双离合器自动变速器速比的设计计算与优化

Design Calculation and Optimization of Dual Clutch Transmission Gear Ratio

双离合自动变速器作为新型自动变速器,近几年市场份额逐渐增加,其在换挡过程中实现动力不中断,平稳而迅速。本文主要阐述了如何确定变速器最低档、最高档的速比范围,并在此基础上计算其他档位速比。在参考标杆样机的一阶比基础上,通过比较一阶比值、动力性和经济性确定最优速比方案。

As a new automatic transmission,DCT's market share increased in recent years.Its power is not interrupted in the process of shifting,and the process is smooth and rapid.This article explains how to determine the scope of transmission ratio and calculate other gears ratio.On the basis of benchmarking,the optimal ratio is determined by comparing the first order,power performance and fuel economy.