I-EA888 Gen 3 vs. Gen 4: Uyini Umehluko?

Injini ye-EA888 evela kuVolkswagen Group idume ngokonga amandla ngendlela exakile, iyonga uphethiloli, futhi ithembekile. Futhi amashumi eminyaka, injini iye yabuyekezwa ngokulandelana.

IGen 3 neGen 4 zidume kakhulu kubashayeli bansuku zonke, okuhlanganisa iGolf GTI ne-Audi A3. Kulokhu okuthunyelwe, sizoxoxa ngomunye umehluko phakathi kwalezi zizukulwane ezimbili kanye nezinye izindaba ezijwayelekile ezikhona kunguqulo ye-Gen 4.

Okuqukethwe
Umehluko phakathi kwezinjini ze-EA888 Gen 3 kanye ne-Gen 4
    1. Ikhanda le-cylinder kanye ne-exhaust design
    2. Uhlelo lomjovo wamafutha
    3. Isitimela se-valve kanye nokulungiswa kwe-camshaft
    4. I-Turbocharger
    5. Amasistimu wokupholisa
    6. Ukuhlanganiswa okuxubile okumaphakathi
Izinkinga ezijwayelekile zenjini ye-EA888 Gen 4
    1. Ukuhlanjululwa kwamafutha
    2. Izinkinga zesistimu ye-Mild-hybrid (izinguqulo ze-Gen 4 MHEV)
    3. Izinkinga ze-Exhaust gas recirculation (EGR).
    4. Izinkinga zokulawula i-Turbocharger
    5. Izinkinga zevalvu yokuphefumula kwe-Crankcase
Imicabango yokugcina

Umehluko phakathi kwezinjini ze-EA888 Gen 3 kanye ne-Gen 4

1. Ikhanda le-cylinder kanye ne-exhaust design

I-Gen 3

I-EA888 Gen 3 inikeza i-integrated exhaust manifold (IEM) eyakhelwe ekhanda lesilinda. Lokhu okusha kwenza amagesi aphumayo ahambe ibangana elifushane, anciphise i-turbo lag futhi athuthuke. i-turbocharger impendulo.

Iphinde isize injini ukuthi igcine amazinga okushisa ekahle okusebenza kwayo ngokuzungeza amagesi e-exhaust emshinini wokupholisa injini, okuyenza isebenze kahle kakhulu. Kodwa-ke, ngenkathi isebenza kahle, lo mklamo usashiye indawo yokuthuthukiswa kokusebenza kahle kokushisayo nokulawulwa kokukhipha igesi.

I-Gen 4

I-Gen 4 ihamba ngesinyathelo esisodwa phambili kokwakhelwe ngaphakathi qeda ngokuphindaphindiwe, ingeza iziteshi zokupholisa ezengeziwe kanye nomumo ohlangene. Lokhu kuhlelwa okushuniwe kwehlisa izinga lokushisa elishisayo, okuvumela injini ukuthi ifudumale ngokushesha nakakhulu futhi izuze ukonga uphethiloli ongcono uma kuqalwa izinga lokushisa eliphansi.

Iphinde ihlanganise kahle nezinto zokwelapha zangemuva (ezifana nezihlungi zezinhlayiya neziguquli ze-catalytic), okubalulekile ekuthotshelweni kwezindinganiso eziqinile zokukhipha umoya njenge-Euro 6d ne-WLTP.

2. Uhlelo lomjovo wamafutha

I-Gen 3

Ukusiza ngezinkinga zokwakheka kwekhabhoni ezivamile ngezinjini zokujova eziqondile, i-Gen 3 ihlanganise isistimu yokujova kabili ehlanganisa umjovo oqondile (DI) kanye nomjovo kaphethiloli wembobo (PFI).

I-PFI ihlanza ama-valve okuphuza ngokufafaza uphethiloli ngokusebenzisa ukudla okuningi, kuyilapho i-DI iqinisekisa inani elifanele likaphethiloli lingena ekamelweni elivuthayo. Lolu hlelo luthuthukisa ukusebenza kahle nempilo ende yokusha emotweni esebenza kahle kakhulu njengeGolf R.

