Patents by Inventor Dennis D. Feucht

Dennis D. Feucht has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6742503
    Abstract: A fluid system for supplying low and high pressure fluid is provided. A first pump discharges a first pump flow. A filter receives a first portion of the first pump flow and discharges a filter flow. A first accumulator receives a first portion of the filter flow. A valve receives a second portion of the first pump flow and a second portion of the filter flow, and discharges a valve flow. The valve is movable between a first position, providing a first flow path between the second portion of the first pump flow and the valve flow, and a second position, providing a second flow path between the second portion of the filter flow and the valve flow. A second pump receives the valve flow and discharges a second pump flow. A second accumulator receives the second pump flow.
    Type: Grant
    Filed: September 18, 2002
    Date of Patent: June 1, 2004
    Assignee: Caterpillar Inc.
    Inventor: Dennis D. Feucht
  • Publication number: 20040050369
    Abstract: A fluid system for supplying low and high pressure fluid is provided. A first pump discharges a first pump flow. A filter receives a first portion of the first pump flow and discharges a filter flow. A first accumulator receives a first portion of the filter flow. A valve receives a second portion of the first pump flow and a second portion of the filter flow, and discharges a valve flow. The valve is movable between a first position, providing a first flow path between the second portion of the first pump flow and the valve flow, and a second position, providing a second flow path between the second portion of the filter flow and the valve flow. A second pump receives the valve flow and discharges a second pump flow. A second accumulator receives the second pump flow.
    Type: Application
    Filed: September 18, 2002
    Publication date: March 18, 2004
    Applicant: Caterpillar Inc.
    Inventor: Dennis D. Feucht
  • Patent number: 6659092
    Abstract: A bypass venturi assembly for recirculating exhaust gas in an internal combustion engine, and particularly suitable for use in a vehicle, is provided with a housing having an outlet, a combustion air inlet and an exhaust gas inlet. A center piece is positioned within the housing and in communication with the combustion air inlet. The center piece defines a combustion air bypass section therein. An annular venturi nozzle positioned between the housing and the center piece is in communication with the combustion air inlet and defines a combustion air venturi section. The venturi nozzle is in communication with the exhaust gas inlet and defines an exhaust gas venturi section. A combustion air bypass valve is positioned in association with the combustion air bypass section. An exhaust gas valve is positioned in association with the exhaust gas inlet. The venturi nozzle is separate from the housing and allows a nozzle with a particular configuration to be utilized, depending upon the application.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: December 9, 2003
    Assignee: Caterpillar Inc
    Inventors: Gerald N. Coleman, Dennis D. Feucht, Michael P. Harmon, David A. Pierpont, Matthew D. Rampenthal
  • Patent number: 6640542
    Abstract: An internal combustion engine, particularly suitable for use in a work machine, is provided with a combustion air supply and an exhaust manifold. A bypass venturi assembly includes a housing having an outlet, a combustion air inlet and an exhaust gas inlet. A center piece is positioned within the housing and is in communication with the combustion air inlet. The center piece defines a combustion air bypass section therein. A combustion air bypass valve is positioned in association with the combustion air bypass section. An exhaust gas valve is positioned in association with the exhaust gas inlet. A single shaft is coupled with and carries each of the combustion air bypass valve and the exhaust gas valve.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: November 4, 2003
    Assignee: Caterpillar Inc
    Inventors: Gerald N. Coleman, Dennis D. Feucht, Michael P. Harmon, David A. Pierpont, Matthew D. Rampenthal
  • Patent number: 6609373
    Abstract: An internal combustion engine, particularly suitable for use in a work machine, is provided with an exhaust manifold, a turbocharger, and a bypass venturi assembly. The turbocharger includes a turbine and a compressor, with the turbine having a variable geometry inlet coupled with the exhaust manifold, and the compressor having an outlet. The bypass venturi assembly includes a housing having an outlet, a combustion air inlet and an exhaust gas inlet. The combustion air inlet is coupled with the compressor outlet. The exhaust gas inlet is coupled with the exhaust manifold. A center piece is positioned within the housing and is in communication with the combustion air inlet. The center piece defines a combustion air bypass section therein. A combustion air bypass valve is positioned in association with the combustion air bypass section. The exhaust gas valve is positioned in association with the exhaust gas inlet.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: August 26, 2003
    Assignee: Caterpillar Inc
    Inventors: Gerald N. Coleman, David A. Pierpont, Dennis D. Feucht, Matthew D. Rampenthal, Michael P. Harmon
  • Patent number: 6609374
    Abstract: An internal combustion engine, particularly suitable for use in a motor vehicle, is provided with a combustion air supply, an exhaust manifold, and a bypass venturi assembly. The bypass venturi assembly includes a housing having an outlet, a combustion air inlet connected and in communication with the combustion air supply, and an exhaust gas inlet connected and in communication with the exhaust manifold. A venturi nozzle is positioned in communication with the combustion air inlet. The venturi nozzle defines a bypass venturi section therein. The venturi nozzle and the housing define an exhaust gas venturi section therebetween terminating at an induction area. The venturi nozzle has a plurality of through holes in communication with a downstream portion of the exhaust gas venturi section. The exhaust gas inlet terminates at the induction area. A bypass valve is positioned to open and close the bypass venturi section.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: August 26, 2003
    Assignee: Caterpillar Inc
    Inventors: Dennis D. Feucht, Paul F. Olsen
  • Publication number: 20030115874
    Abstract: An internal combustion engine, particularly suitable for use in a work machine, is provided with a combustion air supply and an exhaust manifold. A bypass venturi assembly includes a housing having an outlet, a combustion air inlet and an exhaust gas inlet. A center piece is positioned within the housing and is in communication with the combustion air inlet. The center piece defines a combustion air bypass section therein. A combustion air bypass valve is positioned in association with the combustion air bypass section. An exhaust gas valve is positioned in association with the exhaust gas inlet. A single shaft is coupled with and carries each of the combustion air bypass valve and the exhaust gas valve.
