摘要
本文介绍了作者研究X2105柴油机微粒排放特性,测量微粒排放总的质量浓度和微粒中固体碳粒和碳氢化合物的百分比含量。其结果表明,微粒排放质量浓度随负荷的变化趋势与通常用的波许烟度值的变化趋势大不相同,微粒中的固体碳粒含量随发动机负荷增大而增加,同波许烟度值有相同的变化趋势,而微粒中的碳氢化合物则随负荷的增加而减少,并受稀释比和混合温度的影响。作者还使用蜂窝陶瓷过滤器过滤排气微粒,并用电加热技术对其进行再生。结果表明,使用过滤器可以过滤绝大多数的微粒,而对发动机经济性影响不大;电加热再生技术是成功的,简单可靠,耗电量少,具有广泛的使用价值。
This paper reports the results of an investigation of the characteristics of particulate emissions from X2105 diesel engine.The total mass concentration of the particulates and the percentages of carbon andhydrocarbon containing in the particulates were measured.It was foundthat the carbon content in the particulates increases with the load of theengine,while the hydrocarbon content in the particulates decreaseswith the engine load and depends upon the dilution radio and the mixingtemperature.The results also show that the carbon content in theparticulates varies with the engine operating conditions in the similarmanner as that of the Bosch Value,but the total mass concentration ofthe particulates changes in a quite different way. In addition,the author used a honeycomb ceramic trap to filter theparticulates and investigated the electrical regeneration behavior of thetrap.The experimantal results show that a large amount of particulatescan be filtered off through the trap and has not much effect on heengine fuel economy provided that the electrical regeneration technique isapplied.The latter is simple,reliable and consuming not much electricalpower.
出处
《内燃机学报》
EI
CAS
CSCD
北大核心
1990年第4期337-343,共7页
Transactions of Csice
基金
国家自然科学基金委员会资助
