本文目的在研究：廣為運用在汽油引擎的空間平均熱傳模型，在直噴氫引擎峰值汽缸壓力與指示平均有效壓力(IMEP)計算上的表現。於燃料噴射時機提前、稀混合比、高轉速下，三傳統熱傳模型在峰值汽缸壓力計算上，與參考文獻的實驗數據均非常接近。但是，如果未計入直接噴射壓力與噴射提前角度所產生影響，三熱傳模型的指示平均壓力計算與實驗數值均有顯著誤差。

The purpose of this research is concerned with spatial averaged heat transfer model which is used in calculation of peak cylinder pressure and mean effect pressure of direct injection hydrogen engine. The simulation effects of three heat transfer model which was adopted on injection timing, lean air fuel ratio, high engine speed have good correlation with experimental data. But ignored injection pressure and injection timing will result significant error in engine performance prediction.