Forced air control valve for exhaust system of internal...

Details Forced air control valve for exhaust system of internal... Forced air control valve for exhaust system of internal...

F - Mech Eng,Light,Heat,Weapons

01

N

172/13, 172/41

F01N 3/22 (2006.01)

Patent

CA 1121273

FORCED AIR CONTROL VALVE FOR EXHAUST SYSTEM OF AN INTERNAL COMBUSTION ENGINE Leo T. Klimazewski James A. McNairy Abstract of the Disclosure A forced air control valve for an air injection system in an internal combustion engine is shifted during cold engine operation to divert air flow to the exhaust manifold upstream of a catalytic converter bed to supply air to the exhaust gases for further combustion prior to entry in the catalytic converter. A diaphragm operated main valve is responsive to a vacuum from the intake manifold for diverting air to the exhaust manifold and a temperature activated vacuum switch shuts off the vacuum when the engine warms up. Upon deceleration during cold engine operation the control valve is shifted to divert air away from the ex- haust manifold.

318427

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