Car engine cooling system

Pouring coolant into the engine through the radiator. Circulation pump. Channel in the front crankcase cover. Cylinder cooling jacket. The passage of fluid through special holes in the cylinder head gasket. Filling the cylinder head. Coolant outlet for heating the intake manifold. The pipe connects the pump and the thermostat housing. The main outlet of the liquid from the head into the thermostat housing. Thermostat locking element. Upper radiator pipe. It carries fluid from the thermostat to the radiator. Radiator cap. Consists of two valves. Inlet valve and exhaust valve. The circulation pump pumps coolant into the cylinder block jacket. When the fluid temperature is below 80 degrees Celsius, the thermostat shut-off element blocks the path to the radiator. The liquid from the head, through the thermostat body, returns to the circulation pump. Repeating the path. Heat from the cylinders is transferred to the coolant. When the liquid heats above 80 degrees Celsius, the thermostat shut-off element opens. In this case, the channels from the intake manifold and the channel to the pump are blocked. The coolant is directed to the radiator. The impeller cools the fluid in the radiator. During critical overheating, when the liquid expands significantly and creates pressure. The release valve is activated. Excess pressure, along with the liquid, is discharged into the expansion tank. When the engine cools down. And the liquid decreases in volume. A vacuum is created in the cooling system. At the same time, atmospheric pressure presses on the liquid in the expansion tank. When the vacuum reaches a certain value. The inlet valve opens. The previously squeezed out liquid is returned to the system. Thanks for watching, see you next video. 😉