| 摘要 |
PROBLEM TO BE SOLVED: To provide an electronic control type blow-by gas reduction device for an internal combustion engine, capable of precisely restraining the occurrence of excessive difference between actual fuel quantity supplied to a combustion chamber and demand quantity, caused by change of fuel pressure. SOLUTION: The blow-by gas reduction device 60 is provided for ventilation of the inside of a crank chamber 32, in an engine 10 which conducts fuel pressure control to reduce the actual value of fuel pressure toward a target value after change and is provided with a PCV valve 63 for regulating flow of blow-by gas, supplied from the crank chamber 32 to a surge tank 47. When the actual value of flue pressure has a response delay with respect to the target value due to the change in the actual value by fuel pressure control, and when the demand value of injection quantity of an injector 52 is smaller than the minimum value of the injection quantity at a timing due to the response delay, flow of blow-by gas is reduced through the operation of the PCV valve 63. COPYRIGHT: (C)2009,JPO&INPIT
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