With Heat Exchanger To Transfer Energy From Engine Exhaust To Motive Fluid For Motor Patents (Class 60/604)
  • Publication number: 20140373820
    Abstract: A method for adjusting an exhaust heat recovery valve is presented. In one embodiment, the method may control an amount of boost provided by a turbocharger to an engine.
    Type: Application
    Filed: September 10, 2014
    Publication date: December 25, 2014
    Inventors: Ross Dykstra Pursifull, Joseph Norman Ulrey
  • Publication number: 20140325981
    Abstract: The inventive turbo supercharging device with air bleed and regeneration (1) for an alternating internal combustion heat engine (2) includes a regenerating exchanger (31) in which the exhaust gases expelled by the engine (2) circulate, the latter transferring their heat to other gases expelled by a centrifugal power compressor (21) before the latter are expanded by a power turbine (27) that rotates the compressor (21), then are cooled in the regenerating exchanger (31) while transferring their heat to the gases expelled by the compressor (21).
    Type: Application
    Filed: May 29, 2014
    Publication date: November 6, 2014
    Inventor: Vianney RABHI
  • Patent number: 8833075
    Abstract: A method for adjusting an exhaust heat recovery valve is presented. In one embodiment, the method may control an amount of boost provided by a turbocharger to an engine.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: September 16, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Ross Dykstra Pursifull, Joseph Norman Ulrey
  • Publication number: 20140123642
    Abstract: A turbo apparatus using a waste heat recovery system for a vehicle may include a waste heat recovery unit heating a working fluid by using waste heat of the vehicle, and an expander provided in a turbocharger and fluid-connected to the waste heat recovery unit, wherein the expander generates a rotational force by using the working fluid supplied from the waste heat recovery unit thereto and transmits the rotational force to a turbo shaft.
    Type: Application
    Filed: March 18, 2013
    Publication date: May 8, 2014
    Applicant: Hyundai Motor Company
    Inventor: Woo Seok Kim
  • Patent number: 8707688
    Abstract: In a commercial vehicle with an internal combustion engine, a muffler in the exhaust gas system, and a heat recovery system, including a medium-containing circuit having at least one pump, an evaporator, an expander, and a condenser, the evaporator present in the medium-containing circuit of the heat recovery system is placed so that the evaporator is integrated into the muffler, where it either is installed in the tailpipe or partially replaces it, or is attached externally to the muffler, and an end section of the tailpipe, or is integrated into the tailpipe, which extends from the muffler and proceeds vertically upward behind the driver's cab, the evaporator being either installed in the tailpipe or partially replacing it, or is integrated into a muffler, which is installed in an exhaust pipe proceeding vertically upward behind the driver's cab.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: April 29, 2014
    Assignee: MAN Nutzfahrzeuge Öesterreich AG
    Inventors: Gottfried Raab, Markus Raup, Josef Klammer
  • Publication number: 20140075934
    Abstract: A line circuit (4) and a method for operating a line circuit (4) for waste-heat utilization of an internal combustion engine (2) are proposed. A working medium circulates in the line circuit (4). The line circuit (4) contains a feed pump (6), at least one heat exchanger (8), an expansion machine (10), a feed-water container (14), in order to store the liquid working medium, and a condenser (12), wherein the feed-water container (14) is connected to the feed pump (6) by way of a line (29). The feed pump (6) has a return-flow line (30), via which liquid working medium can be discharged from the feed pump (6).
    Type: Application
    Filed: April 27, 2012
    Publication date: March 20, 2014
    Applicant: ROBERT BOSCH GMBH
    Inventors: Gregory Rewers, Nadja Eisenmenger, Achim Brenk, Dieter Seher, Hans-Christoph Magel, Andreas Wengert
  • Patent number: 8650879
    Abstract: The present application and the resultant patent provide a waste heat recovery system. The waste heat recovery system may include a first organic rankine cycle system, a second organic rankine cycle system, and one or more preheaters. The preheaters may be one or more charge air coolers. The charge air coolers may be in communication with the first organic rankine cycle system, the second organic rankine cycle system, or both the first organic rankine cycle system and the second rankine cycle system.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: February 18, 2014
    Assignee: General Electric Company
    Inventors: Sebastian W. Freund, Gabor Ast, Pierre Huck, Sara Rocci Denis, Monika Muchlbauer, Albert Scharl, Wolfgang Madl
  • Patent number: 8621862
    Abstract: A remote cooling system (10) for cooling turbocharged compressed air from a charge-air cooled engine (12) which is placed within an enclosed environment. The cooling system (10) comprises a charge-air cooler (14) located a predetermined distance from the engine (12). The charge-air cooler (14) comprises a fluid receiver (16) which receives turbocharged air from the engine 12, an air-to-water heat exchanger (24) which cools the turbocharged air received from the fluid receiver (16), and a fluid return member (26) for returning cooled air to the engine (12). A secondary cooling device (34), located outside of the enclosed environment, provides heat transfer from the heat exchanger (24) within the charge-air cooler (14) to an external environment.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: January 7, 2014
    Assignee: Wabtec Holding Corp.
