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Method for testing automobile CVT hydraulic system

A hydraulic system and test method technology, which is applied in the field of automobile CVT hydraulic system test, can solve the problems of time-consuming and laborious, troublesome test bench construction, poor accuracy, poor stability, etc., and achieve accurate test data, low test cost and simple structure Effect

Inactive Publication Date: 2014-05-07
HUAIYIN INSTITUTE OF TECHNOLOGY
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Problems solved by technology

Regardless of the method, the construction of the test bench is more troublesome, time-consuming and laborious, and the stability of the test is poor.
[0003] If the automotive CVT hydraulic system is carried out on the original system, the test conditions will not be controllable, and the accuracy and stability of the test will be poor; redesigning the hydraulic system test circuit will take time and effort to build the test bench

Method used

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  • Method for testing automobile CVT hydraulic system
  • Method for testing automobile CVT hydraulic system
  • Method for testing automobile CVT hydraulic system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] Take the performance test of clamping force control subsystem and inverse proportional relief valve of automobile CVT hydraulic system as an example.

[0015] The schematic diagram of the hydraulic system before modification is as follows: figure 2 As shown, the automobile CVT hydraulic system is composed of clamping force control subsystem, speed ratio control subsystem, clutch control subsystem, cooling, lubrication and other subsystems, and the clamping force control subsystem and inverse proportional overflow valve are carried out on the original system. The performance test is affected by other systems, the test is not controllable, and the accuracy and stability of the test are poor.

[0016] According to the test needs figure 1 The distribution plate assembled on the original prototype shown in the figure is modified to close the hydraulic circuits other than the clamping force control subsystem, and the clamping force control subsystem and the distribution pla...

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Abstract

An automobile CVT hydraulic system is composed of a clamping force control subsystem, a speed ratio control subsystem, a clutch control subsystem, a cooling subsystem, a lubricating subsystem and the like. A hydraulic valve block is a carrier of various control valves and control oil ducts, and the subsystems are formed with the help of a flow distributing plate to achieve the functions of the subsystems. According to a method for testing the automobile CVT hydraulic system, the flow distributing plate is mainly used for changing the flow supply path of the automobile CVT hydraulic system, a special test system is formed to conduct performance tests on the related subsystems, a solenoid valve, a hydraulic control valve and the like, the flow supply path is firstly determined according to test needs, then the flow supply path is analyzed to design and manufacture the flow distributing plate for the test, finally, the flow distributing plate for the test is arranged in the hydraulic system, the performance tests can be conducted on the related subsystems, the solenoid valve and the hydraulic control valve, test data are accurate, the structure is simple, and test expenditure is low.

Description

technical field [0001] The invention relates to a hydraulic system test method, in particular to an automobile CVT hydraulic system test method. Background technique [0002] At present, some of the common hydraulic system test methods are to test on the basis of the original system, and some are to redesign the hydraulic system test circuit. Regardless of the method, the construction of the test bench is cumbersome, time-consuming and labor-intensive, and the stability of the test is poor. [0003] If the automotive CVT hydraulic system is carried out on the original system, the test conditions will not be controllable, and the accuracy and stability of the test will be poor; redesigning the hydraulic system test circuit will take time and effort to build the test bench. Contents of the invention [0004] The purpose of the invention is to propose a novel automobile CVT hydraulic system test method, which is simple and easy to implement. [0005] The purpose of the pres...

Claims

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Application Information

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IPC IPC(8): F15B19/00G01M17/007
Inventor 夏晶晶
Owner HUAIYIN INSTITUTE OF TECHNOLOGY
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