High pressure fuel pump.
The high pressure fuel pump delivers high pressure fuel to the distribution line to ensure a continuous supply of fuel to the nozzle. The high pressure fuel pump works when the engine is started and the engine is running. If the engine is stopped and the ignition switch is still ON, the HFM-SFI control module turns off the power to the high pressure fuel pump to avoid accidental ignition.
Parts location: The high-pressure fuel pump is located at the bottom of the vehicle
Structure form: high pressure fuel pump by electric motor, pressure limiter, inspection valve, the electric motor actually works in the oil pump shell in the fuel, do not worry, because there is no ignition in the shell, fuel can lubritate and cool the fuel motor, the oil outlet is equipped with inspection valve, pressure limiter is located in the pressure side of the oil pump shell, with a channel leading to the oil inlet.
Product features: High pressure fuel pump is suitable for transporting diesel oil, heavy oil, residual oil, fuel oil and other media, especially suitable for road and bridge mixing station pump burner fuel pump, is the ideal product to replace imported products. High pressure fuel pump is not suitable for transporting highly volatile or low flash point liquids, such as ammonia, benzene, etc.
Car high pressure oil pump is broken what symptom can appear?
01 Power drop
Damage to the high pressure oil pump will cause power loss. When the throttle is loosened, especially at high speed, the vehicle will have obvious stall and engine vibration. This is because the oil supply pressure is insufficient, resulting in insufficient engine fuel injection, which causes a sudden drop in speed and cannot support the speed of the gearbox. In addition, the car will feel powerless when accelerating, and even if the speed is high, it is difficult to get enough push-back. These symptoms are due to fuel supply problems caused by damage to the high-pressure oil pump, resulting in the engine not getting enough power.
02 Not easy to start when starting
The damage of the high pressure oil pump will lead to the difficulty of starting the engine. Specifically, when there is a problem with the high-pressure oil pump, the pressure of the fuel will be insufficient, making the engine start slowly or require multiple attempts to successfully ignite. In addition, damaged high-pressure oil pumps can also lead to blockage of the intake and outlet pipes, further exacerbating the problem of start-up difficulties. Therefore, if the vehicle starts slowly or requires multiple attempts to start, it is likely that the high pressure oil pump is faulty.
03 Abnormal Noise
When the high pressure oil pump of the car is damaged, an obvious symptom is the abnormal humming sound during the driving process. This buzz is usually caused by wear or damage to parts inside the oil pump, especially when driving at high speeds or accelerating. This abnormal noise not only affects the driving experience, but can also be a precursor to more serious problems, such as a complete failure of the oil pump or engine failure. Therefore, once you hear this abnormal sound, it is recommended to check and repair the high pressure oil pump as soon as possible.
04 Increased fuel consumption
Damage to high pressure oil pumps in automobiles can lead to increased fuel consumption. Specifically, when there is a problem with the high-pressure oil pump, it may not be able to efficiently deliver fuel to the engine, resulting in incomplete combustion of fuel inside the engine. This not only affects the performance of the vehicle, but also results in increased fuel consumption. For example, when driving in urban areas, the original $200 gas bill can support a longer driving range, but now it is quickly exhausted. Therefore, if an abnormal increase in vehicle fuel consumption is found, there may be a problem with the high-pressure oil pump.
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