Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1994-11-02
1996-08-06
Argenbright, Tony M.
Internal-combustion engines
Charge forming device
Fuel injection system
123492, 123493, F02D 4100
Patent
active
055423930
ABSTRACT:
A fuel injection amount control system for an internal combustion engine includes an ECU which calculates a desired amount of fuel to be supplied to each combustion chamber in response to operating conditions of the engine, and calculates values of parameters indicative of fuel adherence characteristics of the interior of the intake passage in response to operating conditions of the engine. The ECU further calculates a first fuel amount which is directly drawn into the combustion chamber from a fuel amount injected by the fuel injection valve, and a second amount of fuel which is carried off the wall surface of the intake passage due to evaporation and drawn into the combustion chamber, based upon the values of the parameters. The ECU calculates an injection amount of fuel to be injected, by correcting the desired fuel amount, based upon the first and second fuel amounts. When the engine is in a predetermined operating condition in which convergence of the fuel injection amount calculated by the ECU to the desired fuel amount can be unstable, the value of at least one of the parameters such that the fuel injection amount stably converges to the desired fuel amount.
REFERENCES:
patent: 4357923 (1982-11-01), Hideg
patent: 5031597 (1991-07-01), Monden
patent: 5080071 (1992-01-01), Minamitani et al.
Fujimoto Sachito
Hirota Toshiaki
Katoh Akira
Kitagawa Hiroshi
Takahashi Jun
Argenbright Tony M.
Honda Giken Kogyo Kabushiki Kaisha
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