National Library of Energy BETA

Sample records for internal combustion engine

  1. Rotary internal combustion engine

    SciTech Connect (OSTI)

    Le, L.K.

    1990-11-20

    This patent describes an internal combustion engine comprising; a rotary compressor mechanism; a rotary expander mechanism; and combustion chamber means disposed between the compressor mechanism and the expander mechanism, whereby compressed air is delivered to the combustion chamber through the compressor discharge port, and pressurized gas is delivered from the combustion chamber into the expander mechanism through the pressurized gas intake port.

  2. Internal combustion engine

    SciTech Connect (OSTI)

    Bernauer, O.

    1980-10-07

    An internal combustion engine is described that has walls delimiting the working space or spaces of the internal combustion engine, in which a hydrogen-impervious, encapsulated metal hydride storage device is provided which is in heat-conducting contact with these walls; the interior of the encapsulation is adapted to be selectively connected to a source of hydrogen and/or to a separate further hydrogen storage device.

  3. Internal combustion engine

    SciTech Connect (OSTI)

    Perrin, G.; Bergmann, H.

    1984-06-12

    An externally auto-ignited four-stroke internal combustion engine which includes a combustion chamber disposed in an upper surface of a piston such that, in an upper dead-center position of the piston, the combustion chamber receives almost all of the fuel-air mixture. The combustion chamber includes a planar bottom portion and has a cross-sectional shape of a truncated cone expanding in a direction of the cylinder head. The internal combustion engine also includes a recess or depression provided in the cylinder head and disposed eccentrically with respect to a longitudinal center axis of the cylinder. The depression or recess in the cylinder head has the shape of a truncated cone expanding in a direction of the piston, with a spark plug projecting or penetrating into the recess or depression in the cylinder head. In order to enable the achievement of good combustion, increased overall engine performance, and the minimum amount of harmful components in the exhaust gases from the engine when different types of fuel are used, predetermined constructional parameters are selected with respect to the combustion chamber and recess or depression disposed above the combustion chamber as well as the disposition of the combustion chamber with respect to a longitudinal center axis of the cylinder.

  4. Rotary internal combustion engine

    SciTech Connect (OSTI)

    Murray, J.L.

    1993-07-20

    A multi bank power plant is described comprising at least a first and a second rotary internal combustion engine connectable together in series, each of the engines comprising: a housing; a cam track internally disposed within the housing and adapted to receive a cam follower; an engine block disposed within the housing and rotatable about a central axis; an output shaft extending axially from each the engine block, each output shaft being coaxial with the other; means for coupling the output shafts together so that the output shafts rotate together in the same direction at the same speed; at least one radially arranged cylinder assembly on each block, each cylinder assembly including a cylinder having a longitudinal axis extending generally radially outwardly from the rotational axis of the block, the cylinder including means defining an end wall, a piston member disposed within the cylinder and adapted to reciprocate within the cylinder; a combustion chamber, means permitting periodic introduction of air and fuel into the combustion chamber, means for causing combustion of a compressed mixture of air and fuel within the combustion chamber, means permitting periodic exhaust of products of combustion of air and fuel from the combustion chamber, and means for imparting forces and motions of the piston within the cylinder to and from the cam track, the means comprising a cam follower operatively connected to the piston; wherein the cam track includes at least a first segment and at least a second segment thereof, the first segment having a generally positive slope wherein the segment has a generally increasing radial distance from the rotational axis of the engine block whereby as a piston moves outwardly in a cylinder on a power stroke while the cam follower is in radial register with the cam track segment, the reactive force of the respective cam follower against the cam track segment acts in a direction tending to impart rotation to the engine block.

  5. Internal combustion rotary engine

    SciTech Connect (OSTI)

    Chen, S.P.

    1993-08-24

    An internal combustion rotary engine is described comprising: an internal combustion chamber wherein a combustible fuel-air mixture is ignited for producing a driving gas flow; a central rotor having an outer surface in which at least one group of curved channels circumferentially-and-axially extending without radially extending through the central rotor; and at least one annular rotor each enclosing the central rotor having an inner surface in which a corresponding number of curved channels circumferentially-and-axially extending without radially extending through the annular rotor; when the curved channels in the central rotor communicate with the curved channels in the annular rotor, the driving gas flow circumferentially-and-axially passing between the outer surface of the central rotor and the inner surface of the annular rotor for rotating the central rotor and the annular rotor in opposite directions.

  6. Rotary internal combustion engine

    SciTech Connect (OSTI)

    Murray, J.L.; Mosca, J.O.

    1992-02-25

    This patent describes a rotary internal combustion engine. It includes a housing; a cam track internally disposed within the housing and adapted to receive a cam follower; an engine block disposed within the housing, the engine block being relatively rotatable within the housing about a central axis; means connectable to an external drive member for translating the relative rotation of the engine block with respect to the housing into useful work; at least one radially arranged cylinder assembly on the block, each cylinder assembly including a cylinder having a longitudinal axis extending generally radially outwardly from the rotational axis of the block, the cylinder including means defining an end wall, a piston member disposed within the cylinder and adapted to reciprocate within the cylinder; the piston, cylinder and cylinder end wall together.

  7. International combustion engines; Applied thermosciences

    SciTech Connect (OSTI)

    Ferguson, C.R.

    1985-01-01

    Focusing on thermodynamic analysis - from the requisite first law to more sophisticated applications - and engine design, this book is an introduction to internal combustion engines and their mechanics. It covers the many types of internal combustion engines, including spark ignition, compression ignition, and stratified charge engines, and examines processes, keeping equations of state simple by assuming constant specific heats. Equations are limited to heat engines and later applied to combustion engines. Topics include realistic equations of state, stroichiometry, predictions of chemical equilibrium, engine performance criteria, and friction, which is discussed in terms of the hydrodynamic theory of lubrication and experimental methods such as dimensional analysis.

  8. Internal combustion engine

    DOE Patents [OSTI]

    Baker, Quentin A.; Mecredy, Henry E.; O'Neal, Glenn B.

    1991-01-01

    An improved engine is provided that more efficiently consumes difficult fuels such as coal slurries or powdered coal. The engine includes a precombustion chamber having a portion thereof formed by an ignition plug. The precombustion chamber is arranged so that when the piston is proximate the head, the precombustion chamber is sealed from the main cylinder or the main combustion chamber and when the piston is remote from the head, the precombustion chamber and main combustion chamber are in communication. The time for burning of fuel in the precombustion chamber can be regulated by the distance required to move the piston from the top dead center position to the position wherein the precombustion chamber and main combustion chamber are in communication.

  9. AVTA: Hydrogen Internal Combustion Engine Vehicle Specifications...

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

    Hydrogen Internal Combustion Engine Vehicle Specifications and Test Procedures AVTA: Hydrogen Internal Combustion Engine Vehicle Specifications and Test Procedures HICEV Technical ...

  10. Low emission internal combustion engine

    DOE Patents [OSTI]

    Karaba, Albert M.

    1979-01-01

    A low emission, internal combustion compression ignition engine having a cylinder, a piston movable in the cylinder and a pre-combustion chamber communicating with the cylinder near the top thereof and in which low emissions of NO.sub.x are achieved by constructing the pre-combustion chamber to have a volume of between 70% and 85% of the combined pre-chamber and main combustion chamber volume when the piston is at top dead center and by variably controlling the initiation of fuel injection into the pre-combustion chamber.

  11. Steam boosted internal combustion engine

    SciTech Connect (OSTI)

    Green, M.A.

    1987-01-20

    A device is described to supplement the power produced by burning fuel in an internal combustion engine with steam, the device comprising: a means for producing a constant flow of water past a boiler means; a means for allowing the water to flow in the direction of the boiler; a boiler means external to the internal combustion engine to convert the water into superheated steam; a means for controlling the pressure of the water such that the water pressure is greater than the pressure of the steam produced by the boiler; and a means for injection of the superheated steam directly into a cylinder of the internal combustion engine, a means for producing a constant flow of water at a pressure greater than the pressure of the superheated steam, wherein the constant flow means at greater pressure comprises a chamber with a gaseous component, with the gaseous component being of constant volume and exerting constant pressure upon water within the chamber.

  12. Stratified charge internal combustion engine

    SciTech Connect (OSTI)

    Skopil, A.O.

    1991-01-01

    This patent describes an internal combustion engine. It comprises: a main cylinder, a main piston within the main cylinder, and means for delivering a combustible charge into the main cylinder; a smaller idle cylinder, and idle piston within the idle cylinder, and means for delivering a combustible charge into the idle cylinder; an ignition passageway leading from the idle cylinder to the main cylinder; and an ignition device within the ignition passageway operable to ignite a compressed charge discharged by the idle cylinder into the ignition passageway. The passageway being positioned to discharge the ignited compressed charge from the idle cylinder into the main cylinder to ignite the compressed charge within the main cylinder.

  13. Rotary reciprocating internal combustion engine

    SciTech Connect (OSTI)

    Ogren, W.

    1992-06-23

    This patent describes a rotary reciprocating internal combustion engine. It comprises a housing which comprises a cylindrical head with two end and frame plates mounted on both ends of the head enclose the head, the head including a pair of fuel into ports and a pair of exhaust ports, a pair of ring gears; a rotor axially aligned in the cylindrical head and comprising a set of four radially extending cylinders and pistons reciprocable in the cylinders; a power take off shaft fixed to the crank support plates and axially aligned with the rotor; oiling means for oiling the rotary engine; and a set of eight crank gears.

  14. Internal combustion engine fuel feed

    SciTech Connect (OSTI)

    Cochard, P.; Guicherd, C.

    1980-02-19

    In a method and apparatus for controlling the fuel feed to a stratified-charge internal combustion engine, from idle up to the position corresponding with the maximum flow of air, the overall richness (Rg) of the combustible mixture is reduced by acting simultaneously upon the flow of fuel feeding the main chamber and upon the flow of fuel injected into the auxiliary chamber. For higher loads the maximum flow of air is kept constant and rg is increased by continuing to act upon both fuel flows. By keeping the richness of the mixture in the auxiliary chamber substantially constant, it is possible to obtain the best compromise between the performance of the engine and the emission of pollutant gases.

  15. Rotary valve internal combustion engine

    SciTech Connect (OSTI)

    Bunk, P.H.

    1989-03-28

    A rotary valve internal combustion engine is described, comprising: an engine block; at least one cylinder in the engine block; at least one cylinder having a top end; cylinder head means located adjacent the top end of at least one cylinder, the cylinder head means having a cylindrically shaped cavity therein, the cylindrically shaped cavity being oriented in perpendicular relation to at least one cylinder; a piston sealingly mounted in at least one cylinder for reciprocable movement therein, the reciprocable movement including an intake stroke and an exhaust stroke; engine shaft means rotatably mounted to the engine block; means within the engine block for converting the reciprocable movement of the piston into rotary motion of the engine shaft means; a cylinder port located at the top end of at least one cylinder; a rotary valve rotatably mounted in the cylindrically shaped cavity; means connected with the engine shaft means for rotating the rotary valve in a predetermined synchronization with the reciprocable movement of the piston; aspiration means in the rotary valve for selectively aspirating at least one cylinder during the intake an exhaust strokes; and a spark plug removably mounted within the rotary valve and rotatable therewith.

  16. Advancing Internal Combustion Engine Simulations using Sensitivity...

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

    Advancing Internal Combustion Engine Simulations using Sensitivity Analysis PI Name: Sibendu Som PI Email: ssom@anl.gov Institution: Argonne National Laboratory Allocation Program:...

  17. Carburetor for internal combustion engines

    DOE Patents [OSTI]

    Csonka, John J.; Csonka, Albert B.

    1978-01-01

    A carburetor for internal combustion engines having a housing including a generally discoidal wall and a hub extending axially from the central portion thereof, an air valve having a relatively flat radially extending surface directed toward and concentric with said discoidal wall and with a central conoidal portion having its apex directed toward the interior of said hub portion. The housing wall and the radially extending surface of the valve define an air passage converging radially inwardly to form an annular valving construction and thence diverge into the interior of said hub. The hub includes an annular fuel passage terminating at its upper end in a circumferential series of micro-passages for directing liquid fuel uniformly distributed into said air passage substantially at said valving constriction at right angles to the direction of air flow. The air valve is adjustable axially toward and away from the discoidal wall of the carburetor housing to regulate the volume of air drawn into the engine with which said carburetor is associated. Fuel is delivered under pressure to the fuel metering valve and from there through said micro-passages and controlled cams simultaneously regulate the axial adjustment of said air valve and the rate of delivery of fuel through said micro-passages according to a predetermined ratio pattern. A third jointly controlled cam simultaneously regulates the ignition timing in accordance with various air and fuel supply settings. The air valve, fuel supply and ignition timing settings are all independent of the existing degree of engine vacuum.

  18. Injector tip for an internal combustion engine

    DOE Patents [OSTI]

    Shyu, Tsu Pin; Ye, Wen

    2003-05-20

    This invention relates to a the tip structure of a fuel injector as used in a internal combustion engine. Internal combustion engines using Homogeneous Charge Compression Ignition (HCCI) technology require a tip structure that directs fuel spray in a downward direction. This requirement necessitates a tip design that is capable of withstanding mechanical stresses associated with the design.

  19. Internal combustion engine with rotary combustion chamber

    SciTech Connect (OSTI)

    Hansen, C.N.; Cross, P.C.

    1986-09-23

    This patent describes an internal combustion engine comprising: a block having at least one cylindrical wall surrounding a piston chamber, piston means located in the piston chamber means operable to reciprocate the piston means in the chamber, head means mounted on the block covering the chamber. The head means has an air and fuel intake passage, and exhaust gas passage, a rotary valve assembly operatively associated with the head means for controlling the flow of air and fuel into the rotary valve assembly and piston chamber and the flow of exhaust gas from rotary valve assembly and the piston chamber. The means has a housing with a bore open to the piston chamber accommodating the rotary valve assembly, the valve assembly comprising a cylindrical sleeve located in the bore, the sleeve having an inner surface, an ignition hole, and intake and exhaust ports aligned with the intake passage and exhaust gas passage, spark generating means mounted on the housing operable to generate a spark. The rotatable valving means is located within the sleeve for controlling the flow of air and fuel into the rotary valve assembly and piston chamber and the flow of exhaust gases out of the rotary valve assembly and piston chamber.

  20. Internal combustion engine and method for control

    SciTech Connect (OSTI)

    Brennan, Daniel G

    2013-05-21

    In one exemplary embodiment of the invention an internal combustion engine includes a piston disposed in a cylinder, a valve configured to control flow of air into the cylinder and an actuator coupled to the valve to control a position of the valve. The internal combustion engine also includes a controller coupled to the actuator, wherein the controller is configured to close the valve when an uncontrolled condition for the internal engine is determined.

  1. Open cycle, internal combustion Stirling engine

    SciTech Connect (OSTI)

    Thring, R.H.

    1991-09-24

    This patent describes an internal- combustion fluid engine. It comprises means, including a hot piston, for defining a combustion chamber; means for causing combustion within the combustion chamber; means, including a cold piston, for defining a compression chamber for pressurizing a fluid; inlet control means for controlling flow of the fluid into the compression chamber; cooling means for maintaining lower temperature in the compression chamber than in the combustion chamber; means, comprising linkage between the hot piston and the cold piston, for varying the volume of the compression chamber in relation to the volume of the combustion chamber in a manner characteristic of a conventional Stirling engine; a manifold connected in fluid communication between the combustion chamber and the compression chamber for enabling flow of the fluid from the compression chamber to the compression chamber; transfer control means for controlling the flow of the fluid from the compression chamber to the combustion chamber.

  2. Starting apparatus for internal combustion engines

    DOE Patents [OSTI]

    Dyches, G.M.; Dudar, A.M.

    1995-01-01

    This report is a patent description for a system to start an internal combustion engine. Remote starting and starting by hearing impaired persons are addressed. The system monitors the amount of current being drawn by the starter motor to determine when the engine is started. When the engine is started the system automatically deactivates the starter motor. Five figures are included.

  3. Control system for supercharged internal combustion engine

    SciTech Connect (OSTI)

    Kawamura, H.

    1988-05-24

    A control system for controlling an internal combustion engine is described having a supercharge including a rotatable shaft and an exhaust turbine driven by exhaust gas. The control system comprising: a rotary electric machine mounted on the rotatable shaft of the supercharger for imposing a load on the exhaust turbine of the supercharger; setting means for setting an engine brake mode of the internal combustion engine; and operating means for operating the rotary electric machine when the engine brake mode is set by the setting means.

  4. Internal combustion engine injection superheated steam

    SciTech Connect (OSTI)

    Mahoney, F.G.

    1991-01-22

    This patent describes a method for introducing water vapor to the combustion chambers of an internal combustion engine. It comprises: introducing a metered amount of liquid water into a heat exchanger; contacting the heat exchanger directly with hot exhaust gases emanating from the exhaust manifold; maintaining the water in the heat exchanger for a period sufficient to vaporize the water into steam and superheat same; reducing pressure and increasing temperature to create superheated steam; introducing the superheated steam into the air supply proximate to the air induction system, upstream of any carburetion, of the internal combustion engine.

  5. Two phase exhaust for internal combustion engine

    DOE Patents [OSTI]

    Vuk, Carl T.

    2011-11-29

    An internal combustion engine having a reciprocating multi cylinder internal combustion engine with multiple valves. At least a pair of exhaust valves are provided and each supply a separate power extraction device. The first exhaust valves connect to a power turbine used to provide additional power to the engine either mechanically or electrically. The flow path from these exhaust valves is smaller in area and volume than a second flow path which is used to deliver products of combustion to a turbocharger turbine. The timing of the exhaust valve events is controlled to produce a higher grade of energy to the power turbine and enhance the ability to extract power from the combustion process.

  6. Fuel injector nozzle for internal combustion engine

    SciTech Connect (OSTI)

    Klomp, E.D.; Peters, B.D.

    1990-06-12

    This patent describes a fuel injection nozzle for a combustion chamber of an internal combustion engine. It comprises: a nozzle body with at least one fuel flow opening therethrough for feed fuel to the chamber, a resilient diaphragm normally sealing the opening and having orifice means therein for further atomizing and directing the pulses into the chamber, fastening means for fixing the diaphragm to the body so that diaphragm can deflect by a predetermined amount under low engine load operating conditions so that a wide angle cone of atomized fuel is injected into and generally at one end of the combustion chamber for the stratified charge thereof and deflect by an amount greater than the first amount of deflection under high engine load operating conditions. A narrow spray cone of atomized fuel is injected in a deeper pattern into and throughout the combustion chamber for optimizing the charge thereof and fuel burns under the low and high load engine operating conditions.

  7. Combustion Analysis Software Package for Internal Combustion Engines -

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

    Energy Innovation Portal Vehicles and Fuels Vehicles and Fuels Industrial Technologies Industrial Technologies Energy Analysis Energy Analysis Find More Like This Return to Search Combustion Analysis Software Package for Internal Combustion Engines Colorado State University Contact CSU About This Technology Technology Marketing Summary Researchers at the Colorado State University Engines and Energy Conversion Laboratory have developed a complete software package for use with National

  8. Findings of Hydrogen Internal Combustion Engine Durability

    SciTech Connect (OSTI)

    Garrett Beauregard

    2010-12-31

    Hydrogen Internal Combustion Engine (HICE) technology takes advantage of existing knowledge of combustion engines to provide a means to power passenger vehicle with hydrogen, perhaps as an interim measure while fuel cell technology continues to mature. This project seeks to provide data to determine the reliability of these engines. Data were collected from an engine operated on a dynamometer for 1000 hours of continuous use. Data were also collected from a fleet of eight (8) full-size pickup trucks powered with hydrogen-fueled engines. In this particular application, the data show that HICE technology provided reliable service during the operating period of the project. Analyses of engine components showed little sign of wear or stress except for cylinder head valves and seats. Material analysis showed signs of hydrogen embrittlement in intake valves.

  9. Multiple vane rotary internal combustion engine

    SciTech Connect (OSTI)

    Pangman, E.L.

    1994-01-11

    A three-piece housing enclosing a cavity has rotatably mounted therein a rotor having a plurality of slots, each slot supporting a vane. Each vane has a retention end guided in its revolution around the rotor by an internal, non-circular vane retention track. Two adjacent vanes define opposite sides of a combustion chamber, while the housing and the portion of the rotor between the adjacent vanes form the remaining surfaces of the combustion chamber. Each combustion chamber is rotated past an intake port, a diagonal plasma bleed-over groove, and an exhaust port to accomplish the phases of a combustion cycle. Fuel ignition is provided to more than one combustion chamber at a time by expanding gases passing through a plasma bleed-over groove and being formed into a vortex that ignites and churns the charge in a succeeding combustion chamber. Exhaust gases remaining after primary evacuation are removed by a secondary evacuation system utilizing a venturi creating negative pressure which evacuates the combustion chamber. Lubrication is circulated through the engine without the use of a lubricant pump. The centrifugal force of the rotating rotor causes the lubricant therein to be pressurized thereby drawing additional lubricant into the closed system and forcing lubricant within the engine to be circulated. 9 figs.

  10. Internal combustion engine with an exhaust gas turbocharger

    SciTech Connect (OSTI)

    Hiereth, H.; Withalm, G.

    1981-06-09

    An internal combustion engine with an exhaust-gas turbocharger, particularly a mixture-compressing internal combustion engine, is disclosed in which a bleeder valve is provided which during the operation of the internal combustion engine in the partial load range conducts the exhaust gases in bypassing relationship to the turbine of the exhaust gas turbocharger.

  11. Starting apparatus for internal combustion engines

    DOE Patents [OSTI]

    Dyches, Gregory M.; Dudar, Aed M.

    1997-01-01

    An internal combustion engine starting apparatus uses a signal from a curt sensor to determine when the engine is energized and the starter motor should be de-energized. One embodiment comprises a transmitter, receiver, computer processing unit, current sensor and relays to energize a starter motor and subsequently de-energize the same when the engine is running. Another embodiment comprises a switch, current transducer, low-pass filter, gain/comparator, relay and a plurality of switches to energize and de-energize a starter motor. Both embodiments contain an indicator lamp or speaker which alerts an operator as to whether a successful engine start has been achieved. Both embodiments also contain circuitry to protect the starter and to de-energize the engine.

