System and method for controlling a fuel supply to an internal c

Details System and method for controlling a fuel supply to an internal c System and method for controlling a fuel supply to an internal c

1988-01-29

1990-01-30

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Fuel injection system

123493, F02D 4110

Patent

active

048966444

ABSTRACT:
A system and method for controlling a fuel supplied to an internal combustion engine having a fuel supply cut-off function which operates when the engine falls in a predetermined engine deceleration condition. When a fuel supply recovery is restarted immediately after the fuel supply cut-off, a residual quantity of fuel which remains on a wall of an intake air passage is estimated on the basis of an engine load immediately before the fuel supply cut-off is carried out, a fuel recovery increment quantity for incrementing the fuel supply to the engine at a time immediately after the fuel supply recovery is carried out is set on the basis of the estimated residual quantity of fuel and an interval of time for which the fuel supply cut-off is carried out, a basic fuel quantity determined according to an engine operating condition is corrected according to the fuel recovery increment quantity, and the corrected fuel quantity is finally supplied to the engine during the fuel supply recovery. Therefore, a response to an acceleration is remarkably improved due to the fuel recovery increment quantity determined with the residual fuel quantity taken into account.

REFERENCES:
patent: 4327682 (1982-05-01), Harada
patent: 4342230 (1982-08-01), Okamura et al.
patent: 4395984 (1983-08-01), Yamaguchi et al.
patent: 4452212 (1984-06-01), Takase
patent: 4505248 (1985-03-01), Yuzawa et al.
patent: 4508087 (1985-04-01), Yasuoka et al.
patent: 4589389 (1986-05-01), Kosuge et al.

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