Patents by Inventor Patrick Piet

Patrick Piet 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).

  • Fuel injection system for a diesel engine with recycling
    Patent number: 6868838
    Abstract: The invention relates to a fuel injection system for a diesel engine cooled by a cooling water circuit comprising a storage tank, a distribution system, an injection harness and a draining circuit. The distribution system comprises a pump and a device for the selective heating of the fresh fuel flow before admission into the pump, and the injection harness injects part of the fuel into the engine. The draining circuit comprises a device for cooling the flow of non-injected fuel, and is used for the selective return of the flow toward the storage tank. The selective heating device comprises a recycle line and a direction setting element which can be used selectively to recycle the flow of non-injected fuel upstream of the pump.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: March 22, 2005
    Assignee: Peugeot Citroen Automobiles S.A.
    Inventor: Patrick Piet
  • Fuel injection system for a diesel engine with recycling
    Publication number: 20050022794
    Abstract: The invention relates to a fuel injection system for a diesel engine cooled by a cooling water circuit comprising a storage tank, a distribution system, an injection harness and a draining circuit. The distribution system comprises a pump and a device for the selective heating of the fresh fuel flow before admission into the pump, and the injection harness injects part of the fuel into the engine. The draining circuit comprises a device for cooling the flow of non-injected fuel, and is used for the selective return of the flow toward the storage tank. The selective heating device comprises a recycle line and a direction setting element which can be used selectively to recycle the flow of non-injected fuel upstream of the pump.
    Type: Application
    Filed: October 22, 2002
    Publication date: February 3, 2005
    Inventor: Patrick Piet