Exhaust gas recirculation control system for internal combustion

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

1982-11-12

1984-05-08

Burns, Wendell E.

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

123569, 36443106, F02M 2506

Patent

active

044468407

ABSTRACT:
An E.G.R. control system for a diesel engine is disclosed wherein a deterioration in combustion is avoided upon depressing an accelerator pedal for reacceleration after the momentary release of the accelerator pedal. An E.G.R. control unit is responsive to a load indicative signal from a load sensor and a revolution signal from a revolution sensor and generates an engine operating state indicative signal indicating that the engine operates in low load state which requires high E.G.R. flow rate. A monostable circuit, a delay circuit and a logic circuit make up a circuit means for preventing a throttle valve from being closed until the engine keeps operating in the low load state for a time longer than a predetermined time.

REFERENCES:
patent: 4181944 (1980-01-01), Yamauchi et al.
patent: 4318385 (1982-03-01), Yamaguchi
patent: 4333438 (1982-06-01), Perez et al.
patent: 4387693 (1983-06-01), Romblom
patent: 4387694 (1983-06-01), Yoshiba et al.
patent: 4388909 (1983-06-01), Ogasawara et al.
patent: 4388912 (1983-06-01), Kimura et al.
Nissan Motor Company, Ltd., "1981 Datsun 810 Diesel Service Manual," 1981, pp. EC-2 to EC-8.

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