I-injini ye-EA888 evela kwiQela leVolkswagen idume ngokuba namandla aphezulu, ayonga amafutha, kwaye ithembekile. Kwaye kangangamashumi eminyaka, le njini iye yahlaziywa ngokulandelelanayo.
Gen 3 kunye Gen 4 zithandwa ingakumbi kubaqhubi mihla, kuquka Golf GTI kunye Audi A3. Kule post, siza kuxoxa ngeminye yeyantlukwano phakathi kwezi zizukulwana zibini kunye neminye imiba eqhelekileyo ekhoyo kwinguqulelo yeGen 4.
Isiqulatho
Umahluko phakathi kwe-EA888 Gen 3 kunye ne-Gen 4 iinjini
1. Intloko yesilinda kunye noyilo lokukhupha
2. Inkqubo yokutofa amafutha
3. Uloliwe weValve kunye nohlengahlengiso lwecamshaft
4. I-Turbocharger
5. Iinkqubo zokupholisa
6. Ukudityaniswa kwe-mild-hybrid
Eqhelekileyo EA888 Gen 4 imiba injini
1. Ukuhlanjululwa kweoli
2. Imiba yenkqubo ye-mild-hybrid (iinguqulelo zeGen 4 MHEV)
3. Imiba ye-Exhaust gas recirculation (EGR).
4. I-Turbocharger yonyusa iingxaki zolawulo
5. Imiba yevalvu yokuphefumla yeCrankcase
Iingcamango zokugqibela
Umahluko phakathi kwe-EA888 Gen 3 kunye ne-Gen 4 iinjini
1. Intloko yesilinda kunye noyilo lokukhupha
Gen 3
I-EA888 Gen 3 inikezela nge-exhaust manifold edibeneyo (IEM) eyakhelwe kwintloko yesilinda. Olu tshintsho lwenza ukuba igesi ephumayo ihambe umgama omfutshane, inciphisa i-turbo lag kunye nokuphucula. turbocharger mpendulo.
Ikwanceda i-injini ukuba igcine amaqondo obushushu afanelekileyo okusebenza ngokujikelezisa iigesi zokuphuma kwi-injini yokupholisa, iyenze isebenze ngokufanelekileyo. Nangona kunjalo, ngelixa lusebenza kakuhle, olu yilo lushiye indawo yokuphucula ukusebenza kakuhle kwe-thermal kunye nolawulo olukhutshwayo.
Gen 4
IGen 4 ihamba inyathelo elinye ukuya phambili kwi-built-in qeda ubuninzi, ukongeza iziteshi ezininzi zokupholisa kunye nokuma okuhlangeneyo. Olu lungelelwaniso lujongisiweyo lwehlisa inertia ye-thermal, ivumela i-injini ukuba ifudumale ngokukhawuleza kwaye ifezekise uqoqosho olungcono lwamafutha xa iqala ubushushu obuphantsi.
Ikwadibanisa kakuhle nezixhobo zonyango lwasemva (ezifana nezihluzi zenxalenye kunye nabaguquleli be-catalytic), okubaluleke kakhulu ukuthotyelwa kwemigangatho engqongqo yokukhutshwa njenge-Euro 6d kunye ne-WLTP.
2. Inkqubo yokutofa amafutha
Gen 3
Ukunceda kwiingxaki zokwakhiwa kwekhabhoni eziqhelekileyo ngeenjini ze-injection ngokuthe ngqo, i-Gen 3 ifake inkqubo ye-double-injection equka i-injection ngqo (DI) kunye ne-port fuel injection (PFI).
I-PFI icoca iivalvu zokungena ngokutshiza amafutha kwi- ukutya okuninzi, ngelixa i-DI iqinisekisa ubungakanani obufanelekileyo bamafutha bungena kwigumbi lokutsha. Le nkqubo yonyusa ukusebenza kunye nobomi obude bokutsha kwisithuthi esinentsebenzo ephezulu njengeGolf R.
