With Means To Provide Additional Motive Fluid For Motor Patents (Class 60/606)
  • Patent number: 7032375
    Abstract: In the disclosed secondary air supply system, an on-off valve (13) is driven by the discharge pressure of an air pump (12). A diaphragm chamber (44) is arranged in the neighborhood of a discharge outlet (54), and a part of the discharge air flows directly into the diaphragm chamber (44). Thus, the on-off valve (13) is positively operated even at high places with low atmospheric pressure and has a fast open/close response. As an electromagnetic actuator is not used to drive the on-off valve (13), the voltage supplied to the air pump (12) (DC motor (29)) does not drop inconveniently, and at the same time, the cost is reduced. Further, the number of the lead wires (65) is reduced.
    Type: Grant
    Filed: February 20, 2004
    Date of Patent: April 25, 2006
    Assignee: Denso Corporation
    Inventors: Kunihiro Tsuzuki, Shinichi Yokoyama
  • Patent number: 6912852
    Abstract: A system for a turbocharged internal combustion engine includes an engine having a charge inlet connected to the compressor outlet and an exhaust outlet connected to the turbine inlet for driving the turbocharger with hot exhaust gas and supplying compressed air to the engine for combustion. A bypass duct connects the compressor outlet to the turbine inlet for diverting a portion of the compressed air around the engine to the turbine inlet or exhaust. A control device selectively controls the diversion of air. An operating method for the system involves controlling peak cylinder firing pressure and/or maximum turbine inlet temperature, optionally with exhaust NOx and smoke in order to limit these variables to acceptable limits with a minimum of operational limitations.
    Type: Grant
    Filed: January 22, 2004
    Date of Patent: July 5, 2005
    Assignee: Electro-Motive Diesel, Inc.
    Inventors: Paul Gottemoller, Ramesh B. Poola, David Corba, John R. Zagone
  • Patent number: 6895745
    Abstract: A system and device for providing secondary combustion for regeneration of catalyst in a catalytic converter (24) and/or for regeneration of a particulate trap (21) is provided. The secondary combustion takes place in the exducer chamber (13) of a turbine of a turbocharger (2), and generates heat for bringing a catalyst up to peak oxidation or reduction temperature, for regeneration of a catalyst, and incineration of particulates in a trap. The system takes advantage of heat and turbulence in the exducer chamber for promoting fuel/air mixture and for simplifying the amount of parts needed to incorporate a secondary combustion means into a turbocharger equipped primary combustion system (1).
    Type: Grant
    Filed: April 4, 2003
    Date of Patent: May 24, 2005
    Assignee: BorgWarner Inc.
    Inventor: Steve Roby
  • Patent number: 6883323
    Abstract: A method and an apparatus for determining the performance of a secondary air charging system for an internal combustion engine in order to determine the amount of secondary air supplied in the secondary air charging system. This is achieved by measuring the heat generated by the compression of the secondary air with temperature sensors. Insofar as the secondary air charging system is powered by a turbine arranged in parallel with the throttle valve in the intake tract, the measured temperature value for the compressor can be compared with a reduction in temperature of the intake air behind the turbine. Reliable information concerning the amount of secondary air supplied can be determined by simple sensors, thereby obviating the need for an air-mass sensor which is expensive to produce and sensitive to contamination.
    Type: Grant
    Filed: June 23, 2003
    Date of Patent: April 26, 2005
    Assignee: Mann & Hummel GmbH
    Inventor: Karl-Ernst Hummel
  • Patent number: 6883322
    Abstract: A system and method are provided to control a turbocharger by fluidic control of engine exhaust by steering the same. The system and method include fluidic control of engine exhaust flow directed toward an expander section of the turbocharger, wherein one of position or velocity is effectively varied by a small stream of a fluid in fluid communication with the exhaust gas flow thereby varying the drive of a compressor section of the turbocharger.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: April 26, 2005
    Assignee: General Electric Company
    Inventors: Michael Kent Cueman, Nirm Velumylum Nirmalan
  • Patent number: 6883308
    Abstract: Vehicle powered by a combustion engine having an exhaust pipe, a turbine housing connected to the exhaust pipe which exhibits an inlet opening, an outlet opening, a chamber located between the inlet opening and outlet opening in which a turbine wheel is rotatably arranged on a rotational shaft which is mounted in bearings in the housing and extends through a through-hole in the chamber. An injector is provided for injecting urea while the combustion engine is in a predetermined operating conditions into exhaust gases generated by the combustion engine.
