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Isihlungi se-Universal diesel particulate Euro IV catalytic converter

Incazelo emfushane:

Isihlungi sokugeleza kwengxenye ye-diesel exhaust particulate trap - anti blocking kanye nokususwa ngempumelelo kwe-particle matter


Imininingwane Yomkhiqizo

Omaka bomkhiqizo

1. Kungani ibizwa ngokuthi i-partial flow particle trap?Ngesikhathi sokusebenza, i-exhaust yenjini ingena esicupheni sezinhlayiyana i-inlet, futhi iningi lokugeleza komoya ligeleza endaweni yokuhlunga.Izinhlayiya zivaleleke ebusweni bezwe eliphansi elizwakalayo kanye nelothayela, futhi lisabela nge-NO2 ekushiseni okuthile ukuze kuqedwe izinhlayiya;Ngakho-ke, uma izinga lokushisa lifinyelela ezimweni, ugibe lwezinhlayiyana zokugeleza okuyingxenye akulula ukubangela ukuvinjelwa futhi ngokuyisisekelo alunakho ukugcinwa;Uma izinga lokushisa eliqhubekayo lokukhipha igesi elifudumele lomsila lifinyelela ngaphezu kwama-degrees angu-250, okungcono kakhulu ama-degree angu-350, futhi inani lokuqala lokukhipha lingaphansi kuka-2.0, ukuvuselelwa kwesistimu kubushelelezi;Izinto ezithwalayo ziyi-iron chromium aluminium material, ekwazi ukumelana nezinga lokushisa futhi engeyona intekenteke ngesikhathi ihlakazwa futhi ihlehla.

2. Ukungalungi: ukusebenza kahle kokuhlunga akuphezulu, cishe ngama-50% kuphela;Uma izinga lokushisa lihluleka ukufinyelela izimo isikhathi eside, i-POC izovinjelwa, okudingeka isuswe ukuze igcinwe.

Isethulo somkhiqizo wesihlungi sokugeleza okuncane

1. Ingxenye yokugeleza kwezinhlayiyana isicupho SPF

1. Isakhiwo kanye nesimiso sokusebenza se-SPF

● yenziwe ngensimbi ekwazi ukumelana nezinga lokushisa eliphezulu;

● yakhiwe ngokushintshana kwendawo engaphezulu komuzwa oyisicaba kanye nomuzwa kathayela.Uhlangothi olulodwa lwezinzwa zikathayela luhlanganiswe nengxenye eyodwa yefulethi elingaphezulu nephansi elizwakalayo ukuze kwakheke umumo othi "zigzag";

● ukuphela komfula okuzwakalayo okuyisicaba kuhlinzekwa ngezimbobo ezincane ebangeni elithile, futhi ukuphela komfula okuzwakalayo okuhlanganisiwe kucindezelwa nge-groove eguquguqukayo e-perpendicular esiteshini sokugeleza komoya;

● ngesikhathi sokusebenza, i-exhaust yenjini ingena esicupheni sezinhlayiyana i-inlet, futhi iningi lokugeleza komoya ligeleza endaweni yokuhlunga.Izinhlayiya zivaleleke ebusweni bezwe eliphansi elizwakalayo kanye nelothayela, futhi lisabela nge-NO2 ekushiseni okuthile ukuze kuqedwe izinhlayiya;

● ingxenye yokugeleza komoya ikhishwa ngokuqondile ngezimbobo ezincane ze-flat felt, ngaleyo ndlela yenza umsebenzi wokuhlunga ukugeleza okuyingxenye.

2. Umdwebo wesakhiwo se-SPF

Kunezinhlelo ezimbili eziyinhloko zokuthuthukisa injini ye-diesel tail gas post-treatment enkathini yase-China IV.Enye iwukwelapha ama-nitrogen oxide egesi yomsila ngesisombululo se-urea ngokusebenzisa ubuchwepheshe obukhethiwe bokuncishiswa kwe-catalytic (SCR);Obunye ubuchwepheshe be-EGR (exhaust gas recirculation) obucubungula izinhlayiya ezikhiqizwa ukusha ngesihlungi se-diesel particulate (DPF) noma i-diesel oxidation catalyst (DOC).Njengamanje, i-DPF ibonwa ngumphakathi njengendlela esebenzayo yokunciphisa i-PM yenjini kadizili.Lapho izinga le-National IV lithuthukiswa lafinyelela ku-V likazwelonke, i-PM izoba yinkinga ebalulekile okufanele ixazululwe.Isixazululo ukusebenzisa i-DPF.

