Title page for 943303003


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Student Number 943303003
Author Hsien-Ter Kuo(郭憲德)
Author's Email Address sandro.guo@msa.hinet.net
Statistics This thesis had been viewed 1727 times. Download 1342 times.
Department Mechanical Engineering
Year 2006
Semester 2
Degree Master
Type of Document Master's Thesis
Language zh-TW.Big5 Chinese
Title inlet port development of gaoline engine by applying the reverse engineering technology
Date of Defense 2007-07-02
Page Count 87
Keyword
  • flow coefficien
  • inlet port
  • volumetric efficiency
  • Abstract The performance of the inlet port in four stroke gasoline engine has great influence on the volumetric efficiency which affects the output of the engine. It is often in the automotive industry to perform a steady state flow test across the inlet port to acquire the actual mass flow rate and calculate the flow coefficient to evaluate whether the inlet port design meets the pre-defined requirement or not. By following the development procedure of the inlet port, some design guidelines as well as engineer’s experience are used to conduct the 2D inlet port design and its 3D model. A flow box is then manufactured to perform a trial and error test on the steady-state flow bench until the pre-defined target is achieved. The improved flow box is then used to go through the rest of the product development process. The objective of this research is to apply the technology of reverse engineering to assist or improve the inlet port development tasks, and hopefully, to make the product modification and development more precisely and quickly. The modified data of the inlet port could be feedback to the original CAD model so that the entire port development process can be improved.
    Table of Content 摘要 ...................................................................................................................I
    ABSTRACT........................................................................................................ II
    致謝 ................................................................................................................ III
    目錄 ................................................................................................................IV
    圖目錄 ................................................................................................................VI
    表目錄 ............................................................................................................. VIII
    第一章 緒論......................................................................................................... 1
    1.1 前言........................................................................................................ 1
    1.2 文獻回顧................................................................................................ 3
    1.2.1 逆向工程技術在工業界之應用................................................. 3
    1.2.2 四衝程汽油引擎進氣氣道的設計、開發................................. 6
    1.3 研究目的與方法.................................................................................... 8
    1.4 論文架構............................................................................................. 13
    第二章 標準流量盒之CAD 模型重建及加工複製........................................ 14
    2.1 前言...................................................................................................... 14
    2.2 建構3D 實體模型............................................................................... 14
    2.2.1 逆向掃描及建構線及面模型................................................... 15
    2.2.2 使用市售軟體CATIA 正向建構3D 實體模型..................... 16
    2.3 製作掃描流量盒................................................................................... 17
    2.4 標準流量盒與掃描流量盒之幾何差異與討論.................................. 17
    2.4.1 CAD 模型誤差比對.................................................................. 17
    2.4.2 曲面誤差分析........................................................................... 18
    2.4.3 誤差分析結果綜合討論........................................................... 18
    第三章 進氣氣道流量實驗................................................................................ 30
    3.1 前言....................................................................................................... 30
    3.2 流量方程式之推導............................................................................... 30
    3.2.1 流量係數................................................................................... 30
    3.2.2 理論質量流量m􀀅ideal 的計算...................................................... 31
    V
    3.2.3 實際質量流量m􀀅 act 的計算[28] ................................................. 32
    3.3 穩流流量設備及其校正程序.............................................................. 36
    3.3.1 音速噴嘴校正原理及結果[29]................................................ 36
    3.3.2 自製音速噴嘴校正程序及結果............................................... 36
    3.3.3 進氣氣道流量測試及計算....................................................... 37
    第四章 流量實驗結果與討論........................................................................... 49
    4.1 前言....................................................................................................... 49
    4.2 流量實驗結果....................................................................................... 49
    4.3 流量係數f C 之誤差探討..................................................................... 59
    4.3.1 安裝流量盒時,造成流量係數之誤差.................................... 59
    4.3.2 製作流量盒時,造成流量係數之誤差.................................... 59
    4.3.3 試驗操作時,造成流量係數之誤差........................................ 59
    4.3.4 讀取試驗數據時,造成計算流量係數之誤差........................ 60
    4.4 流量係數f C 之誤差驗證..................................................................... 61
    4.5 綜合討論.............................................................................................. 61
    第五章 結論與未來展望................................................................................... 71
    5.1 結論...................................................................................................... 71
    5.2 未來展望.............................................................................................. 72
    參考文獻............................................................................................................. 75
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    Advisor
  • Jiing-Yih Lai(賴景義)
  • Files
  • 943303003.pdf
  • approve immediately
    Date of Submission 2007-07-19

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