Actuator control apparatus for internal combustion engine

Details Actuator control apparatus for internal combustion engine Actuator control apparatus for internal combustion engine

1999-03-16

2000-12-05

Kamen, Noah P.

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

12356822, F02B 4708

Patent

active

061552402

ABSTRACT:
A lower limit EIEOF of a current for controlling the EGR valve employed to prevent the EGR valve from generating chattering is set in accordance with an engine revolution speed NE which indirectly indicates an amount of exhaust pressure acting on the EGR valve as the current value of the lower limit EIEOF is influenced by the exhaust pressure as a back pressure of the EGR valve. Therefore, it is possible to set a current value eiefin for EGR control in a range which has not been conventionally covered. The EGR control can be applied to a wider driving region, thus achieving an improved driving state of a diesel engine.

REFERENCES:
patent: 4462377 (1984-07-01), Tanaka et al.
patent: 4466416 (1984-08-01), Kawamura
patent: 4562821 (1986-01-01), Ikeda
patent: 4625702 (1986-12-01), Onishi

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