SR20 cav: specifications, nta thiab xyuas

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

Lub cav SR20DE yog ib lub zog nto moo tshaj plaws siv hauv Nissan tsheb. Nws yog thawj zaug siv rov qab rau xyoo 1989. Cov cuab yeej no tau tso tawm los hloov pauv rau CA20 lub cav cam khwb cia hlau, uas twb dhau los ntawm lub sijhawm ntawd.

Kev piav qhia dav dav

Thaum lub sijhawm ntawd, lub cav SR20DE tshiab tau siv lub tog raj kheej txhuas thaiv thiab qhuav cam khwb cia hlau liners. Qhov siab ntawm qhov thaiv no yog 211.25 hli. Raws li rau tag nrho qhov ntev, cov cuab yeej no yog hom square nrog qhov ntev ntawm 86 x 86 hli, qhov ntev ntawm cov hlua txuas ntawm lub zog yog 136 hli, qhov siab ntawm pistons yog 32 hli. Lub tog raj kheej taub hau ntawm hom no yog ntxaib-ncej nrog 4 li qub rau ib lub tog raj kheej. Lub cav SR20DE muaj ntau qhov kev txhaj tshuaj. Ntawm no nws tuaj yeem raug sau tseg tias nyob rau tib lub sijhawm nrog lub cev muaj zog, SR20Di kuj tau tsim tawm, tab sis nws cov koob meej tau dhau los ua tsawg dua. Nws txawv ntawm nws cov neeg paub zoo nyob rau hauv qhov kev txhaj tshuaj yog ib qho taw tes nrog kev tsim kho dua tshiab. Qhov no kuj cuam tshuam rau lub zog, txij li cov khoom siv txhaj tshuaj mono sib txawv tsuas yog hauv 115 hp. Nrog. thiab 6000rpm ua. Lub cav SR20DE ntawm thawj qhov kev hloov kho twb tau txawv los ntawm nws lub zog ntawm 140 hp. Nrog. thiab 6400 rpm. Txij li nws yog qhov kev hloov kho DE uas tau dhau los ua ntau tshaj plaws, nws tsim nyog xav txog ntau yam ntxiv.

thawj tus qauv ntawm chav tsev

Thawj lub cav ntawm chav kawm no tau paub qhov txawv ntawm qhov tseeb tias nws muaj lub hau liab valve, uas yog vim li cas nws thiaj li hu ua SR20DE Red top High chaw nres nkoj. Raws li cov ntaub ntawv ntawm cov qauv no, nws muaj cov khoom noj khoom haus, lub tshuab tso pa nrog cov yeeb nkab ntawm 45 mm inch, camshafts nrog cov ntsuas xws li 248/240, nqa ntawm 10.0 / 9.2 hli. Tag nrho cov ntaub ntawv no tau coj mus rau qhov tseeb tias qhov kev hloov kho ntawm lub zog hluav taws xob tuaj yeem ncav cuag 7500 rpm.

Cov ntawv txuas ntxiv no tsuas yog tso tawm xyoo 1994 thiab nws yog qhov kev txhim kho ntawm "Redtop". Hauv qhov no, tib lub hau tig dub, thiab yog li ntawd Liab tau hloov mus rau Dub hauv lub npe. Raws li kev hloov pauv hauv cov yam ntxwv ntawm SR20, qhov kev hloov kho thib ob tau dhau los ua tus phooj ywg zoo dua qub. Nws kuj tau tsim kho lub tog raj kheej lub taub hau kom noj li qub, camshafts yog 240/240 nrog 9.2 / 9.2 hli nqa, thiab cov yeeb nkab txoj kab uas hla tau txo mus rau 38 hli.

Nws tuaj yeem ntxiv tau tias xyoo 1995 lub cav tau tso tawm uas muaj lub camshaft tshiab nrog qis qis qis, vim tias tus lej ntawm kev hloov pauv hauv nws poob mus rau 7100 ib feeb.

