Rotary valve piston for regulating the temperature and quantity of recycled exhaust gases in combustion engines comprises a valve housing and a regulating element having a conical casing surface

摘要

Rotary valve piston (1) comprises a valve housing (2) and a regulating element (3) having a conical casing surface. An independent claim is also included for an exhaust gas recycling system containing the above rotary valve piston. Preferred Features: The regulating element has an upper side and a lower side with the casing surface arranged between them. The upper and lower surfaces have curved surfaces. The rotary valve piston has a valve seat with a conical casing surface having the same opening angle as the conical casing surface of the regulating element.