National Library of Energy BETA

Sample records for octane gasoline alkylation

  1. High-Octane Fuel from Refinery Exhaust Gas: Upgrading Refinery Off-Gas to High-Octane Alkylate

    SciTech Connect (OSTI)

    2009-12-01

    Broad Funding Opportunity Announcement Project: Exelus is developing a method to convert olefins from oil refinery exhaust gas into alkylate, a clean-burning, high-octane component of gasoline. Traditionally, olefins must be separated from exhaust before they can be converted into another source of useful fuel. Exelus process uses catalysts that convert the olefin to alkylate without first separating it from the exhaust. The ability to turn up to 50% of exhaust directly into gasoline blends could result in an additional 46 million gallons of gasoline in the U.S. each year.

  2. Methyl aryl ethers from coal liquids as gasoline extenders and octane improvers

    SciTech Connect (OSTI)

    Singerman, G.M.

    1980-11-01

    A mixture of methyl aryl ethers derived from the phenols present in direct liquefaction coal liquids shows considerable promise as a gasoline blending agent and octane improver. The mixture of methyl aryl ethers was blended at five volume percent with a commercial, unleaded gasoline. The properties and performance of the blend in a variety of laboratory and automotive tests is reported. The tests show that the mixture of methyl aryl ethers improves gasoline octane without degrading other gasoline properties.

  3. Method for determining the octane rating of gasoline samples by observing corresponding acoustic resonances therein

    DOE Patents [OSTI]

    Sinha, Dipen N.; Anthony, Brian W.

    1997-01-01

    A method for determining the octane rating of gasoline samples by observing corresponding acoustic resonances therein. A direct correlation between the octane rating of gasoline and the frequency of corresponding acoustic resonances therein has been experimentally observed. Therefore, the octane rating of a gasoline sample can be directly determined through speed of sound measurements instead of by the cumbersome process of quantifying the knocking quality of the gasoline. Various receptacle geometries and construction materials may be employed. Moreover, it is anticipated that the measurements can be performed on flowing samples in pipes, thereby rendering the present method useful in refineries and distilleries.

  4. Method for determining the octane rating of gasoline samples by observing corresponding acoustic resonances therein

    DOE Patents [OSTI]

    Sinha, D.N.; Anthony, B.W.

    1997-02-25

    A method is described for determining the octane rating of gasoline samples by observing corresponding acoustic resonances therein. A direct correlation between the octane rating of gasoline and the frequency of corresponding acoustic resonances therein has been experimentally observed. Therefore, the octane rating of a gasoline sample can be directly determined through speed of sound measurements instead of by the cumbersome process of quantifying the knocking quality of the gasoline. Various receptacle geometries and construction materials may be employed. Moreover, it is anticipated that the measurements can be performed on flowing samples in pipes, thereby rendering the present method useful in refineries and distilleries. 3 figs.

  5. 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).

  6. Proton NMR analysis of octane number for motor gasoline: Part IV

    SciTech Connect (OSTI)

    Ichikawa, M.; Nonaka, N.; Amano, H.; Takada, I.; Ishimori, S.; Andoh, H.; Kumamoto, K.

    1992-08-01

    Software for predicting the octane number of motor gasoline by proton magnetic resonance (PMR) spectrometry has been formulated. At the same time, a method has been studied to predict the composition of gasoline (in terms of the contents of paraffin, olefin, and aromatic compounds). The formulated program was evaluated by using it to predict the octane numbers of 31 samples of marketed summer gasoline (including 16 regular and 15 premium products), whose octane numbers and compositions were identified according to the ASTM standards. Also, the relationship between the PMR spectrum and gasoline composition was subjected to linear regression analysis by using the 31 samples whose octane numbers were calculated, and the appropriateness of the resultant regression equations was assessed. This report concerns the results of the study in which the octane numbers of the 31 samples were satisfactorily predicted by the formulated program and useful linear regression equation were obtained for the prediction of the composition of gasoline. 9 refs., 9 figs., 3 tabs.

  7. Fewer Steps to Higher Octane Gasoline in Petroleum Refining | U.S. DOE

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Office of Science (SC) Fewer Steps to Higher Octane Gasoline in Petroleum Refining Basic Energy Sciences (BES) BES Home About Research Facilities Science Highlights Benefits of BES Funding Opportunities Basic Energy Sciences Advisory Committee (BESAC) Community Resources Contact Information Basic Energy Sciences U.S. Department of Energy SC-22/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3081 F: (301) 903-6594 E: Email Us More Information » 07.01.13 Fewer

  8. Raman Scattering Sensor for Control of the Acid Alkylation Process in Gasoline Production

    SciTech Connect (OSTI)

    Uibel, Rory, H.; Smith, Lee M.; Benner, Robert, E.

    2006-04-19

    Gasoline refineries utilize a process called acid alkylation to increase the octane rating of blended gasoline, and this is the single most expensive process in the refinery. For process efficiency and safety reasons, the sulfuric acid can only be used while it is in the concentration range of 98 to 86 %. The conventional technique to monitor the acid concentration is time consuming and is typically conducted only a few times per day. This results in running higher acid concentrations than they would like to ensure that the process proceeds uninterrupted. Maintaining an excessively high acid concentration costs the refineries millions of dollars each year. Using SBIR funding, Process Instruments Inc. has developed an inline sensor for real time monitoring of acid concentrations in gasoline refinery alkylation units. Real time data was then collected over time from the instrument and its responses were matched up with the laboratory analysis. A model was then developed to correlate the laboratory acid values to the Raman signal that is transmitted back to the instrument from the process stream. The instrument was then used to demonstrate that it could create real-time predictions of the acid concentrations. The results from this test showed that the instrument could accurately predict the acid concentrations to within ~0.15% acid strength, and this level of prediction proved to be similar or better then the laboratory analysis. By utilizing a sensor for process monitoring the most economic acid concentrations can be maintained. A single smaller refinery (50,000 barrels/day) estimates that they should save over $120,000/year, with larger refineries saving considerably more.

  9. Supply Chain Sustainability Analysis of Indirect Liquefaction of Blended Biomass to Produce High Octane Gasoline

    SciTech Connect (OSTI)

    Cai, Hao; Canter, Christina E.; Dunn, Jennifer B.; Tan, Eric; Biddy, Mary; Talmadge, Michael; Hartley, Damon S.; Snowden-Swan, Lesley

    2015-09-01

    The Department of Energy’s (DOE) Bioenergy Technologies Office (BETO) aims at developing and deploying technologies to transform renewable biomass resources into commercially viable, high-performance biofuels, bioproducts and biopower through public and private partnerships (DOE, 2015). BETO also performs a supply chain sustainability analysis (SCSA). This report describes the SCSA of the production of renewable high octane gasoline (HOG) via indirect liquefaction (IDL) of lignocellulosic biomass. This SCSA was developed for the 2017 design case for feedstock logistics (INL, 2014) and for the 2022 target case for HOG production via IDL (Tan et al., 2015). The design includes advancements that are likely and targeted to be achieved by 2017 for the feedstock logistics and 2022 for the IDL conversion process. The 2017 design case for feedstock logistics demonstrated a delivered feedstock cost of $80 per dry U.S. short ton by the year 2017 (INL, 2014). The 2022 design case for the conversion process, as modeled in Tan et al. (2015), uses the feedstock 2017 design case blend of biomass feedstocks consisting of pulpwood, wood residue, switchgrass, and construction and demolition waste (C&D) with performance properties consistent with a sole woody feedstock type (e.g., pine or poplar). The HOG SCSA case considers the 2017 feedstock design case (the blend) as well as individual feedstock cases separately as alternative scenarios when the feedstock blend ratio varies as a result of a change in feedstock availability. These scenarios could be viewed as bounding SCSA results because of distinctive requirements for energy and chemical inputs for the production and logistics of different components of the blend feedstocks.

  10. Conceptual process design and economics for the production of high-octane gasoline blendstock via indirect liquefaction of biomass through methanol/dimethyl ether intermediates

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

    Tan, Eric C. D.; Talmadge, Michael; Dutta, Abhijit; Hensley, Jesse; Snowden-Swan, Lesley J.; Humbird, David; Schaidle, Joshua; Biddy, Mary

    2015-10-28

    This paper describes in detail one potential conversion process for the production of high-octane gasoline blendstock via indirect liquefaction of biomass. The processing steps of this pathway include the conversion of biomass to synthesis gas via indirect gasification, gas clean-up via reforming of tars and other hydrocarbons, catalytic conversion of syngas to methanol, methanol dehydration to dimethyl ether (DME), and the homologation of DME over a zeolite catalyst to high-octane gasoline-range hydrocarbon products. The current process configuration has similarities to conventional methanol-to-gasoline (MTG) technologies, but there are key distinctions, specifically regarding the product slate, catalysts, and reactor conditions. A techno-economicmore » analysis is performed to investigate the production of high-octane gasoline blendstock. The design features a processing daily capacity of 2000 tonnes (2205 short tons) of dry biomass. The process yields 271 liters of liquid fuel per dry tonne of biomass (65 gal/dry ton), for an annual fuel production rate of 178 million liters (47 MM gal) at 90% on-stream time. The estimated total capital investment for an nth-plant is $438 million. The resulting minimum fuel selling price (MFSP) is $0.86 per liter or $3.25 per gallon in 2011 US dollars. A rigorous sensitivity analysis captures uncertainties in costs and plant performance. Sustainability metrics for the conversion process are quantified and assessed. The potential premium value of the high-octane gasoline blendstock is examined and found to be at least as competitive as fossil-derived blendstocks. A simple blending strategy is proposed to demonstrate the potential for blending the biomass-derived blendstock with petroleum-derived intermediates. Published 2015. This article is a U.S. Government work and is in the public domain in the USA. Biofuels, Bioproducts and Biorefining published by Society of Industrial Chemistry and John Wiley & Sons Ltd.« less

  11. Conceptual process design and economics for the production of high-octane gasoline blendstock via indirect liquefaction of biomass through methanol/dimethyl ether intermediates

    SciTech Connect (OSTI)

    Tan, Eric C. D.; Talmadge, Michael; Dutta, Abhijit; Hensley, Jesse; Snowden-Swan, Lesley J.; Humbird, David; Schaidle, Joshua; Biddy, Mary

    2015-10-28

    This paper describes in detail one potential conversion process for the production of high-octane gasoline blendstock via indirect liquefaction of biomass. The processing steps of this pathway include the conversion of biomass to synthesis gas via indirect gasification, gas clean-up via reforming of tars and other hydrocarbons, catalytic conversion of syngas to methanol, methanol dehydration to dimethyl ether (DME), and the homologation of DME over a zeolite catalyst to high-octane gasoline-range hydrocarbon products. The current process configuration has similarities to conventional methanol-to-gasoline (MTG) technologies, but there are key distinctions, specifically regarding the product slate, catalysts, and reactor conditions. A techno-economic analysis is performed to investigate the production of high-octane gasoline blendstock. The design features a processing daily capacity of 2000 tonnes (2205 short tons) of dry biomass. The process yields 271 liters of liquid fuel per dry tonne of biomass (65 gal/dry ton), for an annual fuel production rate of 178 million liters (47 MM gal) at 90% on-stream time. The estimated total capital investment for an nth-plant is $438 million. The resulting minimum fuel selling price (MFSP) is $0.86 per liter or $3.25 per gallon in 2011 US dollars. A rigorous sensitivity analysis captures uncertainties in costs and plant performance. Sustainability metrics for the conversion process are quantified and assessed. The potential premium value of the high-octane gasoline blendstock is examined and found to be at least as competitive as fossil-derived blendstocks. A simple blending strategy is proposed to demonstrate the potential for blending the biomass-derived blendstock with petroleum-derived intermediates. Published 2015. This article is a U.S. Government work and is in the public domain in the USA. Biofuels, Bioproducts and Biorefining published by Society of Industrial Chemistry and John Wiley & Sons Ltd.

  12. Process Design and Economics for the Conversion of Lignocellulosic Biomass to High Octane Gasoline: Thermochemical Research Pathway with Indirect Gasification and Methanol Intermediate

    SciTech Connect (OSTI)

    Tan, Eric; Talmadge, M.; Dutta, Abhijit; Hensley, Jesse; Schaidle, Josh; Biddy, Mary J.; Humbird, David; Snowden-Swan, Lesley J.; Ross, Jeff; Sexton, Danielle; Yap, Raymond; Lukas, John

    2015-03-01

    The U.S. Department of Energy (DOE) promotes research for enabling cost-competitive liquid fuels production from lignocellulosic biomass feedstocks. The research is geared to advance the state of technology (SOT) of biomass feedstock supply and logistics, conversion, and overall system sustainability. As part of their involvement in this program, the National Renewable Energy Laboratory (NREL) and the Pacific Northwest National Laboratory (PNNL) investigate the economics of conversion pathways through the development of conceptual biorefinery process models. This report describes in detail one potential conversion process for the production of high octane gasoline blendstock via indirect liquefaction (IDL). The steps involve the conversion of biomass to syngas via indirect gasification followed by gas cleanup and catalytic syngas conversion to a methanol intermediate; methanol is then further catalytically converted to high octane hydrocarbons. The conversion process model leverages technologies previously advanced by research funded by the Bioenergy Technologies Office (BETO) and demonstrated in 2012 with the production of mixed alcohols from biomass. Biomass-derived syngas cleanup via tar and hydrocarbons reforming was one of the key technology advancements as part of that research. The process described in this report evaluates a new technology area with downstream utilization of clean biomass-syngas for the production of high octane hydrocarbon products through a methanol intermediate, i.e., dehydration of methanol to dimethyl ether (DME) which subsequently undergoes homologation to high octane hydrocarbon products.

  13. A historical analysis of the co-evolution of gasoline octane number and spark-ignition engines

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

    Splitter, Derek A.; Pawlowski, Alex E.; Wagner, Robert M.

    2016-01-06

    In our work, the authors reviewed engine, vehicle, and fuel data since 1925 to examine the historical and recent coupling of compression ratio and fuel antiknock properties (i.e., octane number) in the U.S. light-duty vehicle market. The analysis identified historical timeframes, trends, and illustrated how three factors: consumer preferences, technical capabilities, and regulatory legislation, affect personal mobility. Data showed that throughout history these three factors have a complex and time sensitive interplay. Long term trends in the data were identified where interaction and evolution between all three factors was observed. Transportation efficiency per unit power (gal/ton-mi/hp) was found to bemore » a good metric to integrate technical, societal, and regulatory effects into the evolutional pathway of personal mobility. From this framework, discussions of future evolutionary changes to personal mobility are also presented.« less

  14. FCC LPG olefinicity and branching enhanced by octane catalysts

    SciTech Connect (OSTI)

    Keyworth, D.A.; Reid, T.A.; Kreider, K.R.; Yatsu, C.A.

    1989-05-29

    Refiners are increasingly recognizing the downstream opportunities for fluid catalytic cracking LPG olefins for the production of methyl tertiary butyl ether (MTBE), ethyl tertiary butyl ether (ETBE, if the ethanol subsidy is extended to the production of ETBE), and as petrochemical feedstocks. Some of new gasoline FCC octane-enhancing catalysts can support those opportunities because their low non-framework alumina (low NFA) preserve both LPG olefinicity and promote branching of the LPG streams from the FCCU. The combined effect results in more isobutane for alkylate feed, more propylene in the propane/propylene stream, and more isobutene - which makes the addition of an MTBE unit very enticing.

  15. Process Design and Economics for the Conversion of Lignocellulosic Biomass to Hydrocarbons via Indirect Liquefaction. Thermochemical Research Pathway to High-Octane Gasoline Blendstock Through Methanol/Dimethyl Ether Intermediates

    SciTech Connect (OSTI)

    Tan, Eric C. D.; Talmadge, Michael; Dutta, Abhijit; Hensley, Jesse; Schaidle, Josh; Biddy, Mary; Humbird, David; Snowden-Swan, Lesley J.; Ross, Jeff; Sexton, Danielle; Yap, Raymond; Lukas, John

    2015-03-01

    This report was developed as part of the U.S. Department of Energy’s Bioenergy Technologies Office’s (BETO’s) efforts to enable the development of technologies for the production of infrastructure-compatible, cost-competitive liquid hydrocarbon fuels from lignocellulosic biomass feedstocks. The research funded by BETO is designed to advance the state of technology of biomass feedstock supply and logistics, conversion, and overall system sustainability. It is expected that these research improvements will be made within the 2022 timeframe. As part of their involvement in this research and development effort, the National Renewable Energy Laboratory and the Pacific Northwest National Laboratory investigate the economics of conversion pathways through the development of conceptual biorefinery process models and techno-economic analysis models. This report describes in detail one potential conversion process for the production of high-octane gasoline blendstock via indirect liquefaction of biomass. The processing steps of this pathway include the conversion of biomass to synthesis gas or syngas via indirect gasification, gas cleanup, catalytic conversion of syngas to methanol intermediate, methanol dehydration to dimethyl ether (DME), and catalytic conversion of DME to high-octane, gasoline-range hydrocarbon blendstock product. The conversion process configuration leverages technologies previously advanced by research funded by BETO and demonstrated in 2012 with the production of mixed alcohols from biomass. Biomass-derived syngas cleanup via reforming of tars and other hydrocarbons is one of the key technology advancements realized as part of this prior research and 2012 demonstrations. The process described in this report evaluates a new technology area for the downstream utilization of clean biomass-derived syngas for the production of high-octane hydrocarbon products through methanol and DME intermediates. In this process, methanol undergoes dehydration to DME, which is subsequently converted via homologation reactions to high-octane, gasoline-range hydrocarbon products.

  16. Alkylate

    U.S. Energy Information Administration (EIA) Indexed Site

    Day) Product: Alkylate Aromatics Asphalt & Road Oil Isomers Isobutane Isopentane & Isohexane Isooctane Lubricants Marketable Petroleum Coke Hydrogen Sulfur Period: Annual (as of January 1) Download Series History Download Series History Definitions, Sources & Notes Definitions, Sources & Notes Show Data By: Product Area 2010 2011 2012 2013 2014 2015 View History U.S. 1,248,514 1,262,443 1,246,875 1,269,361 1,266,352 1,267,246 1982-2015 PAD District 1 95,500 108,629 79,429 91,429

  17. The Impact of Low Octane Hydrocarbon Blending Streams on "E85...

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

    High Octane Fuels Can Make Better Use of Renewable Transportation Fuels Making Better Use of Ethanol as a Transportation Fuel With "Renewable Super Premium" Gasoline-Like Fuel ...

  18. Motor gasolines, summer 1985

    SciTech Connect (OSTI)

    Dickson, C.L.; Woodward, P.W.

    1986-06-01

    Samples for this report were collected from service stations throughout the country and were analyzed in laboratories of various refiners, motor manufacturers, chemical companies, and research institutes. Analytical data for the 1571 motor gasoline and 206 motor gasoline/alcohol blend samples were submitted to the National Institute for Petroleum and Energy Research (NIPER), Bartlesville, Oklahoma, for reporting. This work is jointly funded by the American Petroleum Institute (API) and the United States Department of Energy (DOE), Bartlesville Project Office (DOE cooperative agreement No. FC22-83FE60149). The data are representative of the products of 62 marketers, large and small, which manufacture and supply gasoline. They are tabulated by groups according to brands (unlabeled) and grades for 17 marketing districts into which the country is divided. A map shows the marketing areas, districts, and sampling locations. The report includes trend charts of selected properties of motor fuels over the last twenty-five years. Twelve octane distribution graphs for leaded and unleaded grades of gasoline are presented for areas 1, 2, 3, and 4. The average antiknock (octane) index (R + M)/2 of gasoline sold in the United States during June, July, and August 1985 was 87.4 for unleaded below 90.0, 91.7 for unleaded 90.0 and above, and 88.8 for leaded below 93.0 grades of gasoline. Analyses of motor gasoline containing various alcohols are reported in separate tables beginning with this report. The average antiknock (octane) index (R + M)/2 of gasoline containing alcohols was 88.6 for unleaded below 90.0, 91.4 for unleaded 90.0 and above, and 90.2 for leaded below 93.0 grades of gasoline. 16 figs., 8 tabs.

  19. Motor gasolines, summer 1983

    SciTech Connect (OSTI)

    Shelton, E.M.

    1984-02-01

    The samples were collected from service stations throughout the country and were analyzed in the laboratories of various refiners, motor manufacturers, chemical companies, and research institutes. The analytical data for 1583 samples of motor gasoline, were submitted to the National Institute for Petroleum and Energy Research, Bartlesville, Oklahoma for study, necessary calculations, and compilation under a cooperative agreement between the National Institute for Petroleum and Energy Research (NIPER) and the American Petroleum Institute (API). They represent the products of 48 companies, large and small, which manufacture and supply gasoline. These data are tabulated by groups according to brands (unlabeled) and grades for 17 marketing districts into which the country is divided. A map included in this report, shows marketing areas, districts and sampling locations. The report also includes charts indicating the trends of selected properties of motor fuels since 1959. Sixteen octane distribution percent charts for areas 1, 2, 3, and 4 for unleaded antiknock index (R+M)/2 below 90.0, unleaded antiknock index (R+M)/2 90.0 and above, and leaded antiknock index (R+M)/2 below 93.0 grades of gasoline are presented in this report. The antiknock (octane) index (R+M)/2 averages of gasoline sold in this country were 87.5 for unleaded below 90.0, 91.4 for unleaded 90.0 and above, and 89.0 for leaded below 93.0 grades of gasoline. 16 figures, 5 tables.

  20. Motor gasolines, Summer 1982

    SciTech Connect (OSTI)

    Shelton, E.M.

    1983-03-01

    The samples were collected from service stations throughout the country and were analyzed in the laboratories of various refiners, motor manufacturers, and chemical companies. The analytical data for 796 samples of motor gasoline, were submitted to the Bartlesville Energy Technology Center for study, necessary calculations, and compilation under a cooperative agreement between the Bartlesville Energy Technology Center (BETC) and the American Petroleum Institute (API). They represent the products of 22 companies, large and small, which manufacture and supply gasoline. These data are tabulated by groups according to brands (unlabeled) and grades for 17 marketing districts into which the country is divided. A map included in this report, shows marketing areas, districts and sampling locations. The report also includes charts indicating the trends of selected properties of motor fuels since 1959. Sixteen octane distribution percent charts for areas 1, 2, 3, and 4 for unleaded antiknock index (R + M)/2 below 90.0, unleaded antiknock index (R + M)/2 90.0 and above, leaded antiknock index (R + M)/2 below 93.0, and leaded antiknock index (R + M)/2 93.0 and above grades of gasoline are presented in this report. The antiknock (octane) index (R + M)/2 averages of gasoline sold in this country were 87.3 for unleaded below 90.0, 91.7 for unleaded 90.0 and above, 89.0 for leaded below 93.0, and no data in this report for 93.0 and above grades of leaded gasoline.

  1. EIA-878 Motor Gasoline Price Survey - Reference Guide

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Price Survey (EIA-878), prices are collected for the following gasoline grades as defined by octane rating and ethanol content (ranging from no ethanol through up to 10% ethanol). ...

  2. Novel anisole mixture and gasoline containing the same

    DOE Patents [OSTI]

    Singerman, Gary M.

    1982-01-26

    A novel anisole mixture containing anisole and a mixture of alkyl anisoles and liquid hydrocarbon fuels containing said novel anisole mixture in an amount sufficient to increase the octane number of said liquid fuel composition.

  3. CRC program for quantifying performance of knock-sensor-equipped vehicles with varying octane level

    SciTech Connect (OSTI)

    Not Available

    1990-08-01

    A pilot study was conducted under the auspices of the Coordinating Research Council, Inc. (CRC) to assess the potential effects of gasoline octane quality on acceleration performance, fuel economy and driveability in vehicles equipped with electronic spark control systems (knock sensors). Fourteen vehicles were tested by five participating laboratories on CRC unleaded reference fuels of varying octane quality (78 to 104 RON). The test vehicles included nine naturally-aspirated and five turbocharged models. The results showed that acceleration performance was the parameter most sensitive to octane quality changes, particularly in the turbocharged models.

  4. The Impact of Low Octane Hydrocarbon Blending Streams on "E85" Engine

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

    Optimization | Department of Energy The Impact of Low Octane Hydrocarbon Blending Streams on "E85" Engine Optimization The Impact of Low Octane Hydrocarbon Blending Streams on "E85" Engine Optimization PDF icon deer12_szybist.pdf More Documents & Publications High Octane Fuels Can Make Better Use of Renewable Transportation Fuels Making Better Use of Ethanol as a Transportation Fuel With "Renewable Super Premium" Gasoline-Like Fuel Effects on Advanced

  5. An Experimental Investigation of Low Octane Gasoline in Diesel Engines

    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.

  6. An Experimental Investigation of Low Octane Gasoline in Diesel...

    Broader source: Energy.gov (indexed) [DOE]

    Enable Low Temperature Combustion High-Efficiency, Ultra-Low Emission Combustion in a Heavy-Duty Engine via Fuel ... of Two-Stage Combustion in Low-Emissions Diesel Engines

  7. Effects of High Octane Ethanol Blends on Four Legacy Flex-Fuel Vehicles, and a Turbocharged GDI Vehicle

    SciTech Connect (OSTI)

    Thomas, John F; West, Brian H; Huff, Shean P

    2015-03-01

    The U.S. Department of Energy (DOE) is supporting engine and vehicle research to investigate the potential of high-octane fuels to improve fuel economy. Ethanol has very high research octane number (RON) and heat of vaporization (HoV), properties that make it an excellent spark ignition engine fuel. The prospects of increasing both the ethanol content and the octane number of the gasoline pool has the potential to enable improved fuel economy in future vehicles with downsized, downsped engines. This report describes a small study to explore the potential performance benefits of high octane ethanol blends in the legacy fleet. There are over 17 million flex-fuel vehicles (FFVs) on the road today in the United States, vehicles capable of using any fuel from E0 to E85. If a future high-octane blend for dedicated vehicles is on the horizon, the nation is faced with the classic chicken-and-egg dilemma. If today’s FFVs can see a performance advantage with a high octane ethanol blend such as E25 or E30, then perhaps consumer demand for this fuel can serve as a bridge to future dedicated vehicles. Experiments were performed with four FFVs using a 10% ethanol fuel (E10) with 88 pump octane, and a market gasoline blended with ethanol to make a 30% by volume ethanol fuel (E30) with 94 pump octane. The research octane numbers were 92.4 for the E10 fuel and 100.7 for the E30 fuel. Two vehicles had gasoline direct injected (GDI) engines, and two featured port fuel injection (PFI). Significant wide open throttle (WOT) performance improvements were measured for three of the four FFVs, with one vehicle showing no change. Additionally, a conventional (non-FFV) vehicle with a small turbocharged direct-injected engine was tested with a regular grade of gasoline with no ethanol (E0) and a splash blend of this same fuel with 15% ethanol by volume (E15). RON was increased from 90.7 for the E0 to 97.8 for the E15 blend. Significant wide open throttle and thermal efficiency performance improvement was measured for this vehicle, which achieved near volumetric fuel economy parity on the aggressive US06 drive cycle, demonstrating the potential for improved fuel economy in forthcoming downsized, downsped engines with high-octane fuels.

  8. Trends in motor gasolines: 1942-1981

    SciTech Connect (OSTI)

    Shelton, E M; Whisman, M L; Woodward, P W

    1982-06-01

    Trends in motor gasolines for the years of 1942 through 1981 have been evaluated based upon data contained in surveys that have been prepared and published by the Bartlesville Energy Technology Center (BETC). These surveys have been published twice annually since 1935 describing the properties of motor gasolines from throughout the country. The surveys have been conducted in cooperation with the American Petroleum Institute (API) since 1948. Various companies from throughout the country obtain samples from retail outlets, analyze the samples by the American Society for Testing and Materials (ASTM) procedures, and report data to the Bartlesville center for compilation, tabulation, calculation, analysis and publication. A typical motor gasoline report covers 2400 samples from service stations throughout the country representing some 48 companies that manufacture and supply gasoline. The reports include trend charts, octane plots, and tables of test results from about a dozen different tests. From these data in 77 semiannual surveys, a summary report has thus been assembled that shows trends in motor gasolines throughout the entire era of winter 1942 to 1943 to the present. Trends of physical properties including octane numbers, antiknock ratings, distillation temperatures, Reid vapor pressure, sulfur and lead content are tabulated, plotted and discussed in the current report. Also included are trend effects of technological advances and the interactions of engine design, societal and political events and prices upon motor gasoline evolution during the 40 year period.

  9. MTBE, Oxygenates, and Motor Gasoline (Released in the STEO October 1999)

    Reports and Publications (EIA)

    1999-01-01

    The blending of methyl tertiary butyl ether (MTBE) into motor gasoline has increased dramatically since it was first produced 20 years ago. MTBE usage grew in the early 1980's in response to octane demand resulting initially from the phaseout of lead from gasoline and later from rising demand for premium gasoline. The oxygenated gasoline program stimulated an increase in MTBE production between 1990 and 1994. MTBE demand increased from 83,000 in 1990 to 161,000 barrels per day in 1994. The reformulated gasoline (RFG) program provided a further boost to oxygenate blending. The MTBE contained in motor gasoline increased to 269,000 barrels per day by 1997.

  10. Solubilities of toluene and n-octane in aqueous protosurfactant and surfactant solutions

    SciTech Connect (OSTI)

    Ho, P.C.

    1985-01-01

    The solubilities of toluene and n-octane in aqueous protosurfactant and surfactant solutins were determined at 25/sup 0/C. The protosurfactants studied are sodium salts of cyclohexanecarboxylic acid, 2,5-diisopropylbenzenesulfonic acid, and 3,5-diisopropyisalicylic acid. Each of them has six alkyl carbons (S /SUB AC/ =6) and does not form micelles in water. The two micelle-forming surfactants used are sodium n-hexanoate with six alkyl carbons (S /SUB AC/ =6) and sodium n-octanoate with eight alkyl carbons (S /SUB AC/ =8). In three-component systems of toluene or n-octane with water and organic salt (either protosurfactant or surfactant), the solubility of the hydrocarbon in the aqueous phase increases as the number of alkyl carbons of the organic salt and as the aqueous concentration of the organic salt increases. However, in this study we found that sodium 3,5-diisopropyisalicylate causes much more pronounced increases in hydrocarbon solubility than these two surfactants. Sodium 2,5-diisopropylbenzenesulfonate, although not as effective in solubilization as the salicylate, has much stronger hydrotropic properties for hydrocarbons than either of these two surfactants. Sodium cyclohexanoate, with a compact arrangement of the six alkyl carbons, shows a higher hydrotropic effect than sodium n-hexanoate.

