gas SO{sub 2} and NO{sub x} in addition to collection of ash particulate. Emergence of the use of barrier filtration as a most practical Emissions Control concept disclosed a need to improve cleanability of the filter media in order to avoid reduction of turbocharger performance by excessive barrier filter pressure drop. The next progression of program activity, after the slipstream feasibility state, was 500 CFM cold flow testing of control system concepts. The successful completion of 500 CFM cold flow testing of the Envelope Filter led to a subsequent progression to a similar configuration Envelope Filter designed to operate at 500 CFM hot gas flow from the CWS fuel research diesel engine in the GETS engine test laboratory. This Envelope Filter included the design aspect proven by cold flow testing as well as optimization of the selection of the installed filter media.

  13. Bench-scale system design to screen catalyst-coated fabric filters for simultaneous NO{sub x} and particulate control

    SciTech Connect (OSTI)

    Ness, S.R.; Ludlow, D.K. [Univ. of North Dakota, Grand Forks, ND (United States)

    1995-12-31

    A bench-scale system was constructed at the Energy and Environmental Research Center (EERC) to screen performance of various types of V/Ti catalyst-coated, high-temperature, fabric filters manufactured at Owens-Corning, Inc. (OCF). This product is targeted for use in utility and industrial facilities for simultaneous NO{sub x} and particulate control. Described in this paper are the bench-scale system design, operation, and validation of the data produced. 9 refs., 3 figs.

  14. Review of Diesel Exhaust Aftertreatment Programs

    SciTech Connect (OSTI)

    Ronald L. Graves

    1999-04-26

    The DOE Office of Heavy Vehicle Technologies (OHVT) and its predecessor organizations have maintained aggressive projects in diesel exhaust aftertreatment since 1993. The Energy Policy Act of 1992, Section 2027, specifically authorized DOE to help accelerate the ability of U. S. diesel engine manufacturers to meet emissions regulations while maintaining the compression ignition engines inherently high efficiency. A variety of concepts and devices have been evaluated for NOx and Particulate matter (PM) control. Additionally, supporting technology in diagnostics for catalysis, PM measurement, and catalyst/reductant systems are being developed. This paper provides a summary of technologies that have been investigated and provides recent results from ongoing DOE-sponsored R and D. NOx control has been explored via active NOx catalysis, several plasma-assisted systems, electrochemical cells, and fuel additives. Both catalytic and non-catalytic filter technologies have been investigated for PM control.

  15. Characteristics and Effects of Lubricant Additive Chemistry and Exhaust Conditions on Diesel Particulate Filter Service Life and Vehicle Fuel Economy

    Broader source: Energy.gov [DOE]

    qAsh accumulation is a dynamic process - Ash first primarily accumulates along channel walls before forming end plugs at the back of the DPF.

  16. Vehicle Technologies Office Merit Review 2014: Durability of Diesel Particulate Filters (Agreement ID:10461) Project ID:18519

    Broader source: Energy.gov [DOE]

    Presentation given by Oak Ridge National Laboratory at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about durability of...

  17. Drive cycle analysis of butanol/diesel blends in a light-duty vehicle.

    SciTech Connect (OSTI)

    Miers, S. A.; Carlson, R. W.; McConnell, S. S.; Ng, H. K.; Wallner, T.; LeFeber, J.; Energy Systems; Esper Images Video & Multimedia

    2008-10-01

    The potential exists to displace a portion of the petroleum diesel demand with butanol and positively impact engine-out particulate matter. As a preliminary investigation, 20% and 40% by volume blends of butanol with ultra low sulfur diesel fuel were operated in a 1999 Mercedes Benz C220 turbo diesel vehicle (Euro III compliant). Cold and hot start urban as well as highway drive cycle tests were performed for the two blends of butanol and compared to diesel fuel. In addition, 35 MPH and 55 MPH steady-state tests were conducted under varying road loads for the two fuel blends. Exhaust gas emissions, fuel consumption, and intake and exhaust temperatures were acquired for each test condition. Filter smoke numbers were also acquired during the steady-state tests.

  18. Water washable stainless steel HEPA filter

    DOE Patents [OSTI]

    Phillips, Terrance D. (617 Chestnut Ct., Aiken, SC 29803)

    2001-01-01

    The invention is a high efficiency particulate (HEPA) filter apparatus and system, and method for assaying particulates. The HEPA filter provides for capture of 99.99% or greater of particulates from a gas stream, with collection of particulates on the surface of the filter media. The invention provides a filter system that can be cleaned and regenerated in situ.

  19. Particulate Generation in Tritium Systems

    Office of Environmental Management (EM)

    after 10 years of operation. * Tritium processing interrupted when other filters (flow orifices) became plugged approximately two weeks later * A fine particulate was found...

  20. Effect of Biodiesel Blending on the Speciation of Soluble Organic Fraction from a Light Duty Diesel Engine

    SciTech Connect (OSTI)

    Strzelec, Andrea [ORNL] [ORNL; Storey, John Morse [ORNL] [ORNL; Lewis Sr, Samuel Arthur [ORNL] [ORNL; Daw, C Stuart [ORNL] [ORNL; Foster, Prof. Dave [University of Wisconsin] [University of Wisconsin; Rutland, Prof. Christopher J. [University of Wisconsin] [University of Wisconsin

    2010-01-01

    Soy methyl ester (SME) biodiesel was volumetrically blended with 2007 certification ultra low sulfur diesel (ULSD) fuel and run in a 1.7L direct-injection common rail diesel engine at one speed-load point (1500rpm, 2.6bar BMEP). Engine fueling rate and injection timing were adjusted to maintain a constant load, while particulate samples were collected in a diesel particulate filter (DPF) and with a dilution tunnel sampling train. The samples collected at these two locations were found to contain different levels of soluble organic fraction (SOF) and the different hydrocarbon species in the SOF. This observation indicates that traditional SOF measurements, in light of the specific sampling procedure used, may not be appropriate to DPF applications.

  1. In Vitro Genotoxicity of Particulate and Semi-Volatile Organic...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Particulate and Semi-Volatile Organic Compound Exhaust Materails from a Set of Gasoline and a Set of Diesel Engine Vehicles Operated at 30F In Vitro Genotoxicity of Particulate...

  2. Carbonyl Emissions from Gasoline and Diesel Motor Vehicles

    E-Print Network [OSTI]

    Jakober, Chris A.

    2008-01-01

    fraction of light-duty gasoline vehicle particulate matterQuinone emissions from gasoline and diesel motor vehicles.32 organic compounds from gasoline- powered motor vehicles.

  3. Simulating Study of Premixed Charge Compression Ignition on Light-Duty Diesel Fuel Economy and Emissions Control

    SciTech Connect (OSTI)

    Gao, Zhiming [ORNL] [ORNL; Daw, C Stuart [ORNL] [ORNL; Wagner, Robert M [ORNL] [ORNL

    2012-01-01

    We utilize the Powertrain Systems Analysis Toolkit (PSAT) combined with transient engine and aftertreatment component models to simulate the impact of premixed charge compression ignition (PCCI) on the fuel economy and emissions of light-duty (LD) diesel-powered conventional and hybrid electric vehicles (HEVs). Our simulated aftertreatment train consists of a diesel oxidation catalyst (DOC), lean NOx trap (LNT), and catalyzed diesel particulate filter (DPF). The results indicate that utilizing PCCI combustion significantly reduces fuel consumption and tailpipe emissions for the conventional diesel-powered vehicle with NOx and particulate emissions controls. These benefits result from a favorable engine speed-load distribution over the cycle combined with a corresponding reduction in the need to regenerate the LNT and DPF. However, the current PCCI technology appears to offer less potential benefit for diesel HEVs equipped with similar emissions controls. This is because PCCI can only be activated over a relatively small part of the drive cycle. Thus we conclude that future utilization of PCCI in diesel HEVs will require significant extension of the available speed-load range for PCCI and revision of current HEV engine management strategies before significant benefits can be realized.

  4. Cross-flow, filter-sorbent catalyst for particulate, SO sub 2 and NO sub x control

    SciTech Connect (OSTI)

    Benedek, K. (Little (Arthur D.), Inc., Cambridge, MA (United States)); Flytzani-Stephanopoulos, M. (Massachusetts Inst. of Tech., Cambridge, MA (United States))

    1992-01-01

    This report describes work performed on a new concept for integrated pollutant control: a cross-flow filter comprised of layered, gas permeable membranes that act as a particle filter, an SO {sub 2} sorbent, and a NO {sub x} reduction catalyst. One critical element of the R D program is the development of mixed metal oxide materials that serve as combined SO {sub 2} sorbents and NO {sub x} reduction catalysts. In this seventh quarterly progress report, we summarize the performance characteristics of three promising sorbent/catalyst materials tested in powder form.

  5. Rigid porous filter

    DOE Patents [OSTI]

    Chiang, Ta-Kuan (Morgantown, WV); Straub, Douglas L. (Morgantown, WV); Dennis, Richard A. (Morgantown, WV)

    2000-01-01

    The present invention involves a porous rigid filter including a plurality of concentric filtration elements having internal flow passages and forming external flow passages there between. The present invention also involves a pressure vessel containing the filter for the removal of particulates from high pressure particulate containing gases, and further involves a method for using the filter to remove such particulates. The present filter has the advantage of requiring fewer filter elements due to the high surface area-to-volume ratio provided by the filter, requires a reduced pressure vessel size, and exhibits enhanced mechanical design properties, improved cleaning properties, configuration options, modularity and ease of fabrication.

  6. Emission Characteristics of a Diesel Engine Operating with In-Cylinder Gasoline and Diesel Fuel Blending

    SciTech Connect (OSTI)

    Prikhodko, Vitaly Y; Curran, Scott; Barone, Teresa L; Lewis Sr, Samuel Arthur; Storey, John Morse; Cho, Kukwon; Wagner, Robert M; Parks, II, James E

    2010-01-01

    Advanced combustion regimes such as homogeneous charge compression ignition (HCCI) and premixed charge compression ignition (PCCI) offer benefits of reduced nitrogen oxides (NOx) and particulate matter (PM) emissions. However, these combustion strategies often generate higher carbon monoxide (CO) and hydrocarbon (HC) emissions. In addition, aldehydes and ketone emissions can increase in these modes. In this study, the engine-out emissions of a compression-ignition engine operating in a fuel reactivity- controlled PCCI combustion mode using in-cylinder blending of gasoline and diesel fuel have been characterized. The work was performed on a 1.9-liter, 4-cylinder diesel engine outfitted with a port fuel injection system to deliver gasoline to the engine. The engine was operated at 2300 rpm and 4.2 bar brake mean effective pressure (BMEP) with the ratio of gasoline to diesel fuel that gave the highest engine efficiency and lowest emissions. Engine-out emissions for aldehydes, ketones and PM were compared with emissions from conventional diesel combustion. Sampling and analysis was carried out following micro-tunnel dilution of the exhaust. Particle geometric mean diameter, number-size distribution, and total number concentration were measured by a scanning mobility particle sizer (SMPS). For the particle mass measurements, samples were collected on Teflon-coated quartz-fiber filters and analyzed gravimetrically. Gaseous aldehydes and ketones were sampled using dinitrophenylhydrazine-coated solid phase extraction cartridges and the extracts were analyzed by liquid chromatography/mass spectrometry (LC/MS). In addition, emissions after a diesel oxidation catalyst (DOC) were also measured to investigate the destruction of CO, HC and formaldehydes by the catalyst.

  7. Assessing Exposures to Particulate Matter and Manganese in Welding Fumes

    E-Print Network [OSTI]

    LIU, SA

    2010-01-01

    limit PM: particulate matter PTFE: polytetrafluoroethylenepolytetrafluoroethylene (PTFE) with polymethylpentenethrough the OPC and a 47 mm PTFE filter (Grimm Technologies,

  8. Impact of Fuel Metal Impurities on the Durability of a Light-Duty Diesel Aftertreatment System

    SciTech Connect (OSTI)

    Williams, A.; Burton, J.; McCormick, R. L.; Toops, T.; Wereszczak, A. A.; Fox, E. E.; Lance, M. J.; Cavataio, G.; Dobson, D.; Warner, J.; Brezny, R.; Nguyen, K.; Brookshear, D. W.

    2013-04-01

    Alkali and alkaline earth metal impurities found in diesel fuels are potential poisons for diesel exhaust catalysts. A set of diesel engine production exhaust systems was aged to 150,000 miles. These exhaust systems included a diesel oxidation catalyst, selective catalytic reduction (SCR) catalyst, and diesel particulate filter (DPF). Four separate exhaust systems were aged, each with a different fuel: ultralow sulfur diesel containing no measureable metals, B20 (a common biodiesel blend) containing sodium, B20 containing potassium, and B20 containing calcium, which were selected to simulate the maximum allowable levels in B100 according to ASTM D6751. Analysis included Federal Test Procedure emissions testing, bench-flow reactor testing of catalyst cores, electron probe microanalysis (EPMA), and measurement of thermo-mechanical properties of the DPFs. EPMA imaging found that the sodium and potassium penetrated into the washcoat, while calcium remained on the surface. Bench-flow reactor experiments were used to measure the standard nitrogen oxide (NOx) conversion, ammonia storage, and ammonia oxidation for each of the aged SCR catalysts. Vehicle emissions tests were conducted with each of the aged catalyst systems using a chassis dynamometer. The vehicle successfully passed the 0.2 gram/mile NOx emission standard with each of the four aged exhaust systems.

  9. Diesel Truck Traffic in Low-Income and Minority Communities Adjacent to Ports: Environmental Justice Implications of Near-Roadway Land Use Conflicts

    E-Print Network [OSTI]

    Houston, Douglas; Krudysz, Margaret; Winer, Arthur

    2008-01-01

    Particulate Emissions from Diesel Engines: A Review. JournalExposure of PM2.5 and EC from Diesel and Gasoline Vehiclesa Major Highway with Heavy-Duty Diesel Traffic. Atmospheric

  10. Emissions From Various Biodiesel Sources Compared to a Range of Diesel Fuels in DPF Equipped Diesel Engines

    SciTech Connect (OSTI)

    Williams, A.; Burton, J.; Christensen, E.; McCormick, R. L.; Tester, J.

    2011-01-01

    The purpose of this study was to measure the impact of various sources of petroleum-based and bio-based diesel fuels on regulated emissions and fuel economy in diesel particulate filter (DPF) equipped diesel engines. Two model year 2008 diesel engines were tested with nine fuels including a certification ultra-low sulfur diesel (ULSD), local ULSD, high aromatic ULSD, low aromatic ULSD, and twenty percent blends of biodiesel derived from algae, camelina, soy, tallow, and yellow grease. Regulated emissions were measured over the heavy duty diesel transient test cycle. Measurements were also made of DPF-out particle size distribution and total particle count from a 13-mode steady state test using a fast mobility particle sizer. Test engines were a 2008 Cummins ISB and a 2008 International Maxx Force 10, both equipped with actively regenerated DPFs. Fuel consumption was roughly 2% greater over the transient test cycle for the B20 blends versus certification ULSD in both engines, consistent with the slightly lower energy content of biodiesel. Unlike studies conducted on older model engines, these engines equipped with diesel oxidation catalysts and DPFs showed small or no measurable fuel effect on the tailpipe emissions of total hydrocarbons (THC), carbon monoxide (CO) and particulate matter (PM). No differences in particle size distribution or total particle count were seen in a comparison of certification ULSD and B20 soy, with the exception of engine idling conditions where B20 produced a small reduction in the number of nucleation mode particles. In the Cummins engine, B20 prepared from algae, camelina, soy, and tallow resulted in an approximately 2.5% increase in nitrogen oxides (NO{sub x}) compared to the base fuel. The International engine demonstrated a higher degree of variability for NO{sub x} emissions, and fuel effects could not be resolved (p > 0.05). The group of petroleum diesel test fuels produced a range of NO{sub x} emissions very similar to that caused by blending of biodiesel. Test cycles where an active regeneration of the DPF occurred resulted in a nearly threefold increase in NO{sub x} emissions and a 15% increase in fuel consumption. The full quantification of DPF regeneration events further complicates the accurate calculation of fuel impacts on emissions and fuel consumption.

  11. Beyond Diesel - Renewable Diesel

    SciTech Connect (OSTI)

    Not Available

    2002-07-01

    CTTS fact sheet describing NREL's new Renewable Fuels and Lubricants (ReFUEL) Research Laboratory, which will be used to facilitate increased renewable diesel use in heavy-duty vehicles.

  12. Implications of Low Particulate Matter Emissions on System Fuel Efficiency for High Efficiency Clean Combustion

    SciTech Connect (OSTI)

    Parks, II, James E; Prikhodko, Vitaly Y

    2009-01-01

    Advanced diesel combustion regimes such as High Efficiency Clean Combustion (HECC) offer the benefits of reduced engine out NOX and particulate matter (PM) emissions. Lower PM emissions during advanced combustion reduce the demand on diesel particulate filters (DPFs) and can, thereby, reduce the fuel penalty associated with DPF regeneration. In this study, a SiC DPF was loaded and regenerated on a 1.7-liter 4-cylinder diesel engine operated in conventional and advanced combustion modes at different speed and load conditions. A diesel oxidation catalyst (DOC) and a lean NOX trap (LNT) were also installed in the exhaust stream. Five steady-state speed and load conditions were weighted to estimate Federal Test Procedure (FTP) fuel efficiency. The DPF was loaded using lean-rich cycling with frequencies that resulted in similar levels of NOX emissions downstream of the LNT. The pressure drop across the DPF was measured at a standard point (1500 rpm, 5.0 bar) before and after loading, and a P rise rate was determined for comparison between conventional and advanced combustion modes. Higher PM emissions in conventional combustion resulted in a higher rate of backpressure rise across the DPF at all of the load points leading to more frequent DPF regenerations and higher fuel penalty. The fuel penalty during conventional combustion was 4.2% compared with 3.1% for a mixture of conventional and advanced modes.

  13. COMPARISON OF CLEAN DIESEL BUSES TO CNG BUSES

    SciTech Connect (OSTI)

    Lowell, D.; Parsley, W.; Bush,C; Zupo, D.

    2003-08-24

    Using previously published data on regulated and unregulated emissions, this paper will compare the environmental performance of current generation transit buses operated on compressed natural gas (CNG) to current generation transit buses operated on ultra low sulfur diesel fuel (ULSD) and incorporating diesel particulate filters (DPF). Unregulated emissions evaluated include toxic compounds associated with adverse health effects (carbonyl, PAH, NPAH, benzene) as well as PM particle count and size distribution. For all regulated and unregulated emissions, both technologies are shown to be comparable. DPF equipped diesel buses and CNG buses have virtually identical levels of PM mass emissions and particle number emissions. DPF-equipped diesel buses have lower HC and CO emissions and lower emissions of toxic substances such as benzene, carbonyls and PAHs than CNG buses. CNG buses have lower NOx emissions than DPF-equipped buses, though CNG bus NOx emissions are shown to be much more variable. In addition, this paper will compare the capital and operating costs of CNG and DPF-equipped buses. The cost comparison is primarily based on the experience of MTA New York City Transit in operating CNG buses since 1995 and DPF-equipped buses fueled with ULSD since 2001. Published data on the experience of other large transit agencies in operating CNG buses is used to validate the NYCT experience. The incremental cost (compared to ''baseline'' diesel) of operating a typical 200-bus depot is shown to be six times higher for CNG buses than for ''clean diesel'' buses. The contributors to this increased cost for CNG buses are almost equally split between increased capital costs for purchase of buses and installation of fueling infrastructure, and increased operating costs for purchase of fuel, bus maintenance, and fuel station maintenance.

