Fluid Motor Means Driven By Waste Heat Or By Exhaust Energy From Internal Combustion Engine Patents (Class 60/597)
  • Patent number: 6470680
    Abstract: A manifold alternator generator including a turbine located proximal to a flow of exhaust gases in an internal combustion engine where the exhaust gases energize the turbine and produce rotation of an output shaft. The output shaft is connected to a rotor that is engaged with a generator such that the rotation of the turbine and output shaft generates electrical power. The manifold alternator generator may be used in combination with electromagnetic valve actuators and a flywheel alternator/starter. A processor may be used to optimize the performance of the manifold alternator generator and other system components.
    Type: Grant
    Filed: March 15, 2000
    Date of Patent: October 29, 2002
    Inventor: Charl E Janeke
  • Patent number: 6434937
    Abstract: A multi-energy system 9 including a gas heat pump type air conditioner 10 in which a compressor 16 equipped in an outdoor unit 11 is driven by a gas engine 25, and a power generating apparatus 30 having a power generator 31 which is driven by the gas engine 25 to output AC power, characterized in that the power generating apparatus 30 further includes an AC/DC converter 32 converter for converting AC power output from the power generator 31 to DC power, and a DC/AC converter 33 for converting the DC power thus obtained in the AC/DC converter 32 to AC power having a specified frequency and then outputting the AC power thus obtained to electric equipment.
    Type: Grant
    Filed: May 14, 2001
    Date of Patent: August 20, 2002
    Assignee: Sanyo Electric Co., Ltd.
    Inventor: Masaki Takamatsu
  • Patent number: 6434936
    Abstract: An exhaust driven turbofan to operates a generator, for generating electrical energy, which is stored in a battery until needed. An air blower is powered by energy from the battery, to generate pressurized air. The pressurized air passes into the piston chamber when the gas pedal is depressed, independent of the rotation of the crank shaft. An exhaust blower powered by the battery, sucks air from the piston chamber during the exhaust stroke, ensuring complete removal of the exhaust gasses. Valve overlap timing is no longer needed, eliminating the dwell time between intake and exhaust gasses. A non-ferrous wheel having ferrous portions is anchored in spaced relation about the outer periphery of the non-ferrous wheel, to assist the rotation of the crank shaft. At least one electromagnet is selectively energized to aid rotation of the non ferrous wheel.
    Type: Grant
    Filed: April 25, 2001
    Date of Patent: August 20, 2002
    Inventor: Daljit Singh
  • Patent number: 6397596
    Abstract: An electrical generation system that fully integrates heat utilization during the process. The system has two inputs: intake air and diesel fuel. Its outputs are some exhaust gas (carbon dioxide and nitrogen compounds), electricity, and extracted sulfur compounds. There are four interconnected systems: the turbine-diesel-generator system, the refrigerant gas system, the ammonia system and the water handling system. The refrigerant system uses R 22 (Freon) gas. Using heat extracted from the diesel engine and other components of the system, this gas is heated and is used to drive a turbine. The ammonia system is primarily used to condense the R 22. The water system is primarily used to cool the exhaust gasses from the diesel engine. As discussed below, the systems overlap so that, for example, one system is cooled while pre-heating another.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: June 4, 2002
    Inventor: Heather Boyle
  • Patent number: 6367260
    Abstract: A means for eliminating a frozen or near frozen state in a drain of the condensed water generated by the action of an exhaust gas heat exchanger is provided. The condensed water separated from the exhaust gas in a silencer (31) is passed through a waste water trap provided with the joint (34) and discharged to the outside. The joint (34) also has a passage provided therein for circulating a heat transfer medium through an externally (separately) installed heat exchanger (52A). When the engine (2) is started, it is judged, based on the temperature of the waste water trap or the water measured by a sensor (53), whether the frozen state is present or not. When it is judged that the frozen state is present, a water pump 10 is switched on for circulating the heat transfer medium through the waste water trap.
    Type: Grant
    Filed: October 25, 2000
    Date of Patent: April 9, 2002
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Akihito Kasai, Yoshinori Nakagawa
  • Publication number: 20020035834
    Abstract: An apparatus for converting between reciprocal piston motion and rotary shaft motion. A unique H-shaped piston rod configuration and corresponding cylinder assembly for improving the efficiency of internal and external combustion engines. A Stirling engine having improved efficiency due to the use of heat exchangers that are integral with the cylinder assemblies. A Stirling engine employing a novel means for rapidly varying power output.
    Type: Application
    Filed: September 26, 2001
    Publication date: March 28, 2002
    Inventor: Charles H. Cammack
  • Publication number: 20020017098
    Abstract: An exhaust gas alternator system for a diesel powered motor vehicle including a Stirling engine operating through a heat input of waste heat from a diesel engine exhaust to drive an electrical alternator. The cooler of the Stirling engine receives liquid engine coolant. An auxiliary diesel fuel burner may be operated to provide heat input for said Stirling engine when the diesel engine is not operated. The system may be used in an exhaust circuit having a catalytic converter.