  11. Bio Octane Energias Renov veis | Open Energy Information

    Open Energy Info (EERE)

    Octane Energias Renov veis Jump to: navigation, search Name: Bio-Octane Energias Renovveis Place: Minas Gerais, Brazil Product: Brazil-based biodiesel producer, located in the...

  12. The Impact of Low Octane Hydrocarbon Blending Streams on Ethanol Engine Optimization

    SciTech Connect (OSTI)

    Szybist, James P; West, Brian H

    2013-01-01

    Ethanol is a very attractive fuel from an end-use perspective because it has a high chemical octane number and a high latent heat of vaporization. When an engine is optimized to take advantage of these fuel properties, both efficiency and power can be increased through higher compression ratio, direct fuel injection, higher levels of boost, and a reduced need for enrichment to mitigate knock or protect the engine and aftertreatment system from overheating. The ASTM D5798 specification for high level ethanol blends, commonly called E85, underwent a major revision in 2011. The minimum ethanol content was revised downward from 68 vol% to 51 vol%, which combined with the use of low octane blending streams such as natural gasoline introduces the possibility of a lower octane E85 fuel. While this fuel is suitable for current ethanol tolerant flex fuel vehicles, this study experimentally examines whether engines can still be aggressively optimized for the resultant fuel from the revised ASTM D5798 specification. The performance of six ethanol fuel blends, ranging from 51-85% ethanol, is compared to a premium-grade certification gasoline (UTG-96) in a single-cylinder direct-injection (DI) engine with a compression ratio of 12.9:1 at knock-prone engine conditions. UTG-96 (RON = 96.1), light straight run gasoline (RON = 63.6), and n-heptane (RON = 0) are used as the hydrocarbon blending streams for the ethanol-containing fuels in an effort to establish a broad range of knock resistance for high ethanol fuels. Results show that nearly all ethanol-containing fuels are more resistant to engine knock than UTG-96 (the only exception being the ethanol blend with 49% n-heptane). This knock resistance allows ethanol blends made with 33 and 49% light straight run gasoline, and 33% n-heptane to be operated at significantly more advanced combustion phasing for higher efficiency, as well as at higher engine loads. While experimental results show that the octane number of the hydrocarbon blend stock does impact engine performance, there remains a significant opportunity for engine optimization when considering even the lowest octane fuels that are in compliance with the current revision of ASTM D5798 compared to premium-grade gasoline.

  13. BiOctane | Open Energy Information

    Open Energy Info (EERE)

    Product: Biofuel start-up planning to design and develop a biodiesel and ethanol refinery. References: BiOctane1 This article is a stub. You can help OpenEI by expanding it....

  14. Finished Motor Gasoline Net Production

    Gasoline and Diesel Fuel Update (EIA)

    Reformulated Gasoline Blenede w Fuel Ethanol Reformulated Other Gasoline Conventional Gasoline Conventional Gasoline Blended w Fuel Ethanol Conventional Gasoline Blended w Fuel ...

  15. Detailed Chemical Kinetic Reaction Mechanisms for Primary Reference Fuels for Diesel Cetane Number and Spark-Ignition Octane Number

    SciTech Connect (OSTI)

    Westbrook, C K; Pitz, W J; Mehl, M; Curran, H J

    2010-03-03

    For the first time, a detailed chemical kinetic reaction mechanism is developed for primary reference fuel mixtures of n-hexadecane and 2,2,4,4,6,8,8-heptamethyl nonane for diesel cetane ratings. The mechanisms are constructed using existing rules for reaction pathways and rate expressions developed previously for the primary reference fuels for gasoline octane ratings, n-heptane and iso-octane. These reaction mechanisms are validated by comparisons between computed and experimental results for shock tube ignition and for oxidation under jet-stirred reactor conditions. The combined kinetic reaction mechanism contains the submechanisms for the primary reference fuels for diesel cetane ratings and submechanisms for the primary reference fuels for gasoline octane ratings, all in one integrated large kinetic reaction mechanism. Representative applications of this mechanism to two test problems are presented, one describing fuel/air autoignition variations with changes in fuel cetane numbers, and the other describing fuel combustion in a jet-stirred reactor environment with the fuel varying from pure 2,2,4,4,6,8,8-heptamethyl nonane (Cetane number of 15) to pure n-hexadecane (Cetane number of 100). The final reaction mechanism for the primary reference fuels for diesel fuel and gasoline is available on the web.

  16. A Vehicle Manufacturer's Perspective on Higher-Octane Fuels

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

    Vehicle Manufacturer's Perspective on Higher-Octane Fuels Tom Leone, Ford Motor Company DOE "Biomass 2014" meeting Washington, D.C. July 29, 2014 2 Octane rating of fuel The ...

  17. A Vehicle Manufacturer's Perspective on Higher-Octane Fuels | Department

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

    of Energy A Vehicle Manufacturer's Perspective on Higher-Octane Fuels A Vehicle Manufacturer's Perspective on Higher-Octane Fuels Breakout Session 1C-Fostering Technology Adoption I: Building the Market for Renewables with High Octane Fuels A Vehicle Manufacturer's Perspective on Higher-Octane Fuels Tom Leone, Technical Expert, Powertrain Evaluation and Analysis, Ford Motor Company PDF icon leone_biomass_2014.pdf More Documents & Publications Co-Optimization of Fuels and Vehicles A

  18. Ethanol Demand in United States Gasoline Production

    SciTech Connect (OSTI)

    Hadder, G.R.

    1998-11-24

    The Oak Ridge National Laboratory (OWL) Refinery Yield Model (RYM) has been used to estimate the demand for ethanol in U.S. gasoline production in year 2010. Study cases examine ethanol demand with variations in world oil price, cost of competing oxygenate, ethanol value, and gasoline specifications. For combined-regions outside California summer ethanol demand is dominated by conventional gasoline (CG) because the premised share of reformulated gasoline (RFG) production is relatively low and because CG offers greater flexibility for blending high vapor pressure components like ethanol. Vapor pressure advantages disappear for winter CG, but total ethanol used in winter RFG remains low because of the low RFG production share. In California, relatively less ethanol is used in CG because the RFG production share is very high. During the winter in California, there is a significant increase in use of ethanol in RFG, as ethanol displaces lower-vapor-pressure ethers. Estimated U.S. ethanol demand is a function of the refiner value of ethanol. For example, ethanol demand for reference conditions in year 2010 is 2 billion gallons per year (BGY) at a refiner value of $1.00 per gallon (1996 dollars), and 9 BGY at a refiner value of $0.60 per gallon. Ethanol demand could be increased with higher oil prices, or by changes in gasoline specifications for oxygen content, sulfur content, emissions of volatile organic compounds (VOCS), and octane numbers.

  19. U.S. Motor Gasoline Prices

    U.S. Energy Information Administration (EIA) Indexed Site

    Formulation Grade: Gasoline, Average Regular Gasoline Midgrade Gasoline Premium Gasoline Conventional, Average Conventional Regular Conventional Midgrade Conventional Premium ...

  20. High Octane Fuels Can Make Better Use of Renewable Transportation...

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

    Mid-Blend Ethanol Fuels - Implementation Perspectives Making Better Use of Ethanol as a Transportation Fuel With "Renewable Super Premium" The Impact of Low Octane Hydrocarbon ...

  1. Gasoline and Diesel Fuel Update

    Gasoline and Diesel Fuel Update (EIA)

    Gasoline Price Data Collection Procedures Every Monday, retail prices for all three grades of gasoline are collected by telephone from a sample of approximately 800 retail gasoline ...

  2. Gasoline Biodesulfurization Fact Sheet

    Broader source: Energy.gov [DOE]

    This petroleum industry fact sheet describes how biodesulfurization can yield lower sulfur gasoline at lower production costs.

  3. Dehydrogenation links LPG to more octanes

    SciTech Connect (OSTI)

    Gussow, S.; Spence, D.C.; White, E.A.

    1980-01-01

    Air Products and Chemicals Inc.'s Houdry Catofin process, a new application of well-known Houdry catalytic dehydrogenation technology, is an adiabatic, fixed-bed, multireactor catalytic process which produces propylene, isobutylene, and mixed n-butylenes by dehydrogenation of the corresponding saturates. The process is very flexible in that propylene, isobutylene, and mixed n-butylenes can be produced either separately or simultaneously from the corresponding saturates. The process will be used to prepare purity propylene at a Morelos, Mex., plant, which is now in the engineering stage. Five variations of the procedure for producing propylene; methyl tert.-butyl ether; propylene and alkylate; methyl tert.-butyl ether and alkylate; and methyl tert.-butyl ether, alkylate, and 1-butylene are compared with respect to typical product yields, costs and values for process economics, the dehydrogenation route to the three products, manufacturing costs, the sensitivity of return on investment to feedstock costs, and the return on investment, which varies from a low of 11.5% for the third case to a high of 14.4% for the fourth case. The Catofin process is discussed.

  4. Commercialization potential of the china lake trash-to-gasoline process

    SciTech Connect (OSTI)

    Diebold, J.; Smith, G.

    1980-01-01

    The title process involves a series of noncatalytic petrochemical processes to convert organic wastes to a synthetic crude oil containing approximately 90% high-octane gasoline and 10% fuel and lubricating oils. By-product char and gases are consumed for process energy. The key features of the process, the relative confidence of the commercial scale-up and the projected economics based on an independent 3rd-party evaluation are discussed.

  5. Experimental Investigation of Spark-Ignited Combustion with High-Octane Biofuels and EGR. 2. Fuel and EGR Effects on Knock-Limited Load and Speed

    SciTech Connect (OSTI)

    Splitter, Derek A; Szybist, James P

    2013-01-01

    The present study experimentally investigates spark-ignited combustion with 87 AKI E0 gasoline in its neat form and in midlevel alcohol gasoline blends with 24% vol/vol isobutanol gasoline (IB24) and 30% vol/vol ethanol gasoline (E30). A single-cylinder research engine is used with an 11.85:1 compression ratio, hydraulically actuated valves, laboratory intake air, and was capable of external exhaust gas recirculation (EGR). Experiments were conducted with all fuels to full-load conditions with = 1, using both 0% and 15% external-cooled EGR. Higher octane number biofuel blends exhibited increased stoichiometric torque capability at this compression ratio, where the unique properties of ethanol enabled a doubling of the stoichiometric torque capability with E30 as compared to that of 87AKI, up to 20 bar IMEPg (indicating mean effective pressure gross) at = 1. The results demonstrate that for all fuels, EGR is a key enabler for increasing engine efficiency but is less useful for knock mitigation with E30 than for 87AKI gasoline or IB24. Under knocking conditions, 15% EGR is found to offer 1 CA of CA50 timing advance with E30, whereas up to 5 CA of CA50 advance is possible with knock-limited 87AKI gasoline. Compared to 87AKI, both E30 and IB24 are found to have reduced adiabatic flame temperature and shorter combustion durations, which reduce knocking propensity beyond that indicated by the octane number. However, E30+0% EGR is found to exhibit the better antiknock properties than either 87AKI+15% EGR or IB24+15% EGR, expanding the knock limited operating range and engine stoichiometric torque capability at high compression ratio. Furthermore, the fuel sensitivity (S) of E30 was attributed to reduced speed sensitivity of E30, expanding the low-speed stoichiometric torque capability at high compression ratio. The results illustrate that intermediate alcohol gasoline blends exhibit exceptional antiknock properties and performance beyond that indicated by the octane number tests, particularly E30.

  6. Chemistry Impacts in Gasoline HCCI

    SciTech Connect (OSTI)

    Szybist, James P; Bunting, Bruce G

    2006-09-01

    The use of homogeneous charge compression ignition (HCCI) combustion in internal combustion engines is of interest because it has the potential to produce low oxides of nitrogen (NOx) and particulate matter (PM) emissions while providing diesel-like efficiency. In HCCI combustion, a premixed charge of fuel and air auto-ignites at multiple points in the cylinder near top dead center (TDC), resulting in rapid combustion with very little flame propagation. In order to prevent excessive knocking during HCCI combustion, it must take place in a dilute environment, resulting from either operating fuel lean or providing high levels of either internal or external exhaust gas recirculation (EGR). Operating the engine in a dilute environment can substantially reduce the pumping losses, thus providing the main efficiency advantage compared to spark-ignition (SI) engines. Low NOx and PM emissions have been reported by virtually all researchers for operation under HCCI conditions. The precise emissions can vary depending on how well mixed the intake charge is, the fuel used, and the phasing of the HCCI combustion event; but it is common for there to be no measurable PM emissions and NOx emissions <10 ppm. Much of the early HCCI work was done on 2-stroke engines, and in these studies the CO and hydrocarbon emissions were reported to decrease [1]. However, in modern 4-stroke engines, the CO and hydrocarbon emissions from HCCI usually represent a marked increase compared with conventional SI combustion. This literature review does not report on HCCI emissions because the trends mentioned above are well established in the literature. The main focus of this literature review is the auto-ignition performance of gasoline-type fuels. It follows that this discussion relies heavily on the extensive information available about gasoline auto-ignition from studying knock in SI engines. Section 2 discusses hydrocarbon auto-ignition, the octane number scale, the chemistry behind it, its shortcomings, and its relevance to HCCI. Section 3 discusses the effects of fuel volatility on fuel and air mixing and the consequences it has on HCCI. The effects of alcohol fuels on HCCI performance, and specifically the effects that they have on the operable speed/load range, are reviewed in Section 4. Finally, conclusions are drawn in Section 5.

  7. Gasoline and Diesel Fuel Update

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    February 16, 2016 Reformulated Gasoline States in each PADD Region Procedures & Methodology Gasoline Data collection procedures Sampling methodology Coefficient of variation...

  8. Utilization of Renewable Oxygenates as Gasoline Blending Components

    SciTech Connect (OSTI)

    Yanowitz, J.; Christensen, E.; McCormick, R. L.

    2011-08-01

    This report reviews the use of higher alcohols and several cellulose-derived oxygenates as blend components in gasoline. Material compatibility issues are expected to be less severe for neat higher alcohols than for fuel-grade ethanol. Very little data exist on how blending higher alcohols or other oxygenates with gasoline affects ASTM Standard D4814 properties. Under the Clean Air Act, fuels used in the United States must be 'substantially similar' to fuels used in certification of cars for emission compliance. Waivers for the addition of higher alcohols at concentrations up to 3.7 wt% oxygen have been granted. Limited emission testing on pre-Tier 1 vehicles and research engines suggests that higher alcohols will reduce emissions of CO and organics, while NOx emissions will stay the same or increase. Most oxygenates can be used as octane improvers for standard gasoline stocks. The properties of 2-methyltetrahydrofuran, dimethylfuran, 2-methylfuran, methyl pentanoate and ethyl pentanoate suggest that they may function well as low-concentration blends with gasoline in standard vehicles and in higher concentrations in flex fuel vehicles.

  9. Process for conversion of lignin to reformulated, partially oxygenated gasoline

    DOE Patents [OSTI]

    Shabtai, Joseph S. (Salt Lake City, UT); Zmierczak, Wlodzimierz W. (Salt Lake City, UT); Chornet, Esteban (Golden, CO)

    2001-01-09

    A high-yield process for converting lignin into reformulated, partially oxygenated gasoline compositions of high quality is provided. The process is a two-stage catalytic reaction process that produces a reformulated, partially oxygenated gasoline product with a controlled amount of aromatics. In the first stage of the process, a lignin feed material is subjected to a base-catalyzed depolymerization reaction, followed by a selective hydrocracking reaction which utilizes a superacid catalyst to produce a high oxygen-content depolymerized lignin product mainly composed of alkylated phenols, alkylated alkoxyphenols, and alkylbenzenes. In the second stage of the process, the depolymerized lignin product is subjected to an exhaustive etherification reaction, optionally followed by a partial ring hydrogenation reaction, to produce a reformulated, partially oxygenated/etherified gasoline product, which includes a mixture of substituted phenyl/methyl ethers, cycloalkyl methyl ethers, C.sub.7 -C.sub.10 alkylbenzenes, C.sub.6 -C.sub.10 branched and multibranched paraffins, and alkylated and polyalkylated cycloalkanes.

  10. Gasoline and Diesel Fuel Update

    Gasoline and Diesel Fuel Update (EIA)

    Detailed Price and CV Report Motor Gasoline Prices & Coefficients of Variation Spreadsheet

  11. Ethanol Demand in United States Production of Oxygenate-limited Gasoline

    SciTech Connect (OSTI)

    Hadder, G.R.

    2000-08-16

    Ethanol competes with methyl tertiary butyl ether (MTBE) to satisfy oxygen, octane, and volume requirements of certain gasolines. However, MTBE has water quality problems that may create significant market opportunities for ethanol. Oak Ridge National Laboratory (ORNL) has used its Refinery Yield Model to estimate ethanol demand in gasolines with restricted use of MTBE. Reduction of the use of MTBE would increase the costs of gasoline production and possibly reduce the gasoline output of U.S. refineries. The potential gasoline supply problems of an MTBE ban could be mitigated by allowing a modest 3 vol percent MTBE in all gasoline. In the U.S. East and Gulf Coast gasoline producing regions, the 3 vol percent MTBE option results in costs that are 40 percent less than an MTBE ban. In the U.S. Midwest gasoline producing region, with already high use of ethanol, an MTBE ban has minimal effect on ethanol demand unless gasoline producers in other regions bid away the local supply of ethanol. The ethanol/MTBE issue gained momentum in March 2000 when the Clinton Administration announced that it would ask Congress to amend the Clean Air Act to provide the authority to significantly reduce or eliminate the use of MTBE; to ensure that air quality gains are not diminished as MTBE use is reduced; and to replace the existing oxygenate requirement in the Clean Air Act with a renewable fuel standard for all gasoline. Premises for the ORNL study are consistent with the Administration announcement, and the ethanol demand curve estimates of this study can be used to evaluate the impact of the Administration principles and related policy initiatives.

  12. Northeast Gasoline Supply Reserve

    Broader source: Energy.gov [DOE]

    The Northeast region of the U.S. is particularly vulnerable to gasoline disruptions as a result of hurricanes and other natural events. Hurricane Sandy in 2012 caused widespread issues related to...

  13. Experimental Investigation of Spark-Ignited Combustion with High-Octane Biofuels and EGR. 1. Engine Load Range and Downsize Downspeed Opportunity

    SciTech Connect (OSTI)

    Splitter, Derek A; Szybist, James P

    2013-01-01

    The present study experimentally investigates spark-ignited combustion with 87 AKI E0 gasoline in its neat form and in midlevel alcohol gasoline blends with 24% vol/vol isobutanol gasoline (IB24) and 30% vol/vol ethanol gasoline (E30). A single-cylinder research engine was used with an 11.85:1 compression ratio, hydraulically actuated valves, laboratory intake air, and was capable of external exhaust gas recirculation (EGR). Experiments were conducted with all fuels to full-load conditions with = 1, using both 0% and 15% external cooled EGR. Higher octane number biofuel blends exhibited increased stoichiometric torque capability at this compression ratio, where the unique properties of ethanol enabled a doubling of the stoichiometric torque capability with E30 as compared to 87 AKI, up to 20 bar IMEPg (indicated mean effective pressure gross) at = 1. EGR provided thermodynamic advantages and was a key enabler for increasing engine efficiency for all fuel types. However, with E30, EGR was less useful for knock mitigation than gasoline or IB24. Torque densities with E30 with 15% EGR at = 1 operation were similar or better than a modern EURO IV calibration turbo-diesel engine. The results of the present study suggest that it could be possible to implement a 40% downsize + downspeed configuration (1.2 L engine) into a representative midsize sedan. For example, for a midsize sedan at a 65 miles/h cruise, an estimated fuel consumption of 43.9 miles per gallon (MPG) (engine out 102 g-CO2/km) could be achieved with similar reserve power to a 2.0 L engine with 87AKI (38.6 MPG, engine out 135 g-CO2/km). Data suggest that, with midlevel alcohol gasoline blends, engine and vehicle optimization can offset the reduced fuel energy content of alcohol gasoline blends and likely reduce vehicle fuel consumption and tailpipe CO2 emissions.

  14. Price of Motor Gasoline Through Retail Outlets

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    & Stocks by State (Dollars per Gallon Excluding Taxes) Data Series: Retail Price - Motor Gasoline Retail Price - Regular Gasoline Retail Price - Midgrade Gasoline Retail Price...

  15. Intermediate Alcohol-Gasoline Blends, Fuels for Enabling Increased Engine Efficiency and Powertrain Possibilities

    SciTech Connect (OSTI)

    Splitter, Derek A; Szybist, James P

    2014-01-01

    The present study experimentally investigates spark-ignited combustion with 87 AKI E0 gasoline in its neat form and in mid-level alcohol-gasoline blends with 24% vol./vol. iso-butanol-gasoline (IB24) and 30% vol./vol. ethanol-gasoline (E30). A single-cylinder research engine is used with a low and high compression ratio of 9.2:1 and 11.85:1 respectively. The engine is equipped with hydraulically actuated valves, laboratory intake air, and is capable of external exhaust gas recirculation (EGR). All fuels are operated to full-load conditions with =1, using both 0% and 15% external cooled EGR. The results demonstrate that higher octane number bio-fuels better utilize higher compression ratios with high stoichiometric torque capability. Specifically, the unique properties of ethanol enabled a doubling of the stoichiometric torque capability with the 11.85:1 compression ratio using E30 as compared to 87 AKI, up to 20 bar IMEPg at =1 (with 15% EGR, 18.5 bar with 0% EGR). EGR was shown to provide thermodynamic advantages with all fuels. The results demonstrate that E30 may further the downsizing and downspeeding of engines by achieving increased low speed torque, even with high compression ratios. The results suggest that at mid-level alcohol-gasoline blends, engine and vehicle optimization can offset the reduced fuel energy content of alcohol-gasoline blends, and likely reduce vehicle fuel consumption and tailpipe CO2 emissions.

  16. Gasoline prices increase (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    gasoline prices increase (short version) The U.S. average retail price for regular gasoline rose to 3.69 a gallon on Monday. That's up 1.2 cents from a week ago, based on the ...

  17. Advanced Gasoline Turbocharged Direct Injection (GTDI) Engine...

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

    Vehicle Technologies Office Merit Review 2014: Advanced Gasoline Turbocharged Direct Injection (GTDI) Engine Development Advanced Gasoline Turbocharged Direct Injection (GTDI) ...

  18. High-Octane Mid-Level Ethanol Blend Market Assessment

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    High-Octane Mid-Level Ethanol Blend Market Assessment Caley Johnson, Emily Newes, Aaron Brooker, and Robert McCormick National Renewable Energy Laboratory Steve Peterson Lexidyne, LLC Paul Leiby, Rocio Uria Martinez, and Gbadebo Oladosu Oak Ridge National Laboratory Maxwell L. Brown Colorado School of Mines Technical Report NREL/TP-5400-63698 December 2015 NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency & Renewable Energy Operated by the Alliance

  19. Gasoline and Diesel Fuel Update

    Gasoline and Diesel Fuel Update (EIA)

    Gasoline Sampling Methodology The sample for the Motor Gasoline Price Survey was drawn from a frame of approximately 115,000 retail gasoline outlets. The gasoline outlet frame was constructed by combining information purchased from a private commercial source with information contained on existing EIA petroleum product frames and surveys. Outlet names, and zip codes were obtained from the private commercial data source. Additional information was obtained directly from companies selling retail

  20. Reformulated Gasoline Foreign Refinery Rules

    Gasoline and Diesel Fuel Update (EIA)

    Reformulated Gasoline Foreign Refinery Rules Contents * Introduction o Table 1. History of Foreign Refiner Regulations * Foreign Refinery Baseline * Monitoring Imported Conventional Gasoline * Endnotes Related EIA Short-Term Forecast Analysis Products * Areas Participating in the Reformulated Gasoline Program * Environmental Regulations and Changes in Petroleum Refining Operations * Oxygenate Supply/Demand Balances in the Short-Term Integrated Forecasting Model * Refiners Switch to Reformulated

  1. Chemical kinetic modeling of component mixtures relevant to gasoline

    SciTech Connect (OSTI)

    Mehl, M; Curran, H J; Pitz, W J; Dooley, S; Westbrook, C K

    2008-05-29

    Detailed kinetic models of pyrolysis and combustion of hydrocarbon fuels are nowadays widely used in the design of internal combustion engines and these models are effectively applied to help meet the increasingly stringent environmental and energetic standards. In previous studies by the combustion community, such models not only contributed to the understanding of pure component combustion, but also provided a deeper insight into the combustion behavior of complex mixtures. One of the major challenges in this field is now the definition and the development of appropriate surrogate models able to mimic the actual features of real fuels. Real fuels are complex mixtures of thousands of hydrocarbon compounds including linear and branched paraffins, naphthenes, olefins and aromatics. Their behavior can be effectively reproduced by simpler fuel surrogates containing a limited number of components. Aside the most commonly used surrogates containing iso-octane and n-heptane only, the so called Primary Reference Fuels (PRF), new mixtures have recently been suggested to extend the reference components in surrogate mixtures to also include alkenes and aromatics. It is generally agreed that, including representative species for all the main classes of hydrocarbons which can be found in real fuels, it is possible to reproduce very effectively in a wide range of operating conditions not just the auto-ignition propensity of gasoline or Diesel fuels, but also their physical properties and their combustion residuals [1]. In this work, the combustion behavior of several components relevant to gasoline surrogate formulation is computationally examined. The attention is focused on the autoignition of iso-octane, hexene and their mixtures. Some important issues relevant to the experimental and modeling investigation of such fuels are discussed with the help of rapid compression machine data and calculations. Following the model validation, the behavior of mixtures is discussed on the basis of computational results.

  2. Motor gasoline assessment, Spring 1997

    SciTech Connect (OSTI)

    1997-07-01

    The springs of 1996 and 1997 provide an excellent example of contrasting gasoline market dynamics. In spring 1996, tightening crude oil markets pushed up gasoline prices sharply, adding to the normal seasonal gasoline price increases; however, in spring 1997, crude oil markets loosened and crude oil prices fell, bringing gasoline prices down. This pattern was followed throughout the country except in California. As a result of its unique reformulated gasoline, California prices began to vary significantly from the rest of the country in 1996 and continued to exhibit distinct variations in 1997. In addition to the price contrasts between 1996 and 1997, changes occurred in the way in which gasoline markets were supplied. Low stocks, high refinery utilizations, and high imports persisted through 1996 into summer 1997, but these factors seem to have had little impact on gasoline price spreads relative to average spread.

  3. The Impact of Low Octane Hydrocarbon Blending Streams on "E85...

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

    IMPACT OF LOW OCTANE HYDROCARBON BLENDING STREAMS ON "E85" ENGINE OPTIMIZATION Jim Szybist ... Year ETHANOL IS CURRENTLY THE LARGEST VOLUME BIOFUEL, VERY IMPORTANT FOR EISA COMPLIANCE * ...

  4. Novel Characterization of GDI Engine Exhaust for Gasoline and Mid-Level Gasoline-Alcohol Blends

    SciTech Connect (OSTI)

    Storey, John Morse; Lewis Sr, Samuel Arthur; Szybist, James P; Thomas, John F; Barone, Teresa L; Eibl, Mary A; Nafziger, Eric J; Kaul, Brian C

    2014-01-01

    Gasoline direct injection (GDI) engines can offer improved fuel economy and higher performance over their port fuel-injected (PFI) counterparts, and are now appearing in increasingly more U.S. and European vehicles. Small displacement, turbocharged GDI engines are replacing large displacement engines, particularly in light-duty trucks and sport utility vehicles, in order for manufacturers to meet more stringent fuel economy standards. GDI engines typically emit the most particulate matter (PM) during periods of rich operation such as start-up and acceleration, and emissions of air toxics are also more likely during this condition. A 2.0 L GDI engine was operated at lambda of 0.91 at typical loads for acceleration (2600 rpm, 8 bar BMEP) on three different fuels; an 87 anti-knock index (AKI) gasoline (E0), 30% ethanol blended with the 87 AKI fuel (E30), and 48% isobutanol blended with the 87 AKI fuel. E30 was chosen to maximize octane enhancement while minimizing ethanol-blend level and iBu48 was chosen to match the same fuel oxygen level as E30. Particle size and number, organic carbon and elemental carbon (OC/EC), soot HC speciation, and aldehydes and ketones were all analyzed during the experiment. A new method for soot HC speciation is introduced using a direct, thermal desorption/pyrolysis inlet for the gas chromatograph (GC). Results showed high levels of aromatic compounds were present in the PM, including downstream of the catalyst, and the aldehydes were dominated by the alcohol blending.

  5. Prices of Refiner Motor Gasoline Sales to End Users

    U.S. Energy Information Administration (EIA) Indexed Site

    Product/ Sales Type: Gasoline, All Grades - Sales to End Users (U.S. only) Gasoline, All Grades - Through Retail Outlets Gasoline, All Grades - Other End Users Gasoline, All Grades - Sales for Resale Gasoline, All Grades - DTW (U.S. only) Gasoline, All Grades - Rack (U.S. only) Gasoline, All Grades - Bulk (U.S. only) Regular Gasoline - Sales to End Users (U.S. only) Regular Gasoline - Through Retail Outlets Regular Gasoline - Other End Users Regular Gasoline - Sales for Resale Regular Gasoline -

  6. EIS-0039: Motor Gasoline Deregulation and the Gasoline Tilt

    Broader source: Energy.gov [DOE]

    The Economic Regulatory Administration developed this EIS to evaluate the environmental impacts, including social and economic impacts, that may result from either of two proposed regulatory changes: (1) the exemption of motor gasoline from the Department of Energy's Mandatory Petroleum Price and Allocation Regulations, and (2) the adoption of the gasoline tilt, a proposed regulation that would allow refiners to recover an additional amount of their total increased costs on gasoline.