    Inventors: Michael W. Sprenger, Matthew L. Warnick
  • Patent number: 8601792
    Abstract: An oil cooler is provided for a wall of an air flow passage of a gas turbine engine. The oil cooler has a heat exchanger with an oil conduit for carrying a flow of heated oil proximal to the wall of the air flow passage. The heat exchanger is arranged to transfer heat from the heated oil to the air flowing through the passage. The oil cooler further has a system for altering the flow of air across the heat exchanger such that the heat transfer effectiveness of the heat exchanger can be adjusted.
    Type: Grant
    Filed: January 24, 2011
    Date of Patent: December 10, 2013
    Assignee: Rolls-Royce PLC
    Inventor: John A Mylemans
  • Patent number: 8601791
    Abstract: Setting in place of one or several coolers in the wall of a secondary flow of a bypass turbomachine. The wall extends from an intermediate casing toward a leading edge of a separator nose between a primary flow and the secondary flow. The wall includes a series of support arms attached to an intermediate casing, distributed over the perimeter of the wall and directed upstream. A series of surface air-oil heat exchangers forming wall segments are arranged end-to-end on the support arms, so as to form an annular wall. A shroud having a leading edge is arranged and fixed in the area of the upstream edges of the heat exchangers, so as to complete the wall. The support arms include hydraulic connectors connected to one another on each arm, adapted to cooperate with corresponding connectors in the area of the heat exchangers and in the area of the intermediate casing.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: December 10, 2013
    Assignee: Techspace Aero S.A.
    Inventors: Denis Bajusz, David Depaepe, Alain Derclaye, Régis Dupuy
  • Patent number: 8601811
    Abstract: A method for adjusting an exhaust heat recovery valve is presented. In one embodiment, the method may control an amount of boost provided by a turbocharger to an engine.
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: December 10, 2013
    Assignee: Ford Global Technologies, LLC
    Inventors: Ross Dykstra Pursifull, Joseph Norman Ulrey
  • Patent number: 8584458
    Abstract: A power plant includes an engine configured to receive charge air and produce exhaust. A first turbo machine is configured to be driven by the exhaust and drive a compressor that receives air. The compressor is configured to produce the charge air. A second turbo machine is configured to receive a portion of the exhaust and rotationally drive a pump in response thereto. High temperature and low temperature EGR heat exchangers are arranged in the exhaust gas recirculation passage serially relative to one another upstream from the pump. A heat exchanger arranged in the exhaust gas recirculation passage upstream from the pump. A water separator is arranged in the exhaust gas recirculation passage fluidly between the heat exchanger and the pump. An EGR catalyst is arranged in the exhaust gas recirculation passage upstream from the heat exchanger.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: November 19, 2013
    Assignee: AVL Powertrain Engineering, Inc.
    Inventors: Ho Teng, Gerhard Regner, Gary Hunter
  • Patent number: 8572962
    Abstract: An exhaust gas recirculation system is provided that includes an internal combustion engine, which is supplied with exhaust gas, diverted at a removal point and returned via a return point and/or charge air, having a heat exchanger arranged between the removal point and the return point, for the returned exhaust gas and/or the charge air, and having an exhaust gas recirculation valve, by means of which the amount of returned exhaust gas and/or charge air can be regulated. To provide an exhaust gas recirculation system, which has a simple structure and can be manufactured cost-effectively, the exhaust gas recirculation valve is connectable between the removal point and the heat exchanger.