  14. Diesel Exhaust Emissions Control for Light-Duty Vehicles

    SciTech Connect (OSTI)

    Mital, R.; Li, J.; Huang, S. C.; Stroia, B. J.; Yu, R. C. (Cummins, Inc.); Anderson, J.A. (Argonne National Laboratory); Howden, Kenneth C. (U.S. Department of Energy)

    2003-03-01

    The objective of this paper is to present the results of diesel exhaust aftertreatment testing and analysis done under the FreedomCAR program. Nitrogen Oxides (NOx) adsorber technology was selected based on a previous investigation of various NOx aftertreatment technologies including non-thermal plasma, NOx adsorber and active lean NOx. Particulate Matter (PM) emissions were addressed by developing a catalyzed particulate filter. After various iterations of the catalyst formulation, the aftertreatment components were integrated and optimized for a light duty vehicle application. This compact exhaust aftertreatment system is dual leg and consists of a sulfur trap, NOx adsorbers, and catalyzed particulate filters (CPF). During regeneration, supplementary ARCO ECD low-sulfur diesel fuel is injected upstream of the adsorber and CPF in the exhaust. Steady state and transient emission test results with and without the exhaust aftertreatment system (EAS) are presented. Results of soot filter regeneration by injecting low-sulfur diesel fuel and slip of unregulated emissions, such as NH3, are discussed. Effects of adsorber size and bypass strategy on NOx conversion efficiency and fuel economy penalty are also presented in this paper. The results indicate that if the supplementary fuel injection is optimized, NH3 slip is negligible. During the FTP cycle, injection of low sulfur diesel fuel can create temperature exotherms high enough to regenerate a loaded CPF. With the optimized NOx adsorber regeneration strategies the fuel injection penalty can be reduced by 40 to 50%. Results for various other issues like low temperature light off, reductant optimization, exhaust sulfur management, system integration and design trade-off, are also presented and discussed in this paper. (SAE Paper SAE-2003-01-0041 © 2003 SAE International. This paper is published on this website with permission from SAE International. As a user of this website, you are permitted to view this paper on-line, download this pdf file and print one copy of this paper at no cost for your use only. The downloaded pdf file and printout of this SAE paper may not be copied, distributed or forwarded to others or for the use of others.)

  15. Diesel hybridization and emissions.

    SciTech Connect (OSTI)

    Pasquier, M.; Monnet, G.

    2004-04-21

    The CTR Vehicle Systems and Fuels team a diesel hybrid powertrain. The goal of this experiment was to investigate and demonstrate the potential of diesel engines for hybrid electric vehicles (HEVs) in a fuel economy and emissions. The test set-up consisted of a diesel engine coupled to an electric motor driving a Continuously Variable Transmission (CVT). This hybrid drive is connected to a dynamometer and a DC electrical power source creating a vehicle context by combining advanced computer models and emulation techniques. The experiment focuses on the impact of the hybrid control strategy on fuel economy and emissions-in particular, nitrogen oxides (NO{sub x}) and particulate matter (PM). The same hardware and test procedure were used throughout the entire experiment to assess the impact of different control approaches.

  16. Diesel Engine Idling Test

    SciTech Connect (OSTI)

    Larry Zirker; James Francfort; Jordon Fielding

    2006-02-01

    In support of the Department of Energy’s FreedomCAR and Vehicle Technology Program Office goal to minimize diesel engine idling and reduce the consumption of millions of gallons of diesel fuel consumed during heavy vehicle idling periods, the Idaho National Laboratory (INL) conducted tests to characterize diesel engine wear rates caused by extended periods of idling. INL idled two fleet buses equipped with Detroit Diesel Series 50 engines, each for 1,000 hours. Engine wear metals were characterized from weekly oil analysis samples and destructive filter analyses. Full-flow and the bypass filter cartridges were removed at four stages of the testing and sent to an oil analysis laboratory for destructive analysis to ascertain the metals captured in the filters and to establish wear rate trends. Weekly samples were sent to two independent oil analysis laboratories. Concurrent with the filter analysis, a comprehensive array of other laboratory tests ascertained the condition of the oil, wear particle types, and ferrous particles. Extensive ferrogram testing physically showed the concentration of iron particles and associated debris in the oil. The tests results did not show the dramatic results anticipated but did show wear trends. New West Technologies, LLC, a DOE support company, supplied technical support and data analysis throughout the idle test.

  17. A Study of Emissions from a Light Duty Diesel Engine with the...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    A Study of Emissions from a Light Duty Diesel Engine with the European Particulate Measurement Programme A Study of Emissions from a Light Duty Diesel Engine with the European...

  18. HEPA filter dissolution process

    DOE Patents [OSTI]

    Brewer, K.N.; Murphy, J.A.

    1994-02-22

    A process is described for dissolution of spent high efficiency particulate air (HEPA) filters and then combining the complexed filter solution with other radioactive wastes prior to calcining the mixed and blended waste feed. The process is an alternate to a prior method of acid leaching the spent filters which is an inefficient method of treating spent HEPA filters for disposal. 4 figures.

  19. Hepa filter dissolution process

    DOE Patents [OSTI]

    Brewer, Ken N. (Arco, ID); Murphy, James A. (Idaho Falls, ID)

    1994-01-01

    A process for dissolution of spent high efficiency particulate air (HEPA) filters and then combining the complexed filter solution with other radioactive wastes prior to calcining the mixed and blended waste feed. The process is an alternate to a prior method of acid leaching the spent filters which is an inefficient method of treating spent HEPA filters for disposal.

  20. SCR-DPF Integrations for Diesel ExhaustPerformance and Perspectives for High SCR Loadings

    Broader source: Energy.gov [DOE]

    Presents laboratory and engine bench test results from integrating the SCR catalyst into the diesel filter as one multifunctional unit.

  1. Filter apparatus

    DOE Patents [OSTI]

    Kuban, Daniel P. (Oak Ridge, TN); Singletary, B. Huston (Oak Ridge, TN); Evans, John H. (Rockwood, TN)

    1984-01-01

    A plurality of holding tubes are respectively mounted in apertures in a partition plate fixed in a housing receiving gas contaminated with particulate material. A filter cartridge is removably held in each holding tube, and the cartridges and holding tubes are arranged so that gas passes through apertures therein and across the partition plate while particulate material is collected in the cartridges. Replacement filter cartridges are respectively held in holding canisters mounted on a support plate which can be secured to the aforesaid housing, and screws mounted on said canisters are arranged to push replacement cartridges into the cartridge holding tubes and thereby eject used cartridges therefrom.

  2. Advanced High Porosity Ceramic Honeycomb Wall Flow Filters |...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Porosity Ceramic Honeycomb Wall Flow Filters Advanced High Porosity Ceramic Honeycomb Wall Flow Filters 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007)....

  3. Filtering apparatus

    DOE Patents [OSTI]

    Haldipur, G.B.; Dilmore, W.J.

    1992-09-01

    A vertical vessel is described having a lower inlet and an upper outlet enclosure separated by a main horizontal tube sheet. The inlet enclosure receives the flue gas from a boiler of a power system and the outlet enclosure supplies cleaned gas to the turbines. The inlet enclosure contains a plurality of particulate-removing clusters, each having a plurality of filter units. Each filter unit includes a filter clean-gas chamber defined by a plate and a perforated auxiliary tube sheet with filter tubes suspended from each tube sheet and a tube connected to each chamber for passing cleaned gas to the outlet enclosure. The clusters are suspended from the main tube sheet with their filter units extending vertically and the filter tubes passing through the tube sheet and opening in the outlet enclosure. The flue gas is circulated about the outside surfaces of the filter tubes and the particulate is absorbed in the pores of the filter tubes. Pulses to clean the filter tubes are passed through their inner holes through tubes free of bends which are aligned with the tubes that pass the clean gas. 18 figs.

  4. Filtering apparatus

    DOE Patents [OSTI]

    Haldipur, Gaurang B. (Monroeville, PA); Dilmore, William J. (Murrysville, PA)

    1992-01-01

    A vertical vessel having a lower inlet and an upper outlet enclosure separated by a main horizontal tube sheet. The inlet enclosure receives the flue gas from a boiler of a power system and the outlet enclosure supplies cleaned gas to the turbines. The inlet enclosure contains a plurality of particulate-removing clusters, each having a plurality of filter units. Each filter unit includes a filter clean-gas chamber defined by a plate and a perforated auxiliary tube sheet with filter tubes suspended from each tube sheet and a tube connected to each chamber for passing cleaned gas to the outlet enclosure. The clusters are suspended from the main tube sheet with their filter units extending vertically and the filter tubes passing through the tube sheet and opening in the outlet enclosure. The flue gas is circulated about the outside surfaces of the filter tubes and the particulate is absorbed in the pores of the filter tubes. Pulses to clean the filter tubes are passed through their inner holes through tubes free of bends which are aligned with the tubes that pass the clean gas.

  5. Zevenhoven & Kilpinen PARTICULATES 4.2.2004 5-33 Figure 5.33 Baghouse filter systems based on inside out (left)

    E-Print Network [OSTI]

    Zevenhoven, Ron

    materials textile, plastics, ceramic Removal efficieny Rigid barrier filters made of metal or of sintered

  6. Zevenhoven & Kilpinen PARTICULATES 12.6.2001 5-32 Figure 5.33 Baghouse filter systems based on inside out (left)

    E-Print Network [OSTI]

    Laughlin, Robert B.

    materials textile, plastics, ceramic Removal efficieny Rigid barrier filters made of metal or of sintered

  7. Non-thermal Aftertreatment of Particulates

    SciTech Connect (OSTI)

    Thomas, S.E.

    2000-08-20

    Modern diesel passenger vehicles employing common rail, high speed direct injection engines are capable of matching the drivability of gasoline powered vehicles with the additional benefit of providing high torque at low engine speed [1]. The diesel engine also offers considerable fuel economy and CO2 emissions advantages. However, future emissions standards [2,3] present a significant challenge for the diesel engine, as its lean exhaust precludes the use of aftertreatment strategies employing 3- way catalytic converters, which operate under stoichiometric conditions. In recent years significant developments by diesel engine manufacturers have greatly reduced emissions of both particulates (PM) and oxides of nitrogen (NOx) [4,5]. However to achieve compliance with future legislative limits it has been suggested that an integrated approach involving a combination of engine modifications and aftertreatment technology [1] will be required. A relatively new approach to exhaust aftertreatment is the application of non-thermal plasma (NTP) or plasma catalyst hybrid systems. These have the potential for treatment of both NOx and PM emissions [6- 8]. The primary focus of recent plasma aftertreatment studies [9-12] has concentrated on the removal of NOx. It has been shown that by combining plasmas with catalysts it is possible to chemically reduce NOx. The most common approach is to use a 2- stage system relying upon the plasma oxidation of hydrocarbons to promote NO to NO2 conversion as a precursor to NO2 reduction over a catalyst. However, relatively little work has yet been published on the oxidation of PM by plasma [ 8,13]. Previous investigations [8] have reported that a suitably designed NTP reactor containing a packing material designed to filter and retain PM can effect the oxidation of PM in diesel exhausts at low temperatures. It has been suggested that the retained PM competes with hydrocarbons for O, and possibly OH, radicals. This is an important consideration in plasma - catalyst hybrid schemes for the removal of NOx employing an NO2 selective catalyst, as the oxidation of PM may deplete the key radicals necessary for NO to NO2 conversion. It was also suggested that where simultaneous NOx and PM removal are required, alternative catalyst formulations may be needed which may be selective to NO rather than NO2.

  8. Process for particulate removal from coal liquids

    DOE Patents [OSTI]

    Rappe, Gerald C. (Macungie, PA)

    1983-01-01

    Suspended solid particulates are removed from liquefied coal products by first subjecting such products to hydroclone action for removal in the underflow of the larger size particulates, and then subjecting the overflow from said hydroclone action, comprising the residual finer particulates, to an electrostatic field in an electrofilter wherein such finer particulates are deposited in the bed of beads of dielectric material on said filter. The beads are periodically cleaned by backwashing to remove the accumulated solids.

  9. Investigation of Nitro-Organic Compounds in Diesel Engine Exhaust: Final Report, February 2007 - April 2008

    SciTech Connect (OSTI)

    Dane, J.; Voorhees, K. J.

    2010-06-01

    The National Renewable Energy Laboratory upgraded its ReFUEL engine and vehicle testing facility to speciate unregulated gas-phase emissions. To complement this capability, the laboratory contracted with the Colorado School of Mines (CSM) to study the effects of soy biodiesel fuel and a diesel particle filter (DPF) on emissions of polycyclic aromatic hydrocarbons (PAH) and nitro-polycyclic aromatic hydrocarbons (NPAH). CSM developed procedures to sample diesel particulate matter (PM) emissions from raw and diluted exhaust, with and without a DPF. They also developed improved procedures for extracting PAH and NPAH from the PM and quantifying them with a gas chromatograph-electron monochromator mass spectrometer. The study found the DPF generally reduced PAH emissions by 1 to 3 orders of magnitude. PAH conversion was lowest for B100, suggesting that PAHs were forming in the DPF. Orders of magnitude reductions were also found for NPAH emissions exiting the DPF.

  10. Simulated comparisons of emissions and fuel efficiency of diesel and gasoline hybrid electric vehicles

    SciTech Connect (OSTI)

    Gao, Zhiming [ORNL; Chakravarthy, Veerathu K [ORNL; Daw, C Stuart [ORNL

    2011-01-01

    This paper presents details and results of hybrid and plug-in hybrid electric passenger vehicle (HEV and PHEV) simulations that account for the interaction of thermal transients from drive cycle demands and engine start/stop events with aftertreatment devices and their associated fuel penalties. The simulations were conducted using the Powertrain Systems Analysis Toolkit (PSAT) software developed by Argonne National Laboratory (ANL) combined with aftertreatment component models developed at Oak Ridge National Lab (ORNL). A three-way catalyst model is used in simulations of gasoline powered vehicles while a lean NOx trap model in used to simulated NOx reduction in diesel powered vehicles. Both cases also use a previously reported methodology for simulating the temperature and species transients associated with the intermittent engine operation and typical drive cycle transients which are a significant departure from the usual experimental steady-state engine-map based approach adopted often in vehicle system simulations. Comparative simulations indicate a higher efficiency for diesel powered vehicles but the advantage is lowered by about a third (for both HEVs and PHEVs) when the fuel penalty associated with operating a lean NOx trap is included and may be reduced even more when fuel penalty associated with a particulate filter is included in diesel vehicle simulations. Through these preliminary studies, it is clearly demonstrated how accurate engine and exhaust systems models that can account for highly intermittent and transient engine operation in hybrid vehicles can be used to account for impact of emissions in comparative vehicle systems studies. Future plans with models for other devices such as particulate filters, diesel oxidation and selective reduction catalysts are also discussed.

  11. Development of Radio Frequency Diesel Particulate Filter Sensor and Controls for Advanced Low-Pressure Drop Systems to Reduce Engine Fuel Consumption

    Office of Energy Efficiency and Renewable Energy (EERE)

    2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

  12. Diesel knock noise from combustion phenomenon to perceived signals

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Diesel knock noise from combustion phenomenon to perceived signals O. Sauvagea , A. Lauracb , M for reducing Diesel knock are modifications of engine parameters used for controlling combustion processes filters allowing realistic overall Diesel noise re-synthesises from cylinder pressure signals. Cylinder

  13. Control of the emissions of transportation and stationary diesel engines

    SciTech Connect (OSTI)

    Levendis, Y.A. [Northeastern Univ., Boston, MA (United States). Dept. of Mechanical, Industrial and Manufacturing Engineering

    1996-12-31

    This manuscript describes a novel exhaust aftertreatment system for effective reduction of all diesel engine emissions. This system employs high-efficiency ceramic filter elements and filtered exhaust gas recirculation (EGR) to control particulate and NO{sub x} emissions. The filters are periodically regenerated aerodynamically, that is, by pulses of compressed air flowing in the opposite to the exhaust direction. The fact that the filtration system is kept at moderate temperatures, at all times, promotes the condensation of volatile hydrocarbons on the soot. Results obtained from extensive road-testing of various configurations of such systems show that (a) soot filtration efficiencies of over 99% can be achieved, (b) volatile hydrocarbon reductions of over 50% are feasible by condensation and (c) 50% reduction of NO{sub x} can be obtained with 20% EGR. Additional benefits include capture of ash and sulfates. To accommodate engines of different sizes a multi-module system is proposed. The optimum number of filters and the frequency of regeneration varies according to the size of the engine. Upon regeneration, soot is collected in a separate chamber where it is incinerated or it is periodically removed by a vacuum system.

  14. DIESEL AEROSOL SAMPLING IN THE David Kittelson, Jason Johnson, and Winthrop Watts

    E-Print Network [OSTI]

    Minnesota, University of

    chemical composition of diesel particulate matter collected in laboratory and in wind tunnel #12;In OrderDIESEL AEROSOL SAMPLING IN THE ATMOSPHERE David Kittelson, Jason Johnson, and Winthrop Watts Center for Diesel Research University of Minnesota 10th CRC ON-ROAD VEHICLE EMISSIONS WORKSHOP San Diego, California

  15. The process of soot formation in a DI Diesel engine is very challenging to understand and

    E-Print Network [OSTI]

    Sandoghdar, Vahid

    Background The process of soot formation in a DI Diesel engine is very challenging to understand and describe. But with respect to the demand for much lower particulate emissions (Tab.1) of Diesel engines emissi- ons of a medium duty DI Diesel engine which is certified for the TIER 3 norm should be evaluated

  16. Macrophage-Mediated Endothelial Inflammatory Responses to Airborne Particulates: Impact of

    E-Print Network [OSTI]

    Dutta, Prabir K.

    of Particulate Physicochemical Properties Robert Kristovich, Deborah A. Knight, John F. Long,§ Marshall V, specific pathogenic mechanisms and the etiological significance of particle physicochemical properties-Fe/F-Al-Si). We have used these particulates, as well as coal fly ash (CFA) and diesel exhaust particulates (DEP

  17. Development and Applications of Catalyzed Diesel Particulate...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    A Revealing Look Inside Passive and Active DPF Regeneration: In-Situ Optical Analysis of Ash Formation and Transport Controlled Experiments on the Effects of LubricantAdditive...

  18. Impacts of Biodiesel Fuel Blends Oil Dilution on Light-Duty Diesel Engine Operation

    SciTech Connect (OSTI)

    Thornton, M. J.; Alleman, T. L.; Luecke, J.; McCormick, R. L.

    2009-08-01

    Assesses oil dilution impacts on a diesel engine operating with a diesel particle filter, NOx storage, a selective catalytic reduction emission control system, and a soy-based 20% biodiesel fuel blend.

  19. Advanced particulate matter control apparatus and methods

    DOE Patents [OSTI]

    Miller, Stanley J. (Grand Forks, ND); Zhuang, Ye (Grand Forks, ND); Almlie, Jay C. (East Grand Forks, MN)

    2012-01-10

    Apparatus and methods for collection and removal of particulate matter, including fine particulate matter, from a gas stream, comprising a unique combination of high collection efficiency and ultralow pressure drop across the filter. The apparatus and method utilize simultaneous electrostatic precipitation and membrane filtration of a particular pore size, wherein electrostatic collection and filtration occur on the same surface.

  20. Evaluation of beta partical densitometry for determination of self-absorption factors in gross alpha and gross beta radioactivity measurements on air particulate filter samples 

    E-Print Network [OSTI]

    Breida, Margaret A

    1994-01-01

    Alpha and beta particles emitted from radioactive material collected on an air filter may be significantly attenuated by the mass (thickness) of collected dust. In this study, we determined the mass or thickness of the simulated dust deposit...

  1. A rigid porous filter and filtration method

    SciTech Connect (OSTI)

    Chiang, Ta-Kuan; Straub, Douglas, Straub L.; Dennis, Richard A.

    1998-12-01

    The present invention involves a porous rigid filter comprising a plurality of concentric filtration elements having internal flow passages and forming external flow passages there between. The present invention also involves a pressure vessel containing the filter for the removal of particulate from high pressure particulate containing gases, and further involves a method for using the filter to remove such particulate. The present filter has the advantage of requiring fewer filter elements due to the high surface area- to-volume ratio provided by the filter, requires a reduced pressure vessel size, and exhibits enhanced mechanical design properties, improved cleaning properties, configuration options, modularity and ease of fabrication.