Latest SR20DE

Piv txwv li, lub cav SR20 ntawm Nissan Serena lossis lwm homtib lub tuam txhab tau hloov kho me ntsis ib zaug ntxiv. Qhov kawg hloov pauv rau nws tau tshwm sim hauv 2000. Tom qab ntawd cov cuab yeej raug tso tawm, uas yog hu ua Roller rocker. Cov menyuam rockers thiab camshafts nrog 232/240 kev ntsuas thiab 10.0/9.2 hli nqa tau siv ntawm no. Ntawm no, cov springs thiab li qub tau luv me ntsis (los ntawm 3 hli). Cov kev hloov me me tau ua rau lub pistons, siv lub crankshaft sib dua, nrog rau qhov luv luv ntawm cov khoom siv manifold. Nrog rau cov yam ntxwv zoo li no, SR20DE Roller Rocker cav tau tsim tsuas yog 2 xyoos, thiab hauv 2002 lub tuam txhab tau tso tseg cov khoom siv no tag nrho.

Lwm yam hloov kho

Nws yog ib qho tsim nyog hais tias xyoo 1989, tsis yog tsuas yog lub tshuab cua ntawm lub cav no tau tso tawm, tab sis kuj muaj lwm qhov kev hloov kho ntawm nws, uas yog hu ua SR20DET, nws qhov sib txawv yog qhov tseeb tias turbocharging tau siv ntawm no.

Lub cav rau Nissan Liberty SR20 thiab SR20DET tau zoo sib xws nyob rau hauv uas cov tuam txhab muab ob qho kev hloov kho nrog tib lub hau liab, thiab xyoo ntawm lawv tso tawm thiab ua tiav coincided. Raws li qhov sib txawv, SR20DET kuj tau nruab nrog tib hom turbocharger li Garret T25G. Kev ua haujlwm siab ntawm cov khoom no yog 0.5 bar. Lawm, qhov kev hloov pauv no tau dhau los ua qhov tseem ceeb thiab tsis tuaj yeem tab sis cuam tshuam rau cov yam ntxwv thiab kev tsim qauv. Hnyav-duty txuas rods tau siv ntawm no, 370 cc / min injectors tau teeb tsa, xws li camshafts, 240/240 qauv tau teeb tsa ntawm no.lawv lifts. Lwm qhov sib txawv ntawm qhov tsim yog qhov kev taw qhia ntawm lub throttle valve nrog qhov ntev ntawm 60 mm. Nyob rau hauv cov nqe lus ntawm cov yam ntxwv kev, lub SR20DET cav kuj nyob rau hauv tej rooj plaub zoo heev tshaj nws counterpart. Tshwj xeeb, lub zog tau nce mus rau 205 hp. s., tab sis tus naj npawb ntawm cov kiv puag ncig yog 6000 ib feeb. Torque yog 274 Nm thaum tuav 4000 rpm.

Txhim kho version ntawm SR20DET

Nws tsim nyog sau cia tias txij xyoo 1990 txog 1994 ib qho kev txhim kho ntawm Redtop tau tsim nrog lub turbocharger. Yog hais tias nyob rau hauv ib tug pa cav qhov compression piv tau txo mus rau 8.5, ces ntawm no nws raug txo los ntawm lwm 0.2 los ntawm tus nqi no. Lub turbine nws tus kheej kuj tau hloov los ntawm T28, vim qhov kev ua haujlwm siab tau nce mus rau 0.72 bar. Kuj tseem muaj zog dua 248/248 camshafts nrog 10.0 hli nqa. Cov tshuaj txhaj tshuaj tau raug hloov los ntawm 370 mus rau 440, thiab lub tog raj kheej taub hau bolts kuj tau ntxiv dag zog, thiab ob peb lwm yam kev txhim kho me me tau ua. Tag nrho cov kev hloov no coj mus rau qhov tseeb tias lub zog nce mus rau 230 hp. nrog., tus naj npawb ntawm cov kiv puag ncig ib feeb tau nce los ntawm lwm 400, thiab lub zog sib npaug ntawm 280 Nm thaum tuav 4800 kiv puag ncig.

Thaum kawg, peb tuaj yeem ntxiv tias qhov kev txhim kho tau siv hauv ib hom tsheb nkaus xwb - qhov no yog Nissan GTi-R, uas tau npaj tshwj xeeb rau kev koom tes hauv WRC.

Cov yam ntxwv ntawm tag nrho SR20 series

Ntawm no yog tsim nyog sau cia tias qhov ua tau zoo ua rau nws tus kheej xav, kev ntseeg siab thiab ua haujlwm ntev ntawm cov nomotors yog pov thawj thiab nyob rau hauv ib tug heev theem. Raws li rau tej yam tseem ceeb shortcomings, lawv yeej tsis tuaj. Tab sis muaj teeb meem me me. Cov no muaj xws li floating idle. Qhov no feem ntau yog tshwm sim los ntawm kev ua haujlwm nrawm nrawm lossis roj tsis zoo. Nrog rau qhov tsis txaus ntseeg, lub ntsiab lus xws li DMRV tuaj yeem ua tsis tiav.

