随着汽车技术不断进步和成本的降低，汽车越来越受到人们的喜爱，很多人都拥有了自己的汽车，无论在城市，还是在农村，汽车都已经成为非常重要的交通工具。汽车技术不断进步的同时，人们对汽车性能的要求也越来越高。舒适的驾驶性和更低的能源消耗成为人们对未来汽车的共同追求。 　　　配置自动挡变速器的汽车具有舒适的驾驶性，但油耗比手动挡的汽车高,而且价格也较贵，针对舒适性和成本两者之间的矛盾，设计了一种新型的汽车变速器,本论文的主要研究内容包括：一、根据目前汽车变速器技术水平和发展趋势，提出了新型变速器的传动系统方案，并设计了新型变速器的结构。二、对这种新型的传动系统结构进行原理分析，说明了这种结构实现功率分流无级变速功能的原理。三、对新型变速器的运动特性和动力特性进行分析，得出运动特性和动力特性与系统结构参数之间的变化曲线。分析结果表明，本文设计的变速器结构具有功率分流无级变速传动的特征，能够实现减小调速机构负载的功能。 论文设计了新型传动装置的原理结构方案，并对其特性进行了分析，为这一新型传动装置的进一步实验研究和开发提供了理论基础。

With the progress of automotive technology and reduction of cost, the car is becoming more and more popular, there are many people have their own cars , whether in the city, or in the countryside, Cars have become very important means of transportation.As technology continues to advance ,the requirements of the vehicle performance has becoming more and more high. Comfortable driving and lower energy consumption is the common pursuit of of cars in the future. 　　　Vehicle with automatic transmission has a comfortable driving, But has higher fuel consumption and price than manual cars; In view of the contradiction between comfort and cost, this paper puts forward a new plan.The main research content of this paper includes three aspects: the first one is based on the current technical level and developing trend, put forward a new transmission system scheme, and design the basic structure. Secondly , analyze this new structure plan and the principle of this new transmission system to shows that how the new structure realize the function of power split and continuously variable transmission. Thirdly, analyses the static characteristics and transmission characteristics of the new structure, concluded that both the change curve between structure parameters and the system.The results show that the new transmission structure has the characteristics of the power split and continuously variable transmission, can reduce the load of the infinitely variable speed mechanism. This Paper puts forward a new transmission system and design the basic structure , and studies the properties of the new structure ,provides a theoretical basis for further experimental study and development of the new type transmission device.