Anordnung eines Abgasrückführungsventils an einem geformten Einlasskrümmer

摘要

The installation has the valve is mounted directly in the intake manifold, and a tubular base piece receiving exhaust gas mounted in an opening in the manifold by a double-walled thin metal heat gradient element. An attached solenoid housing is mounted in an opening in an opposite manifold wall. An operating rod having an attached valve element is actuated by a pushing force generated by energisation of the solenoid. The valve is cooled by air flow within the air induction duct to prevent heat damage to the manifold and the solenoid components are isolated from direct exposure to exhaust gas. The installation has an intake manifold with air induction ducting and tubular base piece through opening in wall of air induction ducting. A pipe receiving exhaust gas from engine. A solenoid assembly is mounted in an opening opposite air induction ducting. Valve seat in chamber within tubular base piece has opening extending into air induction duct, and can establish fluid communication between exhaust gas tube and chamber. The solenoid coil when energised moves valve proportionately to control volume of flow of exhaust gas from pipe into air induction ducting.