External-combustion Engine Type Patents (Class 60/39.6)
  • Patent number: 6318067
    Abstract: An internal combustion engine for driving a power shaft, the engine comprising a cylindrical rotor rotatably mounted between opposing faceplates and adapted to rotate about a rotor axis. The rotor comprises a plurality of fixed volume fuel ignition compartments, each fuel ignition compartment defined circumferentially by a cylindrical sidewall of the rotor and by a central hub, and defined radially by radial vanes of the rotor. Each radial vane is connected to the sidewall at one end and to the central hub at an opposite end. The fuel ignition compartments are closed axially by the opposite faceplates. At least one of the faceplates comprises a gas exhaust port. A power cylinder, comprising a reciprocating piston therein and an exhaust valve, is in direct gas communication with the gas exhaust port. For a two-cylinder engine, each fuel ignition compartment further comprises a pair of symmetrical axial blocking plates extending between the radial vanes parallel to and in contact with the faceplates.
    Type: Grant
    Filed: January 14, 2000
    Date of Patent: November 20, 2001
    Inventor: Michael M. Marquard
  • Publication number: 20010039795
    Abstract: The internal combustion engine comprises at least one combustion chamber (1, 1′) for burning a fuel in timed explosions accompanied by formation of a combustion gas, at least one expansion chamber (3) which is connected with the combustion chamber and separate from the combustion chamber and which has a piston (4) for converting energy of the combustion gas into mechanical energy or work, and a cam gear unit by which a drive shaft (32) can be driven by the piston and which has a cam disk (31) and associated thrust member (30), wherein the thrust member (30) can be lifted from the cam disk (31) for carrying out irregular engine cycles independent from a continuous rotation of the cam disk (31), including a pausing of the piston (4) of the expansion chamber (3) at its top dead center.
    Type: Application
    Filed: April 23, 2001
    Publication date: November 15, 2001
    Inventor: Edmund F. Nagel
  • Publication number: 20010032452
    Abstract: A method for controlling the fuel-air ratio of a burner having a blower responsive to a blower drive signal for injecting air into the burner. The method is based at least on the concentration of a gas in an exhaust gas product of a combustion chamber of the burner and includes measuring the gas concentration in the exhaust gas product, deriving a gas concentration signal from the measured gas concentration, determining the fuel-air ratio from the gas concentration signal and the sign of the derivative of the gas concentration signal with respect to the blower drive signal, and controlling the fuel-air ratio by adjusting the air flow rate into the burner. The burner may be, for example, in a Stirling cycle engine.
    Type: Application
    Filed: May 11, 2001
    Publication date: October 25, 2001
    Applicant: New Power Concepts LLC
    Inventors: Dean L. Kamen, Christopher C. Langenfeld, Michael Norris, William W. Ormerod, Andrew Schnellinger
  • Publication number: 20010032451
    Abstract: A waste-to-energy incineration system, in which the amount and the heat value of exhaust gas largely changes in a long and a short periods, comprises an incinerator for burning waste, a boiler in the incinerator for generating steam with exhaust heat generated by the incinerator, a superheater for superheating steam generated in the boiler, a steam turbine driven by steam superheated by the superheater, a generator driven by the steam turbine, a fuel reformer for reforming source fuel, and a combustor burning fuel gas reformed by the fuel reformer and at least a part of exhaust gas led from the incinerator which are able to stably decompose generated dioxin, whereby it becomes possible to stably and almost completely decompose dioxin in waste incineration exhaust gas.
    Type: Application
    Filed: February 13, 2001
    Publication date: October 25, 2001
    Applicant: Hitachi, Ltd.
    Inventors: Tsutomu Okusawa, Kazuhito Koyama, Masahiko Yamagishi, Shigeo Hatamiya, Taiko Ajiro, Megumi Sunou, Yukio Ishigaki, Kenji Tokunaga
  • Patent number: 6305159
    Abstract: In an internal combustion engine with one or more combustion chambers for burning fuel in timed explosions while forming a combustion gas under pressure, the combustion chambers are connected with at least one work chamber which is separate from the combustion chambers and which has a piston for converting energy of the combustion gas formed in an explosion cycle into mechanical energy or work. At least one injection nozzle which opens into the work chamber is provided for spraying in a cooling liquid to initiate an implosion cycle following the explosion cycle, and one or more precompression pumps which are driven by the movement of the piston during the implosion cycle are provided for compressing air to be introduced into the combustion chambers.
    Type: Grant
    Filed: October 12, 2000
    Date of Patent: October 23, 2001
    Inventor: Edmund Ferdinand Nagel
  • Patent number: 6305171
    Abstract: The invention concerns a method for additional thermal heating for motor vehicle equipped with pollution-free engine operating with additional compressed air injection into the combustion chamber (2) and having high pressure compressed air storage reservoir (23). The high pressure compressed air contained in the reservoir is previously to its final use at a lower pressure, directed towards a thermal heater (56) to increase its pressure and/or volume before it is injected into the combustion or expension chamber (2). The invention is applicable to all engines equipped with compressed air injection.
