A combustion chamber of a Diesel engine, constructed with cylinder liners, piston, cylinder cover, etc, operates under very serious conditions in high temperature and pressure. Then performances of the engine gradually decrease with operating hours, since various parts constructing the chamber are often worn down through their locomotive motions. Accordingly, we should pay deep attention on well maintenances of the above parts for upkeeping its high efficiential operations. On this purpose, we analyzed scientifically Engine Logs of T/V Kakuyo-Maru of 1044G/T with 2800ps through 12 years of 1975-1987 and could have some results as follows: 1) Cr-galvanization of piston rings greatly contributed to decrease for them to wear-down. 2) Simple regressions between wear-down ratios of cylinders in maximum, α, and operation time in hour of the engine are: athwartship: α=1.6684 exp (-1.1395h) (1/100mm/1000hr) longitudinal: α=1.3517 exp (-1.2075h) (1/100mm/1000hr)
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机译：柴油发动机的燃烧室由气缸套，活塞，气缸盖等构成，在高温和高压的严酷条件下运行。然后，发动机的性能会随着工作时间而逐渐降低，因为构成该腔室的各个零件通常会因其机车运动而磨损。因此，我们应高度重视上述零件的保养，以保持其高效运行。为此，我们对1975-1987年的12年中2800ps的1044G / T T / V Kakuyo-Maru T / V发动机日志进行了科学分析，其结果如下：1）活塞环的Cr镀锌极大地有助于降低他们疲惫不堪。 2）最大气缸耗损率α与发动机小时运行时间之间的简单回归为：竞技性：α= 1.6684 exp（-1.1395h）（1 / 100mm / 1000hr）纵向：α= 1.3517 exp （-1.2075h）（1 / 100mm / 1000小时）
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