摘要
为研究高原条件下轻型车燃用汽油、天然气时的道路行驶排放特征,参考国六排放法规,在1075、1400、1910 m海拔地区驾驶汽油/天然气双燃料汽车,分别燃用汽油、天然气进行道路排放测试,使用机动车比功率(VSP)分区的方法处理排放数据。结果表明:NO_(x)、CO、CO_(2)排放因子随着海拔降低而下降。NO_(x)排放与排气温度在大部分试验中呈较好的线性相关关系,燃用汽油时的排气温度在高VSP区间升高迅速,使NO_(x)排放高于燃用天然气时的排放。在高海拔条件下,使用天然气作为汽车燃料能够减少NO_(x)排放。各海拔试验中,燃用天然气时的CO、CO_(2)排放因子分别较燃用汽油时平均降低了77.18%、22.32%。海拔越高,燃用天然气的CO_(2)减排效果越明显。
Based on vehicle specific power bin,we conducted real world driving emission experiments and related analyses to describe the emission characteristics of a dual-fuel light-duty vehicle in the plateau environment,which fueled with gasoline and compressed natural gas respectively,and the plateau altitude are 1075 m,1400 m,1910 m.The experimental results showed that the emission factor of NO_(x),CO and CO_(2)decreased with lower height.The NO_(x)emission and exhaust temperature showed good linear relationship.The NO_(x)emission of the vehicle fueled with gasoline were higher than compressed natural gas in higher vehicle specific power range because of exhaust temperature increased rapidly,it led to decrease the NO_(x)emission from vehicle fueled with compressed natural gas in higher altitude.The average decrease of CO and CO_(2)emission factors was 77.18%and 22.32%,which fueled with compressed natural gas and gasoline respectively.The CO_(2)emission reduction effect of vehicle fueled with compressed natural gas is more obvious with higher altitude.
作者
马志磊
何超
刘学渊
李加强
MA Zhilei;HE Chao;LIU Xueyuan;LI Jiaqiang(School Of Machinery and Transportation,Southwest Forestry University,Kunming 650224,China;Key Laboratory of Vehicle Environmental Protection and Safety in Plateau Mountain Area of Yunnan University,Kunming 650224,China)
出处
《重庆理工大学学报（自然科学）》
CAS
北大核心
2022年第1期294-302,共9页
Journal of Chongqing University of Technology：Natural Science
基金
国家自然科学基金项目(51968065)
云南省重大科技项目(2018ZE001)。
关键词
汽油/天然气双燃料汽车
高原道路行驶
排放特性
海拔影响
机动车比功率
gasoline/CNG dual-fuel vehicle
highland road driving
emission characteristics
effect of altitude
vehicle specific power
