Old riders know that motorcycle engine over-temperature will reduce the life of diesel engines, and more serious will seriously harm the safe driving of motorists. So, how is the motorcycle engine overheating caused?
The circulation system of the motorcycle engine is carried out at a high temperature, and the maximum temperature when the flammable mixture is ignited reaches about 2000 °C. The frictional heat caused by the friction of high-temperature natural gas and fitness parts will increase the temperature of components such as the piston rod, engine block and cylinder head. The high temperature is very likely to cause thermal expansion, which reduces the impact toughness of the diesel engine components, so that all normal mutual matching clearances are changed due to excessive thermal deformation. Therefore, the motorcycle engine must have a reliable refrigeration system to ensure that the diesel engine is working properly. The normal operating temperature of the motorcycle engine can not be too low or too high, usually the grease temperature is 55 °C up and down. When the temperature of the air-cooled engine oil is above and below 99 °C, and the temperature of the water-cooled and cooling diesel engine is around 95 °C, the output of the diesel engine will be too high, which will reduce the output power and increase the noise. Even if the ignition switch is turned off, the diesel engine will not be shut down. In addition, the diesel engine cylinder head and the oil on the engine block will be burned, and the diesel engine will have grease leakage. This indicates that the diesel engine is working abnormally and has over-temperature common faults.
The adverse effects of diesel engine over-temperature are relatively large, because over-temperature will cause the engine displacement to decrease, accelerate the fatigue, and increase the fuel consumption; because the over-temperature causes the diesel engine to ignite abnormally; because the over-temperature causes the grease mold zooming plant, fitness exercise The film in the middle of the piece is destroyed, and the damage of the parts is aggravated; because the over-temperature causes the crankshaft of the engine to be bitten, the piston ring is broken, the piston ring is broken, the cylinder is pulled, and the cylinder is held, which reduces the service life of the diesel engine and seriously jeopardizes the safe driving of the driver. .