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Overheat protection control method and system for vehicle brake-by-wire system and storage medium

An overheating protection, brake-by-wire technology, applied in braking safety systems, brakes, automatic starting devices, etc., can solve problems such as shortening the life of parts, failure of electric power assistance, and overheating of parts temperature rise, reducing output torque and power, Avoid overheating effects

Active Publication Date: 2021-06-04
DONGFENG MOTOR GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When encountering road congestion or waiting for traffic lights, if the driver still depresses the brake pedal to brake after parking, the electronic booster motor will work with high current for a long time, causing the internal temperature of the parts to overheat. In this case, no effective measures should be taken. Protection measures can easily cause the failure of the electric power booster, shorten the life of the parts, and cause brake safety accidents in serious cases

Method used

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  • Overheat protection control method and system for vehicle brake-by-wire system and storage medium
  • Overheat protection control method and system for vehicle brake-by-wire system and storage medium
  • Overheat protection control method and system for vehicle brake-by-wire system and storage medium

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Embodiment Construction

[0039] Reference will now be made in detail to specific embodiments of the invention, examples of which are illustrated in the accompanying drawings. While the invention will be described in conjunction with specific embodiments, it will be understood that it is not intended to limit the invention to the described embodiments. On the contrary, it is intended to cover alterations, modifications and equivalents as included within the spirit and scope of the invention as defined by the appended claims. It should be noted that the method steps described here can all be realized by any functional block or functional arrangement, and any functional block or functional arrangement can be realized as a physical entity or a logical entity, or a combination of both.

[0040] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embo...

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Abstract

The invention discloses a vehicle brake-by-wire system overheating protection control method and system and a storage medium. The method comprises the steps: obtaining the vehicle speed and pedal displacement information; when it is detected that the vehicle speed and the pedal displacement information meet the thermal protection starting condition, sending an overheating protection instruction to a vehicle brake-by-wire system; and according to the received overheating protection instruction, controlling an electronic parking actuator to conduct parking braking on the vehicle, and controlling an electronic booster to reduce the output torque. After braking force is applied through the electronic parking actuator, the output torque and power of the electronic booster can be greatly reduced, and braking failure caused by overheating of the electronic booster can be remarkably avoided.

Description

technical field [0001] The invention relates to the field of automobile braking, in particular to an overheat protection control method, system and storage medium of a vehicle brake-by-wire system. Background technique [0002] Electronic hydraulic brake-by-wire uses electronic booster instead of vacuum booster to establish hydraulically applied braking force in the master cylinder, and judges the driver's braking intention based on the pedal displacement collected by the pedal travel sensor. As the pedaling depth increases, the motor output power and torque increase, thereby creating greater brake hydraulic pressure. [0003] When encountering road congestion or waiting for traffic lights, if the driver still depresses the brake pedal to brake after parking, the electronic booster motor will work with high current for a long time, causing the internal temperature of the parts to overheat. In this case, no effective measures should be taken. Protection measures can easily l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T17/22B60T8/172B60T7/12
CPCB60T17/22B60T8/172B60T7/12
Inventor 徐小卫尹佳超王平陈世荣蔡静
Owner DONGFENG MOTOR GRP
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