Measurements


EXIS AB offers different types of measurement services 


  • Vehicles (on- and off-roads)
  • Marine (engines and vessels)
  • Real Driving Emissions (RDE, PEMS)
  • Dyno-test (engines and vehicles)
  • Particle and aerosol measurements


With our own resources and in collaboration with other selected companies, we can provide several types of tests.


Take a look at our Gothenburg test route for RDE. The route is 87 km long and in accordance with regulation (EC) No 692/2008---Euro 6. This route can be found as an approved RDE route in KBA:s database


PEMS Route-Gothenburg (video)

Measurement reports


March 2021: Real Driving Emission in Copenhagen - Download


Real driving exhaust gas emissions from trucks and vans when engine is cooling off in urban areas


On behalf of Ministry of Environment of Denmark – Environmental Protection Agency, EXIS together with ECM and Applus Denmark, have carried out a project named Real driving exhaust gas emissions from trucks and vans when engine is cooling off in urban areas.


The main questions to which this work would provide answers were:


  • Assess real driving emissions from vehicles delivering goods in urban areas
  • Find out under which conditions the SCR-system (aftertreatment system for reducing NOx emissions) is functioning and not functioning with respect to engine load, engine temperature, SCR-efficiency, driving condition, outdoor temperature, and load/weight of the vehicle


May 2021: SEMS equipment in connection with periodic technical inspections (PTI) of lorries


On behalf of Færdselsstyrelsen, Denmark, EXIS together with ECM and Applus Denmark have carried out a project named “SEMS equipment in connection with periodic technical inspections (PTI) of lorries”


The main question to which this work would provide answers was if SEMS equipment could be a useful toolfor PTI on heavy-duty vehicles. This study clearly show that the answer is “Yes”. The study also shows that the use of NOx Index is a powerful measure to use in this case and it´s highly effective in finding vehicles with
problems (high emitters) as well as manipulated vehicles. For example, cheating with urea supply is very easily detected.


In this study, 26 Heavy duty trucks have been tested with respect to NOx emission and the function of exhaust gas aftertreatment system. All tests, except one, have been performed at the Applus Denmark PTI station in Kolding (Nord).


It is possible to integrate this test procedure and tools in the regular PTI process. It took roughly about 10-20 minutes per vehicle to carry out the test, including mounting of the test equipment, driving the test route and de-mounting the test equipment.


The main concept for the tests in this study has been based on doing an arbitrary and short test route (~4km) in connection to the PTI station and in combination with measuring the NOx Index using a PEMS-system named EZ-PEMS from ECM. The big advantage of this concept is that it can be implemented at any PTI station with low investment cost and that it is fast and accurate. With this concept it does not matter so much what the test route looks like in terms of speed and elevations and therefore supports the idea behind measuring RDE in an efficient way. Prior to all tests, the vehicles were driven so they reached a fully warmedup aftertreatment system.