    Type: Application
    Filed: December 20, 2001
    Publication date: June 26, 2003
    Inventors: Gerald N. Coleman, Dennis D. Feucht, Michael P. Harmon, David A. Pierpont, Matthew D. Rampenthal
  • Publication number: 20030116145
    Abstract: A bypass venturi assembly for recirculating exhaust gas in an internal combustion engine, and particularly suitable for use in a vehicle, is provided with a housing having an outlet, a combustion air inlet and an exhaust gas inlet. A center piece is positioned within the housing and in communication with the combustion air inlet. The center piece defines a combustion air bypass section therein. An annular venturi nozzle positioned between the housing and the center piece is in communication with the combustion air inlet and defines a combustion air venturi section. The venturi nozzle is in communication with the exhaust gas inlet and defines an exhaust gas venturi section. A combustion air bypass valve is positioned in association with the combustion air bypass section. An exhaust gas valve is positioned in association with the exhaust gas inlet. The venturi nozzle is separate from the housing and allows a nozzle with a particular configuration to be utilized, depending upon the application.
    Type: Application
    Filed: December 20, 2001
    Publication date: June 26, 2003
    Inventors: Gerald N. Coleman, Dennis D. Feucht, Michael P. Harmon, David A. Pierpont, Matthew D. Rampenthal
  • Publication number: 20030115871
    Abstract: An internal combustion engine, particularly suitable for use in a motor vehicle, is provided with a combustion air supply, an exhaust manifold, and a bypass venturi assembly. The bypass venturi assembly includes a housing having an outlet, a combustion air inlet connected and in communication with the combustion air supply, and an exhaust gas inlet connected and in communication with the exhaust manifold. A venturi nozzle is positioned in communication with the combustion air inlet. The venturi nozzle defines a bypass venturi section therein. The venturi nozzle and the housing define an exhaust gas venturi section therebetween terminating at an induction area. The venturi nozzle has a plurality of through holes in communication with a downstream portion of the exhaust gas venturi section. The exhaust gas inlet terminates at the induction area. A bypass valve is positioned to open and close the bypass venturi section.
    Type: Application
    Filed: December 20, 2001
    Publication date: June 26, 2003
    Inventors: Dennis D. Feucht, Paul F. Olsen
  • Publication number: 20030110768
    Abstract: An internal combustion engine, particularly suitable for use in a work machine, is provided with an exhaust manifold, a turbocharger, and a bypass venturi assembly. The turbocharger includes a turbine and a compressor, with the turbine having a variable geometry inlet coupled with the exhaust manifold, and the compressor having an outlet. The bypass venturi assembly includes a housing having an outlet, a combustion air inlet and an exhaust gas inlet. The combustion air inlet is coupled with the compressor outlet. The exhaust gas inlet is coupled with the exhaust manifold. A center piece is positioned within the housing and is in communication with the combustion air inlet. The center piece defines a combustion air bypass section therein. A combustion air bypass valve is positioned in association with the combustion air bypass section. The exhaust gas valve is positioned in association with the exhaust gas inlet.
    Type: Application
    Filed: December 19, 2001
    Publication date: June 19, 2003
    Inventors: Gerald N. Coleman, David A. Pierpont, Dennis D. Feucht, Matthew D. Rampenthal, Michael P. Harmon
  • Patent number: 6484499
    Abstract: An internal combustion engine, particularly suitable for a vehicle, is provided with a plurality of combustion cylinders, at least a first exhaust manifold and a second exhaust manifold and at least one intake manifold. Each exhaust manifold is coupled with a plurality of the combustion cylinders. Each intake manifold is coupled with a plurality of the combustion cylinders. A first turbocharger includes a first turbine having at least one inlet and an outlet, and a first compressor having an inlet and an outlet. Then at least one first turbine inlet has a controllable, variable intake nozzle fluidly coupled with the first exhaust manifold. A second turbocharger includes a second turbine having an inlet and an outlet, and a second compressor having an inlet and an outlet. The second turbine inlet has a controllable, variable intake nozzle fluidly coupled with the second exhaust manifold. The first compressor outlet is fluidly coupled with the second compressor inlet.
