Exhaust air flow proportioning valve

Details Exhaust air flow proportioning valve Exhaust air flow proportioning valve

F - Mech Eng,Light,Heat,Weapons

01

N

137/42

F01N 3/22 (2006.01) F01N 13/02 (2010.01)

Patent

CA 1152856

C-3237 EXHAUST AIR FLOW PROPORTIONING VALVE Abstract of the disclosure A valve controlling the rate of air flow from a supply pump to an engine exhaust system directs the air flow to the exhaust system through an orifice in a diaphragm valve which is associated with a valve seat separating the air supply from an excess air discharge port. The pressures acting on the diaphragm displace the diaphragm from the valve seat the amount necessary for the rate of air flow through the orifice to the exhaust system to be proportional to the rate of exhaust flow through the exhaust system and for the excess airflow supplied by the pump to be dis- charged through the excess air port.

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