Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1991-05-28
1994-01-11
Argenbright, Tony M.
Internal-combustion engines
Charge forming device
Fuel injection system
F02D 4110
Patent
active
052771644
ABSTRACT:
A method and an apparatus for control of engine fuel injection are characterized by detecting the state of the acceleration of the engine and also judging whether or not the engine is in a specific acceleration state, by, when the engine is judged to be in a specific state of acceleration, using such a value as a crank shaft angle obtained in advance in order to predict the air mass flow rate of the air flowing into a specific cylinder having undergone a fuel injection, by using the predicted air mass flow rate or the crank shaft angle to determine a proper asynchronous fuel injection quantity for the above-mentioned acceleration state for the specific cylinder, and then by performing an asynchronous injection. In this way, it is possible to calculate the shortage of fuel occurring with the synchronous injection even at the early stage of acceleration by using various variables so as to determine a proper supplemental fuel supply quantity (asynchronous injection quantity) for achieving a desired air fuel ratio in various drive modes.
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Asano Seiji
Sekozawa Teruji
Shioya Makoto
Takahashi Shinsuke
Argenbright Tony M.
Hitachi , Ltd.
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