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Title:
ENGINE CONTROL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2015/146209
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide an engine control system that is capable of promoting mixing of fuel and air during exhaust gas recirculation, thereby suppressing combustion fluctuation of a gasoline engine, such that efficiency and exhaust gas purification can be simultaneously achieved. The engine control system controls an engine and is equipped with an injection device for injecting fuel directly into a cylinder and a recirculation device for recirculating exhaust gas to the intake side. When the temperature of the recirculating exhaust gas recirculated by the recirculation device is high as opposed to when the temperature is low, or when the amount of the recirculating exhaust gas recirculated by the recirculation device is large as opposed to when the amount is small, at least one of the following is executed: advancing of the fuel injection timing (IT_SP (n-2) of the injection device; increasing of the fuel pressure (FP) to be supplied to the injection device; reducing the frequency (n) of divided multi-stage injection to be performed by the injection device during the period between intake top dead center and compression top dead center; and reducing of the interval of divided multi-stage injection (IT_RE (n-2)).

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Inventors:
OGATA KENICHIROH (JP)
OKAMOTO TAKASHI (JP)
ARIHARA YOSHINOBU (JP)
Application Number:
PCT/JP2015/050196
Publication Date:
October 01, 2015
Filing Date:
January 07, 2015
Export Citation:
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Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F02D41/02; F01L13/00; F02B31/00; F02D13/02; F02D21/08; F02D41/32; F02D41/34; F02D43/00; F02M25/07; F02P3/045; F02P9/00; F02P15/10
Domestic Patent References:
WO2011117968A12011-09-29
Foreign References:
JP2006316709A2006-11-24
JP2009144535A2009-07-02
JP2003106187A2003-04-09
JP2001280123A2001-10-10
JP2013194664A2013-09-30
JP2011214536A2011-10-27
Other References:
See also references of EP 3130785A4
Attorney, Agent or Firm:
INOUE Manabu et al. (JP)
Manabu Inoue (JP)
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