臺灣博碩士論文加值系統

本研究利用排氣量1600 c.c.之三門喜美 K600噴射引擎搭配三菱（
MITSUBISHI) 公司的渦輪增壓器（MHITCO5-12），進行渦輪增壓器之探討
。從測試資料結果可知 ，加裝渦輪增壓器引擎在扭力及馬力上都較自然
進氣為佳。平均馬力與扭力可提高 30%~40%且CO和HC污染約減少20%。但
因渦輪增加之高溫高壓在內燃機之熱傳損失增加,因此在高轉速與高壓縮
比時，引擎馬力反而有下降之趨勢，最大不超過45KW。
此外研究以 CFX 4.1 模擬渦輪增壓器運作情形,以了解渦輪增壓器增壓
狀況及流場現象。數值模擬結果採用渦輪機70000RPM時，做一實驗與分析
之比較。但目前因CFX 4.1之能量守恆方程式設定無法在旋轉座標下運用
，造成經過渦輪增壓機後，全溫不正確。目前分析之結果僅能以全壓結果
做一定性分析，其結果顯示計算之出口全壓為 54393 Pa與測試結果
97637 Pa 有相當大之差異 ，未來將修正 CFX 4.1 中能量方程式方可做
一定量分析。

A Honda 1600 c.c. engine coupled with Mitsubish
turbocharger (MHITCO5-12) is used to study the engine and
turbocharger performance.The test results show the engine torque
and power increase 30%~40% compared to natural aspirated
engine. Also, the emission of CO and HC is reduced significantly
to about 20 % . However, due to the high temperature and
pressure air when turbocharger at high speed, the heat
transfer loss increases. Thus, for high speed turbocharger
operation, the engine power is limited to 45 KW.
Besides, a commercial code CFX 4.1 is used to analyze the
turbocharger flow field. The 70,000 rpm was chosen to compare to
numerical results with test data. However,due to the energy
equation in CFX 4.1 does not valid in rotatingframe. Hence, the
total temperature through the turbocharger does not increase or
decrease. The current results can only be used to compare with
test data qualitatively. The result from numerical gives an
exit total pressure of 54393 Pa and compares with test data of
97637 Pa . The large difference between these two results
needs further study.