    Type: Grant
    Filed: September 27, 2010
    Date of Patent: November 5, 2013
    Assignees: Behr GmbH & Co. KG, Behr France Rouffach SAS
    Inventors: Hans-Ulrich Steurer, Eberhard Pantow, Jérôme Genoist
  • Publication number: 20130283784
    Abstract: An energy recovery arrangement is disclosed for use with an engine. The energy recovery arrangement may include a closed circuit containing a high-pressure working fluid, a first boiler configured to receive waste heat from a first source on the engine, and a second boiler disposed upstream of the first boiler and configured to receive waste heat from a second source on the engine. The energy recovery arrangement may also include an energy extractor disposed at a location downstream of the first and second boilers, a condenser disposed at a location downstream of the energy extractor, and a pump disposed at a location downstream of the condenser and upstream of the first and second boilers. The energy recovery arrangement may further include a recuperator disposed in parallel with the second boiler and configured to transfer heat from working fluid exiting the extractor to working fluid exiting the pump.
    Type: Application
    Filed: April 30, 2012
    Publication date: October 31, 2013
    Inventors: Teoman UZKAN, Thomas G. Gallagher
  • Patent number: 8554377
    Abstract: Methods for optimizing a thermocline in a thermal energy storage fluid within a thermal energy storage tank are disclosed. The methods comprise identifying a thermocline region in the fluid, adding thermal energy to a fluid stream extracted from the thermocline region, and returning the fluid stream to the tank at a plurality of locations above the thermocline region. The methods further comprise regulating the temperature of the fluid returned to the tank at a set point temperature by modulating the flow rate of the fluid stream and by changing the location from where the fluid is extracted from the tank.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: October 8, 2013
    Assignee: Terrafore, Inc.
    Inventors: Anoop K Mathur, Rajan B Kasetty
  • Publication number: 20130219882
    Abstract: An engine exhaust heat recovery system includes an engine exhaust heat conduit that interacts with a two-phase fluid that exists in liquid and gaseous states within a single closed loop. A first heat exchanger, which may be a boiler, interfaces with and receives heat from the engine exhaust conduit. Exhaust heat energy converts the fluid from the liquid state into the gaseous state for transfer into a heat expander situated downstream of the first heat exchanger. The heat expander utilizes the gaseous heat energy to rotate a flywheel, and a system of clutches is situated and adapted to permit the flywheel to transfer mechanical energy for subsequent, selective production of work upon demand. In one disclosed embodiment, the heat expander may be a high-speed turbine with a rotary power shaft coupled to a transmission and a plurality of clutches adapted to engage and actuate the flywheel.
    Type: Application
    Filed: February 29, 2012
    Publication date: August 29, 2013
    Applicant: CATERPILLAR, INC.
    Inventor: Jeffrey Edward Jensen
  • Publication number: 20130180241
    Abstract: The invention concerns a conveyor system for oil or gas with an engine, which generates an exhaust gas flow 4; with a conveying device (2) driven by the engine in the form of a pump or compressor, which conveys and/or compresses said oil or said gas; with an exhaust gas energy recovery device, which converts the heat of the exhaust gas flow (4) into mechanical energy.
    Type: Application
    Filed: February 18, 2012
    Publication date: July 18, 2013
    Applicant: Voith Patent GMBH
    Inventors: Volker Middelmann, Andreas Herrmann, Maik Tietz, Daniel Flemmer, Thomas Vogel, Jurgen Berger, Stephan Bartosch
  • Publication number: 20130074497
    Abstract: A waste heat recovery system is for use with a power unit that includes an internal combustion engine. The waste heat recovery system includes a Rankine cycle device in which working fluid circulates through a pump, a boiler, an expander and then through a condenser, heat exchange occurs in the boiler between the working fluid and intake fluid that is introduced into the internal combustion engine while being cooled, a determination device for determining required cooling load for the intake fluid, a pressure reducing device for reducing evaporation pressure in the Rankine cycle device, and a controller for controlling the pressure reducing device so as to reduce the evaporation pressure below a predetermined evaporation pressure if the required cooling load determined by the determination device exceeds a threshold.
