You would like to ask why the maximum oil quantity reported by Weichai Rui Power Engine is higher than the theoretical calculated value. The reasons are:
1. . The front oil seal of the engine crankshaft is leaking oil, and this type of failure is common. The crankshaft oil seal is a skeleton rubber oil seal. An oil leak occurred due to installation and oil seal quality problems. It is recommended to change the installation method and use an imported crankshaft front oil seal or an oil seal provided by the manufacturer. The modified installation method is: disassemble the oil seal seat, install the oil seal, and then assemble the machine.
2. Oil leak at compressor end of compressor. Some users do not perform vehicle maintenance according to regulations. The air filter is seriously blockedé, resulting in excessive workload between the air filter and the intake pipe. Due to the pressure drop, a leak occurs at the end of the compressor. the compressor. Therefore, attention should be paid to cleaning and replacing the air filter element to ensure smooth air inlet. Some users do not pay attention to the use of the compressor. They slam the accelerator when starting the car in the morning and slam the accelerator before stopping the engine. These operations can easily damage the compressor oil seal, resulting in damage. oil leakage and increased oil consumption.
3. Too much engine oil. Due to excessive blind filling of engine oil, the pressure in the crankcase is high, causing leaks in various parts. Therefore, when adding engine oil, you should pay attention to adding it in the middle of the limitstop and bottom of the oil dipstick and upwards.
4. The air filter is clogged, causing excessive oil consumption. Since the air filter is not cleaned and replaced during use, the safety filter element is blocked due to water and oil contamination, resulting in poor air intake . A large amount of crankcase exhaust gas and engine oil is drawn into the cylinder, resulting in excess. engine oil consumption. It should be noted that the external filter element of the air filter should be replaced every 12,000 km of vehicle driving for secondary maintenance, and the internal safety filter element should be replaced every six months. The air filter element should be cleaned during each service. For engineering vehicles, the maintenance time should be shortened accordingly according to the usage conditions.
5. The quality of theThe engine oil does not meet the requirements. If you choose ordinary diesel engine oil, if the viscosity is too low, excessive oil consumption will occur and easily lead to early wear and burnout of the bearing. Please do not use regular diesel engine oil.
6. Blockage of the oil-gas separator is also the cause of excessive oil consumption. The crankcase exhaust pipe is connected to the oil and gas separator. The oil and gas separator can maintain the good lubrication performance of engine oil, extend the life of engine oil, maintain the surface condition of each pair of lubricating friction in good condition. , reduces wear and corrosion of machine parts and maintains pressure and pressure in the body. The outside air pressure is basically equal, which reduces oil leakage, allows mixed exhaust gas to be recycled, improvesimproves engine economy and reduces environmental pollution. The crankcase ventilation device should be cleaned frequently during maintenance to prevent clogging.
7. The air compressor piston, piston ring and cylinder wall are badly worn and oil is discharged from the exhaust valve. When such a breakdown occurs, various valves will be seriously damaged due to oil in the air circuit. If oil leaks from the air tank drainage, it is best to replace the air compressor piston, piston ring and cylinder. keep the game normal.
8. Early wear of cylinder liners and gas leaks also cause high oil consumption.