Technical Paper
On Board Exhaust Emission Measurement on Heavy Duty Vehicles Driven on Alternative Fuels
2012-09-10
2012-01-1705
The present wording of implementing the regulation for type-approval of motor vehicles and engines with respect to emissions from heavy-duty vehicles (e.g., Euro VI requirements) describes the procedure to determine gaseous emissions from on-road measurements using Portable Emissions Measurement Systems (PEMS). Emissions to be measured according to the PEMS protocol are carbon monoxide (CO), total hydrocarbons (HC) nitrogen oxides (NOx) and carbon dioxide (CO₂). Measurement methods of particles will be included in the Euro VI requirements. Emission results from on-road testing can be used for In Service Conformity (ISC) pass/fail criteria but also for establishing emission factors for specific routes and verification of the fuel impact on the emissions.
