Abstract
The inspection of heavy duty vehicles using a portable emission measurement system (PEMS) in Europe and America has some problems, which requires a commercial vehicle to be modified for installing PEMS and kept from business for a certain period of time. Because of these problems, in Japan, the introduction of heavy duty vehicle inspection using PEMS is difficult. In this paper, we introduced sensor-based emission measurement system (SEMS) that can capture signals from the NOx sensor, and the CAN of the intake air amount and the fuel injection, and transmit them to digital tachograph. The NOx emission and fuel consumption were calculated from the measurement data of the SEMS, and then we examined the effectiveness of SEMS by comparing those results with those of PEMS.