    Type: Application
    Filed: June 14, 2001
    Publication date: February 14, 2002
    Inventor: Lennart Johansson
  • Publication number: 20020017099
    Abstract: A thermal engine including a positive displacement compressor (A) having at least one rotatable vane partly defining at least one of the variable chambers within the compressor (A) having at least one rotatable vane partly defining at least one of the variable volume chambers within the compressor, a thermal chamber (D) in fluid communication with the outlet of the compressor (A), the thermal chamber (D) having heat transfer means for transferring heat from a heat source to the working fluid; and a positive displacement motor (B) having at least one rotatable vane partly defining at least one of the variable volume chambers within the motor and drive means for driving the compressor and an external load wherein, in use the flow of working fluid through the thermal chamber is substantially continuous.
    Type: Application
    Filed: February 6, 2001
    Publication date: February 14, 2002
    Inventor: Glenn Alexander Thompson
  • Publication number: 20020007636
    Abstract: A thermal energy retrieval system in which waste heat generated by an internal combustion engine is used to evaporate an organic working fluid in an evaporator. The evaporated working fluid is passed through a turbine to generate mechanical or electrical power which could be used to supplement the work done by the internal combustion engine. A unitary control valve is disposed between a feed pump and the evaporator to automatically regulate the flow of working fluid to the evaporator in accordance with the sensed temperature of the working fluid at its exit from the evaporator. This ensures the optimization of the thermodynamic efficiency of the system, which in turn leads to the provision of a more compact system useful as an add-on to motive mounted engines.
    Type: Application
    Filed: October 2, 2001
    Publication date: January 24, 2002
    Inventor: Eli Hay
  • Patent number: 6334435
    Abstract: The invention concerns a method for operating a pollution-free engine chamber by injecting supplementary compressed air, comprising a suction and compression chamber (1) and an expansion and exhaust chamber (4) independent of each other, which consists in separating the pressure increase process in said expansion chamber by dividing it into the two chambers, an engine chamber (2A) which receives high pressure air and a working chamber (2B) which receives the supplementary compressed air with lower pressure, separated by a quick-operating plug (2c) which communicates them suddenly thereby causing, owing to difference in pressure levels, a wave expanding the engine gas which flows into the working chamber generating a compressive shock wave substantially increasing the pressure level in the chamber shortly before it is communicated with the expansion and exhaust cylinder (4) to produce a work.
    Type: Grant
    Filed: January 4, 2001
    Date of Patent: January 1, 2002
    Inventors: Guy Negre, Cyril Negre
  • Publication number: 20010042374
    Abstract: A multi-energy system 9 including a gas heat pump type air conditioner 10 in which a compressor 16 equipped in an outdoor unit 11 is driven by a gas engine 25, and a power generating apparatus 30 having a power generator 31 which is driven by the gas engine 25 to output AC power, characterized in that the power generating apparatus 30 further includes an AC/DC converter 32 converter for converting AC power output from the power generator 31 to DC power, and a DC/AC converter 33 for converting the DC power thus obtained in the AC/DC converter 32 to AC power having a specified frequency and then outputting the AC power thus obtained to electric equipment.
    Type: Application
    Filed: May 14, 2001
    Publication date: November 22, 2001
    Applicant: Sanyo Electric Co., Ltd.
    Inventor: Masaki Takamatsu
  • Patent number: 6314732
    Abstract: A hydrogen-ozone fueled power plant system that can be used for a variety of purposes including vehicles such as automobiles and trucks. The system includes a master generator for producing hydrogen and oxygen from water, another generator for producing ozone using the oxygen produced from the master generator and apparatus for supplying the hydrogen and ozone to the combustion chamber of an internal combustion engine. The steam produced during the combustion cycle is uniquely condensed into water that is returned to the fuel storage tank component of the system that supplies water to the master generator.
    Type: Grant
    Filed: September 19, 2000
    Date of Patent: November 13, 2001
    Inventor: Theadore Lookholder
  • Patent number: 6301890
    Abstract: A system for preparing gas mixtures for combustion, reducing emissions during combustion and treating and purifying resultant exhaust gas mixtures includes an exhaust gas scrubbing and condensing heat exchanger which cleans, cools and dries an exhaust gas mixture, a source of clean water which supplies clean water for heating and humidifying, a steam producer for converting clean water to steam, a steam boiler for increasing the energy of the steam and the energy of a fluid compound gas. An exhaust gas turbine, a steam turbine, and a fluid compound gas turbine all mounted on a common shaft are operative to convert energy in the exhaust gas mixture, the steam, and the fluid compound gas to mechanical energy on the common shaft. The system is particularly suited for use with an internal combustion engine.
