Exhaust gas recirculation control for internal combustion engine

Details Exhaust gas recirculation control for internal combustion engine Exhaust gas recirculation control for internal combustion engine

1982-06-21

1984-01-31

Burns, Wendell E.

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

123569, 123479, F02M 2506

Patent

active

044283555

ABSTRACT:
An internal combustion engine having an exhaust gas recirculation system provided with a recirculation control valve. An abnormality detecting circuit is provided to detect that the control valve is held open beyond a desired position position for more than a certain time due for example to a stick in the valve actuating mechanism so as to increase a charge of intake mixture in an idling operation or shutt-off the exhaust gas recirculation.

REFERENCES:
patent: 3779222 (1973-12-01), Lorenz
patent: 3875913 (1975-04-01), Price
patent: 3915134 (1975-10-01), Young et al.
patent: 3991846 (1976-11-01), Chichester et al.
patent: 4233947 (1980-11-01), Abo

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