  2. CNG and Diesel Transit Bus Emissions in Review

    SciTech Connect (OSTI)

    Ayala, A. (a); Kado, N. (a,b); Okamoto, R. (a); Gebel, M. (a) Rieger, P. (a); Kobayashi, R. (b); Kuzmicky, P. (b)

    2003-08-24

    Over the past three years, the California Air Resources Board (CARB), in collaboration with the University of California and other entities, has investigated the tailpipe emissions from three different latemodel, in-use heavy-duty transit buses in five different configurations. The study has focused on the measurement of regulated emissions (NOX, HC, CO, total PM), other gaseous emissions (CO2, NO2, CH4, NMHC), a number of pollutants of toxic risk significance (aromatics, carbonyls, PAHs, elements), composition (elemental and organic carbon), and the physical characterization (size-segregated number count and mass) of the particles in the exhaust aerosol. Emission samples are also tested in a modified Ames assay. The impact of oxidation catalyst control for both diesel and compressed natural gas (CNG) buses and a passive diesel particulate filter (DPF) were evaluated over multiple driving cycles (idle, 55 mph cruise, CBD, UDDS, NYBC) using a chassis dynamometer. For brevity, only CBD results are discussed in this paper and particle sizing results are omitted. The database of results is large and some findings have been reported already at various forums including last year's DEER conference. The goal of this paper is to offer an overview of the lessons learned and attempt to draw overall conclusions and interpretations based on key findings to date.

  3. Cross-flow, filter-sorbent catalyst for particulate, SO{sub 2} and NO{sub x} control. Seventh quarterly technical progress report

    SciTech Connect (OSTI)

    Benedek, K. [Little (Arthur D.), Inc., Cambridge, MA (United States); Flytzani-Stephanopoulos, M. [Massachusetts Inst. of Tech., Cambridge, MA (United States)

    1992-01-01

    This report describes work performed on a new concept for integrated pollutant control: a cross-flow filter comprised of layered, gas permeable membranes that act as a particle filter, an SO {sub 2} sorbent, and a NO {sub x} reduction catalyst. One critical element of the R&D program is the development of mixed metal oxide materials that serve as combined SO {sub 2} sorbents and NO {sub x} reduction catalysts. In this seventh quarterly progress report, we summarize the performance characteristics of three promising sorbent/catalyst materials tested in powder form.

  4. Contactor/filter improvements

    DOE Patents [OSTI]

    Stelman, D.

    1988-06-30

    A contactor/filter arrangement for removing particulate contaminants from a gaseous stream is described. The filter includes a housing having a substantially vertically oriented granular material retention member with upstream and downstream faces, a substantially vertically oriented microporous gas filter element, wherein the retention member and the filter element are spaced apart to provide a zone for the passage of granular material therethrough. A gaseous stream containing particulate contaminants passes through the gas inlet means as well as through the upstream face of the granular material retention member, passing through the retention member, the body of granular material, the microporous gas filter element, exiting out of the gas outlet means. A cover screen isolates the filter element from contact with the moving granular bed. In one embodiment, the granular material is comprised of porous alumina impregnated with CuO, with the cover screen cleaned by the action of the moving granular material as well as by backflow pressure pulses. 6 figs.

  5. Transportation Refrigeration Unit (TRU) Retrofit with HUSS Active...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Transportation Refrigeration Unit (TRU) Retrofit with HUSS Active Diesel Particulate Filters Transportation Refrigeration Unit (TRU) Retrofit with HUSS Active Diesel Particulate...

  6. SCR-DPF Integrations for Diesel ExhaustPerformance and Perspectives...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    and Perspectives for High SCR Loadings Presents laboratory and engine bench test results from integrating the SCR catalyst into the diesel filter as one multifunctional...

  7. Development of Diesel Exhaust Aftertreatment System for Tier II Emissions

    SciTech Connect (OSTI)

    Yu, R. C.; Cole, A. S., Stroia, B. J.; Huang, S. C. (Cummins, Inc.); Howden, Kenneth C.; Chalk, Steven (U.S. Dept. of Energy)

    2002-06-01

    Due to their excellent fuel efficiency, reliability, and durability, compression ignition direct injection (CIDI) engines have been used extensively to power almost all highway trucks, urban buses, off-road vehicles, marine carriers, and industrial equipment. CIDI engines burn 35 to 50% less fuel than gasoline engines of comparable size, and they emit far less greenhouse gases (Carbon Dioxides), which have been implicated in global warming. Although the emissions of CIDI engines have been reduced significantly over the last decade, there remains concern with the Nitrogen Oxides (NOX) and Particulate Matter (PM) emission levels. In 2000, the US EPA proposed very stringent emissions standards to be introduced in 2007 along with low sulfur (< 15ppm) diesel fuel. The California Air Resource Board (CARB) has also established the principle that future diesel fueled vehicles should meet the same emissions standards as gasoline fueled vehicles and the EPA followed suit with its Tier II emissions regulations. Meeting the Tier II standards requires NOX and PM emissions to be reduced dramatically. Achieving such low emissions while minimizing fuel economy penalty cannot be done through engine development and fuel reformulation alone, and requires application of NOX and PM aftertreatment control devices. A joint effort was made between Cummins Inc. and the Department of Energy to develop the generic aftertreatment subsystem technologies applicable for Light-Duty Vehicle (LDV) and Light-Duty Truck (LDT) engines. This paper provides an update on the progress of this joint development program. Three NOX reduction technologies including plasmaassisted catalytic NOX reduction (PACR), active lean NOX catalyst (LNC), and adsorber catalyst (AC) technology using intermittent rich conditions for NOX reduction were investigated in parallel in an attempt to select the best NOX control approach for light-duty aftertreatment subsystem integration and development. Investigations included system design and analysis, critical lab/engine experiments, and ranking then selection of NOX control technologies against reliability, up-front cost, fuel economy, service interval/serviceability, and size/weight. The results of the investigations indicate that the best NOX control approach for LDV and LDT applications is a NOX adsorber system. A greater than 83% NOX reduction efficiency is required to achieve 0.07g/mile NOX Tier II vehicle-out emissions. Both active lean NOX and PACR technology are currently not capable of achieving the high conversion efficiency required for Tier II, Bin 5 emissions standards. In this paper, the NOX technology assessment and selection is first reviewed and discussed. Development of the selected NOX technology (NOX adsorber) and PM control are then discussed in more detail. Discussion includes exhaust sulfur management, further adsorber formulation development, reductant screening, diesel particulate filter development & active regeneration, and preliminary test results on the selected integrated SOX trap, NOX adsorber, and diesel particulate filter system over an FTP-75 emissions cycle, and its impact on fuel economy. Finally, the direction of future work for continued advanced aftertreatment technology development is discussed. (SAE Paper SAE-2002-01-1867 © 2002 SAE International. This paper is published on this website with permission from SAE International. As a user of this website, you are permitted to view this paper on-line, download this pdf file and print one copy of this paper at no cost for your use only. The downloaded pdf file and printout of this SAE paper may not be copied, distributed or forwarded to others or for the use of others.)

  8. Progress in diesel engine emissions control

    SciTech Connect (OSTI)

    Khair, M.K. (Southwest Research Inst., San Antonio, TX (United States))

    1992-07-01

    A considerable amount of work was carried out in the mid-1980s to develop heavy-duty diesel engines that could meet limits on particulate emissions. These limits, although high by today's standards, were considered very restrictive. Some manufacturers struggled to achieve the 0.6 g/bhp-h particulate matter limit with enough margin for production variabilities and to account for the deterioration factor. Significant progress was achieved in diesel emissions control through engine and fuel system design changes. This eventually made it possible to meet a particulate level of 0.25 g/bhp-h for 1991. The next target level for particulate emissions is 0.1 g/bhp-h for the 1994 heavy-duty engine. To meet the challenge, engine developers are not only considering engine and injection system design changes but also fuel improvements and exhaust aftertreatment. This paper includes a review of past and current strategies used to control emissions in the modern diesel engine.

  9. Individual and synergistic effects of lubricant additive (Ca, Mg, Zn) combinations on ash characteristics and DPF performance

    E-Print Network [OSTI]

    Chiou, Casey (Casey Jianzhi)

    2013-01-01

    Diesel particulate filters (DPF) are devices that trap hazardous particulate matter from diesel engine exhaust in order to meet increasingly strict particle emissions regulations. Diesel exhaust particulates mainly include ...

  10. How does pulmonary exposure to particulate matter predispose the heart to increased injury after myocardial infarction? 

    E-Print Network [OSTI]

    Robertson, Sarah

    2013-07-06

    One of the most prevalent pollutants in urban cities is diesel exhaust particulate (DEP). Air pollution has been linked with increased risk of recurrent myocardial infarction (MI) and MI related death (Brook, 2008). This ...

  11. Emission control options for mine diesels

    SciTech Connect (OSTI)

    Waytulonis, R.W. (Bureau of Mines, Twin Cities, MN (USA). Twin Cities Research Center)

    1991-03-01

    New exhaust control techniques and devices may be necessary to meet future diesel particulate matter emission standards in underground coal mines. This paper reviews conventional work practices and devices used to control diesel exhaust emissions, and new techniques being tested by the US Bureau of Mines. Discussions center on important work practices and on the function and efficiency of exhaust aftertreatment devices. An industry-government cooperative research project to develop and test an exhaust aftertreatment system for part 36 equipment is also discussed.

  12. Diesel engine combustion and emissions from fuel to exhaust aftertreatment. SP-1113

    SciTech Connect (OSTI)

    NONE

    1995-12-31

    There are many dimensions involved in any study of Diesel Engine Emissions. These dimensions include: the fuel used, how the fuel is presented into the combustion chamber, how the air is presented into the combustion chamber, the actual process of combustion and emissions formation, the treatment of the emissions after combustion, and the test methods used to quantify the emissions. All of these dimensions are covered in this publication. The fuel topics include: plant oil based fuels and gas dissolved in fuel oil. The air delivery to the combustion chamber is effected by both port performance and geometry and ambient conditions and these topics are included. The thermodynamics of the combustion process and modeling are included in this publication. Aftertreatment is included with a paper on particulate filters. A correlation study using the ISO8178 testing method is also included. All nine papers have been processed separately for inclusion on the database.

  13. Mass Flow Estimation with Model Bias Correction for a Turbocharged Diesel Engine

    E-Print Network [OSTI]

    Johansen, Tor Arne

    Mass Flow Estimation with Model Bias Correction for a Turbocharged Diesel Engine Tomás Polóni. Based on an augmented observable Mean Value En- gine Model (MVEM) of a turbocharged Diesel engine in the intake duct. Keywords: Diesel engine, Mass flow estimation, Bias estimation, Kalman filtering, Mean value

  14. Advanced Petroleum-Based fuels - Diesel Emissions Control (APBF...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Status of APBF-DEC NOx AdsorberDPF Projects Full Useful Life (120,000 miles) Exhaust Emission Performance of a NOx Adsorber and Diesel Particle Filter Equipped Passenger Car...

  15. Experimental Studies for CPF and SCR Model, Control System, and OBD Development for Engines Using Diesel and Biodiesel Fuels

    SciTech Connect (OSTI)

    Johnson, John; Naber, Jeffrey; Parker, Gordon; Yang, Song-Lin; Stevens, Andrews; Pihl, Josh

    2013-04-30

    The research carried out on this project developed experimentally validated Diesel Oxidation Catalyst (DOC), Diesel Particulate Filter (DPF), and Selective Catalytic Reduction (SCR) high?fidelity models that served as the basis for the reduced order models used for internal state estimation. The high?fidelity and reduced order/estimator codes were evaluated by the industrial partners with feedback to MTU that improved the codes. Ammonia, particulate matter (PM) mass retained, PM concentration, and NOX sensors were evaluated and used in conjunction with the estimator codes. The data collected from PM experiments were used to develop the PM kinetics using the high?fidelity DPF code for both NO2 assisted oxidation and thermal oxidation for Ultra Low Sulfur Fuel (ULSF), and B10 and B20 biodiesel fuels. Nine SAE papers were presented and this technology transfer process should provide the basis for industry to improve the OBD and control of urea injection and fuel injection for active regeneration of the PM in the DPF using the computational techniques developed. This knowledge will provide industry the ability to reduce the emissions and fuel consumption from vehicles in the field. Four MS and three PhD Mechanical Engineering students were supported on this project and their thesis research provided them with expertise in experimental, modeling, and controls in aftertreatment systems.

  16. Method and apparatus for filtering gas with a moving granular filter bed

    DOE Patents [OSTI]

    Brown, Robert C. (Ames, IA); Wistrom, Corey (Ames, IA); Smeenk, Jerod L. (Ames, IA)

    2007-12-18

    A method and apparatus for filtering gas (58) with a moving granular filter bed (48) involves moving a mass of particulate filter material (48) downwardly through a filter compartment (35); tangentially introducing gas into the compartment (54) to move in a cyclonic path downwardly around the moving filter material (48); diverting the cyclonic path (58) to a vertical path (62) to cause the gas to directly interface with the particulate filter material (48); thence causing the gas to move upwardly through the filter material (48) through a screened partition (24, 32) into a static upper compartment (22) of a filter compartment for exodus (56) of the gas which has passed through the particulate filter material (48).

  17. Educating Consumers: New Content on Diesel Vehicles, Diesel Exhaust...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Educating Consumers: New Content on Diesel Vehicles, Diesel Exhaust Fluid, and Selective Catalytic Reduction Technologies on the AFDC Educating Consumers: New Content on Diesel...

  18. Diesel Emission Control Review

    Broader source: Energy.gov [DOE]

    Reviews regulatory requirements and technology approaches for diesel emission control for heavy and light duty applications

  19. Anti-clogging filter system

    DOE Patents [OSTI]

    Brown, Erik P.

    2015-05-19

    An anti-clogging filter system for filtering a fluid containing large particles and small particles includes an enclosure with at least one individual elongated tubular filter element in the enclosure. The individual elongated tubular filter element has an internal passage, a closed end, an open end, and a filtering material in or on the individual elongated tubular filter element. The fluid travels through the open end of the elongated tubular element and through the internal passage and through the filtering material. An anti-clogging element is positioned on or adjacent the individual elongated tubular filter element and provides a fluid curtain that preferentially directs the larger particulates to one area of the filter material allowing the remainder of the filter material to remain more efficient.

  20. Contactor/filter improvements

    DOE Patents [OSTI]

    Stelman, David (West Hills, CA)

    1989-01-01

    A contactor/filter arrangement for removing particulate contaminants from a gaseous stream includes a housing having a substantially vertically oriented granular material retention member with upstream and downstream faces, a substantially vertically oriented microporous gas filter element, wherein the retention member and the filter element are spaced apart to provide a zone for the passage of granular material therethrough. The housing further includes a gas inlet means, a gas outlet means, and means for moving a body of granular material through the zone. A gaseous stream containing particulate contaminants passes through the gas inlet means as well as through the upstream face of the granular material retention member, passing through the retention member, the body of granular material, the microporous gas filter element, exiting out of the gas outlet means. Disposed on the upstream face of the filter element is a cover screen which isolates the filter element from contact with the moving granular bed and collects a portion of the particulates so as to form a dust cake having openings small enough to exclude the granular material, yet large enough to receive the dust particles. In one embodiment, the granular material is comprised of prous alumina impregnated with CuO, with the cover screen cleaned by the action of the moving granular material as well as by backflow pressure pulses.

  1. Clean Diesel: Overcoming Noxious Fumes

    E-Print Network [OSTI]

    Brodrick, Christie-Joy; Sperling, Daniel; Dwyer, Harry A.

    2001-01-01

    emissions and by low diesel-fuel prices, relatively gentleand the absence of diesel fuel price terize and measureattraction where diesel fuel prices are lower than gasoline

  2. Method and apparatus for a self-cleaning filter

    DOE Patents [OSTI]

    Diebold, James P. (Lakewood, CO); Lilley, Arthur (Finleyville, PA); Browne, III, Kingsbury (Golden, CO); Walt, Robb Ray (Aurora, CO); Duncan, Dustin (Littleton, CO); Walker, Michael (Longmont, CO); Steele, John (Aurora, CO); Fields, Michael (Arvada, CO)

    2010-11-16

    A method and apparatus for removing fine particulate matter from a fluid stream without interrupting the overall process or flow. The flowing fluid inflates and expands the flexible filter, and particulate is deposited on the filter media while clean fluid is permitted to pass through the filter. This filter is cleaned when the fluid flow is stopped, the filter collapses, and a force is applied to distort the flexible filter media to dislodge the built-up filter cake. The dislodged filter cake falls to a location that allows undisrupted flow of the fluid after flow is restored. The shed particulate is removed to a bin for periodic collection. A plurality of filter cells can operate independently or in concert, in parallel, or in series to permit cleaning the filters without shutting off the overall fluid flow. The self-cleaning filter is low cost, has low power consumption, and exhibits low differential pressures.

  3. Comparing the Performance of SunDiesel and Conventional Diesel...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    the Performance of SunDiesel and Conventional Diesel in a Light-Duty Vehicle and Engines Comparing the Performance of SunDiesel and Conventional Diesel in a Light-Duty Vehicle and...

  4. Apparatus for real-time airborne particulate radionuclide collection and analysis

    DOE Patents [OSTI]

    Smart, John E. (West Richland, WA); Perkins, Richard W. (Richland, WA)

    2001-01-01

    An improved apparatus for collecting and analyzing an airborne particulate radionuclide having a filter mounted in a housing, the housing having an air inlet upstream of the filter and an air outlet downstream of the filter, wherein an air stream flows therethrough. The air inlet receives the air stream, the filter collects the airborne particulate radionuclide and permits a filtered air stream to pass through the air outlet. The improvement which permits real time counting is a gamma detecting germanium diode mounted downstream of the filter in the filtered air stream. The gamma detecting germanium diode is spaced apart from a downstream side of the filter a minimum distance for a substantially maximum counting detection while permitting substantially free air flow through the filter and uniform particulate radionuclide deposition on the filter.

  5. Novel Collection and Toxicological Analysis Techniques for IC Engine Exhaust Particulate Matter

    SciTech Connect (OSTI)

    Michael Keane; Xiao-Chun Shi; Tong-man Ong

    2008-09-30

    The project staff partnered with Costas Sioutas from the University of Southern California to apply the VACES (Versatile Aerosol Concentration Enhancement System) to a diesel engine test facility at West Virginia University Department of Mechanical Engineering and later the NIOSH Lake Lynn Mine facility. The VACES system was able to allow diesel exhaust particulate matter (DPM) to grow to sufficient particle size to be efficiently collected with the SKC Biosampler impinger device, directly into a suspension of simulated pulmonary surfactant. At the WVU-MAE facility, the concentration of the aerosol was too high to allow efficient use of the VACES concentration enhancement, although aerosol collection was successful. Collection at the LLL was excellent with the diluted exhaust stream. In excess of 50 samples were collected at the LLL facility, along with matching filter samples, at multiple engine speed and load conditions. Replicate samples were combined and concentration increased using a centrifugal concentrator. Bioassays were negative for all tested samples, but this is believed to be due to insufficient concentration in the final assay suspensions.

  6. Performance Characteristics of Coal-to-Liquids (CTL) Diesel in a 50-State Emissions Compliant Passenger Car

    Office of Energy Efficiency and Renewable Energy (EERE)

    Comparisons between CTL, GTL, no. 2, and European diesel include fuel economy, regulated and unregulated emissions in a 50 State compliant passenger car with DOC, NOx adsorber and particulate trap

  7. Aftertreatment Technologies for Off-Highway Heavy-Duty Diesel Engines

    SciTech Connect (OSTI)

    Kass, M.D.