    Type: Application
    Filed: September 7, 2012
    Publication date: March 28, 2013
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Hidefumi MORI, Masao IGUCHI, Fuminobu ENOKIJIMA, Fumihiko ISHIGURO
  • Patent number: 8386147
    Abstract: In a heating apparatus for heating the air sucked into a gas turbine by a heat exchanger, the temperature fluctuation of the heated air is suppressed even in the period, for which a steam source to be fed to the heat exchanger is changed. For suppression, a heat exchanger is fed with both a self-can steam, the feed rate of which is controlled by a self-can steam control valve, and the auxiliary-steam, the feed rate of which is controlled by an auxiliary-steam control valve. At starting time, the quantity of the auxiliary-steam is reduced at a constant rate, and that of the self-can steam is increased while a feedback control and a feedforward control are being made. At stopping time, the quantity of the self-can steam is reduced at a constant rate, and that of the auxiliary-steam is increased while the feedback control and the feedforward control are being made.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: February 26, 2013
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Satoshi Tanaka, Shoichi Harada
  • Patent number: 8230675
    Abstract: A method for controlling an engine with exhaust gas recirculation is provided. The method comprises directing EGR from exhaust downstream of an exhaust-aftertreatment catalyst to mix with fresh air upstream of an intake compressor and upstream of a throttle valve, and, in response to increased throttling by the throttle valve, discharging the mixed EGR and fresh air from downstream of the intake compressor to the exhaust downstream of the exhaust-aftertreatment catalyst.
    Type: Grant
    Filed: January 8, 2010
    Date of Patent: July 31, 2012
    Assignee: Ford Global Technologies, LLC
    Inventors: Ross Dykstra Pursifull, Allan J. Lippa
  • Patent number: 8205443
    Abstract: A heat exchanging system suitable for use in an exhaust gas recirculation (EGR) circuit comprises a split EGR heat exchanger arrangement. Exhaust gas is used to warm engine oil via a first heat exchanger during initial stages of an engine operating cycle. In the later stages of the operating cycle, recirculated exhaust gases are diverted to flow through the second heat exchanger where they are cooled by the engine coolant.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: June 26, 2012
    Assignee: Ford Global Technologies LLC
    Inventors: Ian Graham Pegg, Roland Stark
  • Publication number: 20110197582
    Abstract: An exhaust arrangement (16) for an internal combustion engine (10). An internal combustion engine (10) including such an exhaust arrangement (16) comprises a first exhaust duct (18) and a second exhaust duct (20) for the exhaust flow from the engine. A valve arrangement is provided, preferably comprising separate first and second exhaust valves (22,24) associated with each cylinder (12) of the internal combustion engine (10), to selectively direct exhaust from the engine (10) to the first exhaust duct (18) during a first exhaust period, and to the second exhaust duct (20) during a subsequent second exhaust period. A turbine (28) having an inlet (26) is connected to the first exhaust duct (18); and a compressor (32) drivingly connected to and driven by the turbine (28) has an inlet (34) connected to second duct (20).
    Type: Application
    Filed: October 16, 2009
    Publication date: August 18, 2011
    Applicant: LOUGHBOROUGH UNIVERSITY
    Inventor: Andrew Morgan Williams
  • Patent number: 7891186
    Abstract: A waste heat recovery system is provided for an internal combustion engine having a piston, a cylinder and an intake manifold, significantly improving gas mileage efficiency without reliance on alternative fuels. The system includes a heat loop having a heat transfer fluid, a compressor in fluid communication with the intake manifold to supply compressed air thereto, a Stirling engine operated and optimized via thermal communication with the heat loop, and operatively coupled to the compressor. The system includes a chiller in thermal communication with the heat loop, and with the intake manifold to cool the compressed air communicate to the cylinder. The system may include additional Stirling engines operating other devices, or being operated by a device, such as a propeller. A vehicle can incorporate the system and route fluid to and from a radiator. The system can be used in both portable and stationary applications.
    Type: Grant
    Filed: January 12, 2010
    Date of Patent: February 22, 2011
    Inventor: Indru J. Primlani
  • Publication number: 20100077746
    Abstract: A turbocharged engine system is configured to vaporize methanol using heat from exhaust gases and uses the vaporized methanol to drive the engine's turbocharger. The methanol may also be dissociated into hydrogen and carbon monoxide. After passing through the turbocharger, the vapor is injected into the engine by port injection. By selective timing of exhaust valves, the exhaust gases are separated into two streams, a first stream comprising gases ejected during exhaust blowdown, and a second stream of gases ejected during the remainder of the engine's exhaust stroke. The blowdown gases are employed to drive a separate turbine of the turbocharger.