I-Gen 4

I-Gen 4 inesistimu yokujova kabili kodwa ilungisa ukulethwa kukaphethiloli ngokungeza ama-injection anomfutho ophezulu ofinyelela kubha engu-350 (uma kuqhathaniswa nebha engu-~200 ku-Gen 3). Lokhu kuthuthukisa i-atom kaphethiloli, okuholela ekushiseni okuhlanzekile, i-throttle esabelayo, namandla engeziwe. Ngaphezu kwalokho, futhi banciphisa ukukhishwa kwe-particle, okwenza i-Gen 4 ihambisane nemvelo kakhulu kune-Gen 3.

3. Isitimela se-valve kanye nokulungiswa kwe-camshaft

I-Gen 3

I-Gen 3 ifaka i-variable valve timing (VVT) kukho kokubili ukungena nokukhipha amakhokho. Injini ilawula isikhathi se-valve ekulayisheni kwenjini kanye nesivinini, okwenza okungcono kakhulu kwakho kokubili umoya nokuvutha emzamweni wokukhulisa amandla nokusetshenziswa kukaphethiloli. Nokho, ububanzi bokulungiswa bunomkhawulo ngandlela-thile uma kuqhathaniswa nemiklamo emisha.

I-Gen 4

Indlela yokubeka ikhamera ku-Gen 4 icwengisiswe kakhulu futhi inikeza izinketho eziningi zokwenza ngokwezifiso. Lokhu kuvumela ukulungiswa okuhle kakhulu kwesikhathi se-valve nokonga kukaphethiloli okungcono kuma-RPM aphansi namandla kuma-RPM aphezulu. Lesi sici futhi sisiza ekwenyukeni kokulethwa kwamandla kanye nokuphendula kwe-throttle.

4. I-Turbocharger

I-Gen 3

Injini yeGen 3 isebenzisa i-turbocharger ene-single-scroll, enikeza itorque enkulu enezinga eliphansi namandla aphezulu. Kodwa-ke, ama-turbos okuskrola okukodwa awasebenzi kahle ngenxa yokuthi ama-pulses e-exhaust ayagqagqana, abambezela ukusebenza kukonke kanye nokuphendula kwe-turbo ezimeni ezithile.

I-Gen 4

Gen 4 ushintshela ku-a twin-scroll turbo, ehlukanisa ama-exhaust ama-cylinders (okungukuthi, 1-4 no-2-3). Lolu hlelo lusiza ngokukhipha, ngakho-ke i-turbo iphenduka ngokushesha futhi ine-turbo lag encane. Umphumela uwukuthuthuka okubonakalayo kwetorque esezingeni eliphansi kanye nokuphendula kwebanga elimaphakathi okuwusizo ekushayeleni kwansuku zonke nokusebenza.

5. Amasistimu wokupholisa

I-Gen 3

Injini yeGen 3 TSI inesistimu yokupholisa ejwayelekile lapho eyodwa i-thermostat ilawula izinga lokushisa kwenjini. Nakuba kuthembisa, bekunganembile njengezinhlelo zesimanje ekusabalaliseni ukushisa phakathi kwebhulokhi yesilinda nekhanda.

I-Gen 4

I-Gen 4 ifaka ubuchwepheshe bokuhlukanisa-ukupholisa, obuvumela ukupholisa okuzimele kwebhulokhi yesilinda nekhanda. Lokhu kuvumela injini ukuthi ifinyelele izinga lokushisa ngokushesha lapho igcina ukupholisa okuhle ngesikhathi somthwalo omkhulu. Umphumela uba ukusebenza kahle kokushisa okungcono nokuncipha kokugqoka kwenjini ngokuhamba kwesikhathi.

6. Ukuhlanganiswa okuxubile okumaphakathi

I-Gen 3

I-Gen 3 ayizange yakhelwe kucatshangelwa ukufakwa kukagesi, kuncike ngokuphelele ekwakhiweni kwenjini evuthayo. Yize isebenza kahle ngesikhathi sayo, ayinazo izici ezifana ne-regenerative braking noma i-coasting, ezivamile ezinjinini zesimanje.