    Type: Grant
    Filed: December 16, 2002
    Date of Patent: April 26, 2005
    Assignee: Volvo Lastvagnar AB
    Inventors: Lucan Megas, Lennart Zander, Lennart Andersson, Kristin Holmqvist, Mats Holmqvist
  • Patent number: 6862885
    Abstract: A supercharger injects air into the engine exhaust manifold of an engine to dramatically improve turbocharger boost at low engine speeds, while cooling the gases in the exhaust manifold to reduce NOx formation. The injected air additionally reduces other exhaust emissions through secondary combustion, allowing the air/fuel ratio to be controlled closer to the stoichiometric ratio for improved thermodynamic efficiency. The engine is particularly well suited to high torque, low speed applications, such as a vehicle hydrostatic drive in which the engine is connected to drive a variable capacity hydrostatic pump at a low and substantially constant speed.
    Type: Grant
    Filed: November 20, 2003
    Date of Patent: March 8, 2005
    Assignee: Super Drive, Inc.
    Inventor: Herman R. Mitchell
  • Patent number: 6813887
    Abstract: An exhaust-gas turbocharger for an internal combustion engine includes an exhaust-gas turbine in the exhaust section and a compressor in the intake tract. The compressor includes a compressor impeller in an inflow passage in the compressor housing. Furthermore, there is an auxiliary-air feed device, which is assigned to the compressor region and has an auxiliary-air passage, in the compressor housing for supplying auxiliary air, which can be introduced via an injection opening in the wall of the inflow passage of the compressor into the flow-facing region of the compressor impeller.
    Type: Grant
    Filed: November 26, 2002
    Date of Patent: November 9, 2004
    Assignee: DaimlerChrysler AG
    Inventors: Siegfried Sumser, Aloysius Schunk, Peter Fledersbacher
  • Publication number: 20040168440
    Abstract: In the disclosed secondary air supply system, an on-off valve (13) is driven by the discharge pressure of an air pump (12). A diaphragm chamber (44) is arranged in the neighborhood of a discharge outlet (54), and a part of the discharge air flows directly into the diaphragm chamber (44). Thus, the on-off valve (13) is positively operated even at high places with low atmospheric pressure and has a fast open/close response. As an electromagnetic actuator is not used to drive the on-off valve (13), the voltage supplied to the air pump (12) (DC motor (29)) does not drop inconveniently, and at the same time, the cost is reduced. Further, the number of the lead wires (65) is reduced.
    Type: Application
    Filed: February 20, 2004
    Publication date: September 2, 2004
    Applicant: DENSO CORPORATION
    Inventors: Kunihiro Tsuzuki, Shinichi Yokoyama
  • Publication number: 20040094117
    Abstract: A valve system for an engine is provided. The valve system includes a cylinder head that defines an intake passageway, an exhaust passageway, and an auxiliary passageway. The auxiliary passageway includes a first connection with the intake passageway and a second connection with the exhaust passageway. A control valve is disposed in the auxiliary passageway. The control valve is moveable between a first position where the control valve blocks the first connection between the auxiliary passageway and the intake passageway and a second position where control valve blocks the second connection between the auxiliary passageway and the exhaust passageway.
    Type: Application
    Filed: November 19, 2002
    Publication date: May 20, 2004
    Applicant: Caterpillar, Inc.
    Inventors: Stanley Kevin Widener, David Pratt Branyon, Barry Edward Westmoreland
  • Patent number: 6729124
    Abstract: A method and an arrangement serve to operate an internal combustion engine equipped with an exhaust-gas turbocharger. An after-injection takes place with the overlapment of the opening angle of the inlet and outlet valves of a cylinder. The after-injection leads to an air/fuel mixture in the exhaust-gas system which is combustible. This mixture is combusted by driving an additional ignition device in the exhaust-gas system.
    Type: Grant
    Filed: August 16, 2002
    Date of Patent: May 4, 2004
    Assignee: Robert Bosch GmbH
    Inventors: Michael Baeuerle, Carsten Reisinger, Guido Porten
  • Publication number: 20040055298
    Abstract: 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.
    Type: Application
    Filed: September 9, 2003
    Publication date: March 25, 2004
    Applicant: The Regents of the University of California
    Inventors: Larry E. Fischer, Brian L. Anderson, Kevin C. O'Brien
  • Publication number: 20030213242
    Abstract: Device (1) for the recovery of thermal energy from a first gas flow (11) from an internal combustion engine (10), the device being designed for the transfer of thermal energy from the first gas flow (11) to a second gas flow (12). The device includes a body (2) having a zigzag-shaped structure, which forms ducts for said gas flows, and the body (2) is designed for the transfer of heat between the first gas flow (11) and the second gas flow (12).
    Type: Application
    Filed: April 4, 2003
    Publication date: November 20, 2003
    Applicant: VOLVO TEKNISK UTVECKLING AB
    Inventor: Edward Jobson
  • Patent number: 6637204
    Abstract: In a two-stage concept for supercharging of internal combustion engines, in which the first stage is performed by an exhaust-gas turbocharger and the second stage by an electrically driven compressor, the compressor is also used to provide the secondary air used for the heating of a catalytic converter. In this manner, the catalytic converter quickly reaches an efficient operating temperature.
