Performance and engine-out emissions evaluation of the double injection strategy applied to the gasoline partially premixed compression ignition spark assisted combustion concept
Performance and engine-out emissions evaluation of the double injection strategy applied to the gasoline partially premixed compression ignition spark assisted combustion concept
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DOI：
10.1016/j.apenergy.2014.08.008
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发表时间：
2014-12
期刊：
影响因子：
11.2
通讯作者：
J. Benajes;S. Molina;Antonio García;J. Monsalve-Serrano;R. Durrett
中科院分区：
文献类型：
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作者：
J. Benajes;S. Molina;Antonio García;J. Monsalve-Serrano;R. Durrett
火花助燃与单次和双次喷射操作相结合应用于以汽油为燃料的压燃式发动机时，已被发现可以改善燃烧控制。以前的工作已经验证了双喷射策略应用于汽油火花辅助部分预混压燃燃烧(PPC)概念的潜力。目前的研究展示了使用双喷射策略和火花辅助PPC概念的性能和发动机排放结果，并展示了其与单喷射策略相比的优势。为此，在一台改装了包括火花塞的气缸盖的高速单缸柴油机上进行了燃用汽油的参数研究。在双喷试验中改变的参数包括：喷油正时、停留时间、燃油质量在两次喷油之间的分配以及进气氧气浓度。通过一维室内喷雾模型(DICOM)对空气/燃料混合过程进行了详细分析。
Spark assistance has been found to improve combustion control when combined with both single and double injection operation applied to compression ignition (CI) engines using gasoline as the fuel. Previous work has verified the potential of a double injection strategy when applied to the gasoline spark assisted partially premixed compression ignition combustion (PPC) concept. The current research presents performance and engine-out emissions results using a double injection strategy with the spark assisted PPC concept and shows its benefits compared to a single injection strategy. For this purpose, a parametric study was carried out using gasoline in a high-speed single-cylinder diesel engine equipped with a modified cylinder head, which included a spark plug. The parameters that were varied during the double injection testing included: injection timing, dwell, fuel mass split between the injections and intake oxygen concentration. A detailed analysis of the air/fuel mixing process was also conducted by means of a 1-D in-house spray model (DICOM).