| 摘要:基于某电控柴油机研究喷油正时对喷油规律、缸内燃烧放热规律及整机性能的影响。分析表明：喷油正时对油管压力影响较小，对喷油器启喷压力影响显著；在一定范围内喷油正时的变化对柴油机各项性能均有稳定、有限的影响，其中对碳烟、NOx排放的影响最为明显。确定合理的喷油正时应兼顾整机的排放性能及常用工况的燃油经济性。 |
| 关键词: 柴油机 喷油正时 燃烧 放热 性能 |
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| Influence of Injection Timing on Performance of Electronically Controlled Diesel Engine |
| ZHENG Chunbing,WANG Junping,SANG Dequan,JIANG Weibo,HAN Guiyang |
| Qingdao First Military Representative Office of Navy，Qingdao 266001，China;CNPC Jichai Power Co.，Ltd.，Jinan 250306，China |
| Abstract:Based on an electronically controlled diesel engine，the effects of fuel injection timing on fuel injection law，in-cylinder combustion heat release law and overall performance are studied.The analysis shows that：The injection timing has little effect on the oil pipe pressure and has a significant effect on the starting pressure of the injector；Within a certain range，the change of injection timing has a stable and limited impact on the performance of diesel engine，especially on soot and NOx emission.Reasonable fuel injection timing should take into account the emission performance of the whole engine and the fuel economy under common working conditions. |
| Key words: diesel engine injection timing combustion heat release performance |
