Diesel Engine Troubleshooting and EFI System Principles

What does the MDEC fault code of a diesel generator represent?

Input real-time detected parameters into the computer simultaneously, compare them with stored set parameter values or parameter maps, process and calculate, and send instructions to the actuator according to the optimal value or the calculated target value.

The actuator controls the fuel injection quantity and injection timing according to ECU instructions, and simultaneously controls the exhaust gas recirculation valve, glow plug and other executive mechanisms to make the diesel engine run in the best state.

The diesel engine with electronic injection cannot increase the speed, which actually means the accelerator cannot be increased. Common causes and treatment suggestions:

1.Air in the diesel pipeline: if checked and confirmed, perform the operation of bleeding air from the oil circuit;

2.Oil circuit blockage, poor oil supply: if checked and confirmed, perform replacement or maintenance operations;

3.Dirty diesel filter: if checked and confirmed, perform replacement or cleaning treatment;

4.Too low rail pressure due to pressure relief of the common rail pressure limiting valve of the diesel engine: if checked and confirmed, perform replacement or maintenance operations;

5.Severe wear of the plunger pair of the fuel unit pump: if checked and confirmed, perform replacement or maintenance operations;

6.Failure of the diesel engine controller (ECU): if checked and confirmed, perform replacement or maintenance treatment;

7.For those with turbocharging device, the turbocharger impeller is damaged: if checked and confirmed, perform replacement or maintenance operations.

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 [email protected].