Portable emission measurement systems PEMS

The type approval of the engine rather than the complete vehicle introduces difficulties for current and future heavy-duty vehicles, as they are equipped with advanced after-treatment systems. In such cases the complete engine, after-treatment system and electronic control system have to be set-up in the laboratory for type approval to take place. To avoid this complication, type approval of the complete vehicle at the Euro VI level can be performed on the road using portable emission measurement systems (PEMS). Regulation 582/2011 specifies the technical details of the measurement. 

Use of portable emissions measurement systems (PEMS) for validation and development of passenger car emission factors. 18th International Symposium Transport and Air Pollution. May 18-19, 2010, Duebendorf, Switzerland... 

Weiss M, Bonnel P, Kiihlwein J, Provenza A, Lambrecht U, Alessandrini S, Carriero M, Colombo R, Fomi F, Lanappe G, Le Lijour P, Manfredi U, Montigny F, Sculati M (2012) Will Euro 6 reduce the NOX emissions of new diesel cars - Insights from on-road tests with Portable Emissions Measurement Systems (PEMS). Atmos Environ. doi 10.1016/j. atmosenv.2012.08.056... 

---