本文關(guān)鍵詞： 內(nèi)燃機(jī) 微動力裝置 自由活塞 泄漏 均質(zhì)充量壓燃 數(shù)值模擬　出處：《內(nèi)燃機(jī)工程》2016年02期 　論文類型：期刊論文

【摘要】：利用數(shù)值模擬計算軟件,結(jié)合甲烷詳細(xì)化學(xué)反應(yīng)動力學(xué)機(jī)理及動網(wǎng)格技術(shù),對微自由活塞動力裝置中自由活塞與微燃燒壁面之間不同間隙條件下壓縮著火過程進(jìn)行模擬計算。計算結(jié)果表明:相同條件下,隨著間隙的增大,單次壓縮著火周期增長,工作頻率變小,但著火時刻點(diǎn)基本不變;間隙大小相同的條件下,活塞初速度越大,壓縮比越大,動力輸出性能越差。同時,對臨界壓縮比隨著間隙大小的變化規(guī)律進(jìn)行計算,分析得出在無泄漏條件下臨界壓縮比值為48,微動力裝置壓縮比大于臨界壓縮比時,混合氣體才能壓縮著火,且隨著泄漏間隙的增大,臨界壓縮比值也隨之增大。
[Abstract]:Using numerical simulation software, combined with the kinetic mechanism of detailed chemical reaction of methane and dynamic grid technology, The compression ignition process between the free piston and the micro combustion wall in the micro free piston power plant is simulated and calculated. The results show that the single compression ignition cycle increases with the increase of the clearance under the same conditions. The working frequency becomes smaller, but the ignition point is basically unchanged. The larger the initial velocity of piston is, the greater the compression ratio is, and the worse the dynamic output performance is when the clearance size is the same. At the same time, the variation of critical compression ratio with the gap size is calculated. It is concluded that when the critical compression ratio is 48 and the compression ratio is greater than the critical compression ratio under the condition of no leakage, the mixture can compress and ignite, and the critical compression ratio increases with the increase of the leakage gap.
【作者單位】： 江蘇大學(xué)能源與動力工程學(xué)院;
【基金】：國家自然科學(xué)基金項(xiàng)目(51076060) 江蘇省研究生科研創(chuàng)新項(xiàng)目(CXZZ12_0672) 江蘇大學(xué)高級人才科研啟動基金項(xiàng)目(14JDG146)
【分類號】：TK401

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 周杰;白松;鄭英臣;;活塞式液體泵用于航空輸氧的可行性分析[J];深冷技術(shù);2014年01期

2 沈序章;;活塞式氣動馬達(dá)的動力特性分析[J];流體傳動與控制;2008年03期

3 吳波;向康;楊金江;茍利軍;吳迪;;活塞式液體灌裝系統(tǒng)精度試驗(yàn)研究[J];武漢理工大學(xué)學(xué)報(信息與管理工程版);2013年04期

4 和露霞;;活塞式壓縮機(jī)氣閥常見問題及技術(shù)改造[J];硅谷;2013年16期

5 翁oず，

本文編號：1542115