An investigation into propane homogeneous charge compression ignition (HCCI) engine operation with residual gas trapping
An investigation into propane homogeneous charge compression ignition (HCCI) engine operation with residual gas trapping
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DOI：
10.1016/j.fuel.2005.05.008
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发表时间：
2005-12
期刊：
影响因子：
7.4
通讯作者：
D. Yap;J. Karlovsky;A. Megaritis;M. Wyszyński;Hongming Xu
中科院分区：
文献类型：
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作者：
D. Yap;J. Karlovsky;A. Megaritis;M. Wyszyński;Hongming Xu
丙烷在商业上可用于传统内燃机，作为汽油的替代燃料。然而，在发展中的均质装药压缩点火（HCCI）发动机中，它的应用需要各种方法，如高压缩比和/或进口装药加热来实现自动点火。这里记录的方法利用内部残余气体的捕获（如以前在汽油控制的自动点火发动机中使用的），以降低自动点火过程的热要求。在目前的工作中，在发动机压缩比适中的情况下，发动机可达到的负荷范围由废气的内部捕获程度来控制，并辅以进气加热。压缩比的增加降低了进口温度要求；然而，它也导致了更高的压力上升速率。改变进气门正时会影响燃烧相位，这有助于降低最大压力上升率。由于均质燃烧的性质，氮氧化物排放的特点是低。
Propane is available commercially for use in conventional internal combustion engines as an alternative fuel for gasoline. However, its application in the developing homogeneous charge compression ignition (HCCI) engines requires various approaches such as high compression ratios and/or inlet charge heating to achieve auto ignition. The approach documented here utilizes the trapping of internal residual gas (as used before in gasoline controlled auto ignition engines), to lower the thermal requirements for the auto ignition process. In the present work, with a moderate engine compression ratio the achievable engine load range was controlled by the degree of internal trapping of exhaust gas supplemented by inlet charge heating. Increasing the compression ratio decreased the inlet temperature requirements; however, it also resulted in higher pressure rise rates. Varying the inlet valve timing affects the combustion phasing which can help to decrease the maximum pressure rise rates. NOx emissions were characteristically low due to the nature of homogeneous combustion.