Kaya ndinu katswiri womanga injini, makanika kapena wopanga, kapena wokonda magalimoto amene amakonda injini, magalimoto othamanga komanso magalimoto othamanga, Opanga Injini ali ndi kena kake. Magazini athu osindikizira amapereka zambiri zaukadaulo pa chilichonse chomwe mungafune kudziwa zamakampani opanga mainjini ndi misika yake yosiyanasiyana, pomwe zosankha zamakalata athu zimakudziwitsani za nkhani zaposachedwa, zaukadaulo komanso momwe makampani amagwirira ntchito. Komabe, mutha kupeza zonsezi polembetsa. Lembetsani tsopano kuti mulandire zosindikizira za mwezi ndi/kapena za digito za Engine Builders Magazine, komanso Kalata yathu ya Omanga Engine ya mlungu ndi mlungu, Kalata ya Weekly Engine kapena Kalata ya Dizilo Yamlungu ndi mlungu molunjika mubokosi lanu. Mudzadzazidwa ndi mphamvu zamahatchi posachedwa!
Kaya ndinu katswiri womanga injini, makanika kapena wopanga, kapena wokonda magalimoto amene amakonda injini, magalimoto othamanga komanso magalimoto othamanga, Opanga Injini ali ndi kena kake. Magazini athu osindikizira amapereka zambiri zaukadaulo pa chilichonse chomwe mungafune kudziwa zamakampani opanga mainjini ndi misika yake yosiyanasiyana, pomwe zosankha zamakalata athu zimakudziwitsani za nkhani zaposachedwa, zaukadaulo komanso momwe makampani amagwirira ntchito. Komabe, mutha kupeza zonsezi polembetsa. Lembetsani tsopano kuti mulandire zosindikiza pamwezi ndi/kapena pakompyuta za Engine Builders Magazine, komanso Kalata yathu ya Weekly Engine Builders, Weekly Engine Newsletter kapena Weekly Diesel Newsletter, molunjika kubokosi lanu. Mudzadzazidwa ndi mphamvu zamahatchi posachedwa!
Injini ya Harley-Davidson Revolution Max 1250 yasonkhanitsidwa pamalo opangira magetsi a Pilgrim Road ku Wisconsin. V-Twin ili ndi kusamuka kwa 1250 cc. masentimita, oboola ndi kusikwa mainchesi 4.13 (105 mm) x 2.83 mainchesi (72 mm) ndipo amatha 150 mahatchi ndi torque 94 lb-ft. Makokedwe pazipita ndi 9500 ndi psinjika chiŵerengero ndi 13:1.
M'mbiri yake yonse, Harley-Davidson wagwiritsa ntchito chitukuko chaukadaulo, kulemekeza cholowa cha mtundu wake, kuti apereke magwiridwe antchito enieni kwa okwera enieni. Chimodzi mwamapangidwe aposachedwa kwambiri a Harley ndi injini ya Revolution Max 1250, injini ya V-twin yatsopano yamadzimadzi yogwiritsidwa ntchito mu Pan America 1250 ndi Pan America 1250 Special.
Injini ya Revolution Max 1250 yopangidwa kuti ikhale yolimba komanso yosangalatsa, ili ndi bandi yayikulu yopangira mphamvu zowonjezera. Injini ya V-Twin idakonzedwa kuti ipereke mawonekedwe abwino amphamvu amitundu ya Pan America 1250, ndikugogomezera pakubweretsa torque yotsika komanso kuwongolera kotsika kwapamsewu.
Kuyang'ana kwambiri pa magwiridwe antchito ndi kuchepetsa kulemera kumayendetsa kamangidwe kagalimoto ndi injini, kusankha zinthu komanso kukhathamiritsa kwapang'onopang'ono kwa kapangidwe kazinthu. Kuti muchepetse kulemera kwanjinga yamoto, injiniyo imaphatikizidwa mu chitsanzo cha Pan Am monga chigawo chachikulu cha chassis. Kugwiritsa ntchito zinthu zopepuka kumathandiza kukwaniritsa chiŵerengero choyenera cha mphamvu ndi kulemera.
