Borg-warner Automotive Electronic & Mechanical Systems Corporation

Borg-warner Automotive Gmbh

Lee A Naffziger

Thomas D Herrington

A composite check valve and positively closing electromagnetic solenoid valve, particularly such a valve for regulating the introduction of secondary air into the exhaust stream of an internal combustion engine at selected times during the operation of the engine. The valve comprises an inlet port, an outlet port, a first valve element movable between open and closed positions for nominally regulating the flow of a fluid between the inlet and outlet ports, and an electromagnetic solenoid having a closure element for overriding the first element. The rigid disk or closure element can function by seating against the same seat as the first element, or by 'latching' the first element in its closed position. The disclosed embodiment is a flap valve which is modified by superimposing a rigid, movable valve disk over the flap. The rigid disk is connected to the solenoid armature and is movable between an override (closed) position and a disengaged (open) position when the solenoid is energized. The rigid disk may also limit the opening of the flap to regulate the rate of fluid flow through the valve.

Solenoid operated air control and check valve

A composite check valve and positively closing valve, particularly such a valve for regulating the introduction of secondary air into the exhaust stream of an internal combustion engine at selected times during the operation of the engine. The valve comprises an inlet port, an outlet port, a first valve element movable between open and closed positions for nominally regulating the flow of a fluid between the inlet and outlet ports, and a second valve element for overriding the first element. The second element can function by seating against the same seat as the first element, or by 'latching' the first element in its closed position. The disclosed embodiment is a flap valve which is modified by superimposing a rigid, movable valve disk over the flap. The rigid disk is movable between a disengaged position where it may have no immediate function and an override position urging the flap against its seat or otherwise closing the aperture defined by the seat. The rigid disk may also limit the opening of the flap to regulate the rate of fluid flow through the valve.

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Sterling, IL, United States of America

Lee A Naffziger