Fuel injection control device of in-cylinder type internal combu

Details Fuel injection control device of in-cylinder type internal combu Fuel injection control device of in-cylinder type internal combu

1998-04-30

1999-12-21

Argenbright, Tony M.

Internal-combustion engines

Combustion chamber means having fuel injection only

Having a particular relationship between injection and...

123675, F02B 500, F02D 4112

Patent

active

060034890

ABSTRACT:
In an in-cylinder injection internal combustion engine which is placed in a selected one of a compression stroke injection mode in which fuel injection is conducted during a compression stroke, and a suction stroke injection mode in which fuel injection is conducted during a suction stroke, depending upon operating conditions of the engine, a fuel control device cut a fuel to be supplied to a combustion chamber of the engine when a certain fuel cut condition set depending upon the operating conditions of the engine is established, and resumes fuel injection in a compression stroke injection mode when a predetermined fuel cut return condition is established. In this fuel control device, when the fully closed state of a throttle valve is detected by an idle switch, or the engine speed is reduced by a large degree, the fuel injection is resumed in an intake stroke injection mode upon return from the fuel cut, so as to prevent undershoot of the engine speed.

REFERENCES:
patent: 5009210 (1991-04-01), Nakagawa et al.
patent: 5427082 (1995-06-01), Thomas et al.
patent: 5722363 (1998-03-01), Iida et al.
patent: 5738074 (1998-04-01), Makamura et al.

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