Internal combustion engine with emission control systems

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

F - Mech Eng,Light,Heat,Weapons

02

M

123/98.02

F02M 25/06 (2006.01) F01N 3/22 (2006.01) F02M 25/07 (2006.01)

Patent

CA 1074640

ABSTRACT OF THE DISCLOSURE 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 being interrupted and furthermore second- ary 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.

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