    Type: Grant
    Filed: January 5, 2001
    Date of Patent: November 26, 2002
    Assignee: Caterpillar, Inc
    Inventors: Gerald N. Coleman, James J. Faletti, Dennis D. Feucht, David A. Pierpont
  • Patent number: 6484500
    Abstract: An internal combustion engine comprises a first exhaust manifold, a second exhaust manifold, a first turbocharger having a first turbine and a first compressor, and a second turbocharger having a second turbine and a second compressor. A second gas inlet port of the second turbine is connected in fluid communication with a second exhaust manifold to receive at least a portion of second combustion gases. A second gas outlet port of the second turbine and the first exhaust manifold are in fluid communication with a first gas inlet port of the first turbine. A valve is connected in fluid communication with the second exhaust manifold to receive a remainder of exhaust gases not included in the at least a portion of the second combustion gases supplied to the second turbine. The valve is connected in fluid communication with a mixer to deliver at least a portion of the remainder of exhaust gases to the mixer for mixing with compressed air in the mixer.
    Type: Grant
    Filed: August 27, 2001
    Date of Patent: November 26, 2002
    Assignee: Caterpillar, Inc
    Inventors: Gerald N. Coleman, Dennis D. Feucht, James J. Faletti, David A. Pierpont
  • Patent number: 6439212
    Abstract: A bypass venturi assembly for recirculating exhaust gas in an internal combustion engine, Particularly suitable for use in an on-road vehicle, is provided with a housing having an outlet, a combustion air inlet and an exhaust gas inlet. A center piece is Positioned within the housing and is in communication with the combustion air inlet. The center piece defines a combustion air bypass section therein. A combustion air bypass valve is positioned in association with the combustion air bypass section. An exhaust gas valve is positioned in association with the exhaust gas inlet. An elbow is coupled with the outlet and defines a fluid flow path. The elbow includes a vane therein which is positioned in association with the flow path.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: August 27, 2002
    Assignee: Caterpillar Inc.
    Inventors: Gerald N. Coleman, Dennis D. Feucht, Michael P. Harmon, David A. Pierpont, Matthew D. Rampenthal
  • Patent number: 6422217
    Abstract: An internal combustion engine exhaust gas recirculation (EGR) system includes an exhaust gas manifold back pressure valve insert assembly which has an exhaust gas recirculation (EGR) conduit interposed between exhaust manifold structure of the engine and atmospheric exhaust structure, and a valve mechanism disposed within the exhaust gas recirculation (EGR) conduit and movable between a fully closed position at which all exhaust gases from the engine pass to atmospheric exhaust through the atmospheric exhaust structure, and a fully opened position at which the valve mechanism partially occludes the atmospheric exhaust structure such that a sufficiently large back pressure is developed with respect to the atmospheric exhaust structure such that exhaust gases are forced through the exhaust gas recirculation (EGR) conduit.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: July 23, 2002
    Assignee: Caterpillar Inc.
    Inventors: Dennis D. Feucht, Eric C. Fluga, Keith E. Lawrence, Carol A. Rathman
  • Patent number: 6418721
    Abstract: An internal combustion engine, particularly suitable for a motor vehicle, is provided with a plurality of combustion cylinders, at least a first exhaust manifold and a second exhaust manifold and at least one intake manifold. Each exhaust manifold is coupled with a plurality of the combustion cylinders. Each intake manifold is coupled with a plurality of the combustion cylinders. A first turbocharger includes a first turbine having at least one inlet and an outlet, and a first compressor having an inlet and an outlet. The at least one first turbine inlet is fluidly coupled with the first exhaust manifold and includes a controllable, variable intake nozzle. A second turbocharger includes a second turbine having an inlet and an outlet, and a second compressor having an inlet and an outlet. The second turbine inlet is fluidly coupled with the second exhaust manifold. The first compressor outlet is fluidly coupled with the second compressor inlet.
    Type: Grant
    Filed: January 5, 2001
    Date of Patent: July 16, 2002
    Assignee: Caterpillar Inc.
