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为了考察在各种附着系数的路面上,电涡流缓速器处于不同档位对汽车制动性能的影响,分析了理想的汽车前、后车轮制动力分配曲线与前、后制动器制动力分配曲线之间的匹配关系。引入了能够反映制动性能的制动力利用率概念,根据不同的匹配关系,推导出了对应的制动力利用率算法。针对某轻型客车,采用数值分析方法分析了当缓速器处于各档位时制动力利用率与路面附着系数的关系。研究结果表明:当缓速器工作时,随着路面附着系数的增加,制动力利用率呈现先增后减的趋势;当缓速器工作在低档时,路面附着系数在0.06～0.81内,制动力利用率都在90%以上,随着缓速器档位的增加,制动力利用率呈现下降趋势,应尽量避免缓速器长时间工作于最高档。
In order to investigate the influence of the eddy current retarder on the braking performance of the vehicle on different road surfaces with various adhesion coefficients, the ideal braking force distribution curve of the front and rear wheels and the braking force distribution curve of the front and rear brakes are analyzed The match between. The concept of braking force utilization, which can reflect the braking performance, is introduced. According to the different matching relations, the corresponding braking force utilization algorithm is deduced. Aiming at a light bus, the relationship between braking force utilization ratio and road adhesion coefficient when the retarder is in each gear is analyzed by numerical analysis method. The results show that when the retarder is working, the braking force utilization rate increases firstly and then decreases with the increase of the road surface adhesion coefficient. When the retarder operates in the low range, the road surface adhesion coefficient is within the range of 0.06-0.81 Power utilization rates are above 90%, with the retarder stalls increased, the brake force utilization showed a downward trend, should try to avoid the retarder long time working in the most upscale.