文献类型：期刊文献

中文题名：基于CFD和AMESim联合仿真的重型AT缓速器制动性能研究

英文题名：Research on the Braking Performance of Heavy-Duty AT Retarder Based on CFD and AMESim Joint Simulation

作者：刘梓文 孙官朝 吴怀超 聂龙 刘波 谢嘉 龙运祥 杨绿

第一作者：刘梓文

机构：[1]贵州大学机械工程学院,贵州贵阳550025;[2]河南省许昌市科学技术情报研究所,河南许昌461000;[3]贵州理工学院机械工程学院,贵州贵阳550003;[4]贵州航天凯星智能传动有限公司,贵州遵义563003

第一机构：贵州大学机械工程学院,贵州贵阳550025

年份：2026

卷号：54

期号：2

起止页码：106-111

中文期刊名：机床与液压

外文期刊名：Machine Tool & Hydraulics

收录：;北大核心:【北大核心2023】；

基金：贵州省液力传动及智能控制全省重点实验室项目(黔科合平台ZSYS[2025]002);贵州省高等学校重点实验室项目(黔教技[2023]009号);贵州省科技计划项目(黔科合成果[2023]一般768);贵州省基础研究计划项目(黔科合基础-ZK[2023]一般133)。

语种：中文

中文关键词：重型液力自动变速器;液力缓速器;缓速力矩;联合仿真

外文关键词：heavy-duty hydraulic automatic transmission;hydraulic retarder;deceleration torque;co-simulation

摘要：缓速力矩是重型液力自动变速器缓速器研发的重要参数指标,为了尽可能接近缓速力矩的理论推导值,提出一种结合CFD计算的缓速力矩联合仿真技术。建立整车缓速下坡时的受力分析模型,并推导出缓速器的理论缓速力矩;建立缓速器液压系统模型,通过换挡仿真分析得到纯液压仿真数据与理论值相差较大。究其原因:缓速器内部运动剧烈,造成其压力场分布极度不均,难以具体计算出其内部的充液率。但其充液油路和排液油路的压力可以定量计算,因此建立内流场有限元模型,分析缓速器充液油路和排液油路进出口压力的变化规律,并进一步得到缓速器充液率;最后通过联合仿真将有限元模型与液压系统模型结合分析。结果表明:较纯液压仿真,联合仿真的输出力矩误差下降4.322%,最大振幅减少约54.24%,缓速效果提升明显。
A co-simulation method combining CFD simulation calculation was proposed to address the significant difference between the hydraulic model simulation and theoretical results of the heavy-duty hydraulic automatic transmission retarder.A force analysis model was established for the entire vehicle when decelerating downhill,and the theoretical deceleration torque of the retarder was derived.A hydraulic system model of the retarder was established,and pure hydraulic simulation data obtained through shift simulations differed significantly from the theoretical value.The reason was that the internal motion of the retarder was intense,causing the pressure field distribution to be extremely uneven,making it difficult to precisely calculate the internal filling rate.However,the pressures in the filling and draining oil circuits could be quantitatively calculated.Therefore,an internal flow finite element model was established to analyze the variation of the inlet and outlet pressures of the retarder′s filling and draining oil circuits,and further determine the retarder′s filling rate.Finally,a joint simulation was conducted by combining the finite element model with the hydraulic system model for analysis.The results show that compared with pure hydraulic simulation,the torque error output by joint simulation decreases by 4.322%,the maximum amplitude decreased by about 54.24%,and the deceleration effect is significantly improved.