System for combined EGR and idle speed control

Details System for combined EGR and idle speed control System for combined EGR and idle speed control

1984-06-25

1986-07-22

Wolfe, Jr., Willis R.

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

123587, F02M 2506

Patent

active

046012770

ABSTRACT:
A system including a throttle body communicating intake air to the intake manifold of an engine, the throttle body including a movable throttle plate. A vacuum responsive idle speed bypass valve is used to bypass intake air around the throttle plate and into the intake manifold, a vacuum responsive EGR valve is used for regulating the amount of exhaust gas permitted to be recirculated into the intake manifold, a single electric vacuum regulating (EVR) communicated to a vacuum inport port, the idle speed bypass valve and EGR valve to be employed to vary the degree of manifold vacuum communicated thereto.

REFERENCES:
patent: 4116178 (1978-09-01), Saito
patent: 4117814 (1978-10-01), Takahashi
patent: 4122812 (1978-10-01), Takano
patent: 4168681 (1979-09-01), Kawai et al.
patent: 4313415 (1982-02-01), Shinzawa
patent: 4321900 (1982-03-01), Takeda

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