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Method for assessing diesel actual abrasion resistance performance and bed test device

A bench test, diesel technology, applied in the direction of measuring device, engine test, machine/structural component test, etc., can solve problems such as large error and cumbersome procedures, and achieve the effect of low cost, good versatility and easy operation

Inactive Publication Date: 2008-07-23
REAR SERVICE TECH EQUIP INST NAVY PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of cumbersome procedures and large errors in the existing evaluation method for the actual anti-wear performance of diesel oil, the purpose of the present invention is to provide a new evaluation method for the actual anti-wear performance of diesel oil. This method is easy to operate, and the result is scientific and objective.

Method used

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  • Method for assessing diesel actual abrasion resistance performance and bed test device

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Experimental program
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Effect test

Embodiment 1

[0023] The -10# diesel oil from Shengli Oil Refinery was used, its sulfur content was 0.169%, and the lubricity value of diesel oil evaluated by HFRR was 521 μm. The above-mentioned test device and method conditions were used to conduct a 750-hour bench test, that is, the oil pump was driven by the motor at 570r / min, the governor was relatively fixed, the initial circulation oil was 701, and the ambient temperature was kept at 25±5°C during the test. See Table 1 for the fuel injection atomization of the oil pump before and after the test, Table 2 for the shape change of the needle valve couple, Table 3 for the mass loss of the couple, and Table 4 for the performance change of the couple.

[0024] Table 1 Oil pump spray atomization after bench test

[0025] Test items

[0026] Table 2 Morphology analysis of needle valve couple before and after bench test

[0027] serial number

[0028] Table 3 The mass and loss of each pair before and after the bench test...

Embodiment 2

[0035] (1) Test oil: Hydrogenated diesel oil from Shengli Oil Refinery, sulfur content 0.004%, HFRR corrected wear scar value 560μm

[0036] (2) After the test, the drop value of the sealing performance of the diameter of the plunger coupling (the drop value of the pressure-holding seconds) is 3.675 seconds, and its actual anti-wear performance is poor, which cannot meet the actual anti-wear requirements of the high-pressure injection system.

Embodiment 3

[0038] (1) Test oil: diesel oil from Maoming Oil Refinery, sulfur content 0.061%, HFRR corrected wear scar value 422μm

[0039] (2) After the test, the drop value of the sealing performance of the diameter of the plunger coupling (the drop value of the pressure holding seconds) is 0.55 seconds, and its actual anti-wear performance is good, which meets the actual anti-wear requirements of the high-pressure injection system.

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Abstract

The invention discloses a method for evaluating the real abrasion resistance of diesel, which comprises using a plunger injection pump to inject diesel via an injector into an oil tank, circulating the oil in the oil tank via the plunger injection pump and the injector, measuring the plunger mate part pressure keeping time of the plunger injection pump after some operation, using the difference of the plunger mate part pressure keeping times before and after operation to represent the real abrasion resistance of diesel. The invention further discloses a bench test device, which mainly comprises a plunger injection pump and an oil tank driven by a drive device, wherein the oil tank via a circulating oil line is connected with the oil inlet of the plunger injection pump, and the invention further comprises a timer for testing operation time. The invention method is simple and easy, which can represent real abrasion resistance of diesel.

Description

technical field [0001] The present invention relates to a method for evaluating the actual wear resistance of diesel oil and a bench test device. Background technique [0002] The fuel supply system of a diesel engine is an important part of the engine. If the fuel supply system does not work well, such as component wear, it will lead to insufficient fuel supply and poor fuel atomization, which will cause problems such as insufficient engine power, unstable idle speed, and incomplete combustion. It directly affects the power and economy of the engine. [0003] The performance of the fuel supply system is closely related to the anti-wear lubrication performance of diesel oil. Diesel oil has poor anti-wear and lubricating properties, which will lead to excessive wear of precision coupling parts in the oil supply system. The problem of engine oil supply system wear caused by insufficient lubricity of diesel oil has long attracted international attention. In the early 1990s, ...

Claims

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Application Information

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IPC IPC(8): G01N33/30G01M15/00
Inventor 胡泽祥高永建王昆
Owner REAR SERVICE TECH EQUIP INST NAVY PLA
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