【正文】 ........................................... 9 汽缸中心距及其缸徑比確定 ................................................................ 9 發(fā)火次序的選擇 .................................................................................. 9 燃燒室的選擇 ..................................................................................... 10 柴油機的總體布置 ......................................................................................... 10 柴油機總體布置的一般要求 ...............................................................11 柴油機總體布置的選擇 .......................................................................11 本章小結(jié) ......................................................................................................... 12 3 熱計算與熱平衡 ........................................................................................................ 13 熱計算 ............................................................................................................. 13 燃料燃燒及成分確定 .......................................................................... 13 周圍介質(zhì)參數(shù)和剩余氣體 .................................................................. 14 進氣過程 .............................................................................................. 15 中南大學(xué)學(xué)士學(xué)位論文 目錄 iii 壓縮過程 .............................................................................................. 17 中南大學(xué)學(xué)士學(xué)位論文 目錄 iv 燃燒 過程 .............................................................................................. 19 膨脹過程 .............................................................................................. 20 工作循環(huán)參數(shù) ................................................................................................. 21 發(fā)動機指示參數(shù) .................................................................................. 21 發(fā)動機有效指標 .................................................................................. 22 發(fā)動機重要參數(shù) .................................................................................. 23 示功圖的繪制 ................................................................................................. 24 熱平衡 ............................................................................................................. 27 外特性計算及曲線繪制 ................................................................................. 29 本章小結(jié) ......................................................................................................... 33 4 高壓共軌供油系統(tǒng)設(shè)計 ............................................................................................ 35 共軌噴油系統(tǒng) ................................................................................................. 35 主要特點 ...................................................................................................... 35 功能 ...................................................................................................... 35 選型與計算 ..................................................................................................... 37 噴油泵的選型與計算 .......................................................................... 37 噴油器的選型與計算 .......................................................................... 39 出油閥的選型 ...................................................................................... 42 輸油泵選型 .......................................................................................... 42 本章小結(jié) ......................................................................................................... 43 5 總結(jié)與結(jié)論 ................................................................................................................ 44 參考文獻 .......................................................................................................................... 46 中南大學(xué)學(xué)士學(xué)位論文 符號說明 v 符號說明 τ 沖程數(shù) i 氣缸數(shù) ε 壓縮比 n 轉(zhuǎn)速， rpm Cm 活塞速度， m/s α 過量空氣系數(shù) Pa 進氣終了壓力， MPa Pc 壓縮終了壓力， MPa T 溫度， K ηi 指示效率 ge 有效燃料消耗率 ， g/kWHigh pressure mon rail。h .And as the rotational speed increases fuel consumption first decreased and then increased,When Rotational speed is2021rpm,has minimum value 關(guān)鍵詞： 車用柴油機；高壓共軌；供油系統(tǒng)；噴油量 中南大學(xué)學(xué)士學(xué)位論文 Abstract ii T automotive diesel engine thermodynamic calculation and the high pressure mon rail system design Abstract:This paper introduces the position of vehicle diesel engine briefly,and march the parameter and thermodynamic calculation of the turbo automotive vehicle diesel engine in detail,the system use four cycle ,straightfour and turbo Charging with Intercooling,Straight spray bustion chamber engines,the ratio of pression is .When Standard conditions the parameter and thermodynamic calculation result is effective work considerable heat accounted for %of the total fuel characteristic parameter results are the effective power is ,effective torque is 233N噴油器選擇 4 孔長型噴油嘴 ,出油閥選擇等容式出油閥，輸油泵選擇活塞式輸油泵 ，與國內(nèi)外主流車型相比，在燃油經(jīng)濟性方面具有較大優(yōu)勢，排放能達到歐 III標準，零部件的設(shè)計加工比較容易，整車性能較穩(wěn)定。h ，每小時耗油量和機械損失壓力隨著轉(zhuǎn)速的提高而增加。h 。m， 。標準工況下， 熱計算和熱平衡結(jié)果為 有效功相當?shù)臒崃空既剂峡偀崃康?48%。