Abstract Based on the theory of direct relation graph (DRG) and sensitivity analysis (SA), a reduced mechanism for diesel-CH4-H2 tri-fuel is constructed. The detailed mechanism of Lawrence Livermore National Laboratory, which has 654 elements and 2827 elementary reactions, is used for mechanism reduction with DRG. Some small thresholds are used in the process of simplifying the detailed mechanism via DRG, and a skeletal mechanism of 266 elements is obtained. Based on the framework of the skeletal mechanism, the time-consuming approach of sensitivity analysis is used for further simplification, and the skeletal mechanism is reduced to 262 elements. Validation of the reduced mechanism is done via a comparison of ignition delay time and laminar flame speed from the calculation using the reduced mechanism and the detailed mechanism or experiment. The reduced mechanism shows good agreement with the detailed mechanism and with related experimental data.

中文翻译：

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使用具有直接关系图和灵敏度分析的 HCCI 模型构建柴油-天然气-氢气的简化机制

摘要 基于直接关系图（DRG）和灵敏度分析（SA）理论，构建了柴油-CH4-H2三元燃料的简化机理。劳伦斯利弗莫尔国家实验室的详细机理，有 654 个元素和 2827 个元素反应，用于 DRG 的机理还原。在通过DRG简化详细机制的过程中使用了一些小阈值，得到了266个元素的骨架机制。基于骨架机构的框架，采用灵敏度分析的耗时方法进一步简化，将骨架机构减少到262个元素。简化机制的验证是通过比较点火延迟时间和层流火焰速度与使用简化机制的计算和详细机制或实验进行的。