    Type: Grant
    Filed: July 31, 2000
    Date of Patent: October 16, 2001
    Assignee: MaK Motoren GmbH & Co. KG
    Inventor: Herbert Zeretzke
  • Patent number: 6276138
    Abstract: A multi-cylinder Otto cycle internal combustion direct compound engine for motor vehicles with an exhaust-gas turbocharger providing direct turbo compounding upon the engine control module receiving a speed signal indicating that the vehicle is traveling in a predetermined cruise-speed mode. Upon receipt of the signal the module turns-off each fuel injector feeding a second group of the cylinders, while maintaining fuel injection to a first group of cylinders and fully opening the electronic intake-air induction throttle. As a result the unfired second group of cylinder pistons are driven solely by compressed inlet-air pressure during the time the vehicle travels at or above a predetermined light-load cruising-speed, while positive pumping work occurs in all the cylinders. The engine thus conserves fuel during light load cruising speed while maintaining low pollutant emissions.
    Type: Grant
    Filed: September 10, 1999
    Date of Patent: August 21, 2001
    Assignee: Ford Global Technologies, Inc.
    Inventor: Peter Damien Welch
  • Patent number: 6256990
    Abstract: An exhaust manifold integrally cast with a turbine housing for a turbocharger has pipe portions having exhaust gas flow paths and a plurality of ports adapted to receive an exhaust gas; flanges respectively extending from the ports; a converged portion connected to the pipe portions and adapted to converge the exhaust gas flow paths in the pipe portions; and a turbine housing integrally connected to the converged portion and having a circular exhaust gas flow path therein. The exhaust gas flow path in the converged portion is in a tangent direction relative to the circular exhaust gas flow path in the turbine housing. A neck portion that connects an outer surface of the turbine housing to an outer surface of the converged portion at a particular angle has a radius of curvature that is relative to the distance in a tangent direction of the exhaust gas flow path from the center of the turbine housing to the converged portion.
    Type: Grant
    Filed: December 28, 1999
    Date of Patent: July 10, 2001
    Assignee: Hitachi Metals, Ltd.
    Inventor: Kenji Itoh
  • Patent number: 6185938
    Abstract: A five-cylinder turbocharged internal combustion engine has an exhaust manifold (6-10) connected to a turbine housing (13). Four exhaust manifold conduits (7, 8, 9, 10) lead in pairs to the inlets (11, 12) of a twin-entry turbine (14). The fifth exhaust manifold conduit (6) is drawn past the turbine housing and opens into an exhaust pipe (18) on the downstream side of the turbine housing.
    Type: Grant
    Filed: November 16, 1999
    Date of Patent: February 13, 2001
    Assignee: AB Volvo
    Inventors: Lennarth Zander, Lars Nilsson, Patrick Olsson, Fredrik Wemmert, Johan Tollmen
  • Patent number: 6066898
    Abstract: A microturbine power generating system includes a combustor and a gas compressor that provides a flow of natural gas to a combustor. The flow of natural gas is regulated by varying the speed of the gas compressor to maintain gas compressor discharge pressure at a set point. The system further includes a turbine and an electrical generator that is driven by the turbine during a run mode of operation. A rectifier and a main inverter convert an output of the electrical generator into fixed frequency ac power during the run mode. A secondary inverter operates an electric motor of the gas compressor at the variables speeds during the run mode. During a startup mode, however, the main inverter operates the gas compressor motor, and the secondary inverter operates the electrical generator as a starter motor.
    Type: Grant
    Filed: August 14, 1998
    Date of Patent: May 23, 2000
    Assignee: AlliedSignal Inc.
    Inventor: Davis Jensen
  • Patent number: 6062024
    Abstract: An exhaust manifold and a turbine housing for a turbo-charged five-cylinder engine are cast as a single piece. This arrangement renders unnecessary a flanged connection between a separate exhaust manifold and turbine housing. The one-piece design provides optimum gas paths to obtain a good response.
    Type: Grant
    Filed: April 9, 1998
    Date of Patent: May 16, 2000
    Assignee: AB Volvo
    Inventors: Lennarth Zander, Ingemar Martinsson, Jan Erling Rydquist
  • Patent number: 5881559
    Abstract: A hybrid electric vehicle which is driven by a motor powered with electric power generated by an engine, wherein the cylinder, piston, and sub-combustion chamber of the engine have insulation structure so that heat sufficient for evaporating fed fuel is held in the sub-combustion chamber.
    Type: Grant
    Filed: July 26, 1996
    Date of Patent: March 16, 1999
    Assignee: Isuzu Ceramics Research Institute Co., Ltd.
