Fluid Motor Means Is Expansible Chamber Type With Movable Parts Of Motor And Engine Being Interconnected Patents (Class 60/620)
  • Patent number: 9097178
    Abstract: An internal combustion engine, including a combustion chamber with a first aperture; a compression chamber with a second aperture; and a crossover valve comprising an internal chamber, first and second valve seats, a valve head, and first and second valve faces on the valve head, wherein the first aperture allows fluid communication between the combustion chamber and the internal chamber, the second aperture allows fluid communication between the compression chamber and the internal chamber, the first valve face couples to the first valve seat to occlude the first aperture, and the second valve face couples to the second valve seat to occlude the second aperture.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: August 4, 2015
    Assignee: Tour Engine, Inc.
    Inventors: Hugo Benjamin Tour, Oded Tour, Gilad Tour
  • Patent number: 9027346
    Abstract: The present invention relates to a combustion engine system having a balance arm, first and second sets of opposed combustion cylinders, and a set of opposed worked devices. The balance arm has a pivot point, and is configured so that an exploitable energy is taken from a kinetic energy of the balance arm. The first set of working combustion cylinders being interconnected by a common first piston rod that is connected to the balance arm. The second set of working combustion cylinders being interconnected by a common second piston rod that is connected to the balance arm so that the pivot point is between the first and second piston rods. The worked devices are interconnected by a common worked piston rod that is connected to the balance arm so that the worked devices are between the first and second sets of combustion cylinders.
    Type: Grant
    Filed: March 6, 2013
    Date of Patent: May 12, 2015
    Inventor: Odd Bernhard Torkildsen
  • Patent number: 9003789
    Abstract: An energy harvesting system for converting thermal energy to mechanical energy includes a heat engine that operates using a shape memory alloy active material. The shape memory alloy member may be in thermal communication with a hot region at a first temperature and a cold region at a second temperature lower than the first temperature. The shape memory alloy material may be configured to selectively change crystallographic phase between martensite to austenite and thereby one of contract and expand in response to the first and second temperatures. A thermal conduction element may be in direct contact with the SMA material, where the thermal conduction element is configured to receive thermal energy from the hot region and to transfer a portion of the received thermal energy to the SMA material through conduction.
    Type: Grant
    Filed: December 30, 2011
    Date of Patent: April 14, 2015
    Assignees: GM Global Technology Operations LLC, Dynalloy, Inc., The Regents of the University of Michigan
    Inventors: Alan L. Browne, Nancy L. Johnson, Paul W. Alexander, John Andrew Shaw, Christopher Burton Churchill, Andrew C. Keefe, Geoffrey P. McKnight, Guillermo A. Herrera, Nilesh D. Mankame, Richard J. Skurkis, Wayne Brown
  • Publication number: 20150013333
    Abstract: A heat recovery system for an internal combustion engine may include a heat transfer device flowed through by a fluidic heat carrier for transferring the heat from a combustion exhaust gas of the internal combustion engine to the heat carrier, a heat power machine flowed through by the heat carrier for converting the heat transferred to the heat carrier into mechanical work, a substantially cyclically closed duct system for connecting the heat transfer device with the heat power machine, at least one displacement pump for conveying the heat carrier through the duct system in a predetermined flow direction, and a pump drive for driving the displacement pump. A reduced wear may result when the heat recovery system is supplemented by an impermeable separating membrane for the fluid-tight separation of the heat carrier from the pump drive.
    Type: Application
    Filed: July 10, 2014
    Publication date: January 15, 2015
    Inventors: Jochen Eggler, Alfred Elsaesser, Christian Maisch, Sascha Senjic
  • Patent number: 8910613
    Abstract: An internal combustion engine is described that includes an expansion cylinder adjacent to a first combustion cylinder (or power cylinder). Combustion gases from the first cylinder are directed to the expansion cylinder to act on the piston in the expansion cylinder. The expansion cylinder has a larger bore (i.e. larger diameter piston) and/or a longer stroke than the first cylinder. The longer stroke also results in a much larger crankshaft arm resulting in a significantly improved mechanical advantage (i.e. torque). In addition, the expansion cylinder includes a check valve that is designed to automatically open the expansion chamber to atmosphere if a negative pressure develops due to the varying amount of exhaust gases at different speeds. In one embodiment, two power cylinders can be connected to one expansion cylinder.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: December 16, 2014
    Inventor: Kurt Amplatz
  • Publication number: 20140352303
    Abstract: A waste heat recovery system with an integrated hydrocarbon adsorber for a vehicle having an internal combustion engine that generates exhaust gas containing hydrocarbons, and a catalytic converter, includes an exhaust gas conduit, an exhaust gas heat exchanger, a heat exchanger bypass valve, a coolant circuit with a coolant bypass and a coolant bypass valve, and a controller. The exhaust gas heat exchanger includes at least one channel through which the exhaust gas is flowable, the channel having an interior surface coated with a hydrocarbon adsorbing material configured to adsorb hydrocarbons. The heat exchanger and coolant bypass valves are configured to selectively direct at least a portion of the exhaust gas and the coolant, respectively, to the exhaust gas heat exchanger or to bypass it. They are controlled by the controller such that the hydrocarbons in the exhaust gas are selectively adsorbable by and desorbable from the coating.
