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The Diesel Engine Speed of The Generator Set is Out of Control

Oct. 26, 2023

If our generator set diesel engine experiences a runaway situation, what is the reason and how should we solve it? Below, Dingbo Power Generation Equipment will provide a detailed introduction for users to refer to.

chinese diesel generator

The diesel engine loses control of speed, suddenly increases, exceeds the maximum rated speed, and makes a loud noise, commonly known as "flying car". The reasons for "flying" include: the fuel injection pump rack is stuck in the maximum fuel supply position. The governor loses its speed regulation function. The viscosity of the oil in the governor is too high or the oil level is too high. The plunger adjustment arm is detached.

When "speeding" occurs, the throttle should be quickly closed. If the fuel supply lever cannot return and the diesel engine reaches its maximum speed, it is often due to the throttle lever or throttle arm being stuck. After taking measures to turn off the diesel engine, the cause of the malfunction should be thoroughly checked and eliminated. If the diesel engine experiences "runaway", the throttle should be quickly closed. If the speed decreases or stalls, it indicates that the governor has lost its regulating effect. After the diesel engine stalls, the governor should be removed for detailed inspection. Firstly, check if there is too much oil, then check if the high and low speed springs are broken, if the flying hammer pin is detached, and if the pressure bearing is damaged. If necessary, the governor can be removed for repair and inspection.

Quickly close the throttle, and if the lever or adjusting gear lever is exposed, it can be directly pulled back by hand. A diesel engine with a pressure reducing valve can be quickly depressurized by pulling the valve handle. Brake at high speed to turn off the diesel engine. Remove the air filter and block the intake duct (do not block it with your hands to prevent burns).

Since 1982, Dingbo Generator has been a generator set manufacturer qualified by the "National Internal Combustion Engine Quality Supervision and Inspection Center". The product quality has passed the IS09001 quality system standard certification. And obtained the qualification certificate for self-operated import and export. Over the years, Dingbo units have been widely used in all walks of life, and have won the network access qualification of the Ministry of Information Industry, the network access qualification of the Ministry of Radio and Television, the network access qualification of CNPC, the network access qualification of China Mobile, and the manufacturing qualification of marine units. In 2016, Dingbo was awarded the Certificate of Qualified Supplier of China Nuclear Power Group. Dingbo Generator has been cooperating with Shangchai Power for many years. In 2009, it became the OEM partner of Shangchai Power in China. Dingbo generator VOLVO unit ranks the top three in the Asia-Pacific sales volume, and is the core OEM partner of Sweden Volvo in the Asia-Pacific region. If any question please feel free to visit our website https://www.dieselgeneratortech.com/ or send email to sales@dieselgeneratortech.com.

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