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: October 28, 2003
    Assignee: Siemens Aktiengesellschaft
    Inventors: Dietmar Ellmer, Jörg Neugärtner
  • Patent number: 6622486
    Abstract: An arrangement for feeding air in a supercharged piston engine includes at least a supercharging device arranged for feeding air to more than one cylinder, an air chamber in connection with the supercharging device, and a channel arrangement leading from the air chamber to each cylinder of the piston engine. A resonator system is in connection with the air chamber for attenuating the pressure pulsation in the air chamber. In a method of operating the supercharged piston engine, combustion air is fed by means of the supercharging device at a pressure higher than ambient pressure into the air chamber, air is led from the air chamber to the cylinders through the channel arrangements, and a pressure pulsation is formed in the air chamber, which pulsation is half-wavelength shifted from the pulsation in the air chamber, appearing at frequencies at or below the third harmonic of the rotational speed of the engine.
    Type: Grant
    Filed: November 7, 2001
    Date of Patent: September 23, 2003
    Assignee: Wartsila Technology Oy AB
    Inventor: Arto Järvi
  • Patent number: 6601388
    Abstract: A turbocharger for an internal combustion engine, particularly suitable for use in a work machine, is provided with a turbine having a low pressure region of minimum static pressure. A compressor has a high pressure region of maximum dynamic pressure. A conduit fluidly interconnects the high pressure region with the low pressure region. A valve is associated with the conduit for opening and closing the conduit. Compressed air or a fuel/air mixture may be bled from the compressor to the turbine over a wider arrange of operating conditions, even at low load operating conditions.
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: August 5, 2003
    Assignee: Caterpillar Inc
    Inventor: John R. Gladden
  • Patent number: 6470864
    Abstract: A turbocharged internal combustion engine assembly with exhaust gas recirculation (EGR) includes an air compressor driven by an exhaust turbine, an EGR line that diverts exhaust gases from an exhaust line leading from the engine to an air intake line leading to the engine from the compressor, and a combustion bypass line that conveys compressed air from the compressor to the exhaust turbine without combustion. A pressure adjusting feature disposed along at least one of the air intake line and the exhaust line maintains the pressure at the turbine inlet below the pressure at the compressor outlet and above the pressure at the air inlet of the engine. Examples of suitable pressure adjusting features include a venturi placed in the air intake line at the second point, a power turbine located along the exhaust line downstream of the exhaust turbine, a split exhaust manifold feeding unequal turbine inlets, and an orifice located along the exhaust line between the EGR line and the bypass line.
    Type: Grant
    Filed: March 27, 2001
    Date of Patent: October 29, 2002
    Assignee: Mack Trucks, Inc.
    Inventors: Charlie C. Kim, Robert Gorman
  • Publication number: 20020148224
    Abstract: An apparatus and method for diagnosing mechanical problems in turbocharged engines. In its preferred embodiment, the apparatus consists of a boot that is coupled to a turbocharge system—preferably at the air inlet thereof. The apparatus further includes a source of air pressure that may be delivered to the turbocharge system, a first pressure gauge to measure the pressure of the air that is being delivered, and a second pressure gauge to measure the pressure of the air within the turbocharge system. Under pressure, and with the engine off, the turbocharge system can be inspected for leaks. In addition, under pressure, the operation of turbocharge system components—such as the wastegate valve/diaphragm and the boost sensor—can also be inspected.
    Type: Application
    Filed: April 13, 2001
    Publication date: October 17, 2002
    Inventor: Ronald Propernick
  • Publication number: 20020144664
    Abstract: A method for forming a water/fuel mixture includes heating a water stream to a temperature of at least about 260° C. (500° F.) and a pressure of at least about 150 psig (10.2 atmospheres gauge) and combining it with a fuel stream, optionally heated to a temperature less than about less than about 177° C. (350° F.). Preferably, the energy for heating the water stream and optionally the fuel stream or, for further heating the water/fuel mixture is recovered from a hot stream generated in a turbine system or diesel engine system. A combustion system suitable for forming the water/fuel mixture includes a combustor, means for heating a stream of water, means for combining the stream of heated water with a fuel stream having a temperature less than about 177° C. (350° F.), to form the mixture and means for directing the mixture to the combustor. Preferably, the combustion system includes a turbine system or a diesel engine.
    Type: Application
    Filed: April 9, 2001
    Publication date: October 10, 2002
    Applicant: Supercritical Combustion Corporation
    Inventor: Charles W. Haldeman
  • Patent number: 6450156
    Abstract: An air compressor for charging an internal combustion engine includes a compressor for blowing compressed air into the intake manifold of the engine and a gas powered turbine for driving the compressor. In a first embodiment, the exhaust from a small gas powered turbine is coupled to the driving turbine of a standard turbocharger. In a second embodiment, the drive shaft of a small gas powered turbine is coupled to the drive shaft of a standard supercharger. In a third embodiment, a compressor turbine having an air intake, a compressed air outlet, and a bleed air outlet is coupled to a small gas powered turbine such that the bleed air outlet supplies the combustor intake of the gas turbine. The gas powered turbine drives the compressor and receives compressed air from the compressor via the bleed outlet. The system provides a constant boost, does not use engine horsepower, is easy to install, and does not need to be coupled to a rotating shaft or the exhaust system of the engine.
