非四自吸柴油机高海拔碳烟排放特性研究  

Experimental Study on Non Road Phase IV Self Priming Diesel Engines Carbon Smoke Emission Characteristics at High Altitude

作　　者：曾夏寒 张双付 候春元 李瑞 王贵龙 Zeng Xia-han;Zhang Shuang-fu;Hou Chun-yuan;Li Rui;Wang Gui-long(CATARC Automotive Test Center(Kunming)Co.,Ltd.,Yunnan Kunming 651701)

机构地区：[1]中汽研汽车检验中心(昆明)有限公司,云南昆明651701

出　　处：《内燃机与配件》2023年第17期4-6,共3页Internal Combustion Engine & Parts

摘　　要：基于高原进排气海拔模拟系统,针对非四自吸柴油机开展变海拔的碳烟排放差异性研究,并分析高海拔碳烟排放差异的影响因素。研究表明,随着海拔的增加,柴油机碳烟排放降低,主要与高原进气量不足而降低供油量以实现低排放的标定策略相关;随着海拔的增加,柴油机的进气量、供油量与喷油提前角均降低,降幅速率约为10%/1000m, 4000m海拔的供油参数较平原的降幅超过35%;非道路移动机械因其作业的特殊性,其实际运行工况多集中于中间转速与额定转速下,该发动机相同负荷的碳烟排放相近,但额定转速下的碳烟排放较中间转速高。Based on the altitude simulation system for plateau intake and exhaust,a study was conducted on the differences in carbon smoke emissions at different altitudes for non-road phase IV self-priming diesel engines,and the influencing factors of the differences in carbon smoke emissions at high altitudes were analysed.The research has shown that with increasing altitude,the carbon smoke emissions of diesel engines decrease,which is mainly related to the calibration strategy of reducing the fuel supply to achieve low emissions due to insufficient intake at high altitudes;with increasing altitude,the intake volume,fuel supply volume and fuel injection advance angle of the diesel engine all decrease,with a decrease rate of about 10%/1000m.The fuel supply parameters at an altitude of 4000m decrease by more than 35%compared to the plain;due to the special nature of the operation of non-road mobile machinery,its actual operating conditions are mostly concentrated at intermediate and rated speeds.The soot emissions of this engine are similar under the same load,but the soot emissions at rated speed are higher than those at intermediate speed.

关 键 词：非四 柴油机 高海拔 碳烟 排放特性 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]