    Type: Application
    Filed: May 31, 2013
    Publication date: December 4, 2014
    Inventors: Halim G. Santoso, Eugene V. Gonze, Chang H. Kim
  • Patent number: 8850815
    Abstract: A hybrid engine that uses a primary internal combustion engine portion and a secondary external combustion engine portion. In a preferred arrangement, the secondary external combustion engine portion operates as a reciprocating steam engine. The heated exhaust gases of the internal combustion engine portion are used to generate steam, and the steam is used to power the steam engine portion adding the steam engine's power output to that of the internal combustion engine. The thermal efficiency of the hybrid engine may be higher than the thermal efficiency of an internal combustion engine without use of the exhaust gas heat. The hybrid engine uses a configuration in which steam is generated directly in the steam engine and a mechanical link between the internal combustion engine portion and the steam engine portion with the result that the hybrid engine is simple and inexpensive to construct and maintain.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: October 7, 2014
    Assignee: 14007 Mining Inc.
    Inventor: Thomas A. Morrison
  • Patent number: 8800283
    Abstract: A shape memory alloy (SMA) heat engine includes a first rotatable pulley, a second rotatable pulley, and an SMA material disposed about the first and second rotatable pulleys and between a hot region and a cold region. A method of starting and operating the SMA heat engine includes detecting a thermal energy gradient between the hot region and the cold region using a controller, decoupling an electrical generator from one of the first and second rotatable pulleys, monitoring a speed of the SMA material about the first and second rotatable pulleys, and re-engaging the driven component if the monitored speed of the SMA material exceeds a threshold. The SMA material may selectively change crystallographic phase between martensite and austenite and between the hot region and the cold region to convert the thermal gradient into mechanical energy.
    Type: Grant
    Filed: December 30, 2011
    Date of Patent: August 12, 2014
    Assignees: GM Global Technology Operations LLC, Dynalloy Inc., The Regents of the University of Michigan
    Inventors: Alan L. Browne, Nancy L. Johnson, Nilesh D. Mankame, Paul W. Alexander, John Andrew Shaw, Christopher Burton Churchill, Andrew C. Keefe, Guillermo A. Herrera, Jeffrey W Brown, Richard J. Skurkis
  • Patent number: 8769946
    Abstract: A cooling system configured for converting thermal energy to mechanical energy includes a source of thermal energy provided by a temperature difference between a heat source having a first temperature and a coolant having a second temperature that is lower than the first temperature. The cooling system includes a cooling circuit configured for conveying the coolant to and from the heat source. The cooling circuit includes a conduit and a pump in fluid communication with the conduit and configured for delivering the coolant to the heat source. The cooling system also includes a heat engine disposed in thermal relationship with the conduit and configured for converting thermal to mechanical energy. The heat engine includes a first element formed from a first shape memory alloy having a crystallographic phase changeable between austenite and martensite at a first transformation temperature in response to the temperature difference between the heat source and coolant.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: July 8, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Paul W. Alexander, Alan L. Browne, Nancy L. Johnson, Patrick B. Usoro, Nilesh D. Mankame, Xiujie Gao, Geoffrey P. McKnight, John A. Cafeo, Christopher P. Henry
  • Patent number: 8769947
    Abstract: An exhaust system configured for converting thermal energy to mechanical energy includes a source of thermal energy provided by a temperature difference between an exhaust gas having a first temperature and a heat sink having a second temperature that is lower than the first temperature. The exhaust system also includes a conduit configured for conveying the exhaust gas, a heat engine disposed in thermal relationship with the conduit and configured for converting thermal energy to mechanical energy, and a member disposed in contact with the conduit and configured for conducting thermal energy from the conduit to the heat engine. The heat engine includes a first element formed from a first shape memory alloy having a crystallographic phase changeable between austenite and martensite at a first transformation temperature in response to the temperature difference between the exhaust gas and the heat sink.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: July 8, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Paul W. Alexander, Alan L. Browne, Nancy L. Johnson, Patrick B. Usoro, Nilesh D. Mankame, Xiujie Gao, Geoffrey P. Mc Knight, Marten Wittorf, John A. Cafeo, Christopher P. Henry
  • Patent number: 8607566
    Abstract: An internal combustion engine has a first work extraction station for extracting work from combustion and expansion of working gases. An emission treatment station treats the working gases after leaving the first extraction work station for reducing emissions. A second work extraction station receives the working gases from the emission treatment station for a second extraction of work from the working gases.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: December 17, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Russell P. Durrett, Venkatesh Gopalakrishnan, Paul M. Najt
  • Publication number: 20130318967
    Abstract: In an axial piston expander for a waste heat recovery device of a motor vehicle, the expander having a shaft with an axis of rotation around which a number of cylinders are arranged parallel to, and distributed around, the axis of rotation, each cylinder including a piston connected to a coupling plate which is pivotally mounted on the shaft so as to provide for an adjustable piston stroke and the cylinders having high pressure inlets and low pressure outlets with valve devices for the control of the operating fluid flow through the cylinders, a stroke adjustment arrangement is provided by which the stroke of the pistons is adjustable via a regulation of the pressure in an operating chamber at the back side of the pistons, the waste heat recovery device being coupleable with the drive train of the internal combustion engine for the transfer of mechanical driving power.
