Where is the high-pressure fuel pump located in the Highlander?
1 Answers
The high-pressure fuel pump in the Highlander is located inside the fuel tank, which is positioned beneath the rear seats or trunk of the vehicle. The high-pressure fuel pump converts low-pressure fuel into high-pressure fuel. It compresses the fuel in the low-pressure fuel line, transforming it into high-pressure fuel, which is then delivered to the common rail via the high-pressure fuel line. The high-pressure fuel pump consists of a pump chamber, pump body, pump piston, outlet valve, and inlet/outlet valves. The function of the fuel pump is to draw gasoline from the vehicle's fuel tank. Thanks to the fuel pump, the gasoline tank can be placed at the rear of the vehicle, away from the engine, and at a lower position than the engine. Working principle of the fuel pump: Currently, in most vehicle models, the high-pressure fuel pump is installed inside the fuel tank and is powered electrically. The high-pressure fuel pump comprises three main components: the pump housing, permanent magnet motor, and outer casing. When the permanent magnet motor is energized, it drives the pump housing to rotate, drawing fuel through the inlet, passing it through the internal structure of the electric high-pressure fuel pump, and then pushing it out through the outlet to supply the fuel system.