Emission Characteristics of Methanol Extended-Range Engine Based on China Ⅵ Regulation Conditions

LIU Bing; WU Di; ZHANG Chao; XIONG Weidong; YAN Shaofeng

doi:10.3969/j.issn.1001-2222.2023.04.007

Vehicle Engine ›› 2023, Vol. 0 ›› Issue (4) : 42-46. DOI: 10.3969/j.issn.1001-2222.2023.04.007

Emission Characteristics of Methanol Extended-Range Engine Based on China Ⅵ Regulation Conditions

LIU Bing¹,WU Di¹,ZHANG Chao¹,XIONG Weidong¹,YAN Shaofeng²

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Abstract

For a China Ⅵ methanol extendedrange engine, the emission measurement system was built and the China Ⅵ cold and hot WHTC test for heavyduty vehicle was carried out, and theN₂O and NH₃ emission characteristics were researched. The results show that the N₂O and NH₃ emission of original engine is extremely low, but will greatly increase after using the three-way catalytic aftertreatment system. In WHTC cycle, the high N₂O emission concentrates in the low temperature stage of about 400 ℃ exhaust temperature and reaches the peak when the speed changes from high to low, while there is little N₂O emission in the high temperature stage. NH₃ emission mainly concentrates in the temperature range of 500~550 ℃ and becomes rare in the temperature section below 500 ℃ and above 550 ℃.Besides, the cycle average NH₃ emission in the hot state is significantly higher than that in the cold state.

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nitrous oxide / ammonia / methanol engine

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LIU Bing,WU Di,ZHANG Chao,XIONG Weidong,YAN Shaofeng. Emission Characteristics of Methanol Extended-Range Engine Based on China Ⅵ Regulation Conditions[J]. Vehicle Engine. 2023, 0(4): 42-46 https://doi.org/10.3969/j.issn.1001-2222.2023.04.007