1. the main reason of the cylinder is actually the "piston", piston ring and cylinder liner surface due to high temperature and "melt" strain. That is, the dry friction between the piston and the cylinder sleeve is caused by the interruption of the oil film. The hot friction heat causes the metal to melt and stick to the metal and break the metal particles nearby.
The most fundamental reason for the 2. cylinder block of diesel generating set is oil film interruption. According to the requirements of gas seal, the clearance between piston ring and cylinder liner should be as small as possible, which makes their lubrication conditions very unfavorable. When the surface of the contact surface is overloaded, the surface of the cylinder liner and the working face of the piston ring have been rubbed sharply between the working surface of the piston ring, resulting in a large amount of friction heat, which makes the temperature of the working surface rise sharply. The result is that the two friction surfaces are fused and adhered to cause tension.
It can be seen that poor oil supply, serious gas channeling and excessive contact stress of parts destroy oil film are the main reasons for cylinder pulling. In addition to lubrication, fit clearance, parts manufacturing quality, improper use may also cause diesel generator cylinder failure, specifically the following:
1. the clearance between the piston and the cylinder liner is too small, or there is no good running in before the load is formally carried out.
2. poor lubrication, such as small clearance, thin oil or no oil during assembly.
3. the diesel engine is overheated.
4. in assembly, the body is not clean or the piston is too dead.
The 5. piston and piston ring are poor in quality.
From the angle of use, we should also pay attention to avoiding the sudden increase of load or emergency stop. Before starting, it is best to shake the crankshaft with a few cycles to keep the friction surface a certain lubricating oil.
The performance of the 6 unit cylinder, the circuit and the sealing of the pipe. The lack of oil supply is a very common performance. The reason for the circuit needs to be checked by manual speed regulation or whether the electronic speed regulation is too high.