Gen 4
I-Gen 4 inenkqubo ye-double-injection kodwa i-tweaks ukuhanjiswa kwepetroli ngokudibanisa ii-injection eziphezulu ezifikelela kwi-350 bar (xa kuthelekiswa ne- ~ 200 bar kwi-Gen 3). Oku kwandisa i-atomization ye-fuel, ekhokelela ekutshiseni okucocekileyo, i-throttle ephendulayo, kunye namandla amaninzi. Ngapha koko, bakwacutha ukukhutshwa kwento encinci, eyenza iGen 4 ibe nobuhlobo ngakumbi kokusingqongileyo kuneGen 3.
3. Uloliwe weValve kunye nohlengahlengiso lwecamshaft
Gen 3
I-Gen 3 ibonisa ixesha le-valve eguquguqukayo (VVT) kuzo zombini ukungenisa kunye nokukhupha i-camshafts. I-injini ilawula ixesha levalvu kumthwalo we-injini kunye nesantya, isenza uninzi lwazo zombini umoya kunye nokutsha ngeenzame zokwandisa amandla kunye nokusetyenziswa kwamafutha. Nangona kunjalo, uluhlu lohlengahlengiso luncinci xa luthelekiswa noyilo olutsha.
Gen 4
Indlela yokumisa ikhamera kwi-Gen 4 icocwe kakhulu kwaye inika iinketho ezininzi zokwenza ngokwezifiso. Oku kuvumela ukulungiswa kakuhle kwexesha levalvu kunye noqoqosho olungcono lwamafutha kwii-RPM eziphantsi kunye namandla kwiiRPM eziphezulu. Olu phawu lukwanceda ekunyuseni unikezelo lwamandla kunye nokuphendula kwe-throttle.
4. I-Turbocharger
Gen 3
I-injini yeGen 3 isebenzisa i-turbocharger eskrolayo enye, ibonelela ngetorque eninzi enesiphelo esisezantsi kunye namandla aphezulu. Nangona kunjalo, i-turbos yokuskrola enye ayisebenzi kakuhle ngenxa yokuba i-pulse yokukhupha iyadibana, icotha ukusebenza ngokubanzi kunye nokuphendula kwe-turbo kwiimeko ezithile.
Gen 4
Gen 4 itshintshela ku-a i-twin-skrola i-turbo, eyahlula impembelelo yokukhupha kwiibini zeesilinda (okt, 1-4 kunye ne-2-3). Olu lungiselelo lunceda ekukhupheni, ngoko ke i-turbo ijikeleza ngokukhawuleza kwaye ine-turbo lag encinci. Isiphumo kukuphucuka okubonakalayo kwitorque ephantsi kunye nempendulo yoluhlu oluphakathi oluluncedo kwimihla ngemihla kunye nokuqhuba ukusebenza.
5. Iinkqubo zokupholisa
Gen 3
Injini yeGen 3 TSI inenkqubo yokupholisa eqhelekileyo apho enye i-thermostat ilawula ubushushu benjini. Nangona yayithembisa, yayingachanekanga njengeenkqubo zanamhlanje ekusasazeni ubushushu phakathi kwebhloko yesilinda kunye nentloko.
Gen 4
I-Gen 4 ibonisa iteknoloji yokuqhaqhaqhaqhaqhaqhaqhaqhaqhaqha, evumela ukupholisa okuzimeleyo kwebhloko ye-cylinder kunye nentloko. Oku kwenza i-injini ifikelele kwiqondo lokushisa ngokukhawuleza ngelixa igcina ukupholisa okufanelekileyo ngexesha leemeko zomthwalo ophezulu. Isiphumo kukuba ukusebenza kakuhle kwe-thermal kunye nokunciphisa ukuguga kwe-injini ngokuhamba kwexesha.
6. Ukudityaniswa kwe-mild-hybrid
Gen 3
I-Gen 3 ayizange iyilwe kunye nokufakelwa kombane engqondweni, ixhomekeke ngokupheleleyo kuyilo lwe-injini yokutsha. Ngelixa isebenza kakuhle ngexesha layo, ayinazo izinto ezifana ne-braking yokuvuselela okanye unxweme, eziqhelekileyo kwiinjini zanamhlanje.
