论文部分内容阅读
现在日本内燃机车用标准发动机是DMF15HS系列柴油机。在φ140的活塞上装四根活塞环。这种发动机的燃气窜漏量大,为此考虑各种解决办法。电源用发动机增加一根活塞环,使用五环活塞。 试验表明,窜漏燃气导致活塞温度上升,使发动机润滑油提前老化,对发动机零部件的耐久性产生不良影响。另一方面,燃气大量窜入曲轴箱时,曲轴箱内的压力增高,往往使曲轴箱的呼吸孔喷出滑油,喷出的滑油多时,就会因缺油引起油压下隆,造成发动机停车。
Now Japan’s standard diesel locomotive engine is DMF15HS series diesel engine. Four pistons are mounted on the φ140 piston. The amount of gas leaked from this engine is large, so various solutions are to be considered for this purpose. Power engine to add a piston ring, the use of ring piston. Experiments show that the blowby gas causes the piston temperature rise, the engine oil aging ahead of time, the durability of engine components have a negative impact. On the other hand, a large number of gas fled into the crankcase, the crankcase pressure increases, often make the crankcase breather hole spray oil, oil spurting out for a long time, it will be due to lack of oil caused by drag down, resulting Engine parking.