Fuel System New Diesel Fuel Injection Pump Head Rotor 146403-6820 VE Head Rotor for Auto Spare Parts

The diesel engine of a diesel locomotive uses two fuel pumps driven by electric motors. When the diesel engine is running, one of the fuel pumps is working and the other is in standby. Diesel is extracted from the fuel tank and input into the fuel pipe system at a certain pressure to supply the needs of the diesel engine operation. If the fuel pump is not working properly, it will lead to insufficient amount of diesel entering the cylinder, which can easily cause the supercharger to emit black smoke and eventually cause the diesel engine to shut down. The reasons why the fuel pump is not working properly include: the fuel pump coupling is loose, causing the fuel pump motor to be unable to drive the fuel pump.

work; the fuel primary filter is clogged, and fuel cannot enter the pipeline through the filter element; the check valve of the fuel pump fails, causing the diesel fuel drawn from the fuel tank to pass through the bypass diesel line and does not enter the fuel pipeline; the fuel delivery pipe is blocked or leaking, and the fuel diesel Debris in the tank blocking the diesel suction port will result in the inability to absorb diesel, and leakage in the diesel delivery pipe will result in insufficient diesel suction. From the fuel tank to the combustion chamber, diesel must pass through multiple components such as fuel pumps, fuel coarse and fine filters, high-pressure fuel pumps, fuel injectors, and fuel pipelines. If there is a loose joint in one of the pipelines or there is a problem in the pipeline, In the case of minor cracks, air may be sucked into the fuel pipeline from loose or cracked locations when diesel is being transported under pressure in the pipeline.