Patent ID: 8220720
Filing Date: 2012-07-17
Classification: F01P,G05D

Abstract:
1. A thermostatic valve for a cooling system of an internal combustion engine, having a thermostatic work element ( 16 ) disposed in a mixing chamber ( 15 ), which work element operates as a drive element for a main valve element ( 22 , 23 ) disposed between the mixing chamber ( 14 ) and a connection from a coolant radiator and as a drive element for two short-circuit valve elements which are disposed upstream of the mixing chamber ( 15 ) and are disposed relative to a common valve seat such that upon an extension motion of the thermostatic work element ( 16 ), the initially closed first short-circuit valve element opens and the other closes upon a further extension motion, characterized in that a common short-circuit valve element ( 21 ) is provided, which has a portion acting as a short-circuit valve slide ( 26 ) and a short-circuit valve plate ( 25 ) located upstream in the extension direction, of the thermostatic work element ( 33 ), between which the common valve seat is provided; and that in the common valve seat, an overpressure valve ( 32 ) that opens toward the mixing chamber ( 15 ) is provided.