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Device and method for reliability testing of fuel injector sealing ring

A testing device and testing method technology, applied in the direction of measuring device, testing of machine/structural components, testing of mechanical components, etc., can solve the problems of high testing cost, single environment, and low testing accuracy.

Active Publication Date: 2018-01-16
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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  • Device and method for reliability testing of fuel injector sealing ring
  • Device and method for reliability testing of fuel injector sealing ring
  • Device and method for reliability testing of fuel injector sealing ring

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 reliability testing device and method for a fuel injector sealing ring, which comprises a pair of pressure plates, a fuel injector simulation part provided with a shaft shoulder, and a sealing ring provided with a stepped mounting surface, a thrust surface and a mounting hole. The invention includes the steps of a cold and hot alternating test method and the steps of a high-temperature vibration durability test method. The cost-effective and simplified design of the present invention effectively simulates the high-temperature vibration and high-low temperature harsh environment in complex working conditions after the fuel injector and the sealing ring are installed on the engine valve chamber, and at the same time checks the test sample at a predetermined high temperature Work performance adaptability under vibration conditions and high and low temperature conditions.

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 Patents(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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