Diesel Pump BH4QT95R9 for Car Spare Parts

The function of the automobile fuel pump is to suck gasoline out of the fuel tank, and press it into the float chamber of the carburetor through the pipeline and the gasoline filter, so that the automobile engine has the power to start, thereby starting the vehicle. It is thanks to the diesel pump that the gasoline tank can be placed at the rear of the car away from the engine and below the engine. Electric diesel pumps can be divided into the following three types.

The roller electric diesel pump consists of a shell, a cylindrical roller and a rotor. The five rollers can slide radially in the groove of the rotor, and there is a certain eccentricity between the rotor and the housing. The rotor rotates under the drive of the DC motor, and under the action of centrifugal force, the rollers are pressed against the inner surface of the pump body to form five relatively independent sealing chambers. When rotating, the volume of each sealing cavity changes continuously, and when it is in the oil inlet, the volume increases to form a certain vacuum, and the filtered gasoline is sucked into the pump. At the oil outlet, the volume becomes smaller, the pressure rises, and the gasoline passes through the DC motor and pushes the check valve to be output. When the oil pipeline is blocked or the gasoline filter is blocked, the gasoline pressure exceeds the specified value, the pressure limiting valve opens, and the gasoline flows back to the oil inlet side.

Vane diesel pump: The vane pump is a pump in which the vanes in the rotor slot are in contact with the pump casing, and the sucked liquid is pressed from the oil inlet side to the oil discharge side. Gear diesel pump: The gear pump is a kind of positive displacement pump. It consists of two closed spaces consisting of two gears, the pump body and the front and rear covers. When the gears rotate, the volume of the space on the side where the gears are disengaged increases from small to large, forming a vacuum. When the liquid is sucked in, the volume of the space on the meshing side of the gear changes from large to small, and the liquid is squeezed into the pipeline. The suction chamber and the discharge chamber are separated by the meshing line of two gears.