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A dynamic test method for braking drag torque

A technology for drag torque and dynamic testing, applied in force/torque/work measuring instruments, measuring devices, torque measurement and other directions, it can solve problems such as discrepancies, not fully considering the real motion state of the real vehicle, and achieve accurate and effective measurement results. Effect

Active Publication Date: 2022-03-15
DONGFENG MOTOR CORP HUBEI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, the brake drag torque is tested by the method 5.3 in the QC / T592-2013 standard. Although this method can quickly measure the brake drag torque, it does not fully consider the real motion state of the real vehicle. There is a difference between the drag torque and the brake drag torque under the real running state of the vehicle

Method used

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  • A dynamic test method for braking drag torque
  • A dynamic test method for braking drag torque
  • A dynamic test method for braking drag torque

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] Such as figure 2 As shown, the experimental device of the brake drag torque adopted in the present invention includes a drive motor 1 for driving the brake disc 5 to rotate, a motor for applying pressure to the brake caliper 7, and a motor for making the friction block 6 of the brake caliper 7 move. The hydraulic oil tank 20 and the connecting rod 10 fixed with the brake caliper, the straight rod 14 and the load cell 15. The friction block 6 is in contact with the brake disc to generate a braking force. During this process, the hydraulic oil tank 20 drives the brake caliper 7, and the brake caliper 7 drives the connecting rod 10 to move. The brake rod 10 transmits the force to the straight rod 14 by The load cell 15 measures a specific value, and the braking torque can be obtained by multiplying the value of the load cell 15 ...

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Abstract

The invention discloses a method for dynamic testing of braking drag torque. The measuring device for measuring the braking torque between the brake caliper and the brake disc is connected, and the gap between the friction block and the brake disc is adjusted to meet the set value; the brake disc and the brake caliper are run-in and preheated; set The speed of the brake disc is customized, the hydraulic device pressurizes the brake caliper, and the friction block rubs against the brake disc. After the brake drag torque measurement conditions are met, the hydraulic device releases the pressure. After the pipeline oil pressure of the hydraulic device meets the conditions , the braking drag torque is measured by the measuring device. First run in and warm up the brake disc and the brake caliper, so that the matching state of the brake disc and the brake caliper is consistent with the actual vehicle state, so that the measurement of the braking drag torque is consistent with the actual vehicle state, and the measurement results are accurate and effective. .

Description

technical field [0001] The invention relates to the technical field of automobile braking performance testing methods, in particular to a dynamic testing method for braking drag torque. Background technique [0002] Energy conservation and environmental protection have become the theme of the automobile industry and the key to the healthy development of the world automobile industry. The braking system is an important safety component in the vehicle driving system. Its performance not only affects the safety, but also the friction torque between the brake caliper and the brake disc is also called the braking drag torque. Its size It has a certain impact on the driving resistance of the car, and then affects the fuel economy of the car. Therefore, under the background of energy conservation and environmental protection, various OEMs and braking system suppliers not only pay attention to the safety of automobile braking, but also pay attention to the development of brake cali...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L5/28G01L3/04
CPCG01L5/288G01L3/04
Inventor 乐智李迎浩杨芸芸汤泽波汤庆乾孟添
Owner DONGFENG MOTOR CORP HUBEI