Motorcycle cylinder jacket laser surface micro-moulding construction

Abstract

The invention discloses a motorcycle cylinder jacket laser surface micro-moulding construction comprising a piston 1, a cylinder jacket 2 and a piston ring 3. The motorcycle cylinder jacket laser surface micro-moulding construction is characterized in that the surface of the cylinder hole of the cylinder jacket 2 adopts non-uniform array layout to carry out laser surface micro-moulding; the display density of C-zone micro-moulding near a top dead center is bigger than that of a D-zone micro-moulding, the optimal ratio range of C-zone area and D-zone area is 10-25%, and the optimal ratio of display density of C-zone micro-moulding to the display density of D-zone micro-moulding is 3:1-2:1. Because the strategy of non-uniform array surface micro-moulding processing is adopted, the invention can carry out surface micro-moulding to the motorcycle cylinder jacket as required, so that the friction characteristics of the piston ring, the piston and a cylinder kinematic pair can be improved within a large range so as to furthest reduce the friction loss of the motorcycle motor.

Description

technical field [0001] The invention relates to the treatment of the surface topography of a motorcycle cylinder liner, in particular to a laser surface micro-modelling structure of a motorcycle cylinder liner. Background technique [0002] The engine is the heart of the motorcycle, and its working performance directly affects the quality of the motorcycle. Among the many parts of a motorcycle engine, there is one part that is crucial to the engine, and that is the cylinder liner. As we all know, the cylinder liner, piston and piston ring constitute the most important kinematic pair in the engine. It plays the role of sealing, guiding and carrying. Its working environment is very harsh, especially in modern motorcycle engines, the speed is generally as high as 9000r / min Above, the resulting high speed, high temperature, and high pressure are severe tests for the cylinder. The data show that the friction power consumption of the piston connecting rod system can account for ...

AI Technical Summary

Problems solved by technology

So far, laser surface micro-modeling has been used in the treatment of engine cylinder liners. The strategy is to uniformly process certain lines or pits on the entire working surface where the friction between the cylinder and the piston ring occurs. The advantage is that the processing procedure is simple, but this The disadvantage is that the lines and pits cannot be set according to the working characteristics of the engine, that is, the cylinder liner cannot be micro-shaped as required

In fact, the motorcycle engine is characterized by high speed, and the relative movement speed of the piston and the cylinder liner within the range of the working stroke varies greatly, especially near the top dead center, where the working temperature is high and the relative speed is slow, which creates dynamic lubrication. The oil film is very unfavorable. At this time, it is obviously inappropriate to adopt the strategy of "uniform micro-shaping"

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