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首页> 外文期刊>Energy Conversion & Management >The effect of rapeseed oil biodiesel fuel on combustion, performance, and the emission formation process within a heavy-duty DI diesel engine
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The effect of rapeseed oil biodiesel fuel on combustion, performance, and the emission formation process within a heavy-duty DI diesel engine

机译：菜籽油生物柴油对重型DI柴油机内燃烧，性能和排放形成过程的影响

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This study presents the influence of biodiesel fuel and blends with mineral diesel fuel on diesel engine performance, the combustion process, and the formation of emissions. The study was conducted numerically and experimentally. The aim of the study was to test the possibility of replacing mineral diesel fuel with biodiesel fuel made from rapeseed oil. Pure biodiesel fuel and three blends of biodiesel fuel with mineral diesel fuel were tested experimentally for that purpose on a heavy-duty bus diesel engine. The engine's performance, in-cylinder pressure, fuel consumption, and the amount of produced NO. and CO emissions were monitored during experimental measurements, which were repeated numerically using the AVL BOOST simulation program. New empirical sub-models are proposed for determining a combustion model and emission models parameters. The proposed sub-models allow the determination of necessary combustion and emission model parameters regarding the properties of the tested fuel and the engine speed. When increasing the percentage of biodiesel fuel within the fuel blends, the reduction in engine torque and brake mean effective pressures are obtained for most of the test regimes. The reduction is caused due to the lower calorific value of the biodiesel fuel. Higher oxygen content in biodiesel fuel contributes to a better oxidation process within the combustion chamber when running on pure biodiesel or its blends. Better oxidation further results in a reduction of the formatted carbon and nitrogen oxides. The reduction of carbon emission is also attributed to the biodiesel fuel's lower carbon content. It can be concluded from the obtained results that neat biodiesel fuel and its blends with mineral diesel fuel can be used in heavy-duty diesel engines with mechanically controlled injection systems as replacements for mineral diesel fuel. The agreement between numerical and experimental results confirms the usability of the proposed sub-model. The sub-models decrease time needed to preform numerical simulations with a reasonable amount of confidence without experimental results. (C) 2015 Elsevier Ltd. All rights reserved.
机译：这项研究提出了生物柴油燃料以及与矿物柴油燃料的混合物对柴油发动机性能，燃烧过程和排放物形成的影响。该研究是通过数值和实验进行的。该研究的目的是测试用菜籽油制成的生物柴油替代矿物柴油的可能性。为此，在重型客车柴油机上对纯生物柴油燃料和生物柴油燃料与矿物柴油的三种混合燃料进行了实验测试。发动机的性能，缸内压力，燃油消耗和产生的NO量。在实验测量期间对CO和CO的排放进行监测，并使用AVL BOOST模拟程序对其进行数值重复。提出了用于确定燃烧模型和排放模型参数的新的经验子模型。提出的子模型允许确定关于测试燃料的特性和发动机转速的必要燃烧和排放模型参数。当增加混合燃料中生物柴油燃料的百分比时，对于大多数测试方案，发动机扭矩和制动平均有效压力都会降低。减少是由于生物柴油燃料的热值较低。当在纯生物柴油或其混合物上运行时，生物柴油燃料中较高的氧含量有助于燃烧室内更好的氧化过程。更好的氧化作用进一步减少了已形成的碳氧化物和氮氧化物。碳排放量的减少也归因于生物柴油燃料的较低碳含量。从获得的结果可以得出结论，纯净的生物柴油燃料及其与矿物柴油燃料的混合物可用于具有机械控制喷射系统的重型柴油发动机，以替代矿物柴油。数值和实验结果之间的一致性证实了所提出子模型的可用性。子模型以合理的可信度减少了进行数值模拟所需的时间，而没有实验结果。 （C）2015 Elsevier Ltd.保留所有权利。

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