1、1 摘 要 近年来，随着人们对汽车舒适度和环保节能要求的提高。虽然无级变速器和自动变 速器在操作模式上都可以叫做“自动档”，自动变速器也已经被广泛使用，但是自动变 速器的成本昂贵、结构复杂等缺陷，在许多场合已经不能满足人们的需求，能够连续改 变传动比，进而改善汽车经济性、排放指标和动力性的无级变速器成为汽车变速器的主 要发展方向。无极变速器是由变速传动机构、调速机构以及加压装置或输出机构三部分 组成的一种传动装置，它可以显著提高汽车的经济性，改善汽车的动力性，使汽车发动 机始终运行在最佳目标运行区，以满足机器或生产系统在运转过程中各种不同工况的要 求，这样就既可减少汽车的换挡冲击，也可减轻驾驶
2、员的劳动强度。目前汽车无级变速 器是汽车最理想的传动系统，具有很大发展空间，必将成为当前的研究热点。 关键关键词词：无级变速器 经济性 结构组成 原理 2 Abstract In recent years, as people for car comfort and environmental protection and energy saving requirements of the improved. Although step-less transmission and automatic transmission in the operation mode can be calle
3、d “auto“, automatic transmission has also been used extensively, but the cost of automatic transmission, complicated structure defects such as expensive, in many occasions already cant satisfy peoples needs, for continuous change gear ratios, and improving auto economy, emissions and dynamics perfor
4、mance step-less transmission become auto transmission of the main development direction. Promise by shifting transmission mechanism is the transmission and speed regulation institutions and pressure device or export agencies three parts of a kind of transmission device, it can greatly improve the efficiency of the car, improve the dynamic performance of the car, the engine are always running in the best goal operation area, in order to meet the machine or production system in operation proces
