Control apparatus for direct injection type internal combustion engine
AssigneeHitachi, Ltd.
InventorsMasahiro Toyohara, Takashi Okamoto, Michihiko Hasegawa
Life of this patent
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Abstract
An apparatus controls the quantity of fuel injection of an injector in accordance with the fuel pressure in the fuel rail of a direct injection type internal combustion engine. A reference value for controlling the injector is obtained on the basis of the difference and the fuel pressure in the fuel rail at the time of starting fuel injection out of injector.
Claims5
A control apparatus for an internal combustion engine having a high-pressure fuel pump discharging fuel into a fuel pipe, detection means for detecting fuel pressure in said fuel pipe and a fuel injector injecting fuel of said fuel pipe into a cylinder of said engine, wherein
- said control apparatus controls a quantity of fuel injected by said fuel injector based on a difference between a quantity of injected fuel from said fuel injector and a quantity of fuel discharged from said high-pressure pump in a time period of fuel injection of said fuel injector.
A control apparatus for an internal combustion engine having a high-pressure fuel pump discharging fuel into a fuel pipe, detection means for detecting fuel pressure in said fuel pipe and a fuel injector injecting fuel of said fuel pipe into a cylinder of said engine, wherein
- said control apparatus calculates a quantity of fuel injected by said fuel injector based on a fuel pressure obtained by said detection means, and controls an actual quantity of fuel injected by said fuel injector and a quantity of fuel discharged from said high-pressure pump in a time period of fuel injection of said fuel injector.
Dependencies are inferred from the claim text.