  7. Method of making alkyl esters

    DOE Patents [OSTI]

    Elliott, Brian

    2010-09-14

    Methods of making alkyl esters are described herein. The methods are capable of using raw, unprocessed, low-cost feedstocks and waste grease. Generally, the method involves converting a glyceride source to a fatty acid composition and esterifying the fatty acid composition to make alkyl esters. In an embodiment, a method of making alkyl esters comprises providing a glyceride source. The method further comprises converting the glyceride source to a fatty acid composition comprising free fatty acids and less than about 1% glyceride by mass. Moreover, the method comprises esterifying the fatty acid composition in the presence of a solid acid catalyst at a temperature ranging firm about 70.degree. C. to about 120.degree. C. to produce alkyl esters, such that at least 85% of the free fatty acids are converted to alkyl esters. The method also incorporates the use of packed bed reactors for glyceride conversion and/or fatty acid esterification to make alkyl esters.

  8. Gasoline and Diesel Fuel Update

    Gasoline and Diesel Fuel Update (EIA)

    Methodology For Gasoline and Diesel Fuel Pump Components The components for the gasoline and diesel fuel pumps are calculated in the following manner in cents per gallon and then converted into a percentage: Crude Oil - the monthly average of the composite refiner acquisition cost, which is the average price of crude oil purchased by refiners. Refining Costs & Profits - the difference between the monthly average of the spot price of gasoline or diesel fuel (used as a proxy for the value of

  9. High Octane Fuels Can Make Better Use of Renewable Transportation Fuels

    Broader source: Energy.gov [DOE]

    Breakout Session 1C—Fostering Technology Adoption I: Building the Market for Renewables with High Octane Fuels High Octane Fuels Can Make Better Use of Renewable Transportation Fuels Brian West, Deputy Director, Engines and Emissions Research Center; Oak Ridge National Laboratory

  10. Motor Gasoline Assessment, Spring 1997

    Reports and Publications (EIA)

    1997-01-01

    Analyzes the factors causing the run up of motor gasoline prices during spring 1996 and the different market conditions during spring 1997 that caused prices to decline.

  11. California Gasoline Price Study, 2003

    Reports and Publications (EIA)

    2003-01-01

    This is the final report to Congressman Ose describing the factors driving California's spring 2003 gasoline price spike and the subsequent price increases in June and August.

  12. Topsoe integrated gasoline synthesis (TIGAS)

    SciTech Connect (OSTI)

    Hansen, H.K.; Joensen, F.

    1987-01-01

    Integration of Haldor Topsoe's oxygenate (MeOH, DME) synthesis and the MTG process into one single synthesis loop provides a new low investment route to gasoline from natural gas. The integrated process has been demonstrated in an industrial pilot with a capacity of 1 MTPD gasoline since 1984. The pilot has operated successfully for more than 10,000 hours.

  13. Gasoline prices decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    Gasoline prices decrease (short version) The U.S. average retail price for regular gasoline fell to $3.68 a gallon on Monday. That's down 2.9 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  14. Gasoline prices decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    Gasoline prices decrease (short version) The U.S. average retail price for regular gasoline fell to $3.67 a gallon on Monday. That's down 3-tenths of a penny from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  15. Investigation of Knock limited Compression Ratio of Ethanol Gasoline Blends

    SciTech Connect (OSTI)

    Szybist, James P; Youngquist, Adam D; Wagner, Robert M; Moore, Wayne; Foster, Matthew; Confer, Keith

    2010-01-01

    Ethanol offers significant potential for increasing the compression ratio of SI engines resulting from its high octane number and high latent heat of vaporization. A study was conducted to determine the knock limited compression ratio of ethanol gasoline blends to identify the potential for improved operating efficiency. To operate an SI engine in a flex fuel vehicle requires operating strategies that allow operation on a broad range of fuels from gasoline to E85. Since gasoline or low ethanol blend operation is inherently limited by knock at high loads, strategies must be identified which allow operation on these fuels with minimal fuel economy or power density tradeoffs. A single cylinder direct injection spark ignited engine with fully variable hydraulic valve actuation (HVA) is operated at WOT conditions to determine the knock limited compression ratio (CR) of ethanol fuel blends. The geometric compression ratio is varied by changing pistons, producing CR from 9.2 to 13.66. The effective CR is varied using an electro-hydraulic valvetrain that changed the effective trapped displacement using both Early Intake Valve Closing (EIVC) and Late Intake Valve Closing (LIVC). The EIVC and LIVC strategies result in effective CR being reduced while maintaining the geometric expansion ratio. It was found that at substantially similar engine conditions, increasing the ethanol content of the fuel results in higher engine efficiency and higher engine power. These can be partially attributed to a charge cooling effect and a higher heating valve of a stoichiometric mixture for ethanol blends (per unit mass of air). Additional thermodynamic effects on and a mole multiplier are also explored. It was also found that high CR can increase the efficiency of ethanol fuel blends, and as a result, the fuel economy penalty associated with the lower energy content of E85 can be reduced by about a third. Such operation necessitates that the engine be operated in a de-rated manner for gasoline, which is knock-prone at these high CR, in order to maintain compatibility. By using EIVC and LIVC strategies, good efficiency is maintained with gasoline, but power is reduced by about 34%.

  16. Ionization of ethane, butane, and octane in strong laser fields

    SciTech Connect (OSTI)

    Palaniyappan, Sasi; Mitchell, Rob; Ekanayake, N.; Watts, A. M.; White, S. L.; Sauer, Rob; Howard, L. E.; Videtto, M.; Mancuso, C.; Wells, S. J.; Stanev, T.; Wen, B. L.; Decamp, M. F.; Walker, B. C.

    2010-10-15

    Strong-field photoionization of ethane, butane, and octane are reported at intensities from 10{sup 14} to 10{sup 17} W/cm{sup 2}. The molecular fragment ions, C{sup +} and C{sup 2+}, are created in an intensity window from 10{sup 14} to 10{sup 15} W/cm{sup 2} and have intensity-dependent yields similar to the molecular fragments C{sub m}H{sub n}{sup +} and C{sub m}H{sub n}{sup 2+}. In the case of C{sup +}, the yield is independent of the molecular parent chain length. The ionization of more tightly bound valence electrons in carbon (C{sup 3+} and C{sup 4+}) has at least two contributing mechanisms, one influenced by the parent molecule size and one resulting from the tunneling ionization of the carbon ion.

  17. Gasoline and Diesel Fuel Update

    Gasoline and Diesel Fuel Update (EIA)

    Procedures, Methodology, and Coefficients of Variation Gasoline price data collection procedures Every Monday, retail prices for all three grades of gasoline are collected by telephone from a sample of approximately 800 retail gasoline outlets. The prices are published around 5:00 p.m. ET Monday, except on government holidays, when the data are released on Tuesday (but still represent Monday's price). The reported price includes all taxes and is the pump price paid by a consumer as of 8:00 a.m.

  18. Gasoline and Diesel Fuel Update

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Even when crude oil prices are stable... read more in Gasoline Explained What causes fluctuations in diesel fuel oil prices? The retail price of a gallon of diesel fuel reflects ...

  19. Gasoline Price Pass-through

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    differences, whereas stationary series can be estimated in level form. The unit root test could not reject the hypothesis that the retail and spot gasoline price series have a...

  20. Mild Catalytic methods for Alkyl-Alkyl Bond Formation

    SciTech Connect (OSTI)

    Vicic, David A

    2009-08-10

    Overview of Research Goals and Accomplishments for the Period 07/01/06 06/30/07: Our overall research goal is to transform the rapidly emerging synthetic chemistry involving alkyl-alkyl cross-couplings into more of a mechanism-based field so that that new, rationally-designed catalysts can be performed under energy efficient conditions. Our specific objectives for the previous year were 1) to obtain a proper electronic description of an active catalyst for alkyl-alkyl cross-coupling reactions and 2) to determine the effect of ligand structure on the rate, scope, selectivity, and functional group compatibility of C(sp3)-C(sp3) cross-coupling catalysis. We have completed both of these initial objectives and established a firm base for further studies. The specific significant achievements of the current grant period include: 1) we have performed magnetic and computational studies on (terpyridine)NiMe, an active catalyst for alkyl-alkyl cross couplings, and have discovered that the unpaired electron resides heavily on the terpyridine ligand and that the proper electronic description of this nickel complex is a Ni(II)-methyl cation bound to a reduced terpyridine ligand; 2) we have for the first time shown that alkyl halide reduction by terpyridyl nickel catalysts is substantially ligand based; 3) we have shown by isotopic labeling studies that the active catalyst (terpyridine)NiMe is not produced via a mechanism that involves the formation of methyl radicals when (TMEDA)NiMe2 is used as the catalyst precursor; 4) we have performed an extensive ligand survey for the alkyl-alkyl cross-coupling reactions and have found that electronic factors only moderately influence reactivity in the terpyridine-based catalysis and that the most dramatic effects arise from steric and solubility factors; 5) we have found that the use of bis(dialkylphosphino)methanes as ligands for nickel does not produce active catalysts for cross-coupling but rather leads to bridging hydride complexes of varying geometries; 6) we have determined that the geometry of aforementioned bridging hydride complexes is largely determined by external forces such as hydrogen bonding interactions and crystal packing forces; 7) we have found that the rate of reductive elimination of alkane from a (pyridyl-2-pyrrolide)AuMe2 complex is severely inhibited due to the rigid geometry of the pyridyl-2-pyrrolide ligand; 8) we have prepared, structurally characterized, and explored the reactivity of 1-adamantylzinc reagents as model nucleophiles for sterically challenging alkyl-alkyl cross-coupling reactions. The continued success of this work will lead to alkyl-alkyl cross-coupling catalysts with broad scope and selectivities. The work has potential to significantly impact science and technologies of interest to the DOE as the chemistry is focused on developing useful reactions using reagents that can be directly prepared from petroleum and natural gas feedstocks. Moreover, the developing synthetic chemistry can profoundly affect the way materials, fine chemicals, and drugs are made. Since the methodology we are developing can shorten existing synthetic protocols, proceed at room temperature, and operate under environmentally benign conditions, it can greatly reduce energy expenditures, especially considering the contribution of the chemical manufacturing field to the gross domestic product.

  1. The oxidation of a gasoline surrogate in the negative temperature coefficient region

    SciTech Connect (OSTI)

    Lenhert, David B.; Miller, David L.; Cernansky, Nicholas P.; Owens, Kevin G.

    2009-03-15

    This experimental study investigated the preignition reactivity behavior of a gasoline surrogate in a pressurized flow reactor over the low and intermediate temperature regime (600-800 K) at elevated pressure (8 atm). The surrogate mixture, a volumetric blend of 4.6% 1-pentene, 31.8% toluene, 14.0% n-heptane, and 49.6% 2,2,4-trimethyl-pentane (iso-octane), was shown to reproduce the low and intermediate temperature reactivity of full boiling range fuels in a previous study. Each of the surrogate components were examined individually to identify the major intermediate species in order to improve existing kinetic models, where appropriate, and to provide a basis for examining constituent interactions in the surrogate mixture. n-Heptane and 1-pentene started reacting at 630 K and 640 K, respectively, and both fuels exhibited a strong negative temperature coefficient (NTC) behavior starting at 700 and 710 K, respectively. Iso-octane showed a small level of reactivity at 630 K and a weak NTC behavior starting at 665 K. Neat toluene was unreactive at these temperatures. The surrogate started reacting at 630 K and exhibited a strong NTC behavior starting at 693 K. The extent of fuel consumption varied for each of the surrogate constituents and was related to their general autoignition behavior. Most of the intermediates identified during the surrogate oxidation were species observed during the oxidation of the neat constituents; however, the surrogate mixture did exhibit a significant increase in intermediates associated with iso-octane oxidation, but not from n-heptane. While neat toluene was unreactive at these temperatures, in the mixture it reacted with the radical pool generated by the other surrogate components, forming benzaldehyde, benzene, phenol, and ethyl-benzene. The observed n-heptane, iso-octane, and surrogate oxidation behavior was compared to predictions using existing kinetic models. The n-heptane model reasonably predicted the disappearance of the fuel, but overpredicted the formation of several of the smaller intermediates. The iso-octane model significantly overpredicted the reaction of the fuel and formation of the intermediates. The 1-pentene model reasonably predicted the fuel consumption, but underestimated the importance of radical addition to the double bond. The results of this study provide a critical experimental foundation for the investigation of surrogate mixtures and for validation of kinetic models. (author)

  2. High octane ethers from synthesis gas-derived alcohol

    SciTech Connect (OSTI)

    Klier, K.; Herman, R.G.; Bastian, R.D.; DeTavernier, S. . Dept. of Chemistry Lehigh Univ., Bethlehem, PA . Zettlemoyer Center for Surface Studies)

    1991-01-01

    The objective of the proposed research is to synthesize high octane ethers directly from coal-derived synthesis gas via alcohol mixtures that are rich in methanol and isobutanol. The overall scheme involves gasification of coal, purification and shifting of the synthesis gas, higher alcohol synthesis, and direct synthesis of ethers. Commercial acid and superacid resin catalysts were obtained and tested under one set of conditions to compare the activities and selectivities for forming the unsymmetric methylisobutylether (MIBE) by coupling methanol with isobutanol. It was found that both Nafion-H microsaddles and Amberlyst-15 resins are active for this synthesis reaction. While and the Nafion-H catalyst does form the MIBE product fairly selectively under the reaction conditions utilized, the Amberlyst-15 catalyst formed dimethylether (DME) as the major product. In addition, significantly larger quantities of the C{sub 4} hydrocarbon products were observed over the Amberlyst-15 catalyst at 123{degree}C and 13.6 atm. It has been demonstrated that methyltertiarybutylether (MTBE) MIBE, DME and diisobutylether (DIBE) are separated and quantitatively determined by using the proper analytical conditions. In order to gain insight into the role of superacidity in promoting the selective coupling of the alcohols to form the unsymmetric ether, the strengths of the acid sites on the catalysts are being probed by thermometric titrations in non-aqueous solutions. 18 refs., 20 figs., 4 tabs.

  3. The Performance of Gasoline Fuels and Surrogates in Gasoline HCCI Combustion

    Broader source: Energy.gov [DOE]

    Almost 2 dozen gasoline fuels, blending components, and surrogates were evaluated in a single-cylinder HCCI gasoline engine for combustion, emissions, and efficiency performance.

  4. This Week In Petroleum Gasoline Section

    Gasoline and Diesel Fuel Update (EIA)

    Regular gasoline retail prices (dollars per gallon) U.S. Average Conventional Reformulated U.S. retail regular gasoline prices graph Retail average regular gasoline prices graph Retail conventional regular gasoline prices graph Retail reformulated regular gasoline prices graph Retail average regular gasoline prices (dollars per gallon) more price data › Year ago Most recent 05/11/15 05/09/16 05/02/16 04/25/16 04/18/16 04/11/16 04/04/16 03/28/16 U.S. 2.691 2.220 2.240 2.162 2.137 2.069 2.083

  5. Petroleum Supply Monthly

    U.S. Energy Information Administration (EIA) Indexed Site

    0 January 2016 Alcohol. The family name of a group of organic chemical compounds composed of carbon, hydrogen, and oxygen. The series of molecules vary in chain length and are composed of a hydrocarbon plus a hydroxyl group; CH3-(CH2)n-OH (e.g., methanol, ethanol, and tertiary butyl alcohol). Alkylate. The product of an alkylation reaction. It usually refers to the high octane product from alkylation units. This alkylate is used in blending high octane gasoline. Alkylation. A refning process for

  6. Petroleum Supply Monthly

    U.S. Energy Information Administration (EIA) Indexed Site

    June 2015 Alcohol. The family name of a group of organic chemical compounds composed of carbon, hydrogen, and oxygen. The series of molecules vary in chain length and are composed of a hydrocarbon plus a hydroxyl group; CH3-(CH2)n-OH (e.g., methanol, ethanol, and tertiary butyl alcohol). Alkylate. The product of an alkylation reaction. It usually refers to the high octane product from alkylation units. This alkylate is used in blending high octane gasoline. Alkylation. A refning process for

  7. Gasoline prices decrease (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    Gasoline prices decrease (long version) The U.S. average retail price for regular gasoline fell to $3.70 a gallon on Monday. That's down 1.4 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. Pump prices were highest in the West Coast region at 4.01 a gallon, down 4.2 cents from a week ago. Prices were lowest in the Rocky Mountain States at 3.47 a gallon, remaining unchanged from last week

  8. Gasoline prices decrease (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    5, 2014 Gasoline prices decrease (long version) The U.S. average retail price for regular gasoline fell to $3.68 a gallon on Monday. That's down 2.9 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. Pump prices were highest in the West Coast states at 4.06 a gallon, down 1.8 cents from a week ago. Prices were lowest in the Gulf Coast region at 3.47 a gallon, down 2.6 cents.This is Amerine Woodyard, with EIA, in Washington.

  9. EIA lowers forecast for summer gasoline prices

    U.S. Energy Information Administration (EIA) Indexed Site

    EIA lowers forecast for summer gasoline prices U.S. gasoline prices are expected to be ... according to the new monthly forecast from the U.S. Energy Information Administration. ...

  10. Price Changes in the Gasoline Market - Are Midwestern Gasoline Prices Downward Sticky?

    Reports and Publications (EIA)

    1999-01-01

    The report concentrates on regional gasoline prices in the Midwest from October 1992 through June 1998.

  11. Advanced Gasoline Turbocharged Direct Injection (GTDI) Engine...

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

    Turbocharged Direct Injection (GTDI) Engine Development Vehicle Technologies Office Merit Review 2014: Advanced Gasoline Turbocharged Direct Injection (GTDI) Engine ...

  12. Blender Net Production of Finished Motor Gasoline

    U.S. Energy Information Administration (EIA) Indexed Site

    Product: Total Finished Motor Gasoline Reformulated Gasoline Reformulated Blended w/ Fuel Ethanol Reformulated Other Conventional Gasoline Conventional Blended w/ Fuel Ethanol Conventional Blended w/ Fuel Ethanol, Ed55 and Lower Conventional Blended w/ Fuel Ethanol, Greater than Ed55 Conventional Other Finished Aviation Gasoline Kerosene-Type Jet Fuel Kerosene Distillate Fuel Oil Distillate F.O., 15 ppm Sulfur and under Distillate F.O., Greater than 15 ppm to 500 ppm Sulfur Distillate F.O.,

  13. Laminar burning velocities at high pressure for primary reference fuels and gasoline: Experimental and numerical investigation

    SciTech Connect (OSTI)

    Jerzembeck, S.; Peters, N. [RWTH, Aachen (Germany); Pepiot-Desjardins, P.; Pitsch, H. [Department of Mechanical Engineering, Stanford University, CA (United States)

    2009-02-15

    Spherical flames of n-heptane, iso-octane, PRF 87 and gasoline/air mixtures are experimentally investigated to determine laminar burning velocities and Markstein lengths under engine-relevant conditions by using the constant volume bomb method. Data are obtained for an initial temperature of 373 K, equivalence ratios varying from {phi}=0.7 to {phi}=1.2, and initial pressures from 10 to 25 bar. To track the flame front in the vessel a dark field He-Ne laser Schlieren measurement technique and digital image processing were used. The propagating speed with respect to the burned gases and the stretch rate are determined from the rate of change of the flame radius. The laminar burning velocities are obtained through a linear extrapolation to zero stretch. The experimentally determined Markstein numbers are compared to theoretical predictions. A reduced chemical kinetic mechanism for n-heptane and iso-octane was derived from the Lawrence Livermore comprehensive mechanisms. This mechanism was validated for ignition delay times and flame propagation at low and high pressures. In summary an overall good agreement with the various experimental data sets used in the validation was obtained. (author)

  14. Motor Gasoline Outlook and State MTBE Bans

    Reports and Publications (EIA)

    2003-01-01

    The U.S. is beginning the summer 2003 driving season with lower gasoline inventories and higher prices than last year. Recovery from this tight gasoline market could be made more difficult by impending state bans on the blending of methyl tertiary butyl ether (MTBE) into gasoline that are scheduled to begin later this year.

  15. Gasoline prices - January 7, 2013

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline showed little movement from last week. Prices remained flat at $3.30 a gallon on Monday, based on the weekly price survey by the U.S. Energy Information Administration. This is Amerine Woodyard, with EIA, in Washington. For more information, contact Amerine Woodyard on

  16. Gasoline prices decrease (Short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    Short version) The U.S. average retail price for regular gasoline fell to $3.65 a gallon on Monday. That's down 2.8 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration

  17. Gasoline prices decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline fell to $3.63 a gallon on Monday. That's down 2.9 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration

  18. Methods of making alkyl esters

    DOE Patents [OSTI]

    Elliott, Brian

    2010-08-03

    A method comprising contacting an alcohol, a feed comprising one or more glycerides and equal to or greater than 2 wt % of one or more free fatty acids, and a solid acid catalyst, a nanostructured polymer catalyst, or a sulfated zirconia catalyst in one or more reactors, and recovering from the one or more reactors an effluent comprising equal to or greater than about 75 wt % alkyl ester and equal to or less than about 5 wt % glyceride.

  19. PREPARATION OF ALKYL PYROPHOSPHATE EXTRACTANTS

    DOE Patents [OSTI]

    Levine, C.A.; Skiens, W.E.; Moore, G.R.

    1960-08-01

    A process for providing superior solvent extractants for metal recovery processes is given wherein the extractant comprises an alkyl pyrophosphoric acid ester dissolved in an organic solvent diluent. Finely divided solid P/sub 2/O/ sub 5/ is slurried in an organic solvent-diluent selected from organic solvents such as kerosene, benzene, chlorobenzene, toluene, etc. An alcohol selected from the higher alcohols having 4 to 17 carbon atoms. e.g.. hexanol-1. heptanol-3, octanol-1. 2.6-dimethyl-heptanol-4, and decanol-1, is rapidly added to the P/sub 2/O/sub 5/ slurry in the amount of about 2 moles of alcohol to 1 mole of P/sub 2/ O/sub 5/. The temperature is maintained below about 110 deg C during the course of the P/sub 2/O/sub 5/-alcohol reaction. An alkyl pyrophosphate extractant compound is formed as a consequence of the reaction process. The alkyl pyrophosphate solvent-diluent extractant phase is useful in solvent extraction metal recovery processes.

  20. Detailed Chemical Kinetic Modeling of Surrogate Fuels for Gasoline and Application to an HCCI Engine

    SciTech Connect (OSTI)

    Naik, C V; Pitz, W J; Sj?berg, M; Dec, J E; Orme, J; Curran, H J; Simmie, J M; Westbrook, C K

    2005-01-07

    Gasoline consists of many different classes of hydrocarbons, such as paraffins, olefins, aromatics, and cycloalkanes. In this study, a surrogate gasoline reaction mechanism is developed, and it has one representative fuel constituent from each of these classes. These selected constituents are iso-octane, n-heptane, 1-pentene, toluene, and methyl-cyclohexane. The mechanism was developed in a step-wise fashion, adding submechanisms to treat each fuel component. Reactions important for low temperature oxidation (<1000K) and cross-reactions among different fuels are incorporated into the mechanism. The mechanism consists of 1214 species and 5401 reactions. A single-zone engine model is used to evaluate how well the mechanism captures autoignition behavior for conditions corresponding to homogeneous charge compression ignition (HCCI) engine operation. Experimental data are available for both how the combustion phasing changes with fueling at a constant intake temperature, and also how the intake temperature has to be changed with pressure in order to maintain combustion phasing for a fixed equivalence ratio. Three different surrogate fuel mixtures are used for the modeling. Predictions are in reasonably good agreement with the engine data. In addition, the heat release rate is calculated and compared to the data from experiments. The model predicts less low-temperature heat release than that measured. It is found that the low temperature heat-release rate depends strongly on engine speed, reactions of RO{sub 2}+HO{sub 2}, fuel composition, and pressure boost.

  1. Solid Catalyst - Alkylation - Energy Innovation Portal

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    is a method used to reactivate solidliquid catalysts used in INL's super critical process to produce alkylates. The method brings the catalyst into contact with the designated...

  2. Solid Catalyzed Isoparaffin Alkylation at Supercritical Fluid...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    About This Technology Technology Marketing Summary INL has developed a solid catalyst process for the alkylation reaction of isoparaffins with olefins over solid catalysts. The...

  3. ,"Motor Gasoline Sales Through Retail Outlets Prices "

    U.S. Energy Information Administration (EIA) Indexed Site

    ,"Worksheet Name","Description"," Of Series","Frequency","Latest Data for" ,"Data 1","Motor Gasoline Sales Through Retail Outlets Prices ",60,"Annual",2014,"6301984" ,"Release...

  4. Motor Gasoline Outlook and State MTBE Bans

    Gasoline and Diesel Fuel Update (EIA)

    Several years ago MTBE was detected in water supplies scattered throughout the country, ... gasoline engines into surface and ground water. (For more information refer to the ...

  5. Eliminating MTBE in Gasoline in 2006

    Gasoline and Diesel Fuel Update (EIA)

    in 2006. Companies' decisions to eliminate MTBE have been driven by State bans due to water contamination concerns, continuing liability exposure from adding MTBE to gasoline,...

  6. California Gasoline Price Study, 2003 Preliminary Findings

    Reports and Publications (EIA)

    2003-01-01

    This is the preliminary report to Congressman Ose describing the factors driving California's spring 2003 gasoline price spike and the subsequent price increases in June and August.

  7. Gasoline prices - January 7, 2013

    U.S. Energy Information Administration (EIA) Indexed Site

    long version) The U.S. average retail price for regular gasoline showed little movement from last week. Prices remained flat at $3.30 a gallon on Monday, based on the weekly price survey by the U.S. Energy Information Administration. Pump prices were highest in the New England and Central Atlantic regions, at 3.52 a gallon, up around 2 cents in both regions from a week ago. For the second week in a row, prices were lowest in the Rocky Mountain States at 2.94 a gallon, down 8.1 cents. This is

  8. Gasoline prices decrease (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    long version) The U.S. average retail price for regular gasoline fell to $3.65 a gallon on Monday. That's down 2.8 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. Pump prices were highest in the West Coast region at 3.93 a gallon, down 1.9 cents from a week ago. Prices were lowest in the Gulf Coast States at 3.37 a gallon, down 2.6 cents

  9. Gasoline prices decrease (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    long version) The U.S. average retail price for regular gasoline fell to $3.63 a gallon on Monday. That's down 2.9 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. Pump prices were highest in the West Coast region at 3.89 a gallon, up a penny from a week ago. Prices were lowest in the Gulf Coast States at 3.38 a gallon, down 3.9 cents

  10. Gasoline and Diesel Fuel Update

    Gasoline and Diesel Fuel Update (EIA)

    Gasoline Pump Components History WHAT WE PAY FOR IN A GALLON OF REGULAR GASOLINE Mon-yr Retail Price (Dollars per gallon) Refining (percentage) Distribution & Marketing (percentage) Taxes (percentage) Crude Oil (percentage) Jan-00 1.289 7.8 13.0 32.1 47.1 Feb-00 1.377 17.9 7.5 30.1 44.6 Mar-00 1.517 15.4 12.8 27.3 44.6 Apr-00 1.465 10.1 20.2 28.3 41.4 May-00 1.485 20.2 9.2 27.9 42.7 Jun-00 1.633 22.2 8.8 25.8 43.1 Jul-00 1.551 13.2 15.8 27.2 43.8 Aug-00 1.465 15.8 7.5 28.8 47.8 Sep-00 1.550

  11. Gasoline prices continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    Gasoline prices continue to decrease (short version) The U.S. average retail price for regular gasoline fell to $3.29 a gallon on Monday. That's down 3-tenths of a penny from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  12. Gasoline prices continue to increase (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    Gasoline prices continue to increase (short version) The U.S. average retail price for regular gasoline rose to $3.44 a gallon on Monday. That's up 6.4 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  13. Gasoline prices continue to increase (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    Gasoline prices continue to increase (short version) The U.S. average retail price for regular gasoline rose to $3.48 a gallon on Monday. That's up 3 ½ cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  14. Gasoline prices continue to increase (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    Gasoline prices continue to increase (short version) The U.S. average retail price for regular gasoline rose to $3.51 a gallon on Monday. That's up 3.3 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  15. Gasoline prices continue to increase (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    Gasoline prices continue to increase (short version) The U.S. average retail price for regular gasoline rose to $3.55 a gallon on Monday. That's up 3½ cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  16. Gasoline prices continue to increase (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    4, 2014 Gasoline prices continue to increase (short version) The U.S. average retail price for regular gasoline rose to $3.65 a gallon on Monday. That's up 5½ cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. This is Amerine Woodyard, with EIA, in Washington.

  17. Gasoline prices continue to increase (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    1, 2014 Gasoline prices continue to increase (short version) The U.S. average retail price for regular gasoline rose to $3.68 a gallon on Monday. That's up 3.2 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. This is Amerine Woodyard, with EIA, in Washington.

  18. Gasoline prices continue to rise (Short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    Gasoline prices continue to rise (short version) The U.S. average retail price for regular gasoline rose to $3.67 a gallon on Monday. That's up 7 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  19. Green Gasoline from Wood Using Carbona Gasification and Topsoe...

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

    ... would provide 36% of EISA cellulosic biofuel goal for 2022 - Projected gasoline ... * Bio-derived gasoline passed single-engine emission tests for EPA registration - ...

  20. Characterization of Pre-Commercial Gasoline Engine Particulates...

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

    Pre-Commercial Gasoline Engine Particulates Through Advanced Aerosol Methods Characterization of Pre-Commercial Gasoline Engine Particulates Through Advanced Aerosol Methods ...

  1. Design Case Summary: Production of Gasoline and Diesel from Biomass...

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

    Design Case Summary: Production of Gasoline and Diesel from Biomass via Fast Pyrolysis, Hydrotreating, and Hydrocracking Design Case Summary: Production of Gasoline and Diesel from ...

  2. Production of Gasoline and Diesel from Biomass via Fast Pyrolysis...

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

    Production of Gasoline and Diesel from Biomass via Fast Pyrolysis, Hydrotreating and Hydrocracking: A Design Case Production of Gasoline and Diesel from Biomass via Fast Pyrolysis, ...

  3. Load Expansion with Diesel/Gasoline RCCI for Improved Engine...

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

    with DieselGasoline RCCI for Improved Engine Efficiency and Emissions Load Expansion with DieselGasoline RCCI for Improved Engine Efficiency and Emissions This poster will ...