    Type: Grant
    Filed: March 12, 2001
    Date of Patent: September 17, 2002
    Inventor: Albert F. Araujo
  • Patent number: 6434940
    Abstract: An air compressor for charging an internal combustion engine includes a compressor for blowing compressed air into the intake manifold of the engine and a fuel powered turbine for driving the compressor. According to a first embodiment, the exhaust from a small gas powered turbine is coupled to the driving turbine of a standard turbocharger. According to a second embodiment, the drive shaft of a small gas powered turbine is coupled to the drive shaft of a standard supercharger. According to a third embodiment, a compressor turbine having an air intake, a compressed air outlet and a bleed air outlet is coupled to a small gas powered turbine such that the bleed air outlet supplies the combustor intake of the gas turbine. The gas powered turbine drives the compressor and receives compressed air from the compressor via the bleed outlet.
    Type: Grant
    Filed: September 14, 2000
    Date of Patent: August 20, 2002
    Inventor: Albert F. Araujo
  • Patent number: 6408625
    Abstract: An electric power generation system is disclosed, which includes a back-up electric power generator driven by a four-cycle internal combustion engine. The engine includes a plurality of reciprocating cylinders each rotatably coupled to a crankshaft, which drives the electric power generator. The engine also includes a compressor along an intake pathway to deliver pressurized air to the cylinders and a turbine along an exhaust pathway to power the compressor when driven by exhaust discharged from the cylinders. The engine is prepared to accept a generator load by increasing boost pressure provided by the compressor. This increase is accomplished by skip-firing the cylinders in a selected pattern, retarding ignition timing for the cylinders, or a combination of these techniques. A unique skip-fueling control pattern is also disclosed.
    Type: Grant
    Filed: January 19, 2000
    Date of Patent: June 25, 2002
    Assignee: Cummins Engine Company, Inc.
    Inventors: Peter V. Woon, Axel O. Zur Loye, Larry J. Brackney, Jay F. Leonard, Eric K. Bradley, Terry M. Vandenberghe, Jacqueline M. Yeager, Julie A. Wagner, Greg A. Moore
  • Patent number: 6401449
    Abstract: A static mixer in the exhaust emission control system of an excess-air-operated combustion engine is formed of an expanded grid with a plurality of openings formed between crossbars. Using an expanded grid achieves both good mixing of the exhaust gas with a reducing agent in a short mixing path and properly aligns the exhaust flow.
    Type: Grant
    Filed: March 3, 2000
    Date of Patent: June 11, 2002
    Assignee: Siemens Aktiengesellschaft
    Inventors: Lothar Hofmann, Wieland Mathes, Udo Klumpp
  • Patent number: 6282898
    Abstract: A spark ignition internal combustion engine having at least one combustion chamber and an operating cycle with induction, compression, power and exhaust phases, said engine having a forced induction system including an intake air compressor supplying intake air to the engine through an inlet tract comprising at least one throttle, at least one intake port and means to introduce metered quantities of fuel into the inlet tract; wherein the compressor is designed to boost intake air pressure by more than one atmosphere throughout that portion of the operating range of the engine which corresponds to significant opening of the at least one throttle, the at least one throttle and at least one intake port conjointly providing sufficient throttling of the intake air flow over said portion of the operating range such as to provide substantially adiabatic expansion of the air delivered by the compressor through the inlet tract, while causing each combustion chamber to be charged with sufficient air/fuel mixture during
    Type: Grant
    Filed: May 13, 1999
    Date of Patent: September 4, 2001
    Inventor: Alberto Solaroli
  • Patent number: 6276139
    Abstract: An arrangement of an internal combustion engine 7 is provided. In a preferred embodiment, the internal combustion engine 7 has at least one variable working and combustion chamber 12. A first passage 14 is provided for delivering air to the combustion chamber 12. A second passage 26 is provided for delivering exhaust from the combustion chamber 12. A turbocharger is provided. The turbocharger has a compressor 18 with an outlet 16 fluidly connected with the first passage 14. The turbocharger has a turbine inlet 28 fluidly connected with the second passage 26. An exhaust 29 of the turbine is connected with a third passage 30. A first bypass passage 70 is provided between the first passage 14 and the third passage 30. A first valve 72 controls the flow of air through the first bypass passage between the first passage 14 and the third passage 30.
    Type: Grant
    Filed: March 16, 2000
    Date of Patent: August 21, 2001
    Assignee: Ford Global Technologies, Inc.