I-Gen 4

I-Gen 4 yakhelwe ukusebenza ngamasistimu e-mild-hybrid afaka i-architecture kagesi engu-48-volt. Le sistimu inika amandla izici ezifana nokuma kokuqala, imodi ye-coasting, kanye ne-regenerative braking, ukunciphisa ukusetshenziswa kukaphethiloli nokukhipha umoya.

Isibonelo, lapho uhamba ngomkhumbi, injini ingacisha ngokuzenzakalelayo futhi isebenzise i-mild-hybrid ukuze inike amandla izisetshenziswa eziyizisekelo.

Ukufunda okuqhubekayo: Konke Odinga Ukukwazi Nge-EA888 Engines

Izinkinga ezijwayelekile zenjini ye-EA888 Gen 4

Injini ye-EA888 Gen 3 yayinezinkinga ezithile eziyenze, kwezinye izimo, ingathembeki. Lokhu kufaka phakathi ukusetshenziswa kukawoyela ngokweqile, ukwehluleka kochungechunge lwesikhathi, izinkinga ze-thermostat, ukwakheka kwekhabhoni, nezinkinga ze-turbo.

Ngokuthuthukiswa kwenjini yesizukulwane sesine i-EA888, izinkinga eziningi ngeGen 3 zaxazululwa. Ngaphandle kokwethenjelwa kakhulu, iGen 4 isenezinkinga ezithile. Nazi ezinye ezivame kakhulu:

1. Ukuhlanjululwa kwamafutha

Ukuhlanjululwa kukawoyela, okwenzeka lapho uphethiloli ongashile uxutshwa namafutha enjini, kungenye yezinkinga ezivamile ngezinjini ze-Gen 4 EA888. Lokhu kunganciphisa amandla kawoyela okugcoba futhi kungase kubangele ukuguga kwenjini ngaphambi kwesikhathi.

Ukuhlanjululwa kukawoyela kungenzeka kakhulu ezimotweni ezihlala zishayelwa amamayela ambalwa noma isikhathi eside zihlezi zingenzi lutho, ikakhulukazi esimweni sezulu esibandayo. Izindinganiso zesimanje zokukhishwa kwegesi zidinga ingxube yamafutha omoya anothile ngesikhathi sokufudumala, okwandisa amathuba okuba uphethiloli ungene ku-crankcase ngaphambi kokuhwamuka okuphelele.

Izinguquko zikawoyela zibalulekile ekuvimbeleni umonakalo ngokuhamba kwesikhathi. Ngokusebenzisa uwoyela wokwenziwa we-premium, abanikazi beVolkswagen bangagcina izimoto zabo zisebenza kahle. Ngaphezu kwalokho, ukuvumela injini ifudumale ngokuphelele ngaphambi kokuyishayela kungasiza ekwehliseni izingozi zokuhlanjululwa kukawoyela.

2. Izinkinga zesistimu ye-Mild-hybrid (izinguqulo ze-Gen 4 MHEV)

Abanye Gen 4 EA888 izinjini babe nesistimu ye-hybrid ethambile engu-48-volt engase yehluleke ngezinye izikhathi ngenxa yokuphuma kwamanzi kungazelelwe, ukuma, noma ukungasebenzi kahle.

Izinkinga ezinjalo zivame ukubangelwa isofthiwe yesistimu ye-hybrid ayihlanganisi kahle ne-ECU yenjini, okuholela ekuhlulekeni kokuxhumana noma ukungasebenzi kahle ohlelweni lokubuyisela amandla. Izinga lokushisa eleqile, njengamazinga okushisa aphakeme kakhulu noma abandayo, kungaphinda kucindezele isistimu futhi kwandise amathuba alezi zinkinga.

Lezi zinkinga zingaxazululwa ngezibuyekezo zesofthiwe ezijwayelekile endaweni edayisayo ukuze uhlelo lusebenze kahle. Kungase futhi kudingeke ukuba kushintshwe inkinga uma lokho kuwumsuka wezinkinga.

