基于量纲分析的液力缓速器制动性能试验分析

林彩霞

doi:10.3969/j.issn.1671-7775.2016.06.005

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江苏大学学报（自然科学版） ›› 2016, Vol. 37 ›› Issue (6) : 645-649. DOI: 10.3969/j.issn.1671-7775.2016.06.005

论文

基于量纲分析的液力缓速器制动性能试验分析

林彩霞

作者信息 +

Experiment analysis of hydraulic retarder brake performance based on dimension analysis

LIN Cai-Xia

Author information +

文章历史 +

摘要

为揭示液力缓速器制动性能诸影响因子的内在规律,基于量纲分析原理,通过台架试验,验证介质的物性参数、工作参数、缓速器结构参数等单值性条件对液力缓速器制动性能的作用效果,给出了由雷诺数、普朗特数、欧拉数、单位倾角和弦节比组成的液力缓速器准则函数.理论分析和试验结果表明:制动转矩受到油温的影响;在工作介质一定时,转矩与普朗特数成反比,随着普朗特数增加而降低;雷诺数越大,工作介质的受迫流动越剧烈,制动转矩随着雷诺数的增加而增大;随着工作腔内油压增加,制动转矩增加,液力缓速器制动过程的驱动力来源于工作腔工作介质的压力差.

Abstract

To disclose the essential rule of influence factor on hydraulic retarder brake， the effects of working media physical parameters, working parameters and geometry parameters on hydraulic retarder brake performance were tested and verified based on dimension analysis. The criterion function of brake torque was deduced with parameters of Re, Pr, Eu, unit dip angle and chordal section length ratio. The theory and experiment research results show that the torque performance is affected by oil temperature. The torque is inversely proportional to Pr for the same working liquid, and the torque is decreased with the increasing of Pr. The larger the Re is, the more violent the working media flows with increased torque. The torque is increased with the increasing of oil pressure, and the torque driving force comes from the pressure difference of working media.

导出引用

林彩霞. 基于量纲分析的液力缓速器制动性能试验分析[J]. 江苏大学学报（自然科学版）, 2016, 37(6): 645-649 https://doi.org/10.3969/j.issn.1671-7775.2016.06.005

LIN Cai-Xia. Experiment analysis of hydraulic retarder brake performance based on dimension analysis[J]. Journal of Jiangsu University(Natural Science Edition), 2016, 37(6): 645-649 https://doi.org/10.3969/j.issn.1671-7775.2016.06.005

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