The invention providing a cooling
system capable of improving the engine warming-up speed and lowering the
oil consumption. The cooling
system comprises an engine water pump, an engine cylinder body,a cylinder
body water jacket, a cylinder cover
water jacket, a
thermostat,
HVAC, a radiator, an engine oil cooler, a
water storage pot and an
electromagnetic valve. The cooling
system can be controlled to start and stop through the choices of the
electromagnetic valve and the
thermostat, the flow directions of cooling water can be switched according to the load of an engine, the rapid engine warming-up process can be achieved, and the
oil consumption can be lowered; in the engine cold-start stage, the cylinder cover
water jacket and the cylinder
body water jacket can be kept in a series connection structure, the cooling water can be heated twice during one cycle, the temperature rise of the cooling water can be accelerated to the greatest extent, the heat exchange process can be performedthrough the engine oil cooler, the rapid temperature rise of engine
oil can be achieved, the friction work of the engine can be reduced, and the
oil consumption and emissions can be lowered; and in the relatively-high-temperature engine warming-up stage and the high-temperature stage, the cylinder cover
water jacket and the cylinder
body water jacket can be kept in a series connection structure, the
water flow rate of the engine can be increased to the greatest extent, the
water flow rate of a cylinder body and that of a cylinder cover can be controlled respectively, both the optimum temperature of the cylinder body and that of the cylinder cover can be reached, the knocking phenomenon can be reduced, and the oil consumption can be lowered.