Patent ID: 6125800
Filing Date: 2000-10-03
Classification: F01P

Abstract:
Cooling system for a liquid-cooled internal-combustion engine, comprising:a pump which circulates a coolant, anda charging, venting and pressure control arrangement for controlling system pressure in a forward flow pipe, said arrangement including:a tank in which the forward flow pipe is arranged in a penetrating manner and having a valve connection piece on said forward flow pipe substantially aligned with a filler neck,a valve unit controlling opposite flow directions received in said valve connection piece,a closing device of the filler neck against which the valve unit is elastically supported displaceably in the valve connection piece,the valve connection piece being arranged to penetrate a partition of the tank with a valve opening which opens into a coolant reserve chamber for a coolant reserve which is acted upon by atmosphere,an elastically flexible device which compensates thermally caused volume changes to the coolant circulated by said pump, said elastically flexible device including an additional, geodetically deeper compensation chamber of the tank, having a boundary which can be displaced against an elastic resistance, used for coolant volume compensation,a connection piece connecting the compensation chamber with a pump suction pipe of the cooling system, anda temperature-controlled venting and return flow valve by which the compensation chamber is connected with said coolant reserve chamber.