内燃機関の燃料噴射制御装置

Japanese Patent JP4343762

B2

The present invention provides a fuel injection control device which can prevent the occurrence of a phenomenon that when a pressure of fuel in the inside of a pressure storage chamber is elevated during a fuel cut, and the injection of fuel is restarted, the fuel is injected at a high fuel pressure largely different from a target fuel pressure. Accordingly, the fuel injection control device can prevent the deterioration of an exhaust gas and the occurrence of an engine stop. The fuel injection control device includes fuel injection valve control means which performs a driving control of the fuel injection valves, a fuel pressure sensor which detects a fuel pressure in the inside of the pressure storage chamber, a discharge amount control valve which controls a fuel amount supplied from the high-pressure pump to the pressure storage chamber, and fuel pressure control means which controls the discharge amount control valve such that the fuel pressure in the inside of the pressure storage chamber agrees with a target fuel pressure, wherein when the fuel pressure in the inside of the pressure storage chamber assumes a given pressure state during a fuel cut control, the forced fuel injection control means gives a driving instruction to the fuel injection valve control means to interrupt the fuel cut control thus enabling forced driving of the fuel injection valves of given cylinders.

Takahiko Ohno
Toshiaki Date

JP2004142786A

October 14, 2009

May 12, 2004

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Mitsubishi Electric Corporation

F02D17/02; F02P5/15; F02B17/00; F02D41/02; F02D41/12; F02D41/38; F02D43/00; F02D45/00; F02M55/02; F02M59/20; F02M59/36; F02M37/04

JP11082105A
JP2000018067A
JP2003035182A

Masuo Oiwa
Toshihide Kodama
Takenaka Ikuo
Keigo Murakami

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