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燃油催化微粒捕集器微粒捕集与强制再生特性的研究 被引量:24

A Research on the Filtration and Regeneration of Fuel Borne Catalyst Diesel Particulate Filter of Diesel Engine
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摘要 采用燃油催化再生微粒捕集器,对某排量为7.7 L柴油机的排放微粒进行捕集与强制再生。试验结果表明:在低排温工况下,随着微粒捕集器内微粒不断增加,微粒捕集器两端压差随捕集时间增加呈线性提高。燃油中加入的铁基催化剂可以降低碳粒燃烧的温度,增加微粒捕集器的微粒储备能力,并能够有效再生。当燃油中无添加剂时,在特定工况下发动机运行19.5 h后,微粒捕集器的两端压差达到10 kPa,而有添加剂时则可延长到23.5 h。在排气温度为530℃的强制再生工况下,燃油中有添加剂,约需6 min可全部强制再生累积的微粒,而无添加剂则约用时14 min,且有添加剂时强制再生程度较高。微粒捕集器经500 h耐久试验后,在有添加剂情况下其两端压差达到15 kPa,发动机需在微粒累积工况下运转23 h,无添加剂需要18.5 h。按ESC排放测试,微粒捕集器对微粒的过滤效率达到80%以上,微粒排放为0.017 g/(kW.h),试验结果还发现微粒捕集器对CO、HC及NOx的排放没有影响。 Research on the PM filtration efficiency of a fuel borne catalyst regenerative type diesel particulate filter(FBC-DPF) is conducted,and the effectiveness of fuel borne catalyst(FBC) in a CA6DL1-28 diesel engine is studied.The back-pressure of DPF increases linearly along with accumulation of the particulate matter(PM).Addition of a fe-based fuel borne catalyst in diesel fuel can lower the temperature for soot combustion,and increase the storing capacity of the DPF and have regeneration ability.For the fresh...
出处 《内燃机学报》 EI CAS CSCD 北大核心 2007年第6期527-531,共5页 Transactions of Csice
基金 霍英东教育基金优选资助课题(94016) 天津市科技发展计划项目(05YFJMJC10600)
关键词 柴油机 燃油催化微粒捕集器 微粒排放 强制再生 Diesel engine Fuel borne catalyst regenerative type diesel particulate filter(FBC-DPF) Particulate emission Forced regeneration
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