Exhaust gas purification system

Details Exhaust gas purification system Exhaust gas purification system

1977-09-26

1979-05-01

Burns, Wendell E.

Power plants

Internal combustion engine with treatment or handling of...

Material from exhaust structure fed to engine intake

60293, 60304, 123119A, F02M 2506, F01N 310

Patent

active

041517156

ABSTRACT:
An exhaust gas purification system for use in an internal combustion engine equipped with a dual exhaust system. The exhaust gas purification system includes a secondary air supplying port of a secondary air supplying passage opened into a selected exhaust pipe belonging to one of first and second exhaust pipe groups, while an exhaust gas deriving port of an exhaust gas recycling passage for recycling the exhaust gases to a downstream of the carburetor throttle valve is provided in another exhaust pipe belonging to the other of the first and second exhaust pipe groups for effective suppression of NO.sub.x through accurate control of the amount of exhaust gases to be recycled.

REFERENCES:
patent: 3500807 (1970-03-01), Daigh
patent: 3613359 (1971-10-01), Posh et al.
patent: 3653212 (1972-04-01), Gast et al.
patent: 3751915 (1973-08-01), Ranft et al.
patent: 3776207 (1973-12-01), Simko
patent: 3938330 (1976-02-01), Nakasima et al.
patent: 4056933 (1977-11-01), Nohira et al.
patent: 4068628 (1978-01-01), Duckworth
patent: 4084372 (1978-04-01), Kuroda et al.

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