Air-fuel ratio control for an exhaust gas recirculation engine

Details Air-fuel ratio control for an exhaust gas recirculation engine Air-fuel ratio control for an exhaust gas recirculation engine

1984-04-10

1985-11-19

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Fuel injection system

123571, F02M 5100, F02M 2506

Patent

active

045535183

ABSTRACT:
An air-fuel ratio control system applicable to engines having exhaust gas recirculation (EGR). A basic amount of fuel to be injected is determined on the basis of an intake air pressure or a throttle opening. When the operating condition of an engine meets a predetermined condition for an exhaust gas recirculation control mode, a correction coefficient for the exhaust gas recirculation control mode is read from map data stored in memory means to correct the basic amount therewith. Immediately after the correction coefficient has been changed, the basic amount is corrected with a correction coefficient related to the values of the correction coefficient immediately before and after it is changed.

REFERENCES:
patent: 4130095 (1978-12-01), Bowler et al.
patent: 4235204 (1980-11-01), Rice
patent: 4454853 (1984-06-01), Hasegawa

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