Engine Development







Particle emissions from engines vary a lot depending on the type of engine and fuel used. Additional factors including engine load, ECU operation and environmental conditions also have an effect on the emissions.Effects of the different factors on emissions are accurately evaluated through real-time particle measurements taken directly from the engine tailpipe, although regulatory measurements are still commonly made using a CVS tunnel. Engine development measurements are typically made on an engine or chassis dynamometer, but recently the need for on-board vehicle measurements has grown as driving and environmental conditions have been found to have a large effect on particulate emissions. Besides tailpipe emissions, other engine emissions including blow-by gas emissions may have a significant effect on the total particle emissions from an engine.

Particle emissions are commonly reduced using different after-treatment devices such as DPFs (Diesel Particulate Filters) and catalysts which are used to also reduce other emissions from engines. Besides on-road and off-road vehicles, interest in characterizing particulate emissions from other types of engines including marine engines and aircraft turbines is continually growing.



Dekati® measurement solutions for determination of particulate emissions from engines include both particle detection and sample conditioning solutions that allow measurements from:

  • On-road and off-road engines both before and after exhaust after treatment devices
  • Both dynamometer and on-board conditions
  • CVS and tailpipe conditions
  • Marine engines
  • Aircraft engines
  • Blow-by gas emissions


Dekati® measurement solutions include: