3KR1 Diesel Engine Cylinder Liner 1-87813767-0 8-92421200-0 For ISUZU

Causes and Prevention

Diesel engine cylinder pulling refers to the phenomenon of excessive wear, burrs, scratches, scratches, cracks, or bites on the working surface caused by the intense interaction between the piston components and the cylinder mating working surface (caused by friction). Cylinder pulling is the adhesive wear to varying degrees under lubrication conditions. When cylinder pulling is light, it causes damage to the cylinder liner and piston components, and in severe cases, it can cause a vicious engine damage accident of cylinder biting. When pulling the piston or connecting rod, it can damage the machine, Therefore, it is of great significance to analyze the formation mechanism of the diesel engine cylinder pulling fault, find out the early prediction and correct countermeasures, correctly manage and use the diesel engine, improve the reliability and extend the service life, and improve the management personnel's strain energy for troubleshooting. Reasonable use and attention to maintenance (regular inspection) can also reduce the diesel engine cylinder pulling fault

1. Cylinder pulling phenomenon:

The mechanism of cylinder pulling damage is mostly due to local damage to the lubricating oil film at the sliding part. At this time, two relatively moving surface protrusions first come into contact with metal, and then a small "melting" phenomenon occurs locally. The melting part is torn apart due to the relative movement of the components. During this process, the metal surface forms a hardened layer, and when the hardened layer is damaged, The metal abrasive particles generated will become the abrasive material that intensifies surface wear. During the short period of so-called "melting wear", uneven wear marks parallel to the centerline of the cylinder appear on the surface of the piston and cylinder liner, which is the phenomenon of cylinder pulling. In severe cases, the sliding parts may completely adhere or get stuck, and even cracks may occur in the weak parts of the two surfaces, causing damage to the parts, namely cylinder biting. Therefore, the fundamental cause of cylinder pulling is melting wear.