Hore na o setsebi sa sehahi sa enjine, makhenike kapa moetsi, kapa motho ea chesehelang likoloi ea ratang lienjineri, likoloi tsa mabelo le likoloi tse lebelo, Sehahi sa Enjine se na le seo u se batlang. Limakasine tsa rona tsa khatiso li fana ka lintlha tsa tekheniki mabapi le ntho e 'ngoe le e' ngoe eo u hlokang ho e tseba ka indasteri ea enjine le limmaraka tsa eona tse fapaneng, athe likhetho tsa rona tsa likoranta li u boloka u tseba litaba tsa morao-rao le lihlahisoa, tlhahisoleseling le ts'ebetso ea indasteri. Leha ho le joalo, u ka fumana tsena tsohle feela ka ho ngolisa. Ingolise hona joale ho fumana likhatiso tsa khoeli le khoeli tsa khatiso le/kapa tsa dijithale tsa Engine Builders Magazine, hammoho le Litaba tsa rona tsa beke le beke tsa Engine Builders, Weekly Engine Newsletter kapa Weekly Diesel Newsletter ka ho toba ka inbox ea hau. U tla apareloa ke matla a lipere ka nako e khutšoanyane!
Hore na o setsebi sa sehahi sa enjine, makhenike kapa moetsi, kapa motho ea chesehelang likoloi ea ratang lienjineri, likoloi tsa mabelo le likoloi tse lebelo, Sehahi sa Enjine se na le seo u se batlang. Limakasine tsa rona tsa khatiso li fana ka lintlha tsa tekheniki mabapi le ntho e 'ngoe le e' ngoe eo u hlokang ho e tseba ka indasteri ea enjine le limmaraka tsa eona tse fapaneng, athe likhetho tsa rona tsa likoranta li u boloka u tseba litaba tsa morao-rao le lihlahisoa, tlhahisoleseling le ts'ebetso ea indasteri. Leha ho le joalo, u ka fumana tsena tsohle feela ka ho ngolisa. Ingolise hona joale hore u fumane likhatiso tsa khoeli le khoeli tsa khatiso le/kapa tsa elektroniki tsa Engine Builders Magazine, hammoho le Weekly Engine Builders Newsletter, Weekly Engine Newsletter kapa Weekly Diesel Newsletter, ka kotloloho ho inbox ea hau. U tla apareloa ke matla a lipere ka nako e khutšoanyane!
Enjene ea Harley-Davidson Revolution Max 1250 e bokelloa femeng ea khamphani ea powertrain ea Pilgrim Road e Wisconsin. V-Twin e na le phalliso ea 1250 cc. cm, bore and stroke 4.13 inches (105 mm) x 2.83 inches (72 mm) mme e khona ho etsa 150 horsepower le 94 lb-ft torque. Torque e kholo ke 9500 mme tekanyo ea compression ke 13: 1.
Ho pholletsa le histori ea eona, Harley-Davidson o sebelisitse tsoelo-pele ea theknoloji, ho hlompha lefa la letšoao la eona, ho fana ka ts'ebetso ea sebele bakeng sa bapalami ba sebele. E 'ngoe ea likatleho tsa morao-rao tsa moralo oa Harley ke enjene ea Revolution Max 1250, enjine e ncha e pholileng ea V-mafahla e ncha e sebelisoang mefuteng e khethehileng ea Pan America 1250 le Pan America 1250.
E etselitsoe ho potlaka le ho hohela, enjene ea Revolution Max 1250 e na le letlapa le pharalletseng la matla bakeng sa ho matlafatsa matla a bofubelu. Enjene ea V-Twin e hlophisitsoe ka ho khetheha ho fana ka litšobotsi tse nepahetseng tsa matla bakeng sa mefuta ea Pan America 1250, ka ho totobatsoa ho fana ka torque e tlase e tlase le taolo e tlase ea pheletso bakeng sa ho palama kantle ho tsela.
Tsepamiso ea maikutlo holim'a ts'ebetso le phokotso ea boima ba 'mele e khanna likoloi le meaho ea enjene, khetho ea thepa le ntlafatso e sebetsang ea moralo oa likarolo. Ho fokotsa boima ba sethuthuthu ka kakaretso, enjene e kopantsoe le mohlala oa Pan Am joalo ka karolo ea mantlha ea chassis. Tšebeliso ea thepa e bobebe e thusa ho finyella tekanyo e nepahetseng ea matla ho boima ba 'mele.
