The Research Of The Emission Characteristics And The Development Of Light Vehicles Meet The ? Stage Of Emission Standards

Due to the increasing air pollution of environment,the problem of motor vehicle pollution has attracted more and more attention.The driving cycle has a significant impact on the emission of the vehicle.The significance of driving cycle research is practical and profound.The correlation research of different driving cycles in the background of development of vehicle emission standards could not only provide some basic information for the research of emission standards,but also provide some technical support for the company's own development.Therefore,this article take the research of different driving circles applicable to Chinese road as the main object,aims to the develop new vehicles meet the ? emission standards,which has profound significance and practical values.The commercial vehicles in good condition with different configurations in the sale are selected to carry out the comparative emission test.Make sure that the test vehicle is in good condition,the equipment conditions meet the requirements,the standard material and the driver keep consistent.Summarize the correlation relationship of FTP-75,WLTC and NEDC circles by analyzing the results of the emission test.Analyze the reasons for the CO,THC,NOx emission difference from different aspects,including the of vehicle speed,calculation formulas,etc.through the experimental modal data and the OBD data of the vehicle.That can provide data support for the development of the ? vehicle emission standards.Finally,provide an improve program for FTP-75 and WLTC circles on the catalyst of the vehicle on the basis of the vehicle test results and the actual verification results,which can actively respond to the ? emission standards from a business perspective.