Pegasor technology delivers robust measurements for next generation Periodic Technical Inspection


A study led by Vrije Universiteit Brussel tested various candidates to find feasible technologies for the next generation Periodic Technical Inspection for Particle Number limits (PN-PTI). New test methods for diesel vehicle soot emission inspection are badly needed, as modern engines produce soot in particle size that current opacimeter technology cannot detect, even from a vehicle with completely removed particulate filter. The highlights of the study are the extreme reliability of the Pegasor Mi3 used in the study and significant fleet emission reductions available through PN-PTI (30-fold total fleet reduction by repairing 15% of fleet with faulty filters).

Boveroux, F., Cassiers, S., Buekenhoudt, P., Chavatte, L. et al., “Feasibility Study of a New Test Procedure to Identify High Emitters of Particulate Matter during Periodic Technical Inspection,” SAE Technical Paper 2019-01-1190, 2019, doi:10.4271/2019-01-1190.

A study is available at SAE