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High-pressure common rail pipe

A high-pressure common rail and common rail tube technology, applied in the field of common rail tubes, can solve problems such as large rail pressure fluctuations, and achieve the effects of smooth motion, good effect, and reduced speed

Inactive Publication Date: 2022-01-14
DONGFENG COMML VEHICLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present application provides a high-pressure common rail pipe to solve the problem of large rail pressure fluctuations in the related art

Method used

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Embodiment Construction

[0037] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present application.

[0038] The embodiment of the present application provides a high-pressure common rail pipe, which can solve the problem of large rail pressure fluctuations in the related art.

[0039] see figure 1 , figure 2 and image 3 As shown, a high-pressure common rail pipe provided by the embodiment of the present application includes a comm...

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Abstract

The invention relates to a high-pressure common rail pipe which comprises a common rail pipe body, wherein a plurality of through cavities arranged side by side are formed in the common rail pipe body; a first medium pressure buffering sleeve is arranged in one through cavity, the inner wall of the first medium pressure buffering sleeve is a curved surface, and a first medium storage cavity is formed by a space defined by the inner wall; a second medium pressure buffering sleeve is arranged in the other through cavity, the inner wall of the second medium pressure buffering sleeve is a curved surface, and a space defined by the inner wall forms a second medium storage cavity; and the common rail pipe body is provided with a first medium inlet joint and a first medium outlet joint which are communicated with the first medium storage cavity, and a second medium inlet joint and a second medium outlet joint which are communicated with the second medium storage cavity. The inner wall of the pressure buffering sleeve is formed by the curved surface; when a fuel medium moves in the pressure buffering sleeve, the flowing speed of the fuel medium is effectively reduced, the movement state of the fuel medium is smoother, sudden change of oil pressure can be reduced in the one-time injection process and the next-time injection process, and therefore, the effect of buffering pressure is achieved.

Description

technical field [0001] The present application relates to the technical field of common rail pipes, in particular to a high-pressure common rail pipe. Background technique [0002] Common Rail EFI technology refers to a fuel supply method that completely separates the generation of injection pressure from the injection process in a closed-loop system composed of a high-pressure oil pump, a pressure sensor and an electronic control unit (ECU). [0003] The high-pressure common rail system is mainly composed of three parts: the high-pressure oil pump, the common-rail pipe and the fuel injector. The high-pressure common-rail pipe is a hollow long tubular metal body. Its function is to store the high-pressure fuel provided by the high-pressure oil pump and suppress pressure fluctuations. , and provide high-pressure fuel with stable pressure to the injector. [0004] In the related art, the interior of the high-pressure common rail pipe adopts a through-hole structure, and this ...

Claims

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Application Information

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IPC IPC(8): F02M21/02F02M55/02
CPCF02M21/0245F02M21/0218F02M21/0221F02M21/023F02M55/025Y02T10/30
Inventor 汪祥本程伟殷勇安涛林浩严波李建峰樊有林
Owner DONGFENG COMML VEHICLE CO LTD