EBD-EBL电子制动力分配及限制技术解析 electronic brake force distribution

EBD-EBL电子制动力分配及限制技术解析electronic brake force distribution

The theoretical basis and principle of EBD: during brake, rear axle sideslip is the main factor causing the vehicle not stable, by lots of experiments, the rear axle when braking if than the front axle is locked first sliping, may occur for the plant to prevent rear axle sideslip, locking the rear wheel and a dangerous side slip, the actual front and rear brake force distribution curve of automobile brake system (knife line) should always be in the ideal braking force distribution line (I curve) below, for plants to reduce the wheel to lose steering ability opportunity and improve the braking efficiency, knife line should be more close to the I curve is better, the EBD function can be achieved today, has a fixed proportion of the front and rear axle braking force the car has a bigger superiority. The EBD function is the balance function of slip ratio, by modifying the program of ECU in ABS system to achieve, ABS system does not need to install additional components, the ABS system is the wheel speed sensor is calculated based on the rear axle of slip rate and reducing vehicle speed exceeds the set range in the braking process, the EBD start function, the output pressure of the rear axle will change with the different loads,

such as shown in Figure 4 curve.

EBD的理论基础和原理:在汽车制动过程中，后轴侧滑是造成车辆不稳定的主要因素，经大量的试验，在制动时若后轴比前轴先抱死拖滑，就可能发生后轴侧滑，为厂防止后轮抱死而发生危险的侧滑，汽车制动系的实际前后制动力分配曲线(刀线)总应在理想制动力分配线(I曲线)下方，为厂减少前轮失去转向能力的机会和提高制动效率，刀线应越接近I曲线越好，EBD功能可以实现此日的，比前后桥制动器制动力具有固定的比例的汽车具有更大的优越性。EBD功能是滑移率平衡功能，是在ABS系统中通过修改ECU内部的程序来实现的，ABS系统中不需要安装额外的零部件，就是基于ABS系统的轮速传感器计算出后桥的滑移率和车辆减速度在制动过程中超过设定的范围，EBD开始起作用，后桥的输出压力会随着载荷的不同而变化，如图4曲线所示。

带EBD的车辆制动压力关系曲线

The working principle of the ABCO company EBL recently on the basis of ABS electronic brake force integration limit EBL (Elec-

Ironic Brake our force Litnilalio function and the EBD function is similar, in the process of brake to brake pressure wheel speed

and rear axle as input parameters, in order to slip steering axle and driving bridge rate difference reference value to adjust the brake pressure of the rear axle. EBL can replace the load sensing valve, and EBD doesn't really replace the load sensing valve, because the vehicle in the braking process of vehicle deceleration rate of 90% is less than 0 25g, while the traditional EBD function only in reducing vehicle began working speed is greater than 0 25g. The EBL function is provided with a pressure sensor, a vehicle in the braking process of ABS can monitor brake pressure of the rear axle, can make the EBL function in the lower pressure reducing vehicle to realize speed adjustment, reduce speed and minimum allows the vehicle to work at 0 LG, as shown in Figure 5, so almost all in the braking process in effect, EBL can, so the EBL function is a function of a more optimized.

EBL的工作原理ABCO公司日前在ABS基础上集成的电子制动力限制EBL (Elec-

ironic Brake force Litnilalio司功能与EBD功能相似，是在制动过程中以车轮速度和后桥的制动压力为输人参数，以转向桥和驭动桥的滑移率差值为参考值来调整后桥的制动压力。EBL可以替代感载阀，而EBD并不能真正地替代感载阀，因为车辆在制动过程中90%的车辆减速度小于0. 25g，