    Inventor: Hideo Kawamura
  • Patent number: 5857336
    Abstract: A power plant system particularly useful for hybrid vehicles driven by electric motors, the power plant system including a positive displacement engine with a bifurcated exhaust forming first and second exhaust passages for expansion gases, each passage being separately controlled by an independently operated engine exhaust valve, the first exhaust passage supplying expansion gases to a turbine connected to a compressor delivering compressed air to the engine and the second exhaust passage supplying expansion gases to a turbine connected to an electric generator, the power plant system having a system control module independently controlling each exhaust valve for optimum air compression for the load and speed of engine operation.
    Type: Grant
    Filed: May 3, 1996
    Date of Patent: January 12, 1999
    Inventors: Marius A. Paul, Ana Paul
  • Patent number: 5799489
    Abstract: A torque compensating apparatus and method for a turbo-charger, includes a sensor for detecting a crank angle of a crank, a control unit for generating a control signal according to the detection, a compressing mechanism for selectively generating pressure toward a turbine, and a switch circuit for selectively activating the compressing mechanism according to the control signal so as to continuously rotate the turbine even during an intake stroke.
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: September 1, 1998
    Assignee: Hyundai Motor Company, Ltd.
    Inventor: Jun Yeop Lee
  • Patent number: 5787711
    Abstract: An internal combustion engine cooling system incorporating a motor-assisted turbofan is disclosed. The turbine-driven fan is increased in rotational speed by energizing a motor attached to the turbine fan shaft from an outside power source to provide required cooling air flow. The cooling air system of the invention also includes a ducted fan for supplying cooling air for one or more heat exchangers, and is controlled via inputs from an engine speed sensor for providing a motor operating signal, a flow sensor downstream of the heat exchangers for providing a motor operating signal, and temperature sensors located throughout the cooling circuits.
    Type: Grant
    Filed: September 16, 1996
    Date of Patent: August 4, 1998
    Assignee: Turbodyne Systems, Inc.
    Inventors: William E. Woollenweber, Edward M. Halimi
  • Patent number: 5775105
    Abstract: This invention comprises a cam driven plug that opens and closes exhaust valve ports in an engine cylinder and while it moves to open forms an optimum variable geometry nozzle for the exhaust gasses exiting from the cylinder to impart maximum velocity energy to these exhaust gasses for delivery first at supersonic speed and then lower velocities as the cylinder pressure decays to drive a turbine that delivers power to the shaft of the internal combustion engine or other service loads.
    Type: Grant
    Filed: March 27, 1997
    Date of Patent: July 7, 1998
    Inventor: Herbert G. Zinsmeyer
  • Patent number: 5713200
    Abstract: A simple exhaust system is disclosed with improved operational reliability and an increased service life for a turbocharged internal combustion engine, in which system both the advantages of shock-wave charging and those of pulse-converter charging are used, depending on the operating state of the internal combustion engine. These advantages are achieved by virtue of the fact that extension pieces (12, 13) are formed for the shock pipes (6, 7) and are arranged upstream of the connection line (8, 9) furthest away from the exhaust turbine (5). Each shock pipe (6, 7) is connected to a corresponding extension piece (12, 13). The interconnection conduit/s (14) is/are formed between the extension pieces (12, 13). Each interconnection conduit (14) has a cross-sectional constriction (15).
    Type: Grant
    Filed: September 5, 1996
    Date of Patent: February 3, 1998
    Assignee: Asea Brown Boveri AG
    Inventors: Jozef Baets, Ennio Codan, Christoph Mathey
  • Patent number: 5579640
    Abstract: A hydropneumatic powertrain includes a fluidic driver connected in parallel with first and second liquid tanks connected, respectively, with first and second gas vessels. The gas within each gas vessel is in fluid communication with the liquid within the corresponding liquid vessel. A prime mover drives a pump to pump liquid alternately into one of the two liquid tanks connected in parallel with the pump. Switch valving directs the discharge of the pump to either the first liquid tank or the second liquid tank, while the liquid tank not receiving liquid from the pump discharge is discharging its liquid, driven by expansion of gas within the corresponding gas vessel, to drive the fluidic driver which, in turn, drives the drive wheels of the vehicle. Each gas tank is equipped with a heater and a cooler whereby the gas vessel, in the compression portion of the cycle, is cooled while the other gas vessel is heated for expansion of the gas contained therein.
    Type: Grant
    Filed: April 27, 1995
    Date of Patent: December 3, 1996
    Assignee: The United States of America as represented by the Administrator of the Environmental Protection Agency
    Inventors: Charles L. Gray, Jr., Karl H. Hellman
  • Patent number: 5400596
    Abstract: This invention relates to the use of the exhaust of an internal combustion engine to contribute to forward motion by a pneumatic device connected directly to the drive train and a motor generator connected to the drive train to contribute to acceleration and to provide regenerative braking. All of the automobiles electrical needs are supplied by recaptured momentum when driving conditions allow. Surplus electricity is stored to further contribute to acceleration.
