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 solution:

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...