Audi 4.2 v8 injini - powertrain specifications

Injini ya 4.2 V8 ili ndi ngodya ya foloko ya 90 °. Zina mwapadera ndi monga 90 mm silinda malo ndi malo a nthawi unyolo pa clutch mbali. 4.2 V8 wagawo amaonedwa yekha kusinthidwa, chifukwa akatswiri opanga German ntchito zinachitikira wolemera kugwirizana ndi ntchito ndi kupanga zitsanzo m'mbuyomu injini.

4.2 V8 injini - deta luso

Mphamvu yamagetsi idapatsidwa dzina lakuti BVN. Kusamuka konseko kunali 4134 cm3 ndi mphamvu ya 240 kW (360 hp), kubereka kwa 83 mm ndi pisitoni ya 95,5 mm yokhala ndi chiŵerengero cha 16,4: 1. Komanso kuyenera kutchulidwa ndi kuwombera: 1-5-4-8-6-3-7-2. Kulemera konse kwa galimotoyo kunali 255 kg.

Galimoto imagwiritsa ntchito dongosolo la Bosch control - EDC-16 CP + model, komanso Common-Rail system yokhala ndi mphamvu ya jekeseni mpaka 1600 bar ndi nozzles ndi mabowo 8. Njira yothetsera gasi yotulutsa mpweya idalandiridwanso ndi choziziritsira mpweya wotulutsa madzi komanso makina oyeretsera omwe ali ndi zopangira ma oxidation awiri komanso fyuluta ya dizilo yopanda kukonza (DPF). Kutulutsa mpweya kumayenderana ndi miyezo ya Euro IV.

Mayankho akupanga mu drive

Okonzawo anasankha nkhani yopangidwa ndi chitsulo chosungunuka, chogawidwa pambali ya crankshaft. Mbali yapansi imagwiritsa ntchito chimango cholimba, chomwe ndi nyumba ya zipewa zazikulu zonyamulira. Chifukwa cha mayankho awa, komanso zopangira zomwe zimagwiritsidwa ntchito, kulemera kwa 4.2 V8 kwakhala kopepuka ndi ma kilogalamu 10 poyerekeza ndi mtundu wa 4.0 lita.

Crankshaft ya injini idapangidwa kuchokera ku chitsulo cha 42 CR MO S4 ndikulemba mbiri kuti ma torque oyambira ndi achiwiri akhale oyenera. Chigawocho chimaphatikizidwa mu 5 mayendedwe. Tiyeneranso kudziwa kuti ma radii osinthika a crankpins adatsitsidwanso kuti awonjezere mphamvu ya crankshaft.

Mapangidwe a galimoto amakhudza chikhalidwe chapamwamba cha ntchito

Chimodzi mwazosankha zazikulu pankhaniyi chinali dongosolo la crank-piston, lomwe silinakhudzidwe ndi kugwedezeka, kotero kuti injiniyo sinapange phokoso lalikulu. Kuonjezera apo, kulemera kowonjezera kwa torsional vibration damper ndi mbale yoyendetsa galimoto kumapereka mphamvu yokwanira ya unit mphamvu. 

Ubwino wa injini ya 4.2 V8 unakhudzidwanso ndi momwe mutu wa silinda unapangidwira, wobwereka ku chitsanzo cha 3.0 L V6. Ili ndi mavavu anayi pa silinda, ma camshaft opinda, kusintha kwa hydraulic lash, mikono ya rocker roller ndi spur lash adjustment sprockets.

Chifukwa chakuti zisoti zonyamula zimapanga chimango chofanana ndi chosindikizira chathyathyathya, ndipo zinthu za kapu ndi pulasitiki, ndipo kumangirira kwa zinthuzo kumakhala kolimba, kutsekemera kwabwino kwambiri kwa gawolo kumatsimikiziridwa.

Njira yozizira bwino

Zimapangidwa ndi mpope wamadzi ndi thermostat, zomwe zimayikidwa m'nyumba wamba yomwe ili kunja kwa galimoto. Pampu imayendetsedwa ndi tcheni D kudzera pazitsulo ziwiri ndi magiya pa mpope wamafuta.

Jekete lamadzi limafika pachimake kudzera m'madoko awiri a jakisoni omwe amapereka zoziziritsa ku mbali zakunja za chitsulo chamagetsi. Osonkhanitsa madzi amaponyedwa kumbali zonse za chinthu ichi, chomwe chili ndi mabowo anayi omwe amaperekedwa.

Zimadziunjikira m'chipinda pakati pa mabanki a silinda ndikuyenda kupita ku rediyeta kapena molunjika mbali yakukoka kwa mpope wamadzi, kutengera makonzedwe a thermostat.

Exhaust system imasintha kuchokera ku DPF

4.2 V8 imagwiritsa ntchito zosintha poyerekeza ndi mitundu yam'mbuyomu. Izi zikutanthauza kugwiritsa ntchito chithandizo cha carborundum chokhala ndi mipanda yopyapyala. Chifukwa chakuti makulidwe a khoma amachepetsedwa ndi 37% poyerekeza ndi mtundu wa 3.0L V8, gawo lothandiza la chothandizira likuwonjezeka.

Izi zimachepetsa kupanikizika kwa m'mbuyo ndikufupikitsa nthawi yokonzanso fyuluta. Njirayi idapangitsanso kuti zitheke kukonzanso chigawocho kale kutentha kwa 580-600 ° C ndikusunga mpweya wochepa wotulutsa mpweya.