Brake disc warm-up braking method

Abstract

The invention relates to a braking disc preheated type braking method, and belongs to the technical field of vehicle braking controlling. The braking disc preheated type braking method aims that whena vehicle is in a high speed driving, the braking disc is preheated in advance, a braking chattering phenomena is eliminated, the vehicle braking property is improved, and the time and the distance ofemergency braking are increased through initiative braking. According to the braking disc preheated type braking method, a vehicle ECU, an electronic accelerator controlling system, a vehicle wheel speed-measuring system, and a braking system are included. The vehicle ECU collects the current vehicle speed through the vehicle wheel speed-measuring system and determines the oil feeding state of anaccelerator pedal through the electronic accelerator system. The braking disc preheated type braking method is characterized in that the vehicle ECU is provided with a braking vehicle speed preset value; when the current vehicle speed is greater than or is equal to the braking vehicle speed preset value, the vehicle ECU is triggered to time and the packing up time of the accelerator pedal is collected; and if in the timing period, the accelerator pedal is packed up for more than one time, only when the accelerator pedal is packed up for the first time, the vehicle ECU controls the braking system to conduct initiative braking, and the braking disc is preheated.

Description

technical field [0001] The invention relates to a brake disc preheating braking method, which belongs to the technical field of automobile braking control. Background technique [0002] When the car is running at high speed, most of them have the problem of brake vibration, which makes the vehicle difficult to control. The reason for this phenomenon is that when the car brakes suddenly at high speed, the heat generated by the brake disc is uneven. Due to the material of the brake disc and the heat transfer efficiency, a hot spot is generated at the position where the brake disc first contacts the brake pad, which is higher than other positions. , as the brake continues, the temperature of the brake disc increases, and the temperature of this point also increases. The temperature of this point is always higher than other positions, and a bulge will be formed on the brake disc, causing high-speed brake vibration. Brake vibration reduces the efficiency of the brake disc, early...

AI Technical Summary

Problems solved by technology

[0002] When the car is running at high speed, most of them have the problem of brake vibration, which makes the vehicle difficult to control

The reason for this phenomenon is that when the car brakes suddenly at high speed, the heat generated by the brake disc is uneven. Due to the material of the brake disc and the heat transfer efficiency, a hot spot is generated at the position where the brake disc first contacts the brake pad, which is higher than other positions. , as the brake continues, the temperature of the brake disc increases, and the temperature of this point also increases. The temperature of this point is always higher than other positions, and a bulge will be formed on the brake disc, causing high-speed brake vibration.

Brake vibration reduces the performance of the brake disc, early deformation of the brake disc, and shortens the life of the brake disc. At the same time, the brake vibration can easily cause the driver to panic, affect the driver's judgment, and easily cause accidents

[0003] In addition, when the car is running at high speed, most of the rear-end collision accidents are caused by inaccurate judgment. When the driver judges the road conditions, he first puts away the accelerator, and then decides whether to brake or accelerate after judging the result. Problems often occur in the judgment process , causing an accident

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