Enjene ea Revolution Max 1250 e bokelloa ho Harley-Davidson Pilgrim Road Powertrain Operations e Wisconsin. V-Twin e na le phalliso ea 1250 cc. cm, bore and stroke 4.13 inches (105 mm) x 2.83 inches (72 mm) mme e khona ho etsa 150 horsepower le 94 lb-ft torque. Torque e kholo ke 9500 mme tekanyo ea compression ke 13: 1.
Moralo oa enjine ea V-Twin o fana ka profil e moqotetsane ea phetisetso, o tsepamisa boima bakeng sa ho leka-lekana le ho sebetsana le maemo, 'me o fa mopalami sebaka se lekaneng sa leoto. Karolo ea 60-degree V-angle ea li-cylinders e boloka enjene e kopane ha e ntse e fana ka sebaka bakeng sa 'mele oa ho thella pakeng tsa li-cylinders ho eketsa phallo ea moea le ho ntlafatsa ts'ebetso.
Ho fokotsa boima ba phetisetso ho thusa ho fokotsa boima ba sethuthuthu, e leng ho ntlafatsang ts'ebetso, ho potlakisa, ho ts'oaroa le braking. Tšebeliso ea Finite Element Analysis (FEA) le mekhoa e tsoetseng pele ea ho ntlafatsa moralo mokhahlelong oa meralo ea enjene e fokotsa boima ba lisebelisoa likarolong tse entsoeng le tse bōpiloeng. Ka mohlala, ha moralo o ntse o tsoela pele, thepa e ile ea ntšoa ho tloha gear ea ho qala le ea camshaft drive gear ho fokotsa boima ba likarolo tsena. Moqomo o le mong oa aluminium o nang le nickel-silicon carbide surface electroplating ke sebopeho sa moralo o bobebe, hammoho le sekoaelo se bobebe sa magnesium alloy rocker, sekoaelo sa camshaft le sekoaelo se seholo.
Ho ea ka Moenjiniere e Moholo oa Harley-Davidson Alex Bozmosky, Revolution Max 1250′s drivetrain ke karolo ea sebopeho sa chassis ea sethuthuthu. Ka hona, enjene e na le mesebetsi e 'meli - ho fana ka matla le e le karolo ea sebopeho sa chassis. Ho felisoa ha foreimi ea setso ho fokotsa haholo boima ba sethuthuthu mme ho fana ka chassis e matla haholo. Litho tsa foreimi e ka pele, litho tsa foreimi e bohareng le foreime e ka morao li tlamelloa ka liboutu ka kotloloho ho phetiso. Bapalami ba fumana ts'ebetso e nepahetseng ka ho boloka boima ba 'mele, chassis e thata le bohareng ba bongata.
Enjene ea V-Twin, mocheso ke sera sa ho tšoarella le boiketlo ba bapalami, kahoo enjene e pholileng ka metsi e boloka enjene e tsitsitseng le e laoloang le mocheso oa oli bakeng sa ts'ebetso e tsitsitseng. Hobane likarolo tsa tšepe li atoloha 'me li fokotsehile, ho mamellana ha likarolo tse thata ho ka finyelloa ka ho laola mocheso oa enjene, e leng se hlahisang ts'ebetso e ntlafetseng ea phetisetso.
Ntle le moo, molumo o phethahetseng oa enjene le molaetsa o monate oa ho tima o ka laola ha lerata le tsoang mehloling e ka hare ea enjene le fokotsoa ke ho pholile ha metsi. Oli ea enjene e boetse e pholile ka metsi ho netefatsa ts'ebetso le ho tšoarella ha oli ea enjene maemong a thata.
Pompo e phodileng e hahiloe ka har'a li-bearings tse phahameng tsa ts'ebetso le litiiso bakeng sa bophelo bo atolositsoeng, 'me liphaseje tse pholileng li kopantsoe ka mokhoa o rarahaneng oa sekoahelo sa stator ho fokotsa boima ba phetisetso le bophara.
