Fuel injection control device for internal combustion engine

Details Fuel injection control device for internal combustion engine Fuel injection control device for internal combustion engine

2007-09-11

2007-09-11

Huynh, Hai (Department: 3747)

Internal-combustion engines

Charge forming device

Fuel injection system

C123S436000

Reexamination Certificate

active

11506845

ABSTRACT:
A fuel injection control device for a more stable carburetion condition by setting an adequate fuel injection prohibition period at the start of an internal combustion engine. A fuel injection control device includes an injection switch which selectively switches among simultaneous injection which is performed after start of cranking in an engine until determination of a crank reference position, group injection which is performed after determination of a crank reference position until completion of stroke identification, and sequential injection which is performed after completion of stroke identification. The maximum period from simultaneous injection, after start of cranking, until simultaneously injected fuel is sucked into all cylinders #1 to #4 is set as an injection prohibition period t. The injection prohibition period t prevents “double injection,” if group injection is started just after determination of a crank reference position and “injection failure,” if the injection prohibition period is too long.

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