汽车制动系统课件.pptVIP

When starting to move up the hill slope, the system prevents the vehicle from rolling backward in the interval while change the pedal operation from 制动踏板 to accelerator pedal During HAC operation, slip indicator blinks and stop light is lights up Active type speed sensor is used [HAC 作用条件] - Shift position is forward range - 制动踏板 is not depressed - 制动控制ECU detects reversing by speed sensor [HAC Canceled Conditions] - 制动控制ECU detects forward movement by speed sensor When the 制动控制ECU activates the VSC function, this function simultaneously effects the power steering cooperative controls Controls the EPS system and VGRS system in order to facilitate the driver to operate the steering in a direction that stabilizes the vehicle 主缸 压力传感器 x 2 轮缸 压力 x 4 主缸 切断电磁阀 x 2 压力 Appliance Valve (Linear Type) x 4 压力 Reduction Valve (Linear Type) x 4 Using Intelligent Tester II (Hand-held Tester) when bleeding the air in the 液压回路 DTCs for things such as a 制动控制 relay No.1 or No.2 malfunction and a 压力传感器 malfunction are stored after bleeding. Clear the DTCs when instructed during or after bleeding [常规运作] 主缸 切断电磁阀 is 关闭. 主缸 压力 is not transmitted to 轮缸. 主缸 压力 is used only for detection of the driver’s demand 增压阀 and 减压阀 are operated linearly to control 轮缸 压力 sensitively 压力 increase: 压力 Appliance Valve “打开”, 压力 Reduction Valve “关闭” 压力 hold: 压力 Appliance Valve “关闭”, 压力 Reduction Valve “关闭” 压力 reduction: 压力 Appliance Valve “关闭”, 压力 Reduction Valve “打开” 主缸 切断电磁阀 is 关闭. 主缸 压力 is not transmitted to 轮缸. 主缸 压力 is used only for detection of the driver’s demand 增压阀 and 减压阀 are operated linearly to control 轮缸 压力 sensitively [System OFF or Power Supply Failed] 主缸 压力 transmits to front 轮缸s Rear 轮缸 压力 is not generated 开关电磁阀 is “关闭” If 开关电磁阀 is 打开 during brake failure, the rise of front left 轮缸 压力 is delayed by the flow of 制动液 to brake simulator 制动系统 OFF = 开关电磁阀 “关闭” 参考 (制动控制系统) 液压管路 制动系统失效时开关电磁阀关闭 开关电磁阀 制动执行器 (不动作) 右前轮缸 关闭 打开 开关电磁阀 制动液流入制动行程模拟器 如果阀门打开 左前轮缸 系统关闭或失效 第二十九页，共四十三页。 制动控制系统 液压管路 前制动失效 制动执