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拉缸就是活塞在缸套中运动时,因有异物或某零件的损坏,把缸套和活塞划出竖向沟纹。遇有此种情况,柴油机冒黑烟,运转吃力。严重时,活塞卡死在缸套里,柴油机熄火,播转曲轴转不动。轻微时,柴油机仍能运转,但因缸套和活塞拉伤,压缩与作功行程向曲轴箱窜气,烧、捧机油,起动困难,功率下降,油耗增加。拉缸的一般原因有:柴油机长时间超速、超负荷工作,使机器过热,活塞严重偏缸;阻水圈密封不好,冷却水漏入机油中,使润滑不
Pull cylinder is the piston in the cylinder liner movement, due to foreign body or a part of the damage, the liner and the piston out of the vertical groove. In such a case, the diesel engine runs black and runs hard. In serious cases, the piston stuck in the cylinder liner, the diesel engine flameout, slipping crankshaft motionless. Slightly, diesel engine can still run, but due to cylinder liner and piston strain, compression and work trip to crankcase gas, burning, holding oil, starting difficulties, power loss, fuel consumption increases. General reasons for pulling the cylinder are: diesel for a long time speeding, overload work, so that the machine overheating, serious cylinder partial cylinder; impervious seal impermeable, cooling water leakage into the oil, so lubrication is not