关键词: 商用车；主观感受；制动强度；制动力分配；制动减速度

Abstract: In order to improve the braking performance and comfort of commercial vehicles and meet the braking needs under harsh working conditions, the ground adhesion coefficient of special working conditions is analyzed. Through theoretical calculation, different sizes of brake chambers and brakes are matched to obtain the optimal braking strength curve. Combined with the optimization of the output curve of the dual chamber brake master valve, the expected braking effect of the driver is achieved; By optimizing the brake chamber and output curve, and combining experimental verification and multi sample verification under market conditions; The results show that the optimized braking system has increased driver satisfaction by more than 50%.

Key words: Commercial vehicles; Subjective perception; Braking strength; Braking force distribution; Braking deceleration