At the present stage of HCCI technology, the PCCI-DI combustion mode is regarded as an alternative approach by using the partial merits of HCCI engine and extending the operation range of HCCI engine.

• 在目前HCCI发动机没有完全成熟的条件下，PCCI-DI模式是兼顾HCCI燃烧优点，拓宽HCCI发动机运转范围的较为合理的一种燃烧模式。