NOx (ppm) 800 J f v-� \ 600 400 200 .,_ ,...L-------l..------' o co (%) 0,5 - 0,4 0,3 0,2 0,1 o / / o 2 3 Fig. 2 Exhamt gas analyse.rfor ııcıtttral gas eııgiııe n=2200 RPM x=34 ıııııı3ıcycle 26 \ \ I:Cn Hm \ \ 1 \ V ---,. ---- f.. ,,/ V NOx ,.. V ----------"' \ co \' "' o t---. '-- ' 1 o \ 4 5 6 ? Pe which is subjecc co scandard measurement ac ec c ius r raecliaecse. dT choe ei hn ae cmc ueraascuyr eomf cehni cs adci fcfuerraecny and conversion ofNO co N02 gl ee !ni ni ne . eTh eh ee xmheaaussuc rsecmr eeanmt oi sf Na nO i o n c x h e h e a e r n m d sa o n e ı ı a -.- p n ys ot efsd. Ne c eOr xmfirnoi mn gs Nr a cOi oxn aerxyh ai nutsec renma l i scsoimo n b u ra s tion engines b N c e O n c x r a c c i o o n n c s e . n - T c a r h s a e e t d i o s on r n a c n c o d h ae rs ed croer rqeucicreecdl c oe hne be correcced co a N co O nscant o xygen concentration. The raw l c u e c n i c o x o n c x . o y Tn g h c e e i n s n a c m r s a s e u c t i h m o o n e d s a d c f o o ı r x e r e s e dc n c o a e t m d r o ce u o q nu 1 c i 5 r o e f p e d e h r i e ac ec nc uc raanc ed mNeOa sxu ri enme ehnec eoxfheahues ro. x Ay gl cehnocuognh oc hni sr amc eesc hoor df oi sr oa f b ı iaos ev lai lnuee ef mo r i ms s iaos ns ei mn vi se sni choordy , ci co d do ee smpor no vs ci dr aec ae r ee xl ahc ai vueslcy eeams yi sms i eocn compliance for individual scack ring and eliminaces ehe possib cing ehe ex hausc co accain scan il d ic a y r m d o s o f [ n d 2 i i c l } u o . 3. REDUCTION OF NOx EM iSSi ONS uCsrti cei cma il svs iaol nu se sa roef Nn aOc uxr aalngd aCs Oe n. gNi noersme a x l h l a y, imn ec ar seua rsees oc of ar ei rd ue xc ec ee shse wNoOuxl de mi ni cs sr ieoans se ee .hge. f g C u i O n ll a l e l o m a a d dis js i u n io s n c n m a a t e n u n d ra c v ! g i g c i a e v s i v e n e n g r g sa a in n . e W a fo i i r c r h e r x e e d c h e u e s c s oi n r a i g t eNxOc exs se me hi es s vi oanl us .e sWdheevne l oi npcerde a se ihneg aedhjeu as ci r fmuernt hc eur s eodp edrua cr ii on ng . c eUs nc fwo rarsuandaoc pe ltye,d efhoer wemerisesiloenssvfaalvuoeus rma easurecl in diesel mode ble. At full load NOx deme.ission decreasecl 2 % in natura! gas moFr ai !gg. a1 s Sehnogwi nse ewxh i tahu es xt cgeasss aa ni ra. l Fy si ge f2o. rSnhaotwu s w eis x ih c c l h a e u c r r s e e c c l a g u s a c e s e d d a w n e a x i l c c y h e s se e s x f a o c i r r e .s n s V a a t a u i r r r i . a a c! W i o g n ae s o c e f a n N n g O sin e x e e funccion of excess air ratio wich compressi- 011 ratio in Fig. 3. sMe de cahnodd sl ios cfeNc l Oi nx cehmi si sps iaopne rc. oNn çOr o l c l i s c u s x concrol mechods can be divicled inco cacagories b sf eocrl oa pn pt lhi ec iarc icounr r ec on c ns ac ac uc er aolf gc l ea vs eel onpgmi neenasc . MhoodsscebofatehhaevNe bOexe ne imn vi sessicoi gn acc eodn carnodl dmees ct riba ed. For moclerace NOx reduccion upco b ( one 30 percenc chere are many opcions (3), [4)). e F In m or j i e s e c s h t i e o io n s n p s, e o w c f i a f w ı c c e a r p t a u e c r r l p d : o i csieo on fcroe de huec i inngl eNt aOi rx. Lmoendgc-hc ae cr ms u. cs he rwv iaccee rea x dpcel irciieonnc he ahs ans oc ho anrfmi r - 1 ı_ �I ' - l 1 -- -- - ı1 � 1 - - � - ,c -a -- - -
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