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四沖程自由活塞發(fā)動(dòng)機(jī)仿真與實(shí)驗(yàn)
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國家自然科學(xué)基金資助項(xiàng)目（50876043）;中國博士后科學(xué)基金資助項(xiàng)目（20110490135）;江蘇省博士后科研資助計(jì)劃資助項(xiàng)目（1002001B）


Simulation and Test of Four-stroke Free-piston Engine
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    摘要:

    為實(shí)現(xiàn)清潔高效利用燃料發(fā)電，提出并研究了四沖程自由活塞發(fā)動(dòng)機(jī),?；诨钊M件的動(dòng)力學(xué)方程,、燃燒室內(nèi)的氣體狀態(tài)方程以及代用燃燒放熱規(guī)律,，建立系統(tǒng)仿真模型,，對系統(tǒng)動(dòng)態(tài)特性進(jìn)行仿真研究,，重點(diǎn)討論了壓縮比和膨脹比對系統(tǒng)性能的影響,。在仿真分析的基礎(chǔ)上,，研制了一臺(tái)缸徑為62mm的原理性樣機(jī),，對樣機(jī)實(shí)驗(yàn)結(jié)果進(jìn)行了分析，并利用仿真模型對樣機(jī)的性能參數(shù)進(jìn)行了回歸分析,。研究結(jié)果表明：目前樣機(jī)的發(fā)電效率為34%左右,，優(yōu)化后四沖程自由活塞發(fā)動(dòng)機(jī)的發(fā)電效率在45%左右，比傳統(tǒng)小型汽油發(fā)電機(jī)組有明顯的性能優(yōu)勢,。

    Abstract:

    A four-stroke free-piston engine was simulated and tested to achieve energy conversion from fuel to electricity. Simulation models were created based on the kinetic equation of free-piston, the equation of gas state, and an equivalent heat release rate of combustion process. Dynamic properties of the system were analyzed by using the model. Effects of the compression ratio and the expansion ratio were discussed. Based on the results of the simulation, an experimental prototype was fabricated. Testing results of the prototype were analyzed, and performance parameters were given out in detail. The generating efficiency 34% was obtained up to now, and the efficiency 45% was available after optimization. According to the simulated and tested results, the new generating system has distinct advantages to conventional gasoline generators.

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徐照平,常思勤,黃玲.四沖程自由活塞發(fā)動(dòng)機(jī)仿真與實(shí)驗(yàn)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2012,43(7):1-6. Xu Zhaoping, Chang Siqin, Huang Ling. Simulation and Test of Four-stroke Free-piston Engine[J]. Transactions of the Chinese Society for Agricultural Machinery,2012,43(7):1-6.

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  • 在線發(fā)布日期: 2012-07-02
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