Patent ID: 6880495

Claim:
Method for cooling a motor vehicle engine, consisting in regulating the volume and the flow rate of a cooling fluid in a hydraulic circuit provided with a branch equipped with an electronically controlled actuator and provided with means forming radiator, the method comprising: a first step of determining the temperature (T) of the cooling fluid, a step of comparing this temperature with a specified threshold temperature (T 2 ) from which the engine is referred to as “hot”, and when the temperature (T) of the fluid is higher than the threshold temperature (T 2 ), regulating the flow rate in the radiator branch so as to maintain the temperature (T) of the cooling liquid around a specified setpoint value (Tc), wherein the curve representative of the opening (O) of the thermostatic valve as a function of the temperature (T) of the cooling fluid exhibits an hysteresis around the setpoint temperature, so as to regulate the temperature (T) of the cooling fluid at said setpoint temperature.