Kuya kuba kuhle kwaye kupholile ukuthetha ukuba kwiminyaka engama-20 eyadlulayo, i-BMW yenza indlela yokutyumza iklasi ye-GT ye-Porsche, isebenzisa kuphela i-wits kunye ne-inline-six, kodwa oko akuyi kuba njalo.I-injini ye-S54B32 idlale nje i-fiddle yesibini kwi-4.0L V8 ekhuselwe kakhulu, kodwa lelinye ibali.Inkcazo eyinyani kakhulu kukuba i-S54 ibhengeze isiphelo somgca wokukhwaza, okunqwenelwa ngokwendalo i-M50/S50 yosapho lwe-BMW e-inline sixes.
Yayiluyilo olululo ukusuka ekuqaleni kwesiqhelo sokushushumbisa: yongeza i-bore kunye ne-stroke kwi-injini endala kwaye ungeze itekhnoloji entsha ekhoyo ngendlela ye-Double VANOS (i-BMW ithethela i-cam eguquguqukayo yokutshintsha kuzo zombini ii-camshafts ezingaphezulu ezimbini, ezikwazi ukulungelelanisa. i-centerline yokuthatha ukusuka kwi-70-130 ° kunye ne-centreline yokukhupha ukusuka kwi-83-128 °).Yongeza iqhuma elincinane kucinezelo (ukuya ku-11.5:1), imizimba eshukumayo yomntu ngamnye, abalandeli be-rocker cam ngomnwe, i-Double VANOS ekhankanyiweyo ngaphambili, kunye ne-internal scavenged two-wet-sump oil pan, kunye noluphawu oluphezulu lwesithandathu- isilinda iba yinto ekhethekileyo kakhulu phaya ngo-2001 kwaye nangoku.
Ukuba nemveliso ethile ye-104 ye-horsepower-per-litre kunye ne-stratospheric 8,000-rpm redline yayingaviwa ngaphandle kwe-injini ye-Italian enezihlalo ezibini okanye amavili amabini aseJapan.Obona buhle bale njini bubonakala xa usikrazula esi silo.Iimbaleki ze-CNC-profiled intake, ii-CNC-milled combustion chambers, iivalve ezinkulu ze-alloy, izikhokelo zevalve yobhedu, kunye ne-alloy eqinile ecocekileyo ephosayo yonke into ibonakala isekhaya kwi-injini yogqatso kunento ephuma kumgca wemveliso.
Olu luhlu lweempawu lufundeka njengentelekelelo kuninzi lwemveli lokukrola umwonyo, oomatshini bokugqibela bokuDriving Machine.Ngethamsanqa, kuthi sonke, i-aftermarket yondla imfuno yethu thina someleza uthando.Iidrifter, i-drag racer, kunye ne-junkies yokuhlaselwa kwexesha bonwabela kwiikhithi ezinkulu ze-turbo enye okanye uzuko lwe-centrifugal-blower.Ubuhle bokwenyani bokuguqulwa kwe-injini ngumvuzo owufumanayo, xa ezi zixhobo zokusila ezinomthamo ophezulu we-volumetric zifumana ulangazelelo olungelulo lwendalo kunye nohlengahlengiso olufanelekileyo oluxhasayo.Esi siqwenga siya kukukhokela, iifiends zamandla okugqibela, kwinkqubo yokulungiselela isiphelo esiphezulu samandla amakhulu ekunyuseni.
Ekuqaleni, siza kuqhawula kwaye sihlole eyona nto siyidlalayo.I-ounce yothintelo yiponti yonyango apha.Ukubeka olu hlobo lwexesha kunye nemali kwi-casting engasebenziyo kuya kuba yimpazamo enkulu.Ngelixa i-S54 ingenalo udumo lokuqhekeka, kuthatha ixesha lokucoca, ukujonga ngokubonakalayo, kunye novavanyo loxinzelelo iibhatyi zamanzi ngumsebenzi ofanelekileyo.
Into ongayaziyo inokukwenzakalisa kunye nesipaji sakho.Kubaluleke kakhulu ukuvavanya ngokupheleleyo ukuphoswa kwentloko yesilinda ukuze uqiniseke ukuba ikulungele ukufumana umsebenzi obiza imali eninzi, onzima ngaphambili.