    Type: Application
    Filed: May 25, 2013
    Publication date: December 5, 2013
    Applicant: DAIMLER AG
    Inventors: Jan Gaertner, Thomas Koch
  • Patent number: 8596068
    Abstract: An air aspirated hybrid heat pump and heat engine system (20) for selectively heating and cooling a space (22) having an flow path (24) including a compressor (76), a heat exchanger (32), an expander (78), and a generator (68). A combustion chamber (62) is in the flow path (24) for combusting a fuel in the air during a high heating mode. The heat exchanger (32) dissipates the heat from the air, and the expander (78) depressurizes the air while powering the generator (68). Also included is a positive displacement rotating vane-type device (36) having a stator housing (38) extending between longitudinal ends (40). A compression chamber inlet (52) and an expansion chamber outlet (58) are located on opposite longitudinal ends (40) of the stator housing (38) to be in simultaneous communication with the same chamber (48, 50)). A fluid enters the device through the compression chamber inlet (52) and pushes fluid out of the expansion chamber outlet (58).
    Type: Grant
    Filed: November 1, 2010
    Date of Patent: December 3, 2013
    Inventor: Gilbert Staffend
  • Publication number: 20130277968
    Abstract: The invention concerns a stationary power plant, in particular a gas power plant, to generate electricity; having an internal combustion engine, comprising a fuel medium inlet and an exhaust gas outlet, whereas an exhaust-gas flow of the internal combustion engine is discharged via the exhaust gas outlet; having an electrical generator, which is driven by the internal combustion engine to generate electricity, and which is coupled or can be coupled to an electrical grid, in order to feed the generated electricity into said grid; having a fuel medium supply, which is connected to the fuel medium inlet; wherein steam circuit, in which a working medium is circulated by means of a feed pump, is provided, comprising a heat exchanger arranged in the exhaust gas flow, by means of which waste heat of the exhaust gas flow is transferred to the working medium for partially or completely evaporating the working medium, further comprising a condenser, in which the working medium partially or completely condenses.
    Type: Application
    Filed: January 31, 2012
    Publication date: October 24, 2013
    Inventors: Jens Grieser, Jurgen Berger, Stephan Bartosch
  • Patent number: 8549856
    Abstract: A method of assembling an energy harvesting system is provided. The method includes coupling at least one energy storage device in flow communication with at least one apparatus that is configured to generate thermal energy and to transfer the thermal energy into at least one fluid stream. The energy storage device is configured to store the fluid stream. Moreover, the method includes coupling at least one fluid transfer device downstream from the energy storage device. The fluid transfer device receives the fluid stream from the energy storage device. A bladeless turbine is coupled in flow communication with the fluid transfer device, wherein the bladeless turbine receives the fluid stream to generate power.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: October 8, 2013
    Assignee: The United States of America as Represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Juan Cepedarizo, Gam B. Ganapathi
  • Patent number: 8459027
    Abstract: Combustion engine comprising interconnected combustion cylinders (1, 2, 3, 4), comprising at least two sets of each two opposed working combustion cylinders (1, 2, 3, 4), said two cylinders of each set being interconnected by a common piston rod (5, 6), said two piston rods (5, 6) being connected by one balance arm (7), and the exploitable energy is taken from the kinetic energy of said balance arm (7).
    Type: Grant
    Filed: January 27, 2009
    Date of Patent: June 11, 2013
    Inventor: Odd Bernhard Torkildsen
  • Patent number: 8381522
    Abstract: A steam powered engine system wherein hot exhaust gas produced by a small secondary engine is used to heat water to a temperature above 212 degrees F., the superheated water being injected into a cylinder containing hot compressed gas. The water then flash expands into steam to drive a piston. The hot exhaust gas from the secondary engine is further utilized to scavenge spent gas and liquid from the cylinder during the return stroke of the piston, as well as to maintain a suitably high temperature within the cylinder.
    Type: Grant
    Filed: May 2, 2007
    Date of Patent: February 26, 2013
    Inventor: Christian Hansen, Jr.
  • Patent number: 8381524
    Abstract: A piston and a reciprocating expansion engine with a piston having a piston head, a piston neck, and a piston shaft are described. The piston head has at least one groove which runs in a circumferential direction suitable for receiving a piston ring, and the piston shaft has a pin boss and, at its outer circumference, a guide surface which is suitable for guiding the piston along a cylinder inner wall. An outer diameter of the piston neck is smaller than an outer diameter of the piston head and/or of the piston shaft, and the length of the piston neck approximately corresponds to the travel of the piston in the installed state.