    Inventors: Paul Eduard Moraal, Brendan Patrick Carberry
  • Patent number: 6158219
    Abstract: In a method for turbocharging an internal combustion engine multiple turbochargers are arranged in parallel for supplying turbocharged air to the cylinders of the internal combustion engine via a valve device controlling distribution of the turbocharged air to the cylinders. Each cylinder receives turbocharged air from only one turbo charger at a time and each turbo charger supplies one or more cylinders with turbocharged air. The turbochargers are activated and deactivated according to operational states of the engine. At least one cylinder is switched with the valve device from a supply of turbocharged air of one turbo charger to a supply of turbocharged air of another turbo charger when activating and deactivating the turbochargers.
    Type: Grant
    Filed: May 24, 1999
    Date of Patent: December 12, 2000
    Assignee: Udo Mailander GmbH
    Inventor: Udo Mailander
  • Patent number: 5724813
    Abstract: A bypass system for a diesel engine having a turbocharger, a bypass conduit, a valve and a controller which cooperate to bypass a portion of the combustion air compressed by the turbocharger bypassed to a turbine portion of the turbocharger or to the atmosphere, a controller containing maps based on empirical fixed point data specific to the engine, turbocharger and bypass system responds to signals indicative of changes in atmospheric pressure, inlet manifold pressure and engine speed to control the valve and prevent the turbocharger from surging.
    Type: Grant
    Filed: January 26, 1996
    Date of Patent: March 10, 1998
    Assignee: Caterpillar Inc.
    Inventors: Thomas R. Fenelon, Robert L. Hercey, Gerald A. Hill
  • Patent number: 5673560
    Abstract: A compound engine that includes a gas turbine unit and a piston unit wherein the cycle air for the piston unit is diverted through cooling passages to provide impingement cooling of several areas of the piston unit including the upper cylinder area, the outer and inner surfaces of the exhaust valve and other selected areas of the cylinder head.
    Type: Grant
    Filed: September 13, 1996
    Date of Patent: October 7, 1997
    Assignee: Haeco Partners, Ltd.
    Inventor: Jack I. Hope
  • Patent number: 5653108
    Abstract: A compound engine including a gas turbine unit and a two-stroke uniflow scavenge piston unit having a hollow cylindrical exhaust valve mounted concentrically with an associated piston to form a portion of the combustion chamber within a peripheral wall of the exhaust valve. A double acting exhaust valve actuator is responsive to rotation of the crankshaft and is operatively coupled to the peripheral wall of the hollow cylindrical exhaust valve to produce forces derived directly from rotation of the crankshaft to open and close the exhaust valve. The actuator is a camshaft having two sets of cams which drive a cam follower in response to rotation of the crankshaft.
    Type: Grant
    Filed: October 24, 1994
    Date of Patent: August 5, 1997
    Assignee: Haeco Partners, Ltd.
    Inventor: Jack I. Hope
  • Patent number: 5555730
    Abstract: A compound engine that includes a gas turbine unit and a piston unit wherein a portion of the cycle air for the piston unit is diverted through cooling passages to provide impingement cooling of several areas of the piston unit including the upper cylinder area, the outer and inner surfaces of the exhaust valve and other selected areas of the cylinder head; and there after, the diverted cycle air is reintroduced into the cycle.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: September 17, 1996
    Assignee: Haeco Partners, Ltd.
    Inventor: Jack I. Hope
  • Patent number: 5499407
    Abstract: A display device for illustrating the internal construction of a conventional bedding system displayed on the sales floor of a store is adapted to be superposed on a corner of the displayed bedding system. The novel display device comprises three generally-planar members, one planar member corresponding with the horizontally-disposed body-receiving surface of the mattress and the other two generally-planar members corresponding to the two side surfaces of the bedding system forming the corner on which the display device is superposed. On each of the three generally-planar members of the device is a different picture, each picture portraying the likeness of the individual components of the innerspring assembly of the mattress on which the display device is superposed in such a way that these likeness simulate in two dimensions the structures and arrangement of the corresponding components in the innerspring assembly of the mattress.
    Type: Grant
    Filed: April 13, 1994
    Date of Patent: March 19, 1996
    Assignee: Ohio Mattress Company Licensing and Components Group
    Inventors: Michael J. Atwell, Thomas J. O'Donnell
  • Patent number: 5406796
    Abstract: An exhaust gas turbocharger for a supercharged internal combustion engine, in which the exhaust gas turbocharger includes at least one turbine and at least one compressor and the turbine has a turbine casing with a spiral-shaped flow guide duct, a turbine wheel, an inlet end and an outlet end and the compressor includes a compressor casing with a diffuser duct, an impeller, a pressure side and a suction side and the turbine wheel and the compressor impeller are mounted on a common shaft and the turbine casing and the compressor casing, together with a bearing housing, an exhaust gas turbocharger casing and define a gas conduit connection between the inlet end of the turbine and the pressure side of the compressor with at least one control valve and a gas delivery device arranged in the gas conduit connection for controlling the flow of gas between the inlet end of the turbine and the pressure side of the compressor.
