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General Steps for Genset Electric Control Engine Fault Diagnosis

Aug. 18, 2021

In the actual operation of the engine of the generator set, as the mileage of the car increases, its technical condition will inevitably undergo certain changes. Then, which changes are normal changes? Which changes are fault phenomena? This is the first problem to be solved for correct car fault diagnosis. Among electronic control engine failures, some failures are more obvious, while some are not obvious. For faults with obvious phenomena, it is generally not necessary to conduct special tests or tests to determine that the engine is faulty, for example, the engine cannot run, the car is weak, and other fault phenomena. And for some other faults. The failure phenomenon is not obvious, and it can only be determined through a special test base or test method, such as large fuel consumption, excessive exhaust pollution, etc.


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When there is a fault in the electronic control engine of the generator set, first observe the status of the self-diagnostic fault indicator of the engine electronic control system. If this light is on during the engine operation, it means that the electronic control engine has a fault that the self-diagnostic system can detect. The fault is generally related to the electronic control system. At this time, the fault code stored in the computer can be retrieved by a certain method, and the cause of the fault can be found according to the fault code.


If the generator set engine does have a fault, and the engine fault indicator on the instrument panel does not light up when the engine is running, it means that the engine fault is a fault that the electronic control unit self-diagnostic system cannot identify. At this time, it should be the same as the traditional engine. For the failure phenomenon, make a preliminary diagnosis result, analyze the possible causes of the failure, and conduct an in-depth diagnosis according to the principle of from the outside to the inside and from simple to complex. Remember that in this case, you can't dismantle the electronic control system at will.


In order to reduce the workload of troubleshooting, try to avoid self-defeating, and avoid complicating the problem, inspection, analysis, and judgment should be carried out in a procedure that is simple and complicated, from the outside to the inside, and from the easy to the difficult. To this end, you should first check whether the wire plugs are loose, poorly contacted, open, or short-circuited, and then observe whether there are air leaks or oil leaks in the air intake pipes, vacuum pipes, and oil circuits. These simple and easy inspections After confirming that it is correct, proceed to the next step of inspection.


In order to reduce the workload of troubleshooting, when the generator set engine reacts abnormally, you can reduce the target by 1/2 to reduce the suspected object within the range of 1/2. For this reason, first confirm whether it is the oil circuit or the circuit. Part is faulty. Most of the engine failures are caused by the failure of the oil circuit or the circuit part. Therefore, when the engine fails, if you can be very sure that it is the oil circuit or the circuit part failure, you can reduce 1/ in one fell swoop. When working in 2, focus on the 1/2 range.


Starlight Power was founded in 1974 and is one of the earliest manufacturers of generators and diesel generator sets in China. If you want get more information, please feel free to send email to sales@dieselgeneratortech.com we will pay highly attention on your question.

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