Nje ukuba ukwazi ukubiza undoqo osebenzayo, lixesha lokuvavanya iinjongo zakho.Olu lwakhiwo lubandakanya i-E36-chassis drift car, esebenzisa i-stock BMW short-block, yonke isondliwa yi-centrifugal Rotrex supercharger.Ukusetyenziswa kwesitokhwe esifutshane sebloko kudala i-conundrum encinci njengoko ipiston yoqobo ayikhululekanga ngokwaneleyo ukuba isebenze ngokupheleleyo i-VVT xa kukho iivalvu ezinkulu ezisetyenziswa kwicala lokuthatha.
Kolu lwakhiwo sikhethe ubungakanani beOEM (35mm) iivalvu ze-nitrided zokungena ezingenastainless kunye ne-31.5mm (1mm oversize) iivalvu zokukhupha i-Inconel;zombini kwiindidi zokuguqulwa komgcini omnye.Zombini ii-VAC Motorsports ezinkulu ezifumaneka kwi-Schrick “Forced Induction” camshafts kunye nokuba nokwenzeka kokuncanyiswa kwe-rev limiter-kissing kumdyarho wokutyibiliza kufuna ulawulo olululo lwevalvu.Iseti eyomeleleyo yeevalvesprings ezimbini zomgangatho ophezulu ukusuka kwiSupertech Performance kunye nezigcini ezihambelanayo ezinobunzima be-titanium zasetyenziswa.
I-S54 isebenzisa ingalo eyodwa-ye-BMW, i-rocker engasemva yomnwe efakwe kwi-rocker shaft.Oku kubonelela ngesantya sokuvula i-valve kunye nokuphindaphinda kwe-rocker ratio, kodwa, ngokutsho kwabanye, inokuba yingxaki yokunxiba.Siyibonile impumelelo ekusebenziseni unyango lwe-WPC kubalandeli be-OEM rocker, nangona abanye benokukhetha ukugquma kwe-DLC.
Ngeendawo ezibekiweyo, ngoku sinokusondela kuluhlu lweenkqubo esiya kuzigubungela kwivenkile yoomatshini.Nangona umgijimi othathayo we-S54 i-CNC-profiled ngokupheleleyo, kukho iindawo ezincinci zokuphucula, ezifana neprofayili yesihlalo kunye ne-pocket-throat diameter.I-exhaust port yisantya esiphezulu, esahluliwe, i-D-shaped venturi, eyenzelwe ukukrazula ngokwendalo, i-RPM ephezulu echithwe iigesi.Umsebenzi weprofayile, onje ngokuqondisa imbaleki, uya kuba neenzuzo apha.Ujongano oluqhelekileyo lomatshini lwevalvu yokukhokela lusasebenza kugqithiso lobushushu, ukutywinwa kwevalvu, kunye nobomi obude.Izikhokelo zevalve ye-S54s kufuneka ziqwalaselwe njengoko zifuneka.
Emva kokwenza iprofayile kunye nokunxiba, sijonge ngokulula ukugudisa amanqaku ezixhobo ezibukhali zegumbi lokutshisa.Sikwaqinisekisa ukufana kwe-volumetric kunye ne-burette.Ingqwalasela enkulu kufuneka ihlawulwe kwiprofayili yesihlalo, ngenxa yokwanda kobungakanani bevalvu kwi-exhaust.Isitulo sevalve sisebenza kwiinjongo ezimbini ezibalulekileyo: ukutshonisa ubushushu obuphuma kwivalve kwibhatyi yamanzi, kunye nokubonelela ngenguqu yezibuko ukondla igumbi lokutsha elixabisekileyo elicinezelekileyo (kwaye lihlala liphole) emoyeni.
Iprofayile yesitulo inokulandelwa ngokuqhwatywa ngesandla ukuqinisekisa ujongano oludityanisiweyo olufanelekileyo lwesihlalo ukuya kwivalvu.Nje ukuba umsebenzi wevalvu uhloliwe kwaye uvavanyiwe, inyathelo elilandelayo kukusila kunye nokuhlolwa kwe-flange apho i-PCD ejikelezayo ijika "isithandathu kunye nesithoba" ukuze igqibezele ngokugudileyo kunye neflethi.Ukuhlolwa kwenxalenye yokugqibela kwenzeka kweli nqanaba ngaphambi kokubetha iwasha yamalungu.Emva kokuba sineendawo ezicocekileyo nezifanelekileyo, sibeka i-bench-adjust the valves.Sibambelela kwiinkcukacha zomenzi wekhamera kwaye sigqibezela indibano yokugqibela ngohlolo lokugqibela.
