Patents by Inventor Timothy Prochnau

Timothy Prochnau 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).

  • Supercharged boost-assist engine brake
    Patent number: 8281587
    Abstract: A control system for engine braking for a vehicle powered by a turbocharged engine uses a supercharger to assist a turbocharger compressor to boost turbocharger air flow into the engine cylinders. An engine driven air pumping device draws ambient air, or alternately exhaust gas through the pump inlet, compresses the air, and delivers the compressed air through the pump outlet to the turbocharger compressor inlet or alternately the turbocharger compressor outlet. The increased air flow into the cylinders and out of the cylinder exhaust valves increases retarding power of the vehicle.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: October 9, 2012
    Assignee: International Engine Intellectual Property Company, LLC
    Inventors: Qianfan Xin, Martin R. Zielke, Michael D. Bartkowicz, Luis Carlos Cattani, Steve Gravante, Timothy Prochnau, Antoun Y. Calash, John L. Cagney
  • SUPERCHARGED BOOST-ASSIST ENGINE BRAKE
    Publication number: 20110036088
    Abstract: A control system for engine braking for a vehicle powered by a turbocharged engine uses a supercharger to assist a turbocharger compressor to boost turbocharger air flow into the engine cylinders. An engine driven air pumping device draws ambient air, or alternately exhaust gas through the pump inlet, compresses the air, and delivers the compressed air through the pump outlet to the turbocharger compressor inlet or alternately the turbocharger compressor outlet. The increased air flow into the cylinders and out of the cylinder exhaust valves increases retarding power of the vehicle.
    Type: Application
    Filed: August 13, 2009
    Publication date: February 17, 2011
    Applicant: International Engine Intellectual Property Company, LLC
    Inventors: Qianfan Xin, Martin R. Zielke, Michael D. Bartkowicz, Luis Carlos Cattani, Steve Gravante, Timothy Prochnau, Antoun Y. Calash, John L. Cagney
  • Clean, low-pressure EGR in a turbocharged engine by back-pressure control
    Publication number: 20050045407
    Abstract: A turbocharged engine system (20) has an intake system (26) through which charge air enters combustion chambers and an exhaust system (28), including a CDPF (34), through which products of combustion pass to the surrounding atmosphere. A throttle valve (36) disposed in the exhaust system downstream of both the CDPF and the turbocharger turbine (30) controls engine back-pressure. An EGR flow path for recirculating exhaust gas from the exhaust system to the intake system includes an EGR valve (48) for controlling EGR flow. The EGR flow path has a pierce point to the exhaust system upstream of the throttle valve and downstream of both the CDPF and the turbine and a pierce point to the intake system upstream of the turbocharger compressor. Valves (36, 48) are under coordinated control provided by an engine control system (24) via for selectively restricting the respective valves to attain desired EGR flow.
    Type: Application
    Filed: August 28, 2003
    Publication date: March 3, 2005
    Inventors: Tytus Bulicz, Mahmoud El-Beshbeeshy, Kai Chen, Timothy Prochnau