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摘要: 提出了装用缓行器后汽车前后制动力分配的广义I曲线概念, 导出了同步附着系数的计算公式。建立了带缓行器汽车的制动力与广义I曲线匹配的定性评价法和定量评价法, 从而能从制动稳定性角度对缓行器制动力匹配的优劣程度给出评价。Abstract: This paper puts forward the concept of generalized I curve of the braking forces distribution between the front and rear of automobile equipped with retarder, and educes the computation equations of synchronized coefficient of road adhesion. The paper also establishes the qualitative and quantitative evaluation method of the braking forces matching up to the generalized I curve for automobile equipped with retarder. From the point of braking stability, evaluation of braking forces match of retarder can be inferred.
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Key words:
- automobile /
- retarder /
- braking /
- stability /
- evaluation
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图 1 原车前后制动器制动力及其匹配情况
Figure 1. The braking forces of the front and rear and match of original vehicle
表 1 实车制动参数
Table 1. Braking parameters of actual vehicle
参数 原车φ0 临界值φL 临界值FRL/N 最小制动力FRmin/N 最大制动力FRmax/N 0.635 0.318 4910 3962 6188 FR FRmin FRmax φ02 0.1783 不存在 φ01 0.4578 不存在 ηb/% φ 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 装缓行器 88 98 96 98 99 95 92 88 73 91 95 96 94 92 88 85 不装缓行器 74 78 82 87 92 98 97 92 74 78 82 87 92 98 97 92 
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[1] HELMUT Schreck, HEINZ kucher, BERNHARD Beisch, EF Friedrichshafen AG. ZF Retarder in commercial vehicles[J]. SAE Paper No. 922452, 1992. [2] 田, 须田, 山崎. 箱根中国自动车道リタ -ダ报告书[R]. 东京部品工业, 1992. [3] 桑原. 永久磁石涡电流式リタ -ダの开发の动机と经伟[J]. いすづ技报, 第97号, 1997: 82-91. [4] 余志生. 汽车理论[M]. 北京: 机械工业出版社, 2001. [5] MA Jian, CHEN Yin-san, YU Qiang, GUO Rongqing, ZHANG Qing-yu. The application study of retarder to automobile driving down slope road[J]. Journal of Xi'an Highway University, 1999, 19(4): 84-86. https://oversea.cnki.net/kcms/detail/detail.aspx?dbcode=cjfd&dbname=cjfd1999&filename=XAGL199904024 -
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