    2008-07-15

    The objective of this program was to explore a combination of advanced injection control and urea-selective catalytic reduction (SCR) to reduce the emissions of oxides of nitrogen (NOx) and particulate matter (PM) from a Tier 2 off-highway diesel engine to Tier 3 emission targets while maintaining fuel efficiency. The engine used in this investigation was a 2004 4.5L John Deere PowerTechTM; this engine was not equipped with exhaust gas recirculation (EGR). Under the original CRADA, the principal objective was to assess whether Tier 3 PM emission targets could be met solely by increasing the rail pressure. Although high rail pressure will lower the total PM emissions, it has a contrary effect to raise NOx emissions. To address this effect, a urea-SCR system was used to determine whether the enhanced NOx levels, associated with high rail pressure, could be reduced to Tier 3 levels. A key attraction for this approach is that it eliminates the need for a Diesel particulate filter (DPF) to remove PM emissions. The original CRADA effort was also performed using No.2 Diesel fuel having a maximum sulfur level of 500 ppm. After a few years, the CRADA scope was expanded to include exploration of advanced injection strategies to improve catalyst regeneration and to explore the influence of urea-SCR on PM formation. During this period the emission targets also shifted to meeting more stringent Tier 4 emissions for NOx and PM, and the fuel type was changed to ultra-low sulfur Diesel (ULSD) having a maximum sulfur concentration of 15 ppm. New discoveries were made regarding PM formation at high rail pressures and the influences of oxidation catalysts and urea-SCR catalysts. These results are expected to provide a pathway for lower PM and NOx emissions for both off- and on-highway applications. Industrial in-kind support was available throughout the project period. Review of the research results were carried out on a regular basis (annual reports and meetings) followed by suggestions for improvement in ongoing work and direction for future work. A significant portion of the industrial support was in the form of experimentation, data analysis, data exchange, and technical consultation.

  8. Filter assembly for metallic and intermetallic tube filters

    DOE Patents [OSTI]

    Alvin, Mary Anne (113 Lehr Ave., Pittsburgh, PA 15223); Lippert, Thomas E. (3205 Cambridge Rd., Murrysville, PA 15668); Bruck, Gerald J. (4469 Sardis Rd., Murrysville, PA 15668); Smeltzer, Eugene E. (R.D. 7, Box 267-I, Italy Rd., Export, PA 15632-9621)

    2001-01-01

    A filter assembly (60) for holding a filter element (28) within a hot gas cleanup system pressure vessel is provided, containing: a filter housing (62), said filter housing having a certain axial length and having a peripheral sidewall, said sidewall defining an interior chamber (66); a one piece, all metal, fail-safe/regenerator device (68) within the interior chamber (66) of the filter housing (62) and/or extending beyond the axial length of the filter housing, said device containing an outward extending radial flange (71) within the filter housing for seating an essential seal (70), the device also having heat transfer media (72) disposed inside and screens (80) for particulate removal; one compliant gasket (70) positioned next to and above the outward extending radial flange of the fail-safe/regenerator device; and a porous metallic corrosion resistant superalloy type filter element body welded at the bottom of the metal fail-safe/regenerator device.

  9. Sub-micron filter

    DOE Patents [OSTI]

    Tepper, Frederick (Sanford, FL); Kaledin, Leonid (Port Orange, FL)

    2009-10-13

    Aluminum hydroxide fibers approximately 2 nanometers in diameter and with surface areas ranging from 200 to 650 m.sup.2/g have been found to be highly electropositive. When dispersed in water they are able to attach to and retain electronegative particles. When combined into a composite filter with other fibers or particles they can filter bacteria and nano size particulates such as viruses and colloidal particles at high flux through the filter. Such filters can be used for purification and sterilization of water, biological, medical and pharmaceutical fluids, and as a collector/concentrator for detection and assay of microbes and viruses. The alumina fibers are also capable of filtering sub-micron inorganic and metallic particles to produce ultra pure water. The fibers are suitable as a substrate for growth of cells. Macromolecules such as proteins may be separated from each other based on their electronegative charges.

  10. Sintered composite filter

    DOE Patents [OSTI]

    Bergman, W.

    1986-05-02

    A particulate filter medium formed of a sintered composite of 0.5 micron diameter quartz fibers and 2 micron diameter stainless steel fibers is described. Preferred composition is about 40 vol.% quartz and about 60 vol.% stainless steel fibers. The media is sintered at about 1100/sup 0/C to bond the stainless steel fibers into a cage network which holds the quartz fibers. High filter efficiency and low flow resistance are provided by the smaller quartz fibers. High strength is provided by the stainless steel fibers. The resulting media has a high efficiency and low pressure drop similar to the standard HEPA media, with tensile strength at least four times greater, and a maximum operating temperature of about 550/sup 0/C. The invention also includes methods to form the composite media and a HEPA filter utilizing the composite media. The filter media can be used to filter particles in both liquids and gases.

  11. Advanced hybrid particulate collector and method of operation

    DOE Patents [OSTI]

    Miller, S.J.

    1999-08-17

    A device and method for controlling particulate air pollutants of the present invention combines filtration and electrostatic collection devices. The invention includes a chamber housing a plurality of rows of filter elements. Between each row of filter elements is a grounded plate. Between the grounded plates and the filter elements are electrode grids for creating electrostatic precipitation zones between each row of filter elements. In this way, when the filter elements are cleaned by pulsing air in a reverse direction, the dust removed from the bags will collect in the electrostatic precipitation zones rather than on adjacent filter elements. 12 figs.

  12. Advanced hybrid particulate collector and method of operation

    DOE Patents [OSTI]

    Miller, Stanley J. (Grand Forks, ND)

    1999-01-01

    A device and method for controlling particulate air pollutants of the present invention combines filtration and electrostatic collection devices. The invention includes a chamber housing a plurality of rows of filter elements. Between each row of filter elements is a grounded plate. Between the grounded plates and the filter elements are electrode grids for creating electrostatic precipitation zones between each row of filter elements. In this way, when the filter elements are cleaned by pulsing air in a reverse direction, the dust removed from the bags will collect in the electrostatic precipitation zones rather than on adjacent filter elements.

  13. Ceramic Particulate Filters | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR...

  14. An Optical Backscatter Sensor for Particulate Matter Measurement

    SciTech Connect (OSTI)

    Parks, II, James E [ORNL; Prikhodko, Vitaly Y [ORNL; Partridge Jr, William P [ORNL

    2009-01-01

    Diesel engines are prone to emit particulate matter (PM) emissions under certain operation conditions. In-cylinder production of PM from diesel combustion control can occur under a wide variety of operating conditions, and in some cases, operation of a multi-cylinder engine can further complicate PM emissions due to variations in air or fuel charge due to manifold mixing effects. In this study, a probe for detecting PM in diesel exhaust was evaluated on a light-duty diesel engine. The probe is based on an optical backscattering effect. Due to the optical nature of the probe, PM sensing can occur at high rates. The feasibility of the probe for examining PM emissions in the exhaust manifold will be discussed.

  15. Diesel prices increase

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural GasNatural Gas Usage FormDieselDieselDieselDieselDiesel

  16. Join Diesel: Concurrency Primitives for Diesel Peter-Michael Osera

    E-Print Network [OSTI]

    Plotkin, Joshua B.

    Join Diesel: Concurrency Primitives for Diesel Peter-Michael Osera psosera to the Diesel programming language, entitled Join Diesel. We describe the design decisions and trade-offs made in integrating these concurrency primitives into the Diesel language. We also give a typechecking algorithm

  17. Regulation of Emissions from Stationary Diesel Engines (released in AEO2007)

    Reports and Publications (EIA)

    2007-01-01

    On July 11, 2006, the Environmental Protection Agency (EPA) issued regulations covering emissions from stationary diesel engines New Source Performance Standards that limit emissions of NOx, particulate matter, SO2, carbon monoxide, and hydrocarbons to the same levels required for nonroad diesel engines. The regulation affects new, modified, and reconstructed diesel engines. Beginning with model year 2007, engine manufacturers must specify that new engines less than 3,000 horsepower meet the same emissions standard as nonroad diesel engines. For engines greater than 3,000 horsepower, the standard will be fully effective in 2011. Stationary diesel engine fuel will also be subject to the same standard as nonroad diesel engine fuel, which reduces the sulfur content of the fuel to 500 parts per million by mid-2007 and 15 parts per million by mid-2010.

  18. PARTICULATE DEPOSITION OF MAGNETITE

    E-Print Network [OSTI]

    Gudmundsson, Jon Steinar

    PART V PARTICULATE DEPOSITION OF MAGNETITE #12;- 75 - PART V - DEPOSITION OF PARTICULATE MAGNETITE conduits and equipment in conventional boilers and nuclear reactors, the particulate corrosion products tend to deposit at heated and unheated surfaces. The deposition affects the thermohydraulic performance

  19. Advanced hybrid particulate collector and method of operation

    DOE Patents [OSTI]

    Miller, Stanley J. (Grand Forks, ND)

    2003-04-08

    A device and method for controlling particulate air pollutants of the present invention combines filtration and electrostatic collection devices. The invention includes a chamber housing a plurality of rows of filter elements. Between the rows of filter elements are rows of high voltage discharge electrodes. Between the rows of discharge electrodes and the rows of filter elements are grounded perforated plates for creating electrostatic precipitation zones.

  20. Evaluation of HEPA filter service life

    SciTech Connect (OSTI)

    Fretthold, J.K.; Stithem, A.R.

    1997-07-14

    Rocky Flats Environmental Technology Site (RFETS), has approximately 10,000 High Efficiency Particulate Air (HEPA) Filters installed in a variety of filter plenums. These ventilation/filtration plenum systems are used to control the release of airborne particulate contaminates to the environment during normal operations and potential accidents. This report summarizes the results of destructive and non-destructive tests on HEPA filters obtained from a wide variety of ages and service conditions. These tests were performed to determine an acceptable service life criteria for HEPA filters used at Rocky Flats Environmental Technology Site (RFETS). A total of 140 filters of various ages (1972 to 1996) and service history (new, aged unused, used) were tested. For the purpose of this report, filter age from manufacture date/initial test date to the current sample date was used, as opposed to the actual time a filter was installed in an operating system.

  1. Application of Non-Thermal Plasma Assisted Catalyst Technology for Diesel Engine Emission Reduction

    SciTech Connect (OSTI)

    Herling, Darrell R.; Smith, Monty R.; Baskaran, Suresh; Kupe, J.

    2000-12-31

    This paper presents an overview of a non-thermal plasma assisted catalyst system as applied to a small displacement diesel powered vehicle. In addition to effectively reducing NOx emissions, it has been found that a non-thermal plasma can also destroy a portion of the particulate matter (PM) that is emitted from diesel engines. Delphi Automotive Systems in conjunction with Pacific Northwest National Laboratories has been developing such an exhaust aftertreatment system to reduce emissions form diesel vehicles. The results of testing and system evaluation will be discussed in general, and the effectiveness on reducing oxides of nitrogen and particulate matter emissions from diesel vehicles. Published in Future Engines-SP1559, SAW, Warrendale, PA

  2. Non-Destructive X-ray Measurement of Soot, Ash, Washcoat and Regeneration Damage for DPFs

    Broader source: Energy.gov [DOE]

    New commercially avaliable non-destructive x-ray techniques are used to make measurements on diesel particulate filters.

  3. Clean Diesel: Overcoming Noxious Fumes

    E-Print Network [OSTI]

    Brodrick, Christie-Joy; Sperling, Daniel; Dwyer, Harry A.

    2001-01-01

    Clean Diesel: Overcoming NoxiousFumes Are diesel engines part of the problem or part of theS T H E T R U T H about diesel engines? Are they inherently

  4. Low emissions diesel fuel

    DOE Patents [OSTI]

    Compere, Alicia L. (Knoxville, TN); Griffith, William L. (Oak Ridge, TN); Dorsey, George F. (Farragut, TN); West, Brian H. (Kingston, TN)

    1998-01-01

    A method and matter of composition for controlling NO.sub.x emissions from existing diesel engines. The method is achieved by adding a small amount of material to the diesel fuel to decrease the amount of NO.sub.x produced during combustion. Specifically, small amounts, less than about 1%, of urea or a triazine compound (methylol melamines) are added to diesel fuel. Because urea and triazine compounds are generally insoluble in diesel fuel, microemulsion technology is used to suspend or dissolve the urea or triazine compound in the diesel fuel. A typical fuel formulation includes 5% t-butyl alcohol, 4.5% water, 0.5% urea or triazine compound, 9% oleic acid, and 1% ethanolamine. The subject invention provides improved emissions in heavy diesel engines without the need for major modifications.

  5. Low emissions diesel fuel

    DOE Patents [OSTI]

    Compere, A.L.; Griffith, W.L.; Dorsey, G.F.; West, B.H.

    1998-05-05

    A method and matter of composition for controlling NO{sub x} emissions from existing diesel engines. The method is achieved by adding a small amount of material to the diesel fuel to decrease the amount of NO{sub x} produced during combustion. Specifically, small amounts, less than about 1%, of urea or a triazine compound (methylol melamines) are added to diesel fuel. Because urea and triazine compounds are generally insoluble in diesel fuel, microemulsion technology is used to suspend or dissolve the urea or triazine compound in the diesel fuel. A typical fuel formulation includes 5% t-butyl alcohol, 4.5% water, 0.5% urea or triazine compound, 9% oleic acid, and 1% ethanolamine. The subject invention provides improved emissions in heavy diesel engines without the need for major modifications.

  6. US Energy Secretary Chu Announces $24 Million Loan for Tenneco...

    Office of Environmental Management (EM)

    2014 will be equipped with Tenneco's emission control technology. The components include catalytic converters, diesel particulate filters, diesel oxidation catalysts and selective...

  7. Development and Field Demonstrations of the Low NO2 ACCRT? System...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Documents & Publications Diesel Particulate Filter Technology for Low-Temperature and Low-NOxPM Applications Update on Diesel Exhaust Emission Control Technology and Regulations...

  8. Impact of Biodiesel-Based Na on the Selective Catalytic Reduction (SCR) of NOx Using Cu-zeolite

    Broader source: Energy.gov [DOE]

    Discusses the impact of Na in biodiesel on three emission control devices: the diesel particulate filter, diesel oxidation catalyst, and zeolyte-based SCR catalyst

  9. Diesel prices decrease

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural GasNatural Gas Usage FormDiesel pricesDieselDieselDiesel

  10. Diesel prices flat nationally

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural GasNatural Gas Usage FormDieselDieselDieselDiesel prices

  11. Diesel prices increase

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural GasNatural Gas Usage FormDieselDieselDieselDiesel

  12. Diesel prices slightly increase

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural GasNatural Gas UsageDiesel prices increaseDieselDieselDiesel

  13. Quick-change filter cartridge

    DOE Patents [OSTI]

    Rodgers, John C. (Santa Fe, NM); McFarland, Andrew R. (College Station, TX); Ortiz, Carlos A. (Bryan, TX)

    1995-01-01

    A quick-change filter cartridge. In sampling systems for measurement of airborne materials, a filter element is introduced into the sampled airstream such that the aerosol constituents are removed and deposited on the filter. Fragile sampling media often require support in order to prevent rupture during sampling, and careful mounting and sealing to prevent misalignment, tearing, or creasing which would allow the sampled air to bypass the filter. Additionally, handling of filter elements may introduce cross-contamination or exposure of operators to toxic materials. Moreover, it is desirable to enable the preloading of filter media into quick-change cartridges in clean laboratory environments, thereby simplifying and expediting the filter-changing process in the field. The quick-change filter cartridge of the present invention permits the application of a variety of filter media in many types of instruments and may also be used in automated systems. The cartridge includes a base through which a vacuum can be applied to draw air through the filter medium which is located on a porous filter support and held there by means of a cap which forms an airtight seal with the base. The base is also adapted for receiving absorbing media so that both particulates and gas-phase samples may be trapped for investigation, the latter downstream of the aerosol filter.

  14. Ceramic fiber reinforced filter

    DOE Patents [OSTI]

    Stinton, David P. (Knoxville, TN); McLaughlin, Jerry C. (Oak Ridge, TN); Lowden, Richard A. (Powell, TN)

    1991-01-01

    A filter for removing particulate matter from high temperature flowing fluids, and in particular gases, that is reinforced with ceramic fibers. The filter has a ceramic base fiber material in the form of a fabric, felt, paper of the like, with the refractory fibers thereof coated with a thin layer of a protective and bonding refractory applied by chemical vapor deposition techniques. This coating causes each fiber to be physically joined to adjoining fibers so as to prevent movement of the fibers during use and to increase the strength and toughness of the composite filter. Further, the coating can be selected to minimize any reactions between the constituents of the fluids and the fibers. A description is given of the formation of a composite filter using a felt preform of commercial silicon carbide fibers together with the coating of these fibers with pure silicon carbide. Filter efficiency approaching 100% has been demonstrated with these filters. The fiber base material is alternately made from aluminosilicate fibers, zirconia fibers and alumina fibers. Coating with Al.sub.2 O.sub.3 is also described. Advanced configurations for the composite filter are suggested.

  15. Carbon fiber composite molecular sieve electrically regenerable air filter media

    DOE Patents [OSTI]

    Wilson, K.A.; Burchell, T.D.; Judkins, R.R.

    1998-10-27

    An electrically regenerable gas filter system includes a carbon fiber composite molecular sieve (CFCMS) filter medium. After a separate medium-efficiency pre-filter removes particulate from the supply air stream, the CFCMS filter sorbs gaseous air pollutants before the air is recirculated to the space. When saturated, the CFCMS media is regenerated utilizing a low-voltage current that is caused to pass through the filter medium. 3 figs.

  16. Carbon fiber composite molecular sieve electrically regenerable air filter media

    DOE Patents [OSTI]

    Wilson, Kirk A. (Knoxville, TN); Burchell, Timothy D. (Oak Ridge, TN); Judkins, Roddie R. (Knoxville, TN)

    1998-01-01

    An electrically regenerable gas filter system includes a carbon fiber composite molecular sieve (CFCMS) filter medium. After a separate medium-efficiency pre-filter removes particulate from the supply airstream, the CFCMS filter sorbs gaseous air pollutants before the air is recirculated to the space. When saturated, the CFCMS media is regenerated utilizing a low-voltage current that is caused to pass through the filter medium.

  17. Diesel particles -a health hazard 1 Diesel particles

    E-Print Network [OSTI]

    Diesel particles - a health hazard 1 Diesel particles - a health hazard #12;The Danish Ecological Council - August 20042 Diesel particles - a health hazard ISBN: 87-89843-61-4 Text by: Christian Ege 33150777 Fax no.: +45 33150971 E-mail: info@ecocouncil.dk www.ecocouncil.dk #12;Diesel particles - a health

  18. Diesel engine emissions reduction by multiple injections having increasing pressure

    DOE Patents [OSTI]

    Reitz, Rolf D. (Madison, WI); Thiel, Matthew P. (Madison, WI)

    2003-01-01

    Multiple fuel charges are injected into a diesel engine combustion chamber during a combustion cycle, and each charge after the first has successively greater injection pressure (a higher injection rate) than the prior charge. This injection scheme results in reduced emissions, particularly particulate emissions, and can be implemented by modifying existing injection system hardware. Further enhancements in emissions reduction and engine performance can be obtained by using known measures in conjunction with the invention, such as Exhaust Gas Recirculation (EGR).