    Type: Grant
    Filed: November 29, 1991
    Date of Patent: March 28, 1995
    Inventor: David J. Shlien
  • Patent number: 5329770
    Abstract: An exhaust gas drive system for engine accessories includes a turbine positioned in the exhaust system of the engine of a vehicle for rotation of the turbine by the pressure of the exhaust gas. The turbine is connected through a reduction transmission to a hydraulic pump which is fluidically connected to respective hydraulic motors which drive the accessories. Communication of exhaust gas to the turbine is controlled by a waste gate. The flow of hydraulic fluid to the hydraulic motors is controlled by actuator valves which operate in an on/off manner or are adjustable for variable control of the accessories. A computer monitors engine speed and controls the position of the waste gate to thereby maintain a substantially constant speed of the turbine. Alternatively, a secondary output shaft of the reduction transmission has a drive pulley thereon for belt driving an accessory having a driven pulley on an input shaft thereof.
    Type: Grant
    Filed: May 6, 1993
    Date of Patent: July 19, 1994
    Inventor: Michael S. Ward
  • Patent number: 5313797
    Abstract: A rotary power transformer employing the exhaust gases of an internal combustion engine as the fluid medium for transforming pressure into a rotative motion. It includes a circular housing and a central hollow driven shaft extendable through and rotatable relative to the housing. A central rotor of generally cylindrical shape has a plurality of equispaced vanes on the outer periphery thereof. A rotor boss is nestably received at opposite sides of each vane of the rotor. The rotor side walls are fixed to the driven shaft. An outer stator circumscribes and is in spaced relationship with the rotor for defining a circular expansion chamber between the stator and rotor and has a plurality of equispaced inwardly facing vanes defining on the inboard periphery of the stator.
    Type: Grant
    Filed: March 1, 1993
    Date of Patent: May 24, 1994
    Inventor: Howard Bidwell
  • Patent number: 5186081
    Abstract: The torque output of a fluidic torque converter that is driven by a supercharged engine and whose output is coupled to the input of a hydraulic automatic transmission is determined and compared with a transmission input torque limit which is a function of the transmission gear. The boost pressure output of the engine supercharger is limited based on this comparison to closed loop limit the torque output of the torque converter at the transmission input torque limit.
    Type: Grant
    Filed: June 7, 1991
    Date of Patent: February 16, 1993
    Assignee: General Motors Corporation
    Inventors: Daniel J. Richardson, Michael D. Parr
  • Patent number: 5138840
    Abstract: According to the present invention, a power transmission apparatus for an internal combustion engine (2) having a supercharger (1) attached thereto is constructed such that thermal energy included in exhaust gas discharged from a turbine (T) in the supercharger is recovered by a waste heat recovering turbine (3) thereby to drive the waste heat recovering turbine (3), auxiliary units (9), (10) for a cooling system of the internal combustion engine (2) are driven by power generated by the waste heat recovering turbine (3) which has been driven and the power generated by the wasted heat recovering turbine (3) is then transmitted to a crankshaft (12) of the internal combustion engine (2) via a coupling (6) for interrupting power transmission in an operational region where the internal combustion engine is rotated at a low speed or in an operational region where the internal combustion engine is rotated under a low load.
    Type: Grant
    Filed: December 5, 1989
    Date of Patent: August 18, 1992
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventors: Tetsuro Oguchi, Hidetada Fukushima
  • Patent number: 5079913
    Abstract: A complex turbocharger compound engine system has a clutch disposed between the rotatable shaft of a turbine which is drivable by exhaust gases emitted from an engine and a power transmission device by which the rotatable shaft and the output shaft of the engine are operatively coupled to each other, a generator mounted on the rotatable shaft, and a rotary electric machine operatively coupled to the output shaft of the engine and operable selectively as a generator or as a motor. In a region in which the turbine operates with high efficiency, the region depending on operating conditions of the engine, the clutch is engaged to transmit rotative power of the turbine driven by the exhaust gases to the output shaft of the engine, thereby mechanically recovering the exhaust energy of the engine. In a region in which the turbine operates with low efficiency, the generator is driven by the turbine and the rotary electric machine is operated as a motor by the generated electric power.
