Diesel generator set leaks oil, how should users find the leak and plug it?

Oil leakage of diesel generator sets is a common fault problem. The fuel injectors, fuel pipes, valve covers and other parts of the fuel system are all parts that may leak oil. In addition to increasing the fuel consumption of diesel generator sets, oil leakage It may also cause the unit to be difficult to start or run erratically, so users must pay attention. This article focuses on how to find and plug leaks in the pipelines in the fuel supply system of diesel generator sets.

Diesel generator sets

 

       Oil leakage of diesel generator sets is a common fault problem. The fuel injectors, fuel pipes, valve covers and other parts of the fuel system are all parts that may leak oil. In addition to increasing the fuel consumption of diesel generator sets, oil leakage It may also cause the unit to be difficult to start or run erratically, so users must pay attention. This article focuses on how to find and plug leaks in the pipelines in the fuel supply system of diesel generator sets.

 

       We know that the fuel supply system of diesel generator sets is divided into low-pressure oil circuit and high-pressure oil circuit. A section of the oil nozzle. Most of the low-pressure oil circuits use soft rubber hoses, and the hoses are prone to friction with the parts, resulting in oil leakage and air intake.

 

       The following is the method for judging the leakage point of the low pressure oil circuit.

 

       1. Drain the air in the oil circuit, and after starting the engine, find the place where the diesel leaks, which is the leak point.

       2. Loosen the bleed screw of the engine fuel injection pump, and pump the oil with a manual oil pump. If it is found that a large amount of oil flow of air bubbles begins to discharge from the bleed screw, and after repeated hand pumping, the bubbles still do not disappear. There is a leak in the negative pressure oil circuit of the oil delivery pump section. This section of pipeline should be removed, and then pressurized gas should be introduced into the water, and the place where the bubbles are found is the leak point.

       3. In addition to the pipeline problems, various gaskets at the pipeline joints will also leak due to improper installation, deformation, aging damage, etc., and become leak points. node to check. The hard oil pipe in the section outside the fuel tank is generally less faulty. If the leak point cannot be found after the above inspection, the section can be inspected again.