    Type: Grant
    Filed: August 4, 2009
    Date of Patent: February 26, 2013
    Assignee: MAN Nutzfahrzeuge Oesterreich AG
    Inventors: Gottfried Raab, Markus Raup, Josef Klammer, Roland Kirchberger, Michael Lang
  • Patent number: 8381692
    Abstract: A heat engine employs an auxiliary cylinder to receiving exhaust gases from a main cylinder during its exhaust phase to extract mechanical energy from the heat in the exhaust gases. The auxiliary cylinder has an auxiliary piston that reciprocates with an asymmetric pattern in respect to the main crank a counter-rotating auxiliary cranks such that the downward stroke of the auxiliary piston and the upward stroke of the auxiliary piston correspond to crank angles above and below 180 degrees. In one favorable embodiment, fresh air can be drawn in and combined with the exhaust gases.
    Type: Grant
    Filed: January 26, 2011
    Date of Patent: February 26, 2013
    Inventor: John J. Islas
  • Patent number: 8267056
    Abstract: A split-cycle internal combustion engine is disclosed. The engine includes a cylinder block, and a plurality of cooperating power pistons and cylinders mounted in the cylinder block. The power pistons are configured to be energized by forces of combustion. The engine also includes a compressor piston and cylinder configured to compress a volume of air and transfer the compressed air to the power pistons, and an expander piston and cylinder configured to receive exhaust gases from the power pistons. The engine additionally includes a first crankshaft operatively connected to and rotatably driven by the power pistons, a second crankshaft operatively connected to the compressor piston and configured to rotatably drive the compressor piston, and a third crankshaft operatively connected to the expander piston and configured to be rotatably driven by the expander piston. The first, second, and third crankshafts are operatively connected to each other for coordinated rotation.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: September 18, 2012
    Assignee: GM Global Technology Operations LLC
    Inventor: Charles Dean
  • Patent number: 8201407
    Abstract: A drive unit and a method for the operation thereof. The drive unit has an internal combustion engine in operative connection with a driven shaft and a reciprocating piston expansion engine in an operative connection with a crankshaft. The driven shaft is mechanically connected to the crankshaft by a clutch in such a way that torque is transmitted from the crankshaft to the driveshaft. The reciprocating piston expansion engine has at least one cylinder, and a fluid is guided from a fluid supply into an interior of the at least one cylinder at least occasionally via an inlet valve and a bypass valve which is arranged in parallel with the inlet valve.
    Type: Grant
    Filed: May 5, 2009
    Date of Patent: June 19, 2012
    Assignee: MAN Truck & Bus AG
    Inventors: Gottfried Raab, Markus Raup, Josef Klammer
  • Patent number: 8166759
    Abstract: An exhaust heat recovery apparatus includes a reciprocating internal combustion engine in which a piston reciprocates in a cylinder to generate motive power; and a Stirling engine that recovers the thermal energy of the exhaust gas discharged from the internal combustion engine and converts the thermal energy into kinetic energy. The Stirling engine is united with the internal combustion engine. A heater that the Stirling engine includes is disposed in an exhaust manifold of the internal combustion engine. With this configuration, it is possible to restrict reduction in the power output from the exhaust heat recovery means.
    Type: Grant
    Filed: February 1, 2007
    Date of Patent: May 1, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroshi Yaguchi, Daisaku Sawada, Shinichi Mitani
  • Patent number: 8074619
    Abstract: An engine arrangement comprising a first assembly including a first piston in a first cylinder interconnected with a second assembly including a second piston in a second cylinder. Each of the first and second assemblies include an inlet valve for supplying a fuel mixture, and an outlet valve for removing exhaust gases. The first and second assemblies being adapted for cooperation with a gear unit to convert a translation movement into a rotary movement. The engine arrangement so includes two additional assemblies including a third piston in a third cylinder interconnected with a fourth piston in a fourth cylinder and associated valves. The two additional assemblies being adapted for cooperation with the gear unit to convert a translation movement into a rotary movement.
    Type: Grant
    Filed: September 20, 2006
    Date of Patent: December 13, 2011
    Assignee: Harju Linearwandler AB
    Inventor: Bert Harju
  • Patent number: 8028665
    Abstract: The fuel efficiency of an internal combustion reciprocating piston engine may be increased through selective secondary expansion of exhaust gas in the engine cylinders in order to recover exhaust gas energy which is otherwise wasted by cylinder blow-down at the end of the power stroke. Exhaust valve cam switching, intake valve deactivation, multiple exhaust valves, a specialized exhaust manifold arrangement and an exhaust gas diverter valve can be configured to enable a reciprocating engine to selectively operate in efficient eight stroke cycle compound mode when moderate engine power is demanded, then revert to conventional four stroke cycle non-compound mode operation when high engine power is demanded, without stopping the engine.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: October 4, 2011
    Inventor: Mark Dixon Ralston
  • Patent number: 7975485
    Abstract: The present invention is a High Efficient Integrated Heat Engine, or HEIHE for short. HEIHE is a reciprocal combustion engine integrated with both compound cycle and combined cycle. HEIHE comprises twin compound cylinder structure, with the first cylinder being the primary combustion and/or expansion cylinder; the second cylinder being the secondary combustion and/or expansion cylinder. Power strokes driven by expansions of different working fluids such as air-fuel combustion products, steam and compressed air, are integrated into one engine block. Twin cylinder structure provides compound expansions of three (3) different fluids as to recover the energies that would be lost with the exhaust fluids or during braking. All of these make HEIHE work around six (6) periods with twelve (12) operation strokes. Among six (6) working periods involved, four (4) periods contain four (4) different power strokes but only one of the power strokes consumes the fuel.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: July 12, 2011
    Inventors: Yuanping Zhao, Yuanfan Zhao, Yuanjun Zhao, Yiheng Zhao
  • Patent number: 7937943
    Abstract: This invention provides heat engines based on the structure of internal combustion engines and employs a gaseous working fluid without combustion. The heat engine comprises at least a piston and cylinder assembly and each cylinder has at least an associated heating chamber with a heat exchanger unit being disposed therewithin. The chamber may have at least a chamber valve to establish or block the flow of the gaseous working fluid between the heating chamber and cylinder space. The engine is adapted to operate on cycles that enable heat transfer from a heat source to the working fluid while being enclosed within the heating chamber and provides substantially increased heat transfer duration before the power stroke. Therefore the engine may produce sufficiently high power output with reasonably high thermal efficiency.
