Hot load and mechanical load coupling make piston to produce crackle, piston-ring glued and scuffing of cylinder bore and so on, serious damage the durability and reliability of the internal combustion engine.
热负荷与机械负荷的综合作用过大导致活塞产生裂纹、拉缸、咬缸以及活塞环胶结等故障，严重危害内燃机的耐久性和可靠性。
Hot load and mechanical load coupling make piston to produce crackle, piston-ring glued and scuffing of cylinder bore and so on.
热负荷和机械负荷耦合将导致活塞产生裂纹、活塞环胶结以及拉缸等。
With the analysis of clearance fit between piston and cylinder lin-er and the measurement of static deformation of engine block and cylinder liner, an improvement was proposed to strengthen the rigidity of 490 engine block in or-der to eliminate the early scuffing of cylinder bore.
本文针对490型柴油机出现的早期拉缸现象，通过对活塞与气缸套配合间隙的分析试验及对机体、缸套静变形的测量分析，着重提出了加强机体刚度的改进措施。
Improvement of Scuffing of Cylinder Bore for 490 High Speed Diesel Engine
490型高速柴油机拉缸的改进研究
When the working situation of this pair deteriorates, the engine output power and life time of some important parts will be reduced accordingly. Once the conditions gets worse, the malfunction like cylinder bore scuffing or halt then will be appearing to disturb the normal operation.
当该摩擦副运行不佳时，会降低内燃机的输出功率，缩短内燃机零部件的使用寿命，如若运行条件进一步恶化，则会产生拉缸或内燃机停机等严重故障，直接影响发动机的正常工作。