Ka hare, Revolution Max 1250 e na le li-crankpin tse peli tse fokolitsoeng ka likhato tse 30. Harley-Davidson o sebelisitse boiphihlelo ba eona bo pharalletseng ba mabelo a ho tšela linaha ho utloisisa morethetho oa Revolution Max 1250's power pulse. tatellano ea likhato e ka ntlafatsa ho ts'oara maemong a itseng a ho khanna ntle le tsela.
Ho khomaretsoe crank le lithupa tse hokelang ho entsoe lipiston tsa aluminium tse nang le compression ea 13: 1, tse eketsang torque ea enjene ka lebelo lohle. Li-sensor tse tsoetseng pele tsa ho lemoha li etsa hore tekanyo ena e phahameng ea compression e khonehe. Enjene e tla hloka mafura a 91 octane bakeng sa matla a mangata, empa e tla sebetsa ka mafura a tlase a octane mme e tla thibela ho phatloha ka lebaka la theknoloji ea sensor ea knock.
Botlaaseng ba piston bo hloekisitsoe kahoo ha ho na sesebelisoa sa ho hatella lesale se hlokahalang bakeng sa ho kenya. Sesepa sa piston se na le lesela le tlase la likhohlano le mehele ea piston e tlase e fokotsa likhohlano bakeng sa ts'ebetso e ntlafetseng. Li-ring linings tse ka holimo li na le anodized bakeng sa ho tšoarella, 'me li-jet tse pholileng tsa oli li lebisa tlase ho piston ho thusa ho felisa mocheso oa mollo.
Ho phaella moo, mochine oa V-Twin o sebelisa lihlooho tsa li-cylinder tse 'nè (tse peli tse kenang le tse peli) ho fana ka sebaka se seholo ka ho fetisisa sa li-valve. Sena se tiisa torque e matla e tlase le phetoho e boreleli ho matla a holimo ha moea o phallang ka phaposing ea mollo o ntlafalitsoe ho fihlela litlhoko tse hlokahalang tsa ts'ebetso le ho falla.
Valofo ea ho ntša metsi e tlatsitsoeng ka sodium bakeng sa ho qhala mocheso hantle. Litsela tsa oli tse emisitsoeng hloohong li finyelloa ka theknoloji e rarahaneng ea ho lahla, 'me boima bo fokotsehile ka lebaka la bonyane botenya ba lerako la hlooho.
Hlooho ea silinda e entsoe ka matla a phahameng a 354 aluminium alloy. Hobane lihlooho li sebetsa joalo ka libaka tsa ho hokela chassis, li etselitsoe hore li tenyetsehe sebakeng seo sa sehokelo empa li tiile holim'a phaposi ea mollo. Sena se finyelloa ka mokhoa o lebisitsoeng oa phekolo ea mocheso.
Hlooho ea silinda e boetse e na le li-camshaft tse ikemetseng tsa ho kenya le ho ntša metsi bakeng sa silinda e 'ngoe le e 'ngoe. Moralo oa DOHC o khothaletsa ts'ebetso e phahameng ea RPM ka ho fokotsa inertia ea terene ea li-valve, e hlahisang matla a phahameng a tlhoro. Moralo oa DOHC o boetse o fana ka nako e ikemetseng ea li-valve tsa nako (VVT) ho lik'hamera tse kenang le tsa ho tsoa, tse ntlafalitsoeng bakeng sa lisilindara tse ka pele le tse ka morao bakeng sa letlapa le pharaletseng la motlakase.
Khetha profaele e itseng ea khamera ho fumana tšebetso e lakatsehang haholo. The drive side camshaft bearing magazine ke karolo ea drive sprocket, e etselitsoeng ho lumella ho tlosoa ha camshaft bakeng sa ts'ebeletso kapa ntlafatso ea ts'ebetso ea nako e tlang ntle le ho tlosa drive ea camshaft.
Ho koala terene ea li-valve holim'a Revolution Max 1250, Harley o ile a sebelisa mochini oa li-roller pin valve actuation e nang le lisebelisoa tsa hydraulic lash. Moqapi ona o tiisa hore valve le valve actuator (pin) li lula li kopana kamehla ha mocheso oa enjene o fetoha. Li-adapter tsa hydraulic lash li etsa hore terene ea li-valve e se ke ea lokisoa, e boloka nako le chelete ea beng. Moqapi ona o boloka khatello e sa khaotseng holim'a kutu ea valve, e leng se hlahisang boemo bo mabifi ba camshaft bakeng sa ts'ebetso e ntlafetseng.
