基于双离合变速器的起步控制优化研究  

Research on the Optimization of DCT Performance Based on Dual Clutch Launching

作　　者：龚君 李滨 熊斌 陈裕棋 Gong Jun;Li Bin;Xiong Bin;Chen Yuqi(Magna Powertrain Jiangxi Co.,Ltd.,Nanchang 330013)

机构地区：[1]麦格纳动力总成江西有限公司,南昌330013

出　　处：《汽车技术》2025年第3期56-62,共7页Automobile Technology

摘　　要：针对某双离合变速器(DCT)车型在极限工况下前进挡(Drive)D1挡起步的离合器过热问题,提出用双离合起步的控制方法来提升车辆的爬坡和脱困性能。通过分析硬件结构条件、离合器片温度模型和DCT起步具体过程,在起步稳速阶段使用D2挡离合器来承担无用滑摩功,当发动机扭矩增加且超过阈值时,切换D1挡离合器,并详细阐述该控制方法的激活条件和具体实施过程。实车验证结果表明:双离合起步策略对于离合器温度控制、驾驶平顺性均具有明显优势,车辆爬坡和脱困性能得到显著提升。In order to solve the problem of clutch overheating during the launching of a Dual Clutch Transmission(DCT)vehicle in the Drive mode of D1 gear under extreme working conditions,this paper proposes a dual-clutch launching control method to improve the climbing and escape performance of the vehicle.Based on the analysis of the hardware structural conditions,the clutch plate temperature model and the specific process of DCT launching,this paper proposes to use the D2 gear clutch to undertake the useless slipping power at the beginning of the steady speed stage of launching,and then switch back to the D1 gear clutch when the engine torque gradually increases to exceed the threshold,the paper then elaborates in detail the activation conditions and specific implementation process of the control method.Vehicle test verification shows that the dual-clutch launching has obvious advantages in clutch temperature control and driving smoothness compared with the single-clutch launching,and the vehicle climbing and escape performance has been significantly improved.

关 键 词：双离合变速器 双离合起步 DCT过热 

分 类 号：U463.2[机械工程—车辆工程]