EGR Control system

Details EGR Control system EGR Control system

1978-06-07

1980-01-15

Burns, Wendell E.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

F02M 2506

Patent

active

041833333

ABSTRACT:
An EGR control system consists of a pressure regulating valve assembly which functions to prepare a control vacuum for an EGR control valve in accordance with the relationship between venturi vacuum and the pressure in a particular part of an EGR passageway connecting an exhaust gas passageway to an intake passageway. A connecting passage connecting the particular part of the EGR passageway to the pressure regulating valve assembly is provided with a flow restricting orifice therein. The connecting passage is further provided with a check valve to induct atmospheric air into the connecting passage to clean up the flow restricting orifice.

REFERENCES:
patent: 4013052 (1977-03-01), Masaki et al.
patent: 4041917 (1977-08-01), Suzuki
patent: 4056084 (1977-11-01), Baumgartner
patent: 4069797 (1978-01-01), Nohira et al.
patent: 4090482 (1978-05-01), Yoshida
patent: 4092960 (1978-06-01), Nohira et al.
patent: 4094287 (1978-06-01), Nohira
patent: 4124004 (1978-11-01), Aoyama
patent: 4128090 (1978-12-01), Aoyama
patent: 4130093 (1978-12-01), Aoyama

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