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Method of testing self-changing gearbox oil pump assembly

A technology of automatic transmission and test method, which is applied in the direction of pump test, machine/engine, liquid variable displacement machinery, etc., to achieve the effect of improving performance and service life

Active Publication Date: 2008-06-11
WUHU WANLIYANG TRANSMISSION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no domestic manufacturer that systematically develops the automatic transmission oil pump assembly. Therefore, how to accurately test the basic characteristics of the oil pump during the development of the automatic transmission oil pump assembly is one of the current difficulties encountered by the industry.

Method used

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  • Method of testing self-changing gearbox oil pump assembly
  • Method of testing self-changing gearbox oil pump assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The test item carried out by adopting the present invention is the basic performance test of the oil pump assembly.

[0017] First, you must make preparations for the test. The specific instructions are as follows:

[0018] Test bench preparation, motor-driven unit operation test bench, including oil pump drive, matching tooling, output oil pressure regulating valve, oil pressure sensor, speed sensor, thermometer, torque meter, and hydraulic output device that can be closed-loop controlled.

[0019] The oil pump assembly uses a single running test bench.

[0020] The accuracy and operation of the above-mentioned equipment and measuring instruments need to be checked regularly.

[0021] Equipment performance: The maximum speed is 9000rpm, the maximum measurement pressure is 10.0MPa, the maximum flow rate is 120L / min, and the temperature range is -40~145℃.

[0022] Test oil pump preparation. Oil pump sampling: The oil pump sampling method should be tested immediately, ...

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Abstract

The invention relates to a testing method related to an oil pump assembly for an automatic gear box, which comprises the following steps: preparation stage on testing platform; set the preliminary working status; set oil temperature, rotation speed and oil pressure; check a singlechip to determine if all-round data collection is needed; if not, return to the said condition; if yes, collect data from all sensors; the singlechip processes all the sensing information in digital signal; the singlechip compares various temperature-flow rate curve, rotate speed-flow rate curve and pressure-flow rate curve with the theoretical ones, so as to test whether the deviation between the two is no more than 1 percent or not; the testing result can be output and the testing shall be finished if the parameters for all the oil pump have been qualified in the testing. Therefore, the invention verifies and improves the designed oil pump, as well as improves the performance and service life of automatic gear box and the hydraulic system.

Description

technical field [0001] The invention relates to a test method for an automatic transmission oil pump assembly. Background technique [0002] The transmission of each mechanical part of the automatic transmission is realized through the hydraulic control system, and the power source of the hydraulic control system is the oil pump. The performance of the oil pump is one of the main factors that determine the performance and life of the gearbox. At present, there is no domestic manufacturer that systematically develops the automatic transmission oil pump assembly. Therefore, how to accurately test the basic characteristics of the oil pump during the development of the automatic transmission oil pump assembly is one of the current difficulties encountered by the industry. Contents of the invention [0003] The purpose of the present invention is to provide a test method for an automatic transmission oil pump assembly. [0004] In order to achieve the purpose of the above inv...

Claims

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Application Information

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IPC IPC(8): F04B51/00
Inventor 张燕凤朱小龙蒲红江刘化雪莫春峰孟庆健楼信俊艾涛张延
Owner WUHU WANLIYANG TRANSMISSION CO LTD
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