In order to fix the generator overspeeding issue, find the root cause by checking the governor malfunction, fuel system, and engine components. Some of the solutions include fixing governor linkages, adjusting governor settings, and making use of emergency shutdown systems. 

In this blog, let’s discuss the troubleshooting steps involved in reducing generator overspeeding and additional considerations to prevent overspeeding.

Table of contents 

  • Steps involved in reducing generator overspeeding 
  • Additional considerations to prevent overspeeding

Steps involved in reducing generator overspeeding 

Check the Governor 

The governor is responsible for controlling engine speed. Check for mechanical issues like broken linkages, governor spring problems, or any wear or tear in governor gears. 

Check fuel system 

A dirty or clogged carburetor causes engine surge and overspeeding. Make sure there is proper fuel delivery and pressure. 

Check engine performance 

Make use of diagnostic tools to find the engine speed and real-time fuel delivery. This will help in tracking irregularities that result in overspeeding. 

Examine mechanical components. 

Check for any damages in components like fuel injectors, turbochargers, and exhaust systems that impact engine speed and performance. 

Install an emergency shutdown system. 

An emergency shutdown automatically disconnects the fuel supply if the engine outperforms its safe operating speed. 

Check controller settings

If an electronic controller is installed in your commercial diesel generator, make sure all configuration parameters are in place.  

Additional considerations to prevent overspeeding

Additional considerations to prevent overspeeding in your commercial generator are:

Mechanical Overspeed Trips 

The mechanical overspeed trip systems will act as a brake to stop the pistons or turbines of the generator if the speed is very high. 

Electronic Governors 

If the generator has an electronic governor, you need expert guidance to troubleshoot and repair it. 

Expert consultation 

If you are not sure about the reason for the generator overspeeding or if you don’t know how to fix the issue, consult an expert technician. Fixing yourself without technical knowledge may damage the generator and result in financial loss. 

Mid America Engine provides indoor and outdoor generator sets, engine generator accessories, and generator services. Our technicians will understand your industrial requirements and provide suitable generators based on your climatic conditions, equipment used during outages, and your industrial space. We also provide services to fix generator overspeeding and other custom services upon request, contact our expert today.    

FAQs about How to fix commercial generator overspeeding

How to fix generator overspeeding?

To fix the generator overspeeding issue, check the malfunctioning of the governor, fuel system, and engine components.

How to control generator overspeeding?

Some of the steps to control generator overspeeding are to check the fuel system, check engine performance, check controller settings, and check governor settings.