Chothandizira cha okosijeni
Monga chothandizira m'badwo woyamba, Pt ndi Pd oxidation catalysts amagwiritsidwa ntchito kunja.Komabe, zopangira zotere zimatha kuwongolera utsi wa carbon monoxide ndi ma hydrocarbons, motero zimatchedwa / two way zero catalysts.Kuyambira zaka za m'ma 1980, boma la United States lakweza mlingo wa mpweya wa NOX wa magalimoto, kotero kuti zokopa zoterezi sizingagwirizane nazo ndipo zimachotsedwa pang'onopang'ono.
Njira zitatu zothandizira
Phase I
Pamene mulingo wotulutsa wa NOX wasinthidwa, zothandizira za Pt ndi Rh zatulukira monga momwe nthawi zimafunira.Chothandizira ichi chingathe kuyeretsa nthawi imodzi carbon monoxide, hydrocarbons ndi oxides wa nayitrogeni, motero amatchedwa katatu zero catalyst Uwu ndi kafukufuku wa/njira zitatu 0 chothandizira.Komabe, chothandizira ichi chimafuna kuchuluka kwazitsulo zamtengo wapatali monga Pt ndi Rh;Ndiwokwera mtengo ndipo sachedwa kupha poizoni.Chifukwa chake, sizoyenera magalimoto omwe amagwiritsa ntchito mafuta amtovu.
Gawo II:
Pt ndi Rh amasinthidwa pang'ono ndi Pd kuti achepetse mtengo wa chothandizira.Konzani/njira zitatu 0 chothandizira ndi Pt, Rh, Pd monga thupi lalikulu.Ikhoza kuyeretsa CO, HC ndi NO nthawi yomweyo.Ubwino wake ndi ntchito yayikulu, zotsatira zabwino zoyeretsa, moyo wautali, koma mtengo wokwera.Amagwiritsidwa ntchito kwambiri kunja;
Gawo lachitatu:
Zonse zothandizira palladium.Chitsanzo chothandizira chimakhala ndi ubwino woyeretsa nthawi imodzi ya CO, HC ndi NOX, mtengo wotsika, kukhazikika kwa kutentha kwapamwamba komanso mawonekedwe achangu.
Pokhapokha poyang'anira molondola chiŵerengero cha mafuta a mpweya mkati mwa zenera lopapatiza (nthawi zambiri 14.7 ± 0.25) pafupi ndi chiŵerengero cha mafuta a mpweya ndi mphamvu zomwe zowonongeka zitatu zingathe kuyeretsedwa panthawi imodzi.
Nthawi yotumiza: Nov-18-2022