  4. Fact #890: September 14, 2015 Gasoline Prices Are Affected by...

    Broader source: Energy.gov (indexed) [DOE]

    Gasoline Prices Are Affected by Changes in Refinery Output File fotw890web.xlsx More Documents & Publications Fact 858 February 2, 2015 Retail Gasoline Prices in 2014 ...

  5. Impact of Ethanol Blending on U.S. Gasoline Prices

    SciTech Connect (OSTI)

    Not Available

    2008-11-01

    This study assesses the impact of ethanol blending on gasoline prices in the US today and the potential impact of ethanol on gasoline prices at higher blending concentrations.

  6. Oxidation characteristics of gasoline direct-injection (GDI)...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    characteristics of gasoline direct-injection (GDI) engine soot: Catalytic effects of ash and modified kinetic correlation Title Oxidation characteristics of gasoline...

  7. High Efficiency Clean Combustion Engine Designs for Gasoline...

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

    Engine Designs for Gasoline and Diesel Engines High Efficiency Clean Combustion Engine Designs for Gasoline and Diesel Engines 2009 DOE Hydrogen Program and Vehicle Technologies ...

  8. Fact #565: April 6, 2009 Household Gasoline Expenditures by Income...

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

    Household Gasoline Expenditures by Income Quintile Bar graph showing the household gasoline expenditures by income quintile in the years 1989, 1997, and 2007. For more detailed ...

  9. Dispensing Equipment Testing With Mid-Level Ethanol/Gasoline...

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

    Dispensing Equipment Testing With Mid-Level EthanolGasoline Test Fluid Dispensing Equipment Testing With Mid-Level EthanolGasoline Test Fluid The National Renewable Energy ...

  10. DOE's Gasoline/Diesel PM Split Study | Department of Energy

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

    3 DEER Conference Presentation: Desert Research Institute PDF icon 2003deerfujita.pdf More Documents & Publications DOE's GasolineDiesel PM Split Study DOE's GasolineDiesel PM ...

  11. Theory Of Alkyl Terminated Silicon Quantum Dots

    SciTech Connect (OSTI)

    Reboredo, F; Galli, G

    2004-08-19

    We have carried out a series of ab-initio calculations to investigate changes in the optical properties of Si quantum dots as a function of surface passivation. In particular, we have compared hydrogen passivated dots with those having alkyl groups at the surface. We find that, while on clusters with reconstructed surfaces a complete alkyl passivation is possible, steric repulsion prevents full passivation of Si dots with unreconstructed surfaces. In addition, our calculations show that steric repulsion may have a dominant effect in determining the surface structure, and eventually the stability of alkyl passivated clusters, with results dependent on the length of the carbon chain. Alkyl passivation weakly affects optical gaps of silicon quantum dots, while it substantially decreases ionization potentials and electron affinities and affect their excited state properties. On the basis of our results we propose that alkyl terminated quantum dots may be size selected taking advantage of the change in ionization potential as a function of the cluster size.

  12. Electrophilic Metal Alkyl Chemistry in New Ligand Environments...

    Office of Scientific and Technical Information (OSTI)

    Technical Report: Electrophilic Metal Alkyl Chemistry in New Ligand Environments Citation Details In-Document Search Title: Electrophilic Metal Alkyl Chemistry in New Ligand ...

  13. Alkylation of organic aromatic compounds

    DOE Patents [OSTI]

    Smith, Jr., Lawrence A.; Arganbright, Robert P.; Hearn, Dennis

    1994-01-01

    Aromatic compounds are alkylated in a catalytic distillation, wherein the catalyst structure also serves as a distillation component by contacting the aromatic compound with a C.sub.2 to C.sub.10 olefin in the catalyst bed under 0.25 to 50 atmospheres of pressure and at temperatures in the range of 80.degree. C. to 500.degree. C., using as the catalyst a mole sieve characterized as acidic or an acidic cation exchange resin. For example, ethyl benzene is produced by feeding ethylene below the catalyst bed while benzene is conveniently added through the reflux in molar excess to that required to react with ethylene, thereby reacting substantially all of the ethylene and recovering benzene as the principal overhead and ethyl benzene in the bottoms.

  14. Alkylation of organic aromatic compounds

    DOE Patents [OSTI]

    Smith, Jr., Lawrence A.; Arganbright, Robert P.; Hearn, Dennis

    1993-01-01

    Aromatic compounds are alkylated in a catalytic distillation, wherein the catalyst structure also serves as a distillation component by contacting the aromatic compound with a C.sub.2 to C.sub.10 olefin in the catalyst bed under 0.25 to 50 atmospheres of pressure and at temperatures in the range of 80.degree. C. to 500.degree. C., using as the catalyst a mole sieve characterized as acidic or an acidic cation exchange resin. For example, ethyl benzene is produced by feeding ethylene to about the mid point of the catalyst bed while benzene is conveniently added through the reflux in molar excess to that required to react with ethylene, thereby reacting substantially all of the ethylene and recovering benzene as the principal overhead and ethyl benzene in the bottoms.

  15. Alkylation of organic aromatic compounds

    DOE Patents [OSTI]

    Smith, Jr., Lawrence A.

    1989-01-01

    Aromatic compounds are alkylated in a catalytic distillation, wherein the catalyst structure also serves as a distillation component by contacting the aromatic compound with a C.sub.2 to C.sub.10 olefin in the catalyst bed under 0.25 to 50 atmospheres of pressure and at temperatures in the range of 80.degree. C. to 500.degree. C., using as the catalyst a mole sieve characterized as acidic or an acidic cation exchange resin. For example, ethyl benzene is produced by feeding ethylene below the catalyst bed while benzene is conveniently added through the reflux in molar excess to that required to react with ethylene, thereby reacting substantially all of the ethylene and recovering benzene as the principal overhead and ethyl benzene in the bottoms.

  16. Alkylation of organic aromatic compounds

    DOE Patents [OSTI]

    Smith, L.A. Jr.; Arganbright, R.P.; Hearn, D.

    1993-09-07

    Aromatic compounds are alkylated in a catalytic distillation, wherein the catalyst structure also serves as a distillation component by contacting the aromatic compound with a C[sub 2] to C[sub 10] olefin in the catalyst bed under 0.25 to 50 atmospheres of pressure and at temperatures in the range of 80 C to 500 C, using as the catalyst a molecular sieve characterized as acidic or an acidic cation exchange resin. For example, ethyl benzene is produced by feeding ethylene to about the mid point of the catalyst bed while benzene is conveniently added through the reflux in molar excess to that required to react with ethylene, thereby reacting substantially all of the ethylene and recovering benzene as the principal overhead and ethyl benzene in the bottoms. 1 figures.

  17. Alkylation of organic aromatic compounds

    DOE Patents [OSTI]

    Smith, L.A. Jr.; Arganbright, R.P.; Hearn, D.

    1994-06-14

    Aromatic compounds are alkylated in a catalytic distillation, wherein the catalyst structure also serves as a distillation component by contacting the aromatic compound with a C[sub 2] to C[sub 10] olefin in the catalyst bed under 0.25 to 50 atmospheres of pressure and at temperatures in the range of 80 C to 500 C, using as the catalyst a molecular sieve characterized as acidic or an acidic cation exchange resin. For example, ethyl benzene is produced by feeding ethylene below the catalyst bed while benzene is conveniently added through the reflux in molar excess to that required to react with ethylene, thereby reacting substantially all of the ethylene and recovering benzene as the principal overhead and ethyl benzene in the bottoms. 1 fig.

  18. Alkylation of organic aromatic compounds

    DOE Patents [OSTI]

    Smith, Jr., Lawrence A.; Arganbright, Robert P.; Hearn, Dennis

    1993-01-01

    Aromatic compounds are alkylated in a combination reactor/distillation column comprising a vessel suitable for operating between 70.degree. C. and 500.degree. C. and from 0.5 to 20 atmospheres pressure; an inert distillation packing in the lower one-third of said vessel; solid acidic catalytic material such as zeolites or an acidic cation exchange resin supported in the middle one-third of said vessel; and inert distillation packing in the upper one-third of said vessel. A benzene inlet is located near the upper end of the vessel; an olefin inlet is juxtaposed with said solid acidic catalytic material; a bottoms outlet is positioned near the bottom of said vessel for removing said cumene and ethyl benzene; and an overhead outlet is placed at the top of said vessel for removing any unreacted benzene and olefin.

  19. Alkylation of organic aromatic compounds

    DOE Patents [OSTI]

    Smith, L.A. Jr.; Arganbright, R.P.; Hearn, D.

    1993-01-05

    Aromatic compounds are alkylated in a combination reactor/distillation column comprising a vessel suitable for operating between 70 C and 500 C and from 0.5 to 20 atmospheres pressure; an inert distillation packing in the lower one-third of said vessel; solid acidic catalytic material such as zeolites or an acidic cation exchange resin supported in the middle one-third of said vessel; and inert distillation packing in the upper one-third of said vessel. A benzene inlet is located near the upper end of the vessel; an olefin inlet is juxtaposed with said solid acidic catalytic material; a bottoms outlet is positioned near the bottom of said vessel for removing said cumene and ethyl benzene; and an overhead outlet is placed at the top of said vessel for removing any unreacted benzene and olefin.

  20. Alkylation of organic aromatic compounds

    DOE Patents [OSTI]

    Smith, L.A. Jr.

    1989-07-18

    Aromatic compounds are alkylated in a catalytic distillation, wherein the catalyst structure also serves as a distillation component by contacting the aromatic compound with a C[sub 2] to C[sub 10] olefin in the catalyst bed under 0.25 to 50 atmospheres of pressure and at temperatures in the range of 80 C to 500 C, using as the catalyst a mole sieve characterized as acidic or an acidic cation exchange resin. For example, ethyl benzene is produced by feeding ethylene below the catalyst bed while benzene is conveniently added through the reflux in molar excess to that required to react with ethylene, thereby reacting substantially all of the ethylene and recovering benzene as the principal overhead and ethyl benzene in the bottoms. 1 fig.

  1. Assessment of Summer 1997 Motor Gasoline Price Increase

    Reports and Publications (EIA)

    1998-01-01

    Assesses the 1997 late summer gasoline market and some of the important issues surrounding that event.

  2. Gasoline prices up this week (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline rose to 3.78 a gallon on Monday. That's up 3.7 cents from a week ago and up almost 43 cents from 4 weeks ago,...

  3. Northeast Gasoline Supply Reserve | Department of Energy

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

    The Northeast region of the U.S. is particularly vulnerable to gasoline disruptions as a result of hurricanes and other natural events. Hurricane Sandy in 2012 caused widespread ...

  4. Gasoline prices inch down (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    Gasoline prices inch down (long version) The U.S. average retail price for regular ... Pump prices were highest in the West Coast region at 3.96 a gallon, down 4.2 cents from a ...

  5. Gasoline prices up this week (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    for regular gasoline rose to 3.75 a gallon on Monday. That's up almost 14 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  6. Gasoline prices inch down slightly (short version)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    short version) The U.S. average retail price for regular gasoline fell slightly to 3.54 a gallon on Monday. That's down 6-tenths of a penny from a week ago, based on the weekly...

  7. Inquiry into August 2003 Gasoline Price Spike

    Reports and Publications (EIA)

    2003-01-01

    U.S. Secretary of Energy Spencer Abraham requested that the Energy Information Administration conduct an inquiry into the causes of the price increases of gasoline in July and August of 2003.

  8. Gasoline prices inch down (Short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline rose slightly to 3.66 a gallon on Monday. That's up nine tenths of a penny from a week ago, based on the weekly ...

  9. Gasoline prices fall slightly (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline fell slightly to 3.49 a gallon on Monday. That's down 4-tenths of a penny from a week ago, based on the weekly ...

  10. Gasoline prices show sharp increase (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline saw its sharpest increase this year at 3.54 a gallon on Monday. That's up 18.1 cents from a week ago, based on ...

  11. Insights into Spring 2008 Gasoline Prices

    Reports and Publications (EIA)

    2008-01-01

    Gasoline prices rose rapidly in spring 2007 due a variety of factors, including refinery outages and lower than expected imports. This report explores those factors and looks at the implications for 2008.

  12. STEO January 2013 - average gasoline prices

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    At the same time, U.S. gasoline demand is expected to change little over the next two years as Americans buy more fuel-efficient vehicles.....and older gas guzzlers are retired

  13. Reformulated Gasoline Market Affected Refiners Differently, 1995

    Reports and Publications (EIA)

    1996-01-01

    This article focuses on the costs of producing reformulated gasoline (RFG) as experienced by different types of refiners and on how these refiners fared this past summer, given the prices for RFG at the refinery gate.

  14. Alternative Fuels Data Center: Michigan Fleet Reduces Gasoline and Diesel

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    Use Michigan Fleet Reduces Gasoline and Diesel Use to someone by E-mail Share Alternative Fuels Data Center: Michigan Fleet Reduces Gasoline and Diesel Use on Facebook Tweet about Alternative Fuels Data Center: Michigan Fleet Reduces Gasoline and Diesel Use on Twitter Bookmark Alternative Fuels Data Center: Michigan Fleet Reduces Gasoline and Diesel Use on Google Bookmark Alternative Fuels Data Center: Michigan Fleet Reduces Gasoline and Diesel Use on Delicious Rank Alternative Fuels Data

  15. Summer 2003 Motor Gasoline Outlook.doc

    Gasoline and Diesel Fuel Update (EIA)

    3 1 Short-Term Energy Outlook April 2003 Summer 2003 Motor Gasoline Outlook Summary For the upcoming summer season (April to September 2003), high crude oil costs and other factors are expected to yield average retail motor gasoline prices higher than those of last year. Current crude oil prices reflect a substantial uncertainty premium due to concerns about the current conflict in the Persian Gulf, lingering questions about whether Venezuelan oil production will recover to near pre-strike

  16. Education Highlights: Gasoline Compression Ignition | Argonne National

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Laboratory Education Highlights: Gasoline Compression Ignition Share Description Argonne intern Kendyl Partridge from Mississippi State University worked with Argonne mentor Steve Ciatti of the Energy Systems division in studying gasoline compression ignition engines. This research will help engineers increase an engine's efficiency while reducing its environmental impact. Speakers Kendyl Partridge, Argonne National Laboratory Intern from Mississippi State University Duration 1:56 Topic

  17. U.S. average gasoline prices falling to near $2 in December

    U.S. Energy Information Administration (EIA) Indexed Site

    In its new forecast, the U.S. Energy Information Administration said high gasoline production, cheaper winter-grade gasoline, and lower gasoline demand following this summer's peak ...

  18. The potential for low petroleum gasoline

    SciTech Connect (OSTI)

    Hadder, G.R.; Webb, G.M.; Clauson, M.

    1996-06-01

    The Energy Policy Act requires the Secretary of Energy to determine the feasibility of producing sufficient replacement fuels to replace at least 30 percent of the projected consumption of motor fuels by light duty vehicles in the year 2010. The Act also requires the Secretary to determine the greenhouse gas implications of the use of replacement fuels. A replacement fuel is a non-petroleum portion of gasoline, including certain alcohols, ethers, and other components. The Oak Ridge National Laboratory Refinery Yield Model has been used to study the cost and refinery impacts for production of {open_quotes}low petroleum{close_quotes} gasolines, which contain replacement fuels. The analysis suggests that high oxygenation is the key to meeting the replacement fuel target, and a major contributor to cost increase is investment in processes to produce and etherify light olefins. High oxygenation can also increase the costs of control of vapor pressure, distillation properties, and pollutant emissions of gasolines. Year-round low petroleum gasoline with near-30 percent non-petroleum components might be produced with cost increases of 23 to 37 cents per gallon of gasoline, and with greenhouse gas emissions changes between a 3 percent increase and a 16 percent decrease. Crude oil reduction, with decreased dependence on foreign sources, is a major objective of the low petroleum gasoline program. For year-round gasoline with near-30 percent non-petroleum components, crude oil use is reduced by 10 to 12 percent, at a cost $48 to $89 per barrel. Depending upon resolution of uncertainties about extrapolation of the Environmental Protection Agency Complex Model for pollutant emissions, availability of raw materials and other issues, costs could be lower or higher.

  19. Gasoline from Wood via Integrated Gasification, Synthesis, and Methanol-to-Gasoline Technologies

    SciTech Connect (OSTI)

    Phillips, S. D.; Tarud, J. K.; Biddy, M. J.; Dutta, A.

    2011-01-01

    This report documents the National Renewable Energy Laboratory's (NREL's) assessment of the feasibility of making gasoline via the methanol-to-gasoline route using syngas from a 2,000 dry metric tonne/day (2,205 U.S. ton/day) biomass-fed facility. A new technoeconomic model was developed in Aspen Plus for this study, based on the model developed for NREL's thermochemical ethanol design report (Phillips et al. 2007). The necessary process changes were incorporated into a biomass-to-gasoline model using a methanol synthesis operation followed by conversion, upgrading, and finishing to gasoline. Using a methodology similar to that used in previous NREL design reports and a feedstock cost of $50.70/dry ton ($55.89/dry metric tonne), the estimated plant gate price is $16.60/MMBtu ($15.73/GJ) (U.S. $2007) for gasoline and liquefied petroleum gas (LPG) produced from biomass via gasification of wood, methanol synthesis, and the methanol-to-gasoline process. The corresponding unit prices for gasoline and LPG are $1.95/gallon ($0.52/liter) and $1.53/gallon ($0.40/liter) with yields of 55.1 and 9.3 gallons per U.S. ton of dry biomass (229.9 and 38.8 liters per metric tonne of dry biomass), respectively.

  20. Motor Gasoline Market Model documentation report

    SciTech Connect (OSTI)

    Not Available

    1993-09-01

    The purpose of this report is to define the objectives of the Motor Gasoline Market Model (MGMM), describe its basic approach and to provide detail on model functions. This report is intended as a reference document for model analysts, users, and the general public. The MGMM performs a short-term (6- to 9-month) forecast of demand and price for motor gasoline in the US market; it also calculates end of month stock levels. The model is used to analyze certain market behavior assumptions or shocks and to determine the effect on market price, demand and stock level.

  1. Gasoline prices continue to decrease (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    3, 2014 Gasoline prices continue to decrease (long version) The U.S. average retail price for regular gasoline fell to $3.29 a gallon on Monday. That's down 3-tenths of a penny from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. Pump prices were highest in the West Coast states at 3.49 a gallon, up 6-tenths of a penny from a week ago. Prices were lowest in the Gulf Coast region at 3.08 a gallon, down 9-tenths of a penny. This is Amerine Woodyard, with

  2. Gasoline prices continue to decrease (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    19, 2014 Gasoline prices continue to decrease (long version) The U.S. average retail price for regular gasoline fell to $3.67 a gallon on Monday. That's down 3-tenths of a penny from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. Pump prices were highest in the West Coast states at 4.02 a gallon, down 7-tenths of a penny from a week ago. Prices were lowest in the Gulf Coast region at 3.44 a gallon, up 2-tenths of a penny.

  3. Gasoline prices continue to fall (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    Gasoline prices continue to fall (long version) The U.S. average retail price for regular gasoline decreased for the second week in a row to $3.71 a gallon on Monday. That's down 4.9 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. Pump prices were highest in the West Coast region at 4.05 a gallon, down 2 cents from a week ago. Prices were lowest in the Rocky Mountain States at 3.47 a gallon, down 7-tenths of a penny

  4. Gasoline prices continue to fall (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    Gasoline prices continue to fall (long version) The U.S. average retail price for regular gasoline fell to $3.61 a gallon on Monday. That's down 3.7 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. Pump prices were highest in the West Coast region at 3.93 a gallon, down 1.7 cents from a week ago. Prices were lowest in the Gulf Coast States at 3.43 a gallon, down 4.6

  5. Gasoline prices continue to increase (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    , 2014 Gasoline prices continue to increase (long version) The U.S. average retail price for regular gasoline rose to $3.48 a gallon on Monday. That's up 3 ½ cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. Pump prices were highest in the West Coast states at 3.71 a gallon, up 5.6 cents from a week ago. Prices were lowest in the Gulf Coast region at 3.23 a gallon, up 1.8 cents. This is Marcela Rourk, with EIA, in Washington.

  6. Gasoline prices continue to increase (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    March 10, 2014 Gasoline prices continue to increase (long version) The U.S. average retail price for regular gasoline rose to $3.51 a gallon on Monday. That's up 3.3 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. Pump prices were highest in the West Coast states at 3.76 a gallon, up 4.7 cents from a week ago. Prices were lowest in the Gulf Coast region at 3.25 a gallon, up 2 ½ cents.

  7. Gasoline prices continue to increase (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    7, 2014 Gasoline prices continue to increase (long version) The U.S. average retail price for regular gasoline rose to $3.55 a gallon on Monday. That's up 3½ cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. Pump prices were highest in the West Coast states at 3.81 a gallon, up 5½ cents from a week ago. Prices were lowest in the Gulf Coast region at 3.28 a gallon, up 3.1 cents. This is Marcela Rourk, with EIA, in Washington.

  8. Gasoline prices continue to increase (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    14, 2014 Gasoline prices continue to increase (long version) The U.S. average retail price for regular gasoline rose to $3.65 a gallon on Monday. That's up 5½ cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. Pump prices were highest in the West Coast states at 3.98 a gallon, up 9.7 cents from a week ago. Prices were lowest in the Rocky Mountain states at 3.44 a gallon, down 8-tenths of a penny

  9. Gasoline prices continue to increase (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    21, 2014 Gasoline prices continue to increase (long version) The U.S. average retail price for regular gasoline rose to $3.68 a gallon on Monday. That's up 3.2 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. Pump prices were highest in the West Coast states at 4.03 a gallon, up a nickel from a week ago. Prices were lowest in the Rocky Mountain states at 3.45 a gallon, up 8-tenths of a penny

  10. Gasoline prices continue to increase (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    24, 2014 Gasoline prices continue to increase (long version) The U.S. average retail price for regular gasoline rose to $3.44 a gallon on Monday. That's up 6.4 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. Pump prices were highest in the West Coast states at 3.65 a gallon, up 8 cents from a week ago. Prices were lowest in the Gulf Coast region at 3.21 a gallon, up

  11. Gasoline prices continue to rise (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    Gasoline prices continue to rise (long version) The U.S. average retail price for regular gasoline rose to $3.67 a gallon on Monday. That's up 7 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. Pump prices were highest in the West Coast region at 3.95 a gallon, up 1.4 cents from a week ago. Prices were lowest in the Gulf Coast States at 3.39 a gallon, up 2.8 cents. The Midwest region boasted the highest weekly increase at 18.8 cents with

  12. What Drives U.S. Gasoline Prices?

    U.S. Energy Information Administration (EIA) Indexed Site

    What Drives U.S. Gasoline Prices? October 2014 Independent Statistics & Analysis www.eia.gov U.S. Department of Energy Washington, DC 20585 U.S. Energy Information Administration | What Drives U.S. Gasoline Prices? i This report was prepared by the U.S. Energy Information Administration (EIA), the statistical and analytical agency within the U.S. Department of Energy. By law, EIA's data, analyses, and forecasts are independent of approval by any other officer or employee of the United States

  13. Fact #835: August 25, 2014 Average Annual Gasoline Pump Price...

    Broader source: Energy.gov (indexed) [DOE]

    35: Average Annual Gasoline Pump Price, 1929-2013 File fotw835web.xlsx More Documents & Publications Fact 915: March 7, 2016 Average Historical Annual Gasoline Pump Price, ...

  14. U.S. gasoline price falls under $3 (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    November 3, 2014 U.S. gasoline price falls under 3 (long version) The U.S. average retail price for regular gasoline fell to its lowest level since December 2010 at 2.99 a gallon ...

  15. Gasoline prices decrease nationally for first time in 4 weeks...

    U.S. Energy Information Administration (EIA) Indexed Site

    3, 2014 U.S. gasoline prices continue to increase (long version) The U.S. average retail price for regular gasoline rose to 3.70 a gallon on Monday. That's up 1.8 cents from a ...

  16. Gasoline prices decrease nationally for first time in 4 weeks...

    U.S. Energy Information Administration (EIA) Indexed Site

    26, 2014 Gasoline prices increase (long version) The U.S. average retail price for regular gasoline rose to 3.67 a gallon on Monday. That's up 9- tenths of a penny from a week ...

  17. Gasoline prices decrease nationally for first time in 4 weeks...

    U.S. Energy Information Administration (EIA) Indexed Site

    Gasoline prices decrease nationally for first time in 4 weeks (short version) The U.S. average retail price for regular gasoline fell for the first time in 4 weeks to 3.33 a ...

  18. Gasoline prices decrease nationally for first time in 4 weeks...

    U.S. Energy Information Administration (EIA) Indexed Site

    Gasoline prices continue to increase (short version) The U.S. average retail price for regular gasoline rose to 3.38 a gallon on Monday. That's up 7.1 cents from a week ago, based ...

  19. Gasoline prices decrease nationally for first time in 4 weeks...

    U.S. Energy Information Administration (EIA) Indexed Site

    Gasoline prices continue to decrease (short version) The U.S. average retail price for regular gasoline fell to 3.30 a gallon on Monday. That's down 1-tenth of a penny from a week ...

  20. Gasoline prices decrease nationally for first time in 4 weeks...

    U.S. Energy Information Administration (EIA) Indexed Site

    4, 2014 Gasoline prices continue to increase (short version) The U.S. average retail price for regular gasoline rose to 3.60 a gallon on Monday. That's up 1.7 cents from a week ...

  1. Gasoline prices decrease nationally for first time in 4 weeks...

    U.S. Energy Information Administration (EIA) Indexed Site

    Gasoline prices increase (short version) The U.S. average retail price for regular gasoline rose to 3.67 a gallon on Monday. That's up 9- tenths of a penny from a week ago, based ...

  2. Gasoline prices decrease nationally for first time in 4 weeks...

    U.S. Energy Information Administration (EIA) Indexed Site

    4, 2014 Gasoline prices continue to increase (long version) The U.S. average retail price for regular gasoline rose to 3.60 a gallon on Monday. That's up 1.7 cents from a week ...

  3. Gasoline prices decrease nationally for first time in 4 weeks...

    U.S. Energy Information Administration (EIA) Indexed Site

    gasoline prices continue to increase (short version) The U.S. average retail price for regular gasoline rose to 3.70 a gallon on Monday. That's up 1.8 cents from a week ago, based ...

  4. Gasoline prices decrease nationally for first time in 4 weeks...

    U.S. Energy Information Administration (EIA) Indexed Site

    2, 2014 Gasoline prices continue to decrease (long version) The U.S. average retail price for regular gasoline fell to 3.67 a gallon on Monday. That's down 1.6 cents from a week ...

  5. Gasoline prices decrease nationally for first time in 4 weeks...

    U.S. Energy Information Administration (EIA) Indexed Site

    Gasoline prices continue to decrease (short version) The U.S. average retail price for regular gasoline fell to 3.67 a gallon on Monday. That's down 1.6 cents from a week ago, ...

  6. Gasoline prices decrease nationally for first time in 4 weeks...

    U.S. Energy Information Administration (EIA) Indexed Site

    Gasoline prices continue to increase (short version) The U.S. average retail price for regular gasoline rose to 3.58 a gallon on Monday. That's up 3 cents from a week ago, based ...

  7. Gasoline prices decrease nationally for first time in 4 weeks...

    U.S. Energy Information Administration (EIA) Indexed Site

    June 9, 2014 U.S. gasoline prices decrease for first time in three weeks (long version) The U.S. average retail price for regular gasoline fell for the first time in three weeks to ...

  8. Fact #569: May 4, 2009 Gasoline Prices Around the World

    Broader source: Energy.gov [DOE]

    A survey of worldwide gasoline prices for February and March, 2009, shows that European countries had the highest prices for gasoline with the Netherlands topping the list at $6.25 per gallon. The...

  9. Motor Gasoline Market Spring 2007 and Implications for Spring 2008

    Reports and Publications (EIA)

    2008-01-01

    This report focuses on the major factors that drove the widening difference between wholesale gasoline and crude oil prices in 2007 and explores how those factors might impact gasoline prices in 2008.

  10. Enhancement of alkylation catalysts for improved supercritical fluid regeneration

    DOE Patents [OSTI]

    Ginosar, Daniel M. (Idaho Falls, ID); Petkovic, Lucia (Idaho Falls, ID)

    2009-09-22

    A method of modifying an alkylation catalyst to reduce the formation of condensed hydrocarbon species thereon. The method comprises providing an alkylation catalyst comprising a plurality of active sites. The plurality of active sites on the alkylation catalyst may include a plurality of weakly acidic active sites, intermediate acidity active sites, and strongly acidic active sites. A base is adsorbed to a portion of the plurality of active sites, such as the strongly acidic active sites, selectively poisoning the strongly acidic active sites. A method of modifying the alkylation catalyst by providing an alkylation catalyst comprising a pore size distribution that sterically constrains formation of the condensed hydrocarbon species on the alkylation catalyst or by synthesizing the alkylation catalyst to comprise a decreased number of strongly acidic active sites is also disclosed, as is a method of improving a regeneration efficiency of the alkylation catalyst.

  11. Enhancement of alkylation catalysts for improved supercritical fluid regeneration

    DOE Patents [OSTI]

    Ginosar, Daniel M. (Idaho Falls, ID); Petkovic, Lucia M. (Idaho Falls, ID)

    2010-12-28

    A method of modifying an alkylation catalyst to reduce the formation of condensed hydrocarbon species thereon. The method comprises providing an alkylation catalyst comprising a plurality of active sites. The plurality of active sites on the alkylation catalyst may include a plurality of weakly acidic active sites, intermediate acidity active sites, and strongly acidic active sites. A base is adsorbed to a portion of the plurality of active sites, such as the strongly acidic active sites, selectively poisoning the strongly acidic active sites. A method of modifying the alkylation catalyst by providing an alkylation catalyst comprising a pore size distribution that sterically constrains formation of the condensed hydrocarbon species on the alkylation catalyst or by synthesizing the alkylation catalyst to comprise a decreased number of strongly acidic active sites is also disclosed, as is a method of improving a regeneration efficiency of the alkylation catalyst.

  12. Note on the structural stability of gasoline demand and the welfare economics of gasoline taxation

    SciTech Connect (OSTI)

    Kwast, M.L.