Umgomo owodwa wokuSebenza wesihlungi se-diesel particulate (DPF)

Njengoba kukhonjisiwe kuMfanekiso 1, isihlungi se-diesel particulate (DPF) iyisisetshenziswa esifakwe ohlelweni lokukhipha umoya wezimoto zikadizili ukuze kuncishiswe i-particle (PM) ekukhipheni ngokuhluza.I-DPF ithwebula izinhlayiya ngokusebenzisa izihlungi ezixutshwayo ezingaphezulu nangaphakathi, ezifana nemvula yokusabalalisa, imvula engenzi lutho noma ukucasha ngomugqa, okungahlanza ngempumelelo u-70% ~ 90% wezinhlayiya ekukhishweni kwegesi.Ingenye yezindlela eziphumelela kakhulu neziqondile zokuhlanza izinhlayiya zenjini kadizili, futhi isidayiswe emazweni ngamazwe.Ukuze kuhlangatshezwane nemithetho yokukhipha umoya ye-Euro VI noma yase-US 2010, i-exhaust yenjini kadizili ngemva kwesistimu yokwelapha izoba yinkimbinkimbi kakhulu.Kuyadingeka ukuhlanganisa i-diesel oxidation catalyst (DOC), isihlungi se-diesel particulate (DPF) kanye ne-selective catalytic reducer (SCR) ukulawula ukukhishwa kwenjini ye-diesel (Fig. 2).

Isihlungi se-Diesel particulate (DPF) sihlanganisa ikakhulukazi izinqubo ezintathu zokusebenza: isihlungi sezinhlayiyana asinalutho, isihlungi sezinhlayiyana sigcwele kanye nokunciphisa isihlungi sezinhlayiyana.Lapho isihlungi se-particle singenalutho (Fig. 3), ngoba akukho ukuvinjelwa kwezinhlayiyana ku-DPF, ukumelana nokugeleza kwegesi exhaust kuphansi kakhulu, okungeke kuthinte ukusebenza okuvamile kwenjini (njengokusetshenziswa kukaphethiloli, amandla), njll. Ngokuqhubekayo kwezinhlayiya ze-soot, izinhlayiya ze-soot ezithathwe ku-DPF zikhula kancane kancane, okuholela ekwandeni kokuphikiswa kokukhipha, futhi ukusetshenziswa kukaphethiloli namandla enjini kuthinteka ngokunyuka kokucindezela emuva kwe-exhaust.Iyunithi yokulawula injini iqapha ingcindezi yangaphakathi ye-DPF ngenzwa yokucindezela kwegesi ephumayo.Lapho iyunithi yokulawula injini iqapha ukuthi ingcindezi yangaphakathi ye-DPF ifinyelela inani elithile, igesi yokukhipha igesi kunzima ukuyikhipha, okunciphisa kakhulu amandla nomnotho wenjini.Ngalesi sikhathi, iyunithi yokulawula injini ilawula ukuhlanzwa nokunciphisa izinhlayiya ze-soot ngokwayo, Izinhlayiya ze-soot eziqoqwe ku-DPF zishiswa ekushiseni okuphezulu ukuze kubonakale ukuvuselelwa kwe-DPF.

Ukuvuselelwa okubili kwesihlungi se-diesel particulate (DPF)

Isihlungi se-Diesel particulate (DPF) sisebenza kahle kakhulu ngokuhlunga kwezinhlayiya zesoot, ezingafinyelela ku-60% ~ 90%.Ngesikhathi sokuhlunga, ukunqwabelana kwezinhlayiya kusihlungi sezinhlayiyana kuzokwandisa umfutho we-exhaust emuva wenjini ye-diesel.Lapho i-exhaust back pressure ifinyelela ku-16 kPa ~ 20 kPa, ukusebenza kwenjini kadizili kuqala ukonakala.Ngakho-ke, izinhlayiya kufanele zisuswe njalo ukuze kubuyiselwe isihlungi sezinhlayiyana esimweni saso sokuqala sokusebenza, okungukuthi, ukuvuselelwa.

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