Ma injini oyatsira mkati amatulutsa ma nitrogen oxides ambiri.Tekinoloje ya Selective Catalytic Reduction (SCR) ndiyo njira yamphamvu kwambiri kuposa njira zonse zochepetsera ma nitrogen oxides ndipo imatha kuchepetsa utsi mpaka wotsika kwambiri.Pachifukwa ichi, madzi owonjezera (AdBlue) amalowetsedwa mu mzere wotulutsa mpweya pambuyo pa turbocharger ndi nthunzi panjira yopita ku chothandizira.Kumeneko, AdBlue amasintha ma nitrogen oxides pa chothandizira kukhala nayitrogeni ndi madzi, zonse zachilengedwe komanso zopanda poizoni.Kuchuluka kwa metered kwa AdBlue ndi kugawa kwake pa chothandizira kumatsimikizira mphamvu ya dongosololi motsimikiza.
GRVNES imapereka mayankho osiyanasiyana okometsedwa pakugwiritsa ntchito kwake.Monga wopanga ndi wopereka makina onse otulutsa mpweya, makasitomala amapindula ndi zotsatira zomwe zimaganizira za mpweya wonse ndikupereka yankho lopangidwa mwaluso lomwe limagwirizana bwino ndi zofunikira.
