Experimental study on high altitude real driving emissions of a plug-in hybrid electric vehicle
LIU Wenbin
Abstract：In order to reduce the real driving emissions(RDE)of plug-in hybrid electric vehicle(PHEV)in high-altitude low-temperature boundary environments,a portable emission testing device is used to conduct RDE emission test on a certain PHEV model.Based on the emission test results,the engine control unit and vehicle control unit control strategies are optimized to reduce emissions during cold start and transition conditions,and conduct RDE testing to verify the optimized PHEV.The results show that after optimization,the NOxand PN emissions of the total RDE test decreases by 52.5%and 75.2%,respectively.The NOxand PN emissions of the urban phase decreases by 70.3%and 51.6%,respectively,and the conformity factor of NOxand PN are both lower than 2.1,which meets the requirements of CHINA 6 b.The actual road emissions of PHEV differ significantly from traditional vehicle models,requiring optimization of emissions from multiple operating conditions and controllers to meet environmental standards.
Keywords：high altitudePHEVreal driving emissionNox emissionPN
Publication Date：2023-12-28
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：6( 71-76 )