    Type: Grant
    Filed: April 13, 1994
    Date of Patent: April 18, 1995
    Assignee: Mercedes-Benz AG
    Inventors: Hermann Hiereth, Wolfgang Erdmann, Siegfried Sumser
  • Patent number: 5400597
    Abstract: A novel turbocharger is disclosed that includes a compressor wheel and two turbine wheels all mounted on a common drive shaft. Also included is an auxiliary airflow generator to turn one or both turbine wheels. In normal operation, engine exhaust is used to drive the compressor wheel. The improved turbocharger uses two turbine wheels to drive one compressor wheel on one common drive shaft, which invention is intended to eliminate the turbo lag problem inherent in a single turbine turbocharger. In one embodiment, the auxiliary airflow generator spins the turbine wheel at low engine speeds to overcome the problem of turbo lag. In one embodiment, the airflow generator is a blower fan, which directs air through the turbine. In another embodiment, the airflow generator is a vacuum generator, which impels air through the turbine wheel. The two embodiments may be combined such that the blower and the vacuum generator compliment each other in operation.
    Type: Grant
    Filed: June 18, 1993
    Date of Patent: March 28, 1995
    Inventor: Nicholas F. Mirabile
  • Patent number: 5115633
    Abstract: A low-cost, lightweight mobile gas turbine capable of rotating in excess of ne hundred thousand RPM is coupled to a centrifugal air compressor which supplies high volume airflow to a diesel fueled combustion chamber for supplying hot gas to the turbine. Three energy outputs are obtained in the form of pressurized airflow, hot gas flow and large volumes of directed ambient air. The hardware components are essentially state-of-the-art, but their combination for use in multi-purpose military combat operations has not heretofore been known. Such uses include smoke generation, dissemination of infre-red and radar absorbant clouds, decontamination of large masses, hot water supply and air pressure source for mechanics tool operation.
    Type: Grant
    Filed: December 6, 1984
    Date of Patent: May 26, 1992
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: David B. Priser, Robert L. Dow
  • Patent number: 5081836
    Abstract: Heretofore, auxiliary air was directed to a particulate filter assembly of a supercharged diesel engine for proper regeneration thereof by a relatively large auxiliary air compressor, or alternatively from a take-off duct communicating with the inlet manifold of the diesel engine. The former solution often requires a governed compressor for improved efficiency and is expensive, and the latter does not provide satisfactory regeneration throughout the full operating range of the engine.
    Type: Grant
    Filed: December 24, 1990
    Date of Patent: January 21, 1992
    Assignee: Caterpillar Inc.
    Inventors: Aaron L. Smith, Mark E. Feldman
  • Patent number: 5029442
    Abstract: A heat feeding apparatus employable for an internal combustion engine having a supercharger attached thereto, the apparatus including a compressed air bypass passage opening/closing valve disposed midway of a compressed air bypass passage by way of which the outlet of a blower is communicated with the inlet of a turbine in the supercharger and combustion means installed in an inlet region of the turbine, wherein opening or closing of the compressed air bypass passage opening/closing valve and combustion in the combustion means are initiated in dependence on the temperature of a specific kind of medium for which heat exchanging is effected in a heat exchanger, whereby a heat involved in the exhaust gas is transmitted to the heat exchanger in dependence on the demand required by the medium.
    Type: Grant
    Filed: April 11, 1989
    Date of Patent: July 9, 1991
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventor: Toshihiko Nishiyama
  • Patent number: 5018354
    Abstract: The primary zone (1) of the auxiliary combustion chamber has a shape of revolution about an axis (X--X) and is defined by a flame tube (2) which is of cylindrical and/or frustoconical shape, coaxial with said axis (X--X), smooth and devoid of air supply orifices of notable section, and by the chamber inner end (3) which is movable in a direction parallel to said axis (X--X) and cooperates with a fixed seat (13) rigidly connected to the flame tube (2) and separating the primary zone (1) from a cavity (4) so as to constitute, with the chamber inner end (3), throttling means (31) which have a variable passage section and are constituted by a sleeve (10) rigidly connected to a balancing piston (11), which sleeve and piston are coaxial with said axis (X--X), the balancing piston (11) being slidable in a cylindrical bearing surface (12) rigidly connected to the walls of the cavity (4).
    Type: Grant
    Filed: March 16, 1989
    Date of Patent: May 28, 1991
    Assignee: Etat Francais, Represente Par Le Delegue General Pour L'Armament
    Inventors: Jean Melchior, Thierry Andre
  • Patent number: 4936097
    Abstract: A turbocharger-gas turbine for an internal combustion engine operable in multiple modes in a manner reducing heat losses. The turbocharger-gas turbine includes a compressor for delivering compressed air to the internal combustion engine. The compressor has a compressor housing defining an air flow path leading from an air inlet to an air outlet at opposite ends thereof. The air outlet of the compressor is in communication with an air inlet of the internal combustion engine to deliver compressed air thereto. The turbocharger-gas turbine also includes a turbine for driving the compressor to compress air for delivery to the internal combustion engine. The turbine has a turbine housing defining a gas flow path leading from a gas inlet to a gas outlet at opposite ends thereof. The gas inlet of the turbine is in communication with the gas outlet of the internal combustion engine for receiving gas therefrom.
