Automatic fuel emptying device

Abstract

An automatic fuel emptying device includes a casing, a mounting bracket, a water collection cup, a filter element assembly, an electric fuel delivery pump assembly and at least one one-way valve assembly. The housing, the mounting bracket and the water collection cup collectively define a chamber. The mounting bracket is provided with an oil inlet of the emptying device, and the water collecting cup is provided with an oil outlet of the emptying device and a heating device. The filter element assembly is arranged in the chamber and has an inner cavity. The upper part of the electric fuel pump assembly is inserted into the inner cavity of the filter element assembly, and the lower end extends into the inner cavity of the water collecting cup. The electric fuel delivery pump assembly includes the electric fuel delivery pump and an electrical connector; the electrical connector is provided with fuel passages and bypass holes with the same number as the one-way valve assembly. The oil inlet of the fuel passage is communicated with the oil outlet of the electric fuel delivery pump, and the oil outlet is communicated with the oil outlet of the emptying device. At least one one-way valve assembly is arranged in at least one bypass hole in a one-to-one correspondence. The invention has a compact structure, is easy to process and manufacture, and has a good heating effect on the fuel oil in the water collecting cup.

Description

technical field [0001] The invention relates to a fuel automatic emptying device. Background technique [0002] When the automobile fuel engine is started at low temperature and low speed, the low-pressure oil circuit often cannot automatically empty the air in the oil circuit, which causes the fuel engine to start unstable, difficult to start, or even unable to start, which affects the use of customers experience. Therefore, it is usually necessary to increase the automatic emptying device of automatic emptying and fast oil supply on the fuel engine. [0003] The existing automatic fuel emptying device includes a filter element assembly, a filter element assembly base, an electric fuel delivery pump assembly, a one-way valve assembly, and a water collection cup. On the base, it not only takes up a lot of space, but also needs to process the electric fuel pump assembly cavity, check valve assembly cavity, fuel discharge channel, bypass oil circuit, etc. on the filter eleme...

AI Technical Summary

Problems solved by technology

[0003] The existing automatic fuel emptying device includes a filter element assembly, a filter element assembly base, an electric fuel delivery pump assembly, a one-way valve assembly, and a water collection cup. On the base, it not only takes up a lot of space, but also needs to process the electric fuel pump assembly cavity, check valve assembly cavity, fuel discharge channel, bypass oil circuit, etc. on the filter element assembly base, and the processing cost is also high

In addition, the fuel does not necessarily pass through the heating area of ​​the water collection cup, and there is a possibility that part of the fuel is not heated, resulting in uneven heating, and the heated fuel is far away from the fuel discharge channel, and the fuel discharge channel is directly exposed to the external low temperature environment , the heat is directly lost to the external environment, there is a significant temperature drop, it is difficult to ensure the heating effect and the overall heating efficiency is low

[0004] In addition, the filter element assembly of the automatic fuel emptying device currently on the market is mostly a canister-type spin-on filter element. When replacing the filter element, it can only be replaced as a whole, resulting in unnecessary waste of various parts and resulting in increased maintenance costs for users. , and the canister-type spin-on filter element is designed in one piece, which produces a lot of waste, low resource utilization efficiency, and large environmental pollution

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