轿车钢带无级变速器设计

轿车钢带无级变速器设计+传动方案的设计+传动比设计+整车动力性计算 Metal Belt CVT Design for Automobile ABSTRACTThe metal pushing CVT

+++ 轿车钢带无级变速器设计传动方案的设计传动比设计整车动力性计算 Metal Belt CVT Design for Automobile ABSTRACT The metal pushing CVT is akind of new mechanical frictional type tran__ission. It provides ex__llent driving perfor__n__s including powerful driving capacity, high efficiency, good __oothness, economy, etc. Particularly it is fittest to the spots where driving or medium power and continuously adjusting revolution is ne__ssary. The pro__ss of development, basic structure, tran__ission principle, property characteristic and future trends of CVT are described for its uses of automobile. Metal belt CVT is the ideal vehicle tran__ission mode, is of national researchers and car companies focus review. The metal belt type continuously variable tran__ission history of the development, discusses the significan__ of their research, review of metal belt CVT and foreign research Study, the present situation of the metal belt continuously variable tran__ission electro-hydraulic control system control strategy trends. This article outlines the historical development of continuously variable tran__ission, classification, characteristics, and metal belt type continuously variable tran__ission basic structure, tran__ission diagram, working principle and the advantages and disadvantages. According to design requirements, conducted adrive in the design, tran__ission design and vehicle power than calculated. Metal pulley tran__ission control program design, the design of metal belt, clutch, intermediate redu__r, redu__r, planetary gear mechani__ design and computational geometry. Every __jor sector of the tran__ission parameters of the design was checked, including three clutch, continuously variable tran__ission mechani__, planetary row, redu__r, differential and so on .Accor Key words: strip infinitely variable CVT tran__ission design developing tendency , 摘要钢带无级变速器是一种新型的机械摩擦式无级变速器具有承载能力强、效率高、平 , 稳性好、环保节能等优良的传动特性它特别适用于需要传递中大功率而又需无级调速的场 ,,, 合。主要以其在轿车中的应用介绍了它的发展过程和现状基本结构传动原理性能特点和发 ,, 展趋势。钢带无级变速传动也是汽车理想的传动方式是各国研究者和汽车公司研究的重点 ,, 回顾了钢带无级变速器的发展历史论述了其研究的重要意义评述了金属带式无级变速器的 , 国内外研究现状展望了钢带无级变速器电液控制系统控制策略研究的发展趋势。 本文概述了无级变速器的发展历史、分类、特点以及金属带式无级变速器的基本结构、传动 简图、工作原理以及优缺点。根据设计要求，进行了传动方案的设计、传动比设计和整车动 力性计算。对照传动方案进行金属带轮设计、金属带的设计，离合器、中间减速器、主减速 器、行星齿轮机构的几何参数设计和计算。对变速器各个重要机构的参数设计进行了校核， 包括三个离合器、无级变速器机构、行星排、减速器、差速器等。根据各个轴的设计简图， 对轴和轴承完成了强度计算和寿命计算。 CVT 关键词：钢带无极变速变速器设计发展趋势 1 前言 1.1 变速技术发展简介 汽车变速器是汽车变速器的重要组成成员，由于汽油机控制的额定转矩范围很广，需要 用齿轮传动来控制驾驶时汽车速度的变化。早期的汽车传动系，从发动机到车轮之间的动力 传递性是很简单的，发动机驱动一组锥齿减速齿轮，在传递到一根轴和皮带轮上。皮带轮和 驱动桥上的链轮之间采用皮带传动，小链轮通过在一个驱动轮上的内齿轮啮合，使汽车行驶， 而大链轮用来进行汽车加速。如果汽车遇到上坡，此时汽车爬坡能力不够时，驾驶员就停下 车子，是小链轮啮合后再驱动汽车。