The oil radiator, also known as the oil cooler, is an oil cooling device used in diesel engines. The following is a detailed explanation of the oil radiator:
1. Definition and Function
The oil radiator is mainly used to force the oil to cool, prevent the oil temperature from being too high and increasing the oil consumption, and prevent the oil from oxidation and deterioration. In high-performance, high-power reinforced engines, such as supercharged engines, due to the large heat load, an oil radiator must be installed to maintain a stable temperature and appropriate viscosity of the oil.
2. Type
According to the cooling method, the oil radiator can be divided into water cooling and air cooling:
1. Water-cooled: The coolant in the engine cooling system circuit is introduced into the oil cooler installed on the automatic transmission for cooling, or the hydraulic transmission oil is introduced into the lower water chamber of the radiator of the engine cooling system for cooling. 2. Air-cooled: The hydraulic transmission oil is introduced into the oil cooler installed on the windward side of the front grille for cooling.
3. Working Principle
The working principle of the oil radiator is based on the conduction and radiation of heat. When the engine is working, the oil will enter the oil radiator from the oil pump outlet. The oil first passes through the inlet pipe of the radiator core and enters the heating section, where it exchanges heat with the high-temperature radiator core to increase the oil temperature. Then, the heated oil enters the condensing section and exchanges heat with the cold air blown by the driving fan to reduce the oil temperature. Finally, the cooled oil returns to the engine through the outlet pipe, completing a cycle.
4. Structural characteristics
The oil radiator is mainly composed of a radiator core, an oil tank and a drive fan. The radiator core is the main heat dissipation component, which is welded from many thin steel plates to form the main structure of the radiator. The oil tank is a container for storing oil, and is equipped with a temperature sensor and a liquid level sensor to monitor the oil temperature and liquid level. The drive fan is used to force heat dissipation so that the oil in the radiator core can be cooled quickly.
5. Common faults and causes
The common faults of water-cooled oil radiator in use include copper tube rupture, front/rear cover cracks, gasket damage and copper tube blockage, etc. These faults may be caused by the operator not draining the cooling water inside the diesel engine body in winter.
6. Maintenance and care
To ensure the normal operation of the oil radiator and extend its service life, regular maintenance and care are required, including checking whether the radiator core is blocked or damaged, checking the working status of the temperature sensor and liquid level sensor, and cleaning the dust and dirt on the surface of the radiator.
In summary, the oil radiator is an important cooling device in the diesel engine. It prevents the oil temperature from being too high by forcibly cooling the oil and ensures the normal operation of the engine. During use, it is necessary to pay attention to maintenance and care, and timely discover and solve faults. Specializing in Toyota auto parts, you can consult and ask for price WhatsApp:+86 18814056348 WeChat:+86 18814056348
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