  12. Starting apparatus for internal combustion engines

    SciTech Connect (OSTI)

    Dyches, G.M.; Dudar, A.M.

    1997-02-11

    An internal combustion engine starting apparatus uses a signal from a curt sensor to determine when the engine is energized and the starter motor should be de-energized. One embodiment comprises a transmitter, receiver, computer processing unit, current sensor and relays to energize a starter motor and subsequently de-energize the same when the engine is running. Another embodiment comprises a switch, current transducer, low-pass filter, gain/comparator, relay and a plurality of switches to energize and de-energize a starter motor. Both embodiments contain an indicator lamp or speaker which alerts an operator as to whether a successful engine start has been achieved. Both embodiments also contain circuitry to protect the starter and to de-energize the engine. 5 figs.

  13. Internal combustion engine with sustained power stroke

    SciTech Connect (OSTI)

    McNair, R.J.

    1980-09-09

    A four stroke cycle internal combustion engine is presented having a sustained power stroke which results from a delayed mixing of a stratified charge. Use of delayed mixing of an overall stoichiometric air-fuel mixture results in formation of a low amount of the oxides of nitrogen. Delayed mixing of the stratified charge is achieved by placement of at least one Helmholtz resonator cavity in the head or closed end of each combustion chamber. The Helmholtz resonator cavity communicates with the top end of the main combustion chamber via a narrow slot. On the intake stroke of each engine cylinder, the main chamber is filled with a slightly fuel rich gaseous charge while the companion Helmholtz resonator cavity is filled with air. During the compression stroke some of the rich air-fuel mixture is forced into the resonator cavity via the communicating slot. At or near tdc, the air-fuel mixture in the main chamber is ignited. As the flame front progresses across the chamber a rapid increase in pressure serves not only to power the piston, but also to initiate a resonant reaction in the Helmholtz resonator cavity which results in a transfer of the unburned gases therein into the main combustion chamber. This both sustains the power stroke and at the same time lowers the peak flame temperature in the main chamber.

  14. Internal combustion engine with integral intercooler

    SciTech Connect (OSTI)

    Poore, B.B.; Beitel, H.V.; Weinert, S.

    1990-11-06

    This patent describes a liquid-cooled internal combustion engine. It comprises: a cylinder block; a cylinder head attached to the block and having formed therein a combustion air inlet, a coolant supply passage, a coolant return passage and an air supply passage for receiving turbocharged air; an intercooler having a coolant inlet and a coolant outlet; a first conduit communicating the intercooler coolant inlet with the coolant supply passage; a second conduit communicating the intercooler coolant outlet with the coolant return passage; a cover attachable to the cylinder head, the cover completely enclosing the intercooler and the first and second conduits; and the cover, the cylinder head and the intercooler being arranged so that turbocharged air flows from the air supply passage to the air inlet via the intercooler.

  15. Injection system of an internal combustion engine

    SciTech Connect (OSTI)

    Tegtmeier, D.

    1987-06-09

    This patent describes an injection system for an internal-combustion engine. It has separate inlet ports provided for each cylinder of the engine, and an intake pipe encompassing the inlet ports for each cylinder. The intake pipe has a subdividing web wall in the region of the cylinder head having a mixing chamber into which fuel is injected by an injection nozzle. The subdividing web wall subdivides the intake pipe into separate intake pipe sections and includes shot channels for communicating fuel from the mixing chamber to each of the separate intake pipe sections. By this arrangement, a constant, thorough mixing of the fuel/air mixture is achieved even at lower load and upper speed ranges of the engine.

  16. Jet plume injection and combustion system for internal combustion engines

    DOE Patents [OSTI]

    Oppenheim, A.K.; Maxson, J.A.; Hensinger, D.M.

    1993-12-21

    An improved combustion system for an internal combustion engine is disclosed wherein a rich air/fuel mixture is furnished at high pressure to one or more jet plume generator cavities adjacent to a cylinder and then injected through one or more orifices from the cavities into the head space of the cylinder to form one or more turbulent jet plumes in the head space of the cylinder prior to ignition of the rich air/fuel mixture in the cavity of the jet plume generator. The portion of the rich air/fuel mixture remaining in the cavity of the generator is then ignited to provide a secondary jet, comprising incomplete combustion products which are injected into the cylinder to initiate combustion in the already formed turbulent jet plume. Formation of the turbulent jet plume in the head space of the cylinder prior to ignition has been found to yield a higher maximum combustion pressure in the cylinder, as well as shortening the time period to attain such a maximum pressure. 24 figures.

  17. Jet plume injection and combustion system for internal combustion engines

    DOE Patents [OSTI]

    Oppenheim, Antoni K.; Maxson, James A.; Hensinger, David M.

    1993-01-01

    An improved combustion system for an internal combustion engine is disclosed wherein a rich air/fuel mixture is furnished at high pressure to one or more jet plume generator cavities adjacent to a cylinder and then injected through one or more orifices from the cavities into the head space of the cylinder to form one or more turbulent jet plumes in the head space of the cylinder prior to ignition of the rich air/fuel mixture in the cavity of the jet plume generator. The portion of the rich air/fuel mixture remaining in the cavity of the generator is then ignited to provide a secondary jet, comprising incomplete combustion products which are injected into the cylinder to initiate combustion in the already formed turbulent jet plume. Formation of the turbulent jet plume in the head space of the cylinder prior to ignition has been found to yield a higher maximum combustion pressure in the cylinder, as well as shortening the time period to attain such a maximum pressure.

  18. Exhaust gas system for internal combustion engines

    SciTech Connect (OSTI)

    Jans, K.; Ohlendorf, R.; Schuster, H.

    1981-09-08

    An exhaust gas system is disclosed for a multi-cylinder internal combustion engine, in which some cylinders are adapted to be effectively disconnected; the exhaust gas system includes in a common exhaust line, an O/sub 2/-probe and two series-connected catalysts while a separate exhaust gas line is coordinated to the cylinders adapted to be effectively disconnected; a control member operable as a function of load opens three separate branch connections from the separate exhaust line to the common exhaust line in such a manner that when all cylinders are firing, the branch connection terminating upstream of the O/sub 2/-probe is opened; the branch terminating in the common exhaust line between the O/sub 2/-probe and the first of the series-connected catalysts is opened when at least one of the cylinders is effectively disconnected and when the internal combustion engine is still relatively cold or warms up to a middle temperature; at temperatures exceeding the middle operating temperature, the branch connection terminating between the two catalysts is opened.

  19. Plasmatron Fuel Reformer Development and Internal Combustion Engine Vehicle

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

    Applications | Department of Energy Plasmatron Fuel Reformer Development and Internal Combustion Engine Vehicle Applications Plasmatron Fuel Reformer Development and Internal Combustion Engine Vehicle Applications 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Massachusetts Institute of Technology 2004_deer_bromberg.pdf (404.01 KB) More Documents & Publications Hydrogen generation from plasmatron reformers and use for diesel exhaust aftertreatment Onboard

  20. Integrated CHP/Advanced Reciprocating Internal Combustion Engine...

    Office of Environmental Management (EM)

    to meet local air quality authority emissions restrictions. Integrated Combined Heat and PowerAdvanced Reciprocating Internal Combustion Engine System for Landfill Gas to...

  1. Internal combustion engine with compound air compression

    SciTech Connect (OSTI)

    Paul, M.A.; Paul, A.

    1991-10-15

    This patent describes an internal combustion engine in combination with a compound air compression system. It comprises: a reciprocator with at least one cylinder, at least one piston reciprocal in the cylinder and a combustion chamber formed in substantial part by portions of the piston and cylinder, the reciprocator having a drive shaft; a rotary compressor having a drive shaft mechanically coupled to the drive shaft of the reciprocator, the rotary compressor having a Wankel-type, three-lobe, epitrochiodal configuration sides having a conduit conjected to the reciprocator for supplying compressed air to the reciprocator; a turbocharged with a gas turbine and a turbocompressor, the turbocompressor having an air conduit connected to the expander side of the rotary compressor; and a bypass conduit with a valve means connecting the turbocharger to the reciprocator for supplying compressed air directly to the reciprocator wherein the drive shaft of the reciprocator and the drive shaft of the compressor have connecting means for transmitting mechanical energy to the reciprocator at mid to high operating speeds of the engine when the turbocharge supplies compressed air to the rotary compressor and, at least in part, drives the rotary compressor.

  2. Hydrogen-fueled internal combustion engines.

    SciTech Connect (OSTI)

    Verhelst, S.; Wallner, T.; Energy Systems; Ghent Univ.

    2009-12-01

    The threat posed by climate change and the striving for security of energy supply are issues high on the political agenda these days. Governments are putting strategic plans in motion to decrease primary energy use, take carbon out of fuels and facilitate modal shifts. Taking a prominent place in these strategic plans is hydrogen as a future energy carrier. A number of manufacturers are now leasing demonstration vehicles to consumers using hydrogen-fueled internal combustion engines (H{sub 2}ICEs) as well as fuel cell vehicles. Developing countries in particular are pushing for H{sub 2}ICEs (powering two- and three-wheelers as well as passenger cars and buses) to decrease local pollution at an affordable cost. This article offers a comprehensive overview of H{sub 2}ICEs. Topics that are discussed include fundamentals of the combustion of hydrogen, details on the different mixture formation strategies and their emissions characteristics, measures to convert existing vehicles, dedicated hydrogen engine features, a state of the art on increasing power output and efficiency while controlling emissions and modeling.

  3. Fuel system for an internal combustion engine

    SciTech Connect (OSTI)

    Davison, M.J.; Mardell, J.E.; Mowbray, D.F.; Seilly, A.H.

    1982-10-26

    A fuel system for an internal combustion engine includes a pump/injector having an actuating winding to which power is supplied by a first electronic means. A first control signal is supplied by a second electronic means to energize the winding and a second control signal is supplied by a third electronic means to de-energize the winding. The third electronic means calculates the time at which the winding should be de-energized to allow the piston in the pump to draw in the required volume of fuel, the second electronic means causing delivery of fuel when the required volume of fuel has been drawn into the pumping chamber of the pump.

  4. Internal combustion engine utilizing stratified charge combustion process

    SciTech Connect (OSTI)

    Artman, N.G.

    1991-07-16

    This patent describes an internal combustion engine in which a piston is reciprocal alternately toward and from the upper end of a cylinder within a variable volume space adjacent to such end, a cylinder head having a face in closing relation with such cylinder end and containing a precombustion chamber with a sidewall having an inner periphery constructed about an axis extending upwardly from the cylinder and the periphery having an open lower end in two-way communication through the face with the variable volume space, the lower open end being smaller in diameter than the diameter of the cylinder, the upper end of the chamber having an air inlet passage closable by a valve, the chamber being operable when the valve is open and attendant to movement of the piston downwardly from the upper cylinder end to receive from the inlet passage a main inlet air stream and conduct the same downwardly therein and discharge the same through the open end downwardly therein and discharge the same through the open end downwardly into the variable volume space.

  5. High efficiency stoichiometric internal combustion engine system

    DOE Patents [OSTI]

    Winsor, Richard Edward; Chase, Scott Allen

    2009-06-02

    A power system including a stoichiometric compression ignition engine in which a roots blower is positioned in the air intake for the engine to control air flow. Air flow is decreased during part power conditions to maintain the air-fuel ratio in the combustion chamber of the engine at stoichiometric, thus enabling the use of inexpensive three-way catalyst to reduce oxides of nitrogen. The roots blower is connected to a motor generator so that when air flow is reduced, electrical energy is stored which is made available either to the roots blower to temporarily increase air flow or to the system electrical load and thus recapture energy that would otherwise be lost in reducing air flow.

  6. AVTA: Hydrogen Internal Combustion Engine Vehicle Specifications and Test

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

    Procedures | Department of Energy Hydrogen Internal Combustion Engine Vehicle Specifications and Test Procedures AVTA: Hydrogen Internal Combustion Engine Vehicle Specifications and Test Procedures HICEV Technical Specifications (127.53 KB) HICEV America Test Sequence (71.27 KB) ETA-HITP01 Implementation of SAE Standard J1263 - Road Load Measurements and Dynamometer Simulation Using Coast Down Techniques (114.28 KB) ETA-HITP02 Implementation of SAE Standard J1666 May93 - HICE Vehicle

  7. Variable compression ratio device for internal combustion engine

    DOE Patents [OSTI]

    Maloney, Ronald P.; Faletti, James J.

    2004-03-23

    An internal combustion engine, particularly suitable for use in a work machine, is provided with a combustion cylinder, a cylinder head at an end of the combustion cylinder and a primary piston reciprocally disposed within the combustion cylinder. The cylinder head includes a secondary cylinder and a secondary piston reciprocally disposed within the secondary cylinder. An actuator is coupled with the secondary piston for controlling the position of the secondary piston dependent upon the position of the primary piston. A communication port establishes fluid flow communication between the combustion cylinder and the secondary cylinder.

  8. Internal combustion engine utilizing stratified charge combustion process

    SciTech Connect (OSTI)

    Artman, N.G.

    1988-11-15

    This patent describes an internal combustion engine having a main air inlet passage communicating at an end thereof through the face of an cylinder head with an alternately expandable and contractable variable volume space in an end of a cylinder closed by such head, there being within the cylinder head a precombustion chamber forming a section of such passage and interposed between the space and an upstream portion of the passage, the chamber having a principal axis extending between opposite ends thereof and of which ends one is an air inlet and having a valve seat through which the chamber is communicative with the upstream passage portion and of which ends the other is an open end through which the passage has two-way communication with the space and is disposed to discharge air from the chamber into the space axially of the cylinder, the combination of air deflecting means in the chamber and operable during expansion of the space to modulate the flow of intake air passing through the chamber into the space into the form of a stream composed of a core portion flowing axially of the cylinder into the space and of a tubular portion encircling the core portion and flowing helically thereabout, fuel delivery means operable during a fuel injection period commencing during expansion of the space and subsequent to entry of a leading portion of the air stream into the space to inject evaporative fuel into the passage and into a trailing portion of the air stream therein at a rate to mix and form therewith an air-fuel mixture lean in fuel richness than flows within and at least partially through the chamber en route to the space during the expansion thereof. The fuel delivery means being operable to increase the volume of the trailing air stream portion mixed with fuel by advancing the starting time of the fuel injection period to increase the length of such period measured in units of space expansion.

  9. H2 Internal Combustion Engine Research Towards 45% efficiency...

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

    Optimization of Direct-Injection H2 Combustion Engine Performance, Efficiency, and Emissions Heavy-Duty Low-Temperature and Diesel Combustion & Heavy-Duty Combustion Modeling

  10. Combustion Engine

    Broader source: Energy.gov [DOE]

    Pictured here is an animation showing the basic mechanics of how an internal combustion engine works. With support from the Energy Department, General Motors researchers developed a new technology ...

  11. Four stroke concentric oscillating rotary vane internal combustion engine

    SciTech Connect (OSTI)

    Seno, C.L.

    1992-02-11

    This patent describes a four stroke concentric oscillating rotary vane internal combustion engine made up of a pair of cranking mechanisms, a pair of forced porting mechanisms, an output shaft mechanism, a stator, a rotor, four arcuate combustion chambers and longitudinal and transverse grooves for lubrication and dynamic sealing. It comprises the pair of cranking mechanisms control the oscillating rotary motion of the rotor, each cranking mechanism comprising: one end; the pair of forced porting mechanisms control the forced porting of air into and combustion by-products from the combustion chambers, each forced porting mechanism: products from the combustion chambers; the output shaft mechanism orchestrating and coordinating the synchronized iterative operations of the cranking.

  12. Internal combustion engine using premixed combustion of stratified charges

    DOE Patents [OSTI]

    Marriott, Craig D.; Reitz, Rolf D. (Madison, WI

    2003-12-30

    During a combustion cycle, a first stoichiometrically lean fuel charge is injected well prior to top dead center, preferably during the intake stroke. This first fuel charge is substantially mixed with the combustion chamber air during subsequent motion of the piston towards top dead center. A subsequent fuel charge is then injected prior to top dead center to create a stratified, locally richer mixture (but still leaner than stoichiometric) within the combustion chamber. The locally rich region within the combustion chamber has sufficient fuel density to autoignite, and its self-ignition serves to activate ignition for the lean mixture existing within the remainder of the combustion chamber. Because the mixture within the combustion chamber is overall premixed and relatively lean, NO.sub.x and soot production are significantly diminished.

  13. H2 Internal Combustion Engine Research Towards 45% efficiency and

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

    Tier2-Bin5 emissions | Department of Energy ace_09_wallner.pdf (2.11 MB) More Documents & Publications Optimization of Direct-Injection H2 Combustion Engine Performance, Efficiency, and Emissions Optimization of Direct-Injection H2 Combustion Engine Performance, Efficiency, and Emissions Heavy-Duty Low-Temperature and Diesel Combustion & Heavy-Duty Combustion Modeling

  14. Pneumatic starter for internal combustion engine

    SciTech Connect (OSTI)

    Kristoff, J.J.; Elwer, M.

    1992-05-12

    This patent describes a starter arrangement for an engine. It comprises a fluid actuated rotary vane motor which is adapted to engage an associated engine, the rotary motor having a hub and at least one blade which is slidably mounted in the hub and is made from a fiber reinforced plastic material to reduce friction, and wherein the at least one blade has a wear surface made of the same material; a housing including a sleeve in which the rotary motor is positioned, (a relay valve means for selectively providing a pressurized operating fluid to the rotary motor,) wherein the blade material and the sleeve inner surface coating cooperate to enable the motor to rotate in the sleeve with a minimum of friction thereby obviating the need for a lubricating system for the starter arrangement.

  15. Fuel injector nozzle for an internal combustion engine

    DOE Patents [OSTI]

    Cavanagh, Mark S.; Urven, Jr., Roger L.; Lawrence, Keith E.

    2008-11-04

    A direct injection fuel injector includes a nozzle tip having a plurality of passages allowing fluid communication between an inner nozzle tip surface portion and an outer nozzle tip surface portion and directly into a combustion chamber of an internal combustion engine. A first group of the passages have inner surface apertures located substantially in a first common plane. A second group of the passages have inner surface apertures located substantially in at least a second common plane substantially parallel to the first common plane. The second group has more passages than the first group.

  16. Fuel injector nozzle for an internal combustion engine

    DOE Patents [OSTI]

    Cavanagh, Mark S.; Urven, Jr., Roger L.; Lawrence, Keith E.

    2007-11-06

    A direct injection fuel injector includes a nozzle tip having a plurality of passages allowing fluid communication between an inner nozzle tip surface portion and an outer nozzle tip surface portion and directly into a combustion chamber of an internal combustion engine. A first group of the passages have inner surface apertures located substantially in a first common plane. A second group of the passages have inner surface apertures located substantially in at least a second common plane substantially parallel to the first common plane. The second group has more passages than the first group.

  17. Fuel injector nozzle for an internal combustion engine

    DOE Patents [OSTI]

    Cavanagh, Mark S.; Urven, Jr., Roger L.; Lawrence, Keith E.

    2011-03-22

    A direct injection fuel injector includes a nozzle tip having a plurality of passages allowing fluid communication between an inner nozzle tip surface portion and an outer nozzle tip surface portion and directly into a combustion chamber of an internal combustion engine. A first group of the passages have inner surface apertures located substantially in a first common plane. A second group of the passages have inner surface apertures located substantially in at least a second common plane substantially parallel to the first common plane. The second group has more passages than the first group.

  18. Fuel Injector Nozzle For An Internal Combustion Engine

    DOE Patents [OSTI]

    Cavanagh, Mark S.; Urven, Jr.; Roger L.; Lawrence, Keith E.

    2006-04-25

    A direct injection fuel injector includes a nozzle tip having a plurality of passages allowing fluid communication between an inner nozzle tip surface portion and an outer nozzle tip surface portion and directly into a combustion chamber of an internal combustion engine. A first group of the passages have inner surface apertures located substantially in a first common plane. A second group of the passages have inner surface apertures located substantially in at least a second common plane substantially parallel to the first common plane. The second group has more passages than the first group.

  19. Pneumatic starter for internal combustion engine

    SciTech Connect (OSTI)

    Kristof, J.J.; Elwer, M.

    1989-07-11

    A starter arrangement for an engine is described which consists of: a fluid actuated rotary vane motor which is adapted to engage an associated engine, the rotary motor having a hub and at least one blade which is slidably mounted in the hub and is made from a fiber reinforced plastic material to reduce friction, and wherein at least one blade has a wear surface made of the same material; a housing including a sleeve in which the rotary motor is positioned, the sleeve having on its inner surface a hard metallic coating to reduce friction, wherein the sleeve inner surface coating comprises a chromium electrocuting having a hardness which measures at least 70 on the Rockwell C hardness scale and a microfinish of less than 10 micro-inches R.M.S.; and, a relay valve means for selectively providing a pressurized operating fluid to the rotary motor, wherein the blade material and the sleeve inner surface coating cooperate to enable the motor to rotate in the sleeve with a minimum of friction thereby obviating the need for a lubricating system for the starter arrangement.

  20. Apparatus for photocatalytic destruction of internal combustion engine emissions during cold start

    DOE Patents [OSTI]

    Janata, Jiri; McVay, Gary L.; Peden, Charles H.; Exarhos, Gregory J.

    1998-01-01

    A method and apparatus for the destruction of emissions from an internal combustion engine wherein a substrate coated with TiO.sub.2 is exposed to a light source in the exhaust system of an internal combustion engine thereby catalyzing oxidation/reduction reactions between gaseous hydrocarbons, carbon monoxide, nitrogen oxides and oxygen in the exhaust of the internal combustion engine.

  1. Review of internal combustion engine combustion chamber process studies at NASA Lewis Research Center

    SciTech Connect (OSTI)

    Schock, H.J.

