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Title:
ACCUMULATOR TYPE FUEL INJECTOR
Document Type and Number:
WIPO Patent Application WO/2001/075297
Kind Code:
A1
Abstract:
An accumulator type fuel injector, wherein a controller (8) opens a switching valve (5) for switching a fuel injection rate which controls a high-pressure fuel supply from a high-pressure accumulator (3) to a fuel path (10a) on the downstream side of a check valve (32) for a short time between an auxiliary injection and a main injection so as to form a fuel pressure higher than an auxiliary injection pressure and lower than a main injection pressure in the fuel path on the downstream side of the switching valve, whereby, when a stop valve (7) for injection timing control is opened to start the main injection, an injection pressure at the initial stage of the main injection becomes an appropriate pressure which is higher than the auxiliary injection pressure and lower than the main injection pressure provided after the auxiliary injection, and thus a fuel efficiency and exhaust gas characteristics are improved.

Inventors:
TANABE KEIKI (JP)
KOHKETSU SUSUMU (JP)
KOTOOKA SEIJIRO (JP)
Application Number:
PCT/JP2000/002108
Publication Date:
October 11, 2001
Filing Date:
March 31, 2000
Export Citation:
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Assignee:
MITSUBISHI MOTORS CORP (JP)
TANABE KEIKI (JP)
KOHKETSU SUSUMU (JP)
KOTOOKA SEIJIRO (JP)
International Classes:
F02D41/38; F02D41/40; F02M45/02; F02M45/08; F02M47/02; (IPC1-7): F02M45/08; F02M47/00; F02D41/04; F02D41/38
Foreign References:
DE19809001A11998-09-24
DE19704663A11997-08-21
JPH0693936A1994-04-05
JPH05195903A1993-08-06
JPH07139448A1995-05-30
JPH1037790A1998-02-10
Attorney, Agent or Firm:
Nagato, Kanji (Shinbashi 5-chome Minato-ku, Tokyo, JP)
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