    Type: Application
    Filed: September 30, 2008
    Publication date: April 1, 2010
    Applicant: Government of the U.S.A., as represented by the Administrator of the U.S. E.P.A.
    Inventor: Charles L. Gray, JR.
  • Publication number: 20100050631
    Abstract: A method of operating an internal combustion engine having an intake, an exhaust, and a turbocharger including a turbine and a compressor, the compressor coupled to the intake and the turbine coupled to the exhaust, the engine further having an exhaust gas recirculation system coupled to the exhaust upstream of the turbine and coupled to the intake downstream of the compressor, the method including transferring heat via a heat exchanger from the exhaust gas recirculation system to downstream of the turbine.
    Type: Application
    Filed: September 3, 2008
    Publication date: March 4, 2010
    Applicant: GENERAL ELECTRIC COMPANY
    Inventor: James Henry Yager
  • Publication number: 20090211245
    Abstract: A turbocharger system comprises a first relatively small high-pressure (HP) turbocharger (1) and a second relatively large low pressure (LP) turbocharger (2). The turbine (6) of the LP turbocharger (2) is connected in series downstream of the turbine (4) of the HP turbocharger (1) in a first exhaust gas passage (11). An exhaust bypass flow passage (12) provides a bypass flow path around the HP turbine (4). A rotary valve (8) is located at a junction of the bypass flow passage (12) and a first exhaust gas flow passage (11). The rotary valve (8) comprises a valve rotor (19) which is rotatable to selectively permit or block flow to the LP turbine (6) from either the first exhaust gas passage (11) or the bypass gas passage (12). The valve (8) is operated during a fired mode of the engine to block exhaust gas flow through the exhaust bypass and at least partially restrict exhaust flow to the LP turbine to raise the exhaust gas temperature.
    Type: Application
    Filed: January 29, 2009
    Publication date: August 27, 2009
    Inventors: James A. Mcewan, Lee J. Robinson
  • Publication number: 20090199556
    Abstract: A waste heat recovery system for a split-cycle engine includes a heat exchange unit. An air compressor device is in communication with the heat exchange unit. A waste heat input receives waste heat from the engine and is in fluid communication with the heat exchange unit. An ambient air intake connected to the air compressor device draws air into the air compressor device. A compressed air outlet member on the air compressor device in fluid communication with a compression cylinder of the split-cycle engine delivers compressed air from the air compressor device to the engine. Engine waste heat is communicated to the heat exchange unit and energy from the waste heat is used to drive the air compressor device, causing the air compressor device to draw in ambient air through the ambient air intake, compress the ambient air, and deliver compressed air to the engine through the compressed air outlet.
    Type: Application
    Filed: April 20, 2009
    Publication date: August 13, 2009
    Inventors: Charles K. Forner, SR., Salvatore C. Scuderi, Stephen P. Scuderi
  • Publication number: 20080196406
    Abstract: An EGR passage partially refluxes exhaust gas to a combustion chamber as an EGR gas. A heat exchanger cools the EGR gas. A heating intake passage branches off from a branching portion formed in a portion of an intake passage on an upstream side of a downstream end of the EGR passage, and its downstream end communicates with a portion of the EGR passage on an upstream side of the heat exchanger. A switch valve adjusts respective amounts of intake air passing through the intake passage and through the heating intake passage. When an EGR valve is closed, an ECU switches the switch valve such that the intake air passes through one of the intake passage and the heating intake passage; when the EGR valve is open, the ECU switches the switch valve such that the intake air passes solely through the intake passage.
    Type: Application
    Filed: February 12, 2008
    Publication date: August 21, 2008
    Inventor: Hiroshi Kuzuyama
  • Publication number: 20080115492
    Abstract: An engine including an exhaust system operable to convey exhaust gases from the engine. A turbocharger is in fluid communication with the exhaust system. A diesel particulate filter, disposed in fluid communication with the exhaust system and located in downstream relation to the turbocharger, operates to substantially remove particulate matter from within the exhaust gases. An exhaust gas recirculation passage, disposed in downstream relation from the diesel particulate filter, operates to communicate a portion of the exhaust gases to an air-to-air heat exchanger, which operates to cool the portion of the exhaust gases. An exhaust gas recirculation valve operates to selectively and variably communicate the portion of the exhaust gases to an inlet air duct of an intake system. An engine cover defines an opening operable to communicate ambient air to the air-to-air heat exchanger to promote the cooling of the portion of the exhaust gases.