    1984-01-01

    The performance of internal combustion stratified-charge engines is highly dependent on the in-cylinder fuel-air mixing processes occurring in these engines. Current research concerning the in-cylinder airflow characteristics of rotary and piston engines is presented. Results showing the output of multidimensional models, laser velocimetry measurements and the application of a holographic optical element are described. Models which simulate the four-stroke cycle and seal dynamics of rotary engines are also discussed.

  2. Enhanced Efficiency of Internal Combustion Engines By Employing Spinning Gas

    SciTech Connect (OSTI)

    Geyko, Vasily; Fisch, Nathaniel

    2014-02-27

    The efficiency of the internal combustion engine might be enhanced by employing spinning gas. A gas spinning at near sonic velocities has an effectively higher heat capacity, which allows practical fuel cycles, which are far from the Carnot efficiency, to approach more closely the Carnot efficiency. A gain in fuel efficiency of several percent is shown to be theoretically possible for the Otto and Diesel cycles. The use of a flywheel, in principle, could produce even greater increases in the efficiency.

  3. Adjustable ratio roller rocker for internal combustion engines

    SciTech Connect (OSTI)

    Sheehan, K.A.

    1987-04-07

    This patent describes an adjustable ratio roller rocker for internal combustion engines, comprising: a body; a sliding pushrod seat received in the body; a bolt received in the sliding pushrod seat; a pushrod received in the sliding pushrod seat and the sliding pushrod seat includes a threaded opening that receives the bolt; and the rotation of the bolt causes the sliding pushrod seat to traverse a recessed opening in the body.

  4. The Role of the Internal Combustion Engine in our Energy Future |

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

    Department of Energy the Internal Combustion Engine in our Energy Future The Role of the Internal Combustion Engine in our Energy Future Reviews heavy-duty vehicle market, alternatives to internal combustion engines, and pathways to increasing diesel engine efficiency deer11_greszler.pdf (1.6 MB) More Documents & Publications High Fuel Economy Heavy-Duty Truck Engine View from the Bridge: Commercial Vehicle Perspective Diesel Engine Alternatives

  5. Method and device for diagnosing and controlling combustion instabilities in internal combustion engines operating in or transitioning to homogeneous charge combustion ignition mode

    DOE Patents [OSTI]

    Wagner, Robert M [Knoxville, TN; Daw, Charles S [Knoxville, TN; Green, Johney B [Knoxville, TN; Edwards, Kevin D [Knoxville, TN

    2008-10-07

    This invention is a method of achieving stable, optimal mixtures of HCCI and SI in practical gasoline internal combustion engines comprising the steps of: characterizing the combustion process based on combustion process measurements, determining the ratio of conventional and HCCI combustion, determining the trajectory (sequence) of states for consecutive combustion processes, and determining subsequent combustion process modifications using said information to steer the engine combustion toward desired behavior.

  6. Partially-Premixed Flames in Internal Combustion Engines

    SciTech Connect (OSTI)

    Robert W. Pitz; Michael C. Drake; Todd D. Fansler; Volker Sick

    2003-11-05

    This was a joint university-industry research program funded by the Partnerships for the Academic-Industrial Research Program (PAIR). The research examined partially premixed flames in laboratory and internal combustion engine environments at Vanderbilt University, University of Michigan, and General Motors Research and Development. At Vanderbilt University, stretched and curved ''tubular'' premixed flames were measured in a unique optically accessible burner with laser-induced spontaneous Raman scattering. Comparisons of optically measured temperature and species concentration profiles to detailed transport, complex chemistry simulations showed good correspondence at low-stretch conditions in the tubular flame. However, there were significant discrepancies at high-stretch conditions near flame extinction. The tubular flame predictions were found to be very sensitive to the specific hydrogen-air chemical kinetic mechanism and four different mechanisms were compared. In addition, the thermo-diffusive properties of the deficient reactant, H2, strongly affected the tubular flame structure. The poor prediction near extinction is most likely due to deficiencies in the chemical kinetic mechanisms near extinction. At the University of Michigan, an optical direct-injected engine was built up for laser-induced fluorescence imaging experiments on mixing and combustion under stratified charge combustion conditions with the assistance of General Motors. Laser attenuation effects were characterized both experimentally and numerically to improve laser imaging during the initial phase of the gasoline-air mixture development. Toluene was added to the isooctane fuel to image the fuel-air equivalence ratio in an optically accessible direct-injected gasoline engine. Temperature effects on the toluene imaging of fuel-air equivalence ratio were characterized. For the first time, oxygen imaging was accomplished in an internal combustion engine by combination of two fluorescence trackers

  7. Exhaust gas recirculation control system for an internal combustion engine

    SciTech Connect (OSTI)

    Nishida, M.; Inoue, N.

    1988-03-01

    An exhaust gas recirculation control system for an internal combustion engine is described which comprises; an exhaust gas recirculation control valve for controlling a recirculation rate for exhaust gas to be mixed with intake air which is supplied to the internal combustion engine, an oxygen sensor disposed in an intake air passage downstream of the control valve to detect the concentration of oxygen in the intake air, a control means which compares the oxygen concentration detected by the oxygen sensor with a desired oxygen concentration previously determined depending on operational conditions of the engine and controls the degree of opening of the exhaust gas recirculation control valve so as to cancel the deviation between the detected oxygen concentration and the desired oxygen concentration, a detecting means for detecting the exhaust gas recirculation rate being zero to supply a signal to the control means on the basis of the detection, and a correcting means for correcting the corresponding relation between the output of the oxygen sensor and the detected oxygen concentration on the basis of the output of the oxygen sensor when the exhaust gas recirculation rate is zero.

  8. Multiple fuel supply system for an internal combustion engine

    DOE Patents [OSTI]

    Crothers, William T.

    1977-01-01

    A multiple fuel supply or an internal combustion engine wherein phase separation of components is deliberately induced. The resulting separation permits the use of a single fuel tank to supply components of either or both phases to the engine. Specifically, phase separation of a gasoline/methanol blend is induced by the addition of a minor amount of water sufficient to guarantee separation into an upper gasoline phase and a lower methanol/water phase. A single fuel tank holds the two-phase liquid with separate fuel pickups and separate level indicators for each phase. Either gasoline or methanol, or both, can be supplied to the engine as required by predetermined parameters. A fuel supply system for a phase-separated multiple fuel supply contained in a single fuel tank is described.

  9. Spherical rotary valve assembly for an internal combustion engine

    SciTech Connect (OSTI)

    Coates, G.J.

    1991-02-05

    This patent describes an improved rotary intake valve for use in a rotary valved internal combustion engine. It comprises: a drum body of spherical section formed by two parallel planar side walls of a sphere disposed about a center thereof thereby defining a spherically-shaped end wall and formed with a shaft receiving aperture, the drum body formed with a circularly-shaped cavity in a side wall thereof and with a channel extending between the circularly-shaped cavity and an aperture formed in the spherically-shaped end wall.

  10. Compounded turbocharged rotary internal combustion engine fueled with natural gas

    SciTech Connect (OSTI)

    Jenkins, P.E.

    1992-10-15

    This patent describes a compounded engine. It comprises: a first Wankel engine having a housing with a trochoidal inner surface containing a generally triangular shaped rotor, the engine containing a fuel supply system suitable for operating the engine with natural gas as a fuel; a turbocharge compressing air for combustion by the engine, the turbocharger being driven by the exhaust gases which exit from the engine; a combustion chamber in fluid communication with the exhaust from the engine after that exhaust has passed through the turbocharger, the chamber having an ignition device suitable for igniting hydrocarbons in the engine exhaust, whereby the engine timing, and the air and fuel mixture of the engine are controlled so that when the engine exhaust reaches the combustion chamber the exhaust contains a sufficient amount of oxygen and hydrocarbons to enable ignition and combustion of the engine exhaust in the combustion chamber without the addition of fuel or air, and whereby the engine operating conditions are controlled to vary the performance of the secondary combustor; and a controllable ignition device to ignite the exhaust gases in the combustion chamber at predetermined times.

  11. Internal combustion engine for natural gas compressor operation

    DOE Patents [OSTI]

    Hagen, Christopher L.; Babbitt, Guy; Turner, Christopher; Echter, Nick; Weyer-Geigel, Kristina

    2016-04-19

    This application concerns systems and methods for compressing natural gas with an internal combustion engine. In a representative embodiment, a system for compressing a gas comprises a reciprocating internal combustion engine including at least one piston-cylinder assembly comprising a piston configured to travel in a cylinder and to compress gas in the cylinder in multiple compression stages. The system can further comprise a first pressure tank in fluid communication with the piston-cylinder assembly to receive compressed gas from the piston-cylinder assembly until the first pressure tank reaches a predetermined pressure, and a second pressure tank in fluid communication with the piston-cylinder assembly and the first pressure tank. The second pressure tank can be configured to receive compressed gas from the piston-cylinder assembly until the second pressure tank reaches a predetermined pressure. When the first and second pressure tanks have reached the predetermined pressures, the first pressure tank can be configured to supply gas to the piston-cylinder assembly, and the piston can be configured to compress the gas supplied by the first pressure tank such that the compressed gas flows into the second pressure tank.

  12. Plasmatron Fuel Reformer Development and Internal Combustion...

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

    Plasmatron Fuel Reformer Development and Internal Combustion Engine Vehicle Applications Plasmatron Fuel Reformer Development and Internal Combustion Engine Vehicle Applications ...

  13. Rotational position detecting device for internal combustion engine

    SciTech Connect (OSTI)

    Ushida, M.; Nakamura, Y.; Abe, K.

    1986-11-04

    This patent describes a device for detecting the rotational position of an internal combustion engine of the type that has a cam shaft extending outwardly from the engine through a wall of the engine block and a rotary member fixed to the cam shaft and driven therewith by a crankshaft of the engine. The device comprises: reference position information means and angular position information means both fixed to the end face of the driven rotary member remote from the wall of the engine block. In this way, the reference position and angular position information means are both moved among circular paths when the rotary member is rotated. The reference position and angular position information means are disposed at different radial distances from the axis of the driven rotary member; a reference position sensor and an angular position sensor respectively disposed to face the circular paths of the reference position and angular position information means; a housing fixed to the engine block to cover the driven rotary member and support the sensors; the housing having an end wall formed therein with an opening coaxial with the cam shaft; the cam shaft having an outer end portion extending outwardly beyond the driven rotary member into and through the opening; and a bearing mounted in the opening to rotatably receive the outer end portion of the cam shaft and position the housing with respect to the cam shaft.

  14. Exhaust gas recirculation system for an internal combustion engine

    SciTech Connect (OSTI)

    Wu, Ko-Jen

    2013-05-21

    An exhaust gas recirculation system for an internal combustion engine comprises an exhaust driven turbocharger having a low pressure turbine outlet in fluid communication with an exhaust gas conduit. The turbocharger also includes a low pressure compressor intake and a high pressure compressor outlet in communication with an intake air conduit. An exhaust gas recirculation conduit fluidly communicates with the exhaust gas conduit to divert a portion of exhaust gas to a low pressure exhaust gas recirculation branch extending between the exhaust gas recirculation conduit and an engine intake system for delivery of exhaust gas thereto. A high pressure exhaust gas recirculation branch extends between the exhaust gas recirculation conduit and the compressor intake and delivers exhaust gas to the compressor for mixing with a compressed intake charge for delivery to the intake system.

  15. Chapter 8: Advancing Clean Transportation and Vehicle Systems and Technologies | Internal Combustion Engines

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

    Internal Combustion Engines Chapter 8: Technology Assessments Introduction to the Technology/System Overview of Internal Combustion Engines and Potential Role Internal Combustion Engines (ICEs) already offer outstanding drivability and reliability to over 240 million on-road passenger vehicles in the U.S. Over 16 million ICE-powered new passenger and commercial vehicles are sold annually, some replacing older vehicles and the remainder adding to the vehicle population. Currently, on-road

  16. Apparatus for photocatalytic destruction of internal combustion engine emissions during cold start

    DOE Patents [OSTI]

    Janata, J.; McVay, G.L.; Peden, C.H.; Exarhos, G.J.

    1998-07-14

    A method and apparatus are disclosed for the destruction of emissions from an internal combustion engine wherein a substrate coated with TiO{sub 2} is exposed to a light source in the exhaust system of an internal combustion engine thereby catalyzing oxidation/reduction reactions between gaseous hydrocarbons, carbon monoxide, nitrogen oxides and oxygen in the exhaust of the internal combustion engine. 4 figs.

  17. Development of High Efficiency Clean Combustion Engine Designs for Spark-Ignition and Compression-Ignition Internal Combustion Engines

    SciTech Connect (OSTI)

    Marriott, Craig; Gonzalez, Manual; Russell, Durrett

    2011-06-30

    This report summarizes activities related to the revised STATEMENT OF PROJECT OBJECTIVES (SOPO) dated June 2010 for the Development of High-Efficiency Clean Combustion engine Designs for Spark-Ignition and Compression-Ignition Internal Combustion Engines (COOPERATIVE AGREEMENT NUMBER DE-FC26-05NT42415) project. In both the spark- (SI) and compression-ignition (CI) development activities covered in this program, the goal was to develop potential production-viable internal combustion engine system technologies that both reduce fuel consumption and simultaneously met exhaust emission targets. To be production-viable, engine technologies were also evaluated to determine if they would meet customer expectations of refinement in terms of noise, vibration, performance, driveability, etc. in addition to having an attractive business case and value. Prior to this activity, only proprietary theoretical / laboratory knowledge existed on the combustion technologies explored The research reported here expands and develops this knowledge to determine series-production viability. Significant SI and CI engine development occurred during this program within General Motors, LLC over more than five years. In the SI program, several engines were designed and developed that used both a relatively simple multi-lift valve train system and a Fully Flexible Valve Actuation (FFVA) system to enable a Homogeneous Charge Compression Ignition (HCCI) combustion process. Many technical challenges, which were unknown at the start of this program, were identified and systematically resolved through analysis, test and development. This report documents the challenges and solutions for each SOPO deliverable. As a result of the project activities, the production viability of the developed clean combustion technologies has been determined. At this time, HCCI combustion for SI engines is not considered production-viable for several reasons. HCCI combustion is excessively sensitive to control variables

  18. Towards a detailed soot model for internal combustion engines

    SciTech Connect (OSTI)

    Mosbach, Sebastian; Celnik, Matthew S.; Raj, Abhijeet; Kraft, Markus; Zhang, Hongzhi R.; Kubo, Shuichi; Kim, Kyoung-Oh

    2009-06-15

    In this work, we present a detailed model for the formation of soot in internal combustion engines describing not only bulk quantities such as soot mass, number density, volume fraction, and surface area but also the morphology and chemical composition of soot aggregates. The new model is based on the Stochastic Reactor Model (SRM) engine code, which uses detailed chemistry and takes into account convective heat transfer and turbulent mixing, and the soot formation is accounted for by SWEEP, a population balance solver based on a Monte Carlo method. In order to couple the gas-phase to the particulate phase, a detailed chemical kinetic mechanism describing the combustion of Primary Reference Fuels (PRFs) is extended to include small Polycyclic Aromatic Hydrocarbons (PAHs) such as pyrene, which function as soot precursor species for particle inception in the soot model. Apart from providing averaged quantities as functions of crank angle like soot mass, volume fraction, aggregate diameter, and the number of primary particles per aggregate for example, the integrated model also gives detailed information such as aggregate and primary particle size distribution functions. In addition, specifics about aggregate structure and composition, including C/H ratio and PAH ring count distributions, and images similar to those produced with Transmission Electron Microscopes (TEMs), can be obtained. The new model is applied to simulate an n-heptane fuelled Homogeneous Charge Compression Ignition (HCCI) engine which is operated at an equivalence ratio of 1.93. In-cylinder pressure and heat release predictions show satisfactory agreement with measurements. Furthermore, simulated aggregate size distributions as well as their time evolution are found to qualitatively agree with those obtained experimentally through snatch sampling. It is also observed both in the experiment as well as in the simulation that aggregates in the trapped residual gases play a vital role in the soot

  19. Emission control system and method for internal combustion engine

    SciTech Connect (OSTI)

    Owens, L.

    1980-06-03

    Fresh air is introduced into the exhaust pipe leading to the muffler for an internal combustion engine, while the air and exhaust gas mixture is cooled, not only in the muffler but also in a circuitous tube which extends from the muffler to the normal discharge or tail pipe and in which a special cooler may be installed. From the outlet of the special cooling tube, which faces forwardly, a portion of the air and exhaust gas mixture, now cooled, is led from a Y-connection to the intake tube of the air filter, so that the air and exhaust gas mixture will be introduced into the intake system prior to the carburetor. A rearwardly slanting arm of the Y-connection connects the front end of the special cooling pipe with the normal tail pipe. The carburetor has one or more air bleed tubes leading into the mixture passage at or below the butterfly valves, so that at idling speeds, a small amount of fresh air is introduced, irrespective of the position of the butterfly valves, to overcome any tendency for the engine, when idling, to cough or sputter due to the introduction of an air and exhaust gas mixture to the air filter intake.

  20. Coal-water slurry fuel internal combustion engine and method for operating same

    DOE Patents [OSTI]

    McMillian, Michael H.

    1992-01-01

    An internal combustion engine fueled with a coal-water slurry is described. About 90 percent of the coal-water slurry charge utilized in the power cycle of the engine is directly injected into the main combustion chamber where it is ignited by a hot stream of combustion gases discharged from a pilot combustion chamber of a size less than about 10 percent of the total clearance volume of main combustion chamber with the piston at top dead center. The stream of hot combustion gases is provided by injecting less than about 10 percent of the total coal-water slurry charge into the pilot combustion chamber and using a portion of the air from the main combustion chamber that has been heated by the walls defining the pilot combustion chamber as the ignition source for the coal-water slurry injected into the pilot combustion chamber.

  1. Dynamic estimator for determining operating conditions in an internal combustion engine

    DOE Patents [OSTI]

    Hellstrom, Erik; Stefanopoulou, Anna; Jiang, Li; Larimore, Jacob

    2016-01-05

    Methods and systems are provided for estimating engine performance information for a combustion cycle of an internal combustion engine. Estimated performance information for a previous combustion cycle is retrieved from memory. The estimated performance information includes an estimated value of at least one engine performance variable. Actuator settings applied to engine actuators are also received. The performance information for the current combustion cycle is then estimated based, at least in part, on the estimated performance information for the previous combustion cycle and the actuator settings applied during the previous combustion cycle. The estimated performance information for the current combustion cycle is then stored to the memory to be used in estimating performance information for a subsequent combustion cycle.

  2. Nitrogen enriched combustion of a natural gas internal combustion engine to reduce NO.sub.x emissions

    DOE Patents [OSTI]

    Biruduganti, Munidhar S.; Gupta, Sreenath Borra; Sekar, R. Raj; McConnell, Steven S.

    2008-11-25

    A method and system for reducing nitrous oxide emissions from an internal combustion engine. An input gas stream of natural gas includes a nitrogen gas enrichment which reduces nitrous oxide emissions. In addition ignition timing for gas combustion is advanced to improve FCE while maintaining lower nitrous oxide emissions.

  3. Stratified charge combustion system and method for gaseous fuel internal combustion engines

    SciTech Connect (OSTI)

    Rhoades, W.A. Jr.

    1986-03-11

    This patent describes a stratified charge combustion system for use in a gaseous fuel internal combustion engine. This system consists of: (a) a combustion chamber; (b) an ignition; (c) a gaseous fuel injection valve assembly in communication with the combustion chamber and in spaced relationship from the ignition source with a portion of the inside surfaces extending between the fuel injection valve assembly and the ignition source. The fuel valve assembly defines an entry port for the entrance of gaseous fuel, the entry port is recessed outside of a fixed inside surface. (d) means for pressuring the gaseous fuel prior to injection; and (e) a curved transitional surface extending from the entry port toward the portion of the inside surfaces extending between the fuel injection valve assembly and the ignition source. The curved transitional surface curves away from the direction of the entry port. The curved transitional surface has a curvature for the particular direction and configuration of the entry port. The particular configuration of the portion of the inside surfaces extends between the injection valve assembly and the ignition source. The particular arrangment of the fuel injection valve assembly in the combustion chamber, and for the particular pressure of the gaseous fuel is to produce the Coanda Effect in the injected gaseous fuel flow after it passes through the entry port and follows the curved transitional surface under the Coanda Effect. As the curved transitional surface curves away from the direction of the entry port, a flow is produced of the gaseous fuel that clings to and follows the particular configuration of the inside surfaces to the ignition source.

  4. Turbocharged two-stroke internal combustion engine with four-stroke capability

    SciTech Connect (OSTI)

    Burrahm, R.W.

    1990-03-13

    This patent describes, in a turbocharged two-stroke internal combustion engine without crankcase scavenging and having means for operating the exhaust valves in accordance with either two-stroke or four-stroke operation, a means for enabling the intake of combustible gas into cylinders of the engine during four-stroke operation through a port in each cylinder from a combustible gas source. It comprises: a valve mounted on each port responsive to pressure within the cylinder.

  5. Soot filter in the exhaust gas flow of air-compressing internal combustion engines

    SciTech Connect (OSTI)

    Abthoff, J.; Gabler, R.; Schuster, H.

    1980-06-03

    A soot filter adapted to be arranged in an exhaust gas stream of air-compressing internal combustion engines is disclosed. The soot filter includes a cylindrical filter housing arranged in proximity of the exhaust gas stream of the internal combustion engine with inlet pipe connecting studs from outlet side of the internal combustion engine being connected to the cylindrical filter housing. A ceramic material of a hollow cylindrical shape is arranged in the filter housing at a distance from a circumferential wall of the filter housing. The ceramic material consists of an outer layer of loose ceramic fiber wadding and of inner woven ceramic fiber matting. A hollow space inside of the ceramic fiber material is connected, in an axial direction, with exhaust gas line of the internal combustion engine.

