Title:
CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2017/170031
Kind Code:
A1
Abstract:
A control device (90) applied to an internal combustion engine (10) equipped with: a high-pressure pump (30) that is driven by the rotation of a drive shaft (12) of the internal combustion engine (10), and that discharges fuel that has been pressurized in a pressurization chamber (42); a pressure storage container (60) that stores the fuel discharged by the high-pressure pump in the pressurized state; and a relief valve (80) that, while the fuel in the pressure storage container is higher than a prescribed pressure, opens and returns the fuel in the pressure storage container to a prescribed chamber (40) in which fuel at a pressure lower than the pressure of the fuel in the pressurization chamber exists. When a state in which the pressure of the fuel in the pressure storage container is higher than a criterion pressure (which has been set lower than the prescribed pressure) continues for longer than a first period, the idle rotational speed of the internal combustion engine is increased to a prescribed rotational speed.
Inventors:
HIRATA YASUO (JP)
Application Number:
PCT/JP2017/011433
Publication Date:
October 05, 2017
Filing Date:
March 22, 2017
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F02D45/00; F02M55/02
Foreign References:
| JP2012229623A | 2012-11-22 | |||
| JP2010031816A | 2010-02-12 | |||
| JP2011132941A | 2011-07-07 | |||
| JP5525760B2 | 2014-06-18 |
Attorney, Agent or Firm:
YAMADA, Tsuyoshi (JP)
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