发电机组能够输出的大功率与技术说明书规定的额定功率的比较，可以说明发电机组技术状况的优劣。在正常使用过程中，整机功率下降的程度也可说明零件的磨损程度，例如气缸套活塞活塞环等零件的磨损。
The comparison between the high power output of a generator set and the rated power specified in the technical manual can indicate the technical status of the generator set. During normal use, the degree of power reduction of the whole machine can also indicate the wear of parts, such as the wear of cylinder liner, piston, piston ring and other parts.
柴油消耗增多。柴油消耗量的增加与很多因素有关。如喷油泵的分泵油量调整过大，喷油嘴出现窜油现象，冷却效果差，进排气门密封不严，润滑油的油质较差，气缸压力过低等会使全自动发电机组运行中的用油量增加，所以发电机组油量的增加是一个综合评定指标。
Diesel consumption has increased. The increase in diesel consumption is related to many factors. If the oil quantity of the sub pump of the fuel injection pump is adjusted too much, the fuel injection nozzle shows oil leakage, the cooling effect is poor, the sealing of the intake and exhaust valves is not tight, the oil quality of the lubricating oil is poor, and the cylinder pressure is too low, etc., it will increase the oil consumption during the operation of the fully automatic generator set. Therefore, the increase in the oil quantity of the generator set is a comprehensive evaluation indicator.

润滑油消耗增加。在发电机组正常运转过程中，润滑油的增加主要反映在气缸和活塞组的磨损程度的增大，而使机油窜入发电机组燃烧室的机油越多，发电机组排气管冒蓝烟也越大。
The consumption of lubricating oil has increased. During the normal operation of the generator set, the increase in lubricating oil is mainly reflected in the increase in wear of the cylinder and piston group, and the more oil enters the combustion chamber of the generator set, the greater the blue smoke emitted from the exhaust pipe of the generator set.
气缸压力减小。柴油到气缸压力的大小，可说明气缸套与活塞组件及进排气门与气门座的漏气程度。
The cylinder pressure decreases. The pressure of diesel to the cylinder can indicate the degree of air leakage between the cylinder liner and piston components, as well as the intake and exhaust valves and valve seats.
曲轴压力减小。曲轴压力的大小可判别全自动发电机组气缸套和活塞组件的磨损程度。
The crankshaft pressure decreases. The magnitude of crankshaft pressure can determine the degree of wear on the cylinder liner and piston components of a fully automatic generator set.
机油压力减小。发电机组在正常运转过程中，机油压力的高低可判断出轴承的磨损情况，机油压力越低，一般说明轴承的磨损间隙越大。
The oil pressure decreases. During normal operation of the generator set, the level of oil pressure can determine the wear of the bearings. The lower the oil pressure, the larger the wear clearance of the bearings.
润滑油中的杂质增多。润滑油中杂质的多少克判断全自动发电机组内部个需润滑部件的磨损程度。通过试验测定润滑油中各元素的含量也能判断各运动部件的磨损速度。
The impurities in the lubricating oil increase. The amount of impurities in the lubricating oil is used to determine the degree of wear of individual components that need to be lubricated inside the fully automatic generator set. By testing the content of various elements in lubricating oil, the wear rate of each moving component can also be determined.