    Type: Grant
    Filed: November 7, 1988
    Date of Patent: June 26, 1990
    Assignee: Sundstrand Corporation
    Inventor: Colin Rodgers
  • Patent number: 4916903
    Abstract: The present invention relates to a method for controlling the working cycle of a four-stroke internal combustion engine which is supercharged by at least one exhaust-driven turbo-compressor (4), and also to an arrangement for carrying out the method. Each cylinder of the engine is provided with an inlet valve (2) to which the compressor (5) of the turbo-compressor (4) delivers air through an inlet pipe (6), and also with an outlet valve (3) from which gases are passed from the cylinder to the turbine (7) of the turbo-compressor (4) through an outlet pipe (8). According to the invention each cylinder is further provided with a pressure control valve (9) which is connected to the outlet pipe (8) by a pressure control line (10), between the outlet valve (3) and the turbine (7) of the turbo-compressor (4).
    Type: Grant
    Filed: January 11, 1988
    Date of Patent: April 17, 1990
    Inventor: Ernst Holmer
  • Patent number: 4873825
    Abstract: A prime mover comprises a positive displacement engine (100), such as a reciprocating or rotary piston engine, which is linked to a turbine/turbocompressor set, such as the gas turbine engine (102). The exhaust gases of the positive displacement engine pass through a duct (122) to drive the turbine (134) which drives the turbocompressor (106), which in turn turbocharges the positive displacement engine (100) through a duct (108). Disclosed are efficient overall operating cycles for such prime movers, advantageous adaptations of prime movers capable of performing such operating cycles, and operating cycles for the positive displacement engine (100) which enable it to contribute most effectively to the efficiency of the overall operating cycles.
    Type: Grant
    Filed: September 15, 1987
    Date of Patent: October 17, 1989
    Inventor: John A. Jenes
  • Patent number: 4833886
    Abstract: In a diesel engine (1) supercharged by an exhaust gas turbocharger, both the compressor (4) and the turbine (3) of the supercharger are designed for full engine power and speed. A by-pass duct (8) provided with a non-return valve (9) and a control device (10) is connected between the exhaust gas duct (9) and the boost air duct (5). The turbine (3) is equipped with means (11, 12, 13) for varying the turbine equivalent cross-section. At part load, the equivalent cross-section and, simultaneously, the by-pass duct cross-section are varied in order to operate as near as possible to the surge limit of the compressor (4).
    Type: Grant
    Filed: September 7, 1988
    Date of Patent: May 30, 1989
    Assignee: BBC Brown, Boveri & Company, Ltd.
    Inventor: Erwin Meier
  • Patent number: 4785635
    Abstract: In an engine (1), supercharged by a turbocompressor unit and provided with a bypass pipe (14), the exhaust gas manifold (13) of the engine has a small and constant section, the junction between the bypass pipe (14) and the gas inlet (11) of the turbine (5) is located upstream of the first junction (18) between the manifold (13) and pipes (12) connecting the work chambers (2) of the engine (1) to the manifold (13) and the bypass pipe (14) includes throttling means (15) which are such that the difference between the total pressures prevailing directly in the outlet (7) of the compressor (6) and upstream of the turbine (5) substantially only depend on the first of said pressures.
    Type: Grant
    Filed: July 17, 1986
    Date of Patent: November 22, 1988
    Assignee: Etat Francais
    Inventors: Jean F. Melchior, Thierry M. Andre
  • Patent number: 4781028
    Abstract: A diesel engine, in particular an aircraft engine with an exhaust gas turbocharger, which comprises a compressor and a turbine, wherein for the engine (1) a compressed air starter (20), for the engine (1), is provided whose exhaust air (31, 31') is directed via the turbocharger (4) into the combustion chamber of the engine (1).
    Type: Grant
    Filed: March 25, 1987
    Date of Patent: November 1, 1988
    Inventor: Michael Zoche
  • Patent number: 4774810
    Abstract: An arrangement of interrelated automatically responsive accesories for an Otto type internal combustion engine wherein an exhaust driven turbine rotor housing is directly connected to the engine exhaust manifold outlet, with the full exhaust flame kinetic energies impinging with full maximum velocity-thrust force against the turbine rotor vaning, at a flow rate variously intensified by the volumes of oxygen and hydrogen gases being fed to the engine intake in accordance to engine speed and load conditions may determine.
