Exhaust gas recirculation control system having variable valve l

Details Exhaust gas recirculation control system having variable valve l Exhaust gas recirculation control system having variable valve l

1982-11-01

1984-05-15

Burns, Wendell E.

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

F02M 2506

Patent

active

044481772

ABSTRACT:
An exhaust gas recirculation control system which is adapted to control the valve opening of the exhaust gas recirculation valve so as to minimize the difference between a detected value of the valve opening of the above value and a command value determined as a function of operating conditions of the engine. The valve opening is corrected at a higher speed when the above difference has a larger absolute value, and at a lower speed when the difference has a smaller absolute value, to ensure prompt and accurate control of the exhaust gas recirculation quantity.

REFERENCES:
patent: 4304210 (1981-12-01), Hayakawa
patent: 4314540 (1982-02-01), Ikeura
patent: 4318385 (1982-03-01), Yamaguchi
patent: 4369753 (1983-01-01), Sugiyama
patent: 4378776 (1983-04-01), Nishimori
patent: 4378777 (1983-04-01), Iida et al.

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