Ngaphambi kokuba sisike itshiphu enye, kufuneka sibeke kwaye silinganise zonke iinjongo zethu.Ubungakanani bevalve yokungena kunye ne-exhaust yi-35mm kunye ne-31.5mm ngokulandelelanayo.Injongo yethu yokuthatha ubuncinane i-85-pesenti ye-35mm - okanye ubuncinane i-29.75mm ububanzi bomqala epokothweni phakathi kwesihlalo kunye ne-port.Ithagethi yokukhupha isondele kwi-90-pesenti ye-31.5mm - okanye i-28.35mm - ububanzi bomqala.
Abaninzi banokuqaphela umkhwa wokuqwalaselwa okuhlawulwayo kwi-exhaust kwesi sicelo;vumela oku kugxininise ukubaluleka kwayo ekusebenzeni kakuhle kwevolumu.Gcina ukhumbula ukuba iinjineli zaseMunich zichithe ixesha labo elininzi ekuthatheni.Saxhoma intloko yesilinda kumatshini wesitulo sevalve yeSerdi kwaye sasebenzisa i-convex-radius yokufaka i-convex-radius ukufumana idiamitha yomqala orhabaxa.Sifuna lo mlinganiselo phambi kokuba sikhuphe iimbaleki.Isinika amandla okudibanisa amanqaku omatshini okanye i-seams eshiywe yi-rotary throat insert ngokunjalo.
Ukusikwa kwesitulo sokuhlola kunceda ukubeka ipokotho yomqala.Ngelixa ubungakanani bomqala obugqibeleleyo busaxoxwa, akukho ngxoxo-mpikiswano yokuba ukuphucula umlinganiselo wayo yinto ephambili ekuphuculeni ukuhamba ngokubanzi.
Inqanaba elilandelayo alifuni ulwelo loyilo okanye i-scribing.Amazibuko okungenisa abekwe nge-O-ring groove kwaye i-exhaust iya kuba nkulu ngokumangalisayo kumbhali kunye nomdlalo wezibuko.Ke, amava kunye nobulumko zizakhono ezibini ezicaphukisa i-die-grinder enezandla ezizinzileyo.
Ezona ndawo zinkulu zokwenza i-chip yi-D-shaped half-moons ye-exhaust port.Siyasila, silungise, kwaye siyibaxe imilo ka-D.Akukho ngaphezu kwe-2mm yokususwa kwemathiriyeli kwiindonga zezibuko kufuneka ibe yanele kuninzi lwezicelo ezingaphantsi kwe-1,100 whp.Imida ebukhali kunye nezahluli ekuthatheni zifumana i-smooth kunye ne-bull-nosing kunye ne-80-grit cartridge roll elula.
Xa sele iprofayili, i-exhaust ifumana i-80-grit ilandelwa yi-120-grit.Silandelelanisa ukukhanya okunqamlezileyo ukuwisa ukuthungwa kulawulo lwekhabhoni.Igumbi lokutshisa lifumana i-massaging yokugqiba efana ne-exhaust, ibetha iindawo eziphakamileyo kunye ne-tooling burrs ukukhusela nayiphi na i-pre-ignition okanye i-glow-plugging.
Ukuqhubela phambili kwe-exhaust port ukusuka kwi-chippy ukuya kumtyibilizi.Izibuko lokukhupha lifumana eyona nto isusayo kunye nomsebenzi wokulungisa kwakhona kwintloko ye-S54 emiselwe ukubona ukonyuswa.
Ukuchaza izihlalo zevalvu yenye inkqubo abaninzi abayigqala “njengobugcisa obumnyama.”Ngokwenene ayisiyonto ngaphandle kwefiziksi kunye nejometri.Igumbi lokuvutha le-S54's compact 33cc lisebenzisa i-12mm iplagi yentlantsi edla ngokufunyanwa kwizithuthuthu ukuze ilingane ezi zivalo zikhankanywe ngasentla.
