Device for automatically emptying fuel oil in low-pressure oil circuit of diesel engine

A diesel engine, automatic emptying technology, applied in the direction of engine components, machines/engines, charging systems, etc., can solve the problems that the oil pressure cannot be established, and the diesel engine cannot be emptied when it starts at low speed, so as to meet the functional requirements and reduce the installation cost size, the effect of miniaturization

CN101936243BActive Publication Date: 2012-02-29ZHEJIANG KEBODA IND +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2012-02-29

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Abstract

The invention discloses a device for automatically emptying fuel oil in a low-pressure oil circuit of a diesel engine. The device comprises a filter and an electric fuel transfer pump. The device is characterized by also comprising a filter base and a check valve assembly, wherein the filter base comprises a base body and an installation part main body; an electric oil transfer pump accommodationcavity and a check valve accommodation cavity are formed on the installation part main body; and the electrical oil transfer pump and the check valve assembly are arranged in the electric oil transfer pump accommodation cavity and the check valve accommodation cavity respectively. The device also comprises an oil inlet pipe section, an oil outlet pipe section and a connecting part which are arranged on the installation part main body, wherein an inner oil outlet of the oil inlet pipe section is communicated with the inside of the filter; an inner oil inlet of the oil outlet pipe section is communicated with the check valve accommodation cavity and is communicated with the electrical oil transfer pump accommodation cavity by a connecting pipe; the connecting part is provided with a centraloil hole which is communicated with the electric oil transfer pump accommodation cavity and the check valve accommodation cavity; the bottom of the filter is connected with the connecting part; and the central oil hole is formed inside the filter. The device has the advantages of reasonable structure, simple use, convenient and simple installation and good emptying effect.
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Description

technical field

[0001] The invention relates to an automatic fuel emptying device for a low-pressure oil circuit of a diesel engine. Background technique

[0002] With the strengthening of the greenhouse effect and the enhancement of human environmental awareness, the world is paying more and more attention to the impact of vehicle exhaust emissions on the atmosphere and even the human living environment. Different countries have formulated different regulations on vehicle exhaust emissions according to their actual conditions. Since my country implemented the National III emission regulations in 2008, it has continuously improved the emission standards of automobile exhaust. At present, it is more popular and easy to promote in the world that the fuel high-pressure common rail system is used to increase the fuel injection pressure, so that the fuel can be fully atomized, so that it can be fully burned in the engine cylinder, and the emission of harmful substances in fuel ex...

Examples

Embodiment Construction

[0027] The present invention is further described below through embodiment.

[0028] see Figure 1 ~ Figure 4 . The invention relates to a diesel engine low-pressure oil circuit fuel automatic emptying device, which includes a filter 1 and an electric fuel delivery pump 2; The filter base 3 includes a seat body 31 and a mounting part main body 32 arranged on the seat body, and the installation part main body is provided with an electric oil pump accommodating cavity 321 and a one-way valve accommodating cavity 322 (please Cooperate with reference Figure 5 ), the electric oil delivery pump 2 and the one-way valve assembly 4 are respectively arranged in their respective accommodating chambers. Wherein, the inner end of the electric oil delivery pump 2 is covered with a first O-ring 21 , and the casing of the electric oil delivery pump 2 is covered with a first O-ring 22 . The mouth of the electric fuel pump accommodation chamber 321 is provided with an end cover 3211, which...