有一台东风发动机经大修后,油、电路均正常,发动机曲轴摇转也轻松,轴瓦的松紧度均合适,就是发动机怎么也发动不着。无耐只有拆卸重新检查。当拆下缸盖摇转发动机曲轴时,发现六个缸的活塞都不能达到上止点的位置。经测量,是因曲轴的连杆曲柄半径不合规格,较标准短了2mm,导致发动机的压缩比和排量 Have a Dongfeng engine overhaul, the oil, the circuit is normal, crankshaft crankshaft is also easy, the tightness of the bearing are appropriate, that is how the engine can not start. No resistance only disassemble re-check. When removing the crankshaft crankshaft crankshaft and found that the six cylinder piston can not reach the top dead center position. Measured by the connecting rod crankshaft radius of substandard specifications shorter than the standard 2mm, resulting in the engine’s compression ratio and displacement