Diesel ane SCR. Vachakonzera matambudziko here?
Diesel injini dzine zvakawanda uye zvakawanda zvekushandisa. Turbocharger, aftercooler uye diesel particulate sefa zvatove standard. Ikozvino kune SCR sefa.
BlueHDI, BlueTEC, SCR Blue Motion Technology angori mamwe emakamaka achangobva kubuda pamotokari dzedhiziri. Zvinonzi motokari dzakashongedzerwa neSCR (Selective Catalytic Reduction) system, i.e. Iva nekuiswa kwakakosha kwekubvisa nitrogen oxides kubva kumagasi emhepo, umo iyo catalyst ndiyo ammonia inounzwa muchimiro chemvura urea solution (AdBlue). . Iyo sisitimu inoramba iri kunze kweinjini, imwe yakavakirwa mukati memuviri (magetsi controller, sensors, tanki, pombi, AdBlue yekuzadza system, mitsara yekupa mvura kumuromo) uye chikamu mune exhaust system (fluid nozzle, catalytic module, nitrogen oxides). sensor). Dhata kubva kuhurongwa inodyiswa mukati memotokari yekuongorora hurongwa, iyo inobvumira mutyairi kugamuchira ruzivo pamusoro pekudiwa kwekuzadza mvura uye zvinogona kukanganisa kweSCR system.
Kushanda kweSCR kuri nyore. Iyo jekiseni inosuma iyo urea mhinduro mu exhaust system pamberi peiyo SCR catalyst. Pasi pesimba rekushisa kwepamusoro, mvura inoparara kuita ammonia uye carbon dioxide. Mune inokonzeresa, ammonia inopindirana nenitrogen oxides kuita volatile nitrogen uye mhute yemvura. Imwe yeammonia isingashandiswe mukuita inoshandurwawo kuita nitrogen inopisa uye mhute yemvura. Kushandiswa kwakananga kweammonia hakugoneki nekuda kwehupfu hwayo hwepamusoro uye hwema hunosemesa. Nokudaro iyo aqueous solution ye urea, yakachengeteka uye isinganhuhwi, kubva mairi ammonia inotorwa chete mu exhaust system nguva isati yasvika.
Masisitimu matsva anodzikisa manitrogen oxide mumagasi ekupera simba akatsiva yaimboshandiswa EGR masisitimu, ayo akange asina kunyatso shanda pachiyero cheEuro 6 chakaunzwa muna 2014. Nekudaro, haazi ese maEuro 6 injini dzinoda kuve neSCR system. Izvo zvinonyanya kukosha muzvikamu zvakakura zvekutyaira, zvishoma izvo zvinonzi "NOx trap" kana kuchengetedza catalyst inokwana. Iyo yakaiswa mu exhaust system uye inobata nitrogen oxides. Kana iyo sensor inoona kuti iyo catalyst yakazara, inotumira chiratidzo kune injini kutonga zvemagetsi. Iyo yekupedzisira, zvakare, inoraira majekiseni kuti awedzere mwero wemafuta panguva dzemasekondi akati wandei kuitira kupisa maokisi akavharirwa. Zvigadzirwa zvekupedzisira ndeye nitrogen uye carbon dioxide. Saka, chekuchengetedza catalytic converter inoshanda zvakafanana kune diesel particulate sefa, asi haina kunyatsoita seSCR catalytic converter, inogona kubvisa kusvika 90% yenitrogen oxides kubva kumagasi emhepo. Asi iyo "NOx trap" haidi yekuwedzera gadziriso uye kushandiswa kweAdBlue, izvo zvinogona kunge zvichinetsa.
Vapepeti vanokurudzira:
Yakashandiswa BMW 3 Series e90 (2005 - 2012)
Ko iyo inspectorate yetraffic, zvisinei, ichamiswa here?
Zvimwe zvinobatsira kune vatyairi
Wholesale AdBlue yakachipa kwazvo (PLN 2 parita), asi pachiteshi chegesi inodhura PLN 10-15 parita. Zvakadaro, uyu mutengo uri nani pane pane zvakatenderwa masevhisi zviteshi, kwaunowanzo fanira kubhadhara 2-3 nguva yakawanda pazviri. Inofanira kuyeukwa kuti AdBlu inotengwa nguva dzose, hapagoni kuva nemubvunzo wechitoro chinoda kutakurwa muhunde. Mvura yacho inofanira kuchengetwa pasi pemamiriro akakodzera uye kwete kwenguva yakareba. Asi imba yekuchengetera haidiwi, sezvo kushandiswa kwemushonga urea kuri kudiki. Inenge 5% yemafuta ekushandisa, i.e. yemotokari inoshandisa 8 l/100 km yemafuta edhiziri, angangoita 0,4 l/100 km. Pachinhambwe che1000 km inenge inenge 4 malita, zvinoreva kushandiswa kwe40-60 zł.
