What's the Air Oil Cooler?

Hydraulic Oil Cooler

The function of the oil cooler is to cool the lubricating oil and keep the oil temperature within the normal working range. In the high-power enhanced engine, due to the large heat load, an oil cooler must be installed. When the engine is running, the viscosity of the oil becomes thinner with the increase in temperature, which reduces the lubricating ability. Therefore, some engines are equipped with an oil cooler, whose function is to reduce the temperature of the oil and maintain a certain viscosity of the lubricating oil. The oil cooler is arranged in the circulating oil circuit of the lubrication system.


When the oil cooler is broken,the engine oil will continue to be hot, and the system will also issue an alarm that the oil temperature is too high. In this case, using the vehicle will cause the oil to be unable to effectively lubricate the inside of the engine The internal wear of the engine is increased, which greatly reduces the performance of the engine and shortens the service life of the engine. In severe cases, the engine may be damaged.


The oil cooler is a device that accelerates the heat dissipation of the lubricating oil to keep it at a lower temperature. On a high-performance, high-power enhanced engine, an oil cooler must be installed due to the large heat load. The oil cooler is arranged in the lubricating oil circuit, and its working principle is the same as that of the radiator.


What happens if the oil cooler is broken?

Air-cooled oil cooler:

The core of the air-cooled oil cooler is composed of many cooling tubes and cooling plates. When the car is running, the oncoming wind of the car is used to cool the hot oil cooler core. The air-cooled oil cooler requires good surrounding ventilation. It is difficult to ensure sufficient ventilation space on ordinary cars, and it is generally rarely used. This type of cooler is mostly used in racing cars because of the high speed of the racing car and the large cooling air volume.


Water-cooled oil cooler:

The water-cooled oil cooler is placed in the cooling water circuit and uses the temperature of the cooling water to control the temperature of the lubricating oil. When the temperature of the lubricating oil is high, it is cooled by the cooling water. When the engine starts, it absorbs heat from the cooling water to make the lubricating oil quickly increase its temperature. The oil cooler is composed of a shell made of aluminum alloy, a front cover, a rear cover and a copper core tube. In order to enhance cooling, heat sinks are fitted outside the tube. Cooling water flows outside the pipe, and lubricating oil flows inside the pipe, and the two exchange heat. There is also a structure in which oil flows outside the pipe and water flows inside the pipe.