有几台柴油机功率不足。发动机运转时拆下喷油器回油管,发现喷油器回油量明显过多,回油油束大,严重的从回油口喷出30多厘米高。原因是针阀体与喷油器壳体的接合端面由于严密配合被破坏而渗漏油。喷油器回油过多,则喷入燃 Several diesel engines lack of power. When the engine is removed, the fuel injector return pipe is removed and the fuel return amount of the fuel injector is obviously too much. The oil return bunches are large and the fuel is discharged from the oil return port by more than 30 cm in height. The reason is that the needle valve body and the injector housing joint end face is damaged due to close cooperation and leakage of oil. Injector too much oil, then injected into the burning