Although the valve is not a large part of the diesel generator set, it affects the major factors of the normal operation of the diesel generator set, and it is also the reason that hinders the power stability. The valve can ensure that the diesel generator can draw in more gas mixture gas or air during the intake period. If the valve fails, it will definitely affect the operation of the entire equipment, so we must learn how to eliminate the valve failure. Measurement method: The diesel generator set generally uses a threaded port type cylinder pressure gauge. When it is used, the threaded interface of the cylinder pressure gauge is screwed into the injector hole, and then the crankshaft is rotated by the starter for 4 to 6 seconds to make the diesel engine rotate. Keep it around 300r/min. The pressure value indicated by the cylinder pressure gauge at this time is the compression force of the cylinder under test. Write down the measured value, then add a small amount of oil to the cylinder and turn the diesel generator. If the measured pressure is obviously different from the normal, it means that the valve of the cylinder under test is faulty.
2. Exclusion of experience: To determine whether the valve is faulty, it must have 3 conditions: the diesel generator set has unstable speed during operation, the exhaust pipe has a sudden and sudden sound, and the exhaust smoke is abnormal (black smoke or blue smoke) . After the diesel generator set has these three conditions, the single-cylinder oil shut-off method is used to determine the failed cylinder. First, the high-pressure fuel pipes of the respective cylinders are disconnected, and the change of the working state of each cylinder before and after disconnecting the high-pressure fuel pipe is observed. If the black smoke at the rear of the high pressure fuel line in a cylinder disappears or weakens, the cylinder has a fault. If the black smoke or blue smoke of the rear high-pressure fuel line of a certain cylinder is not disappeared, it means that the cylinder has no failure. If no faulty cylinders are found after disconnecting the high-pressure oil pump tubings, the common faults that are prone to occur in the diesel engine should be analyzed.
The above is an introduction to the user of the automatic diesel generator valve troubleshooting method, hoping to help users. If you have any questions when using a diesel generator set, you can consult with all China online technicians.
2. Exclusion of experience: To determine whether the valve is faulty, it must have 3 conditions: the diesel generator set has unstable speed during operation, the exhaust pipe has a sudden and sudden sound, and the exhaust smoke is abnormal (black smoke or blue smoke) . After the diesel generator set has these three conditions, the single-cylinder oil shut-off method is used to determine the failed cylinder. First, the high-pressure fuel pipes of the respective cylinders are disconnected, and the change of the working state of each cylinder before and after disconnecting the high-pressure fuel pipe is observed. If the black smoke at the rear of the high pressure fuel line in a cylinder disappears or weakens, the cylinder has a fault. If the black smoke or blue smoke of the rear high-pressure fuel line of a certain cylinder is not disappeared, it means that the cylinder has no failure. If no faulty cylinders are found after disconnecting the high-pressure oil pump tubings, the common faults that are prone to occur in the diesel engine should be analyzed.
The above is an introduction to the user of the automatic diesel generator valve troubleshooting method, hoping to help users. If you have any questions when using a diesel generator set, you can consult with all China online technicians.
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