Views: 3 Author: Site Editor Publish Time: 2020-05-04 Origin: Site
The cylinder liner material is high phosphorous cast iron.
The heat sink and cylinder liner are cast as a whole. In order to increase the stiffness of the cylinder liner, the shape of the wall thickness of the cylinder liner along the axis direction is waist-shaped, the two ends are thick and the center is thin, and there are 26 fins.
The thicker upper end wall of the cylinder liner increases the contact surface with the cylinder head, which is conducive to heat transfer and heat dissipation; the thicker lower end wall is to strengthen the rigidity and reduce the deformation caused by the tightening of the cylinder head bolts and the pressure effect on the piston side. Cylinder head fins are provided with notches along the circumferential direction, and the positions of two adjacent notches are staggered by 30 ° to cause turbulence of the cooling air and improve the cooling effect of the fins; in the case of uneven temperature around the surroundings, reduce the deformation caused by the cylinder liner Thermal stress in use,
There are several cases of cylinder liner wear
1. The characteristic of normal wear is that the upper part of the cylinder liner is seriously worn. If it is used in a low temperature state for a long time, it will accelerate this form of wear.
2. Abnormal wear and tear caused by damage to the air filter can be checked for damage to the air filter or whether the air intake is not tight. You can use your hand to touch the inner wall of the air intake pipe to see if there is dust. The characteristic of this abnormal wear is that the upper and lower wear are more serious.
3. The abnormal wear caused by dirty oil is characterized by severe lower wear. The reason may be dirty engine oil and long oil change period. If the oil contains too much sulfur, it is also easy to cause such accidents.