The implementation status of Real Driving Emissions testing

Real world air quality improvements



(PEMS=Portable Emissions Measurement System: 2016 Automotive Engineering Exposition Yokohama)

 Volkswagen’s diesel emissions scandal has resulted in the implementation of Real Driving Emissions (RDE) testing in Europe. A Portable Emissions Measurement System (PEMS) is attached to vehicles, the ambient temperature and driving mode are determined, and the permissible range is regulated with the compliance test value. From September 1, 2017 NOx (nitrogen oxide) will be regulated to below 2.1 times the compliance test value for both diesel and gasoline vehicles in new models. Additionally, on January 1, 2020, the regulation will be tightened to 1.5 times the compliance test value.

 In Japan, the Ministry of Land, Infrastructure, Transport and Tourism is currently studying inspection methods for diesel vehicles, and considering a revision of testing methods by spring 2017. In the U.S., there are four kinds of bench emissions compliance tests. There is also a surveillance system for vehicles currently in use, which RDE testing will supplement if necessary. This report will focus on the contents of the seminar “Considerations of the Effects of Automobiles on Improving Air Quality in the Real World,” which was presented at the Automotive Engineering Exposition 2016 Yokohama, and summarize the background and implementation status of RDE testing.

Related reports:
Evolution of the internal combustion engine
The VW Group and Issues with Diesel Emissions (Part 3)
VW and Diesel Emission Crisis (Part 2)
VW and Diesel Emission Crisis (Part 1)
Volkswagen Group Diesel Emissions Crisis