吉利汽车7 速湿式双离合器自动变速器开发实践
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吉利汽车7速湿式双离合器自动变速器开发实践
Geely Automobile 7 speed wet dual clutch automatic transmission development practices
摘要
吉利7速湿式双离合器自动变速器工程样机的自主设计开发，主要采用仿真分析为主的模块
化研究开发方法，其主要包括对7DCT的NVH仿真设计分析、对自动变速器润滑系统CFD分
析、并以AMESIM为手段开发液压阀体、以FLUENT为手段开发油泵、以先进的多体动力学分
析方法为手段开展传动系统安全可靠性设计来优化变速器关键部件结构，有效提高了7DCT自
动变速器性能。同时以CAE集成技术为核心的仿真驱动设计技术的应用，使以往开发设计中的
经验性知识和试验数据以量化的形式出现，提高了产品开发效率。另外，由于CAE工程分析和
预测技术的实施，帮助设计人员通过仿真分析与预测，在产品定型前明确和提高了性能质量，
降低了设计成本，减少了对试制产品的反复试验验证次数。开发期间还对7DCT润滑系统和驻
车机构及液压阀体总成等重要零部件通过实际的基础试验对仿真分析进行修正，对设计进行改
善优化。使得7DCT工程样机和工程样车完全达到了预期的设计目标。
Geely 7-speed wet dual clutch automatic transmission engineering prototype is independently
designed and developed by GRI, we mainly use simulation analysis based modular method of research
and development, which mainly include 7DCT the NVH simulation design analysis, CFD analysis of
the automatic transmission lubrication system, development of hydraulic valve body via AMESIM and
FLUENT as a means of development of the oil pump, the advanced multi-body dynamics analysis
method as a means to carry out the transmission system security and reliability designed to optimize
the transmission key components of structure, improve 7DCT automatic transmission performance.
CAE integration technology as the core application of simulation-driven design techniques, the
empirical knowledge of the past development and design and test data to quantifiable form appears, to
improve the efficiency of product development. In addition, due to the implementation of the of CAE
engineering analysis and forecasting techniques to help designers through simulation analysis and
prediction, stereotyping and clear before production and improve the quality of the performance and
reduce design costs, reduce trial and verify the number of trial products. During the development,
important parts of the 7DCT like lubrication system and parking mechanism and hydraulic valve
assembly by the actual basis of test the correct simulation analysis, improved design optimization. To
make 7DCT engineering prototype and engineering prototype vehicle to fully meet the expected design
goals.
关键词
DCT，DCTF，驻车制动系统，润滑系统，NVH分析，多体运动学仿真，
基础实验
DCT, DCTF, parking brake system, lubrication system, NVH analysis, multi-body kinematics
simulation, basic experiment
