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不同噴孔夾角的直噴柴油機(jī)渦流室燃燒系統(tǒng)性能分析
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國(guó)家自然科學(xué)基金資助項(xiàng)目（51106065）;江蘇省高校自然科學(xué)基金資助項(xiàng)目（11KJB470006）


Influence of Nozzle Hole Cone Angle on Swirl Chamber Combustion System in Direct Injection Diesel
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    摘要:

    為改善燃燒室內(nèi)噴霧的空間分布，增強(qiáng)氣流運(yùn)動(dòng),，促進(jìn)油氣混合,，基于前期研究提出的新型直噴柴油機(jī)渦流室燃燒系統(tǒng)，對(duì)146°,、150°、154°噴孔夾角的3種不同噴油嘴在燃燒室內(nèi)的噴霧,、混合氣形成與燃燒過(guò)程進(jìn)行了數(shù)值模擬,。結(jié)果表明：從燃空當(dāng)量比總體分布來(lái)看，采用146°噴孔夾角時(shí)混合氣最均勻,。燃燒渦流和逆擠流對(duì)速燃期的燃燒室內(nèi)溫度分布有較大的影響,。154°噴孔夾角的NO排放量最低,，而146°噴孔夾角的碳煙排放量最低。綜合來(lái)看,，150°噴孔夾角有較好的排放性能,。

    Abstract:

    In order to improve the particle spatial distribution, promote the mixing of oil and gas, and enhance airflow movement in a combustion chamber, a swirl chamber combustion system in direct injection diesel was investigated. The mixture formation and combustion progress in the combustion chamber were simulated, including different nozzle hole cone angles with 146°, 150° and 154°. The results showed that in view of the fuel/air equivalence ratio distribution, the uniformity of mixture on nozzle hole cone angle of 146°was better than others. The combustion swirl and anti-squish swirl have effect on temperature distribution in the combustion chamber. NO emission was lowest with nozzle hole cone angle of 154°, while soot emission was lowest with nozzle hole cone angle of 146°. The emission performance was better than others with nozzle hole cone angle of 150°.

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魏勝利,王忠,毛功平,倪培永.不同噴孔夾角的直噴柴油機(jī)渦流室燃燒系統(tǒng)性能分析[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2012,43(11):15-20. Wei Shengli, Wang Zhong, Mao Gongping, Ni Peiyong. Influence of Nozzle Hole Cone Angle on Swirl Chamber Combustion System in Direct Injection Diesel[J]. Transactions of the Chinese Society for Agricultural Machinery,2012,43(11):15-20.

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  • 在線發(fā)布日期: 2012-11-16
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