During engine operation, oil lubricates critical components like the turbocharger, pistons, and cylinder liners. In this process, some oil is burned, while some evaporates due to the engine’s high heat and exits through the breather. If excessive oil consumption is suspected, it’s essential to properly assess oil consumption levels, check engine conditions (e.g., exhaust smoke, power output, blow-by gases), and inspect for oil leaks.
Normal Oil Consumption
For all SANY engine models, an oil consumption rate of 0.2% is considered within the normal range (2 liters of oil consumed per 1,000 liters of fuel burned).
Factors Influencing Oil Consumption
1. Manufacturing Tolerances
The components of an engine have specific tolerance ranges. Variations within these tolerances can result in differing oil consumption rates even for the same model.
2. Operating Conditions
- Higher engine loads and temperatures can reduce oil viscosity, increasing the likelihood of oil entering the combustion chamber.
- Oil consumption may vary depending on working conditions.
3. Uneven Terrain
When machines operate on slopes or uneven surfaces, oil in the sump moves excessively, often striking the crankshaft. This creates an oil mist that may exit through the breather, leading to increased consumption.
Causes of Abnormal Oil Consumption
1. Neglecting Air and Oil Filter Maintenance
Dirty air or contaminated oil can accelerate abnormal wear on pistons and cylinder liners, increasing oil consumption.
2. Using Low-Quality Fuel
Substandard fuel can lead to carbon deposits and harmful substances in the combustion chamber, causing abnormal wear on cylinder liners and pistons, which in turn raises oil consumption.
Proper maintenance, quality fuel, and routine inspections are key to managing and mitigating oil consumption issues effectively.
