Engine oil is the most common fault. This failure can be manifested as a variety of phenomena, but can also be caused by a variety of reasons, and directly affect the life of the engine, but also increase the cost of use. Therefore, grasping the judgment and elimination methods of this failure can realize cost-saving and efficiency improvement.
First, the common fault phenomenon of burning oil
1. With no engine leakage, the oil in the oil pan drops significantly.
2. The gas discharged from the exhaust pipe has a burning smell of burning oil.
3. Exhaust gas exhausted blue.
4. The main exhaust pipe nozzle and exhaust manifold are wet.
5. Exhausted oil stains at the vent.
6, Exhaust pipe nozzle Mars discharge from time to time.
Second, the cause of engine oil failure
1. Cylinder, piston with a large gap.
2. The piston ring is heavily worn, and its opening and side clearance are too large.
3. The piston ring is reversed. The correct mounting orientation is for the twisted ring to have the inner groove up and the conical ring up.
4, valve and catheter with the gap is too large.
5. Crankcase air pressure balance hole (or breathing hole) plugged.
Third, the engine burning oil failure can cause consequences
1. Oil consumption increased.
2. Increased fuel consumption.
3, increase the burning of carbon deposits, accelerate the wear of the relevant parts.
4. The increase in under-breathing accelerated the aging of the oil.
5, the oil is not added in time, can cause serious failure of the burning tile holding shaft.
Fourth, the engine burning oil failure, due to different conditions, can take different exclusion methods.
1. Multi-cylinder machine, just repaired soon, running engine burning oil slightly, this is normal. When the phenomenon of burning oil in individual cylinders occurs for a period of time, this is mostly a problem with the cylinder piston rings. Such as counterparts, broken and so on.
2. Multi-cylinder machine, in the normal use cycle, when a certain cylinder oil burning phenomenon occurs, the cylinder piston rings are mostly problems, such as: broken, cemented or weakened elasticity, broken and so on. Should replace the accessories, it is best to use the accessories of the supporting plant, if the effect is not good, you can use the second accessory factory accessories.
3. In a multi-cylinder machine, when the service time is close to the maintenance cycle, when the phenomenon of oil burning in each cylinder occurs, this is a normal situation, which means that the engine has been overhauled.