Exhaust gas recirculation system

Details Exhaust gas recirculation system Exhaust gas recirculation system

1978-02-24

1980-06-10

Burns, Wendell E.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

F02M 2506

Patent

active

042067294

ABSTRACT:
An exhaust gas recirculation system for use in an internal combustion engine includes an intake manifold having a riser portion serving as a heating source for an intake mixture charge, an exhaust gas recirculation passage running from an exhaust manifold to an intake system for introducing part of exhaust gases from the former to the latter, and a temperature-responsive valve provided in the intake manifold in such a position as to be able to detect the temperature of the riser portion for controlling the flow rate of the recirculation exhaust gases, in accordance with the temperature of the riser position. In this exhaust gas recirculation system, the flow rate of exhaust gases to be recirculated from the exhaust manifold to the intake system may be increased by one step, or two steps, as required, in response to the temperature of the riser portion, by means of a modified temperature responsive valve attached to the intake system.

REFERENCES:
patent: 4090482 (1978-05-01), Yoshida
patent: 4142496 (1979-03-01), Saito et al.

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