焦化发电机组怠速运转时，转速忽快忽慢不稳定。在检查点火系统没有故障的情况下，故障可能发生在燃料供给系统、怠速步进电机失控，此时应检查焦化装置及电机。

During the idling operation of the coking generator set, the rotating speed is unstable. If there is no fault in the ignition system, the fault may occur in the fuel supply system and the idle stepper motor out of control. At this time, check the coking device and motor.

一：

I:

1)进气道是否有漏气现象。

1) Check whether there is air leakage in the air inlet.

2)混合器空燃比调整是否合适。

2) Whether the mixer air-fuel ratio is adjusted properly.

3)混合器阀芯有否卡滞现象。

3) Check whether the mixer valve core is stuck.

4)混合器膜片是否破损漏气，造成有高速无低速现象。

4) Check whether the mixer diaphragm is damaged and air leaks, causing high-speed and low-speed phenomena.

二：

II:

a、怠速开关不闭合；

a. Idle switch is not closed;

b、怠速控制阀调整不当；

b. Improper adjustment of idle speed control valve;

c、进气及真空系统有漏气现象；

c. Air leakage in the air inlet and vacuum system;

d、配气相位错误；

d. Valve timing error;

e、喷油器滴漏或堵塞而工作不良；

e. Poor operation due to dripping or blockage of fuel injector;

f、排气系统堵塞；

f. The exhaust system is blocked;

g、怠速调节阀有故障或积炭等；

g. Idle speed regulating valve has fault or carbon deposit;

h、点火电路有故障(有火花塞损坏、烧蚀开裂，高压线漏电，分电器破损，点火线圈工作不良等),活性碳罐堵塞或电磁阀损坏；

h. The ignition circuit is faulty (there are spark plug damage, ablation cracking, high-voltage wire leakage, distributor damage, poor operation of ignition coil, etc.), the activated carbon tank is blocked or the solenoid valve is damaged;

i、曲轴通风阀(PCV)有故障或堵塞；

i. Crankshaft ventilation valve (PCV) is faulty or blocked;

j、怠速混合空然不当；

j. Improper idling mixing;

k、气门漏气；

k. Valve leakage;

l、各缸气缸压力相差过大；

l. The cylinder pressure difference of each cylinder is too large;

m、点火正时失准；

m. Ignition timing misalignment;

n、电控方面原因：

n. Reasons for electronic control:

(1)、节气门积炭有脏物或怠速控制阀有故障(堵塞)；

(1) There is dirt on the throttle valve or the idle control valve is faulty (blocked);

(2)、传感器线路或连接器有故障造成喷油器错误调节，这此传感器主要有氧传感器(导热不良、电源接触不良、头部有积炭)，进气温度传感器、进气歧管压力传感器(胶管堵塞、挤扁或漏气)、节气门位置传感器；

(2) . faulty sensor circuit or connector causes incorrect adjustment of fuel injector. This sensor mainly includes oxygen sensor (poor heat conduction, poor power contact, carbon deposit on the head), intake air temperature sensor, intake manifold pressure sensor (rubber tube blocked, squashed or leaking), throttle position sensor;

(3)、ECU有故障(如内部线路接触不良,腐蚀,氧化等)；

(3) ECU has fault (such as poor internal circuit contact, corrosion, oxidation, etc.);

(4)、插头装错(比如把进气温度传感器和怠速控制阀导线连接器插反)；

(4) The plug is installed incorrectly (for example, the wire connectors of the intake air temperature sensor and the idle control valve are inserted reversely);

当前焦化发电机组市场鱼龙混杂，市面上甚至存在很多不正规的家庭小作坊，因此采购焦化发电机组去的生产厂家咨询，包括产品配置和价格，售后服务项目等。关注我们//www.gz-yanye.com，了解更多注意事项！

At present, the market of coking generating units is mixed, and there are even many informal small family workshops in the market. Therefore, the purchase of coking generating units should go to professional manufacturers for consultation, including product configuration, price and after-sales service items. Follow us //www.gz-yanye.com Yes, learn more!