Title:
内燃機関の制御装置
Document Type and Number:
Japanese Patent JP4858287
Kind Code:
B2
Abstract:
When knocking occurs, a control apparatus for an internal combustion engine increases the rotational speed of a pump to increase the flow rate of a coolant supplied to an area near a combustion chamber wall surface, and controls an actual mechanical compression ratio to a low mechanical compression ratio lower than a mechanical compression ratio set based on the load of the engine. Thus, the pressure of end gas is decreased, and occurrence of knocking is suppressed. Then, the actual mechanical compression ratio is returned to the mechanical compression ratio at a time point at which the temperature of the combustion chamber wall surface has been sufficiently decreased due to the increase in the rotational speed. Thus, occurrence of knocking is suppressed while avoiding the situation where the actual mechanical compression ratio continues to be controlled to the low mechanical compression ratio that is lower than the mechanical compression ratio.
Inventors:
Eiichi Kamiyama
Daisuke Akiku
Daisuke Akiku
Application Number:
JP2007112261A
Publication Date:
January 18, 2012
Filing Date:
April 20, 2007
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F02D15/04; F01P7/16; F02B23/00; F02B75/04; F02D45/00; F02F1/14; F02F7/00; F02P5/152; F02P5/153
Domestic Patent References:
| JP2007064153A | ||||
| JP2006177176A | ||||
| JP2005226571A | ||||
| JP2006328962A | ||||
| JP2003206771A | ||||
| JP2000073803A | ||||
| JP2003513191A |
Attorney, Agent or Firm:
Patent business corporation Prospec patent office