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Impact of intermediate ethanol blends on particulate matter emission from a spark ignition direct injection (SIDI) engine

机译：中间乙醇混合物对火花直喷（SIDI）发动机颗粒物排放的影响

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The purpose of this study was to investigate particle emission characteristics from a spark ignition direct injection (SIDI) engine fueled with ethanol-gasoline blends. Particulate matter (PM) from internal combustion engine is a complex mixture of substances deemed harmful for the human body. Consequently, they are regulated by stringent legislation. According to the Euro-6 regulation, the standard for particle number (PN) emissions of SIDI vehicles is 6.0 x 10(11) N/km. Recent studies have reported that SIDI engines, renowned for their feasibility in reducing CO2 emissions, could produce excessive amounts of PM due to its structural characteristics. For this reason, there have been many studies on reducing PM emissions from SIDI engines to satisfy strict emission standards. Because ethanol contains an oxygen atom in each molecule, it has a significant influence on combustion performance and characteristics of vehicular discharge, including PM. This study focused on the effect of intermediate ethanol blends from E0 (pure gasoline fuel) to E20 (gasoline fuel with 20% volume of ethanol) on engine performance, size-resolved particle emissions, and engine startability. Particle emission characteristics including particle number and size distribution at part-load test and start performance were investigated with operation points, fuel pressure and injection timing. (C) 2015 Elsevier Ltd. All rights reserved.
机译：这项研究的目的是研究由乙醇汽油混合燃料驱动的火花直喷（SIDI）发动机的颗粒排放特性。内燃机中的颗粒物（PM）是被认为对人体有害的物质的复杂混合物。因此，它们受到严格立法的管制。根据Euro-6法规，SIDI车辆的颗粒物（PN）排放标准为6.0 x 10（11）N / km。最近的研究报告称，SIDI发动机以减少二氧化碳排放的可行性着称，由于其结构特点，可能会产生过量的PM。为此，已经进行了许多研究以减少SIDI发动机的PM排放以满足严格的排放标准。因为乙醇在每个分子中都含有一个氧原子，所以它对燃烧性能和包括PM在内的车辆放电特性具有重大影响。这项研究的重点是从E0（纯汽油燃料）到E20（乙醇含量为20％的汽油燃料）的中间乙醇混合物对发动机性能，尺寸分辨颗粒排放和发动机启动性的影响。通过工作点，燃油压力和喷射正时，研究了颗粒排放特性，包括部分负载测试时的颗粒数量和尺寸分布以及启动性能。 （C）2015 Elsevier Ltd.保留所有权利。

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