Injini ya Revolution Max 1250 yasonkhanitsidwa ku Harley-Davidson Pilgrim Road Powertrain Operations ku Wisconsin. V-Twin ili ndi kusamuka kwa 1250 cc. masentimita, oboola ndi kusikwa mainchesi 4.13 (105 mm) x 2.83 mainchesi (72 mm) ndipo amatha 150 mahatchi ndi torque 94 lb-ft. Makokedwe pazipita ndi 9500 ndi psinjika chiŵerengero ndi 13:1.
Mapangidwe a injini ya V-Twin amapereka mawonekedwe opatsirana opapatiza, amawunikira kuchuluka kwa kuwongolera bwino ndikuwongolera, komanso kumapatsa wokwerayo malo okwanira amyendo. Ma 60-degree V-angle amasilinda amapangitsa injini kukhala yolumikizana kwinaku ikupereka malo opumira pawiri pakati pa masilinda kuti apititse patsogolo kuyenda kwa mpweya ndikuwongolera magwiridwe antchito.
Kuchepetsa kulemera kwa kufala kumathandiza kuchepetsa kulemera kwa njinga yamoto, yomwe imapangitsa kuti ntchito ikhale yabwino, yothamanga, yogwira ntchito komanso yothamanga. Kugwiritsa ntchito Finite Element Analysis (FEA) ndi njira zotsogola zamapangidwe apamwamba mu gawo la kapangidwe ka injini kumachepetsa kuchuluka kwa zinthu m'magawo opangidwa ndi opangidwa. Mwachitsanzo, momwe mapangidwewo amapitira patsogolo, zida zidachotsedwa pazida zoyambira ndi zida za camshaft kuti muchepetse kulemera kwa zigawozi. Silinda ya aluminiyamu yokhala ndi nickel-silicon carbide surface electroplating ndi mawonekedwe opepuka, komanso chophimba chopepuka cha magnesium alloy rocker, chivundikiro cha camshaft ndi chivundikiro chachikulu.
Malinga ndi Harley-Davidson Chief Engineer Alex Bozmosky, Revolution Max 1250's drivetrain ndi gawo lopangidwa ndi chassis ya njinga yamoto. Choncho, injini ali ndi ntchito ziwiri - kupereka mphamvu ndi structural element chassis. Kuchotsa chikhalidwe chimango kwambiri amachepetsa kulemera kwa njinga yamoto ndipo amapereka chassis wamphamvu kwambiri. Mamembala a chimango chakutsogolo, mamembala a chimango chapakati ndi chimango chakumbuyo amamangidwa molunjika kumayendedwe. Okwera amakwanitsa kuchita bwino kwambiri pochepetsa kunenepa kwambiri, chassis yolimba komanso kuyika pakati.
Mu injini ya V-Twin, kutentha ndi mdani wa kulimba ndi chitonthozo chokwera, kotero injini yoziziritsidwa ndi madzi imakhala ndi injini yokhazikika komanso yowongoleredwa ndi kutentha kwamafuta kuti igwire ntchito mosasinthasintha. Chifukwa zida zachitsulo zimakula ndikuchepa pang'ono, kulolerana kwazinthu zolimba kumatha kutheka powongolera kutentha kwa injini, zomwe zimapangitsa kuti ntchito yotumizirana ikhale yabwino.
Kuphatikiza apo, kamvekedwe kabwino ka injini komanso kutulutsa kosangalatsa kumatha kulamulira ngati phokoso lochokera mkati mwa injiniyo limachepetsedwa ndi kuziziritsa kwamadzi. Mafuta a injini nawonso amawunikiridwa ndi madzi kuti awonetsetse kuti mafuta a injini akugwira ntchito komanso kukhazikika pamikhalidwe yovuta.
Pampu yoziziritsa bwino imamangidwa muzitsulo zogwira ntchito kwambiri ndi zisindikizo kwa moyo wautali, ndipo ndime zoziziritsa kukhosi zimaphatikizidwa muzojambula zovuta za chivundikiro cha stator kuti muchepetse kulemera ndi kufalikira.
Mkati, Revolution Max 1250 ili ndi ma crankpins awiri otsitsidwa ndi madigiri 30. Harley-Davidson adagwiritsa ntchito mwayi wake wothamanga wodutsa dziko kuti amvetsetse nyimbo ya Revolution Max 1250′s power pulse rhythm. kutsatizana kwa digiri kumatha kupititsa patsogolo kuyenda munjira zina zoyendetsera galimoto.
