论文部分内容阅读
在早期的柴油机燃烧放热率计算中,把气缸内空间作为具有均匀油气混合物的单一区域对待,即所谓“单区模型”,其主要不足之处在于不能对气缸内状况作出具体描述,例如高负荷时气缸内存在局部缺氧的燃烧放热情况得不到反映。因此,格里格(Grigg)和怀特豪斯(Whitehouse)等人提出了“两区模型”。后者在中速无涡流机型上进行了研究,后来又考虑到涡流空气的影响,进行了试验和计算的对比分析,于1975年发表了有关论文。
In the early calculations of diesel engine combustion heat release rates, treating the cylinder space as a single zone with a homogeneous mixture of hydrocarbons, the so-called “single zone model”, has the main disadvantage of not being able to specify a cylinder condition such as a high When the load is present in the cylinder, there is no reflection of the local hypoxia combustion heat release. Therefore, Grigg and Whitehouse et al. Proposed a “two-zone model.” The latter was studied on a medium-speed vortex-free model and later on the influence of vortex air. A comparative analysis of tests and calculations was carried out and the paper was published in 1975.