  19. RETORT WATER PARTICULATES

    E-Print Network [OSTI]

    2011-01-01

    layer of retort water from the filter surface, (3) crystaldeep layer of retort water from the filter surface, from C02distilled water before placing the filter RETORT OPERATING

  20. Emissions from Buses with DDC 6V92 Engines Using Synthetic Diesel Fuel

    SciTech Connect (OSTI)

    Paul Norton; Keith Vertin; Nigel N. Clark; Donald W. Lyons; Mridul Gautam; Stephen Goguen; James Eberhardt

    1999-05-03

    Synthetic diesel fuel can be made from a variety of feedstocks, including coal, natural gas and biomass. Synthetic diesel fuels can have very low sulfur and aromatic content, and excellent autoignition characteristics. Moreover, synthetic diesel fuels may also economically competitive with California diesel fuel if .roduced in large volumes. Previous engine laboratory and field tests using a heavy-duty chassis dynamometer indicate that synthetic diesel fuel made using the Fischer-Tropsch (F-T) catalytic conversion process is a promising alternative fuel, because it can be used in unmodified diesel engines, and can reduce exhaust emissions substantially. The objective of this study was a preliminary assessment of the emissions from older model transit operated on Mossgas synthetic diesel fuel. The study compared emissions from transit buses operating on Federal no. 2 Diesel fuel, Mossgas synthetic diesel (MGSD), and a 50/50 blend of the two fuels. The buses were equipped with unmodified Detroit Diesel 6V92 2-stroke diesel engines. Six 40-foot buses were tested. Three of the buses had recently rebuilt engines and were equipped with an oxidation catalytic converter. Vehicle emissions measurements were performed using West Virginia University's unique transportable chassis dynamometer. The emissions were measured over the Central Business District (CBD) driving cycle. The buses performed well on both neat and blended MGSD fuel. Three buses without catalytic converters were tested. Compared to their emissions when operating on Federal no. 2 diesel fuel, these buses emitted an average of 5% lower oxides of nitrogen (NOx) and 20% lower particulate matter (PM) when operating on neat MGSD fuel. Catalyst equipped buses emitted an average of 8% lower NOx and 31% lower PM when operating on MGSD than when operating on Federal no. 2 diesel fuel.

  1. Diesel combustion: an integrated view combining laser diagnostics, chemical kinetics, and empirical validation

    SciTech Connect (OSTI)

    Akinyami, O C; Dec, J E; Durrett, R P; Flynn, P F; Hunter, G L; Loye, A O; Westbrook, C

    1999-02-01

    This paper proposes a structure for the diesel combustion process based on a combination of previously published and new results. Processes are analyzed with proven chemical kinetic models and validated with data from production-like direct injection diesel engines. The analysis provides new insight into the ignition and particulate formation processes, which combined with laser diagnostics, delineates the two-stage nature of combustion in diesel engines. Data are presented to quantify events occurring during the ignition and initial combustion processes that form soot precursors. A framework is also proposed for understanding the heat release and emission formation processes.

  2. Advanced Hybrid Particulate Collector Project Management Plan

    SciTech Connect (OSTI)

    Miller, S.J.

    1995-11-01

    As the consumption of energy increases, its impact on ambient air quality has become a significant concern. Recent studies indicate that fine particles from coal combustion cause health problems as well as atmospheric visibility impairment. These problems are further compounded by the concentration of hazardous trace elements such as mercury, cadmium, selenium, and arsenic in fine particles. Therefore, a current need exists to develop superior, but economical, methods to control emissions of fine particles. Since most of the toxic metals present in coal will be in particulate form, a high level of fine- particle collection appears to be the best method of overall air toxics control. However, over 50% of mercury and a portion of selenium emissions are in vapor form and cannot be collected in particulate control devices. Therefore, this project will focus on developing technology not only to provide ultrahigh collection efficiency of particulate air toxic emissions, but also to capture vapor- phase trace metals such as mercury and selenium. Currently, the primary state-of-the-art technologies for particulate control are fabric filters (baghouses) and electrostatic precipitators (ESPs). However, they both have limitations that prevent them from achieving ultrahigh collection of fine particulate matter and vapor-phase trace metals. The objective of this project is to develop a highly reliable advanced hybrid particulate collector (AHPC) that can provide > 99.99 % particulate collection efficiency for all particle sizes between 0.01 and 50 14m, is applicable for use with all U.S. coals, and is cost-0443competitive with existing technologies. Phase I of the project is organized into three tasks: Task I - Project Management, Reporting, and Subcontract Consulting Task 2 - Modeling, Design, and Construction of 200-acfm AHPC Model Task 3 - Experimental Testing and Subcontract Consulting

  3. Single-cylinder diesel engine study of four vegetable oils

    SciTech Connect (OSTI)

    Jacobus, M.J.; Geyer, S.M.; Lestz, S.S.; Risby, T.M.; Taylor, W.D.

    1983-10-01

    A single-cylinder, 0.36l, D.I. Diesel engine was operated on Diesel fuel, sunflowerseed oil, cottonseed oil, soybean oil, and peanut oil. The purpose of this study was to provide a detailed comparison of performance and emissions data and to characterize the biological activity of the particulate soluble organic fraction for each fuel using the Ames Salmonella typhimurium test. In addition, exhaust gas aldehyde samples were collected using the DNPH method. These samples were analyzed gravimetrically and separated into components from formaldehyde to heptaldehyde with a gas chromatograph. Results comparing the vegetable oils to Diesel fuel generally show slight improvements in thermal efficiency and indicated specific energy consumption; equal or higher gas-phase emissions; lower indicated specific revertant emissions; and significantly higher aldehyde emissions, including an increased percentage of formaldehyde.

  4. DIESEL et CANCER Dominique Lafon

    E-Print Network [OSTI]

    Boyer, Edmond

    1/5 DIESEL et CANCER Dominique Lafon INERIS (*) De nombreuses questions se posent sur la toxicité des émissions des moteurs diesel. C'est un sujet qui a beaucoup préoccupé les scientifiques ces EMISSIONS DU DIESEL. Avant d'aborder la toxicité des émissions du diesel, un rappel de leur composition est

  5. ELECTRONIC FUEL INJECTION DIESEL LOCOMOTIVES

    E-Print Network [OSTI]

    Jagannatham, Aditya K.

    ELECTRONIC FUEL INJECTION FOR DIESEL LOCOMOTIVES 13 August, 2011 Diesel Loco Modernisation Works, Patiala #12;ELECTRONIC FUEL INJECTION FOR DIESEL LOCOMOTIVES A Milestone in Green Initiatives by Indian the first major milestone in this direction for its fleet of Diesel Locomotives. Introduction The first

  6. Cleaning Up Diesel Engines | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Diesel Engines Cleaning Up Diesel Engines 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005deerwitherspoon.pdf More Documents & Publications...

  7. DIesel Emission Control Technology Developments | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    DIesel Emission Control Technology Developments DIesel Emission Control Technology Developments 2005deerandreoni.pdf More Documents & Publications Cleaning Up Diesel Engines...

  8. Particle Sensor for Diesel Combustion Monitoring | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Sensor for Diesel Combustion Monitoring Particle Sensor for Diesel Combustion Monitoring 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: University of...

  9. Airborne particulate discriminator

    DOE Patents [OSTI]

    Creek, Kathryn Louise (San Diego, CA); Castro, Alonso (Santa Fe, NM); Gray, Perry Clayton (Los Alamos, NM)

    2009-08-11

    A method and apparatus for rapid and accurate detection and discrimination of biological, radiological, and chemical particles in air. A suspect aerosol of the target particulates is treated with a taggant aerosol of ultrafine particulates. Coagulation of the taggant and target particles causes a change in fluorescent properties of the cloud, providing an indication of the presence of the target.

  10. Diesel prices decrease

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural GasNatural Gas Usage FormDiesel pricesDiesel pricesDiesel

  11. Diesel prices decrease

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural GasNatural Gas Usage FormDiesel pricesDieselDiesel prices

  12. Diesel prices decrease

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural GasNatural Gas Usage FormDiesel pricesDieselDiesel

  13. Diesel prices decrease slightly

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural GasNatural Gas Usage FormDieselDieselDiesel prices

  14. Diesel prices flat

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural GasNatural Gas Usage FormDieselDieselDiesel

  15. Diesel Particulate Oxidation Model: Combined Effects of Fixed & Volatile Carbon

    Broader source: Energy.gov [DOE]

    Poster presented at the 16th Directions in Engine-Efficiency and Emissions Research (DEER) Conference in Detroit, MI, September 27-30, 2010.

  16. Development of Advanced Diesel Particulate Filtration (DPF) Systems

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based| Department8,

  17. Development of Advanced Diesel Particulate Filtration (DPF) Systems |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based| Department8,Department of Energy 1 DOE Hydrogen and Fuel Cells

  18. Development of Advanced Diesel Particulate Filtration (DPF) Systems |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based| Department8,Department of Energy 1 DOE Hydrogen and Fuel

  19. Diesel Particulate Filtration (DPF) Technology: Success stories at the High

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based| Department8,Department of Energy2 DOE|Energy, Highlights of

  20. Evaluation of Ambient Particulate Matter (PM) Sampler Performance Through Wind Tunnel Testing 

    E-Print Network [OSTI]

    Guha, Abhinav

    2010-07-14

    Particulate (TSP) pre-separators. The masses and particle size distributions (PSDs) obtained from the filters of tested samplers were compared to those of a collocated isokinetic sampler. Sampler performance was documented using two parameters: cut-point (d_50...

  1. Sintered composite medium and filter

    DOE Patents [OSTI]

    Bergman, Werner (Pleasanton, CA)

    1987-01-01

    A particulate filter medium is formed of a sintered composite of 0.5 micron diameter quartz fibers and 2 micron diameter stainless steel fibers. A preferred composition is about 40 vol. % quartz and about 60 vol. % stainless steel fibers. The media is sintered at about 1100.degree. C. to bond the stainless steel fibers into a cage network which holds the quartz fibers. High filter efficiency and low flow resistance are provided by the smaller quartz fibers. High strength is provided by the stainless steel fibers. The resulting media has a high efficiency and low pressure drop similar to the standard HEPA media, with tensile strength at least four times greater, and a maximum operating temperature of about 550.degree. C. The invention also includes methods to form the composite media and a HEPA filter utilizing the composite media. The filter media can be used to filter particles in both liquids and gases.

  2. TRB 08-1311 Link-Based Emission Factors for Heavy-Duty Diesel Trucks Based

    E-Print Network [OSTI]

    Frey, H. Christopher

    for approximately 46% of NOx and 54% of PM10 of the nationwide on-road vehicle emission inventory (2). ThereforeTRB 08-1311 Link-Based Emission Factors for Heavy-Duty Diesel Trucks Based on Real-World Data H and particulate matter to on-road vehicle emission inventory. The objectives of this study are to estimate roadway

  3. DIESEL AEROSOL SAMPLING METHODOLOGY -CRC E-43 TECHNICAL SUMMARY AND CONCLUSIONS

    E-Print Network [OSTI]

    Minnesota, University of

    -the-road trucking industry due to their power, durability and efficiency. However, like other sources of combustion pollution, Diesels emit exhaust gases and particulates that are subject to regulation by State and Federal from internal combustion engines have traditionally been regulated solely on the basis of total

  4. Fast-regenerable sulfur dioxide absorbents for lean-burn diesel engine emission control

    SciTech Connect (OSTI)

    Li, Liyu; King, David L.

    2010-01-23

    It is known that sulfur oxides contribute significantly and deleteriously to the overall performance of lean-burn diesel engine aftertreatment systems, especially in the case of NOx traps. A Ag-based, fast regenerable SO2 absorbent has been developed and will be described. Over a temperature range of 300oC to 550oC, it absorbs almost all of the SO2 in the simulated exhaust gases during the lean cycles and can be fully regenerated by the short rich cycles at the same temperature. Its composition has been optimized as 1 wt% Pt-5wt%Ag-SiO2, and the preferred silica source for the supporting material has been identified as inert Cabosil fumed silica. The thermal instability of Ag2O under fuel-lean conditions at 230oC and above makes it possible to fast regenerate the sulfur-loaded absorbent during the following fuel-rich cycles. Pt catalyst helps reducing Ag2SO4 during rich cycles at low temperatures. And the chemically inert fumed SiO2 support gives the absorbent long term stability. This absorbent shows great potential to work under the same lean-rich cycling conditions as those imposed on the NOx traps, and thus, can protect the downstream particulate filter and the NOx trap from sulfur poisoning.

  5. DOE Project: Optimization of Advanced Diesel Engine Combustion Strategies "University Research in Advanced Combustion and Emissions Control" Office of FreedomCAR and Vehicle Technologies Program

    SciTech Connect (OSTI)

    Reitz, Rolf; Foster, D.; Ghandhi, J.; Rothamer, D.; Rutland, C.; Sanders, S.; Trujillo, M.

    2012-10-26

    The goal of the present technology development was to increase the efficiency of internal combustion engines while minimizing the energy penalty of meeting emissions regulations. This objective was achieved through experimentation and the development of advanced combustion regimes and emission control strategies, coupled with advanced petroleum and non-petroleum fuel formulations. To meet the goals of the project, it was necessary to improve the efficiency of expansion work extraction, and this required optimized combustion phasing and minimized in-cylinder heat transfer losses. To minimize fuel used for diesel particulate filter (DPF) regeneration, soot emissions were also minimized. Because of the complex nature of optimizing production engines for real-world variations in fuels, temperatures and pressures, the project applied high-fidelity computing and high-resolution engine experiments synergistically to create and apply advanced tools (i.e., fast, accurate predictive models) developed for low-emission, fuel-efficient engine designs. The companion experiments were conducted using representative single- and multi-cylinder automotive and truck diesel engines.

  6. Efficiency Considerations of Diesel Premixed Charge Compression...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Efficiency Considerations of Diesel Premixed Charge Compression Ignition Combustion Efficiency Considerations of Diesel Premixed Charge Compression Ignition Combustion Poster...

  7. Vehicle Emissions Review- 2011

    Broader source: Energy.gov [DOE]

    Reviews regulatory requirements and general technology approaches for heavy- and light-duty vehicle emissions control - filter technology, new catalysts, NOx control, diesel oxidation catalysts, gasoline particulate filters

  8. Active Diesel Emission Control Systems | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Systems Active Diesel Emission Control Systems 2004 Diesel Engine Emissions Reduction (DEER) Conferencen Presentation: RYPOS Active Diesel Emission Control Systems...

  9. Light Duty Diesels in the United States - Some Perspectives ...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Update on Diesel Exhaust Emission Control Technology and Regulations Review of Diesel Emission Control Technology Diesel Emission Control Review...

  10. Disk filter

    DOE Patents [OSTI]

    Bergman, W.

    1985-01-09

    An electric disk filter provides a high efficiency at high temperature. A hollow outer filter of fibrous stainless steel forms the ground electrode. A refractory filter material is placed between the outer electrode and the inner electrically isolated high voltage electrode. Air flows through the outer filter surfaces through the electrified refractory filter media and between the high voltage electrodes and is removed from a space in the high voltage electrode.

  11. Disk filter

    DOE Patents [OSTI]

    Bergman, Werner (Pleasanton, CA)

    1986-01-01

    An electric disk filter provides a high efficiency at high temperature. A hollow outer filter of fibrous stainless steel forms the ground electrode. A refractory filter material is placed between the outer electrode and the inner electrically isolated high voltage electrode. Air flows through the outer filter surfaces through the electrified refractory filter media and between the high voltage electrodes and is removed from a space in the high voltage electrode.

  12. Diesel lubrication and cooling systems

    SciTech Connect (OSTI)

    NONE

    1994-12-31

    The film describes the parts of diesel lubricating and cooling systems and how they work in relation to each other.

  13. Diesel lubrication and cooling systems

    SciTech Connect (OSTI)

    Not Available

    1994-01-01

    The film describes the parts of diesel lubricating and cooling systems and how they work in relation to each other.

  14. Perspectives Regarding Diesel Engine Emissions Reduction in the...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    2004deerblock.pdf More Documents & Publications Dumping Dirty Diesels: The View From the Bridge EPA Diesel Update Ultra-Low Sulfur diesel Update & Future Light Duty Diesel...

  15. Investigation of Direct Injection Vehicle Particulate Matter...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Direct Injection Vehicle Particulate Matter Emissions Investigation of Direct Injection Vehicle Particulate Matter Emissions This study focuses primarily on particulate matter mass...

  16. Filter systems for IGCC applications

    SciTech Connect (OSTI)

    Bevan, S.; Gieger, R.; Sobel, N.; Johnson, D.

    1995-11-01

    The objectives of this program were to identify metallic filter medium to be utilized in the Integrated Gasification Combined Cycle process (IGCC). In IGCC processes utilizing high efficiency desulfurizing technology, the traditional corrosion attack, sulfidation, is minimized so that metallic filters are viable alternatives over ceramic filters. Tampa Electric Company`s Polk Power Station is being developed to demonstrate Integrated Gasification Combined Cycle technology. The Pall Gas Solid Separation (GSS) System is a self cleaning filtration system designed to remove virtually all particulate matter from gas streams. The heart of the system is the filter medium used to collect the particles on the filter surface. The medium`s filtration efficiency, uniformity, permeability, voids volume, and surface characteristics are all important to establishing a permeable permanent cake. In-house laboratory blowback tests, using representative full scale system particulate, were used to confirm the medium selection for this project. Test elements constructed from six alloys were supplied for exposure tests: PSS 310SC (modified 310S alloy); PSS 310SC heat treated; PSS 310SC-high Cr; PSS 310SC-high Cr heat treated; PSS Hastelloy X; and PSS Hastelloy X heat treated.

  17. Diesel prices decrease

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural GasNatural Gas Usage FormDiesel pricesDiesel

  18. Diesel prices rise slightly

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural GasNatural Gas UsageDiesel prices increase nationallyDiesel

  19. Diesel prices slightly decrease

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural GasNatural Gas UsageDiesel prices increaseDiesel prices

  20. Diesel prices slightly decrease

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural GasNatural Gas UsageDiesel prices increaseDiesel

  1. Regulated and Unregulated Exhaust Emissions Comparison for Three Tier II Non-Road Diesel Engines Operating on Ethanol-Diesel Blends

    SciTech Connect (OSTI)

    Merritt, P. M.; Ulmet, V.; McCormick, R. L.; Mitchell, W. E.; Baumgard, K. J.

    2005-11-01

    Regulated and unregulated emissions (individual hydrocarbons, ethanol, aldehydes and ketones, polynuclear aromatic hydrocarbons (PAH), nitro-PAH, and soluble organic fraction of particulate matter) were characterized in engines utilizing duplicate ISO 8178-C1 eight-mode tests and FTP smoke tests. Certification No. 2 diesel (400 ppm sulfur) and three ethanol/diesel blends, containing 7.7 percent, 10 percent, and 15 percent ethanol, respectively, were used. The three, Tier II, off-road engines were 6.8-L, 8.1-L, and 12.5-L in displacement and each had differing fuel injection system designs. It was found that smoke and particulate matter emissions decreased with increasing ethanol content. Changes to the emissions of carbon monoxide and oxides of nitrogen varied with engine design, with some increases and some decreases. As expected, increasing ethanol concentration led to higher emissions of acetaldehyde (increases ranging from 27 to 139 percent). Benzene emissions were reduced by up to 50 percent with the ethanol-blended fuels. Emissions of 1,3-butadiene were also substantially decreased, with reductions ranging from 24 to 82 percent. Isolated trends were noted for certain PAHs. There was a decrease in 1-nitropyrene with use of ethanol in all cases. Particulate phase 1-nitropyrene was reduced from 18 to 62 percent. There was also a general increase in the proportion of heavy PAHs in the particulate phase with ethanol use, and although less pronounced, a general decrease in light PAHs in the particulate phase.

  2. Void/particulate detector

    DOE Patents [OSTI]

    Claytor, Thomas N. (Woodridge, IL); Karplus, Henry B. (Hinsdale, IL)

    1985-01-01

    Voids and particulates are detected in a flowing stream of fluid contained in a pipe by a detector which includes three transducers spaced about the pipe. A first transducer at a first location on the pipe transmits an ultrasonic signal into the stream. A second transducer detects the through-transmission of the signal at a second location and a third transducer at a third location upstream from the first location detects the back-scattering of the signal from any voids or particulates. To differentiate between voids and particulates a fourth transducer is positioned at a fourth location which is also upstream from the first location. The back-scattered signals are normalized with the through-transmission signal to minimize temperature fluctuations.

