Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1995-06-02
1996-04-16
Argenbright, Tony M.
Internal-combustion engines
Charge forming device
Fuel injection system
123478, F02D 4106
Patent
active
055072658
ABSTRACT:
In a method and apparatus which compensates a fuel injection amount by a first fuel enrichment coefficient dependent on an engine coolant temperature during engine warm-up period after engine starting, the fuel injection amount is compensated further by a second fuel enrichment coefficient from a time an engine revolution speed falls until a time a predetermined interval lapses. The second fuel enrichment coefficient may be changed by a throttle valve opening condition and/or an engine intake air pressure. The fuel injection amount may be further compensated further by a third fuel enrichment coefficient until a time another predetermined interval shorter than the predetermined interval lapses, when a fall of the engine revolution speed is large.
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Asama Hidehiko
Ichikawa Yasuhisa
Argenbright Tony M.
Nippondenso Co. Ltd.
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