Patent ID: 10359138

Abstract:
This disclosure pertains to a control device for the coolant flow in a cooling circuit of an internal combustion engine with the following characteristics: a housing with an inlet opening, an outlet opening and a movable control element for varying the flow-through cross section of the channel; an annular seal arrangement comprising a sealing frame and a sealing ring is seated between a sealing surface of the housing and a sealing surface of the control element. According to this disclosure, it is proposed that the sealing ring rests against a plane sealing surface of the housing in a sealing fashion and meets this plane sealing surface along a contact line that encloses a first surface area. Depending on the flow direction through the seal arrangement, the sealing ring features a surface section that has a defined circumference referred to the length of the contact line between the sealing ring and the housing. The sealing surface of the sealing frame is perpendicularly projected into a plane of projection and thereby has an inner and/or outer boundary line, which respectively encloses a second or third surface area that has a certain relation to the first surface area.