    Type: Grant
    Filed: August 4, 2007
    Date of Patent: May 10, 2011
    Inventor: Yiding Cao
  • Patent number: 7845171
    Abstract: A supercharged internal combustion engine of a motor vehicle has a cooling circuit, in which a working medium is recycled, which is conveyed at least partially in a vaporous or gaseous physical state. At least one expander unit is provided which is operatively connected with an output shaft of the internal combustion engine via a power train. Via a conversion of energy contained in the at least partially vaporous or gaseous working medium in the expander unit, an output shaft of the expander unit is moveable. The expander unit is embodied as a two-cycle reciprocating engine, which is operatively connected directly or indirectly via the power train with the output shaft of the internal combustion engine.
    Type: Grant
    Filed: June 20, 2007
    Date of Patent: December 7, 2010
    Assignee: MAN Nutzfahrzeuge AG
    Inventors: Heribert Möller, Gottfried Raah
  • Patent number: 7665429
    Abstract: The present invention provides a swirl-injection type eight-stroke engine capable of constantly varying the injection-direction of the high-density-air from the slave cylinder, thereby effectively circulating the high-density-air around the master cylinder wall and master cylinder head during the injection process to speed up the mixing of the high-density-air and the hot combustion medium in the master cylinder, furthermore the hot spots in the master cylinder head and the master cylinder wall are eliminated with the two-direction swirling effect during the cold-expansion process.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: February 23, 2010
    Inventor: Lung-tan Hu
  • Publication number: 20090301086
    Abstract: The fuel efficiency of an internal combustion reciprocating piston engine may be increased through selective secondary expansion of exhaust gas in the engine cylinders in order to recover exhaust gas energy which is otherwise wasted by cylinder blow-down at the end of the power stroke. Exhaust valve cam switching, intake valve deactivation, multiple exhaust valves, a specialized exhaust manifold arrangement and an exhaust gas diverter valve can be configured to enable a reciprocating engine to selectively operate in efficient eight stroke cycle compound mode when moderate engine power is demanded, then revert to conventional four stroke cycle non-compound mode operation when high engine power is demanded, without stopping the engine.
    Type: Application
    Filed: June 5, 2008
    Publication date: December 10, 2009
    Inventor: Mark Dixon Ralston
  • Patent number: 7547539
    Abstract: Disclosed is a reaction apparatus for organic and/or other substance(s) employing supercritical fluid(s) and/or subcritical fluid(s) permitting injection of organic substance(s) and/or other reactant substance(s) in homogeneous state(s) to reactor(s) without occurrence of clogging at location(s) of such injection, and also permitting actuation to occur in industrial fashion and at high energy efficiency. Reactor(s) (12) of this reaction apparatus comprise cylinder(s) (12a) and piston(s) (12b) provided at such cylinder(s) (12a).
    Type: Grant
    Filed: March 6, 2002
    Date of Patent: June 16, 2009
    Assignees: Yanmar Co., Ltd.
    Inventors: Makoto Ikegami, Ken Kawabe
  • Patent number: 7458216
    Abstract: An exhaust heat recovery apparatus (functioning as a Stirling engine), which is installed in, for example, an exhaust passage of an internal combustion engine and an exhaust passage of factory exhaust heat as restraining reduction in exhaust heat recovery efficiency, is installed in a device installing surface formed in the heat medium passage so that the device installing surface and a heater connecting side end surface of a high temperature side cylinder become parallel and the device installing surface and a cooler connecting side end surface of a low temperature side cylinder become parallel. The high temperature side cylinder is arranged at an upstream side of a direction of exhaust flow. The low temperature side cylinder is arranged at a downstream side of the high temperature side cylinder.
