fasaha mai ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙ
Ragewar mai sauya yanayi (SCR) hanya ce ta zamani don rage gurɓataccen yanayi wanda ya haifar da hayakin nitrogen oxide (NOx) daga injunan dizal. Babban aikin SCR shine canza NOx, tare da mai haɓaka, zuwa nitrogen mara lahani da ruwa, don haka rage tasirin muhalli na fitar da injin. Hanyoyin fasaha na SCR sun haɗa da amfani da mai haɓaka, yawanci an yi shi da ƙarfe masu daraja da kuma allurar mai rage ruwa, yawanci urea amma yana haifar da halayen sinadarai. Tsarin SCR yana da matukar mahimmanci a cikin aikace-aikace daban-daban, daga manyan motoci da motoci zuwa tsarin samar da wutar lantarki na masana'antu.