Fluid yeSCR masisitimu. Isu tinoomerera kune zvakatipoteredza zviyero
Zviri mukati
SCR inonzi inosarudza nekuti yakagadzirirwa kudzikisa chete maokisi ane njodzi enitrogen mumagasi ekupedza kubva kumagetsi edhiziri. Iyo nzira inoshanda kwazvo, asi urea mhinduro inova imwe yekuwedzera kuzadza zvinhu.
Mashandiro anoita hurongwa
Urea kuburikidza nemupumburu inopinda mumagasi ekupedza mushure meiyo manifold yekuburitsa kune inokonzeresa. Mvura inomutsa kuparara kwenitrogen oxides mumvura uye nitrogen - zvinhu zvakasikwa zvinowanikwa mumhuka dzesango.
Zvido zveNew Environment Commission muEuropean Union zviri kumanikidza vagadziri vemotokari kuti vadzore zviyero zvekuburitsa mota uye kuisa maSCR pamotokari dzine injini dzedhiziri.
Zvenyama uye zvemakemikari zvinhu
Liquid yeSCR Adblue system, ine mhinduro yemvura uye urea:
- Demineralized mvura - 67,5% mhinduro;
- Urea - 32,5% mhinduro.
Adblue iri mupurasitiki yayo kana tangi resimbi, kazhinji padyo netangi remafuta. Iyo tangi yakashongedzerwa nekapu yebhuruu pamutsipa wekuzadza, ine inoenderana Adblue chinyorwa. Mitsipa yekuzadza urea uye matangi emafuta ane madhayamita akasiyana kuti abvise mukana wekukanganisa kana uchiwedzera mafuta.
Nzvimbo yechando ye urea ndeye -11 °C, tangi ye urea ine hita yayo. Zvakare, mushure mekunge injini yamira, pombi mune reverse mode inopomba reagent kudzoka mutangi. Mushure mekutonhora, urea yakanyungudutswa inochengeta zvimiro zvayo zvekushanda uye yakakodzera kushandiswa zvakare.
Fluid flow uye kushanda zvinodiwa
Avhareji yekushandiswa kwemvura inoshanda kune SCR ingangoita 4% yekudyiwa kwemafuta edhiziri kumotokari dzinotakura vanhu, uye ingangoita 6% yerori.
Iyo mota pane-bhodhi diagnostic system inodzora akawanda ma paramita eiyo urea mhinduro:
- level muhurongwa.
- Urea tembiricha.
- Kumanikidzwa kweiyo urea solution.
- Liquid injection dosage.
Iyo control unit inoyambira mutyairi nekuvhenekera rambi risingashande pane dashboard kuti mhinduro iri kudyiwa nekukasira uye tangi haina zvachose. Mutyairi anosungirwa kuwedzera reagent panguva yerwendo. Kana zviziviso zvehurongwa zvikafuratirwa, simba rejinjini rinoderedzwa kubva pa25% kusvika 40% kusvika reagent yazadzwa. Iyo dhizaini inoratidzira mileage counter uye nhamba yeinjini inotanga; mushure mekugadzirisa zvakare counter, hazvigoneke kutanga injini yemotokari.
Izvo zvinodikanwa kuzadza mvura yeSCR masisitimu chete kubva kune vanovimbika urea vagadziri: BASF, YARA, AMI, Gazpromneft, Alaska. Kuzadza tangi nemvura kana zvimwe zvinwiwa zvinodzima iyo exhaust system.