    Type: Grant
    Filed: February 3, 2006
    Date of Patent: December 2, 2008
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroshi Yaguchi, Daisaku Sawada
  • Patent number: 7458215
    Abstract: The present invention provides a stirling engine, which is capable of reducing a frictional loss and eliminating possibility of deterioration of a heat exchanger due to lubricant oil applied to piston rings and the like. The stirling engine includes cylinders (22,32), pistons (21,31) reciprocating inside the cylinder while keeping an air-tight condition between the piston and the cylinder by means of a gas bearing (48), and an linear approximation mechanism (50) coupled directly or indirectly to the piston and disposed so that the piston may make approximately linear motion when the piston reciprocates inside the cylinder. The stirling engine has a piston engine which is in a ringless (i.e., without piston rings) and oilless (i.e., without lubricant oil) state so as to reduce the frictional loss and to prevent the deterioration of the heat exchanger by the lubricant oil.
    Type: Grant
    Filed: September 24, 2004
    Date of Patent: December 2, 2008
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroshi Yaguchi, Daisaku Sawada
  • Patent number: 7448213
    Abstract: A heat energy recovery apparatus include a compressor which has a piston for compressing sucked-in working gas; a heat exchanger which makes the working gas compressed by the compressor absorb heat of high temperature fluid; an expander which has a piston to be moved under pressure by expansion of the heat-absorbed working gas; and an accumulator which stores the working gas compressed by the compressor when required output is low or heat receiving capacity of the working gas is small. The apparatus preferably include a blocking unit which blocks discharge of the working gas from the expander when the heat receiving capacity of the working gas is small and the compressed working gas to the accumulator is being stored.
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: November 11, 2008
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Shinichi Mitani
  • Publication number: 20080053093
    Abstract: Disclosed herein are a uniform pressure unequal surface engine and an engine for power generators using the same. The uniform pressure unequal surface engine includes a kernel cylinder having a fuel supply unit. A kernel piston is airtightly provided in the kernel cylinder and reciprocated by explosive force when fuel is burnt, thus providing rotating force to a rotating shaft. A pressure reducing cylinder is connected to the kernel cylinder via an openable exhaust gas pipe, has a relatively larger inner diameter than the kernel cylinder, and has no fuel supply unit.
    Type: Application
    Filed: June 29, 2007
    Publication date: March 6, 2008
    Inventor: Chang Sun Kim
  • Publication number: 20070227144
    Abstract: An exhaust heat recovery apparatus includes: an exhaust heat recovery unit that produces motive power by recovering thermal energy from exhaust gas discharged from a heat engine; an electric generator that is driven by the exhaust heat recovery unit; a first power transmission-switching device that switches between connection and disconnection between the heat engine and the exhaust heat recovery unit; and a second power transmission-switching device that switches between connection and disconnection between the exhaust heat recovery unit and the electric generator, wherein the heat engine or the electric generator is selectively connected to the exhaust heat recovery unit, depending on the operational status of the heat engine. The exhaust heat recovery apparatus makes it possible to effectively use surplus motive power produced by an exhaust heat recovery unit.
    Type: Application
    Filed: March 28, 2007
    Publication date: October 4, 2007
    Inventors: Hiroshi Yaguchi, Daisaku Sawada, Shinichi Mitani
  • Patent number: 7273023
    Abstract: A steam enhanced dual piston cycle engine utilizes a unique dual piston apparatus that includes: a first cylinder housing a first piston therein, wherein the first piston performs only intake and compression strokes; a second cylinder housing an inner power piston that forms an inner internal chamber of the second cylinder, and either a ring-shaped outer power piston surrounding the inner power piston, wherein the outer power piston forms an outer internal chamber of the second cylinder and is configured to convert engine heat into additional work, and/or an outer boiler which is configured to produce steam to be converted into additional work.
    Type: Grant
    Filed: April 18, 2006
    Date of Patent: September 25, 2007
    Assignee: Tour Engine, Inc.
    Inventors: Benjamin H. Tour, Oded Tour
  • Publication number: 20070214789
    Abstract: A vehicle or stationary power plant having an internal combustion engine as a drive source and having components adapted to be supplied with heat from a medium accommodated in a closed loop. The turbine of the exhaust gas turbocharger provided for turbocharging the internal combustion engine acts as a heat source. A heat exchanger is disposed externally on the turbine housing and can be incorporated or switchable into the medium loop.
    Type: Application
    Filed: March 14, 2007
    Publication date: September 20, 2007
    Inventor: Erwin Stiermann
  • Patent number: 7104061
    Abstract: A fluid machine for a waste heat collecting system for an internal combustion engine has an object to make most use of the collected waste heat and an operation of a compressor, an alternator or the like by a rotational driving force from an expansion device function well even during an engine running is stopped. The fluid machine according to the present invention has a pulley connected to the engine, an expansion device for generating a rotational driving force from the collected waste heat, a compressor device driven by the pulley and the expansion device, wherein a rotating shaft is commonly used for the pulley, the expansion device and the compressor device. The expansion device is an expansion device for changing its expansion volume, so that the Rankine cycle for collecting the waste heat can be operated most effectively.
