An electric fuel pump assembly

Abstract

The invention provides an electric fuel pump assembly, including a bottom barrel, an electric fuel pump, an oil level sensor, an oil outlet pipeline, and an oil return pipeline; the electric fuel pump is arranged in the bottom barrel; the bottom of the bottom barrel is provided with a one-way oil inlet valve; the oil outlet pipeline is connected to the oil outlet of the electric fuel pump; the top of the electric fuel pump assembly is provided with an upper cover that matches the fuel tank port, and the oil outlet of the oil outlet pipeline and the oil inlet of the oil return pipeline are set on the upper cover of the fuel tank port ;The oil return pipeline is connected with a pressure regulating valve; the oil level sensor is fixed on the inner shell of the bottom barrel; the upper cover of the fuel tank port is provided with a combined junction box, and the wiring of the oil level sensor and the electric fuel pump are connected to the combined junction box through connectors middle. The invention centrally arranges the pressure regulating valve and the oil level sensor, and also has the oil storage function, has a compact structure, is convenient for installation and maintenance, saves costs, and reduces the probability of fuel leakage.

Description

technical field [0001] The invention relates to an automobile fuel pump component, in particular to an electric fuel pump assembly. Background technique [0002] The prior art automobile electric fuel pump assembly has the following technical features: [0003] In terms of the installation method of the fuel pump assembly: the fuel pump assembly is fixed on the fuel tank port through a screw cap, connected with the fuel pump oil pipeline through a rubber tube, and then fixed by a clamp; or the fuel pump assembly is buckled by a flange plate On the cover of the fuel tank port, and then fixed by screws. These two methods all have the problems of slow installation speed and difficult maintenance, and also take up a large space. [0004] In the installation mode of the pressure regulating valve, the prior art is that the pressure valve is installed at the end of the fuel delivery pipe, close to the engine, and excess fuel is returned to the fuel tank through the oil return pip...

AI Technical Summary

Problems solved by technology

[0007] The present invention solves the problems in the prior art that the installation speed of the fuel pump assembly is slow and maintenance is difficult; the pressure regulating valve is close to the engine and has a short service life; the installation method of the oil level sensor is relatively complicated and easily causes oil leakage; To solve technical problems such as cavitation phenomenon, provide an electric fuel pump assembly with reasonable structure, convenient maintenance and more complete functions

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