The fuel supply system of the diesel generator set has a low pressure oil circuit and a high pressure oil circuit, the low pressure oil circuit refers to a section of the oil circuit from the tank to the low pressure oil chamber of the injection pump, the high pressure oil circuit refers to a section of the oil circuit from the plunger chamber of the high pressure pump to the injection nozzle, in the supply system of the plunger pump, the high pressure oil circuit will not have air infiltration, there is a leak point, which will only lead to the leakage of fuel, and find a way to block the leak point.
Diesel generator fuel supply system low-pressure oil circuit mostly use soft hose, hose is easy to produce friction with parts, resulting in oil leakage and intake, oil leakage is easier to find, and a damaged intake in the pipeline is not easy to find, the following is the method to determine the low-pressure oil leakage point search.
Method 1: The air in the oil circuit is drained, and after the engine is started, the leakage of diesel is found, that is, the leakage point is located.
Method 2 of judging the leak point: Loosen the exhaust screw of the injection pump of the diesel generator set and pump the oil with a manual oil pump. If it is found that the oil flow of a large number of bubbles begins to discharge at the vent screw, and after repeated hand pumping, the bubbles still do not disappear, it can be determined that there is a leak point in the negative pressure oil circuit from the oil tank to the oil pump section, the section of pipeline should be removed, and then the pressure gas should be passed through, and placed in the water to find the bubbling place. That’s where the leak is.
In addition to the pipeline problems, various gaskets at the pipeline joints may also leak due to improper installation, deformation, aging damage, etc., and become leak points. Before detailed inspection of the pipeline, check these nodes first.
The hard oil pipe outside the tank is generally less prone to failure, and after the above inspection can not find the leak point, it can be checked later.
For more questions about the generator set, please call the Beidou Power team. More than ten years of professional production and sales of power generation equipment experience, more professional engineer team to serve you, choose Beidou power is to choose rest assured, welcome on-site factory inspection.
Post time: Dec-18-2024