    Type: Grant
    Filed: April 20, 2004
    Date of Patent: September 12, 2006
    Assignee: Denso Corporation
    Inventors: Shigeru Hisanaga, Yasushi Yamanaka
  • Patent number: 7096833
    Abstract: In a pair of preceding and following cylinders whose exhaust and intake strokes overlap each other, intake air supplied to the preceding cylinder (2A, 2D) is supercharged by a turbocharger (23) to produce combustion at a “lean” air-fuel ratio in the preceding cylinder (2A, 2D), and burned gas discharged from the preceding cylinder (2A, 2D) is introduced into the following cylinder (2B, 2C) through an intercylinder gas channel (22). Combustion in the following cylinder (2B, 2C) is made at an air-fuel ratio equal to or smaller than the stoichiometric air-fuel ratio by supplying fuel to the burned gas of a “lean” air-fuel ratio introduced from the preceding cylinder (2A, 2D), and gas discharged from the following cylinder (2B, 2C) is led to an exhaust passage (20) provided with a three-way catalyst (30).
    Type: Grant
    Filed: February 6, 2003
    Date of Patent: August 29, 2006
    Assignee: Mazda Motor Corporation
    Inventors: Mitsuo Hitomi, Kouji Asanomi, Yoshiyuki Shinya
  • Patent number: 6829892
    Abstract: A multi-cylinder diesel engine provides split mode operation in which one or more cylinders function as air pumps. Compressed air supplied by the cylinders is amplified and stored to a high pressure air tank from which it may be used to run air brakes or other systems. Improved energy density is achieved over prior art vehicle air systems and an auxiliary air compressor is eliminated.
    Type: Grant
    Filed: February 5, 2003
    Date of Patent: December 14, 2004
    Assignee: International Truck Intellectual Property Company, LLC
    Inventor: Gerald L. Larson
  • Publication number: 20040093868
    Abstract: A thermosiphon which can be manufactured easily at low costs, having excellent resistance to pressure, without the circulation of a working fluid being hindered. A condenser 3 includes a condensing section 4 composed of extruded members in which a plurality of fine pores 7 are formed, a branching section 5 provided on an upstream side of the fine pores 7 to supply a gaseous working fluid returned from a gas pipe 12 into each of the fine pores 7, and a collecting section 6 provided on a downstream side of the fine pores 7 to collect the working fluid condensed inside the fine pores 7 and then supply the same into a liquid pipe 9. The gas pipe 12 is connected to an upper portion of the branching section 5 and the liquid pipe 9 is connected to a lower portion of the collecting section 6.
    Type: Application
    Filed: November 4, 2003
    Publication date: May 20, 2004
    Applicant: Twinbird Corporation
    Inventor: Kazuya Sone
  • Patent number: 6725662
    Abstract: In a drive system, there is provided a waste heat recovering device forming a Rankine cycle by an evaporator for heating water with waste heat of an internal combustion engine to generate high-pressure vapor, the internal combustion engine being connected to a transmission, a displacement-type expander for converting high-pressure vapor generated by the evaporator to an output with constant torque, a condenser for liquefying low-pressure vapor discharged from the expander, and a feed pump for supplying water liquefied by the condenser to the evaporator. The expander is connected to a power generator/motor via a planetary gear mechanism, and the expander is connected to an output shaft of the internal combustion engine via the planetary gear mechanism and a belt-type continuously variable transmission.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: April 27, 2004
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Tsuyoshi Baba, Hiroyuki Niikura, Yasunobu Kawakami, Hiroyuki Horimura, Tsuneo Endoh
  • Publication number: 20040050046
    Abstract: An engine includes a crankshaft, rotating about a crankshaft axis of the engine. A power piston is slidably received within a first cylinder and is operatively connected to the crankshaft via first linkage system. The power piston reciprocates through a power stroke and an exhaust stroke of a four stroke cycle during a single rotation of the crankshaft. A compression piston is slidably received within a second cylinder and operatively connected to the crankshaft via second linkage system. The first and second linkage systems share no common mechanical link. The compression piston reciprocates through an intake stroke and a compression stroke of the same four stroke cycle during the same revolution of the crankshaft. The power piston leads the compression piston by a phase shift angle that is substantially equal to or greater than zero degrees and less than 30 degrees.
    Type: Application
    Filed: July 8, 2003
    Publication date: March 18, 2004
    Inventor: Carmelo J. Scuderi
  • Publication number: 20030115877
    Abstract: In a drive system, there is provided a waste heat recovering device forming a Rankine cycle by an evaporator for heating water with waste heat of an internal combustion engine to generate high-pressure vapor, the internal combustion engine being connected to a transmission, a displacement-type expander for converting high-pressure vapor generated by the evaporator to an output with constant torque, a condenser for liquefying low-pressure vapor discharged from the expander, and a feed pump for supplying water liquefied by the condenser to the evaporator. The expander is connected to a power generator/motor via a planetary gear mechanism, and the expander is connected to an output shaft of the internal combustion engine via the planetary gear mechanism and a belt-type continuously variable transmission.
