EGR Control system for internal combustion engines

Details EGR Control system for internal combustion engines EGR Control system for internal combustion engines

1977-09-19

1979-04-24

Burns, Wendell E.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

F02M 2506

Patent

active

041506464

ABSTRACT:
An engine equipped with an electronically controlled fuel injection system is provided with an EGR control system which accurately regulates the EGR rate in accordance with a vacuum signal produced at a venturi formed in the intake passageway of the engine, under low and medium load engine operating conditions. However, under high speed and high load engine operating conditions, a part of intake air is bypassed through a bypass passage connecting the upstream and downstream sides of the venturi in order to prevent increase of the flow resistance of the intake air.

REFERENCES:
patent: 3973535 (1976-08-01), Sugihara et al.
patent: 3978834 (1976-09-01), Arnaud et al.
patent: 3996906 (1976-12-01), Bubniar et al.
patent: 4005689 (1977-02-01), Barnard
patent: 4027638 (1977-06-01), Moriya et al.
patent: 4033308 (1977-07-01), Hayashi et al.
patent: 4040401 (1977-08-01), Marsee
patent: 4057043 (1977-11-01), Harada
patent: 4061265 (1977-12-01), Kitamura
patent: 4080941 (1978-03-01), Bertrand

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