Exhaust system for multi-cylinder internal combustion

Details Exhaust system for multi-cylinder internal combustion Exhaust system for multi-cylinder internal combustion

1975-06-16

1976-09-28

Burns, Wendell E.

Power plants

Internal combustion engine with treatment or handling of...

Material from exhaust structure fed to engine intake

123119A, F02M 2506

Patent

active

039823954

ABSTRACT:
An exhaust system for multi-cylinder internal combustion engines, which is directed to the so-called proportional exhaust gas recirculation (EGR) for improving engine exhausts. The system comprises an exhaust gas recirculating circuit connected to one engine cylinder for recirculating to an intake pipe of the engine the entire amount of exhaust gas which is discharged from said one engine cylinder. Switching means is provided in said exhaust gas recirculating circuit for switching the flow of the recirculating exhaust gas in response to a value of a predetermined parameter indicating particular operating conditions of said engine. Heat exchanging means is provided in said exhaust gas recirculating circuit in contact with said intake pipe of the engine for heating said intake pipe by heat exchange with hot exhaust gas flowing through said exhaust gas recirculating circuit, and a reactor is provided in the exhaust pipe of the engine for receiving for cleaning purposes the entire amount of exhaust gases which are discharged from engine cylinders other than said one engine cylinder.

REFERENCES:
patent: 3776207 (1973-12-01), Simko
patent: 3789807 (1974-02-01), Pinkerton

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