The running in of diesel generator set is a necessary measure to prolong the service life. There are inevitably geometric errors (position accuracy errors) and micro unevenness (bumps and dents formed by machining traces) in diesel engine assembly and main friction pair parts, such as cylinder and piston, piston ring, crankshaft journal and bearing. Therefore, the actual contact area of the matched two parts is small, while the load per unit area is large and the friction and wear are serious. In addition, due to the micro unevenness of the part surface, it is not easy to form an oil film (damaged by the convex peak), which aggravates the wear. If the diesel engine works at high speed and load, the convex peaks on the surface of the friction pair parts will be seriously scratched or torn, and the metal chips will become abrasives, aggravating the wear. When it is serious, it will cause local high-temperature melting into dissolution wear, resulting in cylinder burning. In fact, due to the rough surface of parts, the power consumed in friction is large. At this time, the high load operation of diesel engine is equivalent to overload. Therefore, it also aggravates the wear of parts.

柴油發(fā)電機組磨合期較長，而初期磨合階段磨損量較大，因此，此階段一般以工廠內進行，通過合理的磨合規(guī)范進行磨合，以減少磨損量，延長使用壽命，同時通過磨合期可以用來檢查和調整柴油機的裝配質量和性能參數(shù)，以及運行中出現(xiàn)的問題，以便及時排除，使柴油機質量和性能達到規(guī)范的要求。

The running in period of diesel generator set is long, and the wear amount in the initial running in stage is large. Therefore, this stage is generally carried out in the factory through reasonable running in specifications, so as to reduce the wear amount and prolong the service life. At the same time, the running in period can be used to check and adjust the assembly quality and performance parameters of diesel engine, as well as the problems in operation, so as to eliminate them in time and make the quality and performance of diesel engine meet the requirements of specifications.

新的或經(jīng)大修后的柴油發(fā)電機組，在正式使用前須經(jīng)60h磨合運轉，方可投入全負荷使用，以改善柴油機各運動部件的工作狀況，提高柴油機的運行可靠性和使用壽命。磨合應視柴油機用途和拖載方式的不同，來考慮具體磨合方案。原則上隨著磨合時間的增加，分階段逐步提高柴油機的轉速和負載，在整個磨合期內負荷以12h標定功率的50%~80%為宜，轉速應不大于標定轉速的80%為好。但在磨合的開始階段，空運轉或過小負載情況下的運轉時間不宜過長。每當修理更換過缸套、活塞、活塞環(huán)、連桿軸瓦和曲拐等零部件后，亦應按上述磨合工況適當進行短期磨合。

The new or overhauled diesel generator set can only be put into full load operation after 60H running in before formal use, so as to improve the working condition of all moving parts of the diesel engine and improve the operation reliability and service life of the diesel engine. The specific running in scheme shall be considered according to the different purpose and towing mode of diesel engine. In principle, with the increase of running in time, the speed and load of diesel engine shall be gradually increased in stages. In the whole running in period, the load shall be 50% ~ 80% of the rated power of 12h, and the speed shall not be greater than 80% of the rated speed. However, in the initial stage of running in, the operation time under the condition of idling or too small load should not be too long. Whenever the cylinder liner, piston, piston ring, connecting rod bearing bush, crank and other parts are repaired and replaced, short-term running in shall also be carried out according to the above running in conditions.