The invention discloses an AVH hill-holding hydraulic control method and a vehicle. The method comprises the following steps that S1, brake energy loss is calculated according to temperature rise generated by friction between a brake disc and a friction plate; s2, outputting the braking force loss Floss in real time according to the calibration relation between the braking energy loss and the braking force loss; s3, according to the braking force loss, the braking pipeline hydraulic pressure P slope requirement needed by slope parking is calculated; and S4, the hydraulic pressure P pipeline of the brake pipeline is adjusted according to the hydraulic pressure P slope requirement of the brake pipeline required by slope holding, so that the hydraulic pressure P pipeline is equal to the hydraulic pressure P slope requirement, and then the pressure maintaining stage is started. According to the method, the slope signal alpha, the road adhesion coefficient mu, the vehicle load m and the influence of the high temperature generated by friction between the brake disc and the friction plate on the slope parking braking force are synthesized, the reasonable hydraulic pressure P slope requirement of the brake pipeline required by slope parking is calculated, and the current hydraulic pressure of the brake pipeline is adjusted; and the service life of the high-pressure valve body is prevented from being shortened due to overhigh pressure of a brake pipeline while the vehicle is prevented from sliding on a slope.
本发明公开了一种AVH驻坡液压控制方法及车辆,该方法包括以下步骤:S1、根据制动盘与摩擦片摩擦产生的温度升高计算制动能量损失;S2、根据制动能量损失与制动力损失的标定关系,实时输出制动力损失为Floss;S3、根据制动力损失计算驻坡所需的制动管路液压P坡需;S4、根据驻坡所需的制动管路液压P坡需调整制动管路液压P管路,使P管路=P坡需,然后进入保压阶段。本发明综合坡度信号α、路面附着系数μ、车辆载荷m以及制动盘与摩擦片摩擦产生的高温对驻坡制动力的影响,计算出合理的驻坡所需制动管路液压P坡需,并对当前制动管路液压进行调整,保证车辆不会溜坡的同时避免制动管路压力过高造成高压阀体的使用寿命缩短。
AVH hill-holding hydraulic control method and vehicle
AVH驻坡液压控制方法及车辆
2022-05-13
Patent
Elektronische Ressource
Chinesisch
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
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