Title:
FUEL INJECTION CONTROL SYSTEM OF INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2012/056534
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a technique which is capable of reducing feed pressure as much as possible without triggering an accidental fire or a disordered air-fuel ratio in a fuel injection control system of an internal combustion engine provided with a low pressure fuel pump and a high pressure fuel pump. In this fuel injection control system of the internal combustion engine wherein fuel discharged from the low pressure fuel pump is boosted in pressure by the high pressure fuel pump and supplied to a fuel injection valve, when reduction processing for reducing feed pressure which is discharge pressure of the low pressure fuel pump is in process, the reduction processing is switched between stop and restart according to changing trend of an integral term used in proportional-integral control of driving duty of the high pressure fuel pump.
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Inventors:
KOJIMA SUSUMU (JP)
Application Number:
PCT/JP2010/069101
Publication Date:
May 03, 2012
Filing Date:
October 27, 2010
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD (JP)
KOJIMA SUSUMU (JP)
KOJIMA SUSUMU (JP)
International Classes:
F02M37/08; F02M37/00; F02M69/00
Foreign References:
| JP2010071224A | 2010-04-02 | |||
| JP2010185308A | 2010-08-26 | |||
| JP2005307931A | 2005-11-04 | |||
| JP2008175080A | 2008-07-31 |
Other References:
See also references of EP 2634411A4
Attorney, Agent or Firm:
KAWAGUCHI, Yoshiyuki et al. (JP)
Yoshiyuki Kawaguchi (JP)
Yoshiyuki Kawaguchi (JP)
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Claims:
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