    Type: Grant
    Filed: July 20, 2000
    Date of Patent: October 23, 2001
    Inventors: Guy Negre, Cyril Negre
  • Publication number: 20010025478
    Abstract: The external combustion hot air power system comprises a compressor, a recuperator, a heated mult-process expander, a surrounding combustion chamber and necessary fuel system, controls, fluid flow passages, mechanical connections and structure. The multiprocess expander provides for isobaric and isothermal expansions. Air is compressed and then heated by combustion products in a recuperator heat exchanger. This hot compressed air is further heated and expanded at approximately constant pressure in the isobaric expander to generate power. Additional power is generated downstream by isothermal expansion. Hot expanded air flows from the expander into the surrounding combustion chamber to support combustion. Isobaric expansion must be heated by the hottest portion of the combustion chamber to increase the temperature of the expanding gas. Combustion products flow from the combustion chamber and through the hot side of the (recuperator) heat exchanger to regeneratively heat previously compressed air.
    Type: Application
    Filed: March 13, 2001
    Publication date: October 4, 2001
    Inventor: Solomon S. Fineblum
  • Publication number: 20010015060
    Abstract: An externally fired gas turbine system according to the present invention has a compressor for compressing ambient air and producing compressed air, an air heat exchanger for heating the compressed air to produce heated compressed air, a turbine for expanding the heated compressed air to produce heat depleted expanded air, and a generator connected to the turbine for generating electricity. According to the present invention, the system also includes combustible products producing apparatus for processing fuel to produce combustible products that include combustible gases and an external combustion chamber for burning the combustible products and transferring heat to the air heat exchanger and producing heat depleted combustion products. The system also includes a closed Rankine cycle steam power plant having a water heat exchanger for vaporizing water and producing steam using heat contained in the heat depleted combustion products.
    Type: Application
    Filed: January 2, 2001
    Publication date: August 23, 2001
    Applicant: ORMAT INDUSTRIES LTD.
    Inventors: Lucien Y. Bronicki, Daniel Goldman, Joseph Sinai
  • Patent number: 6247316
    Abstract: A low or no pollution engine is provided for delivering power for vehicles or other power applications. The engine has an air inlet which collects air from a surrounding environment. At least a portion of the nitrogen in the air is removed using a technique such as liquefaction, pressure swing adsorption or membrane based air separation. The remaining air is primarily oxygen, which is then compressed and routed to a gas generator. The gas generator has an igniter and inputs for the high pressure oxygen and a high pressure hydrogen containing fuel, such as hydrogen or methane. The fuel and oxygen are combusted within the gas generator, forming water and carbon dioxide with carbon containing fuels. Water is also delivered into the gas generator to control a temperature of the combustion products. The combustion products are then expanded through a power generating device, such as a turbine or piston expander to deliver output power for operation of a vehicle or other power uses.
    Type: Grant
    Filed: March 22, 2000
    Date of Patent: June 19, 2001
    Assignee: Clean Energy Systems, Inc.
    Inventor: Fermin Viteri
  • Patent number: 6216444
    Abstract: This invention pertains to a combustion engine having a combustion chamber (1, 201), which has an ignition device, for the combustion of a fuel with formation of a combustion gas during an explosion stroke, and also having a rigid wall that is displaceable by the expanding combustion gas. The movement of the rigid wall can be transmitted to a drive shaft (9, 267). The combustion chamber (1, 201) has a constant volume, and a pumping chamber (12, 212) separate from the combustion chamber (1, 201) and connected to the combustion chamber (1, 201) is provided for the conversion of the energy of the combustion gas into mechanical energy, which pumping chamber has the displaceable rigid wall. The pumping chamber (12, 212) is preferably formed by a cylinder in which a piston (11, 211) is displaceably housed, which piston forms the displaceable rigid wall.
    Type: Grant
    Filed: May 13, 1999
    Date of Patent: April 17, 2001
    Inventor: Edmund Ferdinand Nagel
  • Patent number: 6205788
    Abstract: This invention is an external combustion engine that operates on an open or closed hot air cycle with isothermal compression of ambient temperature fluid; heat is added at constant volume; and the fluid is expanded to near ambient pressure. The engine has a compressor, heater, multiple heat exchanging chambers, and an expander. The heat, originating in a heater, is moved by fluid flow through a plurality of heat exchanging chambers in sequence, one heat exchanging chamber at a time. The heating circuit can be operated open or closed cycle. The more heat exchanging chambers, the more time for the heat exchanger in the heat exchanging chamber to heat up.
    Type: Grant
    Filed: June 12, 2000
    Date of Patent: March 27, 2001
    Inventor: Edward Lawrence Warren
  • Patent number: 6199369
    Abstract: An external combustion engine burns a mixture of fuel and air to produce work. The engine contains at least one power cylinder, a compression cylinder for each power cylinder, and a moving combustion housing with a plurality of combustion chambers for each power cylinder. Each combustion chamber has a constant volume and cyclically: (1) establishes communication with a compression cylinder to receive compressed air; (2) terminates communication with the compression cylinder; (3) receives sufficient fuel from the fuel injector to create a combustible mixture of fuel and air; (4) contains the ignition of the combustible mixture of fuel and air; (5) establishes communication with a power cylinder to discharge the ignited mixture of fuel and air into the power cylinder; and (6) terminates communication with the power cylinder.
    Type: Grant
    Filed: March 13, 1998
    Date of Patent: March 13, 2001
    Inventor: Daniel J. Meyer