  6. Internal combustion engine cylinder-to-cylinder balancing with balanced air-fuel ratios

    DOE Patents [OSTI]

    Harris, Ralph E.; Bourn, Gary D.; Smalley, Anthony J.

    2006-01-03

    A method of balancing combustion among cylinders of an internal combustion engine. For each cylinder, a normalized peak firing pressure is calculated as the ratio of its peak firing pressure to its combustion pressure. Each cylinder's normalized peak firing pressure is compared to a target value for normalized peak firing pressure. The fuel flow is adjusted to any cylinder whose normalized peak firing pressure is not substantially equal to the target value.

  7. Mitigating the effect of siloxanes on internal combustion engines using landfill gasses

    DOE Patents [OSTI]

    Besmann, Theodore M

    2015-01-06

    A waste gas combustion method that includes providing a combustible fuel source, in which the combustible fuel source is composed of at least methane and siloxane gas. A sodium source or magnesium source is mixed with the combustible fuel source. Combustion of the siloxane gas of the combustible fuel source produces a silicon containing product. The sodium source or magnesium source reacts with the silicon containing product to provide a sodium containing glass or sodium containing silicate, or a magnesium containing silicate. By producing the sodium containing glass or sodium containing silicate, or the magnesium containing silicate, or magnesium source for precipitating particulate silica instead of hard coating, the method may reduce or eliminate the formation of silica deposits within the combustion chamber and the exhaust components of the internal combustion engine.

  8. Mitigating the effect of siloxanes on internal combustion engines using landfill gasses

    DOE Patents [OSTI]

    Besmann, Theodore M

    2014-01-21

    A waste gas combustion method that includes providing a combustible fuel source, in which the combustible fuel source is composed of at least methane and siloxane gas. A sodium source or magnesium source is mixed with the combustible fuel source. Combustion of the siloxane gas of the combustible fuel source produces a silicon containing product. The sodium source or magnesium source reacts with the silicon containing product to provide a sodium containing glass or sodium containing silicate, or a magnesium containing silicate. By producing the sodium containing glass or sodium containing silicate, or the magnesium containing silicate, or magnesium source for precipitating particulate silica instead of hard coating, the method may reduce or eliminate the formation of silica deposits within the combustion chamber and the exhaust components of the internal combustion engine.

  9. Engine Combustion

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

    Engine Combustion - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Energy Defense Waste Management Programs Advanced Nuclear

  10. Traveling-Wave Thermoacoustic Engines With Internal Combustion

    DOE Patents [OSTI]

    Weiland, Nathan Thomas; Zinn, Ben T.; Swift, Gregory William

    2004-05-11

    Thermoacoustic devices are disclosed wherein, for some embodiments, a combustion zone provides heat to a regenerator using a mean flow of compressible fluid. In other embodiments, burning of a combustible mixture within the combustion zone is pulsed in phase with the acoustic pressure oscillations to increase acoustic power output. In an example embodiment, the combustion zone and the regenerator are thermally insulated from other components within the thermoacoustic device.

  11. Method for operating a spark-ignition, direct-injection internal combustion engine

    DOE Patents [OSTI]

    Narayanaswamy, Kushal; Koch, Calvin K.; Najt, Paul M.; Szekely, Jr., Gerald A.; Toner, Joel G.

    2015-06-02

    A spark-ignition, direct-injection internal combustion engine is coupled to an exhaust aftertreatment system including a three-way catalytic converter upstream of an NH3-SCR catalyst. A method for operating the engine includes operating the engine in a fuel cutoff mode and coincidentally executing a second fuel injection control scheme upon detecting an engine load that permits operation in the fuel cutoff mode.

  12. Internal combustion engines: Computer applications. (Latest citations from the EI Compendex plus database). Published Search

    SciTech Connect (OSTI)

    Not Available

    1993-10-01

    The bibliography contains citations concerning the application of computers and computerized simulations in the design, analysis, operation, and evaluation of various types of internal combustion engines and associated components and apparatus. Special attention is given to engine control and performance. (Contains a minimum of 67 citations and includes a subject term index and title list.)

  13. Side branch absorber for exhaust manifold of two-stroke internal combustion engine

    DOE Patents [OSTI]

    Harris, Ralph E.; Broerman, III, Eugene L.; Bourn, Gary D.

    2011-01-11

    A method of improving scavenging operation of a two-stroke internal combustion engine. The exhaust pressure of the engine is analyzed to determine if there is a pulsation frequency. Acoustic modeling is used to design an absorber. An appropriately designed side branch absorber may be attached to the exhaust manifold.

  14. Soot filter for an exhaust arrangement of an internal combustion engine

    SciTech Connect (OSTI)

    Bergmann, H.; Daudel, H.; Erdmannsdorfer, H.

    1982-04-13

    A soot filter arrangement for an exhaust gas flow of an internal combustion engine, especially an air-compressing internal combustion engine. The filter arrangement includes a housing with feed and discharge connections for the exhaust gas stream in a mineral filter material arranged in the housing. The material is provided on a support pipe equipped with passage openings which enable the exhaust gas stream to enter the support pipe in a radial direction and leave the same in an axial direction. Several support pipes are provided at a mutual spacing in a parallel relationship and the filter material includes a thread of spun silicon dioxide fibers wound onto the support pipes.

  15. Fuel injection for internal combustion engines. (Latest citations from the NTIS bibliographic database). Published Search

    SciTech Connect (OSTI)

    1996-08-01

    The bibliography contains citations concerning research and development of fuel injection systems applied to internal combustion engines and turbines. Gasoline, diesel, synthetic fuels, and liquid gas systems are discussed relative to systems` variations and performances. Fuel injection atomization and combustion are considered in theory, and fuel injection relative to emission control is included.(Contains 50-250 citations and includes a subject term index and title list.) (Copyright NERAC, Inc. 1995)

  16. Fuel injection for internal combustion engines. (Latest citations from the NTIS Bibliographic database). Published Search

    SciTech Connect (OSTI)

    Not Available

    1993-09-01

    The bibliography contains citations concerning research and development of fuel injection systems applied to internal combustion engines and turbines. Gasoline, diesel, synthetic fuels, and liquid gas systems are discussed relative to systems' variations and performances. Fuel injection atomization and combustion are considered in theory, and fuel injection relative to emission control is included. (Contains a minimum of 223 citations and includes a subject term index and title list.)

  17. Internal combustion engine with rotary valve assembly having variable intake valve timing

    DOE Patents [OSTI]

    Hansen, Craig N.; Cross, Paul C.

    1995-01-01

    An internal combustion engine has rotary valves associated with movable shutters operable to vary the closing of intake air/fuel port sections to obtain peak volumetric efficiency over the entire range of speed of the engine. The shutters are moved automatically by a control mechanism that is responsive to the RPM of the engine. A foot-operated lever associated with the control mechanism is also used to move the shutters between their open and closed positions.

  18. Internal combustion engine with rotary valve assembly having variable intake valve timing

    SciTech Connect (OSTI)

    Hansen, C.N.; Cross, P.C.

    1995-12-12

    An internal combustion engine has rotary valves associated with movable shutters operable to vary the closing of intake air/fuel port sections to obtain peak volumetric efficiency over the entire range of speed of the engine. The shutters are moved automatically by a control mechanism that is responsive to the RPM of the engine. A foot-operated lever associated with the control mechanism is also used to move the shutters between their open and closed positions. 21 figs.

  19. Method and systems for power control of internal combustion engines using individual cycle cut-off

    SciTech Connect (OSTI)

    Fedorenko, Y.; Korzhov, M.; Filippov, A.; Atamanenko, N.

    1996-09-01

    A new method of controlling power has been developed for improving efficiency and emissions performance of internal combustion engines at partial load. The method involves cutting-off some of the work cycles, as the load decreases, to obtain required power. Theoretical and experimental material is presented to illustrate the underlying principle, the implementation means and the results for the 4- and 8-cylinder piston engine and a twin rotor Wankel engine applications.

  20. Catalytic combustion in internal combustion engines: A possible explanation for the Woschni effect in thermally-insulated diesel engines. Interim report

    SciTech Connect (OSTI)

    Jones, R.L.

    1996-11-15

    This report describes research undertaken to determine if catalytic combustion effects occur with the use of zirconia (ZrO{sub 2}) thermal barrier coatings (TBCs), or other coatings, in diesel engines, and if so, whether these effects have significant impact upon engine combustion, fuel economy, or pollutant emissions. A simple furnace system was used to identify catalytic combustion effects in the ignition and combustion of propane/air mixtures over catalyst-doped m-ZrO{sub 2} spheres. Three classes of catalysts were examined: zirconia-stabilizing oxides (CeO{sub 2}, Y{sub 2}O{sub 3}, MgO), transition metal oxides (Co{sub 3}O{sub 4}, Cr{sub 2}O{sub 3}, Fe{sub 2}O{sub 3}), and noble metals (Pt). Each class exhibited characteristic combustion effects, with the ignition temperature increasing, e.g., from approximately 2000 deg C for Pt to 5500 deg C for the stabilizing oxides. The results suggest that the Woschni effect, a controversial phenomenon wherein thermal-insulating measures are postulated to actually increase heat transfer from the diesel combustion chamber, may be only a manifestation of catalytic combustion. Previous research on catalytic combustion in internal combustion engines is briefly reviewed and discussed. An earlier version of this report is to be published in J. Surface and Coatings Technology as `Catalytic Combustion Effects on m-ZrO{sub 2} Doped with Various Metal Nitrates.`

  1. advanced combustion engines | netl.doe.gov

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

    Advanced Combustion Engines Improving the efficiency of internal combustion engines is one of the most promising and cost-effective near- to mid-term approaches to increasing...

  2. Internal combustion engine system having a power turbine with a broad efficiency range

    DOE Patents [OSTI]

    Whiting, Todd Mathew; Vuk, Carl Thomas

    2010-04-13

    An engine system incorporating an air breathing, reciprocating internal combustion engine having an inlet for air and an exhaust for products of combustion. A centripetal turbine receives products of the combustion and has a housing in which a turbine wheel is rotatable. The housing has first and second passages leading from the inlet to discrete, approximately 180.degree., portions of the circumference of the turbine wheel. The passages have fixed vanes adjacent the periphery of the turbine wheel and the angle of the vanes in one of the passages is different than those in the other so as to accommodate different power levels providing optimum approach angles between the gases passing the vanes and the blades of the turbine wheel. Flow through the passages is controlled by a flapper valve to direct it to one or the other or both passages depending upon the load factor for the engine.

  3. Internal combustion engine power. A quarter century in review...

    Office of Scientific and Technical Information (OSTI)

    Country of Publication: United States Language: English Subject: 33 ADVANCED PROPULSION SYSTEMS; DIESEL ENGINES; AIR POLLUTION ABATEMENT; COMPUTER-AIDED DESIGN; EFFICIENCY; GAS ...

  4. Apparatus and method for operating internal combustion engines from variable mixtures of gaseous fuels

    DOE Patents [OSTI]

    Heffel, James W.; Scott, Paul B.

    2003-09-02

    An apparatus and method for utilizing any arbitrary mixture ratio of multiple fuel gases having differing combustion characteristics, such as natural gas and hydrogen gas, within an internal combustion engine. The gaseous fuel composition ratio is first sensed, such as by thermal conductivity, infrared signature, sound propagation speed, or equivalent mixture differentiation mechanisms and combinations thereof which are utilized as input(s) to a "multiple map" engine control module which modulates selected operating parameters of the engine, such as fuel injection and ignition timing, in response to the proportions of fuel gases available so that the engine operates correctly and at high efficiency irrespective of the gas mixture ratio being utilized. As a result, an engine configured according to the teachings of the present invention may be fueled from at least two different fuel sources without admixing constraints.

  5. Apparatus and method for operating internal combustion engines from variable mixtures of gaseous fuels

    DOE Patents [OSTI]

    Heffel, James W.; Scott, Paul B.; Park, Chan Seung

    2011-11-01

    An apparatus and method for utilizing any arbitrary mixture ratio of multiple fuel gases having differing combustion characteristics, such as natural gas and hydrogen gas, within an internal combustion engine. The gaseous fuel composition ratio is first sensed, such as by thermal conductivity, infrared signature, sound propagation speed, or equivalent mixture differentiation mechanisms and combinations thereof which are utilized as input(s) to a "multiple map" engine control module which modulates selected operating parameters of the engine, such as fuel injection and ignition timing, in response to the proportions of fuel gases available so that the engine operates correctly and at high efficiency irrespective of the gas mixture ratio being utilized. As a result, an engine configured according to the teachings of the present invention may be fueled from at least two different fuel sources without admixing constraints.

  6. System for lubrication of a brake air compressor associated with a turbocharged internal combustion engine

    SciTech Connect (OSTI)

    Spencer, J.C.

    1992-10-13

    This patent describes a system for use with a vehicle which includes a turbocharged internal combustion engine having a lubricating system wherein lubricating oil from an engine oil reservoir is circulated within the engine and also to and from an associated brake system air compressor which supplies compressed air for operation of the vehicle air braking system. This patent describes improvement in passing supercharged air to an oil crankcase of the air compressor to cause lubricating oil to drain therefrom and return to the engine oil reservoir.

  7. Throttle valve control device for internal combustion engines

    SciTech Connect (OSTI)

    Ejiri, Y.; Ito, T.

    1988-05-31

    In a throttle valve control device for controlling a position of an engine throttle valve secured to a rotary shaft, which includes a control unit operative to produce a first electrical signal in accordance with a movement of an engine accelerator and an electro-mechanical force transducer operative to impart a first rotational torque to the rotary shaft and thereby to the throttle valve, the first rotational torque corresponding to the first electrical signal, the improvement is described comprising: a throttle valve returning means operative to produce a second rotational torque for biasing the throttle valve to a fully closed position irrespective of the movement of the engine accelerator and means responsive to the second electrical signal to transmit the second rotational torque to the rotary shaft irrespective of the movement of the engine accelerator.

  8. Internal combustion engines for alcohol motor fuels: a compilation of background technical information

    SciTech Connect (OSTI)

    Blaser, Richard

    1980-11-01

    This compilation, a draft training manual containing technical background information on internal combustion engines and alcohol motor fuel technologies, is presented in 3 parts. The first is a compilation of facts from the state of the art on internal combustion engine fuels and their characteristics and requisites and provides an overview of fuel sources, fuels technology and future projections for availability and alternatives. Part two compiles facts about alcohol chemistry, alcohol identification, production, and use, examines ethanol as spirit and as fuel, and provides an overview of modern evaluation of alcohols as motor fuels and of the characteristics of alcohol fuels. The final section compiles cross references on the handling and combustion of fuels for I.C. engines, presents basic evaluations of events leading to the use of alcohols as motor fuels, reviews current applications of alcohols as motor fuels, describes the formulation of alcohol fuels for engines and engine and fuel handling hardware modifications for using alcohol fuels, and introduces the multifuel engines concept. (LCL)

  9. System and method for conditioning intake air to an internal combustion engine

    SciTech Connect (OSTI)

    Sellnau, Mark C.

    2015-08-04

    A system for conditioning the intake air to an internal combustion engine includes a means to boost the pressure of the intake air to the engine and a liquid cooled charge air cooler disposed between the output of the boost means and the charge air intake of the engine. Valves in the coolant system can be actuated so as to define a first configuration in which engine cooling is performed by coolant circulating in a first coolant loop at one temperature, and charge air cooling is performed by coolant flowing in a second coolant loop at a lower temperature. The valves can be actuated so as to define a second configuration in which coolant that has flowed through the engine can be routed through the charge air cooler. The temperature of intake air to the engine can be controlled over a wide range of engine operation.

  10. Method for reducing peak phase current and decreasing staring time for an internal combustion engine having an induction machine

    DOE Patents [OSTI]

    Amey, David L.; Degner, Michael W.

    2002-01-01

    A method for reducing the starting time and reducing the peak phase currents for an internal combustion engine that is started using an induction machine starter/alternator. The starting time is reduced by pre-fluxing the induction machine and the peak phase currents are reduced by reducing the flux current command after a predetermined period of time has elapsed and concurrent to the application of the torque current command. The method of the present invention also provides a strategy for anticipating the start command for an internal combustion engine and determines a start strategy based on the start command and the operating state of the internal combustion engine.

  11. Rotary internal combustion engine and method of operation

    SciTech Connect (OSTI)

    Ballinger, M.S.

    1988-05-03

    A rotor is formed to include recesses each of which engages a portion of a rotary piston. The remaining portions of the rotary pistons project radially outwardly from the periphery of the rotor to a position contiguous the inner surface of a peripheral stator wall. The peripheral stator wall includes endwardly projecting lobes. The lobes are elongated axially of the engine and present convex surfaces of circular curvature which conform in size and shape to concave pockets formed in side portion of the rotary pistons. During rotation of the rotary assembly the piston pockets move into and then out from a meshing engagement with the lobes. One of the lobes carries an igniter. An explosive lean mixture is drawn into the side pocket of a piston as the piston moves past an inlet opening. This mixture is compressed by the engagement of the piston pocket and the lobe. Ignition of the compressed charged creates an explosive force acting on the rotor assembly, causing it to rotate.

  12. "Optimization of efficiency of internal combustion engines via using

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

    spinning gas and non-spectroscopic method of determining gas constituents through rotation ..--.. Inventors Nathaniel Fisch, Vasily Geyko | Princeton Plasma Physics Lab Optimization of efficiency of internal combustion engines via using spinning gas and non-spectroscopic method of determining gas constituents through rotation ..--.. Inventors Nathaniel Fisch, Vasily Geyko An important use of the disclosed approach is the improvement efficiency of thermal cycles and as result efficiency of

  13. A Study of the Theoretical Potential of Thermochemical Exhaust Heat Recuperation in Internal Combustion Engines

    SciTech Connect (OSTI)

    Daw, C Stuart; Pihl, Josh A; Chakravarthy, Veerathu K; Conklin, Jim

    2010-01-01

    A detailed thermodynamic analysis of thermochemical recuperation (TCR) applied to an idealized internal combustion engine with single-stage work extraction is presented. Results for several different fuels are included. For a stoichiometric mixture of methanol and air, TCR can increase the estimated ideal engine second law efficiency by about 3% for constant pressure reforming and over 5% for constant volume reforming. For ethanol and isooctane, the estimated second law efficiency increases for constant volume reforming are 9 and 11%, respectively. The second law efficiency improvements from TCR result primarily from the higher intrinsic exergy of the reformed fuel and pressure boost associated with the gas mole increase. Reduced combustion irreversibility may also yield benefits for future implementations of combined cycle work extraction.

  14. A Study of the Theoretical Potential of Thermochemical Exhaust Heat Recuperation for Internal Combustion Engines

    SciTech Connect (OSTI)

    Chakravarthy, Veerathu K; Daw, C Stuart; Pihl, Josh A; Conklin, Jim

    2010-01-01

    We present a detailed thermodynamic analysis of thermochemical recuperation (TCR) applied to an idealized internal combustion engine with single-stage work extraction. Results for several different fuels are included. For a stoichiometric mixture of methanol and air, TCR can increase the estimated ideal engine Second Law efficiency by about 3% for constant pressure reforming and over 5% for constant volume reforming. For ethanol and isooctane the estimated Second Law efficiency increases for constant volume reforming are 9% and 11%, respectively. The Second Law efficiency improvements from TCR result primarily from the higher intrinsic exergy of the reformed fuel and pressure boost associated with gas mole increase. Reduced combustion irreversibility may also yield benefits for future implementations of combined cycle work extraction.

  15. Modeling of reciprocating internal combustion engines for power generation and heat recovery

    SciTech Connect (OSTI)

    Yun, Kyung Tae; Cho, Heejin; Luck, Rogelio; Mago, Pedro J.

    2013-02-01

    This paper presents a power generation and heat recovery model for reciprocating internal combustion engines (ICEs). The purpose of the proposed model is to provide realistic estimates of performance/efficiency maps for both electrical power output and useful thermal output for various capacities of engines for use in a preliminary CHP design/simulation process. The proposed model will serve as an alternative to constant engine efficiencies or empirical efficiency curves commonly used in the current literature for simulations of CHP systems. The engine performance/efficiency calculation algorithm has been coded to a publicly distributed FORTRAN Dynamic Link Library (DLL), and a user friendly tool has been developed using Visual Basic programming. Simulation results using the proposed model are validated against manufacturer’s technical data.

  16. Exhaust pipe arrangement for a turbocharged multi-cylinder internal combustion engine having catalytic converters

    SciTech Connect (OSTI)

    Gauffres, U.J.

    1984-04-24

    An exhaust pipe arrangement for internal combustion engines is disclosed which includes an exhaust gas turbocharger, a bypass conduit for circumventing the turbocharger, a blow off valve, a starter catalyst disposed in an exhaust pipe, an oxygen sensor, and a main catalyst connected downstream of the turbocharger, starter catalyst, and oxygen sensor. To reduce the exhaust gas counterpressure and relieve the load on the starter catalyst at the same time, the starter catalyst is arranged upstream of a junction of the bypass conduit entering into the exhaust pipe.

  17. Identification of Potential Efficiency Opportunities in Internal Combustion Engines Using a Detailed Thermodynamic Analysis of Engine Simulation Results

    SciTech Connect (OSTI)

    Edwards, Kevin Dean; Wagner, Robert M; Graves, Ronald L

    2008-01-01

    Current political and environmental concerns are driving renewed efforts to develop techniques for improving the efficiency of internal combustion engines. A detailed thermodynamic analysis of an engine and its components from a 1st and 2nd law perspective is necessary to characterize system losses and to identify efficiency opportunities. We have developed a method for performing this analysis using engine-simulation results obtained from WAVE , a commercial engine-modeling software package available from Ricardo, Inc. Results from the engine simulation are post-processed to compute thermodynamic properties such as internal energy, enthalpy, entropy, and availability (or exergy), which are required to perform energy and availability balances of the system. This analysis is performed for all major components (turbocharger, intercooler, EGR cooler, etc.) of the engine as a function of crank angle degree for the entire engine cycle. With this information, we are able to identify potential efficiency opportunities as well as guide engine experiments for exploring new technologies for recovering system losses.

