A typical 4 cylinder vehicle cruising along the highway at around 50 miles per hour, will produce 4000 controlled explosions per minute inside the engine as the spark plugs ignite the fuel in each cylinder to propel the vehicle down the road. | Mô tả quá trình hệ thống làm mát english A Short Course on Cooling Systems What is a Cooling System A typical 4 cylinder vehicle cruising along the highway at around 50 miles per hour will produce 4000 controlled explosions per minute inside the engine as the spark plugs ignite the fuel in each cylinder to propel the vehicle down the road. Obviously these explosions produce an enormous amount of heat and if not controlled will destroy an engine in a matter of minutes. Controlling these high temperatures is the job of the cooling system. The modern cooling system has not changed much from the cooling systems in the model T back in the 20s. Oh sure it has become infinitely more reliable and efficient at doing it s job but the basic cooling system still consists of liquid coolant being circulated through the engine then out to the radiator to be cooled by the air stream coming through the front grill of the vehicle. Today s cooling system must maintain the engine at a constant temperature whether the outside air temperature is 110 degrees Fahrenheit or 10 below zero. If the engine temperature is too low fuel economy will suffer and emissions will rise. If the temperature is allowed to get too hot for too long the engine will self destruct. How Does a Cooling System Work Actually there are two types of cooling systems found on motor vehicles Liquid cooled and Air cooled. Air cooled engines are found on a few older cars like the original Volkswagen Beetle the Chevrolet Corvair and a few others. Many modern motorcycles still use air cooling but for the most part automobiles and trucks use liquid cooled systems and that is what this article will concentrate on. The cooling system is made up of the passages inside the engine block and heads a water pump to circulate the coolant a thermostat to control the temperature of the coolant a radiator to cool the coolant a radiator cap to control the pressure in the system and some plumbing consisting of interconnecting hoses to .
