Yuchai YC6J125Z Diesel Engine Parts 330-1002064B Cylinder Head

Yuchai Gear Features

Cylinder liners are generally divided into dry type and wet type. Dry cylinder liner: The outer wall does not directly come into contact with cooling water, with a thin wall thickness of 1mm to 3mm, an interference fit with the rigid bearing hole, less prone to water and air leakage, and high strength and hardness. The advantage is good sealing performance, which is not easy to cause water and air leakage. The cylinder body has a high structural stiffness, a small distance between the cylinder centers, and a compact overall structure. The disadvantage is that the casting is more complex and disassembly is troublesome. Wet cylinder liner: The outer wall is directly in contact with cooling water, and the outer surface is machined with protruding rings on both the top and bottom to ensure radial positioning. The wall thickness is generally 5-9mm. The advantage is that there is no closed water jacket on the cylinder block, which is convenient for casting, easy to disassemble and replace, and has good cooling and heat dissipation effect. The disadvantage is that the stiffness of the cylinder block is poor, which is prone to air and water leakage.

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