3. Izinkinga ze-Exhaust gas recirculation (EGR).

Ama-valve we-EGR nama-coolers athambekele ekubeni avale noma ehluleke, ikakhulukazi ezimotweni ezihloselwe ukusetshenziswa edolobheni elinethrafikhi yokuma nokuhamba, amabanga amafushane, namamayela ambalwa womgwaqo omkhulu.

I-EGR evalekile ingaholela ezimeni eziningi ezihlukene, kusukela ekungenzini kahle ukuya ekulahlekeni kwamandla kanye nokukhipha umoya.

Isizathu esivame kakhulu sezinkinga ze-EGR ukwakheka kwekhabhoni emagesini akhipha umoya, okunganciphisa ukugeleza kwe-EGR noma kugqwese i-valve nokupholisa.

Le nkinga ingalungiswa ngokuhlanza noma ngokushintshanisa izingxenye ezithintekile ze-EGR. Ngaphezu kwalokho, ukunakekelwa kokuvikela, njengokushayela kuthelawayeka njalo nje, kungasiza ekuqedeni amadiphozithi ekhabhoni, kwehlise ukuvala nokwandisa impilo yesistimu.

4. Izinkinga zokulawula i-Turbocharger

Amasistimu okulawula i-Turbo boost ezinjinini ze-EA888 Gen 4 angahlangabezana nezinkinga ezifana namazinga okukhulisa angahambisani, ukusheshisa ukubambezeleka, noma imoto eya “kumodi exegayo.”

Nakuba kungavamile kakhulu kunezizukulwane zangaphambili, lezi zinkinga zisengenzeka ngenxa yephutha ama-actuator kagesi noma izinzwa zokucindezela ngaphakathi kwesistimu ye-turbo. Ngokuhamba kwesikhathi, lezi zingxenye zingase zehluleke, ziphazamise ukulawulwa komfutho we-boost.

Ukushintsha i-actuator engalungile noma ukulungisa kabusha i-ECU kufanele kuxazulule le nkinga. Kubalulekile futhi ukushintsha isihlungi sikawoyela nomoya njalo ukuze ugcine i-turbo inempilo nezilawuli zokuthuthukisa ukusebenza kahle.

5. Izinkinga zevalvu yokuphefumula kwe-Crankcase

I-valve yokuphefumula ye-crankcase, ingxenye ebalulekile ye- Isistimu ye-PCV, kungehlisa isithunzi, kuphumele ekuvuzeni kukawoyela, umlilo, noma ukuhayiza okuxakile ovela enjinini. I-valve yokuphefumula ephukile nayo izoholela ekusebenziseni uwoyela ngokweqile.

Lokhu ngokuvamile kuwumphumela we-valve ephukile noma ukuwohloka kwempahla ye-diaphragm, okuzokwenza i-valve ibambelele ivuleke noma ivaleke, okuphazamisa ukulawulwa kwengcindezi ye-crankcase.

I-valve yokuphefumula ngokuvamile iyindlela eqondile futhi engabizi. Kuyancomeka futhi ukuthi uthuthukele kuzingxenye ze-PCV ezenziwe ngezinto ezihlala isikhathi eside ukuze kuvinjelwe inkinga ukuthi ingaphinde ivele.

Ungase futhi ufunde: Izinkinga Eziyisi-7 Ezivamile Zezinjini zeVolkswagen EA888

Imicabango yokugcina

Izinjini ze-EA888 Gen 3 kanye ne-Gen 4 zinikeza ibhalansi yokusebenza nokuthembeka, ne-Gen 4 equkethe ukuthuthukiswa okuphawulekayo kokushaja kwe-turbo, umjovo kaphethiloli, nokuhlanganiswa kwe-hybrid.

Nakuba zombili izizukulwane zingabadlali abaqinile, ukunakekelwa okuvamile kubalulekile ukuvimbela izinkinga ezivamile ezifana nokusetshenziswa kukawoyela, i-carbon buildup, nokwehluleka kwe-turbo.