    Type: Grant
    Filed: November 16, 1987
    Date of Patent: October 4, 1988
    Assignee: Stephen Masiuk
    Inventor: Howard Bidwell
  • Patent number: 4760702
    Abstract: In a supercharged marine diesel engine having at least one exhaust-gas turbocharger (6, 7) and a separate utility turbine (12) which is connected in parallel with the supercharging turbine (7) and delivers power, and having at least one auxiliary diesel engine (10) which is supercharged by means of a turbocharger and which drives a synchronous generator (11) supplying the ship's electrical system with electrical energy, the utility turbine (12) is coupled to a free shaft end of the auxiliary diesel/generator unit (10, 11). In this way, the auxiliary diesel engine (10) can be relieved of load, which results in a considerable fuel saving. In order to maintain a positive scavenging gradient when the auxiliary diesel engine (10) is relieved of load, a small portion of the exhaust gases of the marine diesel engine (2) is conveyed to a point upstream of the supercharging turbine (19) of the auxiliary diesel engine (10).
    Type: Grant
    Filed: February 11, 1987
    Date of Patent: August 2, 1988
    Assignee: BBC Brown, Boveri & Company, Limited
    Inventors: Hansrudolf Ammann, Hans J. Egger, Adrian Streuli
  • Patent number: 4742681
    Abstract: In a multi-cylinder internal combustion engine having fuel injection, in particular a turbo-engine, having air intake and exhaust gas conduits, a turbocharger and a regulating valve for furnishing combustion air to the exhaust gas conduit when the throttle valve in the air intake conduit is closed partially or entirely, in order to maintain the charge pressure of the turbocharger during overrunning or at partial load with good efficiency of the system. When the regulating valve opens, a portion of the cylinders is not ignited and the remaining portion of the cylinders is ignited at an extremely late instant of ignition, with suitable metering of the fuel injection quantity.
    Type: Grant
    Filed: December 29, 1986
    Date of Patent: May 10, 1988
    Assignee: Robert Bosch GmbH
    Inventors: Eberhard Haberkern, Gerhard Lotterbach, Jan F. van Woudenberg, Udo Zucker
  • Patent number: 4674283
    Abstract: A turbocharging system for an internal combustion engine improves performance and efficiency under low-speed, high-load operating conditions by adding secondary air to the exhaust gas upstream of the turbocharger. The secondary air combusts with unburned fuel contained in the exhaust gas to increase the temperature and pressure of the exhaust gas driving the turbocharger. Secondary air is added only when the exhaust gas temperature is above a prescribed temperature and the air-fuel ratio of the exhaust gas is below a prescribed ratio.
    Type: Grant
    Filed: October 16, 1985
    Date of Patent: June 23, 1987
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Noboru Ishida, Mitsuyoshi Kawamura, Toshiyuki Ishihara
  • Patent number: 4622816
    Abstract: The turbocompressor for supercharging an internal combustion engine comprises a compressor whose output is connected to the intake manifold of the engine driven by a turbine which is driven by the exhaust gases of the engine. A take-off duct brings a fraction of the airflow supplied by the compressor to the exhaust gases upstream of the turbine. The turbine comprises distributor vanes with variable setting, typically in a range of about 40.degree.. With this arrangement, the low speed running torque and the efficiency are improved, more especially in the case of traction engines.
    Type: Grant
    Filed: February 2, 1984
    Date of Patent: November 18, 1986
    Assignee: Office National d'Etudes et de Recherches Aerospatiales (par abreviation O.N.E.R.A.)
    Inventor: Serge Boudigues
  • Patent number: 4616481
    Abstract: An internal combustion engine (1), supercharged by a turbocompressor (3), comprises a bypass conduit (11) in which is placed an auxiliary combustion chamber (14). The primary zone (13) of this chamber (14) receives fuel whose flow is determined by regulating means (20). These means (20) vary this flow in the same direction as a parameter which is a characteristic of the load of the engine (1), in particular the temperature of the gases measured in the exhaust of the engine (1) by a sensor (22).
    Type: Grant
    Filed: January 29, 1985
    Date of Patent: October 14, 1986
    Assignee: French State
    Inventors: Jean Melchior, Thierry Andre, Alain Dourille
  • Patent number: 4616482
    Abstract: The turbocharging plant of an internal combustion engine includes two turbines connected in series, of which one drives the compressor and the other transfer its output to the engine mechanically. The turbines and the compressor are mounted at the same side of the engine. The turbines can be designed to handle the gas in a radially inwards directed flow, the downstream turbine being mounted at a lower level than the upstream one, and receiving the gas by way of a double volute device. A third turbine designed to handle the gas in a radially outwards directed flow may be interposed between the two first mentioned turbines.
    Type: Grant
    Filed: August 1, 1984
    Date of Patent: October 14, 1986
    Assignee: AB Volvo
    Inventors: Sven-Olof Kronogard, Clas-Olof Kronogard, Hakan Kronogard