Ekubambeleleni nomxholo obambeneyo, kodwa ohamba nomoya ophezulu, sikhethe zombini ii-angle ezi-5 kunye nezihlalo ezi-radiused-zitulo, ezifumaneka kubonelelo loMatshini weGoodson.Bobabini abasiki basinike i-1mm-friendly-friendly seat, isihlalo se-45-degree, esidityaniswe nokusikeka okuguquliweyo, ngaphakathi nangaphandle kwesitya.
Ukuba usebenzisa iivalvu ze-titanium okanye uqhuba amanqanaba aphezulu kakhulu ehashe, kuya kufuneka uqwalasele isitulo esidityaniswe ngobhedu njenge-Moldstar90 okanye efanayo (lumkele i-carcinogenic, i-beryllium alloys).Sigqibezela i-QC ngomsebenzi wokuwela ngesandla, sisebenzisa uhlobo lwakudala, ikhomponi ye-clover entle ukujonga iringi yethu yokuphazamiseka.Ikwabonelela ngobuso bevalve eyophukileyo kakuhle ukunqanda utshintsho olukhulu kumtya wevalve.
Ezi nkqubo zigqwesa kuphela ngezikhokelo ezingqukuva nezicociweyo ngokufanelekileyo.Oku kulungiswa ngokwesiseko esifunekayo, ngokuqhelekileyo ukusuka kumgama ophakamileyo kakhulu kunye neendawo zokulondolozwa kakubi.Isikhokelo sokutshintsha esifanelekileyo yiyunithi yobhedu-manganese efumaneka kwiSupertech Performance.Khumbula, kule meko, ukugxila kukumkani.
Ngaphandle kweefasteners ezininzi zeflange ngendlela, siyakwazi ukugoba ngokuthe tye kunye nebhodi yeprofayile yokungenisa kunye nokukhupha iiflange ezininzi ngesandla.Ibonelela ngokudibana okugudileyo kunye nomgangatho osicaba wegasket entsha phakathi kwentloko yesilinda kunye nezinto ezininzi.Intloko ye-cylinder ke ifumana i-jigged kunye nokuchaneka kwenqanaba ngaphambi kokuba sisuse .002-.003 intshi nge-pass kwi-Rottler mill kunye ne-PCD yokufaka.Oku kushiya ngasemva agudileyo, MLS- okanye ubhedu-intloko gasket friendly, phakathi-30s (Ra) ukugqiba.Amagumbi, imiphetho yezibuko, kunye nemiphetho yedesika yangaphandle igxothwe ngefayile ejikelezayo enamafutha ngaphambi kokuvuthela iitshiphusi.
Umatshini wokujonga i-Rottler kunye nesixhobo sedayimane se-polycrystalline ushiya isibuko-umnyama ogqityiweyo kumphezulu wentloko yesilinda.
Ngeli xesha, ukwenziwa kwetshiphu kuyenziwa kwaye lixesha lokuhlamba umsebenzi wethu kunye ne-swarf.I-Brake icocekile okanye i-solvent-yondliwe ngumququ - kunye nomoya ocinezelweyo unokususa i-debris eyingozi kwiindawo ezixineneyo.Nje ukuba uzive ukhuselekile malunga nezo ndawo zixineneyo, lixesha lokuba siqhube iziqwenga zethu ezicwebezelayo ze-aluminiyam ngokusebenzisa iwasha yamalungu.
Iindidi ezimbini zoomatshini zibonelela ngococa olusebenzayo: iikhabhathi ezishushu ezishushu ezinamanzi aphezulu okanye ukuntywila kwe-ultra-sonic.Kwimeko yethu yeyokuqala umsebenzi wayo ufana nowomatshini omkhulu wokuhlamba izitya kwi-steroids.Nje ukuba ikhuhlwe sisicoci soxinzelelo oluphezulu, kushushu, kunye nesepha kancinane, izinto zokugalela zifumana amanzi ahlanjululwayo kumbhobho weshishini kunye nombhobho de imke intsalela yesepha.La manyathelo alandelwa ngumoya ocinezelweyo ukomisa nakuphi na ukufuma okushiyekileyo.
