In automobile engine cylinder block, there are multiple for cooling water circulation channel, and placed in the front of the car radiator (commonly known as water tank) through the water pipes connected to form a large water cycle system, outlet on the engine, equipped with a water pump, driven by fan belt, within the engine cylinder block water heat pump, the pump into the cold. Beside the water pump and a thermostat, cold (car), when the car has just started not to open, make the cooling water without water tank, only within the engine cycle (commonly known as small cycle), momentum motivation above the temperature of 95 degrees, is opened, the hot water is pumped into the tank engine inside, when the car on the cold wind blowing water tank, heat can be taken away