汽车自动变速器发展现状

论文题目：汽车自动变速器的发展现状

摘要

随着科学技术的不断进步，汽车工业相应得到了迅速发展。如何快速而平稳地把发动机的动力传递到驱动车轮上，是影响汽车操纵方便性与平顺性的关键之所在，要想解决好这些问题，首先要了解自动变速器技术特别是液力变矩器等相关技术的发展。

变速器的电子技术控制是影响汽车操纵方便与平顺的关键所在，而自动变速就是根据汽车速度，发动机转速及动力负荷等信号使自动变速器自动进行升降档位，不需驾驶者操作离合器换挡的变速器。驾驶者可以全神贯注地注视路面交通而不会被换挡搞得手忙脚乱，从而减少了驾驶者的疲劳度，增加了驾驶者的驾驶乐趣。自动变速的便利性和人类对舒适性的更高追求，使得自动变速器的发展更加的深入，具有良好的自动调节和适应性。使车辆更加稳定，加速均匀，其减振作用降低了传动系的动载和杻振，延长了传动系的使用寿命，提高了乘坐的舒适性，行驶安全性，通过性以及车辆的平均速度。下面我们就从新的角度去了解自动变速器的发展现状与展望。

关键字：电子技术，自动变速器，传动系，舒适性

Abstract

With the development of science and technology, the auto industry has been rapid development of corresponding. How quickly and smoothly transfer the power of the engine to the drive wheels, is the impact of vehicle handling and ride comfort Convenience key, to solve these problems, we must first understand the automatic transmission technology, especially the development of hydraulic torque converter and related technology.

In the modern society congestion and the busy traffic, in order to reduce beset by driving and bring more and more users, automatic-shift cars favored. Transmission electron technology control affect auto manipulation convenient and is the key to ride, and automatic transmission is according to the bus speed, engine speed and power load automatic transmission signals of make lifting gear automatically, without the need to drivers shift transmissions operate the clutch. Drivers can be absorbed in watching road traffic without being shift make hurry-scurry, thus reducing the driver fatigue2 loss, increased the drivers driving pleasure. The convenience and automatic transmission of the human pursuit, making higher comfort the development of the automatic transmission, good more deeply the automatic adjustment and adaptability. Make vehicles more stable, accelerate even, its minus up transmission system with reduced dynamic load and Chou vibration and prolong the service life of the transmission system, improve the ride comfort, driving through sexual and vehicle safety, the average speed. Next, we will go to understand from a new perspective of automatic transmission development present situation and prospect.

Key Words：electronic technique，automatic regulation，drivetrain，comfort

目录

1引言 (1)

2自动变速器基本理论知识 (1)

2.1自动变速器的发展历程 (1)

2.2自动变速器的工作原理 (2)

2.2.1电控液力自动变速器的工作原理 (2)

2.2.2电控无级变速器的工作原理 (3)

2.2.3 DCT双离合自动变速器的工作原理 (5)

3自动变速器的现状 (7)

3.1电子技术对自动变速器的控制 (7)

3.1.1 锁止离合器控制的要求 (7)

3.1.2锁止控制电磁阀 (7)

3.1.3 锁止电磁阀控制锁止离合器 (7)

3.1.4调压电磁阀控制原理 (8)

3.2自动变速器主油压的调节......... (8)

3.2.1自动变速器微机控制管路油压的调 (8)

3.2.2蓄压器调节电磁阀与缓冲电磁阀 (9)

3.3自动变速器的润滑 (9)

4自动变速器的展望 (10)

5结果分析与讨论 (12)

6总结 (12)

参考文献 (13)

致谢 (14)