Ukucocwa okuqinileyo okulandelwa kukujongwa ngokucokisekileyo okubonakalayo phambi kokuba intlekisa linyathelo elibalulekileyo elingafanele lihoywe.
Intloko ye-S54 emva koko ithathwa isiwe kwibhentshi yokudityaniswa ecocekileyo kunye nomphezulu wetafile yerabha ethambileyo ukukhusela ukugaya okucolekileyo ekukrwelweni.Kulapho zombini incwadi kunye namava kusigcina kwindlela ethe tye nemxinwa ye-mise en indawo echanekileyo.Sikhetha ukubeka iivalve, izihlalo zevalve-spring, imithombo, izinto zokugcina, kunye ne-single-groove yokuguqula izitshixo ezicwangciswe kwibhentshi njengolwakhiwo lwenqanaba kwithafa ledabi.Xa yonke into ikwindawo yayo, kulula ukubona ukuba yintoni, ukuba kukho into engekhoyo.
Apha unokubona iivalvu zokuthatha ezinobungakanani be-OEM kunye ne-nitride yazo yokugquma, kunye ne-1mm yeevalvu zokukhupha ze-Inconel ezingaphezulu.Isitshixo seenzuzo ezinkulu kolu setyenziso luthile kukufumana igesi echithiweyo iphume ngokukhawuleza nangempumelelo kangangoko.
Intloko yesilinda isigculelo sokuseta ukucocwa kwevalvu linyathelo elilandelayo;Usenokunyenyisa iivalvu enjinini ukuba ikulungele.Siyifumana ingaphantsi kwemithambo-luvo ukucofa umkhala phambi kokuzinikela kwegasket ebambekileyo entloko.Ngethuba lolu luhlu lwamanyathelo, sisebenzisa imithombo yokukhangela elula endaweni yemithombo ephindwe kabini yomgangatho ophezulu ukwenzela ukuba kube lula ukuhlekisa.Khumbula ukuba ukusilela ekuthobeleni izikhokelo zohlengahlengiso olufanelekileyo kunokukuvulela iivalvu ezitshisiweyo, amandla aphantsi, i-valvetrain enengxolo, okanye ezinye iziphumo ezihlazisayo.
I-Schrick Camshafts ibiza i-valve clearance ye-.25mm (.010 intshi) yokungena kunye ne-exhaust yokusetyenziswa kunye nokusila kwabo.I-BMW ibiza i-.18-.23mm (.007-.009 intshi) kunye .28-.33mm (.011-.013 intshi) imvume, kwi-intake and exhaust ngokulandelanayo.Ngokuhambelana nomxholo wesithuthuthu, i-Wiseco yenza i-8.9mm OD shim kit ye-Husqvarna, KTM, kunye ne-Husaberg ekwalingana ne-S54: P/N: VSK4.Wena purists out there inokuba ifaneleka ngcono kwi BMW P/N: 11340031525. Ukuba wena (okanye i-machinist yakho) ubukwibhola ngexesha lokusikwa kwesitulo, ukuqala kuluhlu oluphakathi kubukhulu beshim kuya kusebenza kakuhle kuwe.
I-torque efanelekileyo kwi-cam caps ibalulekile ekuseteni ngokuchanekileyo i-valve lash.Ukwenza oku ngaphandle kwe-injini kunokwenza ubomi bube lula ngokwasemzimbeni, kwaye xa udibana nengxaki, ayifuni ukuba uyisuse intloko yesilinda kwibhloko.
Izikhondo zevalve zifumana i-Torco i-lube kwiziqu zazo kwaye ziphinde zihlolwe ukuba zifanelekile na njengoko zityibilikiswa kwizikhokelo zevalve.Izihlalo zeValvespring zilayishwa kumphezulu wecala phambi kwemithombo kwaye icompressor yepneumatic incike kwindawo yokugcina i-titanium.Oku kwenzeka amaxesha angama-23 ngakumbi de kufakwe zonke iivalvu, iziphethu, izigcina-mali, nezitshixo.
