Investigation and Simulation of CNG Bus Emissions Based on Real-World Emission Measurement

作     者：Lijun Hao Chunxiao Hao Taihua Qiu Hang Yin Jianwei Tan Xin Wang Yunshan Ge 

作者机构：School of Mechanical EngineeringBeijing Institute of TechnologyBeijing 100081China Chinese Research Academy of Environmental SciencesBeijing 100012China 

出 版 物：《Journal of Beijing Institute of Technology》 (北京理工大学学报（英文版）)

年 卷 期：2019年第28卷第2期

页      面：198-208页

核心收录：

学科分类：0810[工学-信息与通信工程] 083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：Supported by the National Key Research and Development Plan(2016YFC0208005) the National Natural Science Foundation of China(51576016) 

主　　题：compressed natural gas(CNG)bus vehicle emission fuel consumption instantaneous emission model vehicle specific power portable emissions measurement system(PEMS) 

摘      要：The regulated gaseous emissions from 2 China-V compressed natural gas(CNG)buses and 2 China-V diesel buses were investigated using a portable emissions measurement system(PEMS)under real road driving *** to diesel buses,CNG buses emit less NOx pollutants,but more HC and CO pollutants based on the test results obtained in this *** order to evaluate the pollutant emission status of CNG buses in Beijing,an instantaneous emission model as a function of vehicle speed and vehicle specific power(VSP)was developed and validated based on emission data taken from one CNG *** input of the instantaneous emission model consists of driving cycle,vehicle parameters,road conditions,ambient conditions and accessory use,all of which were used to calculate the instantaneous vehicle specific power(VSP).For the core model,a group of pollutant emission maps represented as functions of vehicle speed and VSP were used to calculate the second by second emission ***,the instantaneous emission rates,emission factors and fuel consumption over the selected driving cycle could be obtained as the model *** predicted results for the emissions and fuel consumption of the CNG bus were very close to the tested emission *** prediction errors for emission factors and fuel consumption varied in the range of-1.6 2%to-5.8%.