Gen 4
I-Gen 4 yenzelwe ukusebenza kunye neenkqubo ezi-mild-hybrid ezibonisa i-48-volt ye-architecture yombane. Le nkqubo yenza ukuba iimpawu ezifana nokuyeka, imo yonxweme, kunye ne-braking yokuvuselela, ukunciphisa ukusetyenziswa kwamafutha kunye nokukhutshwa.
Umzekelo, xa uhamba ngenqanawa, i-injini inokucima ngokuzenzekelayo kwaye isebenzise i-mild-hybrid kwizixhobo ezincedisayo.
Ukufunda okuqhubekayo: Yonke into omawuyazi malunga neeNjini ze-EA888
Eqhelekileyo EA888 Gen 4 imiba injini
Injini ye-EA888 Gen 3 yayinemiba ethile eyenze ukuba, kwezinye iimeko, ingathembekanga. Oku kubandakanya ukusetyenziswa kweoyile egqithisileyo, ukusilela kwekhonkco lexesha, imiba ye-thermostat, ukwakhiwa kwekhabhoni, kunye neengxaki ze-turbo.
Ngophuhliso lwe-injini yesine ye-EA888, uninzi lwemiba ngeGen 3 yasonjululwa. Ngaphandle kokuthembeka ngakumbi, iGen 4 isenemiba ethile. Nazi ezinye zezona zixhaphakileyo:
1. Ukuhlanjululwa kweoli
Ukuhlanjululwa kwe-oyile, okwenzeka xa amafutha angatshiswanga exutywa ne-oyile ye-injini, ngomnye wemiba eqhelekileyo kwiinjini ze-Gen 4 EA888. Oku kunokunciphisa isakhono se-oyile yokuthambisa kwaye kunokubangela ukuba injini iguge phambi kwexesha.
Ukuhlanjululwa kwe-oyile kunokwenzeka ukuba kwenzeke kwizithuthi ezihlala ziqhutywa iimayile ezimbalwa okanye ixesha elide zihleli zingasebenzi, ngakumbi kwimozulu ebandayo. Imigangatho yale mihla yokukhupha amafutha ifuna imixube yamafutha omoya atyebileyo ngexesha lokufudumeza, inyusa amathuba okuba amafutha angene kwikhrankcase phambi kokuba umphunga uphelele.
Utshintsho lweoyile lubalulekile ekuthinteleni umonakalo ekuhambeni kwexesha. Ngokusebenzisa iioli zokwenziwa zepremiyamu, abanini beVolkswagen banokugcina izithuthi zabo zihamba kakuhle. Ngaphezu koko, ukuvumela i-injini ukuba ifudumale ngokupheleleyo phambi kokuba uyiqhube kunokunceda ukunciphisa umngcipheko wokuncibilika kwe-oyile.
2. Imiba yenkqubo ye-mild-hybrid (iinguqulelo zeGen 4 MHEV)
ezinye Gen 4 EA888 iinjini ube ne-48-volt ethambileyo ye-hybrid system enokuthi ngamanye amaxesha ingaphumeleli ngenxa yokukhupha ibhetri ngokukhawuleza, ukuma, okanye ukungasebenzi kakuhle.
Iingxaki ezinjalo zihlala zibangelwa yi-software ye-hybrid system engadibanisi ngokufanelekileyo kunye ne-injini ye-ECU, okubangela ukungaphumeleli konxibelelwano okanye ukungasebenzi kakuhle kwinkqubo yokubuyisela amandla. Amaqondo obushushu agqithisileyo, afana nobushushu obugqithisileyo okanye obubandayo, nawo anokuyicinezela inkqubo kwaye anyuse amathuba ezi ngxaki.
Ezi ngxaki zinokusonjululwa ngohlaziyo lwesoftware rhoqo kumthengisi ukuze inkqubo iqhube kakuhle. Kusenokuba yimfuneko ukuba kufakwe enye endaweni yengxaki ukuba loo nto ingunozala wemiba.
