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首页> 外文期刊>Energy Conversion & Management >Combustion performance and pollutant emissions analysis using diesel/gasoline/iso-butanol blends in a diesel engine
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Combustion performance and pollutant emissions analysis using diesel/gasoline/iso-butanol blends in a diesel engine

机译：在柴油发动机中使用柴油/汽油/异丁醇混合物的燃烧性能和污染物排放分析

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In this study, the effects of diesel/gasoline/iso-butanol blends, including pure diesel (D100), diesel (70%)/-gasoline (30%) (D70G30, by mass), diesel (70%)/iso-butanol (30%) (D70B30) and diesel (70%)/gasoline (15%)/iso-butanol (15%) (D70G15B15), on combustion and exhaust pollutant emissions characteristics in a four-cylinder diesel engine were experimentally investigated under various engine load conditions with a constant speed of 1800 rpm. The results indicated that D70G30, D70G15B15 and D70B30 delayed the ignition timing and shortened the combustion duration compared to D100. Additionally, CA50 was retarded when engine fuelled with D70G30, D70G15B15 and D70B30 at low engine load conditions, but it was advanced at medium and high engine loads. The maximum pressure rise rates (MPRRs) of D70G30, D70G15B15 and D70B30 were increased compared with D100 except for at engine load of 0.13 MPa BMEP (brake mean effective pressure). Meanwhile, D70G15B15 and D70B30 produced higher brake specific fuel consumption (BSFC) than that of D100. The effects of diesel blend with gasoline or iso-butanol on exhaust pollutant emissions were varied with loads. CO emissions were increased obviously and NOx emissions were decreased under low engine loads. However, CO emissions were decreased and NOx emissions were slightly increased under the medium and high engine load conditions. However, D70G30, D70G15B15 and D70B30 leaded to higher HC emissions than D100 regardless the variation of engine load. Moreover, the particulate matter (PM) (diameter, number and mass concentrations) emissions by using D70G30, D70G15B15 and D70B30 were significantly reduced compared to D100, but more small-size particles were produced. (C) 2017 Elsevier Ltd. All rights reserved.
机译：在这项研究中，柴油/汽油/异丁醇混合物的影响，包括纯柴油（D100），柴油（70％）/汽油（30％）（D70G30，按质量计），柴油（70％）/异-丁醇（30％）（D70B30）和柴油（70％）/汽油（15％）/异丁醇（15％）（D70G15B15）对四缸柴油机燃烧和排放污染物排放特性的实验研究恒定转速为1800 rpm的各种发动机负载条件。结果表明，与D100相比，D70G30，D70G15B15和D70B30延迟了点火正时并缩短了燃烧时间。此外，当在低发动机负荷条件下用D70G30，D70G15B15和D70B30发动机供油时，CA50会延迟，但在中，高发动机负荷下会提前。与D100相比，D70G30，D70G15B15和D70B30的最大压力上升率（MPRR）有所增加，但发动机负荷为0.13 MPa BMEP（制动平均有效压力）时除外。同时，D70G15B15和D70B30的制动比油耗（BSFC）比D100高。柴油与汽油或异丁醇混合对废气污染物排放的影响随负载而变化。在低发动机负荷下，CO排放量明显增加，NOx排放量减少。但是，在中等和高发动机负荷条件下，CO排放量减少了，而NOx排放量却略有增加了。但是，无论发动机负载如何变化，D70G30，D70G15B15和D70B30导致的HC排放量均高于D100。此外，与D100相比，使用D70G30，D70G15B15和D70B30排放的颗粒物（PM）（直径，数量和质量浓度）显着降低，但产生的颗粒更多。 （C）2017 Elsevier Ltd.保留所有权利。

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