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博碩士論文 etd-0209109-121326 詳細資訊
Title page for etd-0209109-121326
論文名稱
Title
行星齒輪式汽車自動變速器之設計方法研究
Study on the Design Methodology for the Epicyclic-Type Automatic Transmissions of Automobiles
系所名稱
Department
畢業學年期
Year, semester
語文別
Language
學位類別
Degree
頁數
Number of pages
311
研究生
Author
指導教授
Advisor
召集委員
Convenor
口試委員
Advisory Committee
口試日期
Date of Exam
2009-01-15
繳交日期
Date of Submission
2009-02-09
關鍵字
Keywords
Ravigneaux、基本齒數比、運動分析、傳動效率、自動變速器、檔位合成、離合器配置、行星齒輪機構、轉速比
automatic transmission, arrangement of clutches, speed ratio, basic gear ratio, kinematic analysis, mechanical efficiency, clutching-sequence synthesis, epicyclic gear mechanism, Ravigneaux
統計
Statistics
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中文摘要
行星齒輪式汽車自動變速器為配置於引擎與驅動輪之間的一種傳動裝置,主要提供車輛在增減速時讓引擎維持在一定的工作轉速範圍。已量產的行星齒輪式汽車自動變速器數目雖多,但在檔位合成與離合器配置設計理論的發展上仍待完善,加上圖集目錄中可做為汽車自動變速器的構造尚未被確認,故本研究主要目的在於提出一套有效的行星齒輪式汽車自動變速器設計方法,以進行構造圖集目錄的自動變速器設計。本文首先介紹行星齒輪式汽車自動變速器的基本組成與作動原理、以及行星齒輪機構的構造圖集目錄,然後建立行星齒輪式汽車自動變速的設計規格,並對現有汽車自動變速器進行性能分析;其次提出計算式比較法的檔位合成理論,另一方面說明比例法基本原理與探討槓桿比例圖的檔位合成方法;接著提出一套以圖畫為基礎的自動變速器之離合器配置理論,並以解析合成法為基礎建立一齒數設計方法;最後發展電腦輔助檔位設計方法並撰寫對應的電腦程式。應用本研究所提設計理論對12型七桿二自由度之二排行星齒輪機構、1型七桿二自由度與1型八桿二自由度Ravigneaux式行星齒輪機構、以及190型九桿二自由度之三排行星齒輪機構等共204型機構進行自動變速器設計。設計結果顯示七桿二自由度行星齒輪機構、八桿二自由度Ravigneaux式行星齒輪機構與九桿二自由度之三排行星齒輪機構確實能提供的最高檔位數目分別為四速、六速與六速,並驗證所提方法的可行性。
Abstract
An automatic transmission is a device that is connected to the back of an engine and sends the power from the engine to the drive wheels. Its job is to keep the engine within a certain angular velocity. Although there are many epicyclic-type automatic transmissions in production, the related configuration design methods are still tedious and prone to human error. A simple and analytic methodology needs to be developed. Therefore, the purpose of this research is to present an efficient methodology for the systematic design of the epicyclic gear transmissions for automobiles. First, fundamentals and gear-shifting operations of the four-speed, five-speed and six-speed epicyclic-type automatic transmissions are illustrated to establish the design requirements. Second, based on the kinematic equations of the fundamental geared entities and the corresponding basic gear ratios, a procedure is applied to execute the kinematic and mechanical-efficiency analyses for the automatic transmissions. Third, two simple clutching-sequence synthesis methods are proposed and illustrated. One is based on the speed ratio equations, and another is based on the lever diagram. Next, a planar-graph representation is presented to arrange the desired clutches for each possible clutching sequence into the epicyclic gear mechanism. Then, the number of teeth of each gear is synthesized from assigning two or three desired speed ratios by the analytic method. Finally, a computer-aided design program for the clutching-sequence synthesis is developed with the considerations of the design requirements. With the above methods, the systematic designs of the 204 epicylic gear mechanisms are given for demonstrating the feasibility of the proposed methodology. The result of this work shows that the seven-link two-DOF epicylic gear mechanisms, the eight-link two-DOF Ravigneaux gear mechanism, and the nine-link two-DOF parallel-connected epicylic gear mechanisms could reach four-, six-, and six-forward speeds at most, respectively.
目次 Table of Contents
中文摘要 ..........................................................................I
英文摘要 ......................................................................... II
目錄 ................................................................................. III
圖目錄 ..............................................................................VI
表目錄 ..............................................................................X
第一章 前言 ................................................................... 1
1-1 文獻回顧 .................................................................. 1
1-2 研究動機與目的 .......................................................10
1-3 論文架構 ...................................................................13
第二章 基本概念 ........................................................... 14
2-1 行星齒輪式汽車自動變速器 ............................... 14
2-2 行星齒輪機構 ....................................................... 30
2-3 設計規格之釐定 ..................................................... 45
2-4 結語 ......................................................................... 52
第三章 性能分析 ........................................................... 53
3-1 檔位轉速比與基本齒數比分析 ........................... 53
3-2 轉速分析 ............................................................... 61
3-3 轉矩分析與傳動效率分析 ................................... 69
3-4 結語 ......................................................................... 82
第四章 檔位合成 ........................................................... 83
4-1 計算式比較法.......................................................... 83
4-1-1 基本理論 ........................................................... 83
4-1-2 檔位合成程序 ................................................... 88
4-2 計算式比較法之檔位合成 ..................................... 89
4-2-1 七桿二自由度行星齒輪機構 ........................... 89
4-2-2 八桿二自由度行星齒輪機構 ........................... 105
4-2-3 九桿二自由度行星齒輪機構 ........................... 111
4-3 比例法 ..................................................................... 120
4-3-1 基本原理 ........................................................... 120
4-3-2 檔位轉速比分析 ............................................... 123
4-4 比例法之檔位合成 ............................................... 131
4-4-1 二自由度四共軸構件之行星齒輪機構 ............ 131
4-4-2 二自由度五共軸構件之行星齒輪機構 ............ 139
4-4-3 比例法之檔位合成實例 .................................... 147
4-5 結語 .......................................................................... 152
第五章 離合器配置設計 .................................................154
5-1 自動變速器平面圖畫與編號..................................154
5-2 離合器配置設計程序 .............................................160
5-3 離合器配置設計 .....................................................161
5-4 結語 .......................................................................... 178
第六章 齒數設計 ............................................................ 179
6-1 基本理論 .................................................................. 179
6-2 齒數設計程序 ........................................................ 183
6-3 七桿二自由度行星齒輪機構之齒數設................. 184
6-4 八桿二自由度行星齒輪機構之齒數設................. 198
6-5 九桿二自由度行星齒輪機構之齒數設................. 209
6-6 結語 .......................................................................... 220
第七章 電腦輔助檔位設計 ............................................ 221
7-1 電腦輔助產生轉速比計算式方法 ........................ 221
7-2 電腦輔助檔位設計方法 ........................................ 229
7-3 190型三排行星齒輪機構之電腦輔助檔位設計.. 244
7-4 結語 .......................................................................... 257
第八章 並排式六速自動變速器 .................................... 258
8-1 離合器配置 ............................................................ 258
8-2 齒數設計 ................................................................ 264
8-3 性能分析 ................................................................ 270
8-4 結語 .......................................................................... 281
第九章 結論與建議 ........................................................ 282
參考文獻 .......................................................................... 286
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