  18. Solutions for VOC and HAPS control on natural gas fired internal combustion engines

    SciTech Connect (OSTI)

    Marcus, J.Z.; Sleigh, S.; Cotherman, R.

    1996-12-31

    Natural gas fired stationary internal combustion engines (IC engines) emit volatile organic compounds (VOC) and hazardous air pollutants (HAP) as part of their normal operations. VOC and HAP emissions are coming under increased scrutiny with the advent of such Clean Air Act Amendments of 1990 regulations as Title I`s Reasonably Available Control Technology (RACT), Title III`s Maximum Achievable Control Technology (MACT) and Title V`s Operating Permit Program (Title V). In addition, many states are imposing more stringent emission limits on these sources. These emissions may also contribute to the reportable chemicals from the total facility under SARA Title III. Numerous facilities nationwide are interested in reducing these emissions in order to comply with current requirements, to opt out of requirements or to reduce reportable chemicals. This paper will examine the source of these emissions, and discuss combustion control technologies and system operating flexibility, end-of-pipe control technologies, and system tuning opportunities which have the potential to reduce VOC and HAP emissions from IC engines. Data will be presented on potential emission reduction efficiencies achievable using the various control options. 7 refs., 4 tabs.

  19. Application of high performance computing for studying cyclic variability in dilute internal combustion engines

    SciTech Connect (OSTI)

    FINNEY, Charles E A; Edwards, Kevin Dean; Stoyanov, Miroslav K; Wagner, Robert M

    2015-01-01

    Combustion instabilities in dilute internal combustion engines are manifest in cyclic variability (CV) in engine performance measures such as integrated heat release or shaft work. Understanding the factors leading to CV is important in model-based control, especially with high dilution where experimental studies have demonstrated that deterministic effects can become more prominent. Observation of enough consecutive engine cycles for significant statistical analysis is standard in experimental studies but is largely wanting in numerical simulations because of the computational time required to compute hundreds or thousands of consecutive cycles. We have proposed and begun implementation of an alternative approach to allow rapid simulation of long series of engine dynamics based on a low-dimensional mapping of ensembles of single-cycle simulations which map input parameters to output engine performance. This paper details the use Titan at the Oak Ridge Leadership Computing Facility to investigate CV in a gasoline direct-injected spark-ignited engine with a moderately high rate of dilution achieved through external exhaust gas recirculation. The CONVERGE CFD software was used to perform single-cycle simulations with imposed variations of operating parameters and boundary conditions selected according to a sparse grid sampling of the parameter space. Using an uncertainty quantification technique, the sampling scheme is chosen similar to a design of experiments grid but uses functions designed to minimize the number of samples required to achieve a desired degree of accuracy. The simulations map input parameters to output metrics of engine performance for a single cycle, and by mapping over a large parameter space, results can be interpolated from within that space. This interpolation scheme forms the basis for a low-dimensional metamodel which can be used to mimic the dynamical behavior of corresponding high-dimensional simulations. Simulations of high-EGR spark

  20. Rotary-reciprocal combustion engines

    SciTech Connect (OSTI)

    Blount, D.H.

    1992-10-06

    This patent describes an internal combustion engine of the rotary-reciprocal type. It comprises a housing formed with a peripheral wall; a rotor; and a shaft for the rotor.

  1. Invited Review: A review of deterministic effects in cyclic variability of internal combustion engines

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

    Finney, Charles E.; Kaul, Brian C.; Daw, C. Stuart; Wagner, Robert M.; Edwards, K. Dean; Green, Johney B.

    2015-02-18

    Here we review developments in the understanding of cycle to cycle variability in internal combustion engines, with a focus on spark-ignited and premixed combustion conditions. Much of the research on cyclic variability has focused on stochastic aspects, that is, features that can be modeled as inherently random with no short term predictability. In some cases, models of this type appear to work very well at describing experimental observations, but the lack of predictability limits control options. Also, even when the statistical properties of the stochastic variations are known, it can be very difficult to discern their underlying physical causes andmore » thus mitigate them. Some recent studies have demonstrated that under some conditions, cyclic combustion variations can have a relatively high degree of low dimensional deterministic structure, which implies some degree of predictability and potential for real time control. These deterministic effects are typically more pronounced near critical stability limits (e.g. near tipping points associated with ignition or flame propagation) such during highly dilute fueling or near the onset of homogeneous charge compression ignition. We review recent progress in experimental and analytical characterization of cyclic variability where low dimensional, deterministic effects have been observed. We describe some theories about the sources of these dynamical features and discuss prospects for interactive control and improved engine designs. In conclusion, taken as a whole, the research summarized here implies that the deterministic component of cyclic variability will become a pivotal issue (and potential opportunity) as engine manufacturers strive to meet aggressive emissions and fuel economy regulations in the coming decades.« less

  2. An Analysis of the Impact of Selected Fuel Thermochemical Properties on Internal Combustion Engine Efficiency

    SciTech Connect (OSTI)

    Szybist, James P; Chakravathy, Kalyana; Daw, C Stuart

    2012-01-01

    In this study we model the effects of 23 different fuels on First and Second Law thermodynamic efficiency of an adiabatic internal combustion engine. First Law efficiency is calculated using lower heating value (LHV) while Second Law efficiency is calculated with exergy, which represents the inherent chemical energy available to produce propulsion. We find that First Law efficiency can deviate by as much as nine percentage points between fuels while Second Law efficiency exhibits a much smaller degree of variability. We also find that First and Second Law efficiency can be nearly the same for some fuels (methane and ethane) but differ substantially for other fuels (hydrogen and ethanol). The differences in First and Second Law efficiency are due to differences in LHV and exergy for a given fuel. In order to explain First Law efficiency differences between fuels as well as the differences between LHV and exergy, we introduce a new term: the molar expansion ratio (MER), defined as the ratio of product moles to reactant moles for complete stoichiometric combustion. We find that the MER is a useful expression for providing a physical explanation for fuel-specific efficiency differences as well as differences between First and Second Law efficiency. First and Second Law efficiency are affected by a number of other fuel-specific thermochemical properties, such as the ratio of specific heat and dissociation of combustion products.

  3. E-Alerts: Combustion, engines, and propellants (reciprocation and rotating combustion engines). E-mail newsletter

    SciTech Connect (OSTI)

    1999-04-01

    Design, performance, and testing of reciprocating and rotating engines of various configurations for all types of propulsion. Includes internal and external combustion engines; engine exhaust systems; engine air systems components; engine structures; stirling and diesel engines.

  4. Control device for controlling a recycling of exhaust gas of an internal combustion engine

    SciTech Connect (OSTI)

    Bergmann, H.; Reddemann, J.

    1982-10-12

    A control device for controlling a recycling of exhaust gases into an intake system of a self-igniting internal combustion engine which includes a signal generator, constructed as a pneumatic control slide valve mounted to a fuel injection pump. The signal generator is controlled by the respective instantaneous load conditions as a function of the rotational speed of the engine and the load on the engine by a non-reactive scanning of a position of a control rod associated with the fuel injection pump. The signal generator is coupled with the control rod and a pneumatic signal is transmitted by the signal generator in dependence upon a position of a control piston of the signal generator. The pneumatic control signal is transmitted to an adjusting member such as, for example, a pneumatic controller, compressed-air cylinder, or a valve, for each load condition of the engine associated with an exactly defined position of the control rod, with the control signal regulating an amount of recycled exhaust gases in accordance with an applied pressure.

  5. Variable oxygen/nitrogen enriched intake air system for internal combustion engine applications

    DOE Patents [OSTI]

    Poola, Ramesh B.; Sekar, Ramanujam R.; Cole, Roger L.

    1997-01-01

    An air supply control system for selectively supplying ambient air, oxygen enriched air and nitrogen enriched air to an intake of an internal combustion engine includes an air mixing chamber that is in fluid communication with the air intake. At least a portion of the ambient air flowing to the mixing chamber is selectively diverted through a secondary path that includes a selectively permeable air separating membrane device due a differential pressure established across the air separating membrane. The permeable membrane device separates a portion of the nitrogen in the ambient air so that oxygen enriched air (permeate) and nitrogen enriched air (retentate) are produced. The oxygen enriched air and the nitrogen enriched air can be selectively supplied to the mixing chamber or expelled to atmosphere. Alternatively, a portion of the nitrogen enriched air can be supplied through another control valve to a monatomic-nitrogen plasma generator device so that atomic nitrogen produced from the nitrogen enriched air can be then injected into the exhaust of the engine. The oxygen enriched air or the nitrogen enriched air becomes mixed with the ambient air in the mixing chamber and then the mixed air is supplied to the intake of the engine. As a result, the air being supplied to the intake of the engine can be regulated with respect to the concentration of oxygen and/or nitrogen.

  6. Optimization of Direct-Injection H2 Combustion Engine Performance...

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

    More Documents & Publications Optimization of Direct-Injection H2 Combustion Engine Performance, Efficiency, and Emissions H2 Internal Combustion Engine Research Towards 45% ...

  7. Evaluation and silicon nitride internal combustion engine components. Final report, Phase I

    SciTech Connect (OSTI)

    Voldrich, W.

    1992-04-01

    The feasibility of silicon nitride (Si{sub 3}N{sub 4}) use in internal combustion engines was studied by testing three different components for wear resistance and lower reciprocating mass. The information obtained from these preliminary spin rig and engine tests indicates several design changes are necessary to survive high-stress engine applications. The three silicon nitride components tested were valve spring retainers, tappet rollers, and fuel pump push rod ends. Garrett Ceramic Components` gas-pressure sinterable Si{sub 3}N{sub 4} (GS-44) was used to fabricate the above components. Components were final machined from densified blanks that had been green formed by isostatic pressing of GS-44 granules. Spin rig testing of the valve spring retainers indicated that these Si{sub 3}N{sub 4} components could survive at high RPM levels (9,500) when teamed with silicon nitride valves and lower spring tension than standard titanium components. Silicon nitride tappet rollers showed no wear on roller O.D. or I.D. surfaces, steel axles and lifters; however, due to the uncrowned design of these particular rollers the cam lobes indicated wear after spin rig testing. Fuel pump push rod ends were successful at reducing wear on the cam lobe and rod end when tested on spin rigs and in real-world race applications.

  8. Engine combustion and flow diagnostics

    SciTech Connect (OSTI)

    1995-12-31

    This informative publication discusses the application of diagnostic techniques to internal combustion engines. The papers included fall into three broad categories: flow diagnostics, combustion diagnostics, and fuel spray diagnostics. Contents include: controlling combustion in a spark ignition engine by quantitative fuel distribution; a model for converting SI engine flame arrival signals into flame contours; in-cylinder diesel flame imaging compared with numerical computations; ignition and early soot formation in a DI diesel engine using multiple 2-D imaging diagnostics; investigation of diesel sprays using diffraction-based droplet sizing; fuel distribution effects on the combustion of a direct-injection stratified-charge engine; and 2-D measurements of the liquid phase temperature in fuel sprays.

  9. Proceedings of the 1996 spring technical conference of the ASME Internal Combustion Engine Division. Volume 2: Engine design and engine systems; ICE-Volume 26-2

    SciTech Connect (OSTI)

    Uzkan, T.

    1996-12-31

    Although the cost of the petroleum crude has not increased much within the last decade, the drive to develop internal combustion engines is still continuing. The basic motivation of this drive is to reduce both emissions and costs. Recent developments in computer chip production and information management technology have opened up new applications in engine controls and monitoring. The development of new information is continuing at a rapid pace. Some of these research and development results were presented at the 1996 Spring Technical Conference of the ASME Internal Combustion Engine Division in Youngstown, Ohio, April 21--24, 1996. The papers presented covered various aspects of the design, development, and application of compression ignition and spark ignition engines. The conference was held at the Holiday Inn Metroplex Complex and hosted by Altronic Incorporated of Girard, Ohio. The written papers submitted to the conference have been published in three conference volumes. Volume 2 includes the papers on the topics of engine design, engine systems, and engine user experience.

  10. Flame front imaging in an internal-combustion engine simulator by laser-induced fluorescence of acetaldehyde

    SciTech Connect (OSTI)

    Arnold, A.; Becker, H.; Suntz, R.; Monkhouse, P.; Wolfrum, J. ); Maly, R.; Pfister, W. )

    1990-08-01

    Acetaldehyde has been used as a fluorescent dopant for two-dimensional imaging of the flame front in an internal-combustion-engine simulator. The molecule was excited with a XeCl-laser-light sheet at 308 nm, and broadband fluorescence centered at 400 nm was detected. In this way, the flame front could be marked by mapping regions of unburned gas. Also, the intake process into the engine could be followed.

  11. Vehicle Technologies Office: 2015 Advanced Combustion Engine...

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

    technologies under development. Research focuses on addressing critical barriers to commercializing higher efficiency, very low emissions advanced internal combustion engines for ...

  12. Vehicle Technologies Office: 2014 Advanced Combustion Engine...

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

    technologies under development. Research focuses on addressing critical barriers to commercializing higher efficiency, very low emissions advanced internal combustion engines for ...

  13. Stratified cross combustion engine

    SciTech Connect (OSTI)

    Rhoads, J.L.

    1981-06-23

    A piston engine is provided in which adjacent cylinder pairs share a common combustion chamber and the pistons are mounted to reciprocate substantially in phase, one of the pistons in each piston pair receiving a rich mixture which is ignited by a sparkplug in that cylinder, with the other cylinder in the cylinder pair being passive in its preferred form, and receiving through a separate intake valve either pure air or a leaner mixture into which the combusted richer mixture pours, insuring that the greatest combustion possible resulting in the greatest percentage of carbon dioxide formation as opposed to carbon monoxide is created.

  14. Vehicle Technologies Office: 2014 Advanced Combustion Engine...

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

    2014 Advanced Combustion Engine Annual Progress Report Vehicle Technologies Office: 2014 Advanced Combustion Engine Annual Progress Report The Advanced Combustion Engine research...

  15. A Highly Efficient Six-Stroke Internal Combustion Engine Cycle with Water Injection for In-Cylinder Exhaust Heat Recovery

    SciTech Connect (OSTI)

    Conklin, Jim; Szybist, James P

    2010-01-01

    A concept is presented here that adds two additional strokes to the four-stroke Otto or Diesel cycle that has the potential to increase fuel efficiency of the basic cycle. The engine cycle can be thought of as a 4 stroke Otto or Diesel cycle followed by a 2-stroke heat recovery steam cycle. Early exhaust valve closing during the exhaust stroke coupled with water injection are employed to add an additional power stroke at the end of the conventional four-stroke Otto or Diesel cycle. An ideal thermodynamics model of the exhaust gas compression, water injection at top center, and expansion was used to investigate this modification that effectively recovers waste heat from both the engine coolant and combustion exhaust gas. Thus, this concept recovers energy from two waste heat sources of current engine designs and converts heat normally discarded to useable power and work. This concept has the potential of a substantial increase in fuel efficiency over existing conventional internal combustion engines, and under appropriate injected water conditions, increase the fuel efficiency without incurring a decrease in power density. By changing the exhaust valve closing angle during the exhaust stroke, the ideal amount of exhaust can be recompressed for the amount of water injected, thereby minimizing the work input and maximizing the mean effective pressure of the steam expansion stroke (MEPsteam). The value of this exhaust valve closing for maximum MEPsteam depends on the limiting conditions of either one bar or the dew point temperature of the expansion gas/moisture mixture when the exhaust valve opens to discard the spent gas mixture in the sixth stroke. The range of MEPsteam calculated for the geometry of a conventional gasoline spark-ignited internal combustion engine and for plausible water injection parameters is from 0.75 to 2.5 bars. Typical combustion mean effective pressures (MEPcombustion) of naturally aspirated gasoline engines are up to 10 bar, thus this

  16. Method of combustion for dual fuel engine

    DOE Patents [OSTI]

    Hsu, B.D.; Confer, G.L.; Zujing Shen; Hapeman, M.J.; Flynn, P.L.

    1993-12-21

    Apparatus and a method of introducing a primary fuel, which may be a coal water slurry, and a high combustion auxiliary fuel, which may be a conventional diesel oil, into an internal combustion diesel engine comprises detecting the load conditions of the engine, determining the amount of time prior to the top dead center position of the piston to inject the main fuel into the combustion chamber, and determining the relationship of the timing of the injection of the auxiliary fuel into the combustion chamber to achieve a predetermined specific fuel consumption, a predetermined combustion efficiency, and a predetermined peak cylinder firing pressure. 19 figures.

  17. Method of combustion for dual fuel engine

    DOE Patents [OSTI]

    Hsu, Bertrand D.; Confer, Gregory L.; Shen, Zujing; Hapeman, Martin J.; Flynn, Paul L.

    1993-12-21

    Apparatus and a method of introducing a primary fuel, which may be a coal water slutty, and a high combustion auxiliary fuel, which may be a conventional diesel oil, into an internal combustion diesel engine comprises detecting the load conditions of the engine, determining the amount of time prior to the top dead center position of the piston to inject the main fuel into the combustion chamber, and determining the relationship of the timing of the injection of the auxiliary fuel into the combustion chamber to achieve a predetermined specific fuel consumption, a predetermined combustion efficiency, and a predetermined peak cylinder firing pressure.

  18. Engine Valve Actuation For Combustion Enhancement

    DOE Patents [OSTI]

    Reitz, Rolf Deneys; Rutland, Christopher J.; Jhavar, Rahul

    2004-05-18

    A combustion chamber valve, such as an intake valve or an exhaust valve, is briefly opened during the compression and/or power strokes of a 4-stroke combustion cycle in an internal combustion engine (in particular, a diesel or CI engine). The brief opening may (1) enhance mixing withing the combustion chamber, allowing more complete oxidation of particulates to decrease engine emissions; and/or may (2) delay ignition until a more desirable time, potentially allowing a means of timing ignition in otherwise difficult-to-control conditions, e.g., in HCCI (Homogeneous Charge Compression Ignition) conditions.

  19. Engine valve actuation for combustion enhancement

    DOE Patents [OSTI]

    Reitz, Rolf Deneys; Rutland, Christopher J.; Jhavar, Rahul

    2008-03-04

    A combustion chamber valve, such as an intake valve or an exhaust valve, is briefly opened during the compression and/or power strokes of a 4-strokes combustion cycle in an internal combustion engine (in particular, a diesel or CI engine). The brief opening may (1) enhance mixing withing the combustion chamber, allowing more complete oxidation of particulates to decrease engine emissions; and/or may (2) delay ignition until a more desirable time, potentially allowing a means of timing ignition in otherwise difficult-to-control conditions, e.g., in HCCI (Homogeneous Charge Compression Ignition) conditions.

  20. Optimization of Advanced Diesel Engine Combustion Strategies...

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

    More Documents & Publications Optimization of Advanced Diesel Engine Combustion Strategies Optimization of Advanced Diesel Engine Combustion Strategies Computational Fluid Dynamics ...

  1. Method and system for controlled combustion engines

    DOE Patents [OSTI]

    Oppenheim, A. K.

    1990-01-01

    A system for controlling combustion in internal combustion engines of both the Diesel or Otto type, which relies on establishing fluid dynamic conditions and structures wherein fuel and air are entrained, mixed and caused to be ignited in the interior of a multiplicity of eddies, and where these structures are caused to sequentially fill the headspace of the cylinders.

  2. Vehicle Technologies Office: Advanced Combustion Engines | Department of

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

    Energy Fuel Efficiency & Emissions » Vehicle Technologies Office: Advanced Combustion Engines Vehicle Technologies Office: Advanced Combustion Engines Researchers take laser-based velocity measurements at the Sandia National Laboratory's Combustion Research Facility. Researchers take laser-based velocity measurements at the Sandia National Laboratory's Combustion Research Facility. Improving the efficiency of internal combustion engines is one of the most promising and cost-effective

  3. Increased Engine Efficiency via Advancements in Engine Combustion...

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

    Engine Efficiency via Advancements in Engine Combustion Systems Increased Engine Efficiency via Advancements in Engine Combustion Systems Presentation given at the 16th Directions...

  4. Rotary reciprical combustion engines

    SciTech Connect (OSTI)

    Blount, D.H.

    1992-10-20

    This patent describes a rotary-reciprocal combustion engine having a cycle which includes the four strokes of intake, compression, expansion and exhaustion, the engine. It comprises: a housing formed with a peripheral wall with side walls, a rotor in the housing, the inner surface of the peripheral inner wall being cylindrical; a shaft; mounted in the center of the housing, passing through the rotor's hub and extending through the side walls of the housing, the hub having means to allow the rotor to reciprocate on the shaft while the shaft is rotating with the rotor; a reciprocal and rotary guide having means to guide the rotary and reciprocal motions of the rotor while keeping the rotor's piston in continuous sealing contact with the cylinder chamber walls and varying the volume of the cylinder chambers enabling a compression of a gaseous mixture to take place after aspirating a gaseous mixture; an ignition system having means for igniting compressed gaseous mixture and expansion of the cylinder chambers due to pressure of the combustion products.

  5. Method and apparatus utilizing valve throttling and charge stratification in the operation of an internal combustion engine

    SciTech Connect (OSTI)

    Burandt, C.O.

    1988-02-16

    In an internal combustion engine this patent describes means forming a combustion chamber, a spark plug in the chamber, a piston disposed in the chamber for reciprocable movement toward and away from the spark plug, a valve member, circular seat means for the valve member, means for varying the lift of the valve member, a generally cylindrical shroud corresponding generally to the size of the seat means. The cylindrical shroud is relieved only in the direction of the spark plug so that, when the valve member is moved relative to the shroud by the lift-varying means, a stratified mixture of air and fuel is directed toward the spark plug until the lift-varying means causes the valve member to pass beyond the shroud so that during the initial lift of the valve member the stratified air and fuel mixture is directed solely toward the spark plug until the valve member passes beyond the shroud and the air and fuel mixture is directed generally through a 360/sup 0/ arc after the valve member passes beyond the shroud, and means limiting the lift of the valve member so that it does not pass the shroud during lighter loads, whereby the air and fuel mixture is directed primarily toward the spark plug until the valve member passes beyond the shroud.

