Ɓangarori na Motoci Injector Diesel Injection 23600-69105 don Man Fetur na Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙasa

Ƙananan injunan diesel na ruwa mai saurin bugun jini guda biyu, wanda ke da kyakkyawan tattalin arziki da ingantaccen aminci, ana amfani da su sosai a cikin manyan jiragen ruwa, suna tuki kusan kashi 70% na yawan jigilar kayayyaki na duniya, kuma suna taka muhimmiyar rawa a cikin tsarin tattalin arzikin duniya. Ƙananan bugun bugun jini injin dizal na ruwa yana da babban ƙarfi da haɓakar abubuwa masu cutarwa. Hukumar kula da jiragen ruwa ta kasa da kasa (IMO) ta fara aiwatar da matakan Tier III a wasu wuraren sarrafa hayaki a cikin 2016, suna buƙatar injunan diesel na Marine tare da saurin ƙasa da 130r / min don fitar da bai wuce 3.4g / (kW·h) na NOx a cikin yankin kula da fitar da hayaki. Jiragen ruwan da suka gaza cika ka'idojin fitar da hayaki suna fuskantar rashin iya tashi zuwa teku a wasu kasashen da suka ci gaba. A halin yanzu, akwai manyan hanyoyin fasaha guda biyu don ƙananan injunan dizal na Marine don saduwa da ƙa'idodin fitarwa na Tier III: (1) fasahar rage zaɓin catalytic (selectivecatalyticreduction, SCR), raguwar catalytic na NOx ta ƙara urea N2, yana buƙatar karin saitin kayan aiki masu girma da yawa, da tsadar kulawa; (2) Fasahar sake zagayowar iskar gas (EGR) tana rage zafin konewa a cikin silinda ta hanyar gabatar da iskar gas, wanda hakan ya hana samar da NOx a cikin silinda, amma yana haifar da karuwar yawan mai. A cikin 'yan shekarun nan, tare da aikace-aikacen farko na babban matsin lamba na fasahar dogo na yau da kullun a cikin ƙananan injunan ruwa na ruwa, haɓaka tsarin tsarin allura da sassaucin dabarun allura ya tabbatar da samun babban ƙarfin haɓaka haɓakar mai da iskar gas a cikin silinda da tsarin konewa. A cikin wallafe-wallafen, ana amfani da micro-genetic algorithm don inganta matakan da aka riga aka yi amfani da su, kuma an gano cewa tsarin da ya dace kafin allurar zai iya rage lokacin jinkirin ƙonewa, inganta haɓakar konewa da kuma rage yawan amfani da man fetur.