A parametric study on the performance parameters of a twin-spark SI engine
A parametric study on the performance parameters of a twin-spark SI engine
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DOI：
10.1016/j.enconman.2009.04.025
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发表时间：
2009-08
影响因子：
10.4
通讯作者：
İsmail Altın;Atilla Bilgin
中科院分区：
文献类型：
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作者：
İsmail Altın;Atilla Bilgin
采用火花点火发动机循环模型，研究了火花塞位置对双火花塞发动机性能的影响。采用双区准维燃烧模型，采用球面发展火焰传播假设。构造的仿真可用于单火花塞或双火花塞配置。对于双火花布置，认为火花塞在气缸盖上轴对称地径向相对布置。根据气缸中心到气缸盖火花塞位置的无量纲距离，RSD=Rs/R，考虑了5个位置(RSD=0、0.25、0.50、0.75和1.0)。不可避免地，RSD=0对应于插头位于中心的单火花布置。作为比较，单火花塞配置也被考虑用于其他选定的火花塞位置。研究结果表明，单火花塞布置在中心位置时，发动机的性能和经济性最好，而远离中心位置的其他位置的双火花塞布置则有利于单火花塞布置。
A spark-ignition (SI) engine cycle model was used to study the effects of spark plug location on a twin-spark plug SI engine performance. A two-zone quasi-dimensional combustion model with a spherically developing flame propagation assumption was applied. Constructed simulation can be used for either single- or twin-spark plug configuration. For the twin-spark arrangement, spark plugs were considered to be located diametrically opposite to each other on cylinder head axisymmetrically. According to dimensionless distance from the cylinder center to spark plug location on cylinder head, rsd=rs/R, five locations (rsd=0,0.25,0.50,0.75, and 1.0) were considered. Inevitably rsd=0 corresponds to the single- spark arrangement that the plug is located at the center. To comparison, single-spark plug configurations were also considered for other selected spark plug locations. From the result of the study it was found that centrally located single-spark plug arrangement gives the best engine performance and fuel economy, while for the all the other spark-plug locations away from the center twin-spark arrangement favorable to the single-spark plug configuration.