Patents Assigned to Hitachi Engineering Car Co., Ltd.
  • High pressure fuel supply pump for internal combustion engine
    Publication number: 20040055580
    Abstract: An intake valve automatically opened and closed by pressure of a pressuring chamber is provided in a fuel intake passage, the intake valve is pushed to open by a plunger of an electromagnetic plunger mechanism, pulling-in operating timing of the plunger is controlled according to the operating condition of an internal combustion engine, and opening time of the intake valve during compression stroke of a pump is controlled to make discharge flow-rate of high pressure fuel variable.
    Type: Application
    Filed: August 20, 2003
    Publication date: March 25, 2004
    Applicants: Hitachi, Ltd., Hitachi Engineering Car Co., Ltd.
    Inventors: Hiroyuki Yamada, Shigenori Tahara, Atsuji Saito, Yukio Takahashi, Masami Abe