Title:
FUEL INJECTION DEVICE
Document Type and Number:
Japanese Patent JP3303630
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reduce electric power consumption by restraining temperature rise of a solenoid and to improve durability of the solenoid by branching and supplying a part of high pressure fuel supplied to an injection device from a high pressure fuel source at the time of energizing the solenoid to drive a valve member of a directional control valve.
SOLUTION: When a solenoid 76 is energized by a control device 126 in an intermediate region of an engine, for example, at the time of low speed and an intermediate and high load, a valve member 74 is made to rise to a position to make contact with a lower surface of a solenoid core 112, and a communicating passage 90 communicated through to a fuel supply passage 88 is communicated through to a pressure chamber 58 through a supply oil passage 92, etc. Thereafter, when high pressure fuel is supplied to the fuel supply passage 88, a piston 64 is pressed down, and a needle valve is energized in the closing direction. Additionally, at this time, high pressure fuel regulated in quantity through an orifice 94 flows to a branch oil passage 98, passes a low pressure chamber 108 from a valve spring chamber 96 and flows to a passage for cooling through a slit of an armature 118, and accordingly, the solenoid 76 is effectively cooled.
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Inventors:
Shinji Nakayama
Satoshi Kawatani
Kazutoshi Tokimatsu
Satoshi Kawatani
Kazutoshi Tokimatsu
Application Number:
JP27610995A
Publication Date:
July 22, 2002
Filing Date:
September 19, 1995
Export Citation:
Assignee:
MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
International Classes:
F02M47/00; F02M53/04; F02M61/10; F02M61/16; (IPC1-7): F02M53/04; F02M47/00; F02M61/10; F02M61/16
Domestic Patent References:
| JP55119955A | ||||
| JP5675960A | ||||
| JP331577A | ||||
| JP6116259A | ||||
| JP547423U | ||||
| JP547421U | ||||
| JP6387264U |
Attorney, Agent or Firm:
Yoshiaki Hirowatari