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Fuel injector sealing ring reliability testing device and method

A test device and fuel injector technology, which is applied in the direction of measuring device, machine/structural component test, mechanical component test, etc., can solve the problems of single environment, low test accuracy and high test cost

Active Publication Date: 2015-12-09
DONGFENG AUTOMOBILE COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing test devices all use the actual fuel injector and sealing ring for testing, and most of the testing methods are manual or the testing environment is single. Not only the testing cost is high, but also the testing accuracy is not very high.

Method used

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  • Fuel injector sealing ring reliability testing device and method
  • Fuel injector sealing ring reliability testing device and method
  • Fuel injector sealing ring reliability testing device and method

Examples

Experimental program
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Effect test

Embodiment

[0013] Embodiment: A reliability test device for a fuel injector sealing ring according to the present invention, comprising a pair of pressure plates 32, a fuel injector simulation part 2 provided with a shaft shoulder 21, and a stepped mounting surface 33, a thrust surface 35 and a mounting hole 36 seal ring 3, characterized in that: the fuel injector simulation part 2 is located in the installation hole 36, one end of the pressure plate 32 is fixed on the stepped installation surface 33 by the pressure plate bolt 31, and the other end of the pressure plate 32 is connected to the The upper end surface of the shaft shoulder 21 is attached, the thrust surface 35 is attached to the lower end surface of the shaft shoulder 21, and a single-sided vulcanized rubber layer 37 is provided between the other end of the pressure plate 32 and the upper end surface of the shaft shoulder 21. The inner wall of the installation hole 36 is provided with a sealing ring 34 matching with the fuel ...

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PUM

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Abstract

The invention discloses a fuel injector sealing ring reliability testing device and a method. The fuel injector sealing ring reliability testing device comprises a pair of pressing plates, a fuel injector simulation piece provided with a shoulder, and a sealing ring provided with a step mounting face, a thrust surface and a mounting hole. The method of the invention comprises a step of cold-hot alternating test and a step of high-temperature vibration durability test. By using optimized and simplified design, high-temperature vibration and high low-temperature harsh environment conditions in complicated working conditions after the fuel injector and the sealing ring are arranged on an engine valve chamber can be effectively simulated, and the work performance adaptability of a test sample in predetermined high-temperature vibration and high low-temperature conditions can be checked.

Description

technical field [0001] The invention relates to the technical field of detection of a fuel injector sealing ring, in particular to a reliability testing device and method for a fuel injector sealing ring. Background technique [0002] The function of the sealing ring of the external fuel injector is to realize the sealing between the fuel injector and the cover of the valve chamber, and the sealing ring is firmly connected to the fuel injector through the pressure plate to form a whole with the fuel injector. The axial movement of the fuel injector is limited by the compression deformation of the vulcanized rubber layer on one side of the pressure plate, and the sealing ring inside the sealing ring is compressed and deformed, and is close to the axial surface of the fuel injector to achieve radial sealing. The fuel injector and its seal ring used under the complex working conditions of the engine need to evaluate the reliability of the seal ring to the fuel injector at the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00
Inventor 任芸余国强贺亚玲方劲松邱高上姚云伟李捷田浚廷刘少云李书伟肖汉平高昂代超群
Owner DONGFENG AUTOMOBILE COMPANY
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