F - Mech Eng,Light,Heat,Weapons – 01 – N
Patent
F - Mech Eng,Light,Heat,Weapons
01
N
172/11, 137/82
F01N 3/10 (2006.01) F01N 3/22 (2006.01) F02B 75/10 (2006.01)
Patent
CA 1067413
INTEGRAL AIR SWITCHING DIVERTER VALVE -- Abstract of the Disclosure -- In a system for delivering secondary air from an air pump to either the exhaust manifold, preferably, closely adjacent to the exhaust ports, or to a converter in the exhaust system of an internal combustion engine, an integral air switching diverter valve assembly having an inlet connected to the air pump, a primary discharge outlet for delivery of air to the exhaust manifold and a secondary discharge outlet for delivery of air to the converter, a valve being mounted in the assembly for movement between a first or converter mode position at which it is normally positioned to allow secondary air flow to the converter while blocking secondary air flow to the exhaust manifold and a second or port mode position to allow secondary air flow to the exhaust manifold while blocking air flow to the converter, the assembly including a differen- tial pressure operated switching diaphragm assembly used to effect movement of the valve between the port and coverter modes, a divert timing assembly operative during deceleration to effect switching to the converter mode, and a pressure relief outlet which is operative during the port or converter switching modes to discharge, at a selected pressure, excess secondary air to the atmosphere.
284172
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