What is the function of the low-pressure fuel pump?
1 Answers
As the most fundamental component in the engine's fuel supply system, the fuel pump is responsible for extracting fuel from the fuel tank during engine operation and continuously delivering it to the engine at a certain pressure through the fuel supply line. The fuel is then further pressurized by the high-pressure fuel pump and supplied to each cylinder in accordance with the engine's working sequence. The following are relevant details: 1. Power source: Although vehicle electrification has become an irreversible trend, the primary power source for cars currently still relies on traditional internal combustion engines. For fuel engines, general attention is usually focused on mechanical components such as pistons and cylinders, as well as electronic control units like ignition and valve timing, with little awareness of the fuel supply system, especially the fuel pump at the front end of the fuel supply system. 2. Working principle: Currently, most vehicles use vane-type electric fuel pumps. Vane-type electric fuel pumps offer advantages such as high fuel delivery capacity, high fuel pressure, stability, low noise, and long service life. This type of fuel pump primarily relies on an electric motor to drive the rotation of turbine blades, utilizing centrifugal force to draw fuel in through the intake port and expel it through the outlet port.
