If you troubleshoot the fault discovery system during the operation process, you can use dynamic and static detection methods. Stars today with diesel generator As an example, we will first introduce to you what is the static detection method, namely the static compression method.
The so-called static compression method is a method of checking a compression fault in the stationary state of the diesel generator. In general, first check the low pressure oil line, check the high pressure oil line, check the injection quality, and check the injection time if necessary.
Check the low pressure oil circuit. First of all, check whether the oil line is blocked or air-locked. The method is to unscrew the oil drain bolt at the end of the low-pressure fuel pipe to see the flow of oil. If the oil flow is not smooth or has air bubbles, it means that the low-pressure oil path is partially blocked or air enters. It should be gradually compressed along the oil path to remove the fault until the clean bubble-free diesel oil flows out, and then tighten the bolts. If there is no air bubbles in the flow, it means that the low pressure oil line is good and the fault may be in the high pressure oil line.
Check the oil pump pump condition. First, loosen the high pressure oil pump bleeder screw. If there is no air bubble overflow, immediately tighten the bleeder screw; then check the pump oil condition, place the high pressure oil pump gear lever in the neutral position, and hold the thumb firmly out of the oil outlet. Raise the hand pump of the cylinder (the high-pressure pump without the pump handle can be used to shake the cylinder plunger pump oil). If no fuel is injected or the pressure is insufficient, the plunger may be worn out or the oil valve may be out of service. If the end face is in poor contact, remove the high-pressure tubing connector screw and hold the oil valve with your thumb. Check if there is any diesel oil around the oil valve. If there is oil, it indicates that the oil valve gasket is damaged or not sealed properly. , and then remove the high-pressure pump check; if you can explain the injection of the plunger is good, and then check out the oil valve is good; if the pressure relief valve and the tapered contact surface of the oil valve are good, that high-pressure pump No problem, fault in the fuel injector.
Check the injection quality of the injector. The fuel injectors are generally removed from the machine, and the pressure tester is used to check the injection pressure and injection quality, and after the failure is determined, the inspection is opened. The fuel injection time is incorrect and the machine does not work properly. Therefore, it should also check whether the injection time is accurate.
By understanding the detailed steps of the static detection method, everyone can effectively handle the fault and avoid blindly dismantling. It can also be regarded as indirect protection of the equipment. The Starlight will also introduce the dynamic detection method to everyone. Welcome to pay attention to relevant content. Copyright by:
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