考虑DCT车辆起步过程离合器接合稳定性的双质量飞轮参数优化

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振动与冲击 ›› 2023, Vol. 42 ›› Issue (14) : 162-169.

论文

郭政1，秦大同1，李盛炜2，刘永刚1

作者信息 +

Parameter optimization of a dual mass flywheel considering clutch engagement stability during the starting of a DCT vehicle

GUO Zheng1,QIN Datong1,LI Shengwei2,LIU Yonggang1

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摘要

在车辆起步过程中，发动机输出转矩波动会导致离合器接合不稳定，从而影响整车动力传动系统的平顺性。双质量飞轮（Dual mass flywheel, DMF）可减小发动机转矩波动对离合器及整车动力传动系统的影响。针对起步过程离合器接合不稳定影响整车平顺性的问题，以双离合器自动变速器（Dual clutch automatic transmission, DCT）车辆为研究对象，研究了DMF的刚度、阻尼和初级与次级飞轮惯量比对DCT车辆起步过程离合器接合稳定性的影响，并建立了以离合器粘滑比和整车冲击度为目标函数的多目标优化模型，利用遗传算法对模型进行优化，得到了使离合器接合稳定性提高且整车冲击度明显降低的DMF最优参数组合。

Abstract

In the starting process, the fluctuation of engine output torque leads to unstable clutch engagement and affects the ride comfort of the vehicle powertrain. Dual mass flywheel (DMF) can reduce the influence of engine torque fluctuation on clutch and vehicle powertrain. Aiming at the problem that clutch engagement instability affects vehicle ride comfort during the starting process, the influence of DMF stiffness, damping and inertia ratio of primary and secondary flywheel of DMF on clutch engagement stability of DCT vehicle during the starting process was studied by taking Dual clutch automatic transmission (DCT) vehicle as the research object. A multi-objective optimization model with clutch stick slip ratio and vehicle jerk as the objective function was established. The model was optimized by genetic algorithm. The optimal parameter combination of DMF which improves the clutch engagement stability and significantly reduces the vehicle impact was obtained.

关键词

双质量飞轮 / 遗传算法 / 离合器接合稳定性 / 粘滑比 / 双离合器自动变速器 / 起步过程

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郭政1，秦大同1，李盛炜2，刘永刚1. 考虑DCT车辆起步过程离合器接合稳定性的双质量飞轮参数优化[J]. 振动与冲击, 2023, 42(14): 162-169

GUO Zheng1,QIN Datong1,LI Shengwei2,LIU Yonggang1. Parameter optimization of a dual mass flywheel considering clutch engagement stability during the starting of a DCT vehicle[J]. Journal of Vibration and Shock, 2023, 42(14): 162-169

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