    1980-04-01

    A partial adjustment model is used to investigate how the 1973 to 1974 oil embargo affected the structural stability of gasoline demand and to compute the welfare effects of higher gasoline taxes. A variety of statistical tests are used to demonstrate the structural stability of gasoline demand in spite of higher prices. A case study demonstrates only modest price elasticity in response to increased taxes. Higher excise taxes are felt to be justified, however, as an efficient source of revenue even though their effect on demand is limited. 17 references, 4 tables. (DCK)

  13. Why Do Motor Gasoline Prices Vary Regionally? California Case Study

    Reports and Publications (EIA)

    1998-01-01

    Analysis of the difference between the retail gasoline prices in California and the average U.S. retail prices.

  14. National Survey of E85 and Gasoline Prices

    SciTech Connect (OSTI)

    Bergeron, P.

    2008-10-01

    Study compares the prices of E85 and regular gasoline nationally and regionally over time for one year.

  15. Demand and Price Outlook for Phase 2 Reformulated Gasoline, 2000

    Gasoline and Diesel Fuel Update (EIA)

    Demand and Price Outlook for Phase 2 Reformulated Gasoline, 2000 Tancred Lidderdale and Aileen Bohn (1) Contents * Summary * Introduction * Reformulated Gasoline Demand * Oxygenate Demand * Logistics o Interstate Movements and Storage o Local Distribution o Phase 2 RFG Logistics o Possible Opt-Ins to the RFG Program o State Low Sulfur, Low RVP Gasoline Initiatives o NAAQS o Tier 2 Gasoline * RFG Production Options o Toxic Air Pollutants (TAP) Reduction o Nitrogen Oxides (NOx) Reduction o

  16. DOE Gasoline Price Watch Website and Hotline | Department of Energy

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

    Gasoline Price Watch Website and Hotline DOE Gasoline Price Watch Website and Hotline April 20, 2006 - 12:26pm Addthis WASHINGTON, DC - Secretary of Energy Samuel W. Bodman today is reminding consumers about the Department of Energy's (DOE) gasoline price reporting system. Consumers can report activity at local gasoline filling stations that they believe may constitute "gouging" or "price fixing" by visiting gaswatch.energy.gov/. "There are many legitimate factors

  17. HCCI experiments with gasoline surrogate fuels modeled by a semidetailed chemical kinetic model

    SciTech Connect (OSTI)

    Andrae, J.C.G.; Head, R.A.

    2009-04-15

    Experiments in a homogeneous charge compression ignition (HCCI) engine have been conducted with four gasoline surrogate fuel blends. The pure components in the surrogate fuels consisted of n-heptane, isooctane, toluene, ethanol and diisobutylene and fuel sensitivities (RON-MON) in the fuel blends ranged from two to nine. The operating conditions for the engine were p{sub in}=0.1 and 0.2 MPa, T{sub in}=80 and 250 C, {phi}=0.25 in air and engine speed 1200 rpm. A semidetailed chemical kinetic model (142 species and 672 reactions) for gasoline surrogate fuels, validated against ignition data from experiments conducted in shock tubes for gasoline surrogate fuel blends at 1.0{<=} p{<=}5.0MPa, 700{<=} T{<=}1200 K and {phi}=1.0, was successfully used to qualitatively predict the HCCI experiments using a single zone modeling approach. The fuel blends that had higher fuel sensitivity were more resistant to autoignition for low intake temperature and high intake pressure and less resistant to autoignition for high intake temperature and low intake pressure. A sensitivity analysis shows that at high intake temperature the chemistry of the fuels ethanol, toluene and diisobutylene helps to advance ignition. This is consistent with the trend that fuels with the least Negative Temperature Coefficient (NTC) behavior show the highest octane sensitivity, and become less resistant to autoignition at high intake temperatures. For high intake pressure the sensitivity analysis shows that fuels in the fuel blend with no NTC behavior consume OH radicals and acts as a radical scavenger for the fuels with NTC behavior. This is consistent with the observed trend of an increase in RON and fuel sensitivity. With data from shock tube experiments in the literature and HCCI modeling in this work, a correlation between the reciprocal pressure exponent on the ignition delay to the fuel sensitivity and volume percentage of single-stage ignition fuel in the fuel blend was found. Higher fuel sensitivity and single-stage fuel content generally gives a lower value of the pressure exponent. This helps to explain the results obtained while boosting the intake pressure in the HCCI engine. (author)

  18. Poly(ethyleneoxide) functionalization through alkylation

    DOE Patents [OSTI]

    Sivanandan, Kulandaivelu; Eitouni, Hany Basam; Li, Yan; Pratt, Russell Clayton

    2015-04-21

    A new and efficient method of functionalizing high molecular weight polymers through alkylation using a metal amide base is described. This novel procedure can also be used to synthesize polymer-based macro-initiators containing radical initiating groups at the chain-ends for synthesis of block copolymers.

  19. Gasoline prices up this week (short version)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    short version) The U.S. average retail price for regular gasoline rose to 3.61 a gallon on Monday. That's up 7.3 cents from a week ago and up 25.4 cents from two weeks ago, based...

  20. Eliminating MTBE in Gasoline in 2006

    Reports and Publications (EIA)

    2006-01-01

    A review of the market implications resulting from the rapid change from methyl tertiary butyl ether (MTBE) to ethanol-blended reformulated gasoline (RFG) on the East Coast and in Texas. Strains in ethanol supply and distribution will increase the potential for price volatility in these regions this summer.

  1. Gasoline price shows small increase (Short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    shows small increase (Short version) The U.S. average retail price for regular gasoline rose to $3.32 a gallon on Monday. That's up 1.2 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  2. Gasoline price shows small increase (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    Short version) The U.S. average retail price for regular gasoline showed little movement from last week. Prices rose 4/10 of a cent to $3.30 a gallon on Monday, based on the weekly price survey by the U.S. Energy Information Administration.

  3. Gasoline price up this week (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline rose to $3.36 a gallon on Monday. That's up 4.2 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  4. Gasoline prices continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    (short version) The U.S. average retail price for regular gasoline fell to $3.65 a gallon on Monday. That's down 3 1/2 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. This is Amerine Woodyard, with EIA, in Washington.

  5. Gasoline prices continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline fell to $3.50 a gallon on Monday. That's down 8.1 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  6. Gasoline prices continue to fall (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    (short version) The U.S. average retail price for regular gasoline fell to $3.54 a gallon on Monday. That's down 6.6 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  7. Gasoline prices continue to fall (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    (short version) The U.S. average retail price for regular gasoline decreased for the second week in a row to $3.71 a gallon on Monday. That's down 4.9 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. This is Amerine Woodyard, with EIA, in Washington.

  8. Gasoline prices continue to fall (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline fell to $3.70 a gallon on Monday. That's down 1.4 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. This is Amerine Woodyard, with EIA, in Washington.

  9. Gasoline prices continue to fall (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline fell to $3.61 a gallon on Monday. That's down 3.7 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. This is Amerine Woodyard, with EIA, in Washington.

  10. Gasoline prices continue to fall (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline fell to $3.52 a gallon on Monday. That's down 1.6 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  11. Diesel vs Gasoline Production | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    A look at refinery decisions that decide "swing" between diesel and gasoline production PDF icon deer08_leister.pdf More Documents & Publications Marathon Sees Diesel Fuel in Future ITP Petroleum Refining: Energy Bandwidth for Petroleum Refining Processes ITP Petroleum Refining: Profile of the Petroleum Refining Industry in California: California Industries of the Future Program

  12. Price changes in the gasoline market: Are Midwestern gasoline prices downward sticky?

    SciTech Connect (OSTI)

    1999-03-01

    This report examines a recurring question about gasoline markets: why, especially in times of high price volatility, do retail gasoline prices seem to rise quickly but fall back more slowly? Do gasoline prices actually rise faster than they fall, or does this just appear to be the case because people tend to pay more attention to prices when they`re rising? This question is more complex than it might appear to be initially, and it has been addressed by numerous analysts in government, academia and industry. The question is very important, because perceived problems with retail gasoline pricing have been used in arguments for government regulation of prices. The phenomenon of prices at different market levels tending to move differently relative to each other depending on direction is known as price asymmetry. This report summarizes the previous work on gasoline price asymmetry and provides a method for testing for asymmetry in a wide variety of situations. The major finding of this paper is that there is some amount of asymmetry and pattern asymmetry, especially at the retail level, in the Midwestern states that are the focus of the analysis. Nevertheless, both the amount asymmetry and pattern asymmetry are relatively small. In addition, much of the pattern asymmetry detected in this and previous studies could be a statistical artifact caused by the time lags between price changes at different points in the gasoline distribution system. In other words, retail gasoline prices do sometimes rise faster than they fall, but this is largely a lagged market response to an upward shock in the underlying wholesale gasoline or crude oil prices, followed by a return toward the previous baseline. After consistent time lags are factored out, most apparent asymmetry disappears.

  13. Analysis of Thermal and Chemical Effets on Negative Valve Overlap Period Energy Recovery for Low-Temperature Gasoline Combustion

    SciTech Connect (OSTI)

    Ekoto, Dr Isaac; Peterson, Dr. Brian; Szybist, James P; Northrop, Dr. William

    2015-01-01

    A central challenge for efficient auto-ignition controlled low-temperature gasoline combustion (LTGC) engines has been achieving the combustion phasing needed to reach stable performance over a wide operating regime. The negative valve overlap (NVO) strategy has been explored as a way to improve combustion stability through a combination of charge heating and altered reactivity via a recompression stroke with a pilot fuel injection. The study objective was to analyze the thermal and chemical effects on NVO-period energy recovery. The analysis leveraged experimental gas sampling results obtained from a single-cylinder LTGC engine along with cylinder pressure measurements and custom data reduction methods used to estimate period thermodynamic properties. The engine was fueled by either iso-octane or ethanol, and operated under sweeps of NVO-period oxygen concentration, injection timing, and fueling rate. Gas sampling at the end of the NVO period was performed via a custom dump-valve apparatus, with detailed sample speciation by in-house gas chromatography. The balance of NVO-period input and output energy flows was calculated in terms of fuel energy, work, heat loss, and change in sensible energy. Experiment results were complemented by detailed chemistry single-zone reactor simulations performed at relevant mixing and thermodynamic conditions, with results used to evaluate ignition behavior and expected energy recovery yields. For the intermediate bulk-gas temperatures present during the NVO period (900-1100 K), weak negative temperature coefficient behavior with iso-octane fueling significantly lengthened ignition delays relative to similar ethanol fueled conditions. Faster ethanol ignition chemistry led to lower recovered fuel intermediate yields relative to similar iso-octane fueled conditions due to more complete fuel oxidation. From the energy analysis it was found that increased NVO-period global equivalence ratio, either from lower NVOperiod oxygen concentrations or higher fueling rates, in general led to a greater fraction of net recovered fuel energy and work as heat losses were minimized. These observations were supported by complementary single-zone reactor model results, which further indicated that kinetic time-scales favor chemical energy-consuming exothermic oxidation over slower endothermic reformation. Nonetheless, fuel energy recovery close to the thermodynamic equilibrium solution was achieved for baseline conditions that featured 4% NVO-period oxygen concentration.

  14. PROCESS FOR PRODUCING ALKYL ORTHOPHOSPHORIC ACID EXTRACTANTS

    DOE Patents [OSTI]

    Grinstead, R.R.

    1962-01-23

    A process is given for producing superior alkyl orthophosphoric acid extractants for use in solvent extraction methods to recover and purify various metals such as uranium and vanadium. The process comprises slurrying P/sub 2/O/ sub 5/ in a solvent diluent such as kerosene, benzene, isopropyl ether, and the like. An alipbatic alcohol having from nine to seventeen carbon atoms, and w- hcrein ihc OH group is situated inward of the terminal carbon atoms, is added to the slurry while the reaction temperature is mainiained below 60 deg C. The alcohol is added in the mole ratio of about 2 to l, alcohol to P/sub 2/O/sub 5/. A pyrophosphate reaotion product is formed in the slurry-alcohol mixture. Subsequently, the pyrophosphate reaction product is hydrolyzed with dilute mineral acid to produce the desired alkyl orthophosphoric aeid extractant. The extraetant may then be separated and utilized in metal-recovery, solvent- extraction processes. (AEC)

  15. ALKYL PYROPHOSPHATE METAL SOLVENT EXTRACTANTS AND PROCESS

    DOE Patents [OSTI]

    Long, R.L.

    1958-09-30

    A process is presented for the recovery of uranium from aqueous mineral acidic solutions by solvent extraction. The extractant is a synmmetrical dialkyl pyrophosphate in which the alkyl substituents have a chain length of from 4 to 17 carbon atoms. Mentioned as a preferred extractant is dioctyl pyrophosphate. The uranium is precipitated irom the organic extractant phase with an agent such as HF, fluoride salts. alcohol, or ammonia.

  16. Detailed Kinetic Modeling of Gasoline Surrogate Mixtures

    SciTech Connect (OSTI)

    Mehl, M; Curran, H J; Pitz, W J; Westbrook, C K

    2009-03-09

    Real fuels are complex mixtures of thousands of hydrocarbon compounds including linear and branched paraffins, naphthenes, olefins and aromatics. It is generally agreed that their behavior can be effectively reproduced by simpler fuel surrogates containing a limited number of components. In this work, a recently revised version of the kinetic model by the authors is used to analyze the combustion behavior of several components relevant to gasoline surrogate formulation. Particular attention is devoted to linear and branched saturated hydrocarbons (PRF mixtures), olefins (1-hexene) and aromatics (toluene). Model predictions for pure components, binary mixtures and multi-component gasoline surrogates are compared with recent experimental information collected in rapid compression machine, shock tube and jet stirred reactors covering a wide range of conditions pertinent to internal combustion engines. Simulation results are discussed focusing attention on the mixing effects of the fuel components.

  17. Reformulated gasoline deal with Venezuela draws heat

    SciTech Connect (OSTI)

    Begley, R.

    1994-04-06

    A fight is brewing in Congress over a deal to let Venezuela off the hook in complying with the Clean Air Act reformulated gasoline rule. When Venezuela threatened to call for a GATT panel to challenge the rule as a trade barrier, the Clinton Administration negotiated to alter the rule, a deal that members of Congress are characterizing as {open_quotes}secret{close_quotes} and {open_quotes}back door.{close_quotes}

  18. CREATING THE NORTHEAST GASOLINE SUPPLY RESERVE

    Broader source: Energy.gov [DOE]

    In 2012, Superstorm Sandy made landfall in the northeastern United States and caused heavy damage to two refineries and left more than 40 terminals in New York Harbor closed due to water damage and loss of power. This left some New York gas stations without fuel for as long as 30 days. As part of the Obama Administration’s ongoing response to the storm, the Department of Energy created the first federal regional refined product reserve, the Northeast Gasoline Supply Reserve.

  19. European Lean Gasoline Direct Injection Vehicle Benchmark

    SciTech Connect (OSTI)

    Chambon, Paul H; Huff, Shean P; Edwards, Kevin Dean; Norman, Kevin M; Prikhodko, Vitaly Y; Thomas, John F

    2011-01-01

    Lean Gasoline Direct Injection (LGDI) combustion is a promising technical path for achieving significant improvements in fuel efficiency while meeting future emissions requirements. Though Stoichiometric Gasoline Direct Injection (SGDI) technology is commercially available in a few vehicles on the American market, LGDI vehicles are not, but can be found in Europe. Oak Ridge National Laboratory (ORNL) obtained a European BMW 1-series fitted with a 2.0l LGDI engine. The vehicle was instrumented and commissioned on a chassis dynamometer. The engine and after-treatment performance and emissions were characterized over US drive cycles (Federal Test Procedure (FTP), the Highway Fuel Economy Test (HFET), and US06 Supplemental Federal Test Procedure (US06)) and steady state mappings. The vehicle micro hybrid features (engine stop-start and intelligent alternator) were benchmarked as well during the course of that study. The data was analyzed to quantify the benefits and drawbacks of the lean gasoline direct injection and micro hybrid technologies from a fuel economy and emissions perspectives with respect to the US market. Additionally that data will be formatted to develop, substantiate, and exercise vehicle simulations with conventional and advanced powertrains.

  20. Detailed Chemical Kinetic Modeling of Iso-octane SI-HCCI Transition

    SciTech Connect (OSTI)

    Havstad, Mark A; Aceves, Salvador M; McNenly, Matthew J; Piggott, William T; Edwards, Kevin Dean; Wagner, Robert M; Daw, C Stuart; FINNEY, Charles E A

    2010-01-01

    We describe a CHEMKIN-based multi-zone model that simulates the expected combustion variations in a single-cylinder engine fueled with iso-octane as the engine transitions from spark-ignited (SI) combustion to homogenous charge compression ignition (HCCI) combustion. The model includes a 63-species reaction mechanism and mass and energy balances for the cylinder and the exhaust flow. For this study we assumed that the SI-to-HCCI transition is implemented by means of increasing the internal exhaust gas recirculation (EGR) at constant engine speed. This transition scenario is consistent with that implemented in previously reported experimental measurements on an experimental engine equipped with variable valve actuation. We find that the model captures many of the important experimental trends, including stable SI combustion at low EGR (-0.10), a transition to highly unstable combustion at intermediate EGR, and finally stable HCCI combustion at very high EGR (-0.75). Remaining differences between the predicted and experimental instability patterns indicate that there is further room for model improvement.

  1. DETAILED CHEMICAL KINETIC MODELING OF ISO-OCTANE SI-HCCI TRANSITION

    SciTech Connect (OSTI)

    Havstad, M A; Aceves, S M; McNenly, M J; Piggott, W T; Edwards, K D; Wagner, R M; Daw, C S; Finney, C A

    2009-10-12

    The authors describe a CHEMKIN-based multi-zone model that simulates the expected combustion variations in a single-cylinder engine fueled with iso-octane as the engine transitions from spark-ignited (ST) combustion to homogeneous charge compression ignition (HCCI) combustion. The model includes a 63-species reaction mechanism and mass and energy balances for the cylinder and the exhaust flow. For this study they assumed that the SI-to-HCCI transition is implemented by means of increasing the internal exhaust gas recirculation (EGR) at constant engine speed. This transition scneario is consistent with that implemented in previously reported experimental measurements on an experimental engine equipped with variable valve actuation. They find that the model captures many of the important experimental trends, including stable SI combustion at low EGR ({approx} 0.10), a transition to highly unstable combustion at intermediate EGR, and finally stable HCCI combustion at very high EGR ({approx} 0.75). Remaining differences between the predicted and experimental instability patterns indicate that there is further room for model improvement.

  2. Poly(ethyleneoxide) functionalization through alkylation (Patent) | SciTech

    Office of Scientific and Technical Information (OSTI)

    Connect Poly(ethyleneoxide) functionalization through alkylation Citation Details In-Document Search Title: Poly(ethyleneoxide) functionalization through alkylation A new and efficient method of functionalizing high molecular weight polymers through alkylation using a metal amide base is described. This novel procedure can also be used to synthesize polymer-based macro-initiators containing radical initiating groups at the chain-ends for synthesis of block copolymers. Authors: Sivanandan,

  3. Electrophilic Metal Alkyl Chemistry in New Ligand Environments (Technical

    Office of Scientific and Technical Information (OSTI)

    Report) | SciTech Connect Technical Report: Electrophilic Metal Alkyl Chemistry in New Ligand Environments Citation Details In-Document Search Title: Electrophilic Metal Alkyl Chemistry in New Ligand Environments The goals of this project were to design new electrophilic metal alkyl complexes and to exploit these systems in fundamental studies of olefin polymerization and other important and new catalytic reactions. A key target reaction is insertion copolymerization of olefins and polar

  4. Energy Department Announces First Regional Gasoline Reserve to Strengthen

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

    Fuel Resiliency | Department of Energy First Regional Gasoline Reserve to Strengthen Fuel Resiliency Energy Department Announces First Regional Gasoline Reserve to Strengthen Fuel Resiliency May 2, 2014 - 10:29am Addthis News Media Contact 202-586-4940 WASHINGTON - As part of the Obama Administration's response to Superstorm Sandy, Energy Secretary Ernest Moniz today announced the creation of the first federal regional refined petroleum product reserve containing gasoline. Based on the

  5. Vehicle Technologies Office Merit Review 2015: Low-Temperature Gasoline

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

    Combustion (LTGC) Engine Research | Department of Energy Low-Temperature Gasoline Combustion (LTGC) Engine Research Vehicle Technologies Office Merit Review 2015: Low-Temperature Gasoline Combustion (LTGC) Engine Research Presentation given by Sandia National Laboratories at 2015 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about low-temperature gasoline combustion engine research. PDF icon ace004_dec_2015_o.pdf More

  6. Short-Term Energy Outlook April 1999-Summer Gasoline Outlook

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    markets may be summarized as follows: * Pump Prices: (average regular) projected to ... sold by refiners to resellers. d Average pump price for regular gasoline. d Refinery ...

  7. Table 34. Reformulated Motor Gasoline Prices by Grade, Sales...

    U.S. Energy Information Administration (EIA) Indexed Site

    Information AdministrationPetroleum Marketing Annual 1999 Table 34. Reformulated Motor Gasoline Prices by Grade, Sales Type, PAD District, and Selected States (Cents per...

  8. Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type...

    U.S. Energy Information Administration (EIA) Indexed Site

    Energy Information Administration Petroleum Marketing Annual 1995 Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type, PAD District, and State (Cents per Gallon...

  9. Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales...

    U.S. Energy Information Administration (EIA) Indexed Site

    250 Energy Information AdministrationPetroleum Marketing Annual 1999 Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales Type, PAD District, and State (Thousand Gallons...

  10. Table 32. Conventional Motor Gasoline Prices by Grade, Sales...

    U.S. Energy Information Administration (EIA) Indexed Site

    Information Administration Petroleum Marketing Annual 1995 Table 32. Conventional Motor Gasoline Prices by Grade, Sales Type, PAD District, and State (Cents per Gallon...

  11. Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales...

    U.S. Energy Information Administration (EIA) Indexed Site

    Energy Information Administration Petroleum Marketing Annual 1995 Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales Type, PAD District, and State (Thousand Gallons...

  12. Table 48. Prime Supplier Sales Volumes of Motor Gasoline by...

    U.S. Energy Information Administration (EIA) Indexed Site

    Petroleum Marketing Annual 1998 Table 48. Prime Supplier Sales Volumes of Motor Gasoline by Grade, Formulation, PAD District, and State (Thousand Gallons per Day) -...

  13. Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type...

    U.S. Energy Information Administration (EIA) Indexed Site

    134 Energy Information AdministrationPetroleum Marketing Annual 1998 Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type, PAD District, and State (Cents per Gallon...

  14. Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type...

    U.S. Energy Information Administration (EIA) Indexed Site

    134 Energy Information AdministrationPetroleum Marketing Annual 1999 Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type, PAD District, and State (Cents per Gallon...

  15. Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type...

    U.S. Energy Information Administration (EIA) Indexed Site

    220 Energy Information AdministrationPetroleum Marketing Annual 1998 Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State (Thousand Gallons per...

  16. Table 33. Oxygenated Motor Gasoline Prices by Grade, Sales Type...

    U.S. Energy Information Administration (EIA) Indexed Site

    - - - - - - - - - - - - See footnotes at end of table. 33. Oxygenated Motor Gasoline Prices by Grade, Sales Type, PAD District, and State 116 Energy Information...

  17. Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales...

    U.S. Energy Information Administration (EIA) Indexed Site

    - - - - W W - - - - - - See footnotes at end of table. 44. Refiner Motor Gasoline Volumes by Formulation, Sales Type, PAD District, and State 292 Energy...

  18. Table 48. Prime Supplier Sales Volumes of Motor Gasoline by...

    U.S. Energy Information Administration (EIA) Indexed Site

    Petroleum Marketing Annual 1999 Table 48. Prime Supplier Sales Volumes of Motor Gasoline by Grade, Formulation, PAD District, and State (Thousand Gallons per Day) -...

  19. Table 34. Reformulated Motor Gasoline Prices by Grade, Sales...

    U.S. Energy Information Administration (EIA) Indexed Site

    Information AdministrationPetroleum Marketing Annual 1998 Table 34. Reformulated Motor Gasoline Prices by Grade, Sales Type, PAD District, and Selected States (Cents per...

  20. Table 32. Conventional Motor Gasoline Prices by Grade, Sales...

    U.S. Energy Information Administration (EIA) Indexed Site

    - - - - W W - - - - - - See footnotes at end of table. 32. Conventional Motor Gasoline Prices by Grade, Sales Type, PAD District, and State 86 Energy Information...

  1. Table 48. Prime Supplier Sales Volumes of Motor Gasoline by...

    U.S. Energy Information Administration (EIA) Indexed Site

    Petroleum Marketing Annual 1995 Table 48. Prime Supplier Sales Volumes of Motor Gasoline by Grade, Formulation, PAD District, and State (Thousand Gallons per Day) -...

  2. Table 32. Conventional Motor Gasoline Prices by Grade, Sales...

    U.S. Energy Information Administration (EIA) Indexed Site

    - - - - 64.7 64.7 - - - - - - See footnotes at end of table. 32. Conventional Motor Gasoline Prices by Grade, Sales Type, PAD District, and State 86 Energy Information...

  3. Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales...

    U.S. Energy Information Administration (EIA) Indexed Site

    250 Energy Information AdministrationPetroleum Marketing Annual 1998 Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales Type, PAD District, and State (Thousand Gallons...

  4. Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type...

    U.S. Energy Information Administration (EIA) Indexed Site

    220 Energy Information AdministrationPetroleum Marketing Annual 1999 Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State (Thousand Gallons per...

  5. Table 34. Reformulated Motor Gasoline Prices by Grade, Sales...

    U.S. Energy Information Administration (EIA) Indexed Site

    Information Administration Petroleum Marketing Annual 1995 Table 34. Reformulated Motor Gasoline Prices by Grade, Sales Type, PAD District, and State (Cents per Gallon...

  6. Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type...

    U.S. Energy Information Administration (EIA) Indexed Site

    Energy Information Administration Petroleum Marketing Annual 1995 Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State (Thousand Gallons per...

  7. Table 32. Conventional Motor Gasoline Prices by Grade, Sales...

    U.S. Energy Information Administration (EIA) Indexed Site

    Information AdministrationPetroleum Marketing Annual 1998 Table 32. Conventional Motor Gasoline Prices by Grade, Sales Type, PAD District, and State (Cents per Gallon...

  8. Table 33. Oxygenated Motor Gasoline Prices by Grade, Sales Type...

    U.S. Energy Information Administration (EIA) Indexed Site

    Information Administration Petroleum Marketing Annual 1995 Table 33. Oxygenated Motor Gasoline Prices by Grade, Sales Type, PAD District, and State (Cents per Gallon...

  9. Reformulated Gasoline Use Under the 8-Hour Ozone Rule

    Reports and Publications (EIA)

    2002-01-01

    This paper focuses on the impact on gasoline price and supply when additional ozone non-attainment areas come under the new 8-hour ozone standard.

  10. Diesel and Gasoline Engine Emissions: Characterization of Atmosphere...

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

    Diesel and Gasoline Engine Emissions: Characterization of Atmosphere Composition and Health Responses to Inhaled Emissions 2005 Diesel Engine Emissions Reduction (DEER) Conference ...

  11. Lean Gasoline System Development for Fuel Efficient Small Car...

    Broader source: Energy.gov (indexed) [DOE]

    Vehicle Technologies Program Annual Merit Review and Peer Evaluation PDF icon ace063smith2011o.pdf More Documents & Publications Lean Gasoline System Development for Fuel ...

  12. Geographic Area Month Aviation Gasoline Kerosene-Type Jet Fuel

    U.S. Energy Information Administration (EIA) Indexed Site

    District and State (Cents per Gallon Excluding Taxes) - Continued Geographic Area Month Aviation Gasoline Kerosene-Type Jet Fuel Kerosene Sales to End Users Sales for Resale...

  13. FedEx Express Gasoline Hybrid Electric Delivery Truck Evaluation...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ... comprises chassis dynamometer testing of two medium-duty FedEx Express delivery vehicles, a gasoline hybrid electric vehicle (GHEV) and a conventional diesel (baseline) vehicle. ...

  14. Petroleum Products Table 43. Refiner Motor Gasoline Volumes...

    U.S. Energy Information Administration (EIA) Indexed Site

    of table. 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State 262 Energy Information Administration Petroleum Marketing Annual 1997 Table 43....

  15. Petroleum Products Table 43. Refiner Motor Gasoline Volumes...

    U.S. Energy Information Administration (EIA) Indexed Site

    1995 Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State (Thousand Gallons per Day) - Continued Geographic Area Month Premium All Grades Sales...

  16. Petroleum Products Table 43. Refiner Motor Gasoline Volumes...

    U.S. Energy Information Administration (EIA) Indexed Site

    2000 Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State (Thousand Gallons per Day) - Continued Geographic Area Month Premium All Grades Sales...

  17. Petroleum Products Table 31. Motor Gasoline Prices by Grade...

    U.S. Energy Information Administration (EIA) Indexed Site

    Annual 1995 Table 31. Motor Gasoline Prices by Grade, Sales Type, PAD District, and State (Cents per Gallon Excluding Taxes) - Continued Geographic Area Month Premium All...

  18. Petroleum Products Table 31. Motor Gasoline Prices by Grade...

    U.S. Energy Information Administration (EIA) Indexed Site

    Annual 2000 Table 31. Motor Gasoline Prices by Grade, Sales Type, PAD District, and State (Cents per Gallon Excluding Taxes) - Continued Geographic Area Month Premium All...

  19. Petroleum Products Table 43. Refiner Motor Gasoline Volumes...

    U.S. Energy Information Administration (EIA) Indexed Site

    of table. 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State 262 Energy Information Administration Petroleum Marketing Annual 1996 Table 43....

  20. Petroleum Products Table 31. Motor Gasoline Prices by Grade...

    U.S. Energy Information Administration (EIA) Indexed Site

    at end of table. 31. Motor Gasoline Prices by Grade, Sales Type, PAD District, and State 56 Energy Information Administration Petroleum Marketing Annual 1996 Table 31. Motor...

  1. Lean Gasoline System Development for Fuel Efficient Small Car...

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

    Technologies Program Annual Merit Review and Peer Evaluation Meeting PDF icon ace063smith2012o.pdf More Documents & Publications Lean Gasoline System Development for Fuel ...

