What causes abnormal oil consumption?

1. Causes of engine oil consumption
When the engine is working, the oil lubricates various important parts (such as turbocharger, piston, cylinder liner, etc.). During this process, some of the oil will be burned, and some of the oil will be evaporated by the high heat of the engine and evaporate from the breather. discharge. When the engine is suspected of burning oil, you should first use the correct method to detect the oil consumption. At the same time, you should check the working condition of the engine (smoke exhaust, power, lower exhaust, etc.) and whether the engine is leaking oil.

For example: the oil consumption of all models of SANY engines is within the normal range of 0.2% (2 liters of oil are consumed for every 1,000 liters of fuel burned).

a. The fit of various engine parts has a certain tolerance range. The difference in assembly tolerances of these parts will lead to different oil consumption even for machines of the same model.
b. Depending on the operating conditions of the equipment, there may be differences in oil consumption. The greater the engine load and the higher the temperature, the viscosity of the oil will decrease and the amount of oil entering the combustion chamber will increase.
c. When the machine is operating in an inclined or uneven place, the oil in the oil pan sways back and forth, constantly colliding with the high-speed rotating crankshaft, forming a mist and being discharged from the vent to the outside, which increases oil consumption.

2. Causes of abnormal oil consumption
a. If the air filter and oil filter are neglected to be replaced, dirty air and plate-contaminated oil will cause abnormal wear of the piston cylinder liner and increase oil consumption.
b. Using inferior fuel will produce carbon deposits and harmful substances in the combustion chamber, which will cause abnormal wear of the cylinder liner and piston and increase oil consumption.

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