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共軌柴油機(jī)燃用生物柴油限制與非限制排放特
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of Regulated and Unregulated Emissions of Biodiesel Blends in a Common Rail Diesel Engine
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    摘要:

    在高壓共軌柴油機(jī)上對(duì)生物柴油混合燃料（源自食用廢油）的排放物進(jìn)行了研究,。結(jié)果表明,，限制性氣體排放中,，隨著生物柴油混合比例的增加,，NOx的排放量明顯升高,，同時(shí)在氧化催化器后NOx中的NO2體積分?jǐn)?shù)也逐步增大,；煙度則隨著燃料混合比例的增加呈線性下降,。非限制性氣體排放中,，外特性工況下的生物柴油混合燃料的乙醛排放量隨混合比的增加而降低；SO2氣體排放量也隨著燃料混合比例的增加逐步下降,，純生物柴油可降低20%～60%,。生物柴油的顆粒粒徑分布表明，生物柴油的核態(tài)納米顆粒對(duì)混合燃料的硫含量非常敏感,，由于純生物柴油硫含量低,，故可以有效降低顆粒的總數(shù)量濃度。

    Abstract:

    Characteristics of regulated and unregulated emissions of biodiesel blends（derived from waste oil）in a common rail diesel engine without any modification were investigated. The results showed that NOx emissions increase significantly with a higher blend ratio and NO2 concentration increases after two diesel oxidation catalysts. A linear relationship between the reduction of smoke number and the blend concentration is found. For unregulated gas emissions, MECHO emission is reduced with a higher blend concentration of biodiesel at full load as combustion improvement. Due to low sulfur of biodiesel, the range of SO2 reduction is between 20%～60% for pure biodiesel compared with diesel. Particles in nucleation mode are dominated by the sulfur content of biodiesel blends. Concerning the pure biodiesel, total particle number concentration is reduced due to the lowest sulfur content.

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張旭升,王海濱,趙暉,胡宗杰,吳志軍,李理光.共軌柴油機(jī)燃用生物柴油限制與非限制排放特[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2009,40(8):1-6. of Regulated and Unregulated Emissions of Biodiesel Blends in a Common Rail Diesel Engine[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(8):1-6.

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