| 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. |
| Research on Improving the Compression Ratio of Hydrogen Internal Combustion Engines by Using Exhaust Gas Recirculation and Miller Cycle |
| DOI：10.13949/j.cnki.nrjgc.2021.05.008 |
| Key Words:hydrogen internal combustion engine exhaust gas recirculation Miller cycle NOx emission knock simulation |
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| Abstract:A one-dimensional model of 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 two 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 to 18.4, the efficiency is 44.87%, which is increased by 8.0%, and NOx emissions are reduced to 1.937 g?(kW·h)-1 at the same time, which is reduced by 26.2%. |
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