Feem ntau, piv txwv li, cov peev txheej ntawm lub sijhawm sib txuas yog siab heev thiab muaj ntau dua 250 txhiab km. Cov yam ntxwv ntawm lub cav SR20 tau txais txawm tias tam sim no. Yog tias koj sau cov roj zoo, ua haujlwm tsis tu ncua lub cav ntawm SR qauv, koj tuaj yeem tsav ntau dua 400 txhiab mais ntawm nws yam tsis muaj kev puas tsuaj.

Muaj peev xwm txhim kho

Vim tias lub cav nws tus kheej tuaj yeem siv sijhawm ntev, nws tseem tuaj yeem ua haujlwm txaus ntawm Nissan cov qauv qub. Vim li no, thiaj yuav txawj txhim kho nws.

Raws li hom atmospheric SR20DE, koj yuav tsum pib nrog lub tog raj kheej taub hau. Koj yuav tsum tau txiav txim siab seb yuav coj Low lossis High Port. Ntawm no nws yog ib qho tsim nyog yuav tsum tau coj los ntawm lub hauv paus ntsiab lus hauv qab no. Yog tias qhov chaw nres nkoj ntawm lub taub hau yuav tsis raug nqa tawm, ces nws yog qhov zoo dua los nqa "Low port". Yog tias qhov kev ua haujlwm zoo li no tseem ua tiav, ces "High Port" yuav pom meej meej dua, vim tias nws muaj peev xwm ntau dua.

Txhawm rau kom lub zog ntawm lub cav no, koj tuaj yeem pib nrog qhov yooj yim tshaj plaws. Koj yuav tsum yuav JWT S3 camshafts, nrog rau lub kaw lustxias kom tsawg, tso tawm ncaj qha nrog 4-1 manifold. Txij li thaum qhov kev xaiv yog suav hais tias yog nyiaj txiag, nws yuav, ntawm chav kawm, muab qhov nce, tab sis nws yuav yog qhov tseem ceeb heev. Txhawm rau kom muaj zog nce ntxiv rau lub zog xws li chav tsev, nws yuav tsum tau txo qis compression piv. Rau qhov no, kev teeb tsa ntawm lub teeb piston, uas tuaj yeem coj los ntawm tus qauv xws li SR20VE, yog qhov zoo heev. Txhim kho cov ntsiab lus no yuav pab txhawb qhov sib piv rau 11.7.

Tsim cov yam ntxwv ntawm tag nrho cov kab, tshuaj xyuas

Nws tsim nyog sau cia tias hloov txoj cai SR20 lub cav mount (los yog sab laug) yog ncaj ncaj, vim koj tsis tas yuav tshem tag nrho lub cav ntawm lub tsheb. Feem ntau, muaj ntau yam nta:

• txhua lub tog raj kheej yog ua los ntawm cov hlau cam khwb cia thiab "qhuav" liners hauv ib qho txhuas thaiv;
• tag nrho cov khoom noj thiab tso pa tawm yog ua los ntawm cov hlau;
• DOCH cov phiaj xwm xa tawm roj muaj ob lub taub hau camshafts uas tswj 16 li qub;
• yuav luag txhua lub cav ntawm lub cav no raug yuam los ntawm qhov tseeb tias qhov ntxiv turbo raug teeb tsa.

Kev tshuaj xyuas txog lub cav SR20, lossis ntau dua ntawm cov kab tag nrho, yog qhov zoo heev. Ntau tus tau sau tseg tias qhov zoo ntawm txhua qhov chaw thiab tag nrho lub zog hluav taws xob tag nrho yog qhov tsim nyog heev. Yog tias koj saib xyuas nws tus mob thiab ua tiav kev tshuaj xyuas lossis ib qho haujlwm me me raws sijhawm, ces nws tuaj yeem ua haujlwm tau ntev. Qhov no tau txhawb ntxiv los ntawm qhov tseeb tias, piv txwv li,SR20DE kawg tau tso tawm hauv xyoo 2002, thiab nws tseem ua haujlwm zoo hauv qee cov qauv ntawm lub tsheb mus txog hnub no. Yog li ntawd, lub cav SR20 yog lub cav nrov tshaj plaws nyob rau niaj hnub no.