  2. Reductant Chemistry during LNT Regeneration for a Lean Gasoline...

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

    Reductant Chemistry during LNT Regeneration for a Lean Gasoline Engine Poster presented at the 16th Directions in Engine-Efficiency and Emissions Research (DEER) Conference in ...

  3. Advantages of Oxygenates Fuels over Gasoline in Direct Injection...

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

    Advantages of Oxygenates Fuels over Gasoline in Direct Injection Spark Ignition Engines Poster presented at the 16th Directions in Engine-Efficiency and Emissions Research (DEER) ...

  4. Lean Gasoline System Development for Fuel Efficient Small Car...

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

    Technologies Program Annual Merit Review and Peer Evaluation Meeting PDF icon ace063smith2013o.pdf More Documents & Publications Lean Gasoline System Development for Fuel ...

  5. ,"U.S. Reformulated, Average Refiner Gasoline Prices"

    U.S. Energy Information Administration (EIA) Indexed Site

    ...www.eia.govdnavpetpetprirefmg2cnusepm0rdpgalm.htm" ,"Source:","Energy Information ... Reformulated Gasoline Retail Sales by Refiners (Dollars per ...

  6. ,"U.S. Conventional, Average Refiner Gasoline Prices"

    U.S. Energy Information Administration (EIA) Indexed Site

    ...www.eia.govdnavpetpetprirefmg2cnusepm0udpgalm.htm" ,"Source:","Energy Information ... Conventional Gasoline Retail Sales by Refiners (Dollars per ...

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

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

    and Semi-Volatile Organic Compound Materials In Vitro Genotoxicity of Gasoline and Diesel Engine Vehicle Exhaust Particulate and Semi-Volatile Organic Compound Materials 2002 ...

  8. Motor Gasoline Market Spring 2007 and Implications for Spring...

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    began to decline, and with the transition from methyl tertiary butyl ether (MTBE) to ethanol completed and the end of the summer driving season drawing near, gasoline prices...

  9. Fact #824: June 9, 2014 EPA Sulfur Standards for Gasoline | Department...

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

    4: June 9, 2014 EPA Sulfur Standards for Gasoline Fact 824: June 9, 2014 EPA Sulfur Standards for Gasoline Sulfur naturally occurs in gasoline and diesel fuel, contributing to ...

  10. Gasoline price shows small increase (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    long version) The U.S. average retail price for regular gasoline showed little movement from last week. Prices rose 4/10 of a cent to $3.30 a gallon on Monday, based on the weekly price survey by the U.S. Energy Information Administration. Pump prices were highest in the New England States, at 3.52 a gallon, down 1/10 of a penny from a week ago. Prices were lowest at 2.87 a gallon in the Rocky Mountain States, with the biggest regional price drop at close to 7 cents.

  11. Gasoline price up this week (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    up this week (long version) The U.S. average retail price for regular gasoline rose to $3.32 a gallon on Monday. That's up 1.2 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. For the first time since early December pump prices were highest in the West Coast at 3.50 a gallon, up 1.2 cents from a week ago. For the fourth week in a row, prices were lowest in the Rocky Mountain States at 2.88 a gallon, up 1.3 cents.

  12. Gasoline price up this week (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    long version) The U.S. average retail price for regular gasoline rose to $3.36 a gallon on Monday. That's up 4.2 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. For the second week in a row, pump prices were highest in the West Coast at 3.55 a gallon, up 4.2 cents from a week ago. Prices were lowest in the Rocky Mountain States at 2.98 a gallon, up 10.1 cents marking the greatest regional increase this week.

  13. Gasoline prices continue to decrease (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    (long version) The U.S. average retail price for regular gasoline fell to $3.65 a gallon on Monday. That's down 3 1/2 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. Pump prices were highest in the West Coast region at 3.95 a gallon, down 1.7 cents from a week ago. Prices were lowest in the Gulf Coast States at 3.48 a gallon, down 2.5 cents. This is Amerine Woodyard, with EIA, in Washington.

  14. Gasoline prices continue to decrease (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    long version) The U.S. average retail price for regular gasoline fell to $3.50 a gallon on Monday. That's down 8.1 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. Pump prices were highest in the West Coast region at 3.89 a gallon, down 5.6 cents from a week ago. Prices were lowest in the Gulf Coast States at 3.31 a gallon, down 6 1/2 cents.

  15. Gasoline prices continue to fall (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    (long version) The U.S. average retail price for regular gasoline fell to $3.54 a gallon on Monday. That's down 6.6 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. Pump prices were highest in the West Coast region at 3.89 a gallon, down 4 cents from a week ago. Prices were lowest in the Gulf Coast States at 3.36 a gallon, down 7.1 cents.

  16. Gasoline prices continue to fall (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    long version) The U.S. average retail price for regular gasoline fell to $3.52 a gallon on Monday. That's down 1.6 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. Pump prices were highest in the West Coast region at 3.80 a gallon, down 3.6 cents from a week ago. Prices were lowest in the Gulf Coast States at 3.30 a gallon, down 2.9 cents.

  17. The photodissociation dynamics of alkyl radicals

    SciTech Connect (OSTI)

    Giegerich, Jens; Fischer, Ingo

    2015-01-28

    The photodisscociation dynamics of the alkyl radicals i-propyl (CH(CH{sub 3}){sub 2}) and t-butyl (C(CH{sub 3}){sub 3}) are investigated by H-atom photofragment imaging. While i-propyl is excited at 250 nm, the photodynamics of t-butyl are explored over a large energy range using excitation wavelengths between 347 nm and 233 nm. The results are compared to those obtained previously for ethyl, CH{sub 3}CH{sub 2}, and to those reported for t-butyl using 248 nm excitation. The translational energy (E{sub T}) distribution of the H-atom photofragments is bimodal and appears rather similar for all three radicals. The low E{sub T} part of the distribution shows an isotropic photofragment angular distribution, while the high E{sub T} part is associated with a considerable anisotropy. Thus, for t-butyl, two H-atom loss channels of roughly equal importance have been identified in addition to the CH{sub 3}-loss channel reported previously. A mechanism for the photodissociation of alkyl radicals is suggested that is based on interactions between Rydberg- and valence states.

  18. Woody Biomass Converted to Gasoline by Five-Company Team | Department of

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

    Energy Woody Biomass Converted to Gasoline by Five-Company Team Woody Biomass Converted to Gasoline by Five-Company Team October 22, 2015 - 10:50am Addthis A tanker picks up gasoline from the biorefinery. | Photo courtesy The Gas Technology Institute A tanker picks up gasoline from the biorefinery. | Photo courtesy The Gas Technology Institute A tanker picks up gasoline from the biorefinery. | Photo courtesy The Gas Technology Institute A tanker picks up gasoline from the biorefinery. |

  19. DOE's Gasoline/Diesel PM Split Study | Department of Energy

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

    4 Diesel Engine Emissions Reduction (DEER) Conference Presentation: National Renewable Energy Laboratory PDF icon 2004_deer_lawson.pdf More Documents & Publications DOE's Gasoline/Diesel PM Split Study DOE's Gasoline/Diesel PM Split Study Collaborative Lubricating Oil Study on Emissions (CLOSE) Project

  20. Gasoline Ultra Fuel Efficient Vehicle | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    2 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting PDF icon ace064_confer_2012_o.pdf More Documents & Publications Gasoline Ultra Fuel Efficient Vehicle Program Update Gasoline Ultra Fuel Efficient Vehicle

  1. Demand, Supply, and Price Outlook for Reformulated Motor Gasoline 1995

    Reports and Publications (EIA)

    1994-01-01

    Provisions of the Clean Air Act Amendments of 1990 designed to reduce ground-level ozone will increase the demand for reformulated motor gasoline in a number of U.S. metropolitan areas. This article discusses the effects of the new regulations on the motor gasoline market and the refining industry.

  2. U.S. gasoline prices continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    gasoline prices continue to decrease (short version) The U.S. average retail price for regular gasoline fell to $2.82 a gallon on Monday. That's down 7.3 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  3. U.S. gasoline prices continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    gasoline prices continue to decrease (short version) The U.S. average retail price for regular gasoline fell to $2.78 a gallon on Monday. That's down 4.3 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration

  4. U.S. gasoline prices continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    gasoline prices continue to decrease (short version) The U.S. average retail price for regular gasoline fell to $3.45 a gallon on Monday. That's down 1.8 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration

  5. U.S. gasoline prices continued to decreased (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    U.S. gasoline prices continued to decreased (short version) The U.S. average retail price for regular gasoline fell to $3.24 a gallon on Monday. That's down 3 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration

  6. U.S. gasoline prices decrease (Short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    6, 2015 U.S. gasoline prices decrease (Short version) The U.S. average retail price for regular gasoline fell to $2.41 a gallon on Monday. That's down 3 ½ cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. This is Amerine Woodyard, with EIA, in Washington.

  7. U.S. gasoline prices decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    6, 2014 U.S. gasoline prices decrease (short version) The U.S. average retail price for regular gasoline fell to $3.30 a gallon on Monday. That's down a nickel and a half from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. This is Amerine Woodyard

  8. U.S. gasoline prices decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    gasoline prices decrease (short version) The U.S. average retail price for regular gasoline fell to $3.64 a gallon on Monday. That's down 4.3 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  9. U.S. gasoline prices unchanged (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    gasoline prices decrease (short version) The U.S. average retail price for regular gasoline fell to $3.68 a gallon on Monday. That's down 2.6 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. This is Amerine Woodyard, with EIA, in Washington

  10. 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

  11. Lean Gasoline Engine Reductant Chemistry During Lean NOx Trap Regeneration

    SciTech Connect (OSTI)

    Choi, Jae-Soon; Prikhodko, Vitaly Y; Partridge Jr, William P; Parks, II, James E; Norman, Kevin M; Huff, Shean P; Chambon, Paul H; Thomas, John F

    2010-01-01

    Lean NOx Trap (LNT) catalysts can effectively reduce NOx from lean engine exhaust. Significant research for LNTs in diesel engine applications has been performed and has led to commercialization of the technology. For lean gasoline engine applications, advanced direct injection engines have led to a renewed interest in the potential for lean gasoline vehicles and, thereby, a renewed demand for lean NOx control. To understand the gasoline-based reductant chemistry during regeneration, a BMW lean gasoline vehicle has been studied on a chassis dynamometer. Exhaust samples were collected and analyzed for key reductant species such as H2, CO, NH3, and hydrocarbons during transient drive cycles. The relation of the reductant species to LNT performance will be discussed. Furthermore, the challenges of NOx storage in the lean gasoline application are reviewed.

  12. Assessment of Summer 1997 motor gasoline price increase

    SciTech Connect (OSTI)

    1998-05-01

    Gasoline markets in 1996 and 1997 provided several spectacular examples of petroleum market dynamics. The first occurred in spring 1996, when tight markets, following a long winter of high demand, resulted in rising crude oil prices just when gasoline prices exhibit their normal spring rise ahead of the summer driving season. Rising crude oil prices again pushed gasoline prices up at the end of 1996, but a warm winter and growing supplies weakened world crude oil markets, pushing down crude oil and gasoline prices during spring 1997. The 1996 and 1997 spring markets provided good examples of how crude oil prices can move gasoline prices both up and down, regardless of the state of the gasoline market in the United States. Both of these spring events were covered in prior Energy Information Administration (EIA) reports. As the summer of 1997 was coming to a close, consumers experienced yet another surge in gasoline prices. Unlike the previous increase in spring 1996, crude oil was not a factor. The late summer 1997 price increase was brought about by the supply/demand fundamentals in the gasoline markets, rather than the crude oil markets. The nature of the summer 1997 gasoline price increase raised questions regarding production and imports. Given very strong demand in July and August, the seemingly limited supply response required examination. In addition, the price increase that occurred on the West Coast during late summer exhibited behavior different than the increase east of the Rocky Mountains. Thus, the Petroleum Administration for Defense District (PADD) 5 region needed additional analysis (Appendix A). This report is a study of this late summer gasoline market and some of the important issues surrounding that event.

  13. GASOLINE VEHICLE EXHAUST PARTICLE SAMPLING STUDY

    SciTech Connect (OSTI)

    Kittelson, D; Watts, W; Johnson, J; Zarling, D Schauer,J Kasper, K; Baltensperger, U; Burtscher, H

    2003-08-24

    The University of Minnesota collaborated with the Paul Scherrer Institute, the University of Wisconsin (UWI) and Ricardo, Inc to physically and chemically characterize the exhaust plume from recruited gasoline spark ignition (SI) vehicles. The project objectives were: (1) Measure representative particle size distributions from a set of on-road SI vehicles and compare these data to similar data collected on a small subset of light-duty gasoline vehicles tested on a chassis dynamometer with a dilution tunnel using the Unified Drive Cycle, at both room temperature (cold start) and 0 C (cold-cold start). (2) Compare data collected from SI vehicles to similar data collected from Diesel engines during the Coordinating Research Council E-43 project. (3) Characterize on-road aerosol during mixed midweek traffic and Sunday midday periods and determine fleet-specific emission rates. (4) Characterize bulk- and size-segregated chemical composition of the particulate matter (PM) emitted in the exhaust from the gasoline vehicles. Particle number concentrations and size distributions are strongly influenced by dilution and sampling conditions. Laboratory methods were evaluated to dilute SI exhaust in a way that would produce size distributions that were similar to those measured during laboratory experiments. Size fractionated samples were collected for chemical analysis using a nano-microorifice uniform deposit impactor (nano-MOUDI). In addition, bulk samples were collected and analyzed. A mixture of low, mid and high mileage vehicles were recruited for testing during the study. Under steady highway cruise conditions a significant particle signature above background was not measured, but during hard accelerations number size distributions for the test fleet were similar to modern heavy-duty Diesel vehicles. Number emissions were much higher at high speed and during cold-cold starts. Fuel specific number emissions range from 1012 to 3 x 1016 particles/kg fuel. A simple relationship between number and mass emissions was not observed. Data were collected on-road to compare weekday with weekend air quality around the Twin Cities area. This portion of the study resulted in the development of a method to apportion the Diesel and SI contribution to on-road aerosol.

  14. Hige Compression Ratio Turbo Gasoline Engine Operation Using Alcohol Enhancement

    SciTech Connect (OSTI)

    Heywood, John; Jo, Young Suk; Lewis, Raymond; Bromberg, Leslie; Heywood, John

    2015-10-31

    The overall objective of this project was to quantify the potential for improving the performance and efficiency of gasoline engine technology by use of alcohols to suppress knock. Knock-free operation is obtained by direct injection of a second “anti-knock” fuel such as ethanol, which suppresses knock when, with gasoline fuel, knock would occur. Suppressing knock enables increased turbocharging, engine downsizing, and use of higher compression ratios throughout the engine’s operating map. This project combined engine testing and simulation to define knock onset conditions, with different mixtures of gasoline and alcohol, and with this information quantify the potential for improving the efficiency of turbocharged gasoline spark-ignition engines, and the on-vehicle fuel consumption reductions that could then be realized. The more focused objectives of this project were therefore to: Determine engine efficiency with aggressive turbocharging and downsizing and high compression ratio (up to a compression ratio of 13.5:1) over the engine’s operating range; Determine the knock limits of a turbocharged and downsized engine as a function of engine speed and load; Determine the amount of the knock-suppressing alcohol fuel consumed, through the use of various alcohol-gasoline and alcohol-water gasoline blends, for different driving cycles, relative to the gasoline consumed; Determine implications of using alcohol-boosted engines, with their higher efficiency operation, in both light-duty and medium-duty vehicle sectors.

  15. Microsoft Word - Summer 2006 Motor Gasoline Prices.doc

    Gasoline and Diesel Fuel Update (EIA)

    1 STEO Supplement: Summer 2006 Motor Gasoline Prices This supplement to the July 2006 Short-Term Energy Outlook (STEO) examines the various factors that have contributed to this summer's high gasoline prices and discusses how they may continue to impact markets over the next several months. EIA's forecast of the retail price of regular gasoline for the summer 2006 driving season (April 1 through September 30) has been revised steadily upwards from $2.62 per gallon in the April STEO to $2.88 per

  16. U.S. gasoline prices unchanged (short version)

    Gasoline and Diesel Fuel Update (EIA)

    (short version) The U.S. average retail price for regular gasoline fell for the 5 th week in a row to 3.52 a gallon on Monday. That's down 2.4 cents from a week ago and...

  17. U.S. gasoline prices continue to increase (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    continue to increase (short version) The U.S. average retail price for regular gasoline rose to 2.74 a gallon on Monday. That's up 5.3 cents from a week ago, based on the weekly...

  18. U.S. gasoline prices increase slightly (short version)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    short version) The U.S. average retail price for regular gasoline rose slightly to 3.55 a gallon on Monday. That's up 2-tenths of a penny from a week ago, based on the weekly...

  19. U.S. gasoline prices continue to increase (short version)

    Gasoline and Diesel Fuel Update (EIA)

    continue to increase (short version) The U.S. average retail price for regular gasoline rose to 2.49 a gallon on Monday. That's up 1.4 cents from a week ago, based on the weekly...

  20. U.S. gasoline prices increase slightly (short version)

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    short version) The U.S. average retail price for regular gasoline rose slightly to 3.36 a gallon on Monday. That's up 6-tenths of a penny from a week ago, based on the weekly...

  1. U.S. gasoline prices continue to increase (short version)

    Gasoline and Diesel Fuel Update (EIA)

    short version) The U.S. average retail price for regular gasoline rose to 3.68 a gallon on Monday. That's up 4 12 cents from a week ago, based on the weekly price survey by the...

  2. U.S. gasoline prices continue to increase (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline rose to 3.61 a gallon on Labor Day Monday. That's up 5.6 cents from a week ago, based on the weekly price survey...

  3. U.S. gasoline prices continue to increase (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    continue to increase (short version) The U.S. average retail price for regular gasoline rose to 2.77 a gallon on Memorial Day Monday. That's up 3 cents from a week ago, based on...

  4. U.S. gasoline prices continue to increase (short version)

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    continue to increase (short version) The U.S. average retail price for regular gasoline rose to 2.69 a gallon on Monday. That's up 2.7 cents from a week ago, based on the weekly...

  5. U.S. gasoline prices continue to increase (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    increase (short version) The U.S. average retail price for regular gasoline rose to 2.66 a gallon on Monday. That's up 9.4 cents from a week ago, based on the weekly price survey...

  6. U.S. gasoline prices increase (short version)

    Gasoline and Diesel Fuel Update (EIA)

    short version) The U.S. average retail price for regular gasoline rose to 2.03 a gallon on Monday. That's up 8- tenths of a penny from a week ago, based on the weekly price survey...

  7. U.S. gasoline prices continue to increase (short version)

    Gasoline and Diesel Fuel Update (EIA)

    short version) The U.S. average retail price for regular gasoline rose to 3.29 a gallon on Monday. That's up 7.4 cents from a week ago, based on the weekly price survey by the...

  8. U.S. gasoline continue to increase (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    continue to increase (short version) The U.S. average retail price for regular gasoline rose to 3.33 a gallon on Monday. That's up 6 cents from a week ago, based on the weekly...

  9. U.S. gasoline prices continue to increase (short version)

    Gasoline and Diesel Fuel Update (EIA)

    continue to increase (short version) The U.S. average retail price for regular gasoline rose to 2.78 a gallon on Monday. That's up 6- tenths of a penny from a week ago, based on...

  10. U.S. gasoline continue to increase (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    continue to increase (short version) The U.S. average retail price for regular gasoline rose to 3.33 a gallon on Monday. That's up 1- tenth of a penny from a week ago, based on...

  11. U.S. Gasoline prices continue increase (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    continue to increase (short version) The U.S. average retail price for regular gasoline rose to 3.69 a gallon on Monday. That's up 1.6 cents from a week ago, based on the weekly...

  12. U.S. gasoline prices continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    gasoline fell 5.4 cents from a week ago to 3.54 a gallon on Monday. This marks the first time since early March that prices have dipped below 3.55, based on the weekly price...

  13. U.S. gasoline prices unchanged (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    gasoline fell 4.2 cents from a week ago to 3.59 a gallon on Monday. This marks the first time since early April that prices have dipped below 3.60, based on the weekly price...

  14. Table 48. Prime Supplier Sales Volumes of Motor Gasoline by...

    U.S. Energy Information Administration (EIA) Indexed Site

    - - 466.1 466.1 See footnotes at end of table. 48. Prime Supplier Sales Volumes of Motor Gasoline by Grade, Formulation, PAD District, and State 356 Energy Information...

  15. Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type...

    U.S. Energy Information Administration (EIA) Indexed Site

    253.2 2,222.4 W W 206.4 134.3 - 340.7 See footnotes at end of table. 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State 262 Energy Information...

  16. Table 48. Prime Supplier Sales Volumes of Motor Gasoline by...

    U.S. Energy Information Administration (EIA) Indexed Site

    - - 532.1 532.1 See footnotes at end of table. 48. Prime Supplier Sales Volumes of Motor Gasoline by Grade, Formulation, PAD District, and State 356 Energy Information...

  17. Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type...

    U.S. Energy Information Administration (EIA) Indexed Site

    150.0 2,026.7 W W 234.5 161.7 - 396.3 See footnotes at end of table. 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State 262 Energy Information...

  18. U.S. gasoline prices decrease (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    April 6, 2015 U.S. gasoline prices decrease (long version) The U.S. average retail price ... Pump prices were highest in the West Coast states at 2.95 a gallon, down 4.6 cents from a ...

  19. U.S. gasoline prices continue to decrease (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    , 2014 U.S. gasoline prices continue to decrease (long version) The U.S. average retail ... Pump prices were highest in the West Coast states at 3.02 a gallon, down 3.2 cents from a ...

  20. U.S. gasoline prices show little movement (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    30, 2014 U.S. gasoline prices show little movement (long version) The U.S. average retail ... Pump prices were highest in the West Coast states at 4.04 a gallon, up 2 cents from a ...

  1. U.S. gasoline prices continue to increase (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    9, 2015 U.S. gasoline prices continue to increase (long version) The U.S. average retail ... Pump prices were highest in the West Coast states at 3.18 a gallon, up 5.2 cents from a ...

  2. U.S. gasoline prices continue to increase (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    26, 2015 U.S. gasoline prices continue to increase (long version) The U.S. average retail ... Pump prices were highest in the West Coast states at 3.49 a gallon, down 2.6 cents from a ...

  3. U.S. gasoline prices continue to increase (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    June 1, 2015 U.S. gasoline prices continue to increase (long version) The U.S. average ... Pump prices were highest in the West Coast states at 3.44 a gallon, down 4.3 cents from a ...

  4. U.S. gasoline prices show little movement (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    1, 2014 U.S. gasoline prices decrease for third week in a row (long version) The U.S. ... This marks the first time since early April that prices have dipped below 3.60, based on ...

  5. U.S. gasoline prices decrease (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    0, 2015 U.S. gasoline prices decrease (long version) The U.S. average retail price for ... Pump prices were highest in the West Coast states at 3 a gallon, down 4.7 cents from a ...

  6. U.S. gasoline prices continue to decrease (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    1, 2014 U.S. gasoline prices continue to decrease (long version) The U.S. average retail ... Pump prices were highest in the West Coast states at 3.87 a gallon, down 2.1 cents from a ...

  7. U.S. gasoline prices show little movement (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    August 4, 2014 U.S. gasoline prices decrease for fifth week in a row (long version) The ... Pump prices were highest in the West Coast states at 3.89 a gallon, down 3.1 cents from a ...

  8. U.S. gasoline prices continue to increase (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    8, 2015 U.S. gasoline prices continue to increase (long version) The U.S. average retail ... Pump prices were highest in the West Coast states at 3.51 a gallon, up 6.9 cents from a ...

  9. U.S. gasoline prices decrease (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    4, 2014 U.S. gasoline prices decrease (long version) The U.S. average retail price for ... Pump prices were highest in the West Coast states at 4 a gallon, down 3.6 cents from a ...

  10. U.S. gasoline prices continued to decreased (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    6, 2013 U.S. gasoline prices continued to decreased (long version) The U.S. average retail ... Pump prices were highest in the New England region at 3.51 a gallon, up 1.4 cents from a ...

  11. U.S. gasoline prices decrease (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    6, 2014 U.S. gasoline prices decrease (long version) The U.S. average retail price for ... Pump prices were highest in the West Coast states at 3.61 a gallon, down 3 cents from a ...

  12. U.S. gasoline prices show little movement (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    7, 2014 U.S. gasoline prices decrease (long version) The U.S. average retail price for ... Pump prices were highest in the West Coast states at 4.04 a gallon, up a tenth of a penny ...

  13. U.S. gasoline prices decrease (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    September 8, 2014 U.S. gasoline prices decrease (long version) The U.S. average retail ... Pump prices were highest in the West Coast states at 3.77 a gallon, down 2.3 cents from a ...

  14. U.S. Gasoline prices continue to decrease (Long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    , 2014 U.S. Gasoline prices continue to increase (long version) The U.S. average retail ... Pump prices were highest in the West Coast states at 4.01 a gallon, up 3-tenths of a penny ...

  15. U.S. gasoline prices decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    price for regular gasoline fell to 2.18 a gallon on Monday. That's down 5.7 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  16. U.S. gasoline price continues to increase (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    price for regular gasoline rose to 2.47 a gallon on Monday. That's up 14.1 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  17. U.S. gasoline price continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    price for regular gasoline fell to 2.69 a gallon on Monday. That's down 5.6 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration

  18. U.S. gasoline prices decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    price for regular gasoline fell to 2.07 a gallon on Monday. That's down 1.4 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  19. U.S. gasoline price increases (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    price for regular gasoline rose to 2.83 a gallon on Monday. That's up 4.1 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration

  20. U.S. gasoline price decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    for regular gasoline dropped to 2.80 a gallon on Monday. That's down 3.2 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration

  1. U.S. summer gasoline prices dive this year

    U.S. Energy Information Administration (EIA) Indexed Site

    In its new monthly forecast, the U.S. Energy Information Administration said the price for regular-grade gasoline will average 2.04 per gallon this summer. That's down about 60 ...

  2. U.S. gasoline price decreases (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    price for regular gasoline fell to 2.64 a gallon on Monday. That's down 7.9 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  3. U.S. gasoline price continues to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    regular gasoline fell to 2.79 a gallon on Monday. That's down 8-tenths of a penny from a week ago, based on the weekly price survey by the U.S. Energy Information Administration

  4. U.S. gasoline prices decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    price for regular gasoline fell to 2.28 a gallon on Monday. That's down 6 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  5. U.S. gasoline price continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    price for regular gasoline fell to 2.63 a gallon on Monday. That's down 6 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  6. U.S. gasoline price increases (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    price for regular gasoline rose to 2.24 a gallon on Monday. That's up 2.2 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  7. U.S. gasoline price continues to increase (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    price for regular gasoline rose to 2.19 a gallon on Monday. That's up 12.3 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  8. U.S. gasoline prices remain steady (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    average retail price for regular gasoline remained unchanged this week at 2.78 a gallon on Monday, based on the weekly price survey by the U.S. Energy Information Administration

  9. U.S. gasoline price increases this week (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    regular gasoline rose to 2.46 a gallon on Monday. That's up 4 tenths of a penny from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  10. U.S. gasoline price continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    price for regular gasoline rose to 2.72 a gallon on Monday. That's up 8.7 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  11. Summer gasoline price forecast slightly higher, but drivers still...

    U.S. Energy Information Administration (EIA) Indexed Site

    In its new monthly forecast, the U.S. Energy Information Administration said the retail price for regular grade gasoline will average 2.21 per gallon this summer. While that's 17 ...

  12. U.S. gasoline price continues to decrease (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    regular gasoline fell to 2.32 a gallon on Monday. That's down 4-tenths of a penny from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. ...

  13. U.S. gasoline price continues to increase (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    price for regular gasoline rose to 2.33 a gallon on Monday. That's up 5.8 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  14. U.S. Gasoline Price Continues to Increase (Short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    price for regular gasoline rose to 2.27 a gallon on Monday. That's up 8.3 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  15. U.S. gasoline prices increase (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    price for regular gasoline rose to 2.14 a gallon on Monday. That's up 6.8 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  16. U.S. average gasoline price up slightly

    U.S. Energy Information Administration (EIA) Indexed Site

    gasoline rose slightly to 3.65 a gallon on Monday. That's up a tenth of a penny from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. ...

  17. Gasoline Compression Ignition - Start of Injection Timing Sweep...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Contact Us For more information, contact Greg Cunningham at (630) 252-8232 or media@anl.gov. Gasoline Compression Ignition - Start of Injection Timing Sweep (VERIFI) Share Topic...

  18. Fact #639: September 6, 2010 Gasoline Tax Rates by State

    Broader source: Energy.gov [DOE]

    The Federal Excise Tax on motor gasoline is 18.4 cents per gallon for all states. Each state applies additional taxes which vary from state to state. As of July 2010, Alaska had the lowest overall...

  19. Fact #915: March 7, 2016 Average Historical Annual Gasoline Pump...

    Broader source: Energy.gov (indexed) [DOE]

    Average Historical Annual Gasoline Pump Price, 1929-2015 File fotw915web.xlsx More Documents & Publications Fact 888: August 31, 2015 Historical Gas Prices - Dataset Fact 835: ...

  20. Process for conversion of lignin to reformulated hydrocarbon gasoline

    DOE Patents [OSTI]

    Shabtai, Joseph S. (Salt Lake City, UT); Zmierczak, Wlodzimierz W. (Salt Lake City, UT); Chornet, Esteban (Golden, CO)

    1999-09-28

    A process for converting lignin into high-quality reformulated hydrocarbon gasoline compositions in high yields is disclosed. The process is a two-stage, catalytic reaction process that produces a reformulated hydrocarbon gasoline product with a controlled amount of aromatics. In the first stage, a lignin material is subjected to a base-catalyzed depolymerization reaction in the presence of a supercritical alcohol as a reaction medium, to thereby produce a depolymerized lignin product. In the second stage, the depolymerized lignin product is subjected to a sequential two-step hydroprocessing reaction to produce a reformulated hydrocarbon gasoline product. In the first hydroprocessing step, the depolymerized lignin is contacted with a hydrodeoxygenation catalyst to produce a hydrodeoxygenated intermediate product. In the second hydroprocessing step, the hydrodeoxygenated intermediate product is contacted with a hydrocracking/ring hydrogenation catalyst to produce the reformulated hydrocarbon gasoline product which includes various desirable naphthenic and paraffinic compounds.