    Type: Grant
    Filed: September 28, 1990
    Date of Patent: January 14, 1992
    Assignee: Isuzu Motors Limited
    Inventor: Keiji Kishishita
  • Patent number: 5074115
    Abstract: A turbocharger includes first and second turbines each having a turbine scroll for introducing exhaust gases from an engine, a first rotatable shaft having one end coupled to the first turbine and the other end to a compressor, a second rotatable shaft coupled to the second turbine, with a rotary electric machine mounted on the second rotatable shaft, and a clutch disposed between the first and second rotatable shafts, for selectively connecting and disconnecting the first and second rotatable shafts. The clutch is selectively engaged and disengaged and the rotary electric machine is operated selectively as a motor and a generator for effective recovery of exhaust gases emitted from the engine.
    Type: Grant
    Filed: September 28, 1990
    Date of Patent: December 24, 1991
    Assignee: Isuzu Motors Limited
    Inventor: Hideo Kawamura
  • Patent number: 5024057
    Abstract: An electric generator system drivable by the energy of exhaust gases emitted from an internal combustion engine includes two turbines drivable by the energy of exhaust gases from the internal combustion engine, the turbines having different capacities, and an electric generator mounted on a turbine shaft interconnecting the turbine impellers of the turbines. When the energy of exhaust gases emitted from the engine is larger, the turbine of the larger capacity is driven. When the exhaust energy is smaller, the turbine of the smaller capacity is driven.
    Type: Grant
    Filed: June 23, 1989
    Date of Patent: June 18, 1991
    Assignee: Isuzu Motors Limited
    Inventor: Hideo Kawamura
  • Patent number: 4918923
    Abstract: An exhaust-driven cooling system for an internal combustion engine includes a turbocooler having an exhaust-driven turbine and ducted fan means to generate a flow of cooling air for use in an internal combustion engine heat exchanger to dissipate heat losses of the engine and a control for the generation of cooling air. The system can provide internal combustion engines with substantially reduced temperatures and pressures for its exhaust gas, thrust usable as a motive force and exhaust system components and substantially improved reliability and efficiency.
    Type: Grant
    Filed: June 6, 1988
    Date of Patent: April 24, 1990
    Inventors: William E. Woollenweber, Niels J. Beck
  • Patent number: 4886978
    Abstract: An exhaust energy recovery apparatus for an engine has an induction generator drivable by exhaust gases emitted from the engine, and an induction motor drivable by electric power generated by the induction generator. The frequency of an exciting current supplied to the induction generator and the load being the induction motor are controlled so that the operation efficiency of the turbine will be maximized.
    Type: Grant
    Filed: May 31, 1988
    Date of Patent: December 12, 1989
    Assignee: Isuzu Motors Limited
    Inventor: Hideo Kawamura
  • Patent number: 4885911
    Abstract: An exhaust-driven cooling system for an internal combustion engine includes a turbocooler having an exhaust-driven turbine and fan means to generate a flow of cooling air for use in an internal combustion engine heat exchanger to dissipate heat losses of the engine. The system can provide internal combustion engines with substantially reduced temperatures and pressures for its exhaust gas and exhaust system components and substantially improved reliability and efficiency.
    Type: Grant
    Filed: February 24, 1988
    Date of Patent: December 12, 1989
    Inventors: William E. Woollenweber, Niels J. Beck
  • Patent number: 4864151
    Abstract: An exhaust gas turbine powered electric generating system for supplying electrical loads on a motor vehicle. The inlet of the gas turbine is supplied with the exhaust gas of an internal combustion engine. The effective turbine inlet area is controlled by a valve which is adjusted as a function of the output current of the generator. As generator output current increases the valve is adjusted to decrease turbine inlet area thereby increasing engine back pressure which tends to slow the engine down. An idle speed control is provided which in response to engine slow-down increases the amount of air and fuel supplied to the engine to thereby increase the exhaust gas mass flow supplied to the turbine.
    Type: Grant
    Filed: May 31, 1988
    Date of Patent: September 5, 1989
    Assignee: General Motors Corporation
    Inventors: Floyd A. Wyczalek, Stanley H. Mick
  • Patent number: 4805409
    Abstract: Disclosed is a type of an exhaust gas energy recovery method for an internal combustion engine of a type which incorporates a turbine generator driven by the exhaust gas energy of the internal combustion engine and in which the driving power of a motor driven by the power generated by the generator is added to the driving power of the internal combustion engine. The method also incorporates a control device for controlling the output torque of the motor in different forms at low and high speed areas within a variable control range of the rotation speed of the internal combustion engine. The motor is operated with constant torque characteristics at the low speed area and with reduced torque characteristics at the high speed area thereby enabling the exhaust gas energy to be efficiently recovered at an engine speed area where the ratio of engine-operating time is high.
    Type: Grant
    Filed: April 21, 1988
    Date of Patent: February 21, 1989
    Assignee: Hitachi. Ltd.
