自动变速器自动变速的设计与研究

Design and Study of Automatic shift of Automatic Transmission

随着科技的发展、人类社会的进步,人们对生活质量的追求越来越高,对汽车的品质要求也越来越高。自动变速器的出现实现了车辆的自动变速,降低了驾驶员的劳动强度及污染排放,提高了汽车的动力性、经济型及舒适性。自动变速技术作为自动变速器控制的核心策略之一,直接决定了自动变速器的性能优越。文章首先介绍了当前市场上主流的几款自动变速器的发展历程,讨论了电控液力自动变速器的结构与系统原理;论述了自动变速器的档位控制策略及各个变速模式;接着分析了各种变速规律的原理及其性能,探讨了降档速差并且重点分析了换档线的经济型和动力性;最后简述了双离合变速器的档位预挂功能。

Along with the development of science technology and the progress of human society, People's pursuit of the quality of life is getting higher and higher. The quality requirement of the car is also getting higher and higher. The Automatic Transmission of the vehicle makes the automatic shift possibly. It reduces the driver's labor intensity and decreases the pollution emissions. It also improves the power, economy and comfortable for drivers at the same time. Automatic shift technology is one of the key strategies for Automatic Transmission control. It determines the performance of the Automatic Transmission directly. Here firstly introduces the development history of several Automatic Transmissions in the current market, discusses the structure and system principle of Automatic Transmission, describe the strategy of target gear control and the shift mode. Here also introduces each shift’s principle and performance, it analysis the Economy shift maps and Sport shift maps. It shows the Pre-selecting function strategy for Dual Clutch Transmission.