Causes and Solutions of Oil Burning in Diesel Generator

1. Too much oil in the oil pan

The oil in the oil pan is not the more the better, in the Shangchai diesel generator oil pan add too much oil, not only will make the crankshaft in high-speed rotation of the larger resistance at the same time also make the big end of the connecting rod drive a lot of oil splashed to the cylinder wall, a lot of oil in the piston ring has not been scraped off the fleeing into the combustion chamber and participate in combustion, resulting in a lot of blue smoke and carbon to speed up the wear and tear; too much oil will also lead to crankcase too much oil will also lead to the crankcase space becomes smaller or make the oil cavity negative pressure increases causing the oil to run up to the cylinder or have the phenomenon of external leakage.

2. Supercharger failure

For Cummins diesel generators with turbocharger, if the engine burns oil, and exhaust blue smoke, the engine power does not change, and in the supercharger pressure port or air intake hose with oil stains, can be judged as the supercharger pressure side of the floating bearing and sealing device damage and oil leakage. The oil will be carried into the engine intake with the airflow of the supercharger compressor, and will be sucked into the combustion chamber to participate in the combustion resulting in blue smoke from the engine. In the supercharger failure should be timely repair or replacement of new parts to ensure the normal operation of the engine, extend the maintenance cycle and reduce the cost of use.

3. Too much oil in the air filter

For the engine with oil bath air filter, if there is too much oil in the oil pan of the filter, the engine will be running at high speed, too much oil will enter the combustion chamber through the air intake duct and participate in the combustion, resulting in the phenomenon of burning oil and blue smoke and a lot of carbon, speeding up the wear and tear of the engine, affecting the normal service life of the engine. Therefore, when adding clean oil to the oil bath filter, you should pay attention to the height of the oil level, generally add to the middle of the upper and lower carved line, do not add too much.

4. piston, piston ring, cylinder liner wear serious

Excessive wear of the piston or cylinder liner in the engine work, its fit clearance will increase a lot. This engine will make the splash to the cylinder wall oil is easy to flee into the combustion chamber to participate in the combustion, while the crankcase because of the cylinder and piston and piston ring seal is not tight resulting in a large amount of exhaust gas, engine power dropped significantly, the exhaust pipe out a lot of blue smoke, this situation should be timely engine overhaul, and according to the wear of the piston and cylinder liner to repair or replace the new parts. Excessive wear of the piston ring, not only will make the ring elasticity drop lose elasticity sealing role, and will have the phenomenon of fracture, so that the oil ring scraping, cloth oil role is weakened, may also occur pull cylinder phenomenon, resulting in a large amount of oil into the combustion chamber to participate in combustion, and exclude a lot of blue smoke. In this case, when repairing and assembling the piston ring, the carbon on the old piston should be cleaned up first without changing the piston, and then the piston ring should be installed correctly according to the assembly position (when assembling, pay attention to the position of the ring and the direction of the cut, the inner cut surface should face the top of the piston), and replace the new ring and new piston if necessary.

5. The piston ring size is not suitable

If the piston ring of inappropriate size is selected, it will easily cause oil flicking phenomenon. Different types of engines, different working conditions, need a variety of different special design and manufacture of piston ring set. Each type of piston ring set, for a particular purpose and system, if used in the wrong place, it is impossible to control the diesel engine oil consumption.

The above is the cause and solution of burning oil of diesel generator introduced by Dingbo Power, if you want to know more information about diesel generator, welcome to contact us by email at dingbo@dieselgeneratortech.com.