    Inventor: Hideaki Kobayashi
  • Patent number: 4769993
    Abstract: A turbocharger for an internal combustion engine is disclosed, including a turbine drivable by the exhaust energy of the internal combustion engine, and an air compressor coupled by a shaft to an impeller of the turbine for charging air into engine cylinders in response to rotation of the shaft. A rotor is mounted on the shaft and stator cores and coils are disposed around the rotor. The rotor and the stator cores and coils jointly constitute a motor-generator which operates as a motor or a generator dependent on operating conditions of the internal combustion engine.
    Type: Grant
    Filed: December 24, 1987
    Date of Patent: September 13, 1988
    Assignee: Isuzu Motors Limited
    Inventor: Hideo Kawamura
  • Patent number: 4756377
    Abstract: An energy recovery apparatus for a turbo compound engine is provided having: an exhaust turbine with a first rotary machine in an exhaust pipe of an internal combustion engine; a second rotary machine mounted on a wheel axle of a motor vehicle, which is driven by the internal combustion engine, and an exhaust turbine coupled to the exhaust port of the first-mentioned exhaust turbine; and a third rotary machine operable as a generator. The energy recovery apparatus also includes a first sensor for detecting the speed of rotation of the internal combustion engine and a second sensor for detecting the load on the engine. The first through third rotary machines are controlled by signals from the sensors and efficiently utilize the exhaust energy carried by the exhaust gas discharged from the internal combustion engine.
    Type: Grant
    Filed: October 23, 1987
    Date of Patent: July 12, 1988
    Assignee: Isuzu Motors Ltd.
    Inventors: Hideo Kawamura, Katsuyuki Tamai
  • Patent number: 4745754
    Abstract: A turbo compound engine includes a generator for converting the exhaust energy of an internal combustion engine to electric energy and a motor operatively coupled to the output shaft of the internal combustion engine and drivable by the electric energy generated by the generator, so that the energy of the internal combustion engine can be recovered. The torque produced by the internal combustion engine is assisted dependent on the speed of rotation of the output shaft of the engine.
    Type: Grant
    Filed: October 16, 1986
    Date of Patent: May 24, 1988
    Assignee: Isuzu Motors Limited
    Inventor: Hideo Kawamura
  • Patent number: 4719756
    Abstract: A supercharged marine diesel engine having at least one exhaust gas turbocharger and a separate power turbine is connected in parallel with the supercharger turbine. At least one auxiliary diesel engine drives a synchronous generator for supplying the shipboard grid with electrical energy. The power turbine is connected to a free shaft end of the auxiliary diesel/generator unit. By this arrangement, it is possible to reduce the load on the auxiliary diesel engine, which results in a substantial saving in fuel.
    Type: Grant
    Filed: April 11, 1986
    Date of Patent: January 19, 1988
    Assignee: BBC Brown, Boveri & Company, Limited
    Inventor: Adrian Streuli
  • Patent number: 4694653
    Abstract: An engine energy recovery apparatus is described including an exhaust turbine and a generator provided in the exhaust pipe of an engine. Temperature sensors are provided for sensing exhaust temperature at the inlet and outlet of the exhaust turbine, as well as a speed sensor for sensing the rotational speed of the exhaust turbine. The efficiency of the exhaust turbine is computed based on signals from these sensors, and the load on the generator is adjusted so that the exhaust turbine will run at maximum efficiency at all times.
    Type: Grant
    Filed: October 22, 1986
    Date of Patent: September 22, 1987
    Assignee: Isuzu Motors Limited
    Inventor: Hideo Kawamura
  • Patent number: 4665704
    Abstract: An internal combustion engine (11) including a turbocharger system comprising a supercharger compressor (16) connected to the intake manifold (12) of the engine driven by a first turbine (15) mounted on a common shaft (21) with the compressor and connected to the engine exhaust manifold (13). Surplus exhaust gas is passed to a second turbine (17) which drives an electric generator (18) for generating power to energize auxiliary equipment such as an electric motor (20). The loading and unloading of the generator is controlled by sensor and switch means (25, 19) in response to torque output demands, to thereby reduce the pressure ratio over the second turbine with consequent increase in back pressure and thus increase the pressure ratio over the first turbine with consequent boosting of the supercharging capacity of the compressor upon demand for increased torque output of the engine.
    Type: Grant
    Filed: September 10, 1985
    Date of Patent: May 19, 1987
    Assignee: Institut Cerac S.A.
    Inventor: Carl S. M. Hartwig
  • Patent number: 4535592
    Abstract: An advanced turbo compound engine of internal combustion type having conventional reciprocally movable pistons, cylinders, manifolds, fuel-oxygen admixing apparatus or fuel injection, firing apparatus or compression ignition, and incorporating the improvement of respective nozzle means for conveying the hot, moderately high pressure combustion products (exhaust gases) from the respective cylinders to one or more turbines, the nozzle means having its inlet and discharge ends connected, respectively, with the respective boundary walls of respective combustion chambers or cylinders and with the inlet to a turbine. The turbine may have its shaft connected with a compressor for compressing at least air for intake to the engine and/or for connecting with the output shaft of the engine for assisting in delivering power that is used as desired, or connected to other auxiliary power needs.