    Type: Application
    Filed: November 14, 2002
    Publication date: June 26, 2003
    Inventors: Tsuyoshi Bara, Hiroyuki Niikura, Yasunobu Kawakami, Hiroyuki Horimura, Tsuneo Endoh
  • Patent number: 6581381
    Abstract: Disclosed are an adiabatic engine, an engine capable of reusing exhausted energy, and a high pressure jet assembly. The adiabatic engine has: a cylinder having an inner side surface, on which the adiabatic member is formed extending longer than at least a stroke distance; a cylinder head having a lower surface, on which the adiabatic member is formed; a suction valve and an exhaust valve respectively having a lower surface, on which the adiabatic member is formed; and a piston having an upper surface and an outer side surface, on each of which the adiabatic member is formed, the adiabatic member formed on the outer side surface of the piston has a vertical length longer than at least the stroke distance, the piston having a sealing means fitted around a circumferential outer surface of the piston under the adiabatic member on the outer side surface of the piston.
    Type: Grant
    Filed: January 28, 2002
    Date of Patent: June 24, 2003
    Inventor: Chang Sun Kim
  • Publication number: 20030089108
    Abstract: Disclosed are an adiabatic engine, an engine capable of reusing exhausted energy, and a high pressure jet assembly. The adiabatic engine has: a cylinder having an inner side surface, on which the adiabatic member is formed extending longer than at least a stroke distance; a cylinder head having a lower surface, on which the adiabatic member is formed; a suction valve and an exhaust valve respectively having a lower surface, on which the adiabatic member is formed; and a piston having an upper surface and an outer side surface, on each of which the adiabatic member is formed, the adiabatic member formed on the outer side surface of the piston has a vertical length longer than at least the stroke distance, the piston having a sealing means fitted around a circumferential outer surface of the piston under the adiabatic member on the outer side surface of the piston.
    Type: Application
    Filed: January 28, 2002
    Publication date: May 15, 2003
    Inventor: Chang Sun Kim
  • Patent number: 6553977
    Abstract: The present invention concerns a process of construction of a five-stroke internal combustion engine comprising especially at least one low-pressure cylinder (1) functioning in a two-stroke mode located between two high-pressure combustion cylinder (2,3) functioning in a four-stroke mode, the work chamber (C2, C3) of each combustion cylinder (2,3) being capable of communicating with the work chamber (C1) of the low-pressure cylinder (1) via a decanting valve (9) associated with the combustion cylinders (2,3) and a decanting manifold (16,17), and comprising a means of excess feeding the combustion cylinders (2,3), this process being characterized by the fact that the volume compression ratio of the combustion cylinders is relatively low, so as to be able to be highly supercharged. The invention can be used in the field of gasoline engine or Diesel engine.
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: April 29, 2003
    Inventor: Gerhard Schmitz
  • Publication number: 20030070635
    Abstract: A four stroke engine including a crankshaft. A power piston within a first cylinder connected to the crankshaft such that the power piston reciprocates through a power stroke and an exhaust stroke. A compression piston within a second cylinder is connected to the crankshaft such that the compression piston reciprocates through an intake stroke and a compression stroke. A gas passage interconnects the first and second cylinders and includes an inlet valve and an outlet valve defining a pressure chamber therebetween. An inlet manifold is in fluid communication with an inlet valve of the second cylinder. A bypass valve is in fluid communication with the second cylinder and the inlet manifold, wherein during a compression stroke the bypass valve allows a portion of the air to bypass the inlet valve and exhaust into the inlet manifold to provide a variable compression ratio.
    Type: Application
    Filed: October 31, 2002
    Publication date: April 17, 2003
    Applicant: SCUDERI GROUP LLC
    Inventors: Carmelo J. Scuderi, Stephen P. Scuderi, James V. Masi
  • Patent number: 6481206
    Abstract: A method for combusting fuel in an engine involving decreasing a first volume of a gas to a second volume while increasing a pressure and a temperature thereof, then increasing the second volume to a third volume at a constant pressure while adding heat until a predetermined temperature is obtained, and finally increasing the third volume to a fourth volume while adding more heat and decreasing the pressure thereof at the predetermined temperature. Also disclosed is a compound engine including an limited temperature cycle engine which produces exhaust that drives a Lenoir cycle apparatus.
    Type: Grant
    Filed: September 17, 2001
    Date of Patent: November 19, 2002
    Inventor: Pao C. Pien
  • Patent number: 6393841
    Abstract: An Internal combustion engine is provided having separately designated combustion and exhaust powered cylinders, for implementing a dual exhaust expansion system which derives additional power from the combustion exhaust gases of each cylinder. The piston in each combustion exhaust cylinder is timed such that one leads the other by approximately 0-180 degrees crankshaft angle. Ignition of a first combustible air/fuel mixture produces combustion gases. Expansion of the combustion gases drives the first combustion piston during a first power stroke. Combustion gases are expelled from the cylinder to a second cylinder via fluidic passage to produce a second power stroke in the second cylinder, from there the combustion gasses are exhausted to atmosphere. Ignition of a second combustible air/fuel mixture produces combustion gases. Expansion of the combustion gases drives the second combustion piston during a third power stroke.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: May 28, 2002
    Inventor: Norman Robert Van Husen