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首页> 外文会议>ASME(American Society of Mechanical Engineers) Internal Combustion Engine Division Fall Technical Conference; 20071014-17; Charleston,SC(US) >MODELING CYCLIC VARIABILITY IN SPARK-ASSISTED HCCI
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MODELING CYCLIC VARIABILITY IN SPARK-ASSISTED HCCI

机译：模拟空间辅助HCCI中的循环变异性

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摘要

Spark assist appears to offer considerable potential for increasing the speed and load range over which homogeneous charge compression ignition (HCCI) is possible in gasoline engines. Numerous experimental studies of the transition between conventional spark-ignited (SI) propagating-flame combustion and HCCI combustion in gasoline engines with spark assist have demonstrated a high degree of deterministic coupling between successive combustion events. Analysis of this coupling suggests that the transition between SI and HCCI can be described as a sequence of bifurcations in a low-dimensional dynamic map. In this paper we describe methods for utilizing the deterministic relationship between cycles to extract global kinetic rate parameters that can be used to discriminate multiple distinct combustion states and develop a more quantitative understanding of the SI-HCCI transition. We demonstrate the application of these methods for indolene-containing fuels and point out an apparent HCCI mode switching not previously reported. Our results have specific implications for developing dynamic combustion models and feedback control strategies that utilize spark-assist to expand the operating range of HCCI combustion.
机译：火花助力似乎为增加速度和负载范围提供了巨大的潜力，在此范围内，汽油发动机可以进行均质充量压缩点火（HCCI）。在具有火花辅助的汽油发动机中，常规火花点火（SI）传播火焰燃烧与HCCI燃烧之间的过渡的大量实验研究表明，连续燃烧事件之间具有高度确定性的耦合。对这种耦合的分析表明，SI和HCCI之间的过渡可以描述为低维动态图中的分叉序列。在本文中，我们描述了利用循环之间的确定性关系来提取全局动力学速率参数的方法，这些参数可用于区分多个不同的燃烧状态并发展对SI-HCCI过渡的更定量的理解。我们证明了这些方法在含吲哚燃料中的应用，并指出了以前没有报道过的明显的HCCI模式转换。我们的结果对于开发动态火花燃烧模型和反馈控制策略具有特殊意义，该模型利用火花辅助来扩展HCCI燃烧的工作范围。

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