Zophatikizidwira ku crank ndi ndodo zolumikizira zimakhala ndi ma pistoni opangidwa ndi aluminiyamu okhala ndi chiŵerengero cha 13: 1, chomwe chimawonjezera mphamvu ya injini pa liwiro lililonse. Masensa ozindikira ogogoda otsogola amapangitsa kuti kuchulukana kwakukulu uku kutheke. Injini idzafuna mafuta a octane 91 kuti ikhale yamphamvu kwambiri, koma idzayenda pamafuta ochepa a octane ndipo idzaletsa kuphulika chifukwa chaukadaulo wa sensa.
Pansi pa pisitoni ndi chamfered kotero palibe chida chopondereza mphete chomwe chimafunika kuti chiyike. Siketi ya pisitoni imakhala ndi zokutira zocheperako komanso mphete zolimba za pistoni zimachepetsa kukangana kuti zigwire bwino ntchito. Zingwe za mphete zapamwamba zimapangidwira kuti zikhale zolimba, ndipo ma jets oziziritsa mafuta amaloza pansi pa pistoni kuti athetse kutentha kwakuya.
Kuonjezera apo, injini ya V-Twin imagwiritsa ntchito mitu ya silinda ya valve inayi (kulowetsa kuwiri ndi kutulutsa ziwiri) kuti ipereke gawo lalikulu kwambiri la valve. Izi zimatsimikizira kuti torque yamphamvu yotsika kwambiri komanso kusintha kosalala kupita ku mphamvu yapamwamba pamene mpweya wodutsa m'chipinda choyatsira moto umakongoletsedwa kuti ugwirizane ndi zofunikira zogwirira ntchito ndi kusamuka.
Vavu yotulutsa mpweya wodzaza ndi sodium kuti muzitha kutentha bwino. Kuyimitsidwa mafuta ndime pamutu zimatheka kudzera mwaukadauloZida kuponyera luso, ndi kulemera kuchepetsedwa chifukwa osachepera khoma makulidwe a mutu.
Mutu wa silinda umapangidwa kuchokera kumphamvu kwambiri 354 aluminium alloy. Chifukwa mitu imakhala ngati malo olumikizirana ndi chassis, idapangidwa kuti ikhale yosinthika pamalo olumikizirana koma osasunthika pachipinda choyaka. Izi zimatheka mwa njira yochizira kutentha.
Mutu wa silinda umakhalanso ndi ma camshaft odziyimira pawokha komanso otulutsa mpweya pa silinda iliyonse. Mapangidwe a DOHC amalimbikitsa magwiridwe antchito apamwamba a RPM pochepetsa kusinthasintha kwa masitima apamtunda, zomwe zimapangitsa kuti pakhale mphamvu yapamwamba kwambiri. Mapangidwe a DOHC amaperekanso nthawi yodziyimira payokha ya valve (VVT) pamakamera olowera ndi otulutsa, okometsedwa kwa masilindala akutsogolo ndi kumbuyo kwa bandi yokulirapo.
Sankhani mbiri yamakamera kuti mupeze ntchito yomwe mukufuna kwambiri. The drive side camshaft bearing magazine ndi gawo la drive sprocket, yopangidwa kuti ilole kuchotsedwa kwa camshaft kuti igwiritsidwe ntchito kapena kukonzanso magwiridwe antchito amtsogolo popanda kuchotsa camshaft drive.
Kuti atseke masitima apamtunda pa Revolution Max 1250, Harley adagwiritsa ntchito cholumikizira cha valve cholumikizira ndi ma hydraulic lash adjusters. Kapangidwe kameneka kamapangitsa kuti valve ndi valve actuator (pin) ikhalebe yolumikizana nthawi zonse pamene kutentha kwa injini kumasintha. Zosintha za Hydraulic lash zimapangitsa kuti masitima apamtunda asamayende bwino, kupulumutsa eni nthawi ndi ndalama. Kapangidwe kameneka kamakhala ndi kupanikizika kosalekeza pa tsinde la valve, zomwe zimapangitsa kuti pakhale mbiri yaukali ya camshaft kuti igwire bwino ntchito.
