Where is the car fuel pump installed?
1 Answers
Fuel pumps are divided into gasoline pumps and oil pumps. The gasoline pump is installed inside the fuel tank, while the oil pump is installed inside the engine. The function of the gasoline pump is to draw gasoline from the fuel tank and deliver it through pipelines and fuel filters to the float chamber of the carburetor. It is precisely because of the gasoline pump that the fuel tank can be placed at the rear of the car, far from the engine, and below the engine. The working principle of the gasoline pump is as follows: 1. Currently, in most vehicle models, the fuel pump is installed inside the car's fuel tank and is electrically driven. The fuel pump consists of three parts: the pump body, the permanent magnet motor, and the housing. When the permanent magnet motor is powered, it drives the pump body to rotate, sucking fuel from the inlet, passing it through the internal structure of the electric fuel pump, and then pressing it out from the outlet to supply the fuel system. The fuel flowing through the electric fuel pump also cools the armature of the permanent magnet motor, hence it is also known as a wet fuel pump. 2. The motor part of the electric fuel pump includes a permanent magnet fixed on the housing, an armature that generates electromagnetic torque, and a brush device installed on the housing. The brushes are in contact with the commutator on the armature, and their leads are connected to the terminals on the housing, directing the voltage that controls the electric fuel pump to the armature windings. The ends of the electric fuel pump housing are crimped and riveted, assembling all components into a non-detachable unit.