Ufakelo lwe-rocker shaft lulandelayo, kwaye kufuneka kuqatshelwe ukuba kwi-S54, i-exhaust rocker shaft inomngxuma oyile omele utyiswe kwigalari ye-oyile eyintloko entloko.Ukungaphumeleli ukulungelelanisa loo mngxuma ngokufanelekileyo kuya kubangela i-camshaft flat kunye nabalandeli.Abalandeli beminwe yindawo yosukuzwano kwabanye abahamba rhoqo kwi-intanethi;Ndiya kuphepha nayiphi na ingxabano ngokubonisa nje ukuba kukho iindlela ezintathu ezamkelweyo zabalandeli beminwe ukuze zisetyenziswe kunye neekhamera ezinkulu kunye nokusebenza kwe-RPM ephezulu: abalandeli be-Schrick Performance DLC (P / N: SCH-CF-S54-DLC), i-DLC egqunywe i-OEM abalandeli BMW (P/N: 11337833259, qhagamshelana Calico Coatings) okanye WPC waphatha OEM BMW abalandeli (P/N: 11337833259, qhagamshelana WPC Treatment).
Aba balandeli beminwe baphathwe nge-WPC baxutywe nge-microtextured yokugcina i-oyile kwaye bafakwe kwi-WPC's proprietary blend of surface-treatment metal.
I-Driven Lubricants yenza i-camshaft egqwesileyo, ebukhali kunye negrisi yokuphakamisa;qiniseka ukusebenzisa oku ngokukhululekileyo kwi-lobes kunye nobuso babalandeli bomnwe.Qinisekisa ukuba ufaka ilube yokuhlanganisa ekhaphukhaphu kwindawo ethwele icamshaft kunye neejenali phambi kokufaka iminqwazi kunye namandongomane.Iimpawu zetorque kunye nocwangco zixhomekeke kuwe, kuba ukuba uyayenza le nto, kuya kufuneka ube nencwadana enolwazi.
I-arithmetic ibonise ukuba siya kufumana i-2-2.5 psi emva kokuguqulwa kokuphefumula kwintloko ye-cylinder.Ukulungiselela ukonyuka kokusebenza kwevolumetric, sineepuli ezinkulu ezineembambo ezintandathu ezisikwe ngentsimbi emva koko zigqunywe i-zinc ukuxhathisa i-oxidation.
Ekugqibeleni, i-sensor ye-MAP ibonise ukunyuka okuqinileyo kwe-3 psi, okwenza ukuba i-Rotrex blower ibe phezulu phakathi kwe-14.5 kunye ne-17 psi, kuxhomekeke kumoya wemihla ngemihla.Uhambo oluya kwi-Rotrex Impeller calculator yesantya lubonise ukuba sinokuthi sigqithise kancinci i-C38-92 impeller yethu.Uphuculo lokuphefumla oludityaniswe nepuli ephambili ivelise inzuzo ye-156whp kunye ne-119 lb-ft yetorque.
Zininzi iinzuzo zamandla ehashe ekufuneka ziphunyezwe kwiinjini ezininzi zemveliso, nezo zibonwa zintsonkothile kakhulu okanye zibiza kakhulu.Ubugcisa bokwenyani kukufumana umda wokunciphisa imbuyekezo kwinkqubo nganye, ngaphambi kokudibana nolo donga ngexesha kunye nemali etyaliweyo.Ndiyathemba ukubuyela kwesi sihloko sokuhamba komoya kunye nokunyanzeliswa kokungeniswa kumxholo we-inline sixes yanamhlanje kungekudala.Xa elo xesha lifika, iya kuba nedatha eninzi ukwabelana nawe.
Ukuphefumla ngcono kuzisa amahashe amakhulu.Leyo yigophe lamandla eliphuculwe kakhulu ukonyuswa okuthe chatha kunye nentloko yesilinda esebenzayo ngakumbi.
Yakha eyakho incwadana yesiko ngomxholo owuthandayo osuka kwiTurnology, ngqo kwibhokisi yakho yangaphakathi, SIMAHLA ngokupheleleyo!
Siyathembisa ukuba asizukusebenzisa idilesi ye-imeyile kuyo nantoni na ngaphandle kohlaziyo olulodwa oluvela kwiNethiwekhi yeAuto Media.
Ixesha lokuposa: Jun-12-2020