  6. Performance, Efficiency, and Emissions Characterization of Reciprocating Internal Combustion Engines Fueled with Hydrogen/Natural Gas Blends

    SciTech Connect (OSTI)

    Kirby S. Chapman; Amar Patil

    2007-06-30

    Hydrogen is an attractive fuel source not only because it is abundant and renewable but also because it produces almost zero regulated emissions. Internal combustion engines fueled by compressed natural gas (CNG) are operated throughout a variety of industries in a number of mobile and stationary applications. While CNG engines offer many advantages over conventional gasoline and diesel combustion engines, CNG engine performance can be substantially improved in the lean operating region. Lean operation has a number of benefits, the most notable of which is reduced emissions. However, the extremely low flame propagation velocities of CNG greatly restrict the lean operating limits of CNG engines. Hydrogen, however, has a high flame speed and a wide operating limit that extends into the lean region. The addition of hydrogen to a CNG engine makes it a viable and economical method to significantly extend the lean operating limit and thereby improve performance and reduce emissions. Drawbacks of hydrogen as a fuel source, however, include lower power density due to a lower heating value per unit volume as compared to CNG, and susceptibility to pre-ignition and engine knock due to wide flammability limits and low minimum ignition energy. Combining hydrogen with CNG, however, overcomes the drawbacks inherent in each fuel type. Objectives of the current study were to evaluate the feasibility of using blends of hydrogen and natural gas as a fuel for conventional natural gas engines. The experiment and data analysis included evaluation of engine performance, efficiency, and emissions along with detailed in-cylinder measurements of key physical parameters. This provided a detailed knowledge base of the impact of using hydrogen/natural gas blends. A four-stroke, 4.2 L, V-6 naturally aspirated natural gas engine coupled to an eddy current dynamometer was used to measure the impact of hydrogen/natural gas blends on performance, thermodynamic efficiency and exhaust gas emissions

  7. Past experiences with automotive external combustion engines

    SciTech Connect (OSTI)

    Amann, C.A.

    1999-07-01

    GMR (General Motors Research Laboratories, now GM R and D Center) has a history of improving the internal combustion engine, especially as it relates to automotive use. During the quarter century from 1950--75, considerable effort was devoted to evaluating alternative powerplants based on thermodynamic cycles different from those on which the established spark-ignition and diesel engines are founded. Two of these, the steam engine and the Stirling engine, incorporated external combustion. Research on those two alternatives is reviewed. Both were judged to fall short of current needs for commercial success as prime movers for conventional automotive vehicles.

  8. Thermodynamic Advantages of Low Temperature Combustion Engines...

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

    Advantages of Low Temperature Combustion Engines Including the Use of Low Heat Rejection Concepts Thermodynamic Advantages of Low Temperature Combustion Engines Including the Use ...

  9. Optimization of Advanced Diesel Engine Combustion Strategies...

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

    Optimization of Advanced Diesel Engine Combustion Strategies Optimization of Advanced Diesel Engine Combustion Strategies Use of Low Cetane Fuel to Enable Low Temperature ...

  10. A Workshop to Identify Research Needs and Impacts in Predictive Simulation for Internal Combustion Engines (PreSICE)

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

    walsh.pdf (883.12 KB) More Documents & Publications EPA Diesel Update EPA Mobile Source Rule Update

    Broad view of DOE's approach to addressing transportation sector oil dependence deer11_sandalow.pdf (3.19 MB) More Documents & Publications Overview of the Advanced Combustion Engine R&D Vehicle Technologies Office Merit Review 2014: Overview of the DOE Advanced Combustion Engine R&D 21st Century Truck Partnership Roadmap Roadmap and Technical White Papers - 21CTP-0003, December

  11. Vehicle Technologies Office Merit Review 2014: Internal Combustion Engine Energy Retention (ICEER)

    Broader source: Energy.gov [DOE]

    Presentation given by National Renewable Energy Laboratory at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about Internal...

  12. Integrated Advanced Reciprocating Internal Combustion Engine System for Increased Utilization of Gaseous Opportunity Fuels

    SciTech Connect (OSTI)

    Pratapas, John; Zelepouga, Serguei; Gnatenko, Vitaliy; Saveliev, Alexei; Jangale, Vilas; Li, Hailin; Getz, Timothy; Mather, Daniel

    2013-08-31

    The project is addressing barriers to or opportunities for increasing distributed generation (DG)/combined heat and power (CHP) use in industrial applications using renewable/opportunity fuels. This project brings together novel gas quality sensor (GQS) technology with engine management for opportunity fuels such as landfill gas, digester gas and coal bed methane. By providing the capability for near real-time monitoring of the composition of these opportunity fuels, the GQS output can be used to improve the performance, increase efficiency, raise system reliability, and provide improved project economics and reduced emissions for engines used in distributed generation and combined heat and power.

  13. Air-fuel ratio controller for a turbocharged internal combustion engine

    SciTech Connect (OSTI)

    Serve, J.V.; Eckard, D.W.

    1988-09-13

    This patent describes an air-fuel ratio controller for a gaseous-fueled, turbo-charged engine having an air manifold, a gas manifold, and a turbine inlet. The controller consists of: means for controlling air manifold pressure, comprising means for providing an air manifold pressure set point signal based on gas manifold pressure and engine RPM's and at least one constant input; and means for controlling turbine inlet temperature, the means comprising means for modulating the slope of the set point signal for the air manifold pressure controller.

  14. Investigation of a rotary valving system with variable valve timing for internal combustion engines: Final technical report

    SciTech Connect (OSTI)

    Cross, P.C.; Hansen, C.N.

    1994-11-18

    The objective of the program was to provide a functional demonstration of the Hansen Rotary Valving System with Variable Valve timing (HRVS/VVT), capable of throttleless inlet charge control, as an alternative to conventional poppet-valves for use in spark ignited internal combustion engines. The goal of this new technology is to secure benefits in fuel economy, broadened torque band, vibration reduction, and overhaul accessibility. Additionally, use of the variable valve timing capability to vary the effective compression ratio is expected to improve multi-fuel tolerance and efficiency. Efforts directed at the design of HRVS components proved to be far more extensive than had been anticipated, ultimately requiring that proof-trial design/development work be performed. Although both time and funds were exhausted before optical or ion-probe types of in-cylinder investigation could be undertaken, a great deal of laboratory data was acquired during the course of the design/development work. This laboratory data is the basis for the information presented in this Final Report.

  15. Evaluation of Sialon internal combustion engine components and fabrication of several ceramic components for automotive applications

    SciTech Connect (OSTI)

    McMurtry, C.H.; Ten Eyck, M.O.

    1992-10-01

    Fabrication development work was carried out on a push-rod tip having a stepped OD design and a 90{degree} shoulder in the transition area. Spray-dried Sialon premix was used in dry press tooling, and components were densified to about 98% of theoretical density using pressureless sintering conditions. Upon evaluation of the sintered components, it was found that afl components showed defects in the transition area. Modifications of the pressing parameters, incorporation of a 45{degree} angle in the shoulder area, and the use of tailored premix did not lead to the fabrication of defect-free parts. From these observations, it was concluded that the original part design could not easily be adapted to high-volume ceramic manufacturing methods. Subsequently, a modification to the desip was implemented. An SiC material with improved toughness (Hexoloy SX) was used for fabricating several test components with a closely machined, straight OD design. Pressureless-sintered and post-hot isostatically pressed (HIPed) Hexoloy SX components were supplied to The American Ceramic Engine Company (ACE) for assembly and testing. Fuel pump push-rod assemblies with Hemoloy SX tips were prepared by ACE, but no testing has been carried out to date.

  16. Evaluation of Sialon internal combustion engine components and fabrication of several ceramic components for automotive applications

    SciTech Connect (OSTI)

    McMurtry, C.H.; Ten Eyck, M.O.

    1992-10-01

    Fabrication development work was carried out on a push-rod tip having a stepped OD design and a 90[degree] shoulder in the transition area. Spray-dried Sialon premix was used in dry press tooling, and components were densified to about 98% of theoretical density using pressureless sintering conditions. Upon evaluation of the sintered components, it was found that afl components showed defects in the transition area. Modifications of the pressing parameters, incorporation of a 45[degree] angle in the shoulder area, and the use of tailored premix did not lead to the fabrication of defect-free parts. From these observations, it was concluded that the original part design could not easily be adapted to high-volume ceramic manufacturing methods. Subsequently, a modification to the desip was implemented. An SiC material with improved toughness (Hexoloy SX) was used for fabricating several test components with a closely machined, straight OD design. Pressureless-sintered and post-hot isostatically pressed (HIPed) Hexoloy SX components were supplied to The American Ceramic Engine Company (ACE) for assembly and testing. Fuel pump push-rod assemblies with Hemoloy SX tips were prepared by ACE, but no testing has been carried out to date.

  17. Supersonic combustion engine and method of combustion initiation and distribution

    SciTech Connect (OSTI)

    Stickler, D.B.; Ballantyne, A.; Kyuman Jeong.

    1993-06-29

    A supersonic combustion ramjet engine having a combustor with a combustion zone intended to channel gas flow at relatively high speed therethrough, the engine comprising: means for substantially continuously supplying fuel into the combustion zone; and means for substantially instantaneously igniting a volume of fuel in the combustion zone for providing a spatially controlled combustion distribution, the igniting means having means for providing a diffuse discharge of energy into the volume, the volume extending across a substantially complete cross-sectional area of the combustion zone, the means for discharging energy being capable of generating free radicals within the volume of reactive fuel in the combustion zone such that fuel in the volume can initiate a controlled relatively rapid combustion of fuel in the combustion zone whereby combustion distribution in relatively high speed gas flows through the combustion zone can be initiated and controlled without dependence upon a flame holder or relatively high local static temperature in the combustion zone.

  18. Hydrogen engine and combustion control process

    DOE Patents [OSTI]

    Swain, Michael R.; Swain, Matthew N.

    1997-01-01

    Hydrogen engine with controlled combustion comprises suction means connected to the crankcase reducing or precluding flow of lubricating oil or associated gases into the combustion chamber.

  19. Staged combustion with piston engine and turbine engine supercharger

    DOE Patents [OSTI]

    Fischer, Larry E.; Anderson, Brian L.; O'Brien, Kevin C.

    2011-11-01

    A combustion engine method and system provides increased fuel efficiency and reduces polluting exhaust emissions by burning fuel in a two-stage combustion system. Fuel is combusted in a piston engine in a first stage producing piston engine exhaust gases. Fuel contained in the piston engine exhaust gases is combusted in a second stage turbine engine. Turbine engine exhaust gases are used to supercharge the piston engine.

  20. Staged combustion with piston engine and turbine engine supercharger

    DOE Patents [OSTI]

    Fischer, Larry E.; Anderson, Brian L.; O'Brien, Kevin C.

    2006-05-09

    A combustion engine method and system provides increased fuel efficiency and reduces polluting exhaust emissions by burning fuel in a two-stage combustion system. Fuel is combusted in a piston engine in a first stage producing piston engine exhaust gases. Fuel contained in the piston engine exhaust gases is combusted in a second stage turbine engine. Turbine engine exhaust gases are used to supercharge the piston engine.

  1. FY2014 Advanced Combustion Engine Annual Progress Report

    SciTech Connect (OSTI)

    2015-03-01

    The Advanced Combustion Engine research and development (R&D) subprogram within the DOE Vehicle Technologies Office (VTO) provides support and guidance for many cutting-edge automotive technologies under development. Research focuses on addressing critical barriers to commercializing higher efficiency, very low emissions advanced internal combustion engines for passenger and commercial vehicles.

  2. ABB Combustion Engineering nuclear technology

    SciTech Connect (OSTI)

    Matzie, R.A.

    1994-12-31

    The activities of ABB Combustion Engineering in the design and construction of nuclear systems and components are briefly reviewed. ABB Construction Engineering continues to improve the design and design process for nuclear generating stations. Potential improvements are evaluated to meet new requirements both of the public and the regulator, so that the designs meet the highest standards worldwide. Advancements necessary to meet market needs and to ensure the highest level of performance in the future will be made.

  3. Engine Combustion Network Experimental Data

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Maintained by the Engine Combustion Department of Sandia National Laboratories, data currently available on the website includes reacting and non-reacting sprays in a constant-volume chamber at conditions typical of diesel combustion. The data are useful for model development and validation because of the well-defined boundary conditions and the wide range of conditions employed. A search utility displays data based on experimental conditions such as ambient temperature, ambient density, injection pressure, nozzle size, fuel, etc. Experiment-related visualizations are also available. The search utility for experimental data is located at http://public.ca.sandia.gov/ecn/cvdata/frameset.html (Specialized Interface)

  4. Engine Combustion Network Experimental Data

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Maintained by the Engine Combustion Department of Sandia National Laboratories, data currently available on the website includes reacting and non-reacting sprays in a constant-volume chamber at conditions typical of diesel combustion. The data are useful for model development and validation because of the well-defined boundary conditions and the wide range of conditions employed. A search utility displays data based on experimental conditions such as ambient temperature, ambient density, injection pressure, nozzle size, fuel, etc. Experiment-related visualizations are also available. (Specialized Interface)

  5. Distributed ignition method and apparatus for a combustion engine

    DOE Patents [OSTI]

    Willi, Martin L.; Bailey, Brett M.; Fiveland, Scott B.; Gong, Weidong

    2006-03-07

    A method and apparatus for operating an internal combustion engine is provided. The method comprises the steps of introducing a primary fuel into a main combustion chamber of the engine, introducing a pilot fuel into the main combustion chamber of the engine, determining an operating load of the engine, determining a desired spark plug ignition timing based on the engine operating load, and igniting the primary fuel and pilot fuel with a spark plug at the desired spark plug ignition timing. The method is characterized in that the octane number of the pilot fuel is lower than the octane number of the primary fuel.

  6. Computational Fluid Dynamics Modeling of Diesel Engine Combustion...

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

    Computational Fluid Dynamics Modeling of Diesel Engine Combustion and Emissions Computational Fluid Dynamics Modeling of Diesel Engine Combustion and Emissions 2005 Diesel Engine ...

  7. Engine Combustion Network (ECN): Global sensitivity analysis...

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

    10 Date Published June 2015 Keywords diesel, Engine Combustion Network, global sensitivity ... The uncertainty in the fuel temperature was found to have a profound influence on the ...

  8. FY2012 Annual Progress Report for Advanced Combustion Engine Research and Development

    SciTech Connect (OSTI)

    None

    2013-02-01

    Annual report on the work of the the Advanced Combustion Engine R&D subprogram. The Advanced Combustion Engine R&D subprogram supports the Vehicle Technologies Office mission by removing the critical technical barriers to commercialization of advanced internal combustion engines (ICEs) for passenger and commercial vehicles that meet future federal emissions regulations.

  9. MN Center for Renewable Energy: Cellulosic Ethanol, Optimization of Bio-fuels in Internal Combustion Engines, & Course Development for Technicians in These Areas

    SciTech Connect (OSTI)

    John Frey

    2009-02-22

    This final report for Grant #DE-FG02-06ER64241, MN Center for Renewable Energy, will address the shared institutional work done by Minnesota State University, Mankato and Minnesota West Community and Technical College during the time period of July 1, 2006 to December 30, 2008. There was a no-cost extension request approved for the purpose of finalizing some of the work. The grant objectives broadly stated were to 1) develop educational curriculum to train technicians in wind and ethanol renewable energy, 2) determine the value of cattails as a biomass crop for production of cellulosic ethanol, and 3) research in Optimization of Bio-Fuels in Internal Combustion Engines. The funding for the MN Center for Renewable Energy was spent on specific projects related to the work of the Center.

  10. Multicylinder Diesel Engine for Low Temperature Combustion Operation...

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

    for Low Temperature Combustion Operation Multicylinder Diesel Engine for Low Temperature Combustion Operation Fuel injection strategies to extend low temperature combustion ...

  11. Increased Engine Efficiency via Advancements in Engine Combustion Systems |

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

    Department of Energy Engine Efficiency via Advancements in Engine Combustion Systems Increased Engine Efficiency via Advancements in Engine Combustion Systems Presentation given at the 16th Directions in Engine-Efficiency and Emissions Research (DEER) Conference in Detroit, MI, September 27-30, 2010. deer10_sisken.pdf (978.17 KB) More Documents & Publications High-Efficiency Engine Technologies Session Introduction Demonstrating and Validating a Next Generation Model-Based Controller for

  12. Combustion diagnostic for active engine feedback control

    DOE Patents [OSTI]

    Green, Jr., Johney Boyd; Daw, Charles Stuart; Wagner, Robert Milton

    2007-10-02

    This invention detects the crank angle location where combustion switches from premixed to diffusion, referred to as the transition index, and uses that location to define integration limits that measure the portions of heat released during the combustion process that occur during the premixed and diffusion phases. Those integrated premixed and diffusion values are used to develop a metric referred to as the combustion index. The combustion index is defined as the integrated diffusion contribution divided by the integrated premixed contribution. As the EGR rate is increased enough to enter the low temperature combustion regime, PM emissions decrease because more of the combustion process is occurring over the premixed portion of the heat release rate profile and the diffusion portion has been significantly reduced. This information is used to detect when the engine is or is not operating in a low temperature combustion mode and provides that feedback to an engine control algorithm.

  13. Adaptive Control to Improve Low Temperature Diesel Engine Combustion...

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

    Control to Improve Low Temperature Diesel Engine Combustion Adaptive Control to Improve Low Temperature Diesel Engine Combustion Presentation given at DEER 2006, August 20-24, ...

  14. Large Eddy Simulation (LES) Applied to Advanced Engine Combustion...

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

    Large Eddy Simulation (LES) Applied to Advanced Engine Combustion Research Large Eddy Simulation (LES) Applied to Low-Temperature and Diesel Engine Combustion Research Vehicle ...

  15. Ducted combustion chamber for direct injection engines and method

    DOE Patents [OSTI]

    Mueller, Charles

    2015-03-03

    An internal combustion engine includes an engine block having a cylinder bore and a cylinder head having a flame deck surface disposed at one end of the cylinder bore. A piston connected to a rotatable crankshaft and configured to reciprocate within the cylinder bore has a piston crown portion facing the flame deck surface such that a combustion chamber is defined within the cylinder bore and between the piston crown and the flame deck surface. A fuel injector having a nozzle tip disposed in fluid communication with the combustion chamber has at least one nozzle opening configured to inject a fuel jet into the combustion chamber along a fuel jet centerline. At least one duct defined in the combustion chamber between the piston crown and the flame deck surface has a generally rectangular cross section and extends in a radial direction relative to the cylinder bore substantially along the fuel jet centerline.

  16. The effect of ultrasonic mixing of fuel and air on the performance of an internal combustion engine

    SciTech Connect (OSTI)

    Droughton, J.V.; Deutschman, D.; Usman, L.E.

    1984-01-01

    A carburetor for a 1968 six-cylinder Ford engine was modified to meter gasoline into the engine through an ultrasonic horn. The engine, mounted on a test stand, was loaded by a water dynamometer. The tests were performed with the horn alternately activated and deactivated for two different tip configurations. Engine operating data were taken at five throttle positions and thermal efficiency and specific fuel consumption were determined for each of these positions. Marked improvement (5-10%) in these parameters was obtained at an ultrasonic power input of 20 watts.

  17. 8th International symposium on transport phenomena in combustion

    SciTech Connect (OSTI)

    1995-12-31

    The 8th International Symposium on Transport Phenomena in Combustion will be held in San Francisco, California, U.S.A., July 16-20, 1995, under the auspices of the Pacific Center of Thermal-Fluids Engineering. The purpose of the Symposium is to provide a forum for researchers and practitioners from around the world to present new developments and discuss the state of the art and future directions and priorities in the areas of transport phenomena in combustion. The Symposium is the eighth in a series; previous venues were Honolulu 1985, Tokyo 1987, Taipei 1988, Sydney 1991, Beijing 1992, Seoul 1993 and Acapulco 1994, with emphasis on various aspects of transport phenomena. The current Symposium theme is combustion. The Symposium has assembled a balanced program with topics ranging from fundamental research to contemporary applications of combustion theory. Invited keynote lecturers will provide extensive reviews of topics of great interest in combustion. Colloquia will stress recent advances and innovations in fire spread and suppression, and in low NO{sub x} burners, furnaces, boilers, internal combustion engines, and other practical combustion systems. Finally, numerous papers will contribute to the fundamental understanding of complex processes in combustion. This document contains abstracts of papers to be presented at the Symposium.

  18. Pulsed jet combustion generator for premixed charge engines

    DOE Patents [OSTI]

    Oppenheim, A. K.; Stewart, H. E.; Hom, K.

    1990-01-01

    A method and device for generating pulsed jets which will form plumes comprising eddie structures, which will entrain a fuel/air mixture from the head space of an internal combustion engine, and mixing this fuel/air mixture with a pre-ignited fuel/air mixture of the plumes thereby causing combustion of the reactants to occur within the interior of the eddie structures.

  19. Integrated Combined Heat and Power/Advanced Reciprocating Internal Combustion Engine System for Landfill Gas to Power Applications

    SciTech Connect (OSTI)

    2009-02-01

    Gas Technology Institute will collaborate with Integrated CHP Systems Corporation, West Virginia University, Vronay Engineering Services, KAR Engineering Associates, Pioneer Air Systems, and Energy Concepts Company to recover waste heat from reciprocating engines. The project will integrate waste heat recovery along with gas clean-up technology system improvements. This will address fuel quality issues that have hampered expanded use of opportunity fuels such as landfill gas, digester biogas, and coal mine methane. This will enable increased application of CHP using renewable and domestically derived opportunity fuels.

  20. 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 ...

  1. Development of High-Efficiency Clean Combustion Engines Designs...

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

    High-Efficiency Clean Combustion Engines Designs for SI and CI Engines Development of High-Efficiency Clean Combustion Engines Designs for SI and CI Engines 2010 DOE Vehicle...

