The combustion process of this diesel engine during main injection and post injection are analyzed in the paper. 分析了主喷射和后喷射时该柴油机燃烧过程。
The objective of post injection is to further optimise the combustion process and thus achieve even lower exhaust emissions. 后喷射的客观事实是极其优化了燃烧过程,取得了更低的废气排放。
Depending on the engine design, revs and load, modern diesel engines use a pilot or double pilot injection, a main injection and a post injection. 依赖发动机设计,转速和负荷,现代柴油机使用一个导向或双导向喷射,一个主喷和一个后喷。
In order to organize the best regionalized combustion, the interval between main injection and post injection should be as small as possible on the premise that oxygen is enough. 要组织最佳的分区燃烧就是要在保证补充氧气足够多的前提下,找到一个尽可能小的主后喷间隔。
But excess post injection would induce fuel consumption increasing and exhaust temperature rising. Therefore the post injection quantity and intervals must be regulated and optimizing carefully. 但过大或过远的后喷会带来油耗率增加和排温上升问题,因此后喷油量和后喷间隔需要严格调整和仔细优化。