The generator fuel pump is the "heart" of the engine's fuel supply system. It is a device that continuously draws fuel from the fuel tank and provides the fuel system with fuel at a specified pressure and flow rate. Based on the functions of the generator fuel pump, it can be known that the performance of the fuel pump will directly affect the working performance of the engine. Therefore, it is necessary to carry out corresponding preparatory work before using the fuel pump.
To ensure the normal use of the generator, debugging the fuel pump is the primary preparatory work. We must install and debug it on a dedicated test bench according to the fuel pump calibration data sheet. Currently, the flowmeter method is mostly used, and the specific steps are as follows:
Preparation before debugging
The fuel pump and injector have been debugged on the test bench. The generator is in good technical condition and has entered the hot - running state.
The fuel pump is correctly connected to the driving device, and clean fuel is injected into the gear pump.
Disconnect the throttle valve control rod from the connecting rod to enable free movement.
Install the tachometer on the connecting device of the fuel pump timer drive shaft.
Check whether the instruments used (such as pressure gauges and tachometers) are working properly.
Idle speed adjustment
Unscrew the plug from the cover of the PTG governor spring assembly. Adjust the idle speed of the generator to (600 ± 20) r/min by rotating the idle - speed adjustment screw. After the idle - speed adjustment, screw the plug back.
For the generator fuel pump equipped with an MVS governor, the idle - speed adjustment screw is located on the governor cover. After the idle - speed adjustment, tighten the lock nut to prevent air from entering.
High - speed adjustment
Usually, when the fuel pump debugged on the test bench is installed in the generator, high - speed adjustment is not required. If adjustment is needed, the method of increasing or decreasing the high - speed spring washers is still used.
The disconnection point speed of the generator governor should be 20 - 40 r/min higher than the rated speed to ensure that the governor does not play a limiting role before the rated speed.
The maximum no - load speed of the generator is generally 10% higher than the rated speed.
It is hoped that the above - shared content can help everyone debug and use the fuel pump more easily. Many users face difficulties in the later use, maintenance, and upkeep of the generator set due to insufficient in - depth understanding of the generator. Therefore, a professional enterprise is needed to provide technical support and guidance for later use and maintenance.
Dingbo Power was founded in 1974 and is one of the earliest manufacturers of generators and diesel generator sets in China. If you want get more information, please feel free to send email to sales@dieselgeneratortech.com we will pay highly attention on your question.
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