Multi-purpose valve
AssigneeDaimlerChrysler AG
InventorManfred Trapp
Life of this patent
Estimating the term…
Abstract
In an electrical multi-purpose valve for supplying secondary air into an exhaust system of an internal combustion engine, in which a power-actuated closing member controls a valve orifice in a passage between an inlet from an air supply line and an outlet to the exhaust system, a non-return valve is arranged downstream of the closing body in the direction of the flow of the air through the valve between the non-return valve and the valve outlet, and baffle devices are provided which deflect exhaust gas entering the valve from the outlet at least once by an angle of about 90°.
Claims6
A multi-purpose valve (10) for supplying secondary air to an exhaust system of an internal combustion engine, said valve including a valve orifice (14) disposed between an air connection (12) and an outlet (19) to the exhaust system, a power-actuated closing member (15) controlling the valve orifice (14) and a non-return valve (20) arranged downstream of the closing member (15) in the direction of flow of the air, and baffling devices (24, 26, 27) arranged between the non-return valve (20) and the outlet (19) so as to deflect an exhaust gas flow from the outlet (19) into the valve at least once through at least 90°, said baffling devices (24, 26, 27) including a baffle plate (24) which is arranged transversely to a valve orifice (23) and which separates a pre-chamber (35) facing the non-return valve (20) from a deflection chamber (26) connected to the outlet (19), a passage orifice (30) being arranged, radially offset in relation to the valve orifice (23) of the non-return valve (20), in the baffle plate (24).
Dependencies are inferred from the claim text.