沼气发电机组出现故障时，操作人员应沉着仔细及时地分析故障的特征，并判断其产生的原因。通常沼气发电机组出现这些问题要预防：

When the biogas generator unit fails, the operator shall analyze the characteristics of the failure carefully and timely, and judge the cause. In general, these problems of biogas generating units should be prevented:

1.启动困难出现该故障，先应检查混合器是否有沼气进入沼气发电机组，沼气供给系统是否有故障，检查混合气是否符合质和量的要求。然后检查所有缸线是否跳火，逐步检查点火系统、12V电源系统等是否工作正常，具体步骤如下：

1. It is difficult to start. In case of this fault, first check whether there is biogas entering the biogas generator set in the mixer, whether there is fault in the biogas supply system, and whether the mixed gas meets the quality and quantity requirements. Then check whether all cylinder lines are tripped, and gradually check whether the ignition system and 12V power supply system work normally. The specific steps are as follows:

1)检查沼气装置或电路是否有故障，ECU电源打开后，减压器电磁阀应有喀哒响声。

1) Check whether the biogas device or circuit is faulty. After the ECU power is turned on, the solenoid valve of the pressure reducer should have a clicking sound.

2)检查12V继电器是否良好。

2) Check whether the 12V relay is in good condition.

3)检查沼气管路是否畅通，阀门是否开启。

3) Check whether the biogas pipeline is unblocked and whether the valve is opened.

4)检查钢瓶是否有气。

4) Check whether there is air in the cylinder.

5)检查混合气浓度是否过浓或过稀，调整混合器上的怠速浓度调整螺钉，顺时针混合气加浓，反时针混合气变稀，或加或取一张混合器膜片铜垫片。加铜垫片混合气变稀,减铜垫片混合气变浓。

5) Check whether the mixture concentration is too rich or too thin, adjust the idle speed concentration adjusting screw on the mixer, increase the mixture concentration clockwise, and dilute the mixture anticlockwise, or add or take a copper gasket of the mixer diaphragm. The mixed gas with copper gasket becomes thinner and the mixed gas with copper gasket becomes thicker.

6)检查高压线跳火性能，检查高压线是否漏电。

6) Check the fire tripping performance of the high-voltage line and check whether the high-voltage line has leakage.

7)检查线束插接件是否可靠。

7) Check whether the harness connector is reliable.

8)检查曲轴转角信号传感器是否良好。

8) Check whether the crankshaft angle signal sensor is in good condition.

9)检查整车电源及电压变换器输出电压是否符合要求。

9) Check whether the output voltage of the vehicle power supply and voltage converter meets the requirements.

10)检查蓄电瓶电压是否过低、连接是否正常。

10) Check whether the battery voltage is too low and the connection is normal.

11)检查火花塞电间隙是否正常，有无积炭。

11) Check whether the electric gap of the spark plug is normal and whether there is carbon deposit.

12)检查空气滤清器是否良好，进气管路是否畅通。

12) Check whether the air filter is in good condition and whether the air inlet pipe is unblocked.

13)检查起动机是否工作正常。

13) Check whether the starter works normally.

14)检查ECU是否工作正常。

14) Check whether the ECU works normally.

当沼气发电机组运转中出现不正常现象时，可以用看、听、摸、嗅等方法综合判断哪一个部位或哪一个系统发生了故障。详情就来我们网站http://www.huannengpower.com咨询吧！

When abnormal phenomena occur in the operation of the biogas generator unit, it can be comprehensively judged which part or which system has failed by means of seeing, listening, touching and smelling. Please visit our website for details http://www.huannengpower.com Consult!