| 利用废气再循环与米勒循环提高氢内燃机压缩比的研究 |
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| 引用本文： | 郝嘉田,孙柏刚.利用废气再循环与米勒循环提高氢内燃机压缩比的研究[J].内燃机工程,2021,42(5):52-59. |
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| 作者姓名： | 郝嘉田 孙柏刚 |
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| 作者单位： | 北京理工大学 机械与车辆学院，北京 100081 |
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| 摘 要： | 建立了氢内燃机一维模型,分别仿真分析了废气再循环(exhaust gas recirculation,EGR)技术和米勒循环技术对抑制爆震及氮氧化物(NO_x)排放的效果,最后结合两种技术探索了可达到的最大压缩比和最好的NO_x排放性能。结果显示EGR技术对抑制NO_x排放更有效,米勒循环对抑制爆震更有效,最终在本研究的工况下,可以将内燃机的压缩比从10.0提升到18.4,指示热效率提升了8.0%,达到了44.87%,同时NO_x排放减少了26.2%,达到了1.937g/(kW·h)。
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| 关 键 词： | 氢内燃机 废气再循环技术 米勒循环 NOx排放 爆震 仿真模拟 |
| 收稿时间： | 2021/3/23 0:00:00 |
| 修稿时间： | 2021/5/1 0:00:00 |
Research on Improving the Compression Ratio of Hydrogen Internal Combustion Engines by Using Exhaust Gas Recirculation and Miller Cycle |
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| HAO Jiatian and SUN Baigang.Research on Improving the Compression Ratio of Hydrogen Internal Combustion Engines by Using Exhaust Gas Recirculation and Miller Cycle[J].Chinese Internal Combustion Engine Engineering,2021,42(5):52-59. |
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| Authors: | HAO Jiatian and SUN Baigang |
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| Affiliation: | School of Mechanical Engineering,Beijing Institute of Technology,School of Mechanical Engineering,Beijing Institute of Technology |
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| Abstract: | A one-dimensional model of a hydrogen internal combustion engine was built, and the effects of exhaust gas recirculation technology(EGR) and Miller cycle technology on the suppression of knocking and nitrogen oxides(NOx) generation were simulated and analyzed. At last, these technologies were combined to explore the maximum achievable compression ratio and the best NOx emission performance. The results show that EGR technology is more effective in suppressing NOx production, while the Miller cycle is more effective in suppressing knocking. Finally, the compression ratio of the internal combustion engine can be increased from 10.0 to 18.4. The efficiency is reduced by 8.0% to 44.87%. And the NOx emissions are reduced by 26.2% to 1.937g/(kW·h) at the same time. |
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| Keywords: | hydrogen internal combustion engine exhaust gas recirculation Miller cycle NOx emission knock simulation |
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