A Study on Emission Measurement Method by Using Intermittent Sampling for Real Driving Emissions of Gasoline Passenger Vehicles, Including Hybrid Electric Vehicles and Plug-in Hybrid Electric Vehicles

Abstract

To estimate the on-road emissions of Light-duty vehicles, Real Driving Emission (RDE) testing method is adopted. Engine operated duration of HEV and PHEV is shorter than that of conventional engine vehicles. At RDE test, we use the Portable Measurement Emissions System (PEMS). Conventional PEMS is continuously sampling emission during the engine-stop. Therefore, it is difficult to measure the correct emissions of HEV and PHEV. In this study, to estimate more correct RDE data, we validated another approach, which operate PEMS by intermittent sampling. As the result, there is a possibility that we obtain the correct RDE data of HEV and PHEV by using this approach.