Since the introduction of the 'Euro emission limits' back in 1990, to
achieve a steady, but drastic, reduction in trucks emissions -
trucks have been getting cleaner and cleaner.
Exhaust limits, both in Particle Matter and in Nitrogen Oxide have
been reduced considerably over the staged legislation changes.
For example with Particle Matter the 'Euro 4' legislation calls for
just 0.02 g/kWh. at 'Euro 0' this figure was 0.7 g/kWh (some 35
times largerthan Euro 4). With Nitrogen Oxide (NOx) the
reduction figures are just as impressive, for 'Euro 4' trucks must
achieve a 3.5 g/kWh, at 'Euro 0' truck, this figure was 14/4 g/kWh
(That equates to a massive 75% reduction in NOx).
The MAN designers took the view that to meet these onerous
standards, a positive and reliable approach was required to achieve
these emission limits for Euro 4 / Euro 5 and beyond. Their
In 1999 MAN introduced an Exhaust Gas Recirculation (EGR) solution for
Euro 3 trucks. MAN's EGR technology actually recycles a small
percentage of the cooled exhaust gasses back into the engines - to
help reduce the Nitrogen Oxide (NOx) emissions.
SINCE ITS INTRODUCTION MAN's EGR TECHNOLOGY HAS BEEN OPERATING
SUCCESSFULLY IN OVER 400,000 TRUCKS.
To meet the more stringent 'Euro 4' legislation, MAN has further
developed its EGR technology by adding its unique PM-Kat®
- fitted within the trucks silencer box - to help achieve the new
Particle Matter (PM) levels. The PM-Kat®
consists of an oxidation catalyser and a soot particle seperator.
MAINTENANCE FREE, THE MAN PM_KAT®
IS DESIGNED TO LAST THE FULL LIFE OF THE ENGINE.
for more detailed information on EGR
click on the link above...