  3. Methylal and Methylal-Diesel Blended Fuels from Use In Compression-Ignition Engines

    SciTech Connect (OSTI)

    Keith D. Vertin; James M. Ohi; David W. Naegeli; Kenneth H. Childress; Gary P. Hagen; Chris I. McCarthy; Adelbert S. Cheng; Robert W. Dibble

    1999-05-05

    Gas-to-liquids catalytic conversion technologies show promise for liberating stranded natural gas reserves and for achieving energy diversity worldwide. Some gas-to-liquids products are used as transportation fuels and as blendstocks for upgrading crude derived fuels. Methylal (CH{sub 3}-O-CH{sub 2}-O-CH{sub 3}) also known as dimethoxymethane or DMM, is a gas-to-liquid chemical that has been evaluated for use as a diesel fuel component. Methylal contains 42% oxygen by weight and is soluble in diesel fuel. The physical and chemical properties of neat methylal and for blends of methylal in conventional diesel fuel are presented. Methylal was found to be more volatile than diesel fuel, and special precautions for distribution and fuel tank storage are discussed. Steady state engine tests were also performed using an unmodified Cummins 85.9 turbocharged diesel engine to examine the effect of methylal blend concentration on performance and emissions. Substantial reductions of particulate matter emissions h ave been demonstrated 3r IO to 30% blends of methylal in diesel fuel. This research indicates that methylal may be an effective blendstock for diesel fuel provided design changes are made to vehicle fuel handling systems.

  4. Diesel engine fuel systems

    SciTech Connect (OSTI)

    Not Available

    1994-01-01

    The film shows the basic structure of diesel systems, including the parts and operation of injectors and fuel pumps. It discusses Bosch, General Motors, and Excello Equipment. This title has been declared obsolete for use within the sponsoring agency, but may have content value for educational use.

  5. Diesel engine fuel systems

    SciTech Connect (OSTI)

    NONE

    1994-12-31

    The film shows the basic structure of diesel systems, including the parts and operation of injectors and fuel pumps. It discusses Bosch, General Motors, and Excello Equipment. This title has been declared obsolete for use within the sponsoring agency, but may have content value for educational use.

  6. DIESEL FUEL LUBRICATION

    SciTech Connect (OSTI)

    Qu, Jun [ORNL

    2012-01-01

    The diesel fuel injector and pump systems contain many sliding interfaces that rely for lubrication upon the fuels. The combination of the poor fuel lubricity and extremely tight geometric clearance between the plunger and bore makes the diesel fuel injector vulnerable to scuffing damage that severely limits the engine life. In order to meet the upcoming stricter diesel emission regulations and higher engine efficiency requirements, further fuel refinements that will result in even lower fuel lubricity due to the removal of essential lubricating compounds, more stringent operation conditions, and tighter geometric clearances are needed. These are expected to increase the scuffing and wear vulnerability of the diesel fuel injection and pump systems. In this chapter, two approaches are discussed to address this issue: (1) increasing fuel lubricity by introducing effective lubricity additives or alternative fuels, such as biodiesel, and (2) improving the fuel injector scuffing-resistance by using advanced materials and/or surface engineering processes. The developing status of the fuel modification approach is reviewed to cover topics including fuel lubricity origins, lubricity improvers, alternative fuels, and standard fuel lubricity tests. The discussion of the materials approach is focused on the methodology development for detection of the onset of scuffing and evaluation of the material scuffing characteristics.

  7. On-Road Use of Fischer-Tropsch Diesel Blends

    SciTech Connect (OSTI)

    Nigel Clark; Mridul Gautam; Donald Lyons; Chris Atkinson; Wenwei Xie; Paul Norton; Keith Vertin; Stephen Goguen; James Eberhardt

    1999-04-26

    Alternative compression ignition engine fuels are of interest both to reduce emissions and to reduce U.S. petroleum fuel demand. A Malaysian Fischer-Tropsch gas-to-liquid fuel was compared with California No.2 diesel by characterizing emissions from over the road Class 8 tractors with Caterpillar 3176 engines, using a chassis dynamometer and full scale dilution tunnel. The 5-Mile route was employed as the test schedule, with a test weight of 42,000 lb. Levels of oxides of nitrogen (NO{sub x}) were reduced by an average of 12% and particulate matter (PM) by 25% for the Fischer-Tropsch fuel over the California diesel fuel. Another distillate fuel produced catalytically from Fischer-Tropsch products originally derived from natural gas by Mossgas was also compared with 49-state No.2 diesel by characterizing emissions from Detroit Diesel 6V-92 powered transit buses, three of them equipped with catalytic converters and rebuilt engines, and three without. The CBD cycle was employed as the test schedule, with a test weight of 33,050 lb. For those buses with catalytic converters and rebuilt engines, NO x was reduced by 8% and PM was reduced by 31% on average, while for those buses without, NO x was reduced by 5% and PM was reduced by 20% on average. It is concluded that advanced compression ignition fuels from non-petroleum sources can offer environmental advantages in typical line haul and city transit applications.

  8. An experimental investigation of low octane gasoline in diesel engines.

    SciTech Connect (OSTI)

    Ciatti, S. A.; Subramanian, S.

    2011-09-01

    Conventional combustion techniques struggle to meet the current emissions norms. In particular, oxides of nitrogen (NO{sub x}) and particulate matter (PM) emissions have limited the utilization of diesel fuel in compression ignition engines. Advance combustion concepts have proved the potential to combine fuel efficiency and improved emission performance. Low-temperature combustion (LTC) offers reduced NO{sub x} and PM emissions with comparable modern diesel engine efficiencies. The ability of premixed, low-temperature compression ignition to deliver low PM and NO{sub x} emissions is dependent on achieving optimal combustion phasing. Diesel operated LTC is limited by early knocking combustion, whereas conventional gasoline operated LTC is limited by misfiring. So the concept of using an unconventional fuel with the properties in between those two boundary fuels has been experimented in this paper. Low-octane (84 RON) gasoline has shown comparable diesel efficiencies with the lowest NO{sub x} emissions at reasonable high power densities (NO{sub x} emission was 1 g/kW h at 12 bar BMEP and 2750 rpm).

  9. RETORT WATER PARTICULATES

    E-Print Network [OSTI]

    2011-01-01

    filtration. If excessive outgassing or foaming occurred, thefiltration due to COz outgassing and (4) bacterial removal,filter surface, from C02 outgassing during filtration and

  10. Center for Diesel Research Potential Efficiency Improvement

    E-Print Network [OSTI]

    Minnesota, University of

    Center for Diesel Research Potential Efficiency Improvement by Accessory Load Reduction on Hybrid University of Minnesota Center for Diesel Research #12;Center for Diesel Research Acknowledgements · Jeff;Center for Diesel Research Transit Energy Use and Cost · 633 M gallons diesel used for US transit in 2010

  11. IDENTIFICATION OF APPROPRIATE QUALIFICATION TESTING AND END-OF-LIFE WASTE STORAGE CONSIDERATIONS FOR DEEP BED SAND FILTERS

    SciTech Connect (OSTI)

    Matthews, K.

    2010-06-02

    Deep bed sand (DBS) filters have filtered radioactive particulates at two United States Department of Energy (DOE) sites since 1948. Some early DBS filters experienced issues with chemical attack on support tiles, requiring significant repairs. Designs of DBS filters constructed since 1970 paid greater attention to chemical compatibility, resulting in decades of reliable performance since 1975.

  12. High-Capacity Sulfur Dioxide Absorbents for Diesel Emissions Control

    SciTech Connect (OSTI)

    Li, Liyu; King, David L.

    2005-01-05

    High capacity sulfur dioxide absorbents based on manganese oxide octahedral molecular sieves (OMS) have been identified. These materials are based on MnO6 octahedra sharing faces and edges to form various tunnel structures (2x2, 2x3, 2x4, 3x3) differentiated by the number of octahedra on a side. The SO2 capacities of these materials, measured at 325 C with a feed containing 250 ppmv SO2 in air, are as high as 70wt% (wt/wt), remarkably higher than conventional metal oxide-based SO2 absorbents. Among the OMS materials the 2x2 member, cryptomelane, exhibits the highest capacity and adsorption rate. Its SO2 absorption behavior has been further characterized as a function of temperature, space velocity, and feed composition. The dominant pathway for SO2 absorption is through the oxidation of SO2 to SO3 by Mn4+ followed by SO3 reaction with Mn2+ to form MnSO4. Absorption can occur in the absence of gas phase oxygen, with a moderate loss in overall capacity. The inclusion of reducible gases NO and CO in the feed does not reduce SO2 capacity. The absorption capacity decreases at high space velocity and lower absorption temperature, indicating the important role of diffusion of sulfate from the surface to the bulk of the material in order to reach full capacity. A color change of cryptomelane from black to yellow-brown after SO2 absorption can be used as an indicator of absorption progress. Cryptomelane can be synthesized using MnSO4 as a reagent. Therefore, after full SO2 absorption the product MnSO4 can be re-used as raw material for a subsequent cryptomelane synthesis. Cryptomelane has a similarly high capacity toward SO3, therefore it can be used for removal of all SOx species generated from a variety of combustion sources. Cryptomelane may find application as a replaceable absorbent for the removal of SOx from diesel truck exhaust, protecting downstream emissions control devices such as particulate filters and NOx traps.

  13. Bonded carbon or ceramic fiber composite filter vent for radioactive waste

    DOE Patents [OSTI]

    Brassell, Gilbert W. (13237 W. 8th Ave., Golden, CO 80401); Brugger, Ronald P. (Lafayette, CO)

    1985-02-19

    Carbon bonded carbon fiber composites as well as ceramic or carbon bonded ceramic fiber composites are very useful as filters which can separate particulate matter from gas streams entraining the same. These filters have particular application to the filtering of radioactive particles, e.g., they can act as vents for containers of radioactive waste material.

  14. Development of the DDA 8. 2L diesel engine for 1988 emission standards

    SciTech Connect (OSTI)

    Winsor, R.E.; Wheeler, C.L.

    1988-01-01

    The emission development performed to meet 1988 Federal and California emission standards with a four-stroke direct-injection V-8 diesel engine of 8.2L displacement is described. On the naturally aspirated engine the major concern was meeting particulate and lug smoke standards at low NO/sub x/ levels. Acceleration smoke and particulate emission reduction was necessary on the turbocharged engine. The performance and emission goals were met by modifying the unit injectors and pistons of both naturally aspirated and turbocharged engines.

  15. Clean Diesel Engine Component Improvement Program | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Diesel Engine Component Improvement Program Clean Diesel Engine Component Improvement Program 2005deermay.pdf More Documents & Publications Noxtechs PAC System Development and...

  16. French perspective on diesel engines & emissions | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    French perspective on diesel engines & emissions French perspective on diesel engines & emissions 2002 DEER Conference Presentation: Aaqius & Aaqius 2002deernino.pdf More...

  17. Optimizing Low Temperature Diesel Combustion | Department of...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Optimizing Low Temperature Diesel Combustion Optimizing Low Temperature Diesel Combustion Presentation from the U.S. DOE Office of Vehicle Technologies "Mega" Merit Review 2008 on...

  18. Diesel Engine Emission Reduction (DEER) Experiment | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Weekend Air Pollutant Levels in Ozone Problem Areas in the U.S. Diesel Injection Shear-Stress Advanced Nozzle (DISSAN) Emissions and Durability of Underground Mining Diesel...

  19. Diesel vs Gasoline Production | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    vs Gasoline Production Diesel vs Gasoline Production A look at refinery decisions that decide "swing" between diesel and gasoline production deer08leister.pdf More Documents &...

  20. Electrochemical NOx Sensor for Monitoring Diesel Emissions |...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Sensor for Monitoring Diesel Emissions Electrochemical NOx Sensor for Monitoring Diesel Emissions Presentation from the U.S. DOE Office of Vehicle Technologies "Mega" Merit Review...

  1. Potential Thermoelectric Applications in Diesel Vehicles | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Thermoelectric Applications in Diesel Vehicles Potential Thermoelectric Applications in Diesel Vehicles 2003 DEER Conference Presentation: BSST, LLC 2003deercrane.pdf More...

  2. Ultra-Clean Diesel Fuel: U.S. Production and Distribution Capability

    SciTech Connect (OSTI)

    Hadder, G.R.

    2001-02-15

    Diesel engines have potential for use in a large number of future vehicles in the US. However, to achieve this potential, proponents of diesel engine technologies must solve diesel's pollution problems, including objectionable levels of emissions of particulates and oxides of nitrogen. To meet emissions reduction goals, diesel fuel quality improvements could enable diesel engines with advanced aftertreatment systems to achieve the necessary emissions performance. The diesel fuel would most likely have to be reformulated to be as clean as low sulfur gasoline. This report examines the small- and large-market extremes for introduction of ultra-clean diesel fuel in the US and concludes that petroleum refinery and distribution systems could produce adequate low sulfur blendstocks to satisfy small markets for low sulfur (30 parts per million) light duty diesel fuel, and deliver that fuel to retail consumers with only modest changes. Initially, there could be poor economic returns on under-utilized infrastructure investments. Subsequent growth in the diesel fuel market could be inconsistent with U.S. refinery configurations and economics. As diesel fuel volumes grow, the manufacturing cost may increase, depending upon how hydrodesulfurization technologies develop, whether significantly greater volumes of the diesel pool have to be desulfurized, to what degree other properties like aromatic levels have to be changed, and whether competitive fuel production technologies become economic. Low sulfur (10 parts per million) and low aromatics (10 volume percent) diesel fuel for the total market could require desulfurization, dearomatization, and hydrogen production investments amounting to a third of current refinery market value. The refinery capital cost component alone would be 3 cents per gallon of diesel fuel. Outside of refineries, the gas-to-liquids (GTL) plant investment cost would be 3 to 6 cents per gallon. With total projected investments of $11.8 billion (6 to 9 cents per gallon) for the U.S. Gulf Coast alone, financing, engineering, and construction and material availability are major issues that must be addressed, for both refinery and GTL investments.

  3. Void/particulate detector

    DOE Patents [OSTI]

    Claytor, T.N.; Karplus, H.B.

    1983-09-26

    Apparatus for detecting voids and particulates in a flowing stream of fluid contained in a pipe may comprise: (a) a transducer for transmitting an ultrasonic signal into the stream, coupled to the pipe at a first location; (b) a second transducer for detecting the through-transmission of said signal, coupled to the pipe at a second location; (c) a third transducer for detecting the back-scattering of said signal, coupled to the pipe at a third location, said third location being upstream from said first location; (d) circuit means for normalizing the back-scattered signal from said third transducer to the through-transmitted signal from said second transducer; which normalized signal provides a measure of the voids and particulates flowing past said first location.

  4. Rigid particulate matter sensor

    DOE Patents [OSTI]

    Hall, Matthew (Austin, TX)

    2011-02-22

    A sensor to detect particulate matter. The sensor includes a first rigid tube, a second rigid tube, a detection surface electrode, and a bias surface electrode. The second rigid tube is mounted substantially parallel to the first rigid tube. The detection surface electrode is disposed on an outer surface of the first rigid tube. The detection surface electrode is disposed to face the second rigid tube. The bias surface electrode is disposed on an outer surface of the second rigid tube. The bias surface electrode is disposed to face the detection surface electrode on the first rigid tube. An air gap exists between the detection surface electrode and the bias surface electrode to allow particulate matter within an exhaust stream to flow between the detection and bias surface electrodes.

  5. Reformulated diesel fuel and method

    DOE Patents [OSTI]

    McAdams, Hiramie T [Carrollton, IL; Crawford, Robert W [Tucson, AZ; Hadder, Gerald R [Oak Ridge, TN; McNutt, Barry D [Arlington, VA

    2006-08-22

    A method for mathematically identifying at least one diesel fuel suitable for combustion in an automotive diesel engine with significantly reduced emissions and producible from known petroleum blendstocks using known refining processes, including the use of cetane additives (ignition improvers) and oxygenated compounds.

  6. Biological activity of exhaust emissions from two after-treatment device-equipped light-duty diesel engines

    SciTech Connect (OSTI)

    Carraro, E.; Locatelli, A.L.; Ferrero, C.; Fea, E.; Gilli, G. [Univ. of Turin (Italy)

    1995-10-01

    Whole diesel exhaust has recently been classified as a portable carcinogen, and particulate exhaust known to contain mutagenic and carcinogenic chemicals, has clearly shown to be mutagenic in several genotoxicity studies. The goal of this study was to determine whether, and to what extent, the installation of some exhaust aftertreatment devices on two light-duty diesel engines (1930 cc and 2500 cc) EGR-valve equipped may reduce mutagenic activity associated to particles collected during both USA and European driving cycles. The preliminary results point out the usefulness of mutagenicity tests in the research of even new more efficient automotive emission aftertreatment devices. The aim of this investigation is to determine whether, and to what range, the use of some new aftertreatment devices on light-duty diesel engines could reduce the particle-associated genotoxic potential of diesel emissions. 24 refs., 3 figs., 1 tab.

  7. "Performance, Emission and Particle distribution of Diesel Engines Fueled with Diesel-Dimethoxymethane (DMM) Blends"

    E-Print Network [OSTI]

    Xibin Wang "Performance, Emission and Particle distribution of Diesel Engines Fueled with Diesel-Dimethoxymethane (DMM) Blends" Abstract : Combustion, performance and emission were studied for DI diesel engine fuelled with DMM/diesel fuel blends for DMM content from 0 to 50%. Results showed that, for diesel engine with fuel

  8. Diesel prices decrease

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural GasNatural Gas Usage FormDiesel

  9. Diesel prices increase nationally

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural GasNatural Gas UsageDiesel prices increase nationally The

  10. Diesel NO{sub x} reduction by plasma-regenerated absorbent beds

    DOE Patents [OSTI]

    Wallman, P.H.; Vogtlin, G.E.

    1998-02-10

    Reduction of NO{sub x} from diesel engine exhaust by use of plasma-regenerated absorbent beds is described. This involves a process for the reduction of NO{sub x} and particulates from diesel engines by first absorbing NO{sub x} onto a solid absorbent bed that simultaneously acts as a physical trap for the particulate matter, and second regenerating said solid absorbent by pulsed plasma decomposition of absorbed NO{sub x} followed by air oxidation of trapped particulate matter. The absorbent bed may utilize all metal oxides, but the capacity and the kinetics of absorption and desorption vary between different materials, and thus the composition of the absorbent bed is preferably a material which enables the combination of NO{sub x} absorption capability with catalytic activity for oxidation of hydrocarbons. Thus, naturally occurring or synthetically prepared materials may be utilized, particularly those having NO{sub x} absorption properties up to temperatures around 400 C which is in the area of diesel engine exhaust temperatures. 1 fig.

  11. Diesel NO.sub.x reduction by plasma-regenerated absorbend beds

    DOE Patents [OSTI]

    Wallman, P. Henrik (Berkeley, CA); Vogtlin, George E. (Fremont, CA)

    1998-01-01

    Reduction of NO.sub.x from diesel engine exhaust by use of plasma-regenerated absorbent beds. This involves a process for the reduction of NO.sub.x and particulates from diesel engines by first absorbing NO.sub.x onto a solid absorbent bed that simultaneously acts as a physical trap for the particulate matter, and second regenerating said solid absorbent by pulsed plasma decomposition of absorbed NO.sub.x followed by air oxidation of trapped particulate matter. The absorbent bed may utilize all metal oxides, but the capacity and the kinetics of absorption and desorption vary between different materials, and thus the composition of the absorbent bed is preferably a material which enables the combination of NO.sub.x absorption capability with catalytic activity for oxidation of hydrocarbons. Thus, naturally occurring or synthetically prepared materials may be utilized, particularly those having NO.sub.x absorption properties up to temperatures around 400.degree. C. which is in the area of diesel engine exhaust temperatures.

  12. The regenerable trap oxidizer-An emission control technique for diesel engines

    SciTech Connect (OSTI)

    Abthoff, J.; Schuster, H.D.; Langer, H.J.; Loose, G.

    1985-01-01

    Daimler-Benz made an early start with the development of systems for the aftertreatment of the exhaust gas emitted by diesel engines. The more important limiting conditions could best be met by the provision of a ceramic, selfcleaning trap oxidizer (TO). In such filters, self-regeneration is effected continuously while driving without any external control. Either partial or complete regeneration is effected, depending on the temperature, oxygen content and rate of flow of the exhaust gas, the amount of soot in the filter and the period for which a given operating condition is maintained. Such a trap oxidizer was developed for a 3.0 liter turbocharged diesel engine to the extent necessary for series production and has been fitted to type 300 SD and 300 D turbocharged diesel of model year 1985 in California.

  13. Heavy Duty Diesels- The Road Ahead

    Broader source: Energy.gov [DOE]

    This presentation gives a landscape picture of diesel engine technologies from the Daimler point of view.

  14. EPA Clean Diesel Funding Assistance Program

    Broader source: Energy.gov [DOE]

    The U.S. Environmental Protection Agency (EPA) is accepting applications for the Clean Diesel Funding Assistance Program for projects to achieve significant reductions in diesel emissions in terms of tons of pollution produced by diesel engines and diesel emissions exposure, particularly from fleets operating at or servicing goods movement facilities located in areas designated as having poor air quality.

  15. EPA Tribal Clean Diesel Funding Assistance Program

    Broader source: Energy.gov [DOE]

    The U.S. Environmental Protection Agency (EPA) is accepting applications for the Tribal Clean Diesel Funding Assistance Program for tribal projects to achieve significant reductions in diesel emissions in terms of tons of pollution produced by diesel engines and diesel emissions exposure. Eligible entities include tribal governments.

  16. Particulate Matter Aerosols

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDid you notHeatMaRIEdioxideUser Careers/ResearchParking ParkingParticulate

  17. Diesel fuel from biomass

    SciTech Connect (OSTI)

    Kuester, J.L.

    1984-01-01

    A project to convert various biomass materials to diesel type transportation fuel compatible with current engine designs and the existing distribution system is described. A continuous thermochemical indirect liquefaction approach is used. The system consists of a circulating solid fluidized bed gasification system to produce a synthesis gas containing olefins, hydrogen and carbon monoxide followed by a catalytic liquefaction step to convert the synthesis gas to liquid hydrocarbon fuel. The major emphasis on the project at the present time is to maximize product yield. A level of 60 gals of diesel type fuel per ton of feedstock (dry, ash free basis) is expected. Numerous materials have been processed through the conversion system without any significant change in product quality (essentially C/sub 7/-C/sub 17/ paraffinic hydrocarbons with cetane indicies of 50+). Other tasks in progress include factor studies, process simplification, process control and scale-up to a 10 ton/day Engineering Test Facility. 18 references, 4 figures, 9 tables.

  18. Cummins Light Truck Clean Diesel | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Light Truck Clean Diesel Cummins Light Truck Clean Diesel 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation 2004deerstang2.pdf More Documents & Publications...

  19. Technology Development for Light Duty High Efficient Diesel Engines...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Light Duty High Efficient Diesel Engines Technology Development for Light Duty High Efficient Diesel Engines Improve the efficiency of diesel engines for light duty applications...

  20. The 60% Efficient Diesel Engine: Probably, Possible, Or Just...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    The 60% Efficient Diesel Engine: Probably, Possible, Or Just a Fantasy? The 60% Efficient Diesel Engine: Probably, Possible, Or Just a Fantasy? 2005 Diesel Engine Emissions...

  1. Heavy-Truck Clean Diesel (HTCD) Program | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Heavy-Truck Clean Diesel (HTCD) Program Heavy-Truck Clean Diesel (HTCD) Program 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Caterpillar...

  2. Real-Time Measurement of Diesel Trap Efficiency | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Measurement of Diesel Trap Efficiency Real-Time Measurement of Diesel Trap Efficiency 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters...

  3. Effects of an Accelerated Diesel Engine Replacement/Retrofit Program

    E-Print Network [OSTI]

    Millstein, Dev E.; Harley, Robert A

    2009-01-01

    and Cackette, T. A. , (2001). Diesel engines: environmentalfrom On-Road Gasoline and Diesel Vehicles. Atmos. Environ.emissions from gasoline- and diesel-powered motor vehicles.

  4. An Improvement of Diesel PM and NOx Reduction System | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    & Publications Development on simultaneous reduction system of NOx and PM from a diesel engine An Improvement of Diesel PM and NOx Reduction System New Diesel Emissions...

  5. Carbonyl Emissions from Gasoline and Diesel Motor Vehicles

    E-Print Network [OSTI]

    Jakober, Chris A.

    2008-01-01

    emissions from gasoline and diesel motor vehicles. Environ.of four dilutions of diesel engine exhaust for a subchronicautomobiles and heavy-duty diesel trucks. Environ. Sci.

  6. North American Market Challenges for Diesel Engines | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    American Market Challenges for Diesel Engines North American Market Challenges for Diesel Engines 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Gale Banks...

  7. Hydrogen as a Supplemental Fuel in Diesel Engines | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    as a Supplemental Fuel in Diesel Engines Hydrogen as a Supplemental Fuel in Diesel Engines Poster presentation from the 2007 Diesel Engine-Efficiency & Emissions Research...

  8. Technical Challenges and Opportunities Light-Duty Diesel Engines...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Challenges and Opportunities Light-Duty Diesel Engines in North America Technical Challenges and Opportunities Light-Duty Diesel Engines in North America 2005 Diesel Engine...

  9. Design Challenges of Locomotive Diesel Engines | Department of...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Challenges of Locomotive Diesel Engines Design Challenges of Locomotive Diesel Engines 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters...

  10. Adaptive Injection Strategies (AIS) for Ultra-low Emissions Diesel...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Injection Strategies (AIS) for Ultra-low Emissions Diesel Engines Adaptive Injection Strategies (AIS) for Ultra-low Emissions Diesel Engines Presentation given at the 2007 Diesel...

  11. Unique Catalyst System for NOx Reduction in Diesel Exhaust |...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Catalyst System for NOx Reduction in Diesel Exhaust Unique Catalyst System for NOx Reduction in Diesel Exhaust Poster presentation at the 2007 Diesel Engine-Efficiency & Emissions...

  12. Fuels and Lubricants to Support Advanced Diesel Engine Technology...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Lubricants to Support Advanced Diesel Engine Technology Fuels and Lubricants to Support Advanced Diesel Engine Technology 2005 Diesel Engine Emissions Reduction (DEER) Conference...

  13. Regulated Emissions from Diesel and Compressed Natural Gas Transit...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Emissions from Diesel and Compressed Natural Gas Transit Buses Regulated Emissions from Diesel and Compressed Natural Gas Transit Buses Poster presentaiton at the 2007 Diesel...

  14. Off-Highway Heavy Vehicle Diesel Efficiency Improvement and Emissions...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Off-Highway Heavy Vehicle Diesel Efficiency Improvement and Emissions Reduction Off-Highway Heavy Vehicle Diesel Efficiency Improvement and Emissions Reduction 2005 Diesel Engine...

  15. How Exhaust Emissions Drive Diesel Engine Fuel Efficiency | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    How Exhaust Emissions Drive Diesel Engine Fuel Efficiency How Exhaust Emissions Drive Diesel Engine Fuel Efficiency 2004 Diesel Engine Emissions Reduction (DEER) Conference...

  16. Retrofit Diesel Emissions Control System Providing 50% NOxControl...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Diesel Emissions Control System Providing 50% NOxControl Retrofit Diesel Emissions Control System Providing 50% NOxControl 2005 Diesel Engine Emissions Reduction (DEER) Conference...

  17. Next Generation Diesel Engine Control | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Diesel Engine Control Next Generation Diesel Engine Control Presentation given at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007,...

  18. An Improvement of Diesel PM and NOx Reduction System | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    of Diesel PM and NOx Reduction System Development on simultaneous reduction system of NOx and PM from a diesel engine Simplification of Diesel Emission Control System Packaging...

  19. Dumping Dirty Diesels: The View From the Bridge | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Dumping Dirty Diesels: The View From the Bridge Dumping Dirty Diesels: The View From the Bridge 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters...

  20. Business Case for Light-Duty Diesels | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Diesels Business Case for Light-Duty Diesels 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005deergodwin.pdf More Documents & Publications...

  1. Future Breathing System Requirements for Clean Diesel Engines...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Breathing System Requirements for Clean Diesel Engines Future Breathing System Requirements for Clean Diesel Engines Poster presentation at the 2007 Diesel Engine-Efficiency &...

  2. Future Diesel Engine Thermal Efficiency Improvement andn Emissions...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Diesel Engine Thermal Efficiency Improvement andn Emissions Control Technology Future Diesel Engine Thermal Efficiency Improvement andn Emissions Control Technology 2005 Diesel...

  3. Lubricant Formulation and Consumption Effects on Diesel Exhaust...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Lubricant Formulation and Consumption Effects on Diesel Exhaust Ash Emissions: Lubricant Formulation and Consumption Effects on Diesel Exhaust Ash Emissions: 2005 Diesel Engine...

  4. Exhaust Heat Recovery for Rural Alaskan Diesel Generators | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Recovery for Rural Alaskan Diesel Generators Exhaust Heat Recovery for Rural Alaskan Diesel Generators Poster presentation at the 2007 Diesel Engine-Efficiency & Emissions Research...

  5. Advanced Modeling of Direct-Injection Diesel Engines | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Modeling of Direct-Injection Diesel Engines Advanced Modeling of Direct-Injection Diesel Engines 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters...

  6. Glow Plug Integrated Piezo-Ceramic Combustion Sensor for Diesel...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Glow Plug Integrated Piezo-Ceramic Combustion Sensor for Diesel Engines Glow Plug Integrated Piezo-Ceramic Combustion Sensor for Diesel Engines 2005 Diesel Engine Emissions...

  7. Apparatus for particulate matter analysis

    DOE Patents [OSTI]

    Gundel, Lara A.; Apte, Michael G.; Hansen, Anthony D.; Black, Douglas R.

    2007-01-30

    The apparatus described herein is a miniaturized system for particle exposure assessment (MSPEA) for the quantitative measurement and qualitative identification of particulate content in gases. The present invention utilizes a quartz crystal microbalance (QCM) or other mass-sensitive temperature compensated acoustic wave resonator for mass measurement. Detectors and probes and light sources are used in combination for the qualitative determination of particulate matter.

  8. Diesel prices continue to fall

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural GasNatural Gas Usage Form 2003(EIA)DieselDieselDiesel

  9. Diesel prices continue to increase

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural GasNatural Gas Usage FormDiesel prices continueDieselDiesel

  10. Diesel prices slightly decrease nationally

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural GasNatural Gas UsageDiesel prices increaseDieselDiesel

  11. Ceramic hot-gas filter

    DOE Patents [OSTI]

    Connolly, E.S.; Forsythe, G.D.; Domanski, D.M.; Chambers, J.A.; Rajendran, G.P.

    1999-05-11

    A ceramic hot-gas candle filter is described having a porous support of filament-wound oxide ceramic yarn at least partially surrounded by a porous refractory oxide ceramic matrix, and a membrane layer on at least one surface thereof. The membrane layer may be on the outer surface, the inner surface, or both the outer and inner surface of the porous support. The membrane layer may be formed of an ordered arrangement of circularly wound, continuous filament oxide ceramic yarn, a ceramic filler material which is less permeable than the filament-wound support structure, or some combination of continuous filament and filler material. A particularly effective membrane layer features circularly wound filament with gaps intentionally placed between adjacent windings, and a filler material of ceramic particulates uniformly distributed throughout the gap region. The filter can withstand thermal cycling during back pulse cleaning and is resistant to chemical degradation at high temperatures.

  12. Ceramic hot-gas filter

    DOE Patents [OSTI]

    Connolly, Elizabeth Sokolinski (Wilmington, DE); Forsythe, George Daniel (Landenberg, PA); Domanski, Daniel Matthew (New Castle, DE); Chambers, Jeffrey Allen (Hockessin, DE); Rajendran, Govindasamy Paramasivam (Boothwyn, PA)

    1999-01-01

    A ceramic hot-gas candle filter having a porous support of filament-wound oxide ceramic yarn at least partially surrounded by a porous refractory oxide ceramic matrix, and a membrane layer on at least one surface thereof. The membrane layer may be on the outer surface, the inner surface, or both the outer and inner surface of the porous support. The membrane layer may be formed of an ordered arrangement of circularly wound, continuous filament oxide ceramic yarn, a ceramic filler material which is less permeable than the filament-wound support structure, or some combination of continuous filament and filler material. A particularly effective membrane layer features circularly wound filament with gaps intentionally placed between adjacent windings, and a filler material of ceramic particulates uniformly distributed throughout the gap region. The filter can withstand thermal cycling during backpulse cleaning and is resistant to chemical degradation at high temperatures.

  13. Diesel Emission Control in Review

    Broader source: Energy.gov [DOE]

    Presentation given at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

  14. Measuring PM Distribution in a Catalyzed Particulate Filter using...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    An Innovative Substrate for Future Applications with Low Weight and High Porosity Neutron Imaging of Advanced Engine Technologies Experimental Studies for DPF and SCR Model,...

  15. High Efficiency Particulate Air (HEPA) Filter Test Facility (FTF) |

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergy A plug-inPPLforLDRD Report11,Security Officer ProgramHelpDeskScience

  16. Development of Advanced Particulate Filters | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based| Department8,Department of Energy 1 DOE Hydrogen and Fuelof

  17. Comparative emissions from natural gas and diesel buses

    SciTech Connect (OSTI)

    Clark, N.N.; Gadapati, C.J.; Lyons, D.W.; Wang, W.; Gautam, M.; Bata, R.M. [West Virginia Univ., Morgantown, WV (United States); Kelly, K.; White, C.L. [National Renewable Energy Lab., Golden, CO (United States)

    1995-12-31

    Data has been gathered using the West Virginia University Heavy Duty Transportable Emissions Laboratories from buses operating on diesel and a variety of alternate fuels in the field. Emissions data are acquired from buses using the Central Business District cycle reported in SAE Standard J1376; this cycle has 14 ramps with 20 mph (32.2 km/h) peaks, separated by idle periods. During the three years of testing, a significant fraction of emissions data was acquired from buses with Cummins L-10 engines designed to operate on either CNG or diesel. The CNG lean burn engines were spark ignited and throttled. Early CNG engines, which were pre-certification demonstration models, have provided the bulk of the data, but data from 9 buses with more advanced technology were also available. It has been found that carbon monoxide (CO) levels from early Cummins L-10 CNG powered buses varied greatly from bus to bus, with the higher values ascribed to either faulty catalytic converters or a rich idle situation, while the later model CNG L-10 engines offered CO levels considerably lower than those typical of diesel engines. The NO{sub x} emissions were on par with those from diesel L-10 buses. Those natural gas buses with engines adjusted correctly for air-fuel ratio, returned very low emissions data. CNG bus hydrocarbon emissions are not readily compared with diesel engine levels since only the non-methane organic gases (NMOG) are of interest. Data show that NMOG levels are low for the CNG buses. Significant reduction was observed in the particulate matter emitted by the CNG powered buses compared to the diesel buses, in most cases the quantity captured was vanishingly small. Major conclusions are that engine maintenance is crucial if emissions are to remain at design levels and that the later generation CNG engines show marked improvement over the earlier models. One may project for the long term that closed loop stoichiometry control is desirable even in lean burn applications.

  18. Interpretation of Secondary Organic Aerosol Formation from Diesel Exhaust Photooxidation in an Environmental Chamber

    SciTech Connect (OSTI)

    Nakao, Shunsuke; Shrivastava, ManishKumar B.; Nguyen, Anh; Jung, Hee-Jung; Cocker, David R.

    2011-04-14

    Secondary organic aerosol (SOA) formation from diesel exhaust in a smog chamber was investigated. Particle volume measurement based on mobility diameter is shown to underestimate SOA formation from diesel exhaust due to the external void space of agglomerate particles, in which case mass-based measurement technique is necessary. Rapid determination of particle effective density as a function of particle mass was performed by an Aerosol Particle Mass analyzer – Scanning Mobility Particle Sizer (APM-SMPS) to obtain particle mass concentration and fractal dimension. Continuous aging of aerosol was observed in terms of atomic ratio (O/C), from 0.05 to 0.25 in 12 hours, underscoring the importance of multi-generational oxidation of low-volatile organic vapors emitted from diesel engine as the significant source of oxygenated SOA. Experimental conditions possibly have strong impacts on physical evolution of diesel particulates in a smog chamber. Higher particle effective densities were observed when raw exhaust was injected into a full bag as opposed to filling a bag with diluted exhaust using an ejector diluter. When longer transfer line was used for injecting diesel exhaust into the smog chamber, rapid particle coagulation was observed, leading to increasing particle volume concentration in dark while its mass concentration is decreasing.

  19. Experimental Studies for DPF and SCR Model, Control System, and...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Model, Control System, and OBD Development for Engines Using Diesel and Biodiesel Fuels Measuring PM Distribution in a Catalyzed Particulate Filter using a Terahertz Wave Scanner...

  20. --No Title--

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    producing 2- and 3-dimensional images of exhaust gas recirculation (EGR) coolers and images of diesel particulate filters (DPFs), which remove the black soot cloud so often...

  1. Operability and Emissions from a Medium-Duty Fleet Operating...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Documents & Publications Diesel Particulate Filter Technology for Low-Temperature and Low-NOxPM Applications Investigation of the Effects of Fuels and Aftertreatment Devices on...

  2. Effect of Machining Procedures on the Strength of Ceramics for...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    More Documents & Publications Reliability and Design Strength Limit Calculations on Diesel Particulate Filters Durability of ACERT Engine Components View from the Bridge...

  3. Coupled Kinetic, Thermal, and Mechanical Modeling of FIB Micro...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Capabilities at the High Temperature Materials Laboratory and HTML User Program Success Stories Failure Stress and Apparent Elastic Modulus of Diesel Particulate Filter Ceramics...

  4. Future Engine Fluids Technologies: Durable, Fuel-Efficient, and...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    & Publications Controlled Experiments on the Effects of LubricantAdditive (Low-Ash, Ashless) Characteristics on DPF Degradation Diesel Particulate Filters: Market...

  5. Key Parameters Affecting DPF Performance Degradation and Impact on Lifetime Fuel Economy

    Broader source: Energy.gov [DOE]

    Summarizes latest findings on impact of specific parameters affecting ash-related diesel particulate filter performance degradation and information useful to enhance performance and extend service life

  6. STAR-CD es-aftertreatment | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    with STAR-CD using Transient Flemelet Models: TIF and TPV Development of Artificial Ash Accelerated Accumulation Test Diesel Particulate Filters: Market Introducution in...

  7. Key Parameters Affecting DPF Performance Degradation and Impact...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Fuel Economy Summarizes latest findings on impact of specific parameters affecting ash-related diesel particulate filter performance degradation and information useful to...

  8. CLEERS Activities: Diesel Soot Filter Characterization & NOx Control

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based Fuels| Department ofBusinessCEA - ExternalCESPOMER F.Fundamentals |

  9. Diesel Soot Filter Characterization and Modeling for Advanced Substrates |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based| Department8,Department of Energy2 DOE|Energy, Highlights ofDepartment

  10. Advanced Diesel Common Rail Injection System for Future Emission Legislation

    Broader source: Energy.gov [DOE]

    2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Robert Bosch GMBH Common Rail System Engineering for PC Diesel Systems

  11. Chemical and Physical Characteristics of Diesel Aerosol | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    and Physical Characteristics of Diesel Aerosol Chemical and Physical Characteristics of Diesel Aerosol 2002 DEER Conference Presentation: University of Minnesota...

  12. Simultaneous Efficiency, NOx, and Smoke Improvements through Diesel/Gasoline Dual-Fuel Operation in a Diesel Engine 

    E-Print Network [OSTI]

    Sun, Jiafeng

    2014-08-05

    Diesel/gasoline dual-fuel combustion uses both gasoline and diesel fuel in diesel engines to exploit their different reactivities. This operation combines the advantages of diesel fuel and gasoline while avoiding their disadvantages, attains...

