What is an Oil Cooler?

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

Types of Oil Coolers

The core of the air-cooled oil cooler consists of many cooling pipes and cooling plates. When the car is running, the hot oil cooler core is cooled by the oncoming wind of the car. The air-cooled oil cooler requires good ventilation around it. It is difficult to ensure sufficient ventilation space in ordinary cars, and it is rarely used. Most of the engine oil cooler are used in racing cars because the racing speed is high and the cooling air volume is large.

The oil cooler is placed in the cooling water circuit, and the temperature of the cooling water is used to control the temperature of the lubricating oil. When the temperature of the lubricating oil is high, it is cooled by the cooling water, and when the engine is started, the heat is absorbed from the cooling water to rapidly increase the temperature of the lubricating oil. The aluminium oil cooler consists of an aluminium alloy cast casing, front cover, rear cover and copper core tube. In order to enhance cooling, heat sinks are installed on the outside of the tube. The cooling water flows outside the tube, the lubricating oil flows inside the tube, and the two exchange heat. There are also structures that allow oil to flow outside the tube and water to flow inside the tube.

Classification of Oil Coolers

1. Engine oil cooler: It cools the lubricating oil of the engine, keeps the temperature of the oil at a reasonable temperature (90-120 degrees), and the viscosity is reasonable; the installation position is in the cylinder block of the engine, and it is installed in one piece with the casing.

2. Transmission oil cooler: It cools the lubricating oil of the transmission and is installed in the lower water chamber of the engine radiator or the outside of the gearbox case. If it is air-cooled, it is installed on the front side of the radiator.

3. Retarder oil cooler: It cools the lubricating oil when the retarder is working. The installation position is outside the gearbox. Most of them are shell-and-tube or water-oil composite products.

4. Exhaust gas recirculation cooler: It is a device used to cool part of the exhaust gas returned to the engine cylinder, and the purpose is to reduce the content of nitrogen oxides in the automobile exhaust.

5. Cooling cooler module: It is a device that can simultaneously cool various objects or some objects such as cooling water, lubricating oil, compressed air, etc. The cooling module adopts a highly integrated design idea, with full functions, small size and intelligence. high-efficiency features.

6. The air cooler, also known as the intercooler, is a device used to cool the high temperature and high-pressure air after the engine is supercharged. Through the cooling of the intercooler, the temperature of the supercharged air can be reduced, thereby increasing the density of the air, so as to achieve the purpose of engine power, fuel consumption and emission reduction.