    Type: Application
    Filed: November 20, 2006
    Publication date: May 22, 2008
    Inventor: Charles E. Freese V
  • Publication number: 20080115491
    Abstract: An engine including an exhaust system operable to convey exhaust gases from the engine. A turbocharger is in fluid communication with the exhaust system. A diesel particulate filter, disposed in fluid communication with the exhaust system and located in downstream relation to the turbocharger, operates to substantially remove particulate matter from within the exhaust gases. An exhaust gas recirculation passage, disposed in upstream relation from the turbocharger and diesel particulate filter, operates to communicate a portion of the exhaust gases to an air-to-air heat exchanger, which operates to cool the portion of the exhaust gases. An exhaust gas recirculation valve operates to selectively and variably communicate the portion of the exhaust gases to an inlet air duct of an intake system. An engine cover defines an opening operable to communicate ambient air to the air-to-air heat exchanger to promote the cooling of the portion of the exhaust gases.
    Type: Application
    Filed: November 17, 2006
    Publication date: May 22, 2008
    Inventor: Charles E. Freese V
  • Patent number: 7152407
    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: Grant
    Filed: April 4, 2003
    Date of Patent: December 26, 2006
    Assignee: Volvo Technology Corporation
    Inventor: Edward Jobson
  • Patent number: 6907734
    Abstract: An evaporator (11) is provided that carries out heat exchange between exhaust gas discharged from an exhaust port (16B) of an internal combustion engine and water, the evaporator (11) including a large number of heat transfer plates (83) stacked at predetermined intervals from each other in a direction perpendicular to the plane of the paper and a large number of pipe members (90) running through the heat transfer plates (83) and being connected in a zigzag shape at opposite ends, and exhaust gas passages (87, 88, 89) being defined between the heat transfer plates (83) by a partition wall (86) formed by making projections formed on the heat transfer plates (83) abut against each other. While passing through the exhaust gas passages (87, 88, 89), the exhaust gas discharged from the exhaust port (16B) carries out heat exchange with water flowing through the pipe members (90), and the water that has received the thermal energy of the exhaust gas turns into high temperature, high pressure steam.
    Type: Grant
    Filed: November 1, 2002
    Date of Patent: June 21, 2005
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Masashi Shinohara, Tsuneo Endoh, Atsushi Baba
  • Patent number: 6513328
    Abstract: An internal combustion has an exhaust gas line, an exhaust gas heat exchanger through which exhaust gas withdrawn through the exhaust gas line passes so as to take heat energy, a heating heat exchanger to which the withdrawn heat energy is made available and which is connected to a cooling fluid circuit of the internal combustion engine, an exhaust gas turbocharger provided with a turbine housing and a turbine wheel rotatable in the latter, the exhaust gas turbocharger being arranged in the exhaust gas line, the exhaust gas heat exchanger being connected heat conductively with the turbine housing of the exhaust gas turbocharger for withdrawing of heat from the exhaust gas which passes through the turbine wheel.
    Type: Grant
    Filed: May 23, 2001
    Date of Patent: February 4, 2003
    Assignee: Robert Bosch GmbH
    Inventors: Michael Baeuerle, Klaus Ries-Mueller
  • Patent number: 6374613
    Abstract: A closed loop vapor cycle generated by a special device formed by heat transfer and a vapor expander means it is utilized to convert waste heat from conventional power systems into additional thermodynamic work, thereby improving the overall power system efficiency. Superheated vapor (i.e. steam) is instantaneously produced inside special energy transfer means where waste heat is converted into fluid energy with desired thermodynamic properties. The superheated vapor is then converted into mechanical energy through special work-producing units (expanders), thereby returning a significant fraction of the energy contained in the waste heat to the power system.
    Type: Grant
    Filed: September 7, 2000
    Date of Patent: April 23, 2002
    Inventor: Claudio Filippone
  • Patent number: 6314925
    Abstract: A Recuperative Cycle tow-stroke internal combustion engine having an expander cylinder with an open combustion chamber in its working end and a separate compressor for injecting a compressed air charge into the chamber obtains improved Carnot efficiency by the containment of all its working components in a new and novel cylinder head. This head captures thermal energy normally thrown away in engine exhaust and transfers it advantageously back into the working cycle. The result, long sought by others, has been achieved by incorporating compactly within the head an internal exhaust heat recuperator or heat exchanger closely coupled with a combustion chamber open to the expansion cylinder. A recuperator-protecting valve isolates the recuperator from hot combustion gases until they have been cooled by full piston expansion and a catalytic convertor may be placed in an optimum temperature position within the recuperator chamber.