  1. U.S. gasoline prices continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    long version) The U.S. average retail price for regular gasoline fell to its lowest level since April 2009 to 2.04 a gallon on Monday. That's down 1.6 cents from a week ago, based ...

  2. U.S. gasoline prices decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    decrease (short version) The U.S. average retail price for regular gasoline fell to its lowest level of the year at 3.21 a gallon on Monday. That's down 9.2 cents from a week ...

  3. U.S. gasoline prices continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline fell to its lowest level since April 2009 to 2.04 a gallon on Monday. That's down 1.6 cents from a week ago, ...

  4. U.S. gasoline consumption highest in 8 years

    U.S. Energy Information Administration (EIA) Indexed Site

    In its new monthly forecast, the U.S. Energy Information Administration said gasoline consumption increased by 2.7% during the first eight months of 2015 and should rise by an ...

  5. U.S. Aviation Gasoline Refiner Sales Volumes

    U.S. Energy Information Administration (EIA) Indexed Site

    Product: Aviation Gasoline Kerosene-Type Jet Fuel Propane (Consumer Grade) Kerosene No. 1 ... Product Sales Type Area Sep-15 Oct-15 Nov-15 Dec-15 Jan-16 Feb-16 View History Sales to ...

  6. Gasoline prices fall for first time this year (short version...

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline fell for the first time this year to 3.76 a gallon on Monday. That's down 2 12 cents from a week ago, based on ...

  7. Gasoline prices increase for first time since February (short...

    U.S. Energy Information Administration (EIA) Indexed Site

    (short version) The U.S. average retail price for regular gasoline rose for the first time since February to 3.54 a gallon on Monday. That's up 1.8 cents from a week ago, based ...

  8. Gasoline prices decrease nationally for first time in 4 weeks...

    U.S. Energy Information Administration (EIA) Indexed Site

    (short version) The U.S. average retail price for regular gasoline fell for the first time in three weeks to 3.67 a gallon on Monday. That's down 1.6 cents from a week ago, ...

  9. Gasoline prices increase for first time since February (long...

    U.S. Energy Information Administration (EIA) Indexed Site

    (long version) The U.S. average retail price for regular gasoline rose for the first time since February to 3.54 a gallon on Monday. That's up 1.8 cents from a week ago, based on ...

  10. Gasoline prices fall for first time this year (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    long version) The U.S. average retail price for regular gasoline fell for the first time this year to 3.76 a gallon on Monday. That's down 2 12 cents from a week ago, based on ...

  11. Forecasting the oil-gasoline price relationship: should we care...

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    (2007, EE) obtain similar results on a panel of 15 OECD countries, with annual data ... Results Point forecasts of the N.Y. gasoline price 26 Panel (a): daily data Model MSFE ...

  12. Fact #869: April 20, 2015 Gasoline Direct Injection Captures...

    Broader source: Energy.gov (indexed) [DOE]

    Gasoline Direct Injection Captures 38% Market Share in Just Seven Years from First Significant Use File fotw869web.xlsx More Documents & Publications Fact 905: December 28, 2015 ...

  13. U.S. gasoline prices decrease (short version)

    Gasoline and Diesel Fuel Update (EIA)

    price for regular gasoline fell to 3.46 a gallon on Monday. That's down 2-tenths of a penny from a week ago, based on the weekly price survey by the U.S. Energy Information...

  14. U.S. gasoline prices continue to decrease (short version)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    retail price for regular gasoline fell to 3.51 a gallon on Monday. That's down a penny from a week ago and down 13 cents from a month ago, based on the weekly price survey...

  15. U.S. gasoline prices continues to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    retail price for regular gasoline fell to 2.32 a gallon on Monday. That's down half a penny from a week ago, based on the weekly price survey by the U.S. Energy Information...

  16. U.S. gasoline prices decrease (Short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    price for regular gasoline fell to 2.45 a gallon on Monday. That's down 9-tenths of a penny from a week ago, based on the weekly price survey by the U.S. Energy Information...

  17. 3-Cylinder Turbocharged Gasoline Direct Injection: A High Value...

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

    ...% CO2 reduction) at a significantly lower on-cost. PDF icon deer09kirwan.pdf More Documents & Publications Gasoline Ultra Fuel Efficient Vehicle Reducing the Particulate Emission ...

  18. Gasoline and the Environment - Energy Explained, Your Guide To

    U.S. Energy Information Administration (EIA) Indexed Site

    Understanding Energy - Energy Information Administration Gasoline > Gasoline & the Environment Energy Explained - Home What Is Energy? Forms of Energy Sources of Energy Laws of Energy Units and Calculators Energy Conversion Calculators British Thermal Units (Btu) Degree-Days U.S. Energy Facts State and U.S. Territory Data Use of Energy In Industry For Transportation In Homes In Commercial Buildings Efficiency and Conservation Energy and the Environment Greenhouse Gases Effect on the

  19. Improving Ethanol-Gasoline Blends by Addition of Higher Alcohols |

    Broader source: Energy.gov (indexed) [DOE]

    Department of Energy Mixtures of ethanol, gasoline, and higher alcohols were evaluated to determine if they offer superior performance to ethanol/gasoline blends in meeting the Renewal Fuels Standard II. PDF icon deer12_ickes.pdf More Documents & Publications Vehicle Certification Test Fuel and Ethanol Flex Fuel Quality Impact of ethanol and butanol as oxygenates on SIDI engine efficiency and emissions using steady-state and transient test procedures Drop In Fuels: Where the Road Leads

  20. Reductant Chemistry during LNT Regeneration for a Lean Gasoline Engine |

    Broader source: Energy.gov (indexed) [DOE]

    Department of Energy Poster presented at the 16th Directions in Engine-Efficiency and Emissions Research (DEER) Conference in Detroit, MI, September 27-30, 2010. PDF icon p-09_parks.pdf More Documents & Publications Development of Optimal Catalyst Designs and Operating Strategies for Lean NOx Reduction in Coupled LNT-SCR Systems Emissions Control for Lean Gasoline Engines Emissions Control for Lean Gasoline Engines

  1. Restructuring: The Changing Face of Motor Gasoline Marketing

    Reports and Publications (EIA)

    2001-01-01

    This report reviews the U.S. motor gasoline marketing industry during the period 1990 to 1999, focusing on changes that occurred during the period. The report incorporates financial and operating data from the Energy Information Administration's Financial Reporting System (FRS), motor gasoline outlet counts collected by the National Petroleum News from the states, and U.S. Census Bureau salary and employment data published in County Business Patterns.

  2. Final Technical Report [Development of Catalytic Alkylation and Fluoroalkylation Methods

    SciTech Connect (OSTI)

    Vicic, David A.

    2014-05-01

    In the early stages of this DOE-funded research project, we sought to prepare and study a well-defined nickel-alkyl complex containing tridentate nitrogen donor ligands. We found that reaction of (TMEDA)NiMe2 (1) with terpyridine ligand cleanly led to the formation of (terpyridyl)NiMe (2), which we also determined to be an active alkylation catalyst. The thermal stability of 2 was unlike that seen for any of the active pybox ligands, and enabled a number of key studies on alkyl transfer reactions to be performed, providing new insights into the mechanism of nickel-mediated alkyl-alkyl cross-coupling reactions. In addition to the mechanistic studies, we showed that the terpyridyl nickel compounds can catalytically cross-couple alkyl iodides in yields up to 98% and bromides in yields up to 46 %. The yields for the bromides can be increased up to 67 % when the new palladium catalyst [(tpy’)Pd-Ph]I is used. The best route to the targeted [(tpy)NiBr] (1) was found to involve the comproportionation reaction of [(dme)NiBr{sub 2}] and [Ni(COD){sub 2}] in the presence of two equivalents of terpyridine. This reaction was driven to high yields of product formation (72 % isolated) by the precipitation of 1 from THF solvent.

  3. The motor gasoline industry: Past, present, and future. [Contains glossary

    SciTech Connect (OSTI)

    Not Available

    1991-01-01

    Motor gasoline constitutes the largest single component of US demand for petroleum products and is the Nation's most widely used transportation fuel. Because of its importance as a transportation fuel, motor gasoline has been the focus of several regulatory and tax policy initiatives in recent years. Much of the US refining capacity is specifically geared toward maximizing motor gasoline production, and future investments by the petroleum industry in refining infrastructure are likely to be made largely to produce larger volumes of clean motor gasoline. This report addresses major events and developments that have had an impact on motor gasoline supply, distribution, prices, and demand. The report provides historical perspective as well as analyses of important events from the 1970's and 1980's. Long-term forecasts are provided for the period from 1990 to 2010 in an effort to present and analyze possible future motor gasoline trends. Other forecasts examine the near-term impact of the invasion of Kuwait. 18 figs., 10 tabs.

  4. This Week In Petroleum Summary Printer-Friendly Version

    Gasoline and Diesel Fuel Update (EIA)

    the octane of the gasoline blendstock shipped from refineries has declined. The U.S. Environmental Protection Agency estimated that refiners are currently producing 84 octane...

  5. Electric and Gasoline Vehicle Fuel Efficiency Analysis

    Energy Science and Technology Software Center (OSTI)

    1995-05-24

    EAGLES1.1 is PC-based interactive software for analyzing performance (e.g., maximum range) of electric vehicles (EVs) or fuel economy (e.g., miles/gallon) of gasoline vehicles (GVs). The EV model provides a second by second simulation of battery voltage and current for any specified vehicle velocity/time or power/time profile. It takes into account the effects of battery depth-of-discharge (DOD) and regenerative braking. The GV fuel economy model which relates fuel economy, vehicle parameters, and driving cycle characteristics, canmore » be used to investigate the effects of changes in vehicle parameters and driving patterns on fuel economy. For both types of vehicles, effects of heating/cooling loads on vehicle performance can be studied. Alternatively, the software can be used to determine the size of battery needed to satisfy given vehicle mission requirements (e.g., maximum range and driving patterns). Options are available to estimate the time necessary for a vehicle to reach a certain speed with the application of a specified constant power and to compute the fraction of time and/or distance in a drivng cycle for speeds exceeding a given value.« less

  6. Preparation and reactivity of macrocyclic rhodium(III) alkyl complexes

    SciTech Connect (OSTI)

    Carraher, Jack M.; Ellern, Arkady; Bakac, Andreja

    2013-09-21

    Macrocyclic rhodium(II) complexes LRh(H2O)(2+) (L = L-1 = cyclam and L-2 = meso-Me-6-cyclam) react with alkyl hydroperoxides RC(CH3)(2)OOH to generate the corresponding rhodium(III) alkyls L(H2O)RhR2+ (R = CH3, C2H5, PhCH2). Methyl and benzyl complexes can also be prepared by bimolecular group transfer from alkyl cobaloximes (dmgH)(2)(H2O) CoR and (dmgBF(2))(2)(H2O) CoR (R = CH3, PhCH2) to LRh(H2O)(2+). The new complexes were characterized by solution NMR and by crystal structure analysis. They exhibit great stability in aqueous solution at room temperature, but undergo efficient Rh-C bond cleavage upon photolysis. (C) 2013 Elsevier B.V. All rights reserved.

  7. Gasoline and Diesel Fuel Update - Energy Information Administration

    U.S. Energy Information Administration (EIA) Indexed Site

    all petroleum reports Gasoline and Diesel Fuel Update Gasoline Release Date: May 23, 2016 | Next Release Date: May 31, 2016 Diesel Fuel Release Date: May 23, 2016 | Next Release Date: May 31, 2016 U.S. Regular Gasoline Prices* (dollars per gallon)full history Change from 05/09/16 05/16/16 05/23/16 week ago year ago U.S. 2.220 2.242 2.300 values are up 0.058 values are down -0.474 East Coast (PADD1) 2.217 2.216 2.248 values are up 0.032 values are down -0.418 New England (PADD1A) 2.270 2.263

  8. Electrical impedance tomography of the 1995 OGI gasoline release

    SciTech Connect (OSTI)

    Daily, W.; Ramirez, A.

    1996-10-01

    Electrical impedance tomography (EIT) was used to image the plume resulting from a release of 378 liters (100 gallons) of gasoline into a sandy acquifer. Images were made in 5 planes before and 5 times during the release, to generate a detailed picture of the spatial as well as the temporal development of the plume as it spread at the water table. Information of the electrical impedance (both in phase and out of phase voltages) was used or several different frequencies to produce images. We observed little dispersion in the images either before or after the gasoline entered the acquifer. Likewise, despite some laboratory measurements of impedances, there was no evidence of a change in the reactance in the soil because of the gasoline.

  9. Alkyl phospholipid antihypertensive agents in method of lowering blood pressure

    DOE Patents [OSTI]

    Snyder, Fred L.; Blank, Merle L.; Muirhead, Ernest E.; Leach, deceased, Byron E.; Byers, Lawrence W.

    1988-01-01

    The composition of this invention is 1-O-alkyl-2-acetoyl-sn-glycero-3-phosphocholine, having the ionic structural formula; ##STR1## wherein R is saturated alkyl having 9-21 carbon atoms, or salts or hydrates of the composition. Preferably R has 13-19 carbon atoms and most preferably R has 15 carbon atoms. The composition of this invention is useful for reducing hypertension in warm-blooded animals, including humans, when administered either orally or by injection or innoculation, e.g., intravenous injection. The composition can be prepared from naturally occurring lipids or synthetically from commercially available material.

  10. Modeling and Analysis of Natural Gas and Gasoline In A High Compressio...

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

    and Gasoline In A High Compression Ratio High Efficiency ICRE Modeling and Analysis of Natural Gas and Gasoline In A High Compression Ratio High Efficiency ICRE performance of a ...

  11. U.S. gasoline price decreases for 17th week in a row (short version...

    U.S. Energy Information Administration (EIA) Indexed Site

    gasoline price decreases for 17th week in a row (short version) The U.S. average retail price for regular gasoline fell for the 17th week in a row to 2.04 a gallon on Monday....

  12. U.S. gasoline prices continues to decrease; 2 states with sub...

    U.S. Energy Information Administration (EIA) Indexed Site

    5, 2015 U.S. gasoline prices continues to decrease; 2 states with sub 2 prices (long version) The U.S. average retail price for regular gasoline fell to 2.21 a gallon on Monday. ...

  13. Lower crude oil prices to help push down gasoline pricesLower...

    U.S. Energy Information Administration (EIA) Indexed Site

    Lower crude oil prices to help push down gasoline prices Falling crude oil prices should lead to lower U.S. retail gasoline prices this year compared to last year. The U.S. Energy ...

  14. U.S. gasoline prices expected to be cheaper in the second half...

    U.S. Energy Information Administration (EIA) Indexed Site

    gasoline prices expected to be cheaper in the second half of 2013 U.S. retail gasoline prices should be slightly lower during the second half of 2013. In its new monthly energy ...

  15. U.S. gasoline prices continues to decrease at lowest level since...

    U.S. Energy Information Administration (EIA) Indexed Site

    5, 2015 U.S. gasoline prices continues to decrease at lowest level since May 2009; 2 states with sub 2 prices (short version) The U.S. average retail price for regular gasoline ...

  16. U.S. average gasoline and diesel fuel prices expected to be slightly...

    U.S. Energy Information Administration (EIA) Indexed Site

    average gasoline and diesel fuel prices expected to be slightly lower in 2013 than in 2012 ... Diesel fuel will continue to cost more than gasoline because of strong global demand for ...

  17. Motor Gasoline Consumption 2008 - Historical Perspective and Short-Term Projections

    Reports and Publications (EIA)

    2008-01-01

    This report reviews how gasoline markets relate to population, income, prices, and the growing role of ethanol. It also analyzes the structural shift in motor gasoline markets that took place in the late 1990s.

  18. U.S. gasoline price expected to drop further below $3 per gallon

    U.S. Energy Information Administration (EIA) Indexed Site

    Declining fuel prices to push U.S. gasoline demand to an 8-year high In its new forecast, the U.S. Energy Information Administration said domestic gasoline consumption this year ...

  19. Fact #675: May 16, 2011 Gasoline Prices by Region, May 2, 2011

    Office of Energy Efficiency and Renewable Energy (EERE)

    The West Coast region paid the highest prices for gasoline averaging $4.14 for a gallon of regular gasoline while the Rocky Mountain region paid the least at $3.70 per gallon. The southern states,...

  20. U.S. gasoline prices increase for first time in four weeks

    U.S. Energy Information Administration (EIA) Indexed Site

    gasoline price at lowest level since November 2010 (short version) The U.S. average retail price for regular gasoline fell to 2.94 a gallon on Monday. That's down 5.2 cents from a ...

  1. U.S. gasoline price decrease for first time in seven weeks (short...

    U.S. Energy Information Administration (EIA) Indexed Site

    gasoline prices remain flat (short version) The U.S. average retail price for regular gasoline fell to 2.41 a gallon on Monday. That's down half a penny from a week ago, based on ...

  2. U.S. gasoline increase for the first time in four weeks (long...

    U.S. Energy Information Administration (EIA) Indexed Site

    gasoline increase for the first time in four weeks (long version) The U.S. average retail price for regular gasoline rose for the first time in 4 weeks to 3.27 a gallon on Monday. ...

  3. U.S. gasoline prices increase for first time in a month (long...

    U.S. Energy Information Administration (EIA) Indexed Site

    gasoline prices increase for first time in a month (long version) The U.S. average retail price for regular gasoline rose for the first time in a month to 2.49 a gallon on Monday. ...

  4. U.S. gasoline price decrease for first time in seven weeks ...

    U.S. Energy Information Administration (EIA) Indexed Site

    6, 2015 U.S. gasoline price decrease for first time in seven weeks (long version) The U.S. average retail price for regular gasoline fell to 2.45 a gallon on Monday. That's down ...

  5. U.S. gasoline price decrease for first time in seven weeks (short...

    U.S. Energy Information Administration (EIA) Indexed Site

    gasoline price decrease for first time in seven weeks (short version) The U.S. average retail price for regular gasoline fell to 2.45 a gallon on Monday. That's down 3.4 cents ...

  6. Gasoline prices increase for first time in 5 weeks (short version...

    U.S. Energy Information Administration (EIA) Indexed Site

    Gasoline prices increase for first time in 5 weeks (short version) The U.S. average retail price for regular gasoline rose for the first time in 5 weeks to 3.31 a gallon on Monday. ...

  7. U.S. gasoline price decrease for first time in seven weeks ...

    U.S. Energy Information Administration (EIA) Indexed Site

    3, 2015 U.S. gasoline prices remain flat (long version) The U.S. average retail price for regular gasoline fell to 2.41 a gallon on Monday. That's down half a penny from a week ...

  8. U.S. gasoline price decrease for first time in seven weeks (short...

    U.S. Energy Information Administration (EIA) Indexed Site

    gasoline prices continue to increase (short version) The U.S. average retail price for regular gasoline rose to 2.57 a gallon on Monday. That's up 8 cents from a week ago, ...

  9. Gasoline prices increase for first time in 5 weeks (long version...

    U.S. Energy Information Administration (EIA) Indexed Site

    Gasoline prices increase for first time in 5 weeks (long version) The U.S. average retail price for regular gasoline rose for the first time in 5 weeks to 3.31 a gallon on Monday. ...

  10. U.S. gasoline prices increase for first time since June (long...

    U.S. Energy Information Administration (EIA) Indexed Site

    September 2, 2014 U.S. gasoline prices increase for first time since June (long version) The U.S. average retail price for regular gasoline rose for the first time since late June ...

  11. U.S. gasoline prices increase for first time in a month (short...

    U.S. Energy Information Administration (EIA) Indexed Site

    gasoline prices increase for first time in a month (short version) The U.S. average retail price for regular gasoline rose for the first time in a month to 2.49 a gallon on Monday. ...

  12. U.S. gasoline increase for the first time in four weeks (short...

    U.S. Energy Information Administration (EIA) Indexed Site

    U.S. gasoline increase for the first time in four weeks (short version) The U.S. average retail price for regular gasoline rose for the first time in 4 weeks to 3.27 a gallon on ...

  13. U.S. gasoline price decrease for first time in seven weeks ...

    U.S. Energy Information Administration (EIA) Indexed Site

    7, 2015 U.S. gasoline prices continue to increase (long version) The U.S. average retail price for regular gasoline rose to 2.57 a gallon on Monday. That's up 8 cents from a ...

  14. Fact #890: September 14, 2015 Gasoline Prices Are Affected by Changes in

    Energy Savers [EERE]

    Refinery Output - Dataset | Department of Energy 0: September 14, 2015 Gasoline Prices Are Affected by Changes in Refinery Output - Dataset Fact #890: September 14, 2015 Gasoline Prices Are Affected by Changes in Refinery Output - Dataset Excel file and dataset for Gasoline Prices Are Affected by Changes in Refinery Output File fotw#890_web.xlsx More Documents & Publications Fact #858 February 2, 2015 Retail Gasoline Prices in 2014 Experienced the Largest Decline since 2008 - Dataset LCC

  15. Load Expansion with Diesel/Gasoline RCCI for Improved Engine Efficiency and Emissions

    Broader source: Energy.gov [DOE]

    This poster will describe preliminary emission results of gasoline/diesel RCCI in a medium-duty diesel engine.

  16. A Detailed Chemical Kinetic Reaction Mechanism for n-Alkane Hydrocarbons From n-Octane to n-Hexadecane

    SciTech Connect (OSTI)

    Westbrook, C K; Pitz, W J; Herbinet, O; Curran, H J; Silke, E J

    2008-02-08

    Detailed chemical kinetic reaction mechanisms have been developed to describe the pyrolysis and oxidation of nine n-alkanes larger than n-heptane, including n-octane (n-C{sub 8}H{sub 18}), n-nonane (n-C{sub 9}H{sub 20}), n-decane (n-C{sub 10}H{sub 22}), n-undecane (n-C{sub 11}H{sub 24}), n-dodecane (n-C{sub 12}H{sub 26}), n-tridecane (n-C{sub 13}H{sub 28}), n-tetradecane (n-C{sub 14}H{sub 30}), n-pentadecane (n-C{sub 15}H{sub 32}), and n-hexadecane (n-C{sub 16}H{sub 34}). These mechanisms include both high temperature and low temperature reaction pathways. The mechanisms are based on our previous mechanisms for the primary reference fuels n-heptane and iso-octane, using the reaction class mechanism construction first developed for n-heptane. Individual reaction class rules are as simple as possible in order to focus on the parallelism between all of the n-alkane fuels included in the mechanisms, and these mechanisms will be refined further in the future to incorporate greater levels of accuracy and predictive capability. These mechanisms are validated through extensive comparisons between computed and experimental data from a wide variety of different sources. In addition, numerical experiments are carried out to examine features of n-alkane combustion in which the detailed mechanisms can be used to compare reactivities of different n-alkane fuels. The mechanisms for all of these n-alkanes are presented as a single detailed mechanism, which can be edited to produce efficient mechanisms for any of the n-alkanes included, and the entire mechanism, with supporting thermochemical and transport data, together with an explanatory glossary explaining notations and structural details, will be available for download from our web page.

  17. The Impact of Ethanol Blending on U.S. Gasoline Prices

    SciTech Connect (OSTI)

    none,

    2008-11-01

    This study assesses the impact of ethanol blending on gasoline prices in the United States today and the potential impact of ethanol on gasoline prices at higher blending concentrations (10%, 15% and 20% of the total U.S. gasoline consumption).

  18. Ionic liquid containing hydroxamate and N-alkyl sulfamate ions

    DOE Patents [OSTI]

    Friesen, Cody A.; Wolfe, Derek; Johnson, Paul Bryan

    2016-03-15

    Embodiments of the invention are related to ionic liquids and more specifically to ionic liquids used in electrochemical metal-air cells in which the ionic liquid includes a cation and an anion selected from hydroxamate and/or N-alkyl sulfamate anions.

  19. Evaluation of processes for producing gasoline from wood. Final report

    SciTech Connect (OSTI)

    1980-05-01

    Three processes for producing gasoline from wood by pyrolysis have been investigated. Technical and economic comparisons among the processes have been made, based on a hypothetical common plant size of 2000 tons per day green wood chip feedstock. In order to consider the entire fuel production process, the energy and cost inputs for producing and delivering the feedstock were included in the analysis. In addition, perspective has been provided by comparisons of the wood-to-gasoline technologies with other similar systems, including coal-to-methanol and various biomass-to-alcohol systems. Based on several assumptions that were required because of the candidate processes' information gaps, comparisons of energy efficiency were made. Several descriptors of energy efficiency were used, but all showed that methanol production from wood, with or without subsequent processing by the Mobil route to gasoline, appears most promising. It must be emphasized, however, that the critical wood-to-methanol system remains conceptual. Another observation was that the ethanol production systems appear inferior to the wood-to-gasoline processes. Each of the processes investigated requires further research and development to answer the questions about their potential contributions confidently. The processes each have so many unknowns that it appears unwise to pursue any one while abandoning the others.

  20. Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type...

    U.S. Energy Information Administration (EIA) Indexed Site

    71.8 W 70.5 78.9 W 76.0 83.6 W 69.2 75.2 See footnotes at end of table. 35. Refiner Motor Gasoline Prices by Grade, Sales Type, PAD District and State 176 Energy Information...

  1. Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type...

    U.S. Energy Information Administration (EIA) Indexed Site

    W 68.4 70.8 W W 78.6 W 85.7 81.8 W 69.3 73.8 See footnotes at end of table. 35. Refiner Motor Gasoline Prices by Grade, Sales Type, PAD District and State 176 Energy Information...

  2. Table 34. Reformulated Motor Gasoline Prices by Grade, Sales...

    U.S. Energy Information Administration (EIA) Indexed Site

    61.5 70.8 92.7 90.7 81.5 72.8 - 78.0 See footnotes at end of table. 34. Reformulated Motor Gasoline Prices by Grade, Sales Type, PAD District, and State 146 Energy Information...

  3. Table 34. Reformulated Motor Gasoline Prices by Grade, Sales...

    U.S. Energy Information Administration (EIA) Indexed Site

    62.6 71.7 92.3 89.9 82.6 72.7 - 78.2 See footnotes at end of table. 34. Reformulated Motor Gasoline Prices by Grade, Sales Type, PAD District, and State 146 Energy Information...

  4. U.S. gasoline price continues to increase (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline rose to $2.30 a gallon on Monday. That's up 5.8 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  5. U.S. gasoline prices continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline fell to $2.03 a gallon on Monday. That's down 6-tenths of a penny from a week ago, based on the weekly price survey by the U.S. Energy Information Administration

  6. U.S. gasoline prices continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline fell to $2.00 a gallon on Monday. That's down 3.2 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  7. U.S. gasoline prices continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline fell to $1.91 a gallon on Monday. That's down 8.2 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration

  8. U.S. gasoline prices continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline fell to $1.86 a gallon on Monday. That's down 5.8 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  9. U.S. gasoline prices continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline fell to $1.82 a gallon on Monday. That's down 3.4 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration

  10. U.S. gasoline prices continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline fell to $1.76 a gallon on Monday. That's down 6.3 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration

  11. U.S. gasoline prices continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline fell to $1.72 a gallon on Monday. That's down 3 ½ cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  12. U.S. gasoline prices continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline rose to $1.73 a gallon on Monday. That's up 6- tenths of a penny from a week ago, based on the weekly price survey by the U.S. Energy Information Administration

  13. U.S. gasoline prices continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline rose to $1.78 a gallon on Monday. That's up 5.3 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  14. U.S. gasoline prices continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline rose to $1.84 a gallon on Monday. That's up 5.8 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  15. U.S. gasoline prices continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline rose to $1.96 a gallon on Monday. That's up 12 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  16. U.S. gasoline prices continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline fell to $2.44 a gallon on Monday. That's down 7.3 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  17. U.S. gasoline prices continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline fell to $2.38 a gallon on Monday. That's down 6.2 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  18. U.S. gasoline prices continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline fell to $2.23 a gallon on Monday. That's down 4.9 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration

  19. U.S. gasoline prices continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline fell to $2.22 a gallon on Monday. That's down 4-tenths of a penny from a week ago, based on the weekly price survey by the U.S. Energy Information Administration

  20. U.S. gasoline prices continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline fell to $2.09 a gallon on Monday. That's down 8.4 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration

  1. U.S. gasoline prices continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline fell to $2.06 a gallon on Monday. That's down 3 ½ cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  2. U.S. gasoline prices continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline fell to $2.05 a gallon on Monday. That's down 6-tenths of a penny from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  3. U.S. gasoline prices continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline fell to $2.03 a gallon on Monday. That's down 1.1 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration

  4. U.S. gasoline prices continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline fell to $3.35 a gallon on Monday. That's down 1.3 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  5. U.S. gasoline prices continue to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline fell to $3.27 a gallon on Monday. That's down 2.9 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  6. U.S. gasoline prices continue to increase (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline rose to $2.01 a gallon on Monday. That's up 4.6 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  7. U.S. gasoline prices continue to increase (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline rose to $2.07 a gallon on Monday. That's up 5.9 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  8. U.S. gasoline prices continue to increase (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline rose to $2.08 a gallon on Monday. That's up 1.7 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  9. U.S. gasoline prices continue to increase (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline rose to $2.16 a gallon on Monday. That's up 2 ½ cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  10. U.S. gasoline prices continue to increase (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline rose to $2.24 a gallon on Monday. That's up 7.8 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  11. U.S. gasoline prices continue to increase (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline fell to $3.63 a gallon on Monday. That's down 1.4 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  12. U.S. gasoline prices continue to increase (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline fell to $3.56 a gallon on Monday. That's down 7.1 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  13. U.S. gasoline prices continue to increase (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline fell to $3.55 a gallon on Monday. That's down 1.1 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  14. U.S. gasoline prices continues to decrease (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline fell to $2.33 a gallon on Monday. That's down 4.8 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  15. Comparing Scales of Environmental Effects from Gasoline and Ethanol Production

    SciTech Connect (OSTI)

    Parish, Esther S; Kline, Keith L; Dale, Virginia H; Efroymson, Rebecca Ann; McBride, Allen; Johnson, Timothy L; Hilliard, Michael R; Bielicki, Dr Jeffrey M

    2013-01-01

    Understanding the environmental effects of alternative fuel production is critical to characterizing the sustainability of energy resources to inform policy and regulatory decisions. The magnitudes of these environmental effects vary according to the intensity and scale of fuel production along each step of the supply chain. We compare the scales (i.e., spatial extent and temporal duration) of ethanol and gasoline production processes and environmental effects based on a literature review, and then synthesize the scale differences on space-time diagrams. Comprehensive assessment of any fuel-production system is a moving target, and our analysis shows that decisions regarding the selection of spatial and temporal boundaries of analysis have tremendous influences on the comparisons. Effects that strongly differentiate gasoline and ethanol supply chains in terms of scale are associated with when and where energy resources are formed and how they are extracted. Although both gasoline and ethanol production may result in negative environmental effects, this study indicates that ethanol production traced through a supply chain may impact less area and result in more easily reversed effects of a shorter duration than gasoline production.

