Exhaust gas recirculation valve for internal combustion engine

摘要

An exhaust gas recirculation valve has at least one valve head connected to a valve stem that works together with a valve seat. It controls the connection of the exhaust channel to the induction pipe of an internal combustion engine. A computer processes a set of operating parameters according to the operating state of the engine. It sets the opening position of the exhaust recirculation valve using a drive working against the force of a spring. Valve seats (4) and/or valve heads can be heated electrically. PTC heating elements are located as heating elements (10) in the valve seat region. A metal heating element is inserted into the valve housing to form a valve seat surface.