Dizilo Injector Mafuta 0445120182 Bosch kwa Dongfengdfl 4.8 Cummins Sprayer Qsb4.5 Gawo 4 Final

4-cylinder QSB4.5 ya Tier 4 Final ndi yamphamvu kwambiri komanso yomvera kuposa kale, ikupereka mpaka 173 hp (129 kW), yokhala ndi torque yapamwamba ya 520 lb-ft (705 N•m), kuwonjezeka kwa 12 peresenti. kuposa injini yapita ya Tier 4 Interim.Tier 4 Final QSB4.5 imagawana Cummins VGT Turbocharger yofananira, makina amafuta a HPCR ndi ECM yokhala ndi injini ya Cummins QSB6.7.N'zosadabwitsa kuti mphamvu ya QSB4.5 ikufanana ndi machitidwe a injini zambiri za 6-silinda pansi pa 174 hp (130 kW), kuchokera ku phukusi laling'ono komanso lopepuka.

SCR imaphatikizidwa ndi kuphweka kwa Diesel Oxidation Catalyst yathu (DOC) ngati phukusi lokhazikika lokhazikika.Imagwiritsidwa ntchito pamakhazikitsidwe apakati a Tier 4, DOC imatsimikiziridwa kuti imachotsa Particulate Matter (PM) pogwiritsa ntchito kuyenda kosavuta-kupyolera mu oxidation yokhazikika.Miyeso yaying'ono kuposa mitundu ina ya chithandizo cham'mbuyo imapangitsa kuti chothandizira ichi kukhala chabwino pazida zopanda malo.Pamodzi, DOC ndi Cummins SCR zimagwira ntchito ngati njira yophatikizika kwathunthu, yoyeretsa kwambiri pambuyo pa chithandizo.Kupaka kwamphamvu kwambiri kumatsimikizira kuti njira yothandizira pambuyo pake imakwaniritsa kulimba kofanana ndi injini ya QSB4.5.Aka ndi koyamba kugwiritsa ntchito ukadaulo wathu wa VGT Turbocharger wopambana mphoto pa injini ya 4-cylinder.

Ukadaulo waukadaulo wa Cummins wokhala ndi ma sliding nozzle uli ndi malo ochepa ovala kuposa mawonekedwe ena aliwonse osinthika a turbine, zomwe zimabweretsa kulimba kopitilira muyeso pomwe akupereka kusintha kolondola kwa mpweya woperekedwa ku injiniyo, kupangitsa kukwera mwachangu pa injini yotsika rpm ndikusunga mulingo wokwera kwambiri pa rpm.QSB4.5 imabweretsa kuphweka kwa turbocharger imodzi, mosiyana ndi injini zina za 4-cylinder zomwe zimafuna ma turbocharger awiri kuti akwaniritse mphamvu zofanana, torque ndi kutalika kwake.Zosankha zapakatikati ndi zapamwamba zimapereka kusinthasintha kwa mapangidwe, kuti azitha kuphatikiza makina mosavuta.

Dongosolo la SCR pa QSB4.5 lakonzedwa mwachindunji ndi injini iyi ndi CES, ndikuchitapo kanthu kothandizira kukuchitika ngakhale kutentha kocheperako.Miyezo ya dosing ya DEF imachepetsedwa ndikusakanikirana kopitilira muyeso.Chotsukira mpweya cha Cummins Direct Flow chimathandizira kukhazikitsa kosavuta ndi malo ocheperako komanso kusefa kwakukulu.