What should I do if the engine burns oil after the excavator rolls over

First, the main reason for burning engine oil.

1. Use engine oil with poor quality or viscosity grade that does not meet the requirements. In addition, too low or too high oil viscosity can lead to poor engine lubrication, increased wear of piston rings and cylinder walls, and reduced sealing performance, resulting in oil burning.

2. The matching gap between the piston ring and the cylinder wall is too large, the piston ring is improperly installed or the sealing is poor, and the oil on the cylinder wall enters the combustion chamber, causing the phenomenon of burning the engine oil; In addition, poor sealing performance of the valve seal, damage to the crankcase forced draft valve (PCV) or crankcase vent blockage can cause excessive pressure in the crankcase to cause the oil to enter the cylinder with the crankcase gas and participate in combustion.

3. Burning engine oil caused by excessive oil filling. When the oil is filled above the center line, the part of the engine lubrication process that passes through splash lubrication will be too much into the combustion chamber due to the high oil pressure.

4. Oil leakage from turbocharger. The turbocharger is mounted at the front of the exhaust pipe and operates at a very high temperature, and the turbine and pump wheels can reach 120,000 revolutions per minute when the engine is running at full load. The turbine shaft has oil-lubricated floating bearings, and the car has one oil passage to the turbocharger.

Oil leaks from pipes or bearings can allow oil to seep from the turbocharger into the exhaust pipe. When the exhaust pipe temperature is high, the oil is baked and discharged into blue smoke.

5. There is leakage in the valve oil seal, which means that the oil leaks into the combustion chamber through the valve oil seal.

Second, the method of preventing the burning of engine oil.

1. Use engine oil that meets the technical requirements of the vehicle. Many car owners never read the vehicle manual, and they don't know what quality and viscosity grade oil their vehicles use for a few years, and there is a lot of arbitrariness in the use of engine oil. When using engine oil, one is to pay attention to the quality index, and the other is to pay attention to the viscosity index.

The quality index refers to the grade above SL as much as possible, and the viscosity index should be strictly in accordance with the provisions of the viscosity index in the automobile manual, and cannot be too low or too high.

2. Avoid frequent rapid acceleration and long-term ultra-high-speed driving. When the engine rotates at ultra-high speed, it is easy to break the lubricating oil film, resulting in poor lubrication and dry grinding of the rotating parts, and when it becomes a regular operation, it will make the engine wear abnormally and burn the oil, therefore, maintaining economic speed is one of the best ways to prevent the phenomenon of burning oil.

3. The oil must meet the specifications when filling. When the oil filling volume exceeds the center line, the repairman should be asked to pump out the excess oil, in addition, the oil volume should be observed before the next day.

4. If you find that the engine oil is burned, go to the maintenance station for inspection as soon as possible. If it is due to engine failure (such as poor piston ring sealing, valve oil seal leakage, cylinder gasket leakage, etc.), you should go to the maintenance station as soon as possible to check and repair the fault as soon as possible.

Under the advice of the master, the excavator rolls over and rightens the starting engine after it is stuck, and what to do if the oil is burned after repairing the valve ejector rod.

The common causes of modern excavator oil burning failures are: (1) the air filter of the excavator is too dirty and not cleaned in time; (2) The oil used by the excavator is wrong, or the quality of the oil used is too poor and does not match the model of the excavator; (3) Excavator engine blow-by; (4) The oil seal of the turbocharger in the excavator is damaged; (5) There is a problem with the engine; (6) Piston ring counterpart; (7) There is a problem with the four supporting facilities of the excavator and it needs to be replaced; (8) Insufficient air intake; (9) Poor atomization of the fuel injection pump, wrong fuel supply time, damage to the fuel injection nozzle, etc. (10) The engine valve clearance is too large or too small.

11) In addition, after the oil pump burns the oil fault phenomenon of the excavator, the excavator oil pump is generally calibrated first, if the oil pump is not a problem, check whether the oil pipe of the excavator is leaking, check whether the air filter element of the excavator is dirty, whether there is a problem with the turbocharging, and you can replace the excavator four matching.

1. Carbon deposition occurs in the combustion chamber, which makes the gas ring of the piston ring stuck, and the sealing is poor.

2. The lubrication system produces clumpy sludge, which blocks the oil return hole of the oil ring and weakens the performance of scraping and renting oil.

3. Wear occurs between the piston and the cylinder wall.

4. The valve seal is corroded and aging, and the sealing performance fails.

5. In addition, there is a crankshaft collapse box ventilation system (exhaust valve) on the car, and if there is a problem, it will also aggravate the consumption of oil.

Loader. Burning engine oil is caused by various reasons for the gap in fitting.

Enlargement and poor sealing, resulting in the oil jumping up to the combustion chamber and burning the oil.

"Burning oil" means that the oil enters the combustion chamber of the engine and participates in the combustion together with the mixture. The phenomenon of "burning oil" in the vehicle will damage the oxygen sensor of the vehicle too quickly, resulting in an increase in carbon deposition in the combustion chamber, unstable idling, weak acceleration, rising fuel consumption, excessive exhaust emissions and other adverse consequences.