Oil cooler is a device that accelerates the heat dissipation of the lubricating oil and keeps it at a lower temperature. On high-performance, high-power enhanced 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 the radiator.
Water-cooled oil cooler
The 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, and when the engine starts, it absorbs heat from the cooling water to rapidly increase the temperature of the lubricating oil. The oil cooler is composed of an aluminum alloy cast casing, front cover, rear cover and copper core tube. In order to enhance cooling, heat sinks are installed outside the tubes. The cooling water flows outside the tube, the lubricating oil flows inside the tube, and the two conduct heat exchange. There are also structures that allow oil to flow outside the tube, while water flows inside the tube.
Air-cooled oil cooler
The core of the air-cooled oil cooler is composed of many cooling pipes and cooling plates. When the car is running, the car's oncoming wind is used to cool the hot oil cooler core. The air-cooled oil cooler requires good ventilation around it, and it is difficult to ensure enough ventilation space on ordinary cars, and it is rarely used. Most of the coolers are used in racing cars because of the high speed of the racing car and the large cooling air volume.