    Type: Grant
    Filed: July 3, 1998
    Date of Patent: November 13, 2001
    Inventor: Richard Berkeley Britton
  • Patent number: 5339632
    Abstract: This invention relates generally to a system for increasing the thermodynamic efficiency of internal combustion engines. In the system of the invention, the unused heat generated during normal engine operation in the exhaust gases, lubricating oil and engine coolant is utilized to compress air which produces additional energy that performs additional work in the engine system by means of a modified Rankine cycle. This same system used to maximize efficiency and increase power also acts to reduce pollutants in the exhaust emissions.
    Type: Grant
    Filed: December 17, 1992
    Date of Patent: August 23, 1994
    Inventors: James McCrabb, Jerald R. Gregg
  • Patent number: 4558670
    Abstract: Stratification of charge in a four stroke internal combustion engine in which a stream of air issues from a duct (46) and is directed tangentially into a cylinder (2) to circulate about the cylinder adjacent to the cylinder walls. The air is admitted to the cylinder only while the exhaust valve (42) is open. The air circulates adjacent to the cylinder walls during the exhaust stroke and at least a portion thereof remains adjacent the cylinder walls during the subsequent induction and compression strokes. The combustible charge is admitted generally centrally of the cylinder and remains stratified with respect to the circulating air which contains the combustible mixture as a relatively concentrated central core whereby reliable ignition is achieved. The method may also be applied to two-stroke engines and to diesel engines.
    Type: Grant
    Filed: January 21, 1983
    Date of Patent: December 17, 1985
    Inventor: John M. Trihey
  • Patent number: 4010613
    Abstract: Turbocharged engine air supply cooling arrangement and method that utilizes an air-to-air heat exchanger provided with a fan to circulate ambient air about the heat exchanger to cool turbocharger compressor discharge air. The air is cooled to near, but above, the temperature of the ambient air as it passes through the heat exchanger. The air is then conveyed through a turbine which is mechanically connected to rotate the fan in response to the energy of expansion of the air. As the air expands through the turbine, it is cooled to a lower temperature, even below that of the ambient air before delivery to the engine.
    Type: Grant
    Filed: June 2, 1975
    Date of Patent: March 8, 1977
    Assignee: The Garrett Corporation
    Inventor: Charles E. McInerney
  • Patent number: 3965681
    Abstract: An internal combustion engine is provided with a turbosupercharger including a vaned rotatable compressor wheel arranged in an inlet passage to compress inlet mixture for delivery to the engine combustion chamber, a vaned turbine wheel arranged in an exhaust passage to be driven by the flow of engine exhaust gases, a shaft interconnecting the turbine and compressor wheels for rotation together on a common axis, and vaporizable fluid heat transfer means in the form of a heat pipe extending through the shaft between the turbine and compressor wheels for transferring exhaust heat from the turbine wheel to the compressor wheel to heat the engine inlet mixture.
    Type: Grant
    Filed: June 30, 1975
    Date of Patent: June 29, 1976
    Assignee: General Motors Corporation
    Inventors: Floyd A. Wyczalek, John L. Harned, Ora M. Smith
  • Patent number: 3948235
    Abstract: Waste heat generated by an internal combustion engine is utilized by an apparatus comprising a supercharger, a turbine drivably engaging the supercharger, a vaporizer, a condenser and fluid injection duct means. The turbine, the vaporizer and the condenser form a closed loop within which a motive fluid is circulated. The vaporizer is intimately associated with the internal combustion engine, and the motive fluid within the vaporizer is converted to gaseous form by heat transfer from the engine. The vaporized fluid is then used to drive the turbine which, in turn, drives the supercharger, thereby increasing the efficiency of the engine. Spent motive fluid is recovered from the turbine, condensed, and recycled to the vaporizer. Additionally, a fluid injection duct introduces fluid preferably in the form of steam into the air which enters the engine.
    Type: Grant
    Filed: March 31, 1975
    Date of Patent: April 6, 1976
    Assignee: Joseph Gamell Industries, Incorporated
    Inventor: Joseph A. Gamell