Zviri nyore kuona kuti kutenga kweAdBlue pachayo kunowedzera mari yekushanda kwemotokari, kunyange izvi zvinogona kuderedzwa nekuderedza kushandiswa kwemafuta mumajini ane SCR catalytic converter. Matambudziko ekutanga anoonekwawo, nekuti pasina AdBlue mumotokari, unofanirwa kutsvaga nzvimbo yekutengesa kune urea mhinduro pakarepo mushure memeseji nezve kudiwa kwekuwedzera. Kana mvura yapera, injini inoenda mune emergency mode. Asi matambudziko chaiwo, uye akakomba zvikuru, ari kune imwe nzvimbo. Mukuwedzera, iyo mari inosanganiswa neSCR system inogona kunge yakakwira zvakanyanya. Heino rondedzero yezvivi zvinouraya zveSCR system:
Low Tembiricha -AdBlue inotonhora pa -11 ºC. Kana injini iri kushanda, iyo yekudziya sisitimu padivi peAdBlue tank inova nechokwadi chekuti mvura haina kuoma uye hapana dambudziko. Asi kana mota yatangwa mushure mehusiku hwechando, AdBlue inotonhora. Hazvibviri kuzviisa kune injini inotonhora inotonhora kusvikira iyo yekupisa yaunza AdBlue kune imwe nzvimbo yemvura uye mutongi asarudza kuti dosing inogona kutanga. Pakupedzisira, mushonga weurea unobaiwa, asi kuchine urea makristasi mutangi anogona kuvhara AdBlue injector uye pombi mitsetse. Kana izvi zvikaitika, injini ichakundikana. Mamiriro acho haadzoke kune yakajairika kusvika urea yese yanyungudika. Asi makristasi eurea haanyungudika nyore asati asisina crystalline, anogona kukuvadza injector yeAdBlue uye pombi. Ijekiseni nyowani yeAdBlue inodhura angangoita mazana mashoma PLN, nepo pombi nyowani (yakabatanidzwa netangi) inodhura pakati pe1700 nezviuru zvakati PLN. Inofanira kuwedzerwa kuti kutonhora kwakadzika hakushandi AdBlue. Kana kuchitonhora uye kuchinyunguduka, mvura yacho inoshatisa. Mushure mekuchinja kwakawanda kwakadaro, zviri nani kuitsiva neimwe itsva.
High kutonhora - patembiricha iri pamusoro pe30 ºC, iyo urea muAdBlue inodonhedza uye inoora kuita organic substance inonzi biuret. Iwe unogona kubva wanzwa kunhuwa kusingafadzi kweammonia pedyo neAdBlue tank. Kana iyo urea yemukati yakadzikira, iyo SCR catalytic inoshandura haigone kupindura nemazvo, uye kana mota yekuongorora alarm ikasapindura, injini inoenda mune emergency mode. Nzira iri nyore yekutonhodza tangi yako yeAdBlue ndeyekudira mvura inotonhora pamusoro payo.
Kukundikana kwe mechanical uye magetsi zvikamu - kana yakashandiswa zvakanaka, kukanganisa kwepombi kana kukundikana kweAdBlue injector hazviwanzoitiki. Kune rimwe divi, nitric oxide sensors inokundikana kazhinji. Nehurombo, masensa anowanzo kudhura kupfuura majekiseni. Dzinodhura kubva pamazana mashoma kusvika ku2000 zł.
Kusvibiswa - Iyo AdBlue yekugovera sisitimu haishiviriri chero kusvibiswa, kunyanya girizi. Kunyange chidimbu chiduku chayo chichakuvadza kuiswa. Funnels nezvimwe zvinodikanwa pakuzadzazve urea solution hazvifanirwe kushandiswa kune chero chimwe chinangwa. AdBlue haifanirwe kuderedzwa nemvura, sezvo izvi zvinogona kukuvadza catalytic converter. AdBlue ndeye 32,5% mhinduro ye urea mumvura, chiyero ichi hachifanirwe kutyorwa.
SCR masisitimu akaiswa pamarori kubvira 2006, uye pamotokari dzinotakura vanhu kubvira 2012. Hapana anoramba kudiwa kwekuvashandisa, nokuti kubviswa kwezvinhu zvinokuvadza mumagasi emhepo ndeyekuita kwakanaka kwatiri tose. Asi nekufamba kwemakore ekushandiswa, SCR yakaita mukurumbira wayo wakaipisisa, ichipisa misangano yevatengi uye vashandisi vanotsamwisa. Izvo zvinonetsa sefirita, uye zvinogona kufumura varidzi vemotokari kune kuparara kwekutya uye mari yakawanda. Hazvishamisi kuti musika wakaita nenzira imwe chete seye particulate mafirita. Kune maworkshop anobvisa iyo AdBlue jekiseni kuisirwa uye kuisa yakakosha emulator inozivisa mota yekuongorora system kuti sefa ichiri munzvimbo uye inoshanda nemazvo. Uyewo munyaya iyi, rutivi rwetsika rwechiito chakadaro haruna chokwadi, asi izvi hazvishamisi kune vatyairi vakachera pasi peganda re SCR uye vakapinda muchikwama chavo. Rutivi rwepamutemo runosiya pasina mubvunzo - kubviswa kweSCR sefa hakusi pamutemo, sezvo inopesana nemamiriro ekubvumidzwa kwemotokari. Nekudaro, hapana anoedza kuona tsika yakadai, senge pakubvisa mafirita.