    Type: Grant
    Filed: April 12, 1983
    Date of Patent: August 20, 1985
    Assignee: Specialty Systems, Inc.
    Inventor: Herbert G. Zinsmeyer
  • Patent number: 4413593
    Abstract: Combustion control in a spark ignited internal combustion engine for inhibition of incipient detonation, or knock, is provided by the addition of exhaust gases or other diluent gases to the intake manifold of the engine prior to opening of the intake valve. The addition of this diluent gas causes a prestratification of the charge entering the combustion chamber of the engine. Upon compression and ignition of the charge, the diluent gas inhibits spontaneous combustion of the portions of the charge furthest away from the site of ignition of the charge, thereby preventing one cause of incipient detonation. This combustion control may be used with turbocharged and supercharged engines, as well as with naturally aspirated internal combustion engines, and allows the engine to operate on much lower octane fuel than would be possible without prestratification.
    Type: Grant
    Filed: December 1, 1981
    Date of Patent: November 8, 1983
    Assignee: Cornell Research Foundation, Inc.
    Inventor: Edwin L. Resler, Jr.
  • Patent number: 4311009
    Abstract: An internal combustion engine, especially Diesel engine, with cylinders arranged adjacent to each other in one cylinder block. Each of said cylinders is connected through conduits to an air intake system and an exhaust gas discharge system. The conduits of cylinders which follow each other in the working cycle of the engine are matched with each other as to length and cross section, and at least the conduits of the matched air intake system are connected to a common air container. At least the air container is combined with the motor block of the engine to form a unit, and is provided with connections for the air intake and exhaust gas outlet systems.
    Type: Grant
    Filed: October 21, 1980
    Date of Patent: January 19, 1982
    Inventors: Ludwig Elsbett, Gunter Elsbett
  • Patent number: 4294073
    Abstract: An integral turbine housing and exhaust collector section (44) is disclosed for use in an internal combustion engine turbocharger wherein the integral housing and collector section (44) is characterized by lighter weight, smaller size and greater efficiency than designs known heretofor. In the preferred embodiment, the turbine housing includes a volute section (46) containing twin 360.degree. volute passages (58, 60) into which a pair of parallel exhaust gas streams (34, 36) are directed by a pair of mirror image legs (48, 50) shaped to receive exhaust gases traveling in opposite direction toward the midsection of the engine (25) from a multi branch exhaust manifold (82, 84). Each leg (48, 50) contains a guide passage (81) having a curved central axis (1.sub.4) characterized by a constant radius of curvature (R.sub.1) at each point along the axis (1.sub.4) to provide the most aerodynamically efficient path of travel for each exhaust gas stream (34, 36).
    Type: Grant
    Filed: October 5, 1979
    Date of Patent: October 13, 1981
    Assignee: Cummins Engine Company, Inc.
    Inventor: Joseph J. Neff
  • Patent number: 4222549
    Abstract: A method and apparatus for use in breaking wood, such as wood splitting and tree felling, for causing the wood to break under the influence of a force acting on the cutting surfaces of a notch in the wood, such as a saw notch. The wood breaking force is produced by means of an inflatable cushion which is inserted in a flattened state into the saw notch and connected to the combustion chamber of the cylinder of the power saw motor to be inflated with compressed gas from the combustion chamber. Also disclosed is a special spark plug for the power saw motor for use in supplying the compressed gas from a combustion chamber to the inflatable cushion.
    Type: Grant
    Filed: July 6, 1978
    Date of Patent: September 16, 1980
    Assignee: Nordfor AB
    Inventor: Mats Lindgren
  • Patent number: H1841
    Abstract: A system and apparatus for evacuating air from an at least partially enclosed space around an internal combustion engine including an exhaust pipe for the flow of combustion products to atmosphere. The present system and apparatus includes a shaft and structure for mounting the shaft to the exhaust pipe in the exhaust path, and an impeller mountable for rotation on the shaft, the impeller including a first rotor having at least one vane or blade positioned in the exhaust path and oriented so as to be rotatably driven by the flow of combustion products, and a second rotor connected in rotatably driven communication to the first rotor, the second rotor including at least one vane or blade positioned and oriented for propelling air within the enclosure for evacuating the air therefrom.
    Type: Grant
    Filed: September 9, 1999
    Date of Patent: March 7, 2000
    Assignee: Caterpillar Inc.
    Inventor: Gerald P. Simmons