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What is the most ideal reference for cylinder boring?

1 Answers

SanChristian

07/30/25 6:32am

Cylinder boring is most ideally referenced to the lower plane. Purpose of cylinder boring: The purpose of cylinder boring is to eliminate surface shape errors on the cylinder to accommodate new pistons. Effects of cylinder surface wear: The degree of cylinder wear has the greatest impact on the power performance of a vehicle. Cylinder wear increases the clearance between the cylinder and the piston or piston rings, reducing the compression pressure in the cylinder and leading to a decline in engine performance. Along the cylinder axis, the wear forms a taper that is larger at the top and smaller at the bottom. The maximum wear occurs at the cylinder wall corresponding to the first piston ring when the piston is at top dead center. The upper part of the cylinder, which does not come into contact with the piston rings, shows almost no wear, forming a step. The wear around the circumference of the cylinder is also uneven, forming an irregular oval shape. The maximum radial wear area is usually near the opposite side of the intake valve.

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