Internal combustion engine with emission control systems

Details Internal combustion engine with emission control systems Internal combustion engine with emission control systems

1977-05-23

1979-04-17

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

Material from exhaust structure fed to engine intake

60290, 60305, 123119A, F02M 2506, F01N 310

Patent

active

041493770

ABSTRACT:
Disclosed is an automotive multi-cylinder internal combustion engine in which exhaust gases from one or more of the exhaust ports of the engine cylinders are partially recirculated into the mixture induction system of the engine and secondary air is injected into exhaust gases from the remaining exhaust ports under normal operating conditions of the engine. The recirculation of the exhaust gases is interrupted and furthermore secondary air is injected into the exhaust gases from all the engine cylinders under predetermined non-normal operating conditions such as idling and decelerating conditions of the engine.

REFERENCES:
patent: 3172251 (1965-03-01), Johnson
patent: 3948044 (1976-04-01), Wakita
patent: 3978834 (1976-09-01), Arnaud
patent: 3983697 (1976-10-01), Goto
patent: 3992878 (1976-11-01), Moorman
patent: 4056933 (1977-11-01), Nohira

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