| 孙山峰，谢辉，耿宗起，左兰，陈秀梅.48V起动发电一体式电机提升发动机排温的试验研究[J].内燃机工程,2021,42(6):17-22. |
| Study on Increasing Exhaust Temperature by Using 48V Belt-Driven Starter Generator |
| DOI：10.13949/j.cnki.nrjgc.2021.06.003 |
| Key Words:belt-driven starter generator(BSG) engine exhaust temperature selective catalyst reduction（SCR） light-off temperature |
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| Abstract:Based on the starter and generator function of 48V belt-driven starter generator(BSG), the generator function of BSG system was used to increasing engine exhaust temperature during world light-duty test cycle(WLTC). The engine exhaust temperature was increased by increasing the overall engine power while maintaining the same crankshaft output torque. By using the starter function, the engine could be shut off during idle period to keep after-treatment system warm. Finally, the time to reach the temperature of selective catalyst reduction lighting-off was shortened from 780s to 650s, and the timing of urea injection was 130s ahead. Meanwhile, the overall fuel consumption of WLTC was reduced by 2.4% with a slight decrease of state of charge. |
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