Modelling soot formation in a DISI engine
Modelling soot formation in a DISI engine
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模拟 DISI 发动机中的烟灰形成
DOI：
10.1016/j.proci.2010.07.039
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发表时间：
2011
影响因子：
3.4
通讯作者：
Etheridge J
中科院分区：
文献类型：
--
作者：
Etheridge J
本文利用随机反应堆模型(SRM)发动机程序对直喷式火花点火(DISI)发动机的碳烟形成过程进行了数值模拟。计算中考虑了体积变化、对流换热、湍流混合、直接喷射和火焰传播。为了模拟火焰传播，将圆柱体划分为未燃烧、卷吸和燃烧三个区域，卷吸速率用经验公式描述，燃烧用化学动力学模型描述。该模型包含了详细的化学机理和非常详细的碳烟形成模型，但计算时间相对较短。烟尘模型提供了有关烟尘聚集体的形态和化学成分以及体积数量的信息，包括烟尘质量、数密度、体积分数和表面积。该模型首先通过模拟汽油直喷(GDI)火花点火(SI)发动机的试验数据进行了标定。然后，该模型被用于模拟文献中的实验数据，其中检查了1.83L、4缸、4气门生产的直喷式发动机的数量、尺寸和导出的质量颗粒物排放。将不同喷油时刻和不同点火时刻的实验结果与该模型进行了比较，得到的集料粒度分布和排放的定性变化趋势与尾气测量结果吻合较好。
In this work, the formation of soot in a Direct Injection Spark Ignition (DISI) engine is simulated using the Stochastic Reactor Model (SRM) engine code. Volume change, convective heat transfer, turbulent mixing, direct injection and flame propagation are accounted for. In order to simulate flame propagation, the cylinder is divided into an unburned, entrained and burned zone, with the rate of entrainment being governed by empirical equations but combustion modelled with chemical kinetics. The model contains a detailed chemical mechanism as well as a highly detailed soot formation model, however computation times are relatively short. The soot model provides information on the morphology and chemical composition of soot aggregates along with bulk quantities, including soot mass, number density, volume fraction and surface area. The model is first calibrated by simulating experimental data from a Gasoline Direct Injection (GDI) Spark Ignition (SI) engine. The model is then used to simulate experimental data from the literature, where the numbers, sizes and derived mass particulate emissions from a 1.83L, 4-cylinder, 4 valve production DISI engine were examined. Experimental results from different injection and spark timings are compared with the model and the qualitative trends in aggregate size distribution and emissions match the exhaust gas measurements well.
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影响因子：
4.4
作者：
Jonathan E. Etheridge;S. Mosbach;M. Kraft;Hao Wu;N. Collings
通讯作者：
Jonathan E. Etheridge;S. Mosbach;M. Kraft;Hao Wu;N. Collings
火花点火发动机中的湍流火焰结构和速度
DOI：
--
发表时间：
1982
期刊：
影响因子：
--
作者：
J. Keck
通讯作者：
J. Keck
用于 3D 柴油发动机模拟的改进烟灰形成模型
DOI：
10.1115/1.2718234
发表时间：
2005
影响因子：
1.5
作者：
J. Boulanger;Fengshan Liu;W. Neill;G. Smallwood
通讯作者：
G. Smallwood
影响因子：
4.4
作者：
M. Celnik;R. Patterson;M. Kraft;W. Wagner
通讯作者：
M. Celnik;R. Patterson;M. Kraft;W. Wagner
影响因子：
4.4
作者：
A. Raj;M. Celnik;Raphael Shirley;Markus Sander;R. Patterson;R. West;M. Kraft
通讯作者：
A. Raj;M. Celnik;Raphael Shirley;Markus Sander;R. Patterson;R. West;M. Kraft