On-Board Emissions Measurement System OBS-ONE Series

By: Yoshinori OTSUKI, Shintaro AOKI, Kenji KONDO

21 February 2017

Figure 2 Installation of PEMS on the vehicle

Reduction in pollutants such as particulate matter and nitrogen dioxide in the environment is behind the schedule in spite of repeated reinforcement of emission regulations. Because it is pointed out that there is the difference between real driving emissions (RDE) on the road and emissions during regulatory defined test cycles in test laboratories, emission measurement during real driving conditions is attracting attention. Introduction to regulatory defined measurement procedures of the portable emissions measurement system (PEMS) which can determine vehicle emission on the road is currently scheduled. In order to meet such requirements from on-board emissions measurement markets timely, OBS-ONE series has been developed. The concept and technical outline of OBS-ONE series will be introduced. Examples of application to RDE measurement will be explained as well.

Note: Full paper of the same content in Japanese is in Readout No.46-Japanese edition.