  2. Progress of the Engine Combustion Network | Department of Energy

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

    of the Engine Combustion Network Progress of the Engine Combustion Network ECN seeks to accelerate development of clean high-efficiency engines. deer09_pickett.pdf (1.91 MB) More Documents & Publications Spray Combustion Cross-Cut Engine Research Vehicle Technologies Office Merit Review 2015: Spray Combustion Cross-Cut Engine Research Vehicle Technologies Office Merit Review 2016: Spray Combustion Cross-Cut Engine Research

  3. Combustion mode switching with a turbocharged/supercharged engine

    DOE Patents [OSTI]

    Mond, Alan; Jiang, Li

    2015-09-22

    A method for switching between low- and high-dilution combustion modes in an internal combustion engine having an intake passage with an exhaust-driven turbocharger, a crankshaft-driven positive displacement supercharger downstream of the turbocharger and having variable boost controllable with a supercharger bypass valve, and a throttle valve downstream of the supercharger. The current combustion mode and mass air flow are determined. A switch to the target combustion mode is commanded when an operating condition falls within a range of predetermined operating conditions. A target mass air flow to achieve a target air-fuel ratio corresponding to the current operating condition and the target combustion mode is determined. The degree of opening of the supercharger bypass valve and the throttle valve are controlled to achieve the target mass air flow. The amount of residual exhaust gas is manipulated.

  4. Study of autoignition in a premixed charge, internal combustion engine using comprehensive chemical kinetics: experiments and predictions

    SciTech Connect (OSTI)

    Dimpelfeld, P.M.

    1985-01-01

    A model is developed to predict autoignition in a premixed charge engine. Experimental data are obtained with spark ignition and premixed charge compression ignition. Seven fuels are examined: methane, ethane, propane, n-butane, methanol, ethylene, and propylene. Binary fuel mixtures are also examined, as are the effects of engine speed, equivalence ratio, load, and compression ratio. An initial temperature correction must be used to accurately predict the observed time of autoignition. Analysis of spark-ignited data show that the fuels fall into two groups, depending on the temperature correction ranging from 35 K to 80 K: methane, propane, n-butane, and methanol. Three fuels fall into the group with a temperature correction ranging from 110K and 140K: ethane, ethylene, and propylene. The rate of pressure rise during compression ignition is controlled by varying the fuel-air equivalence ratio. The effects of compression ratio and load on the rate and load on the rate of pressure rise are also examined. The predicted rates of temperature rise during compression ignition are compared to the observed rates of temperature rise.

  5. General Motors Clean Combustion Engines Advanced with Predictive...

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

    Motors Clean Combustion Engines Advanced with Predictive Simulation Tools Sandia National ... batteries and hydrogen storage; clean advanced combustion; and future generation ...

  6. Combustion Model for Engine Concept Development | Department of Energy

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

    Model for Engine Concept Development Combustion Model for Engine Concept Development Presentation shows how 1-cylinder testing, 3D combustion CFD and 1D gas exchange with an advanced combustion model are used together for fast, reliable predictions deer12_andersson.pdf (1.12 MB) More Documents & Publications Partially Premixed Combustion Flex Fuel Optimized SI and HCCI Engine High-Efficiency, Ultra-Low Emission Combustion in a Heavy-Duty Engine via Fuel Reactivity Control

  7. A combustion model for IC engine combustion simulations with multi-component fuels

    SciTech Connect (OSTI)

    Ra, Youngchul; Reitz, Rolf D.

    2011-01-15

    Reduced chemical kinetic mechanisms for the oxidation of representative surrogate components of a typical multi-component automotive fuel have been developed and applied to model internal combustion engines. Starting from an existing reduced mechanism for primary reference fuel (PRF) oxidation, further improvement was made by including additional reactions and by optimizing reaction rate constants of selected reactions. Using a similar approach to that used to develop the reduced PRF mechanism, reduced mechanisms for the oxidation of n-tetradecane, toluene, cyclohexane, dimethyl ether (DME), ethanol, and methyl butanoate (MB) were built and combined with the PRF mechanism to form a multi-surrogate fuel chemistry (MultiChem) mechanism. The final version of the MultiChem mechanism consists of 113 species and 487 reactions. Validation of the present MultiChem mechanism was performed with ignition delay time measurements from shock tube tests and predictions by comprehensive mechanisms available in the literature. A combustion model was developed to simulate engine combustion with multi-component fuels using the present MultiChem mechanism, and the model was applied to simulate HCCI and DI engine combustion. The results show that the present multi-component combustion model gives reliable performance for combustion predictions, as well as computational efficiency improvements through the use of reduced mechanism for multi-dimensional CFD simulations. (author)

  8. Fuels for Advanced Combustion Engines (FACE) | Department of Energy

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

    for Advanced Combustion Engines (FACE) Fuels for Advanced Combustion Engines (FACE) Presentation given at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT). deer07_taylor.pdf (415.77 KB) More Documents & Publications Fuels For Advanced Combustion Engines (FACE) Fuels for Advanced Combustion Engines Fuels for Advanced

  9. Hydrogen Assisted Diesel Combustion in a Common Rail Turbodiesel Engine |

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

    Department of Energy Assisted Diesel Combustion in a Common Rail Turbodiesel Engine Hydrogen Assisted Diesel Combustion in a Common Rail Turbodiesel Engine This study measured the effects of hydrogen substitution on engine performance and reducing NOx emissions in a diesel engine deer09_boehman.pdf (150.76 KB) More Documents & Publications Particulate Produced from Advanced Combustion Operation in a Compression Ignition Engine Advanced Diesel Combustion with Low Hydrocarbon and Carbon

  10. Engine combustion control via fuel reactivity stratification

    DOE Patents [OSTI]

    Reitz, Rolf Deneys; Hanson, Reed M.; Splitter, Derek A.; Kokjohn, Sage L.

    2015-07-14

    A compression ignition engine uses two or more fuel charges having two or more reactivities to control the timing and duration of combustion. In a preferred implementation, a lower-reactivity fuel charge is injected or otherwise introduced into the combustion chamber, preferably sufficiently early that it becomes at least substantially homogeneously dispersed within the chamber before a subsequent injection is made. One or more subsequent injections of higher-reactivity fuel charges are then made, and these preferably distribute the higher-reactivity matter within the lower-reactivity chamber space such that combustion begins in the higher-reactivity regions, and with the lower-reactivity regions following thereafter. By appropriately choosing the reactivities of the charges, their relative amounts, and their timing, combustion can be tailored to achieve optimal power output (and thus fuel efficiency), at controlled temperatures (and thus controlled NOx), and with controlled equivalence ratios (and thus controlled soot).

  11. Engine combustion control via fuel reactivity stratification

    DOE Patents [OSTI]

    Reitz, Rolf Deneys; Hanson, Reed M; Splitter, Derek A; Kokjohn, Sage L

    2013-12-31

    A compression ignition engine uses two or more fuel charges having two or more reactivities to control the timing and duration of combustion. In a preferred implementation, a lower-reactivity fuel charge is injected or otherwise introduced into the combustion chamber, preferably sufficiently early that it becomes at least substantially homogeneously dispersed within the chamber before a subsequent injection is made. One or more subsequent injections of higher-reactivity fuel charges are then made, and these preferably distribute the higher-reactivity matter within the lower-reactivity chamber space such that combustion begins in the higher-reactivity regions, and with the lower-reactivity regions following thereafter. By appropriately choose the reactivities of the charges, their relative amounts, and their timing, combustion can be tailored to achieve optimal power output (and thus fuel efficiency), at controlled temperatures (and thus controlled NOx), and with controlled equivalence ratios (and thus controlled soot).

  12. 33rd International Symposium on Combustion Hottel Lecture Applications of Quantitative Laser Sensors to Kinetics, Propulsion and Practical Combustion Systems Ronald K. Hanson Department of Mechanical Engineering Stanford University, Stanford CA, 94305

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

    for Combustion Science Stanford University Contribution R. K. Hanson and D. F. Davidson Department of Mechanical Engineering Stanford University 1 * Butanol Studies * Ignition Delay Times * Species Time-Histories * Reaction Rate Constants * Methyl Ester Studies * Ignition Delay Times Long-Term Objectives * Generate high-quality fundamental kinetics database using shock tube/laser absorption methods Leading to: * Improved detailed mechanisms for next-generation fuels First Targets: * Isomers of

  13. FY2011 Annual Progress Report for Advanced Combustion Engine Research and Development

    SciTech Connect (OSTI)

    none,

    2011-12-01

    Annual Progress Report for the Advanced Combustion Engine Research and Development (R&D) subprogram supporting the mission of the Vehicle Technologies Program by removing the critical technical barriers to commercialization of advanced internal combustion engines (ICEs) for passenger and commercial vehicles that meet future federal emissions regulations.

  14. Quantum combustion chamber for the digital engine

    SciTech Connect (OSTI)

    Evers, L.W.; Baasch, V.

    1985-01-01

    For increasing fuel economy and reducing hydrocarbon emissions, a two-stoke-cycle, loop-scavenged single cylinder engine was modified by replacing the head with a head having three subchambers and incorporating a distributing pump fuel injection system. The fuel injection system allowed one subchamber to be operated at a time. The quantum combustion system demonstrated both lower fuel consumption and lower hydrocarbon emissions than a conventional homogeneous charge engine. The experimental evidence also indicates that the combustion essentially occurred in the one chamber into which fuel was injected. Establishing stratified charge combustion by mechanically separating the regions of air from the regions of air/fuel mixtures by means of subchambers is feasible.

  15. ABB Combustion Engineering`s nuclear experience and technologies

    SciTech Connect (OSTI)

    Matzie, R.A.

    1994-12-31

    ABB Combustion Engineering`s nuclear experience and technologies are outlined. The following topics are discussed: evolutionary approach using proven technology, substantial improvement to plant safety, utility perspective up front in developing design, integrated design, competitive plant cost, operability and maintainability, standardization, and completion of US NRC technical review.

  16. Making a Difference: Heavy-Duty Combustion Engine Research Saved...

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

    Heavy-Duty Combustion Engine Research Saved Billions Making a Difference: Heavy-Duty Combustion Engine Research Saved Billions December 29, 2015 - 12:22pm Addthis Sandia researcher ...

  17. 2011 Annual Merit Review Results Report - Advanced Combustion Engine

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

    Technologies | Department of Energy Advanced Combustion Engine Technologies 2011 Annual Merit Review Results Report - Advanced Combustion Engine Technologies Merit review of DOE Vehicle Technologies research activities 2011_amr_04.pdf (12.57 MB) More Documents & Publications 2012 Annual Merit Review Results Report - Advanced Combustion Engine Technologies Advanced Combustion Engine R&D and Fuels Technology Merit Review 2010 DOE EERE Vehicle Technologies Program Merit Review -

  18. 2014 Annual Merit Review Results Report - Advanced Combustion Engine

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

    Technologies | Department of Energy Advanced Combustion Engine Technologies 2014 Annual Merit Review Results Report - Advanced Combustion Engine Technologies Merit review of DOE Vehicle Technologies research activities 2014_amr_04.pdf (7.88 MB) More Documents & Publications 2012 Annual Merit Review Results Report - Advanced Combustion Engine Technologies 2013 Annual Merit Review Results Report - Advanced Combustion Engine Technologies 2010 DOE EERE Vehicle Technologies Program Merit

  19. Influence of the Combustion Energy Release on Surface Accelerations of an HCCI Engine

    SciTech Connect (OSTI)

    Massey, Jeffery A; Eaton, Scott J; Wagner, Robert M

    2009-01-01

    Large cyclic variability along with increased combustion noise present in low temperature combustion (LTC) modes of internal combustion engines has driven the need for fast response, robust sensors for diagnostics and feedback control. Accelerometers have been shown as a possible technology for diagnostics and feedback control of advanced LTC operation in internal combustion engines. To make better use of this technology, an improved understanding is necessary of the effect of energy release from the combustion process on engine surface vibrations. This study explores the surface acceleration response for a single-cylinder engine operating with homogeneous charge compression ignition (HCCI) combustion. Preliminary investigation of the engine surface accelerations is conducted using a finite element analysis of the engine cylinder jacket along with consideration of cylindrical modes of the engine cylinder. Measured in-cylinder pressure is utilized as a load input to the FE model to provide an initial comparison of the computed and measured surface accelerations. Additionally, the cylindrical cavity resonant modes of the engine geometry are computed and the in-cylinder pressure frequency content is examined to verify this resonant behavior. Experimental correlations between heat release and surface acceleration metrics are then used to identify specific acceleration frequency bands in which characteristics of the combustion heat release process is detected with minimal structural resonant influence. Investigation of a metric capable of indicting combustion phasing is presented. Impact of variations in the combustion energy release process on the surface accelerations is discussed.

  20. Combustion Exhaust Gas Heat to Power Using Thermoelectric Engines...

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

    Exhaust Gas Heat to Power Using Thermoelectric Engines Combustion Exhaust Gas Heat to Power Using Thermoelectric Engines Discusses a novel TEG which utilizes a proprietary stack ...

  1. Multicylinder Diesel Engine for Low Temperature Combustion Operation |

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

    Department of Energy for Low Temperature Combustion Operation Multicylinder Diesel Engine for Low Temperature Combustion Operation Fuel injection strategies to extend low temperature combustion temperatures to yield low NOx at higher loads and better efficiency over the speed-load range deer08_deojeda.pdf (1.22 MB) More Documents & Publications Low Temperature Combustion Demonstrator for High Efficiency Clean Combustion Multicylinder Diesel Engine Design for HCCI Operation Impact of

  2. 2012 Annual Merit Review Results Report - Advanced Combustion Engine

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

    Technologies | Department of Energy 2 Annual Merit Review Results Report - Advanced Combustion Engine Technologies 2012 Annual Merit Review Results Report - Advanced Combustion Engine Technologies Merit review of DOE Vehicle Technologies research activities 2012_amr_04.pdf (8.69 MB) More Documents & Publications 2011 Annual Merit Review Results Report - Advanced Combustion Engine Technologies DOE Vehicle Technologies Program 2009 Merit Review Report - Advanced Combustion 2010 DOE EERE

  3. Oxygen-Enriched Combustion for Military Diesel Engine Generators |

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

    Department of Energy Oxygen-Enriched Combustion for Military Diesel Engine Generators Oxygen-Enriched Combustion for Military Diesel Engine Generators Substantial increases in brake power and considerably lower peak pressure can result from oxygen-enriched diesel combustion deer09_yelvington.pdf (196.85 KB) More Documents & Publications Development Methodology for Power-Dense Military Diesel Engine Oxygen-Enriched Combustion Emission Control Strategy for Downsized Light-Duty Diese

  4. Optimization of Advanced Diesel Engine Combustion Strategies | Department

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

    of Energy 1 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation ace020_reitz_2011_o.pdf (786.77 KB) More Documents & Publications Optimization of Advanced Diesel Engine Combustion Strategies Optimization of Advanced Diesel Engine Combustion Strategies Use of Low Cetane Fuel to Enable Low Temperature Combustion

  5. Spray Combustion Cross-Cut Engine Research | 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 ace005_pickett_2011_o.pdf (2.06 MB) More Documents & Publications Low-Temperature Diesel Combustion Cross-Cut Research Spray Combustion Cross-Cut Engine Research Progress of the Engine Combustion Network

  6. Computational Fluid Dynamics Modeling of Diesel Engine Combustion and

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

    Emissions | Department of Energy Computational Fluid Dynamics Modeling of Diesel Engine Combustion and Emissions Computational Fluid Dynamics Modeling of Diesel Engine Combustion and Emissions 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_reitz.pdf (682.47 KB) More Documents & Publications Experiments and Modeling of Two-Stage Combustion in Low-Emissions Diesel Engines Comparison of Conventional Diesel and Reactivity Controlled Compression

  7. Pilot fuel ignited stratified charge rotary combustion engine and fuel injector therefor

    SciTech Connect (OSTI)

    Loyd, R. W.

    1980-02-12

    For a pilot fuel ignited stratified charge rotary, internal combustion engine, the fuel injection system and a fuel injector therefor comprises a fuel injector having plural discharge ports with at least one of the discharge ports located to emit a ''pilot'' fuel charge (relatively rich fuel-air mixture) into a passage in the engine housing, which passage communicates with the engine combustion chambers. An ignition element is located in the passage to ignite the ''pilot'' fuel (a relatively rich fuel-air mixture) flowing through the passage. At least one other discharge port of the fuel injector is in substantially direct communication with the combustion chambers of the engine to emit a main fuel charge into the latter. The ignited ''pilot'' fuelair mixture, when ignited, flashes into the combustion chambers to ignite the main, relatively lean, fuel-air mixture which is in the combustion chambers.

  8. Surrogate Model Development for Fuels for Advanced Combustion Engines

    SciTech Connect (OSTI)

    Anand, Krishnasamy; Ra, youngchul; Reitz, Rolf; Bunting, Bruce G

    2011-01-01

    The fuels used in internal-combustion engines are complex mixtures of a multitude of different types of hydrocarbon species. Attempting numerical simulations of combustion of real fuels with all of the hydrocarbon species included is highly unrealistic. Thus, a surrogate model approach is generally adopted, which involves choosing a few representative hydrocarbon species whose overall behavior mimics the characteristics of the target fuel. The present study proposes surrogate models for the nine fuels for advanced combustion engines (FACE) that have been developed for studying low-emission, high-efficiency advanced diesel engine concepts. The surrogate compositions for the fuels are arrived at by simulating their distillation profiles to within a maximum absolute error of 4% using a discrete multi-component (DMC) fuel model that has been incorporated in the multi-dimensional computational fluid dynamics (CFD) code, KIVA-ERC-CHEMKIN. The simulated surrogate compositions cover the range and measured concentrations of the various hydrocarbon classes present in the fuels. The fidelity of the surrogate fuel models is judged on the basis of matching their specific gravity, lower heating value, hydrogen/carbon (H/C) ratio, cetane number, and cetane index with the measured data for all nine FACE fuels.

  9. Thermodynamic Advantages of Low Temperature Combustion Engines Including

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

    the Use of Low Heat Rejection Concepts | Department of Energy Advantages of Low Temperature Combustion Engines Including the Use of Low Heat Rejection Concepts Thermodynamic Advantages of Low Temperature Combustion Engines Including the Use of Low Heat Rejection Concepts Thermodynamic cycle simulation was used to evaluate low temperature combustion in systematic and sequential fashion to base engine design. deer10_caton.pdf (462.23 KB) More Documents & Publications Boosted HCCI for High

  10. Vehicle Technologies Office: 2014 Advanced Combustion Engine Annual

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

    Progress Report | Department of Energy Advanced Combustion Engine Annual Progress Report Vehicle Technologies Office: 2014 Advanced Combustion Engine Annual Progress Report The Advanced Combustion Engine research and development (R&D) subprogram within the DOE Vehicle Technologies Office (VTO) provides support and guidance for many cutting-edge automotive technologies under development. Research focuses on addressing critical barriers to commercializing higher efficiency, very low

  11. Vehicle Technologies Office: 2015 Advanced Combustion Engine Annual

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

    Progress Report | Department of Energy Advanced Combustion Engine Annual Progress Report Vehicle Technologies Office: 2015 Advanced Combustion Engine Annual Progress Report The Advanced Combustion Engine research and development (R&D) subprogram within the DOE Vehicle Technologies Office (VTO) provides support and guidance for many cutting-edge automotive technologies under development. Research focuses on addressing critical barriers to commercializing higher efficiency, very low

  12. 2013 Annual Merit Review Results Report - Advanced Combustion Engine

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

    Technologies | Department of Energy Advanced Combustion Engine Technologies 2013 Annual Merit Review Results Report - Advanced Combustion Engine Technologies Merit review of DOE Vehicle Technologies research activities 2013_amr_04.pdf (9.46 MB) More Documents & Publications 2010 DOE EERE Vehicle Technologies Program Merit Review - Fuels Technologies 2012 Annual Merit Review Results Report - Advanced Combustion Engine Technologies 2011 Annual Merit Review Results Report - Advanced

  13. FY2009 Annual Progress Report for Advanced Combustion Engine Research and Development

    SciTech Connect (OSTI)

    none,

    2009-12-01

    Fiscal Year 2009 Annual Progress Report for the Advanced Combustion Engine Research and Development (R&D) subprogram. The Advanced Combustion Engine R&D subprogram supports the mission of the VTP program by removing the critical technical barriers to commercialization of advanced internal combustion engines (ICEs) for passenger and commercial vehicles that meet future Federal emissions regulations. Dramatically improving the efficiency of ICEs and enabling their introduction in conventional as well as hybrid electric vehicles is the most promising and cost-effective approach to increasing vehicle fuel economy over the next 30 years.

  14. Oxygen-Enriched Combustion for Military Diesel Engine Generators...

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

    (196.85 KB) More Documents & Publications Development Methodology for Power-Dense Military Diesel Engine Oxygen-Enriched Combustion Emission Control Strategy for Downsized ...

  15. Optimization of Direct-Injection H2 Combustion Engine Performance...

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

    Efficiency, and Emissions Optimization of Direct-Injection H2 Combustion Engine Performance, Efficiency, and Emissions 2011 DOE Hydrogen and Fuel Cells Program, and Vehicle ...