3. Imiba ye-Exhaust gas recirculation (EGR).
Izivalo ze-EGR kunye nezinto ezipholileyo zithande ukuvaleka okanye ukusilela, ngakumbi kwiimoto ezenzelwe ukusetyenziswa edolophini ngokumisa nokuhamba, imigama emifutshane, kunye neemayile zohola wendlela ezimbalwa.
I-EGR evalekileyo inokukhokelela kwiimeko ezininzi ezahlukeneyo, ukusuka ekubambeni kakubi ukuya ekulahlekeni kwamandla kunye nokukhutshwa.
Esona sizathu sixhaphakileyo seengxaki ze-EGR kukwakhiwa kwekhabhoni kwiigesi zokukhupha, ezinokunciphisa ukuhamba kwe-EGR okanye ukugrulisa ivalve kunye nepholile.
Le ngxaki inokulungiswa ngokucoca okanye ukutshintsha amacandelo e-EGR achaphazelekayo. Ukongeza, ukugcinwa kokuthintela, njengokuqhuba kuhola wendlela rhoqo, kunokunceda ukuphelisa idiphozithi yekhabhoni, ukunciphisa ukuvala kunye nokwandisa ubomi benkqubo.
4. I-Turbocharger yonyusa iingxaki zolawulo
Iinkqubo zolawulo lokunyusa iTurbo kwii-injini ze-EA888 Gen 4 zinokufumana imiba enje ngamanqanaba angahambelaniyo okunyusa, ukulibaziseka kwesantya, okanye isithuthi esiya “kwimowudi eqhwalelayo.”
Nangona kunqabile kakhulu kunezizukulwana zangaphambili, ezi ngxaki zisenokwenzeka ngenxa yempazamo ii-activators zombane okanye iinzwa zoxinzelelo ngaphakathi kwenkqubo ye-turbo. Ngokuhamba kwexesha, la macandelo anokusilela, aphazamise ukulawulwa koxinzelelo lwe-boost.
Ukutshintsha i-activator engasebenziyo okanye ukulungisa kwakhona i-ECU kufuneka kulungiswe le ngxaki. Kukwabalulekile ukutshintsha i-oyile kunye nesihluzo somoya rhoqo ukuze ugcine i-turbo isempilweni kunye nolawulo lokunyusa lusebenza ngokufanelekileyo.
5. Imiba yevalvu yokuphefumla yeCrankcase
Ivalve yokuphefumla yecrankcase, inxalenye ebalulekileyo ye Inkqubo yePCV, isenokuthomalalisa, nto leyo ekhokelela ekuvuzeni kweoli, ukuvutha komlilo, okanye ukufutha ngendlela engaqhelekanga kwindawo yenjini. Ivalve yokuphefumla eyaphukileyo nayo iya kubangela ukusetyenziswa kwe-oyile ngokugqithisileyo.
Oku kudla ngokuba ngumphumo wevalve eyaphukileyo okanye ukuwohloka kwezinto ze-diaphragm, eziza kwenza i-valve ivale okanye ivaliwe, ephazamisa ukulawulwa koxinzelelo lwe-crankcase.
Ivalve yokuphefumla iqhelekile kwaye iyindawo ethe ngqo kwaye engabizi. Kukwacetyiswa ukuba uphucule kumacandelo e-PCV enziwe kwizinto ezihlala ixesha elide ukunqanda umba ukuba ungaphindi.
Unokufunda: 7 Iingxaki eziqhelekileyo zeeNjini zeVolkswagen EA888
Iingcamango zokugqibela
I-EA888 Gen 3 kunye ne-Gen 4 iinjini zinika ulungelelwaniso lokusebenza kunye nokuthembeka, kunye neGen 4 ebonisa uhlaziyo oluphawulekayo kwi-turbocharging, inaliti ye-fuel, kunye nokuhlanganiswa kwe-hybrid.
Ngelixa zombini izizukulwana zingabadlali abanamandla, ukugcinwa rhoqo kubalulekile ukuthintela imiba eqhelekileyo efana nokusetyenziswa kweoyile, i-carbon buildup, kunye nokusilela kwe-turbo.
