What is the normal value of engine oil consumption?
1 Answers
According to the Chinese national standard GB3743-84, the ratio of engine oil to fuel consumption should be less than 1%. Based on this calculation, for a car with an engine displacement of 1.6-2.0 liters and a fuel consumption of 10 liters per 100 kilometers, the engine oil consumption should be less than 1 liter per 1,000 kilometers. Factors affecting engine oil consumption include: 1. Viscosity of the engine oil: The lower the viscosity of the engine oil, the relatively worse the sealing effect, and the amount sucked into the combustion chamber will increase. 2. Driving conditions of the vehicle: High-speed driving and frequent acceleration and deceleration will increase engine oil consumption. Different working conditions result in different amounts of engine oil consumption. During the break-in period of the engine, the oil consumption is relatively high. Therefore, the engine oil consumption is generally not evaluated during the break-in period. 3. Poor fuel quality: It is easy to form carbon deposits in the piston ring groove, which will cause the piston ring to stick for a long time, and the oil ring will lose its oil scraping effect, causing the engine oil to enter the combustion chamber from the gap between the piston and the cylinder wall, forming real oil burning. After the engine has been used for a certain number of kilometers, the piston rings and cylinder walls wear out, causing the matching gap to exceed the limit, and a small part of the engine oil will also enter the combustion chamber, forming real oil burning. The valve oil seal is damaged or hardened and aged.