    Inventors: Gerald N. Coleman, James J. Faletti, Dennis D. Feucht, David A. Pierpont
  • Publication number: 20020088230
    Abstract: An internal combustion engine, particularly suitable for a motor vehicle, is provided with a plurality of combustion cylinders, at least a first exhaust manifold and a second exhaust manifold and at least one intake manifold. Each exhaust manifold is coupled with a plurality of the combustion cylinders. Each intake manifold is coupled with a plurality of the combustion cylinders. A first turbocharger includes a first turbine having at least one inlet and an outlet, and a first compressor having an inlet and an outlet. The at least one first turbine inlet is fluidly coupled with the first exhaust manifold and includes a controllable, variable intake nozzle. A second turbocharger includes a second turbine having an inlet and an outlet, and a second compressor having an inlet and an outlet. The second turbine inlet is fluidly coupled with the second exhaust manifold. The first compressor outlet is fluidly coupled with the second compressor inlet.
    Type: Application
    Filed: January 5, 2001
    Publication date: July 11, 2002
    Inventors: Gerald N. Coleman, James J. Faletti, Dennis D. Feucht, David A. Pierpont
  • Publication number: 20020088231
    Abstract: An internal combustion engine, particularly suitable for a vehicle, is provided with a plurality of combustion cylinders, at least a first exhaust manifold and a second exhaust manifold and at least one intake manifold. Each exhaust manifold is coupled with a plurality of the combustion cylinders. Each intake manifold is coupled with a plurality of the combustion cylinders. A first turbocharger includes a first turbine having at least one inlet and an outlet, and a first compressor having an inlet and an outlet. Then at least one first turbine inlet has a controllable, variable intake nozzle fluidly coupled with the first exhaust manifold. A second turbocharger includes a second turbine having an inlet and an outlet, and a second compressor having an inlet and an outlet. The second turbine inlet has a controllable, variable intake nozzle fluidly coupled with the second exhaust manifold. The first compressor outlet is fluidly coupled with the second compressor inlet.
    Type: Application
    Filed: January 5, 2001
    Publication date: July 11, 2002
    Inventors: Gerald N. Coleman, James J. Faletti, Dennis D. Feucht, David A. Pierpont
  • Patent number: 6412279
    Abstract: An internal combustion engine, particularly suitable for a motor vehicle, is provided with a plurality of combustion cylinders, at least a first exhaust manifold and a second exhaust manifold and at least one intake manifold. Each exhaust manifold is coupled with a plurality of the combustion cylinders. Each intake manifold is coupled with a plurality of the combustion cylinders. A first turbocharger includes a first turbine having at least one inlet and an outlet, and a first compressor having an inlet and an outlet. The at least one first turbine inlet is fluidly coupled with the first exhaust manifold. A second turbocharger includes a second turbine having an inlet and an outlet, and a second compressor having an inlet and an outlet. The second turbine inlet is fluidly coupled with the second exhaust manifold and includes a controllable, variable intake nozzle. The first compressor outlet is fluidly coupled with the second compressor inlet.
    Type: Grant
    Filed: December 20, 2000
    Date of Patent: July 2, 2002
    Assignee: Caterpillar Inc.
    Inventors: Gerald N. Coleman, James J. Faletti, Dennis D. Feucht, David A. Pierpont
  • Publication number: 20020073960
    Abstract: An integral engine fueling and engine compression braking hydraulically actuated, electronically controlled unit injector (HEUI) system comprises a fuel injection piston. A brake rocker arm extends transversely through the fuel injector and axially accommodates the fuel injector plunger and plunger return spring. The brake rocker arm is also operatively connected to the engine exhaust valve rocker arm, and a camming shaft, having a flat or planar surface portion, is operatively connected to an end portion of the brake rocker arm. When the end portion of the brake rocker arm is disposed in contact with the flat or planar surface portion of the camming shaft, normal fuel injection can occur in accordance with an electronic control module (ECM).
    Type: Application
    Filed: December 18, 2000
    Publication date: June 20, 2002
    Inventor: Dennis D. Feucht
  • Publication number: 20020073981
    Abstract: An internal combustion engine, particularly suitable for a motor vehicle, is provided with a plurality of combustion cylinders, at least a first exhaust manifold and a second exhaust manifold and at least one intake manifold. Each exhaust manifold is coupled with a plurality of the combustion cylinders. Each intake manifold is coupled with a plurality of the combustion cylinders. A first turbocharger includes a first turbine having at least one inlet and an outlet, and a first compressor having an inlet and an outlet. The at least one first turbine inlet is fluidly coupled with the first exhaust manifold. A second turbocharger includes a second turbine having an inlet and an outlet, and a second compressor having an inlet and an outlet. The second turbine inlet is fluidly coupled with the second exhaust manifold and includes a controllable, variable intake nozzle. The first compressor outlet is fluidly coupled with the second compressor inlet.
    Type: Application
    Filed: December 20, 2000
    Publication date: June 20, 2002
    Inventors: Gerald N. Coleman, James J. Faletti, Dennis D. Feucht, David A. Pierpont