  16. Application of Synergistic Technologies to Achieve High Levels of Gasoline

    Broader source: Energy.gov (indexed) [DOE]

    Engine Downsizing | Department of Energy Discussed technologies applied in highly downsized efficient gasoline engine concept such as multiple injection, advanced boosting, cooled exhaust gas recirculation, and electrical supercharger PDF icon deer11_boggs.pdf More Documents & Publications Meeting the CO2 Challenge DEER 2002 DEER 2007 Presentation Bosch Powertrain Technologies

  17. Gasoline prices continue to decrease nationally (short version)

    U.S. Energy Information Administration (EIA) Indexed Site

    short version) The U.S. average retail price for regular gasoline fell to $3.58 a gallon on Monday. That's down 4.9 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration.

  18. Emissions Control for Lean Gasoline Engines | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    1 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation PDF icon ace033_toops_2011_o.pdf More Documents & Publications Pre-Competitive Catalysis Research: Fundamental Sulfation/Desulfation Studies of Lean NOx Traps CLEERS Coordination & Development of Catalyst Process Kinetic Data Emissions Control for Lean Gasoline Engines

  19. Biomass to Gasoline and DIesel Using Integrated Hydropyrolysis and Hydroconversion

    SciTech Connect (OSTI)

    Marker, Terry; Roberts, Michael; Linck, Martin; Felix, Larry; Ortiz-Toral, Pedro; Wangerow, Jim; Tan, Eric; Gephart, John; Shonnard, David

    2013-01-02

    Cellulosic and woody biomass can be directly converted to hydrocarbon gasoline and diesel blending components through the use of integrated hydropyrolysis plus hydroconversion (IH2). The IH2 gasoline and diesel blending components are fully compatible with petroleum based gasoline and diesel, contain less than 1% oxygen and have less than 1 total acid number (TAN). The IH2 gasoline is high quality and very close to a drop in fuel. The DOE funding enabled rapid development of the IH2 technology from initial proof-of-principle experiments through continuous testing in a 50 kg/day pilot plant. As part of this project, engineering work on IH2 has also been completed to design a 1 ton/day demonstration unit and a commercial-scale 2000 ton/day IH2 unit. These studies show when using IH2 technology, biomass can be converted directly to transportation quality fuel blending components for the same capital cost required for pyrolysis alone, and a fraction of the cost of pyrolysis plus upgrading of pyrolysis oil. Technoeconomic work for IH2 and lifecycle analysis (LCA) work has also been completed as part of this DOE study and shows IH2 technology can convert biomass to gasoline and diesel blending components for less than $2.00/gallon with greater than 90% reduction in greenhouse gas emissions. As a result of the work completed in this DOE project, a joint development agreement was reached with CRI Catalyst Company to license the IH2 technology. Further larger-scale, continuous testing of IH2 will be required to fully demonstrate the technology, and funding for this is recommended. The IH2 biomass conversion technology would reduce U.S. dependence on foreign oil, reduce the price of transportation fuels, and significantly lower greenhouse gas (GHG) emissions. It is a breakthrough for the widespread conversion of biomass to transportation fuels.

  20. Gasoline price forecast to stay below 3 dollar a gallon in 2015

    U.S. Energy Information Administration (EIA) Indexed Site

    Gasoline price forecast to stay below $3 a gallon in 2015 The national average pump price of gasoline is expected to stay below $3 per gallon during 2015. In its new monthly forecast, the U.S. Energy Information Administration said the retail price for regular gasoline should average $2.33 per gallon this year. The price of gasoline increased in early February after falling for 17 weeks in a row. But gasoline prices will continue to remain low in 2015 when compared with pump prices in recent

  1. Effects of gasoline reactivity and ethanol content on boosted premixed and partially stratified low-temperature gasoline combustion (LTGC)

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

    Dec, John E.; Yang, Yi; Ji, Chunsheng; Dernotte, Jeremie

    2015-04-14

    Low-temperature gasoline combustion (LTGC), based on the compression ignition of a premixed or partially premixed dilute charge, can provide thermal efficiencies (TE) and maximum loads comparable to those of turbo-charged diesel engines, and ultra-low NOx and particulate emissions. Intake boosting is key to achieving high loads with dilute combustion, and it also enhances the fuel's autoignition reactivity, reducing the required intake heating or hot residuals. These effects have the advantages of increasing TE and charge density, allowing greater timing retard with good stability, and making the fuel Φ- sensitive so that partial fuel stratification (PFS) can be applied for highermore » loads and further TE improvements. However, at high boost the autoignition reactivity enhancement can become excessive, and substantial amounts of EGR are required to prevent overly advanced combustion. Accordingly, an experimental investigation has been conducted to determine how the tradeoff between the effects of intake boost varies with fuel-type and its impact on load range and TE. Five fuels are investigated: a conventional AKI=87 petroleum-based gasoline (E0), and blends of 10 and 20% ethanol with this gasoline to reduce its reactivity enhancement with boost (E10 and E20). Furthermore, a second zero-ethanol gasoline with AKI=93 (matching that of E20) was also investigated (CF-E0), and some neat ethanol data are also reported.« less

  2. Effects of gasoline reactivity and ethanol content on boosted premixed and partially stratified low-temperature gasoline combustion (LTGC)

    SciTech Connect (OSTI)

    Dec, John E.; Yang, Yi; Ji, Chunsheng; Dernotte, Jeremie

    2015-04-14

    Low-temperature gasoline combustion (LTGC), based on the compression ignition of a premixed or partially premixed dilute charge, can provide thermal efficiencies (TE) and maximum loads comparable to those of turbo-charged diesel engines, and ultra-low NOx and particulate emissions. Intake boosting is key to achieving high loads with dilute combustion, and it also enhances the fuel's autoignition reactivity, reducing the required intake heating or hot residuals. These effects have the advantages of increasing TE and charge density, allowing greater timing retard with good stability, and making the fuel Φ- sensitive so that partial fuel stratification (PFS) can be applied for higher loads and further TE improvements. However, at high boost the autoignition reactivity enhancement can become excessive, and substantial amounts of EGR are required to prevent overly advanced combustion. Accordingly, an experimental investigation has been conducted to determine how the tradeoff between the effects of intake boost varies with fuel-type and its impact on load range and TE. Five fuels are investigated: a conventional AKI=87 petroleum-based gasoline (E0), and blends of 10 and 20% ethanol with this gasoline to reduce its reactivity enhancement with boost (E10 and E20). Furthermore, a second zero-ethanol gasoline with AKI=93 (matching that of E20) was also investigated (CF-E0), and some neat ethanol data are also reported.

  3. Effects of gasoline reactivity and ethanol content on boosted premixed and partially stratified low-temperature gasoline combustion (LTGC)

    SciTech Connect (OSTI)

    Dec, John E.; Yang, Yi; Ji, Chunsheng; Dernotte, Jeremie

    2015-04-14

    Low-temperature gasoline combustion (LTGC), based on the compression ignition of a premixed or partially premixed dilute charge, can provide thermal efficiencies (TE) and maximum loads comparable to those of turbo-charged diesel engines, and ultra-low NOx and particulate emissions. Intake boosting is key to achieving high loads with dilute combustion, and it also enhances the fuel's autoignition reactivity, reducing the required intake heating or hot residuals. These effects have the advantages of increasing TE and charge density, allowing greater timing retard with good stability, and making the fuel ?- sensitive so that partial fuel stratification (PFS) can be applied for higher loads and further TE improvements. However, at high boost the autoignition reactivity enhancement can become excessive, and substantial amounts of EGR are required to prevent overly advanced combustion. Accordingly, an experimental investigation has been conducted to determine how the tradeoff between the effects of intake boost varies with fuel-type and its impact on load range and TE. Five fuels are investigated: a conventional AKI=87 petroleum-based gasoline (E0), and blends of 10 and 20% ethanol with this gasoline to reduce its reactivity enhancement with boost (E10 and E20). Furthermore, a second zero-ethanol gasoline with AKI=93 (matching that of E20) was also investigated (CF-E0), and some neat ethanol data are also reported.

  4. Techno-economic Analysis for the Conversion of Lignocellulosic Biomass to Gasoline via the Methanol-to-Gasoline (MTG) Process

    SciTech Connect (OSTI)

    Jones, Susanne B.; Zhu, Yunhua

    2009-05-01

    Biomass is a renewable energy resource that can be converted into liquid fuel suitable for transportation applications. As a widely available biomass form, lignocellulosic biomass can have a major impact on domestic transportation fuel supplies and thus help meet the Energy Independence and Security Act renewable energy goals (U.S. Congress 2007). With gasification technology, biomass can be converted to gasoline via methanol synthesis and methanol-to-gasoline (MTG) technologies. Producing a gasoline product that is infrastructure ready has much potential. Although the MTG technology has been commercially demonstrated with natural gas conversion, combining MTG with biomass gasification has not been shown. Therefore, a techno-economic evaluation for a biomass MTG process based on currently available technology was developed to provide information about benefits and risks of this technology. The economic assumptions used in this report are consistent with previous U.S. Department of Energy Office of Biomass Programs techno-economic assessments. The feedstock is assumed to be wood chips at 2000 metric ton/day (dry basis). Two kinds of gasification technologies were evaluated: an indirectly-heated gasifier and a directly-heated oxygen-blown gasifier. The gasoline selling prices (2008 USD) excluding taxes were estimated to be $3.20/gallon and $3.68/gallon for indirectly-heated gasified and directly-heated. This suggests that a process based on existing technology is economic only when crude prices are above $100/bbl. However, improvements in syngas cleanup combined with consolidated gasoline synthesis can potentially reduce the capital cost. In addition, improved synthesis catalysts and reactor design may allow increased yield.

  5. Fact #858 February 2, 2015 Retail Gasoline Prices in 2014 Experienced the Largest Decline since 2008 – Dataset

    Broader source: Energy.gov [DOE]

    Excel file with dataset for Retail Gasoline Prices in 2014 Experienced the Largest Decline since 2008

  6. Method for reactivating solid catalysts used in alkylation reactions

    DOE Patents [OSTI]

    Ginosar, Daniel M.; Thompson, David N.; Coates, Kyle; Zalewski, David J.; Fox, Robert V.

    2003-06-17

    A method for reactivating a solid alkylation catalyst is provided which can be performed within a reactor that contains the alkylation catalyst or outside the reactor. Effective catalyst reactivation is achieved whether the catalyst is completely deactivated or partially deactivated. A fluid reactivating agent is employed to dissolve catalyst fouling agents and also to react with such agents and carry away the reaction products. The deactivated catalyst is contacted with the fluid reactivating agent under pressure and temperature conditions such that the fluid reactivating agent is dense enough to effectively dissolve the fouling agents and any reaction products of the fouling agents and the reactivating agent. Useful pressures and temperatures for reactivation include near-critical, critical, and supercritical pressures and temperatures for the reactivating agent. The fluid reactivating agent can include, for example, a branched paraffin containing at least one tertiary carbon atom, or a compound that can be isomerized to a molecule containing at least one tertiary carbon atom.

  7. Chemical kinetic modeling of component mixtures relevant to gasoline

    SciTech Connect (OSTI)

    Mehl, M; Curran, H J; Pitz, W J; Westbrook, C K

    2009-02-13

    Real fuels are complex mixtures of thousands of hydrocarbon compounds including linear and branched paraffins, naphthenes, olefins and aromatics. It is generally agreed that their behavior can be effectively reproduced by simpler fuel surrogates containing a limited number of components. In this work, a recently revised version of the kinetic model by the authors is used to analyze the combustion behavior of several components relevant to gasoline surrogate formulation. Particular attention is devoted to linear and branched saturated hydrocarbons (PRF mixtures), olefins (1-hexene) and aromatics (toluene). Model predictions for pure components, binary mixtures and multi-component gasoline surrogates are compared with recent experimental information collected in rapid compression machine, shock tube and jet stirred reactors covering a wide range of conditions pertinent to internal combustion engines. Simulation results are discussed focusing attention on the mixing effects of the fuel components.

  8. Assessment of California reformulated gasoline impact on vehicle fuel economy

    SciTech Connect (OSTI)

    Aceves, S., LLNL

    1997-01-01

    Fuel economy data contained in the 1996 California Air Resources Board (CARB) report with respect to the introduction of California Reformulated Gasoline (CaRFG) has been examined and reanalyzed by two additional statistical methodologies. Additional data has also been analyzed by these two statistical approaches. Within the assumptions of the analysis, point estimates for the reduction in fuel economy using CaRFG as compared to conventional, non-reformulated gasoline were 2-4%, with a 95% upper confidence bound of 6%. Substantial variations in fuel economy are routine and inevitable due to additional factors which affect mileage, even if there is no change in fuel reformulation. This additional analysis confirms the conclusion reached by CARB with respect to the impact of CaRFG on fuel economy.

  9. High Thermal Efficiency and Low Emissions with Supercritical...

    Broader source: Energy.gov (indexed) [DOE]

    Gasoline Injection-Ignition in a Light Duty Engine An Experimental Investigation of Low Octane Gasoline in Diesel Engines Low Temperature Combustion Demonstrator for High ...

  10. High Efficiency Clean Combustion Engine Designs for Gasoline and Diesel

    Broader source: Energy.gov (indexed) [DOE]

    Engines | Department of Energy 2009 DOE Hydrogen Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting, May 18-22, 2009 -- Washington D.C. PDF icon ace_35_patton.pdf More Documents & Publications High Efficiency Clean Combustion Engine Designs for Gasoline and Diesel Engines Development of High-Efficiency Clean Combustion Engines Designs for SI and CI Engines Expanding Robust HCCI Operation (Delphi CRADA)

  11. Low-Temperature Gasoline Combustion (LTGC) Engine Research

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

    Low-Temperature Gasoline Combustion (LTGC) Engine Research - Previously known as HCCI / SCCI - John E. Dec Jeremie Dernotte and Chunsheng Ji Sandia National Laboratories June 17, 2014 - 12:00 p.m. U.S. DOE, Office of Vehicle Technologies Annual Merit Review and Peer Evaluation Program Managers: Gurpreet Singh & Leo Breton Project ID: ACE004 This presentation does not contain any proprietary, confidential, or otherwise restricted information. Timeline ● Project provides fundamental research

  12. Characterization of Pre-Commercial Gasoline Engine Particulates Through

    Broader source: Energy.gov (indexed) [DOE]

    Advanced Aerosol Methods | Department of Energy Advanced aerosol analysis methods were used to examine particulates from single cylinder test engines running on gasoline and ethanol blends. PDF icon deer12_zelenyuk.pdf More Documents & Publications Fuel-Neutral Studies of Particulate Matter Transport Emissions Fuel-Neutral Studies of Particulate Matter Transport Emissions Vehicle Technologies Office Merit Review 2015: Fuel-Neutral Studies of Particulate Matter Transport Emissions

  13. Maximizing Potential of Diesel and Gasoline for a Cleaner, More Efficient

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

    Engine | Department of Energy Maximizing Potential of Diesel and Gasoline for a Cleaner, More Efficient Engine Maximizing Potential of Diesel and Gasoline for a Cleaner, More Efficient Engine September 27, 2011 - 3:52pm Addthis A team of researchers and engineers at Argonne National Laboratory, led by Steve Ciatti, pictured above, is looking at the possibility of using gasoline to power diesel engines, thereby increasing overall efficiency and reducing pollution. | Image courtesy of ANL A

  14. Impact of California Phase 2 reformulated gasoline on atmospheric reactivity of exhaust and evaporative emissions

    SciTech Connect (OSTI)

    Kirchstetter, T.W.; Singer, B.C.; Harley, R.A.; Kendall, G.R.; Traverse, M.

    1997-12-31

    Phase 2 of California`s reformulated gasoline (RFG) program took effect statewide in the first half of 1996. Changes to gasoline composition required by Phase 2 specifications included: lower vapor pressure; lower olefin, aromatic, benzene, and sulfur content; lower T50 and T90; and a minimum oxygen content. In this paper, impacts of Phase 2 RFG on the atmospheric reactivity of motor vehicle exhaust and evaporative emissions are described. Volatile organic compounds in motor vehicle exhaust were measured at the Caldecott tunnel in summer 1995 and 1996. Aggregate emissions of greater than 8000 vehicles were measured each day. Regular and premium grade gasoline samples were collected from service stations in Berkeley concurrently with tunnel measurements both summers. Liquid gasoline samples and their headspace vapors were analyzed to determine detailed chemical composition. Normalized reactivity was calculated for exhaust and evaporative emissions by applying maximum incremental reactivity values to the detailed speciation profiles. Results indicate that the composition of gasoline in 1996 differed markedly from that of 1995. Changes in liquid gasoline composition led to corresponding changes in the speciation of vehicle exhaust and of gasoline headspace vapors. Benzene concentration in liquid gasoline decreased from 2.0 to 0.6 wt%, which contributed to a 70 and 37% reduction in benzene weight fraction in headspace vapors and vehicle exhaust, respectively. Addition of MTBE and reduction of olefins and aromatics in gasoline led to significant reductions in the atmospheric reactivity of unburned gasoline and gasoline headspace vapors. The normalized reactivity of liquid gasoline and headspace vapors decreased by 23 and 19%, respectively, between 1995 and 1996. The normalized reactivity of non-methane organic compounds in vehicle exhaust decreased by about 8%, but the uncertainty in this change was large.

  15. A Detailed Chemical Kinetic Reaction Mechanism for n-Alkane Hydrocarbons from n-Octane to n-Hexadecane

    SciTech Connect (OSTI)

    Westbrook, C K; Pitz, W J; Herbinet, O; Silke, E J; Curran, H J

    2007-09-25

    Detailed chemical kinetic reaction mechanisms have been developed to describe the pyrolysis and oxidation of the n-alkanes, including n-octane (n-C{sub 8}H{sub 18}), n-nonane (n-C{sub 9}H{sub 20}), n-decane (n-C{sub 10}H{sub 22}), n-undecane (n-C{sub 11}H{sub 24}), n-dodecane (n-C{sub 12}H{sub 26}), n-tridecane (n-C{sub 13}H{sub 28}), n-tetradecane (n-C{sub 14}H{sub 30}), n-pentadecane (n-C{sub 15}H{sub 32}), and n-hexadecane (n-C{sub 16}H{sub 34}). These mechanisms include both high temperature and low temperature reaction pathways. The mechanisms are based on previous mechanisms for n-heptane, using the same reaction class mechanism construction developed initially for n-heptane. Individual reaction class rules are as simple as possible in order to focus on the parallelism between all of the n-alkane fuels included in the mechanisms, and there is an intent to develop these mechanisms further in the future to incorporate greater levels of accuracy and predictive capability. Several of these areas for improvement are identified and explained in detail. These mechanisms are validated through comparisons between computed and experimental data from as many different sources as possible. In addition, numerical experiments are carried out to examine features of n-alkane combustion in which the detailed mechanisms can be used to compare processes in all of the n-alkane fuels. The mechanisms for all of these n-alkanes are presented as a single detailed mechanism, which can be edited to produce efficient mechanisms for any of the n-alkanes included, and the entire mechanism, with supporting thermochemical and transport data, together with an explanatory glossary explaining notations and structural details, will be available on our web page when the paper is accepted for publication.

  16. Table A1. Refiner/Reseller Motor Gasoline Prices by Grade, PAD...

    U.S. Energy Information Administration (EIA) Indexed Site

    Information Administration Petroleum Marketing Annual 1995 Table A1. RefinerReseller Motor Gasoline Prices by Grade, PAD District and State, 1984-Present (Cents per Gallon...

  17. Table 31. Motor Gasoline Prices by Grade, Sales Type, PAD District...

    U.S. Energy Information Administration (EIA) Indexed Site

    table. 56 Energy Information AdministrationPetroleum Marketing Annual 1998 Table 31. Motor Gasoline Prices by Grade, Sales Type, PAD District, and State (Cents per Gallon...

  18. Table 31. Motor Gasoline Prices by Grade, Sales Type, PAD District...

    U.S. Energy Information Administration (EIA) Indexed Site

    table. 56 Energy Information AdministrationPetroleum Marketing Annual 1999 Table 31. Motor Gasoline Prices by Grade, Sales Type, PAD District, and State (Cents per Gallon...

  19. Table 6. U.S. Refiner Motor Gasoline Prices by Grade and Sales...

    U.S. Energy Information Administration (EIA) Indexed Site

    Information Administration Petroleum Marketing Annual 1995 Table 6. U.S. Refiner Motor Gasoline Prices by Grade and Sales Type (Cents per Gallon Excluding Taxes) - Continued...

  20. Table A1. Refiner/Reseller Motor Gasoline Prices by Grade, PAD...

    U.S. Energy Information Administration (EIA) Indexed Site

    AdministrationPetroleum Marketing Annual 1999 401 Table A1. RefinerReseller Motor Gasoline Prices by Grade, PAD District and State, 1984-Present (Cents per Gallon...

  1. Table 7. U.S. Refiner Motor Gasoline Volumes by Grade and Sales...

    U.S. Energy Information Administration (EIA) Indexed Site

    Information Administration Petroleum Marketing Annual 1995 Table 7. U.S. Refiner Motor Gasoline Volumes by Grade and Sales Type (Million Gallons per Day) - Continued Year...

  2. Table 31. Motor Gasoline Prices by Grade, Sales Type, PAD District...

    U.S. Energy Information Administration (EIA) Indexed Site

    table. 56 Energy Information Administration Petroleum Marketing Annual 1995 Table 31. Motor Gasoline Prices by Grade, Sales Type, PAD District, and State (Cents per Gallon...

  3. Fact #915: March 7, 2016 Average Historical Annual Gasoline Pump Price,

    Energy Savers [EERE]

    1929-2015 - Dataset | Department of Energy 5: March 7, 2016 Average Historical Annual Gasoline Pump Price, 1929-2015 - Dataset Fact #915: March 7, 2016 Average Historical Annual Gasoline Pump Price, 1929-2015 - Dataset Excel file and dataset for Average Historical Annual Gasoline Pump Price, 1929-2015 File fotw#915_web.xlsx More Documents & Publications Fact #835: August 25, 2014 Average Annual Gasoline Pump Price, 1929-2013 - Dataset Fact #888: August 31, 2015 Historical Gas Prices -

  4. ,"U.S. Sales to End Users, Total Refiner Motor Gasoline Sales...

    U.S. Energy Information Administration (EIA) Indexed Site

    Refiner Gasoline Volumes",1,"Monthly","22016","1151983" ,"Data 2","by Grade",3,"Monthly","22016","1151983" ,"Data 3","by Formulation",3,"Monthly","22016","1151994" ...

  5. ,"U.S. Sales for Resale, Total Refiner Motor Gasoline Sales Volumes...

    U.S. Energy Information Administration (EIA) Indexed Site

    Refiner Gasoline Volumes",1,"Monthly","22016","1151983" ,"Data 2","by Grade",3,"Monthly","22016","1151983" ,"Data 3","by Formulation",3,"Monthly","22016","1151994" ...

  6. 3-Cylinder Turbocharged Gasoline Direct Injection: A High Value Solution for Euro VI Emissions

    Broader source: Energy.gov [DOE]

    3-cylindery gasoline direct injection engines offer similar value in CO2 reduction capability (Euros/% CO2 reduction) at a significantly lower on-cost.

  7. Vehicle Technologies Office Merit Review 2014: Advanced Gasoline Turbocharged Direct Injection (GTDI) Engine Development

    Broader source: Energy.gov [DOE]

    Presentation given by Ford Motor Companyh at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about advanced gasoline...

  8. Vehicle Technologies Office Merit Review 2015: Advanced Gasoline Turbocharged Direct Injection (GTDI) Engine Development

    Broader source: Energy.gov [DOE]

    Presentation given by Cummins at 2015 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about advanced gasoline turbocharged direct...

  9. Modeling and Analysis of Natural Gas and Gasoline In A High Compression Ratio High Efficiency ICRE

    Broader source: Energy.gov [DOE]

    performance of a high compression ratio (32:1 to 74:1) high efficiency (50 to 60% BTE) ICRE operating on natural gas and gasoline

  10. U.S. summer gasoline price to average 6 cents lower than last...

    Gasoline and Diesel Fuel Update (EIA)

    price. Gasoline demand this summer is expected to be slightly below last year's level, as more fuel efficient vehicles more than offset the projected increase in highway travel

  11. FedEx Gasoline Hybrid Electric Delivery Truck Evaluation: 6-Month...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ... This work comprises chassis dynamometer testing of two medium-duty FedEx delivery vehicles, a gasoline hybrid electric vehicle (GHEV) and a conventional diesel (baseline) vehicle. ...

  12. Conversion of Low-Rank Wyoming Coals into Gasoline by Direct...

    Office of Scientific and Technical Information (OSTI)

    of Low-Rank Wyoming Coals into Gasoline by Direct Liquefaction Polyakov, Oleg 01 COAL, LIGNITE, AND PEAT Under the cooperative agreement program of DOE and funding from...

  13. Fact #915: March 7, 2016 Average Historical Annual Gasoline Pump Price,

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

    1929-2015 | Department of Energy 915: March 7, 2016 Average Historical Annual Gasoline Pump Price, 1929-2015 Fact #915: March 7, 2016 Average Historical Annual Gasoline Pump Price, 1929-2015 SUBSCRIBE to the Fact of the Week When adjusted for inflation, the average annual price of gasoline has fluctuated greatly, and has recently experienced sharp increases and decreases. The effect of the U.S. embargo of oil from Iran can be seen in the early 1980's with the price of gasoline peaking in

  14. Average U.S. household to spend $710 less on gasoline during 2015

    U.S. Energy Information Administration (EIA) Indexed Site

    Average U.S. household to spend $710 less on gasoline during 2015 Even with the recent increases in gasoline prices, the average U.S. household is still expected save $710 in gasoline costs this year compared with what was paid at the pump in 2014. In its new monthly forecast, the U.S. Energy Information Administration said the national average price for regular gasoline is expected to be $2.39 per gallon this year. That's almost $1 less than the $3.36 average in 2014. Lower crude oil prices

  15. East Coast blizzard cuts into gasoline demand, but home electricity demand rises

    U.S. Energy Information Administration (EIA) Indexed Site

    East Coast blizzard cuts into gasoline demand, but home electricity demand rises U.S. monthly gasoline consumption declined in January, as the big winter storm that shut down many East Coast cities kept people in their homes and off the road. In its new monthly forecast, the U.S. Energy Information Administration said monthly gasoline consumption dropped 230,000 barrels per day in January compared to year-ago levels and that marked the first year-over-year decline in monthly gasoline use since

  16. Gasoline price to average below $2 in 2016 for first time in 12 years

    U.S. Energy Information Administration (EIA) Indexed Site

    Gasoline price to average below $2 in 2016 for first time in 12 years The annual average price for U.S. regular-grade gasoline is expected to fall below $2 per gallon this year for the first time since 2004. In its new monthly forecast, the U.S. Energy Information Administration said drivers will pay on average $1.98 per gallon to fill up at the pump with regular-grade gasoline. EIA expects the monthly average price of gasoline to reach a seven-year low of $1.82 per gallon in February, before

  17. SwRI's HEDGE Technology for High Efficiency, Low Emissions Gasoline...

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

    Efficiency Engine Technologies and an Introduction to SwRI's Dedicated EGR Concept Development of Dual-Fuel Engine for Class 8 Applications Gasoline Ultra Fuel Efficient Vehicle...

  18. Methods of producing alkylated hydrocarbons from an in situ heat treatment process liquid

    DOE Patents [OSTI]

    Roes, Augustinus Wilhelmus Maria; Mo, Weijian; Muylle, Michel Serge Marie; Mandema, Remco Hugo; Nair, Vijay

    2009-09-01

    A method for producing alkylated hydrocarbons is disclosed. Formation fluid is produced from a subsurface in situ heat treatment process. The formation fluid is separated to produce a liquid stream and a first gas stream. The first gas stream includes olefins. The liquid stream is fractionated to produce at least a second gas stream including hydrocarbons having a carbon number of at least 3. The first gas stream and the second gas stream are introduced into an alkylation unit to produce alkylated hydrocarbons. At least a portion of the olefins in the first gas stream enhance alkylation.

  19. U.S. gasoline price continues to increase (long version)

    U.S. Energy Information Administration (EIA) Indexed Site

    long version) The U.S. average retail price for regular gasoline rose to $2.30 a gallon on Monday. That's up 5.8 cents from a week ago, based on the weekly price survey by the U.S. Energy Information Administration. Pump prices were highest in the West Coast states at 2.66 a gallon, up 1.4 cents from a week ago. Prices were lowest in the Gulf Coast states at 2.06 a gallon, up 7.7 cents.

  20. Technical comparison between Hythane, GNG and gasoline fueled vehicles

    SciTech Connect (OSTI)

    Not Available

    1992-05-01

    This interim report documents progress on this 2-year Alternative Fuel project, scheduled to end early 1993. Hythane is 85 vol% compressed natural gas (CNG) and 15 vol% hydrogen; it has the potential to meet or exceed the California Ultra-Low Emission Vehicle (ULEV) standard. Three USA trucks (3/4 ton pickup) were operated on single fuel (unleaded gasoline, CNG, Hythane) in Denver. The report includes emission testing, fueling facility, hazard and operability study, and a framework for a national hythane strategy.