  16. 2010 Advanced Combustion Engine R&D Report

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

    annual progress report 2010 Advanced Combustion Engine Research and Development Approved by Gurpreet Singh Team Leader, Advanced Combustion Engine R&D Vehicle Technologies Program FY 2010 Progress rePort For AdvAnced combustion engine reseArcH And deveLoPment Energy Efficiency and Renewable Energy Vehicle Technologies Program U.S. Department of Energy 1000 Independence Avenue, S.W. Washington, D.C. 20585-0121 December 2010 DOE-ACE-2010AR ii Advanced Combustion Engine R&D FY 2010 Annual

  17. Co-Optima Initiative Fuels Combustion Engine Efficiency | Department of

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

    Energy Co-Optima Initiative Fuels Combustion Engine Efficiency Co-Optima Initiative Fuels Combustion Engine Efficiency August 2, 2016 - 11:15am Addthis As part of the Co-Optimization of Fuels & Engines initiative, researchers are exploring synergies among new bio-based fuels, engines, powertrains, and fueling infrastructure. | Image by Loren Stacks, Sandia National Laboratories. As part of the Co-Optimization of Fuels & Engines initiative, researchers are exploring synergies among

  18. 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. ace_35_patton.pdf (970.31 KB) 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)

  19. FY2010 Annual Progress Report for Advanced Combustion Engine Research and Development

    SciTech Connect (OSTI)

    Singh, Gurpreet

    2010-12-01

    The Advanced Combustion Engine R&D subprogram supports the mission of the Vehicle Technologies Program by removing the critical technical barriers to commercialization of advanced internal combustion engines (ICEs) for passenger and commercial vehicles that meet future Federal emissions regulations. Dramatically improving the efficiency of ICEs and enabling their introduction in conventional as well as hybrid electric vehicles is the most promising and cost-effective approach to increasing vehicle fuel economy over the next 30 years.

  20. NREL: Transportation Research - Fuel Combustion and Engine Performance

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

    Fuel Combustion and Engine Performance Photo of a gasoline direct injection piston with injector. NREL studies the effects of new fuel properties on performance and emissions in advanced engine technologies. Photo by Dennis Schroeder, NREL NREL's combustion research and development bridges fundamental chemical kinetics and applied engine research to investigate how new engine technologies can be co-developed with fuels and lubricants to maximize energy-efficient vehicle performance. Through

  1. Combustion characterization of methylal in reciprocating engines

    SciTech Connect (OSTI)

    Dodge, L.; Naegeli, D.

    1994-06-01

    Methylal, CH{sub 3}OCH{sub 2}OCH{sub 3}, also known as dimethoxy-methane, is unique among oxygenates in that it has a low autoignition temperature, no carbon-carbon bonds, and is soluble in middle distillate fuels. Because of these properties, methylal has been shown to be a favorable fuel additive for reducing smoke in diesel engines. Recent measurements of ignition delay times indicate that methylal has a cetane number in the range of 45-50, which is compatible with diesel fuels. Engine tests have shown that adding methylal to diesel fuel significantly reduces smoke emissions. Gaseous emissions and combustion efficiencies obtained with methylal/diesel fuel blends remain essentially the same as those measured using neat diesel fuel. Lubricity measurements of methylal/diesel fuel blends with a ball on cylinder lubrication evaluator (BOCLE) show that methylal improves the lubricity of diesel fuel. Even though additions of methylal lower the fuel viscosity, the results of the BOCLE tests indicate that the methylal/diesel fuel blends cause less pump wear than neat diesel fuel. The one drawback is that methylal has a low boiling point (42{degrees}C) and a relatively high vapor pressure. As a result, it lowers the flash point of diesel fuel and causes a potential fuel tank flammability hazard. One solution to this increased volatility is to make polyoxymethylenes with the general formula of CH{sub 3}O(CH{sub 2}O){sub x}CH{sub 3} where x > 2. The molecules are similar to methylal, but have higher molecular weights and thus higher viscosities and substantially lower vapor pressures. Therefore, their flash points will be compatible with regular diesel fuel. The polyoxymethylenes are expected to have combustion properties similar to methylal. It is theorized that by analogy with hydrocarbons, the ignition quality (i.e., cetane number) of the polyoxymethylenes will be better than that of methylal.

  2. Compression ignition engine having fuel system for non-sooting combustion and method

    DOE Patents [OSTI]

    Bazyn, Timothy; Gehrke, Christopher

    2014-10-28

    A direct injection compression ignition internal combustion engine includes a fuel system having a nozzle extending into a cylinder of the engine and a plurality of spray orifices formed in the nozzle. Each of the spray orifices has an inner diameter dimension of about 0.09 mm or less, and define inter-orifice angles between adjacent spray orifice center axes of about 36.degree. or greater such that spray plumes of injected fuel from each of the spray orifices combust within the cylinder according to a non-sooting lifted flame and gas entrainment combustion pattern. Related methodology is also disclosed.

  3. DOE - Office of Legacy Management -- Combustion Engineering Co - CT 03

    Office of Legacy Management (LM)

    Combustion Engineering Co - CT 03 FUSRAP Considered Sites Site: Combustion Engineering, CT (CT.03 ) Cleanup in progress by U.S. Army Corps of Engineers. Designated Name: Combustion Engineering Alternate Name: CE Site Asea Brown Boveri S1C Prototype CT.03-1 Location: 1000 Prospect Hill Road, Windsor, Connecticut CT.03-2 Evaluation Year: 1994 CT.03-1 Site Operations: Used natural, enriched, and highly enriched uranium to make fuel assemblies for the AEC. CT.03-3 CT.03-4 Site Disposition: Eligible

  4. Student Trainee (Engineering)- Intern

    Broader source: Energy.gov [DOE]

    The purpose of the Pathways Intern Employment Program is to provide the intern with exposure to public service, enhance educational experience, and support educational goals. The program is...

  5. Fuel Effects on Advanced Combustion: Heavy-Duty Optical-Engine...

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

    Advanced Combustion: Heavy-Duty Optical-Engine Research Fuel Effects on Advanced Combustion: Heavy-Duty Optical-Engine Research 2009 DOE Hydrogen Program and Vehicle Technologies ...

  6. Improved Solvers for Advanced Engine Combustion Simulation

    Broader source: Energy.gov [DOE]

    Document:  ace076_mcnenly_2013_o.pdfTechnology Area: Advanced Combustion; Combustion and Emissions ControlPresenter: Matthew McNenlyPresenting Organization: Lawrence Livermore National Laboratory ...

  7. Optimization of Direct-Injection H2 Combustion Engine Performance,

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

    Efficiency, and Emissions | Department of Energy 2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation ace009_wallner_2011_o.pdf (1.48 MB) More Documents & Publications Optimization of Direct-Injection H2 Combustion Engine Performance, Efficiency, and Emissions Enabling High Efficiency Ethanol Engines Comparison of Conventional Diesel and Reactivity Controlled Compression Ignition (RCCI) Combustion in a Light-Duty Engine

  8. Characterization of Particulate Emissions from GDI Engine Combustion with

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

    Alcohol-blended Fuels | Department of Energy Particulate Emissions from GDI Engine Combustion with Alcohol-blended Fuels Characterization of Particulate Emissions from GDI Engine Combustion with Alcohol-blended Fuels Analysis showed that gasoline direct injection engine particulates from alcohol-blended fuels are significantly different in morphology and nanostructures p-19_seong.pdf (856.46 KB) More Documents & Publications Vehicle Technologies Office Merit Review 2014: Fuel and

  9. 2012 Annual Merit Review Results Report - Advanced Combustion Engine Technologies

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

    -1 4. Advanced Combustion Engine Technologies The Advanced Combustion Engine R&D subprogram of the U.S. Department of Energy's Vehicle Technologies Program (VTP) is improving the fuel economy of passenger vehicles (cars and light trucks) and commercial vehicles (medium-duty and commercial trucks) by increasing the efficiency of the engines that power them. Work is done in collaboration with industry, national laboratories, and universities, as well as in conjunction with the U.S. DRIVE

  10. Characterizing dilute combustion instabilities in a multi-cylinder spark-ignited engine using symbolic analysis

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

    Daw, C. Stuart; Finney, Charles E. A.; Kaul, Brian C.; Edwards, Kevin Dean; Wagner, Robert M.

    2014-12-29

    Spark-ignited internal combustion engines have evolved considerably in recent years in response to increasingly stringent regulations for emissions and fuel-economy. One new advanced engine strategy utilizes high levels of exhaust gas recirculation (EGR) to reduce combustion temperatures, thereby increasing thermodynamic efficiency and reducing nitrogen oxide emissions. While this strategy can be highly effective, it also poses major control and design challenges due to the large combustion oscillations that develop at sufficiently high EGR levels. Previous research has documented that combustion instabilities can propagate between successive engine cycles in individual cylinders via self-generated feedback of reactive species and thermal energy inmore » the retained residual exhaust gases. In this work, we use symbolic analysis to characterize multi-cylinder combustion oscillations in an experimental engine operating with external EGR. At low levels of EGR, intra-cylinder oscillations are clearly visible and appear to be associated with brief, intermittent coupling among cylinders. As EGR is increased further, a point is reached where all four cylinders lock almost completely in phase and alternate simultaneously between two distinct bi-stable combustion states. From a practical perspective, it is important to understand the causes of this phenomenon and develop diagnostics that might be applied to ameliorate its effects. We demonstrate here that two approaches for symbolizing the engine combustion measurements can provide useful probes for characterizing these instabilities.« less

  11. Characterizing dilute combustion instabilities in a multi-cylinder spark-ignited engine using symbolic analysis

    SciTech Connect (OSTI)

    Daw, C. Stuart; Finney, Charles E. A.; Kaul, Brian C.; Edwards, Kevin Dean; Wagner, Robert M.

    2014-12-29

    Spark-ignited internal combustion engines have evolved considerably in recent years in response to increasingly stringent regulations for emissions and fuel-economy. One new advanced engine strategy utilizes high levels of exhaust gas recirculation (EGR) to reduce combustion temperatures, thereby increasing thermodynamic efficiency and reducing nitrogen oxide emissions. While this strategy can be highly effective, it also poses major control and design challenges due to the large combustion oscillations that develop at sufficiently high EGR levels. Previous research has documented that combustion instabilities can propagate between successive engine cycles in individual cylinders via self-generated feedback of reactive species and thermal energy in the retained residual exhaust gases. In this work, we use symbolic analysis to characterize multi-cylinder combustion oscillations in an experimental engine operating with external EGR. At low levels of EGR, intra-cylinder oscillations are clearly visible and appear to be associated with brief, intermittent coupling among cylinders. As EGR is increased further, a point is reached where all four cylinders lock almost completely in phase and alternate simultaneously between two distinct bi-stable combustion states. From a practical perspective, it is important to understand the causes of this phenomenon and develop diagnostics that might be applied to ameliorate its effects. We demonstrate here that two approaches for symbolizing the engine combustion measurements can provide useful probes for characterizing these instabilities.

  12. Method of controlling cyclic variation in engine combustion

    DOE Patents [OSTI]

    Davis, L.I. Jr.; Daw, C.S.; Feldkamp, L.A.; Hoard, J.W.; Yuan, F.; Connolly, F.T.

    1999-07-13

    Cyclic variation in combustion of a lean burning engine is reduced by detecting an engine combustion event output such as torsional acceleration in a cylinder (i) at a combustion event (k), using the detected acceleration to predict a target acceleration for the cylinder at the next combustion event (k+1), modifying the target output by a correction term that is inversely proportional to the average phase of the combustion event output of cylinder (i) and calculating a control output such as fuel pulse width or spark timing necessary to achieve the target acceleration for cylinder (i) at combustion event (k+1) based on anti-correlation with the detected acceleration and spill-over effects from fueling. 27 figs.

  13. Method of controlling cyclic variation in engine combustion

    DOE Patents [OSTI]

    Davis, Jr., Leighton Ira; Daw, Charles Stuart; Feldkamp, Lee Albert; Hoard, John William; Yuan, Fumin; Connolly, Francis Thomas

    1999-01-01

    Cyclic variation in combustion of a lean burning engine is reduced by detecting an engine combustion event output such as torsional acceleration in a cylinder (i) at a combustion event (k), using the detected acceleration to predict a target acceleration for the cylinder at the next combustion event (k+1), modifying the target output by a correction term that is inversely proportional to the average phase of the combustion event output of cylinder (i) and calculating a control output such as fuel pulse width or spark timing necessary to achieve the target acceleration for cylinder (i) at combustion event (k+1) based on anti-correlation with the detected acceleration and spill-over effects from fueling.

  14. Solid fuel combustion system for gas turbine engine

    DOE Patents [OSTI]

    Wilkes, Colin; Mongia, Hukam C.

    1993-01-01

    A solid fuel, pressurized fluidized bed combustion system for a gas turbine engine includes a carbonizer outside of the engine for gasifying coal to a low Btu fuel gas in a first fraction of compressor discharge, a pressurized fluidized bed outside of the engine for combusting the char residue from the carbonizer in a second fraction of compressor discharge to produce low temperature vitiated air, and a fuel-rich, fuel-lean staged topping combustor inside the engine in a compressed air plenum thereof. Diversion of less than 100% of compressor discharge outside the engine minimizes the expense of fabricating and maintaining conduits for transferring high pressure and high temperature gas and incorporation of the topping combustor in the compressed air plenum of the engine minimizes the expense of modifying otherwise conventional gas turbine engines for solid fuel, pressurized fluidized bed combustion.

  15. Overview of Engine Combustion Research at Sandia National Laboratories

    SciTech Connect (OSTI)

    Robert W. Carling; Gurpreet Singh

    1999-04-26

    The objectives of this paper are to describe the ongoing projects in diesel engine combustion research at Sandia National Laboratories' Combustion Research Facility and to detail recent experimental results. The approach we are employing is to assemble experimental hardware that mimic realistic engine geometries while enabling optical access. For example, we are using multi-cylinder engine heads or one-cylinder versions of production heads mated to one-cylinder engine blocks. Optical access is then obtained through a periscope in an exhaust valve, quartz windows in the piston crown, windows in spacer plates just below the head, or quartz cylinder liners. We have three diesel engine experiments supported by the Department of Energy, Office of Heavy Vehicle Technologies: a one-cylinder version of a Cummins heavy-duty engine, a diesel simulation facility, and a one-cylinder Caterpillar engine to evaluate combustion of alternative diesel fuels.

  16. Advanced Combustion Engine R&D and Fuels Technology Merit Review...

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

    Advanced Combustion Engine R&D and Fuels Technology Merit Review Advanced Combustion Engine R&D and Fuels Technology Merit Review Merit review of DOE FCVT combustion, emission ...

  17. Technical Staff, Engine Combustion, Sandia National Laboratories | National

    National Nuclear Security Administration (NNSA)

    Nuclear Security Administration | (NNSA) Technical Staff, Engine Combustion, Sandia National Laboratories Charles Mueller Charles Mueller August 2009 Harry L. Horning Memorial Award Chuck Mueller, a member of Sandia National Laboratories technical staff, has received the 2008 Harry L. Horning Memorial Award for his work on the paper, "Early Direct-Injection, Low-Temperature Combustion of Diesel Fuel in an Optical Engine Utilizing a 15-Hole, Dual-Row, Narrow-Included-Angle Nozzle."

  18. Combustion Stability in Complex Engineering Flows | Argonne Leadership

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

    Computing Facility NOx prediction in a swirl-type DLN combustor NOx prediction in a swirl-type DLN combustor: (left) zoom near one-of-six swirling premixers, (right) several axial locations. NOx accumulates in the low-velocity region at the center of the swirling vortex. Virtual testing enables engineers to design next-generation, low-emission combustion systems. Lee Shunn, Cascade Technologies; Shoreh Hajiloo, GE Global Research Combustion Stability in Complex Engineering Flows PI Name: Lee

  19. Boosting Small Engines to High Performance- Boosting Systems and Combustion Development Methodology

    Broader source: Energy.gov [DOE]

    Overview on combustion approaches and challenges for smaller boosted engines to improve vehicle fuel economy, particularly downsizing gasoline engines

  20. Overview of the DOE Advanced Combustion Engine R&D Program

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

    Combustion Engine R&D Program Gurpreet Singh, Program Manager Advanced Combustion Engine R&D Team Members: Ken Howden, Roland Gravel, and Leo Breton June 16, 2014 VEHICLE TECHNOLOGIES OFFICE 2 Outline  State of technology today for ICE  Overview of the Advanced Combustion Engine R&D Program  Combustion and Emission Control Subprogram  Engine Combustion Research * Low Temperature Combustion * Predictive Simulation for ICE Design  Emission Control R&D  High

  1. Beijing Haohua Rivers International Water Engineering Consulting...

    Open Energy Info (EERE)

    Haohua Rivers International Water Engineering Consulting Co Ltd Jump to: navigation, search Name: Beijing Haohua Rivers International Water Engineering Consulting Co.Ltd. Place:...

  2. Starting procedure for internal combustion vessels

    DOE Patents [OSTI]

    Harris, Harry A.

    1978-09-26

    A vertical vessel, having a low bed of broken material, having included combustible material, is initially ignited by a plurality of ignitors spaced over the surface of the bed, by adding fresh, broken material onto the bed to buildup the bed to its operating depth and then passing a combustible mixture of gas upwardly through the material, at a rate to prevent back-firing of the gas, while air and recycled gas is passed through the bed to thereby heat the material and commence the desired laterally uniform combustion in the bed. The procedure permits precise control of the air and gaseous fuel mixtures and material rates, and permits the use of the process equipment designed for continuous operation of the vessel.

  3. Engine combustion control at low loads via fuel reactivity stratification

    DOE Patents [OSTI]

    Reitz, Rolf Deneys; Hanson, Reed M; Splitter, Derek A; Kokjohn, Sage L

    2014-10-07

    A compression ignition (diesel) engine uses two or more fuel charges during a combustion cycle, with the fuel charges having two or more reactivities (e.g., different cetane numbers), in order to control the timing and duration of combustion. By appropriately choosing the reactivities of the charges, their relative amounts, and their timing, combustion can be tailored to achieve optimal power output (and thus fuel efficiency), at controlled temperatures (and thus controlled NOx), and with controlled equivalence ratios (and thus controlled soot). At low load and no load (idling) conditions, the aforementioned results are attained by restricting airflow to the combustion chamber during the intake stroke (as by throttling the incoming air at or prior to the combustion chamber's intake port) so that the cylinder air pressure is below ambient pressure at the start of the compression stroke.

  4. Advanced concepts for controlled combustion in engines. Final report

    SciTech Connect (OSTI)

    Oppenheim, A.K.

    1991-12-15

    Studies carried out at the University of California, Berkeley, over a period of four years were concerned with fluid mechanical properties of turbulent pulsed jet plumes - systems that are of particular relevance to the initiation and control of combustion in engines. The eventual purpose of this program was to provide a rational background for a fundamental refinement of stratified charge diesel engines - the development of a combustion system where the formation of pollutants is minimized, fuel economy is maximized, while fuel tolerance is optimized. The results demonstrated that this goal is attainable by means of appropriate Pulsed Jet Combustion (PJC) generators. The exothermic process of combustion is executed thereby in the form of a fireball taking place in a stratified charge generated by turbulent plumes of a PJC system.

  5. Dynamic instabilities in spark-ignited combustion engines with high exhaust gas recirculation

    SciTech Connect (OSTI)

    Daw, C Stuart; FINNEY, Charles E A

    2011-01-01

    We propose a cycle-resolved dynamic model for combustion instabilities in spark-ignition engines operating with high levels of exhaust gas recirculation (EGR). High EGR is important for increasing fuel efficiency and implementing advanced low-emission combustion modes such as homogenous charge compression ignition (HCCI). We account for the complex combustion response to cycle-to-cycle feedback by utilizing a global probability distribution that describes the pre-spark state of in-cylinder fuel mixing. The proposed model does a good job of simulating combustion instabilities observed in both lean-fueling engine experiments and in experiments where nitrogen dilution is used to simulate some of the combustion inhibition of EGR. When used to simulate high internal EGR operation, the model exhibits a range of global bifurcations and chaos that appear to be very robust. We use the model to show that it should be possible to reduce high EGR combustion instabilities by switching from internal to external EGR. We also explain why it might be helpful to deliberately stratify the fuel in the pre-spark gas mixture. It might be possible to extend the simple approach used in this model to other chemical reaction systems with spatial inhomogeneity.

  6. Path planning during combustion mode switch

    DOE Patents [OSTI]

    Jiang, Li; Ravi, Nikhil

    2015-12-29

    Systems and methods are provided for transitioning between a first combustion mode and a second combustion mode in an internal combustion engine. A current operating point of the engine is identified and a target operating point for the internal combustion engine in the second combustion mode is also determined. A predefined optimized transition operating point is selected from memory. While operating in the first combustion mode, one or more engine actuator settings are adjusted to cause the operating point of the internal combustion engine to approach the selected optimized transition operating point. When the engine is operating at the selected optimized transition operating point, the combustion mode is switched from the first combustion mode to the second combustion mode. While operating in the second combustion mode, one or more engine actuator settings are adjusted to cause the operating point of the internal combustion to approach the target operating point.

  7. High Efficiency Clean Combustion for Heavy-Duty Engine | Department of

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

    Energy Explore advancements in engine combustion systems using high-efficiency clean combustion (HECC) techniques to minimize engine-out emissions while optimizing fuel economy. deer09_zhang.pdf (656.54 KB) More Documents & Publications Heavy Truck Engine Development & HECC High Efficiency Clean Combustion for Heavy-Duty Engine Heavy-Duty Engine Combustion Optimization for High Thermal Efficiency Targeting EPA 2010 Emissions

  8. 54.5 MPG and Beyond: Speeding Up Development of Advanced Combustion Engines

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

    | Department of Energy Speeding Up Development of Advanced Combustion Engines 54.5 MPG and Beyond: Speeding Up Development of Advanced Combustion Engines December 10, 2012 - 1:00pm Addthis Argonne engineer Steve Ciatti works on an engine in Argonne's Engine Research Facility -- a facility where researchers can study in-cylinder combustion and emissions under realistic operating conditions. | Photo courtesy of Argonne National Laboratory. Argonne engineer Steve Ciatti works on an engine in

  9. Nanoparticle Emissions from Internal Combustion Engines | Department...

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

    More Documents & Publications Gasoline Vehicle Exhuast Particle Sampling Study Evaluation of the European PMP Methodologies Using Chassis Dynamometer and On-road Testing of ...

  10. Internal Combustion Engine Basics | Department of Energy

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

    Along with gasoline or diesel, they can also utilize renewable or alternative fuels (e.g., natural gas, propane, biodiesel, or ethanol). They can also be combined with hybrid ...