Kuyenda kwa mpweya mu injini kumathandizidwa ndi ma throttles apawiri otsika omwe ali pakati pa masilinda ndipo amayikidwa kuti apange chipwirikiti chochepa komanso kukana kwa mpweya. Kutumiza kwamafuta kumatha kukonzedwa payekhapayekha pa silinda iliyonse, kuwongolera chuma komanso kuchuluka kwake. Malo apakati a throttle body amalola bokosi la mpweya wa 11-lita kukhala bwino pamwamba pa injini. Kuchuluka kwa chipinda cha mpweya kumakonzedwa kuti injini igwire ntchito.
Maonekedwe a bokosi la airbox amalola kuti pakhale mtunda wothamanga pamtundu uliwonse wa throttle, pogwiritsa ntchito inertia kukakamiza mpweya wambiri kulowa m'chipinda choyaka moto, ndikuwonjezera mphamvu. Airbox imapangidwa kuchokera ku nayiloni yodzazidwa ndi galasi yokhala ndi zipsepse zomangidwira mkati kuti zithandizire kuchepetsa kumveka komanso kuchepetsa phokoso lakumwa. Madoko olowera kutsogolo amapatutsa phokoso lolowera kutali ndi dalaivala. Kuchotsa phokoso lakumwa kumapangitsa kuti phokoso lotulutsa mpweya lilamulire.
Kuchita bwino kwa injini kumatsimikiziridwa ndi njira yodalirika yothirira sump sump yokhala ndi chosungiramo mafuta chomwe chimapangidwa mu crankcase casting. Pampu zopopera mafuta katatu zimachotsa mafuta ochulukirapo m'zipinda zitatu zamainjini (crankcase, stator chamber ndi clutch chamber). Okwera amapeza ntchito yabwino chifukwa kutaya mphamvu kwa parasitic kumachepetsedwa chifukwa zida zamkati za injini siziyenera kupota mafuta ochulukirapo.
Chophimba chakutsogolo chimalepheretsa clutch kuti isapereke mafuta a injini, zomwe zimatha kuchepetsa mafuta. Podyetsa mafuta pakatikati pa crankshaft kupita kumtunda waukulu ndi kulumikiza ndodo, kapangidwe kameneka kamapereka mphamvu yotsika yamafuta (60-70 psi), yomwe imachepetsa kutayika kwamphamvu kwa parasitic pa rpm.
Kutonthoza kwa Pan America 1250 kumatsimikiziridwa ndi chowongolera chamkati chomwe chimachotsa kugwedezeka kwa injini, kuwongolera chitonthozo cha okwera ndikukulitsa kulimba kwagalimoto. Choyimira chachikulu, chomwe chili mu crankcase, chimawongolera kugwedezeka kwakukulu komwe kumapangidwa ndi crankpin, piston ndi ndodo yolumikizira, komanso "clutch rolling" kapena kusalinganika kumanzere komwe kumachitika chifukwa cha silinda yolakwika. Chothandizira chothandizira pamutu wa silinda wakutsogolo pakati pa ma camshaft chimakwaniritsa chowerengera chachikulu kuti muchepetse kugwedezeka.
Pomaliza, Revolution Max ndi drivetrain yolumikizana, zomwe zikutanthauza kuti injini ndi ma gearbox othamanga asanu ndi limodzi amakhala m'gulu limodzi. Clutch ili ndi ma discs asanu ndi atatu othamangitsana opangidwa kuti azigwira ntchito nthawi zonse pamlingo wokulirapo nthawi yonse ya clutch. Kulipiritsa akasupe mumayendedwe omaliza amawongolera ma torque a crankshaft asanafike pa bokosi la gear, kuwonetsetsa kuti ma torque amayenda mosasinthasintha.
Ponseponse, Revolution Max 1250 V-Twin ndi chitsanzo chabwino cha chifukwa chake njinga zamoto za Harley-Davidson zikufunikabe.
Othandizira injini sabata ino ndi PennGrade Motor Oil, Elring-Das Original ndi Scat Crankshafts. Ngati muli ndi injini yomwe mukufuna kuwunikira pamndandandawu, chonde tumizani imelo mkonzi wa Engine Builder Greg Jones [imelo yotetezedwa]
Nthawi yotumiza: Nov-15-2022