发电机组启动失败还可能是这三大故障造成的，这里就要对发电机启动失败的原因进行了详细分析，并提出了有效的解决措施，从而尽可能避免出现发电机启动失败的问题，以满足正常生产需求。下面来看看吧。

The failure of generator set startup may also be caused by these three major faults. Here, we need to analyze the causes of generator startup failure in detail, and put forward effective solutions, so as to avoid the problem of generator startup failure as far as possible, so as to meet the normal production needs. Let's have a look.

点火控制器故障

Ignition controller failure

机组的点火原理：点火控制器按照程序中设置好的点火顺序，依次将点火信号通过专用的低压线、点火线圈、高压线送至火花塞，实现各缸内的点火。

Ignition principle of the unit: according to the ignition sequence set in the program, the ignition controller sends the ignition signal to the spark plug through the special low-voltage wire, ignition coil and high-voltage wire in order to realize the ignition in each cylinder.

如果发电机启动速度达到了点火速度，但还是没有点火的爆破声音，应观察点火控制器的指示灯，通过点火控制器的指示灯状态来确认故障原因，如表1所示[3]。

If the starting speed of the generator reaches the ignition speed, but there is still no blasting sound of ignition, observe the indicator light of the ignition controller and confirm the cause of the fault through the indicator light state of the ignition controller, as shown in Table 1 [3].

若点火控制器出现故障，将点火控制器连接到PC电脑或手提编程器上，通过显示屏上提示的点火系统的故障情况，参考说明书对点火控制器进行调整。

If the ignition controller fails, connect the ignition controller to the PC or portable programmer, and adjust the ignition controller by referring to the instructions according to the fault condition of the ignition system prompted on the display screen.

火花塞、点火线圈及接线故障

Spark plug, ignition coil and wiring failure

当点火控制器指示灯显示正在点火，但用点火探照灯进行点火检查时发现，缸内未正常点火，这时需检查火花塞、点火线圈及接线状态。若使用塞尺检查火花塞间隙超过大运行间隙值时，则会出现点火失败现象。

When the indicator light of the ignition controller shows that the ignition is on, but it is found that the ignition in the cylinder is not normal when the ignition is checked with the ignition searchlight, then it is necessary to check the spark plug, ignition coil and wiring status. If the spark plug gap is greater than the large operating gap value by using a feeler gauge, ignition failure will occur.

另外，运行人员还需拆下火花塞，检查其端部的积碳情况。如果火花塞间隙过大，则将其调整到规定范围内;若火花塞端部积碳过多，则需有效清除积碳。运行人员检查点火线圈和接线时，主要检查点火线圈与高低压线、火花塞与点火线圈插接是否有松动或脱落现象，若有松动，及时对其进行紧固。

In addition, the operator also needs to remove the spark plug and check the carbon deposition at its end. If the spark plug gap is too large, adjust it to the specified range; If there is too much carbon deposit at the end of the spark plug, it is necessary to effectively remove the carbon deposit. When checking the ignition coil and wiring, the operator mainly checks whether the plug connection between the ignition coil and the high and low voltage wire, the spark plug and the ignition coil is loose or falling off. If it is loose, fasten it in time.

转速传感器故障

Speed sensor failure

控制器通过转速传感器测量燃气发电机组的实际速度，结合内部设定速度及空燃比的影响因素，调节控制阀节气门的开度，从而控制混合气的进气量，终实现速度控制。

The controller measures the actual speed of the gas generator set through the speed sensor, and adjusts the opening of the throttle valve of the control valve in combination with the internal set speed and the influencing factors of the air-fuel ratio, so as to control the intake volume of the mixture, and finally realize the speed control.

因此，转速传感器的转速采集尤为重要，当转速传感器发生故障时，会引起发电机启动失败。该转速传感器的电阻值应在200Ω左右，如果测试阻值不在此范围，则传感器发生故障的概率很大，需要更换传感器，同时还需检查传感器的接线以及插头，保证其连接紧固。

Therefore, the speed acquisition of the speed sensor is particularly important. When the speed sensor fails, the generator will fail to start. The resistance value of the speed sensor should be about 200 Ω. If the test resistance value is not within this range, the sensor has a high probability of failure. It is necessary to replace the sensor. At the same time, it is also necessary to check the wiring and plug of the sensor to ensure that it is firmly connected.

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