  13. ADVANCED HYBRID PARTICULATE COLLECTOR

    SciTech Connect (OSTI)

    Ye Zhuang; Stanley J. Miller; Michelle R. Olderbak; Rich Gebert

    2001-12-01

    A new concept in particulate control, called an advanced hybrid particulate collector (AHPC), is being developed under funding from the U.S. Department of Energy. The AHPC combines the best features of electrostatic precipitators (ESPs) and baghouses in an entirely novel manner. The AHPC concept combines fabric filtration and electrostatic precipitation in the same housing, providing major synergism between the two methods, both in the particulate collection step and in transfer of dust to the hopper. The AHPC provides ultrahigh collection efficiency, overcoming the problem of excessive fine-particle emissions with conventional ESPs, and solves the problem of reentrainment and re-collection of dust in conventional baghouses. Phase I of the development effort consisted of design, construction, and testing of a 5.7-m{sup 3}/min (200-acfm) working AHPC model. Results from both 8-hr parametric tests and 100-hr proof-of-concept tests with two different coals demonstrated excellent operability and greater than 99.99% fine-particle collection efficiency. Since all of the developmental goals of Phase I were met, the approach was scaled up in Phase II to a size of 255 m{sup 3}/min (9000 acfm) (equivalent in size to 2.5 MW) and was installed on a slipstream at the Big Stone Power Plant. For Phase II, the AHPC at Big Stone Power Plant was operated continuously from late July 1999 until mid-December 1999. The Phase II results were highly successful in that ultrahigh particle collection efficiency was achieved, pressure drop was well controlled, and system operability was excellent. For Phase III, the AHPC was modified into a more compact configuration, and components were installed that were closer to what would be used in a full-scale commercial design. The modified AHPC was operated from April to July 2000. While operational results were acceptable during this time, inspection of bags in the summer of 2000 revealed some membrane damage to the fabric that appeared to be caused by electrical effects. Subsequently, extensive theoretical, bench-scale, and pilot-scale investigations were completed to find an approach to prevent bag damage without compromising AHPC performance. Results showed that the best bag protection and AHPC performance were achieved by using a perforated plate installed between the discharge electrodes and bags. This perforated-plate design was then installed in the 2.5-MW AHPC at Big Stone Power Plant in Big Stone City, South Dakota, and the AHPC was operated from March to June 2001. Results showed that the perforated-plate design solved the bag damage problem and offered even better AHPC performance than the previous design. All of the AHPC performance goals were met, including ultrahigh collection efficiency, high air-to-cloth ratio, reasonable pressure drop, and long bag-cleaning interval.

  14. High strength particulate ceramics

    DOE Patents [OSTI]

    Liles, Kenneth J. (Tuscaloosa, AL); Hoyer, Jesse L. (Tuscaloosa, AL); Mlynarski, Kenneth W. (Gambrills, MD)

    1991-01-01

    This invention relates to new and useful hard, dense, composite materials made from metallic nitrides such as titanium nitride when combined with aluminum oxide and aluminum nitride and a process comprising the steps of: (1) mixing constituent materials using kerosene as a mixing medium; (2) screening, settling, filtering, and washing the mixture in acetone; (3) filling and sealing said materials in a latex mold; (4) isostatically pressing the material into a compacted powder; and (5) sintering the compacted powder in a gas atmosphere at 1,850.degree. C. for two hours.

  15. DIESEL/HEAVY The diesel/heavy equipment certificate offers training in maintenance

    E-Print Network [OSTI]

    Ickert-Bond, Steffi

    DIESEL/HEAVY EQUIPMENT The diesel/heavy equipment certificate offers training in maintenance and repair of heavy equipment and trucks. Students will learn to work on electrical and air systems, diesel · Small Engines · Automotive Maintenance · Welding · Training for entry level heavy diesel equipment

  16. Criteria for calculating the efficiency of HEPA filters during and after design basis accidents

    SciTech Connect (OSTI)

    Bergman, W.; First, M.W.; Anderson, W.L.; Gilbert, H.; Jacox, J.W.

    1994-12-01

    We have reviewed the literature on the performance of high efficiency particulate air (HEPA) filters under normal and abnormal conditions to establish criteria for calculating the efficiency of HEPA filters in a DOE nonreactor nuclear facility during and after a Design Basis Accident (DBA). The literature review included the performance of new filters and parameters that may cause deterioration in the filter performance such as filter age, radiation, corrosive chemicals, seismic and rough handling, high temperature, moisture, particle clogging, high air flow and pressure pulses. The deterioration of the filter efficiency depends on the exposure parameters; in severe exposure conditions the filter will be structurally damaged and have a residual efficiency of 0%. Despite the many studies on HEPA filter performance under adverse conditions, there are large gaps and limitations in the data that introduce significant error in the estimates of HEPA filter efficiencies under DBA conditions. Because of this limitation, conservative values of filter efficiency were chosen when there was insufficient data.

  17. Optimization of Advanced Diesel Engine Combustion Strategies...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    7-11, 2010 -- Washington D.C. ace020reitz2010o.pdf More Documents & Publications Optimization of Advanced Diesel Engine Combustion Strategies Optimization of Advanced Diesel...

  18. Elastomer Compatibility Testing of Renewable Diesel Fuels

    SciTech Connect (OSTI)

    Frame, E.; McCormick, R. L.

    2005-11-01

    In this study, the integrity and performance of six elastomers were tested with ethanol-diesel and biodiesel fuel blends.

  19. Risk Assessment of Diesel-Fired

    E-Print Network [OSTI]

    Mlllet, Dylan B.

    Risk Assessment of Diesel-Fired Back-up Electric Generators Operating in California Prepared of the toxicity of various hazardous air pollutants in diesel emissions. Wayne Miller, the Director discussions on diesel back-up generators and, more broadly, the environmental health impacts of electricity

  20. An indirect sensing technique for diesel fuel quantity control. Technical progress report, October 1--December 31, 1998

    SciTech Connect (OSTI)

    MacCarley, C.A.

    1999-01-26

    Work has proceeded intensely with the objective of completing the commercial prototype system prior to the end of the contract period. At the time of this report, testing and refinement of the commercial version of the system has not been completed. During this reporting period, several major milestones were reached and many significant lessons were learned. These are described. The experimental retrofit system has achieved all performance objectives in engine dynamometer tests. The prototype commercial version of the system will begin demonstration service on the first of several Santa Maria Area Transit (SMAT) transit buses on February 1, 1999. The commercial system has been redesignated the Electronic Diesel Smoke Reduction System (EDSRS) replacing the original internal pseudonym ADSC. The focus has been narrowed to a retrofit product suitable for installation on existing mechanically-governed diesel engines. Included in this potential market are almost all diesel-powered passenger cars and light trucks manufactured prior to the introduction of the most recent clean diesel engines equipped with particulate traps and electronic controls. Also included are heavy-duty trucks, transit vehicles, school buses, and agricultural equipment. This system is intended to prevent existing diesel engines from overfueling to the point of visible particulate emissions (smoke), while allowing maximum smoke-limited torque under all operating conditions. The system employs a microcontroller and a specialized exhaust particulate emission sensor to regulate the maximum allowable fuel quantity via an adaptive throttle-limit map. This map specifies a maximum allowable throttle position as a function of engine speed, turbocharger boost pressure and engine coolant temperature. The throttle position limit is mechanized via a servo actuator inserted in the throttle cable leading to the injection pump.

  1. Clean Coal Diesel Demonstration Project

    SciTech Connect (OSTI)

    Robert Wilson

    2006-10-31

    A Clean Coal Diesel project was undertaken to demonstrate a new Clean Coal Technology that offers technical, economic and environmental advantages over conventional power generating methods. This innovative technology (developed to the prototype stage in an earlier DOE project completed in 1992) enables utilization of pre-processed clean coal fuel in large-bore, medium-speed, diesel engines. The diesel engines are conventional modern engines in many respects, except they are specially fitted with hardened parts to be compatible with the traces of abrasive ash in the coal-slurry fuel. Industrial and Municipal power generating applications in the 10 to 100 megawatt size range are the target applications. There are hundreds of such reciprocating engine power-plants operating throughout the world today on natural gas and/or heavy fuel oil.

  2. Technology development: HEPA filter service life test plan

    SciTech Connect (OSTI)

    Kirchner, K.N.; Cummings, K.G.; Leck, W.C.; Fretthold, J.K.

    1995-05-31

    Rocky Flats Environmental Technology Site (the Site) has approximately 10,000 High Efficiency Particulate Air (HEPA) Filters installed in a variety of filter plenums. These ventilation/filtration plenum systems are used to control the release of airborne particulate contaminates to the environment during normal operations and also during potential design-based accidents. The operational integrity of the HEPA filter plenums is essential to maintaining the margins of safety as required by building specific Final Safety Analysis Reports (FSARS) for protection of the public and environment. An Unreviewed Safety Question Determination (USQD), USDQ-RFP94.0615-ARS, was conducted in 1994 addressing the potential inadequacy of the safety envelope for Protected Area building HEPA plenums. While conducting this USQD, questions were raised concerning the maximum service life criteria for HEPA filters. Accident scenarios in existing FSARs identify conditions that could potentially cause plugging or damage of down stream HEPA filters as a result of impaction from failed filters. Additionally, available data indicates that HEPA filters experience structural degradation due to the effects of age. The Unresolved Safety Question (USQ) compensatory measures thus require testing and analysis of used HEPA filters in order to determine and implement service life criteria.

  3. Method of producing monolithic ceramic cross-flow filter

    DOE Patents [OSTI]

    Larsen, D.A.; Bacchi, D.P.; Connors, T.F.; Collins, E.L. III

    1998-02-10

    Ceramic filter of various configuration have been used to filter particulates from hot gases exhausted from coal-fired systems. Prior ceramic cross-flow filters have been favored over other types, but those previously have been assemblies of parts somehow fastened together and consequently subject often to distortion or delamination on exposure hot gas in normal use. The present new monolithic, seamless, cross-flow ceramic filters, being of one-piece construction, are not prone to such failure. Further, these new products are made by a novel casting process which involves the key steps of demolding the ceramic filter green body so that none of the fragile inner walls of the filter is cracked or broken. 2 figs.

  4. Method of producing monolithic ceramic cross-flow filter

    DOE Patents [OSTI]

    Larsen, David A. (Clifton Park, NY); Bacchi, David P. (Schenectady, NY); Connors, Timothy F. (Watervliet, NY); Collins, III, Edwin L. (Albany, NY)

    1998-01-01

    Ceramic filter of various configuration have been used to filter particulates from hot gases exhausted from coal-fired systems. Prior ceramic cross-flow filters have been favored over other types, but those previously horn have been assemblies of parts somehow fastened together and consequently subject often to distortion or delamination on exposure hot gas in normal use. The present new monolithic, seamless, cross-flow ceramic filters, being of one-piece construction, are not prone to such failure. Further, these new products are made by novel casting process which involves the key steps of demolding the ceramic filter green body so that none of the fragile inner walls of the filter is cracked or broken.

  5. Exhaust emission and fuel consumption of CNG/diesel fueled city buses calculated using a sample driving cycle

    SciTech Connect (OSTI)

    Ergeneman, M.; Sorusbay, C.; Goektan, A.G. [Technical Univ. of Istanbul (Turkey). Dept. of Mechanical Engineering

    1999-04-01

    In this study the reduction of pollutant emissions from city buses converted to dual fuel operation was investigated. Exhaust emission and fuel consumption maps were obtained under laboratory conditions for an engine converted to CNG/diesel fuel operation. These values are then used in the simulation model to predict the total exhaust emission and fuel consumption on a driving cycle evaluated from actual recordings. Calculations showed a significant decrease in particulate matter (PM) emissions as expected, while the total CO emissions minor changes have been observed. For dual fuel operation NO{sub x} emissions were kept at the same level as in pure diesel operation with retarded pilot injection. Fuel cost calculations showed a decrease up to 30% with current prices of diesel fuel and CNG.

  6. Clean Diesel Component Improvement Program

    SciTech Connect (OSTI)

    2005-06-30

    The research conducted in this program significantly increased the knowledge and understanding in the fields of plasma physics and chemistry in diesel exhaust, the performance and characteristics of multifunctional catalysts in diesel exhaust, and the complexities of controlling a combination of such systems to remove NOx. Initially this program was designed to use an in-line plasma system (know as a plasma assisted catalyst system or PAC) to convert NO {yields} NO{sub 2}, a more catalytically active form of nitrogen oxides, and to crack hydrocarbons (diesel fuel in particular) into active species. The NO{sub 2} and the cracked hydrocarbons were then flowed over an in-line ceramic NOx catalyst that removed NO{sub 2} from the diesel exhaust. Even though the PAC system performed well technically and was able to remove over 95% of NOx from diesel exhaust the plasma component proved not to be practical or commercially feasible. The lack of practical and commercial viability was due to high unit costs and lack of robustness. The plasma system and its function was replaced in the NOx removal process by a cracking reforming catalyst that converted diesel fuel to a highly active reductant for NOx over a downstream ceramic NOx catalyst. This system was designated the ceramic catalyst system (CCS). It was also determined that NO conversion to NO{sub 2} was not required to achieve high levels of NOx reduction over ceramic NOx catalyst if that catalyst was properly formulated and the cracking reforming produced a reductant optimized for that NOx catalyst formulation. This system has demonstrated 92% NOx reduction in a diesel exhaust slipstream and 65% NOx reduction from the full exhaust of a 165 hp diesel engine using the FTP cycle. Although this system needs additional development to be commercial, it is simple, cost effective (does not use precious metals), sulfur tolerant, operates at high space velocities, does not require a second fluid be supplied as a reductant, has low parasitic loss of 2-3% and achieves high levels of NOx reduction. This project benefits the public by providing a simple low-cost technology to remove NOx pollutants from the exhaust of almost any combustion source. The reduction of NOx emissions emitted into the troposphere provides well documented improvement in health for the majority of United States citizens. The emissions reduction produced by this technology helps remove the environmental constraints to economic growth.

  7. Diesel prices continue to decrease

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural GasNatural Gas Usage Form 2003(EIA) TheDieselDiesel

  8. Diesel prices continue to decrease

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural GasNatural Gas Usage Form 2003(EIA)Diesel pricesDiesel

  9. Diesel prices continue to decrease

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural GasNatural Gas Usage Form 2003(EIA)DieselDiesel prices

  10. Diesel prices continue to increase

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural GasNatural Gas Usage FormDiesel prices continue toDiesel

  11. Diesel prices continue to increase

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural GasNatural Gas Usage FormDiesel prices continueDiesel prices

  12. Diesel prices continue to increase

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural GasNatural Gas Usage FormDiesel prices continueDiesel

  13. Diesel prices continue to rise

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural GasNatural Gas Usage FormDiesel pricesDiesel prices

  14. Diesel prices up this week

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural GasNatural Gas UsageDiesel pricesDiesel prices top $4

  15. Biodiesel and Other Renewable Diesel Fuels

    SciTech Connect (OSTI)

    Not Available

    2006-11-01

    Present federal tax incentives apply to certain types of biomass-derived diesel fuels, which in energy policy and tax laws are described either as renewable diesel or biodiesel. To understand the distinctions between these diesel types it is necessary to understand the technologies used to produce them and the properties of the resulting products. This fact sheet contains definitions of renewable and biodiesel and discusses the processes used to convert biomass to diesel fuel and the properties of biodiesel and renewable diesel fuels.

  16. Physical properties of bio-diesel & Implications for use of bio-diesel in diesel engines

    SciTech Connect (OSTI)

    Chakravarthy, Veerathu K [ORNL; McFarlane, Joanna [ORNL; Daw, C Stuart [ORNL; Ra, Youngchul [ORNL; Griffin, Jelani K [ORNL; Reitz, Rolf [University of Wisconsin

    2008-01-01

    In this study we identify components of a typical biodiesel fuel and estimate both their individual and mixed thermo-physical and transport properties. We then use the estimated mixture properties in computational simulations to gauge the extent to which combustion is modified when biodiesel is substituted for conventional diesel fuel. Our simulation studies included both regular diesel combustion (DI) and premixed charge compression ignition (PCCI). Preliminary results indicate that biodiesel ignition is significantly delayed due to slower liquid evaporation, with the effects being more pronounced for DI than PCCI. The lower vapor pressure and higher liquid heat capacity of biodiesel are two key contributors to this slower rate of evaporation. Other physical properties are more similar between the two fuels, and their impacts are not clearly evident in the present study. Future studies of diesel combustion sensitivity to both physical and chemical properties of biodiesel are suggested.

  17. Fail save shut off valve for filtering systems employing candle filters

    DOE Patents [OSTI]

    VanOsdol, John (Fairmont, WV)

    2006-01-03

    The invention relates to an apparatus that acts as a fail save shut off valve. More specifically, the invention relates to a fail save shut off valve that allows fluid flow during normal operational conditions, but prevents the flow of fluids in the event of system failure upstream that causes over-pressurization. The present invention is particularly well suited for use in conjunction with hot gas filtering systems, which utilize ceramic candle filters. Used in such a hot gas system the present invention stops the flow of hot gas and prevents any particulate laden gas from entering the clean side of the system.

  18. Fail Save Shut Off Valve for Filtering Systems Employing Candle Filters

    DOE Patents [OSTI]

    VanOsdol, John

    2006-01-03

    The invention relates to an apparatus that acts as a fail save shut off valve. More specifically, the invention relates to a fail save shut off valve that allows fluid flow during normal operational conditions, but prevents the flow of fluids in the event of system failure upstream that causes over-pressurization. The present invention is particularly well suited for use in conjunction with hot gas filtering systems, which utilize ceramic candle filters. Used in such a hot gas system the present invention stops the flow of hot gas and prevents any particulate laden gas from entering the clean side of the system.

  19. Progress report Idaho on-road test with vegetable oil as a diesel fuel

    SciTech Connect (OSTI)

    Reece, D.; Peterson, C.L.

    1993-12-31

    Biodiesel is among many biofuels being considered in the US for alternative fueled vehicles. The use of this fuel can reduce US dependence on imported oil and help improve air quality by reducing gaseous and particulate emissions. Researchers at the Department of Agricultural Engineering at the University of Idaho have pioneered rapeseed oil as a diesel fuel substitute. Although UI has conducted many laboratory and tractor tests using raw rapeseed oil and rape methyl ester (RME), these fuels have not been proven viable for on-road applications. A biodiesel demonstration project has been launched to show the use of biodiesel in on-road vehicles. Two diesel powered pickups are being tested on 20 percent biodiesel and 80 percent diesel. One is a Dodge 3/4-ton pickup powered by a Cummins 5.9 liter turbocharged and intercooled engine. This engine is direct injected and is being run on 20 percent RME and 80 percent diesel. The other pickup is a Ford, powered by a Navistar 7.3 liter, naturally aspirated engine. This engine has a precombustion chamber and is being operated on 20 percent raw rapeseed oil and 80 percent diesel. The engines themselves are unmodified, but modifications have been made to the vehicles for the convenience of the test. In order to give maximum vehicle range, fuel mixing is done on-board. Two tanks are provided, one for the diesel and one for the biodiesel. Electric fuel pumps supply fuel to a combining chamber for correct proportioning. The biodiesel fuel tanks are heated with a heat exchanger which utilizes engine coolant circulation.

  20. Method and apparatus for a combination moving bed thermal treatment reactor and moving bed filter

    DOE Patents [OSTI]

    Badger, Phillip C.; Dunn, Jr., Kenneth J.

    2015-09-01

    A moving bed gasification/thermal treatment reactor includes a geometry in which moving bed reactor particles serve as both a moving bed filter and a heat carrier to provide thermal energy for thermal treatment reactions, such that the moving bed filter and the heat carrier are one and the same to remove solid particulates or droplets generated by thermal treatment processes or injected into the moving bed filter from other sources.