Ho phalla ha moea ka enjeneng ho thusoa ke li-throttles tse peli tse theohang pakeng tsa li-cylinders 'me li behiloe ho baka moferefere o fokolang le ho hanyetsa moea. Ho tsamaisoa ha mafura ho ka ntlafatsoa ka bonngoe bakeng sa silindara ka 'ngoe, ho ntlafatsa moruo le mefuta. Sebaka se bohareng sa 'mele oa throttle se lumella lebokose la moea la 11-litre ho lula ka ho phethahetseng ka holim'a enjene. Bokhoni ba kamore ea moea bo ntlafalitsoe bakeng sa ts'ebetso ea enjene.
Sebopeho sa lebokose la moea se lumella hore ho be le lebelo le tsitsitseng 'meleng o mong le o mong oa throttle, ho sebelisa inertia ho qobella moea o mongata ka kamoreng ea mollo, ho eketsa tlhahiso ea matla. Lebokose la moea le entsoe ka nylon e tlatsitsoeng ka khalase e nang le mapheo a ka hare a ka hare ho thusa ho kokobetsa molumo le ho kokobetsa lerata la ho noa. Boemakepe bo shebileng pele bo khelosa lerata le kenang ho mokhanni. Ho felisa lerata la ho noa ho lumella molumo o phethahetseng oa ho ntša metsi ho busa.
Ts'ebetso e ntle ea enjine e netefatsoa ke sistimi e ts'epahalang ea sump lubrication e nang le pokello ea oli e hahelletsoeng ka har'a crankcase casting. Lipompompo tse tharo tsa ho ntša oli li hula oli e ngata ho tsoa likamoreng tse tharo tsa enjine (crankcase, stator chamber le clutch chamber). Bapalami ba fumana ts'ebetso e ntle ka ho fetisisa hobane tahlehelo ea matla a parasitic e fokotsehile hobane likarolo tse ka hare tsa enjene ha lia tlameha ho bilika ka oli e ngata.
Fensetere ea moea e thibela clutch ho tjhaja oli ea enjene, e ka fokotsang phepelo ea oli. Ka ho fepa oli ka bohareng ba crankshaft ho ea ho li-bearings tsa melamu tse kholo le tse hokahanyang, moralo ona o fana ka khatello e tlase ea oli (60-70 psi), e fokotsang tahlehelo ea matla a likokoana-hloko ka rpm e phahameng.
Boiketlo ba ho palama ba Pan America 1250 bo netefatsoa ke sekala sa kahare se felisang ho thothomela ha enjene, ho ntlafatsa boiketlo ba bapalami le ho lelefatsa ho tšoarella ha koloi. Tekanyetso e ka sehloohong, e ka har'a crankcase, e laola ho sisinyeha ho ka sehloohong ho entsoeng ke crankpin, piston le rod e kopanyang, hammoho le "clutch e pota-potileng" kapa ho se leka-lekane ho le letšehali ho bakoang ke cylinder e sa lumellaneng. Motlakase o thusang hloohong ea silinda e ka pele lipakeng tsa li-camshaft e tlatselletsa sekala sa mantlha ho fokotsa ho thothomela.
Qetellong, Revolution Max ke drivetrain e kopaneng, ho bolelang hore enjene le lebokose la li-gearbox tse tšeletseng li bolokiloe 'meleng o le mong. Clutch e na le li-disc tsa friction tse robeli tse etselitsoeng ho fana ka ts'ebelisano e sa feleng ka torque e kholo bophelong bohle ba clutch. Ho lefella liliba ka har'a koloi ea ho qetela ho thethefatsa melumo ea torque ea crankshaft pele e fihla lebokoseng la gear, ho netefatsa phetisetso e tsitsitseng ea torque.
Ka kakaretso, Revolution Max 1250 V-Twin ke mohlala o motle oa hore na ke hobaneng ha lithuthuthu tsa Harley-Davidson li ntse li batloa joalo.
Batšehetsi ba enjine bekeng ena ke PennGrade Motor Oil, Elring-Das Original le Scat Crankshafts. Haeba u na le enjene eo u ka ratang ho e totobatsa letotong lena, ka kopo romella lengolo-tsoibila la Sehahi sa Enjine Greg Jones [imeile e sirelelitsoeng]
Nako ea poso: Nov-15-2022