A Universal Tooling for Solenoid Valve Performance Test

Abstract

The invention discloses a general tooling for electromagnetic valve performance testing, which comprises a power source module, a hydraulic pipeline module, a test object module and a data collection and processing module; the data collection and processing module is respectively connected with the power source module, the hydraulic pipeline module and the test object The modules are electrically connected; the power source module includes electro-hydraulic servo cylinders, motor modules and liquid storage bottles; the hydraulic pipeline module includes hydraulic pipelines, booster valves, pressure relief valves, steel cylinders and liquid recovery barrels; the data acquisition and processing module includes control Chip circuit module, data acquisition and display unit, control command issuing unit and power supply module. The universal tooling of the invention can produce stable and reliable hydraulic source output, has fast pressure response and high control precision; can realize consistent measurement of the performance of the same electromagnetic valve, has high testing efficiency and is convenient to operate. The general tooling is small in size, which can ensure that all brake fluids such as pipelines and liquid storage tanks are in the same temperature state during the performance test of high and low temperature solenoid valves, ensuring test accuracy.

Description

technical field [0001] The invention relates to the technical field of electromagnetic valve testing, in particular to a general tool for electromagnetic valve performance testing. Background technique [0002] With the rapid development of automobile electrification, the integrated electro-hydraulic braking system has a very important impact on the safety performance of automobile braking. The solenoid valve is an important part of the integrated electro-hydraulic braking system, and the performance of the solenoid valve has a great influence on the pressure control effect of the integrated electro-hydraulic braking system and the safety of automobile braking. Therefore, it is very important to study the performance of the solenoid valve. The factors affecting the performance of solenoid valve products mainly include the response time of the solenoid valve when it is powered on and off, the pressure regulation characteristics of the solenoid valve, the high-pressure tightn...

AI Technical Summary

Problems solved by technology

[0003] The existing solenoid valve performance test benches generally have the following disadvantages: First, the power source uses a gas-liquid booster pump, which draws air from the gas source through the booster pump, and then promotes the movement of the hydraulic cylinder piston. On the one hand, the gas source is unstable. , and the gas needs to be compressed to generate further thrust, so the response is slow and the precision is not high; in addition, the boosting accuracy of the booster pump is not high, which may easily lead to excessive or insufficient boosting

Second, due to the irregularity of the hydraulic pipeline, the stiffness characteristics of the brake wheel cylinder of the same product are different, the test pipeline is single, and the consistency test of the solenoid valve performance cannot be completed, and the test efficiency is low

Third, the volume of the test bench is large and requires an external gas source. During the high and low temperature test, it is impossible to ensure that all the brake fluid in the brake pipeline and the fluid storage tank are at the same temperature, resulting in cold air during the performance test of the solenoid valve. Mixing of hot brake fluid leads to changes in the viscosity of the brake fluid, which seriously affects the performance test results of the solenoid valve

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