全輪驅動車輛底盤測功機結構設計

機械論文編號:JX798  論文字數:16956.頁數:34   附CAD圖

目  錄
中文摘要 I
英文摘要 II
目  錄 III
第一章 緒論 1
1.1 汽車底盤測功機概述 1
1.1.1加載裝置 3
1.1.2測量裝置 3
1.1.3轉鼓 4
1.1.4其它裝置 4
1.2 底盤測功機的發展現狀 4
1.3 汽車底盤測功機的工作原理 5
1.4  汽車底盤測功機的測控系統 8
1.4.1汽車底盤測功機測控系統開發的意義 8
1.4.2汽車動力性評價指標 8
1.4.3汽車動力性評價指標體系 9
第二章  汽車底盤測功機的結構 11
2.1 底盤測功機硬件系統 11
2.2 機械結構 11
2.3底盤測功機的結構設計 12
2.3.1驅動電機 13
2.4 輔助裝置設計 21
2.5汽車底盤測功機的加載裝置的選型 22
第三章 底盤測功機功能介紹 26
3.1測功 26
3.2 測速 26
3.3 制動 26
3.4反拖 27
第四章 結論 28
參考文獻 29
致  謝 30

摘  要
 汽車底盤測功機是一項重要的室內臺架檢測設備，通過底盤測功機不僅可以對汽車進行動力性檢測，而且還可以測量多工況排放指標及油耗，同時還能方便地進行汽車加載調試和診斷汽車在負載條件下出現的故障等。所有測試結果的準確性和可靠性都取決于底盤測功機能否對汽車的道路行駛阻力做出真實的模擬。
  本文從底盤測功機的幾個基本裝置概述開始，結合其發展現狀，對其工作原理、機械結構以及測試過程中的道路行駛阻力進行分析，完成了本次設計。在設計中主要對驅動電機、轉鼓、傳感器以及風冷裝置等進行了型號和尺寸的選定，并確定了安裝尺寸，完成了結構設計圖。
 本文提出了利用交流測功機來取代傳統的電渦流測功機和水力測功機，通過先進的變頻調速技術來控制交流測功機以再現汽車的道路行駛情況。不僅省去繁瑣的慣性飛輪，簡化了機械結構，而且可以實現慣量的無級模擬。

關鍵詞：底盤測功機  動力性  道路行駛阻力  交流測功機

The Structural Design Of All-wheel Drive Vehicle Chassis Dynamometer

Abstract
 The Chassis Dynamometer is an important indoor bench testing equipment, through the chassis dynamometer,it can not only have a testing for the power of the car, but also can measure the status of multi-emissions and fuel consumption indicators, at the same time it   can easily debug and diagnosis of motor vehicles loaded car under load fault conditions, such as. All test results are determined by the accuracy and reliability of the chassis dynamometer can of road vehicles to make a real simulation of the resistance.
 This article from the chassis dynamometer to start an overview of several basic devices, combined with its development of its working principle and analysis of mechanical structure, completed the design. Mainly in the design of the drive motor, drum, air-cooled devices, such as sensors, as well as a selection of models and sizes and to determine the size of the installation to complete the structural design.
 In this paper, the use of the exchange of dynamometers to replace the traditional eddy current dynamometer and hydraulic dynamometer, through advanced technology for the control of  AC dynamometer to reproduce the situation of road vehicles. Not only the inertia of the flywheel eliminate red tape and simplify the mechanica structure, and can be achieved without the level of inertia simulation.

Keywords: Chassis dynamometer  Dynamic  Road Resistance   AC Dynamometer