Umahluko phakathi kwamandla aphezulu EA888 Gen3 kunye namandla aphantsi EA888 Gen3B (izizukulwana ezithathu ezinesiqingatha) eneneni mkhulu kakhulu. Ngenxa yokusetyenziswa kweenkqubo zokutsha ezahluke ngokupheleleyo kunye neethagethi zokusebenza, kukho iiyantlukwano ezininzi kwi-hardware, ngokukodwa lo mahluko ulandelayo:
1. Iinkqubo ezahlukeneyo zokutsha:
I-EA888 Gen3 ephezulu yamandla ithatha umjikelo we-Otto yendabuko, ngelixa i-EA888 Gen3B enamandla aphantsi isebenzisa umjikelezo weMiller ukunciphisa ukusetyenziswa kwamafutha, ngoko ke iipistons, amagumbi okutshisa i-cylinder head, i-cylinder head port, i-injection, i-compression ratios, njl.
Yintoni umjikelo weMiller?
I-EA888 Gen3B yamandla aphantsi isebenzisa ukuvala kwangoko kwevalve yokungena ukufezekisa ukutsha kunye nomlinganiselo wokwandiswa okukhulu kunomlinganiselo woxinzelelo, ngaloo ndlela kuphuculwe ukusebenza kakuhle kwe-thermal. Ngokubanzi, umjikelo weMiller uya kuzisa ilahleko enkulu yokusebenza. Icala lokuthatha le-injini ye-EA888 Gen3B liyilwe ngendlela yokunyusa ivalvu eguquguqukayo ye-AVS, esebenzisa itekhnoloji yokunyusa ivalvu eguquguqukayo ukulungelelanisa inxalenye yelahleko yokusebenza ebangelwa ngumjikelo weMiller. Ngoko ke, injongo yeVolkswagen ekuphuhliseni amandla aphantsi e-EA888 Gen3B kukufikelela kwinqanaba lokusetyenziswa kwamafutha e-1.4T kunye nenqanaba lokusebenza kwe-1.8T.
Umgaqo weMiller cycle
Ngokuvala i-valve kwangaphambili, umlinganiselo wokwandisa unokuba mkhulu kunomlinganiselo wokunyanzeliswa, kwaye ukulahlekelwa kokupompa kungancitshiswa.
I-Piston EA888 1.8T
Umahluko phakathi komjikelezo we-GEN3 we-Otto kunye nomjikelezo we-GEN3B Miller
(1) Umahluko kwi-valve kunye noyilo lwepiston: I-GEN3B ye-valve ye-diameter yokungena incinci kwaye umphezulu wepiston uphezulu, onokufikelela kwi-compression ratio ye-11.7 (GEN)
I-3's compression ratio yi-9.8).
(2) Ukwahluka kwi-air port kunye noyilo lweprofayili yekhamera: I-GEN3B yenzelwe i-port enkulu ye-tumble intake port kunye ne-low-lift cam profile ukufezekisa umjikelezo weMiller.
2. Umahluko kwi-valve yokunyusa i-AVS uyilo
Inkqubo yokunyusa ivalve eguquguqukayo i-AVS ye-EA888 Gen3 ephezulu yamandla ikwicala lokukhupha. Olu luyilo lwemveli lwe-AVS ye-EA888, ebisoloko injalo ukusukela kwisizukulwana sesibini. Injongo yayo ephambili kukuphucula i-torque ephantsi kunye ne-supercharger eguquguqukayo kunye nokunciphisa i-turbo lag.
Inkqubo yokunyusa ivalve eguquguqukayo i-AVS ye-EA888 Gen3B yamandla aphantsi ikwicala lokuthatha, ngokukodwa ukwenza inxalenye yelahleko yamandla ebangelwa ngumjikelezo weMiller (kodwa ayikakwazi ukufikelela kwinqanaba lokusebenza kwamandla aphezulu).
3. Umahluko kuyilo lwe-oyile-gas isahlukanisi
Isahluli se-oyile-gas yoguqulelo lwamandla aphezulu we-EA888 Gen3 luqhagamshelwe ngokuthe ngqo ukusuka kumqolo we-oyile ekrwada umahluli webloko yesilinda ukuya kumahluli we-oyile-gas entle kwintloko ye-cylinder.
Ukuze kuphunyezwe ukwahlukana okungcono kwe-oyile-gesi kunye nokunciphisa ngakumbi ukusetyenziswa kwe-oyile, inguqulo yamandla aphantsi ye-EA888 Gen3b isebenzisa i-cavity ye-shaft-side balance shaft kwi-cylinder block njenge-primary separator ye-oyile-gas, kwaye iphumelele ukwahlukana okuphambili ngokujikeleza kwe-balance shaft (isantya siphindwe kabini eso se-crankshaft kwi-oyile ye-oyile), emva koko iya kwi-oyile ye-crankshaft kwi-oyile. Olu yilo luya kuba nosetyenziso oluphantsi lweoyile.
4. Umahluko kwidayamitha ye-crankshaft
I-injini ye-GEN3B enamandla aphantsi ikhetha i-crankshaft encinci ye-shaft diameter yokunciphisa ukukhuhla kunye nokunciphisa ukusetyenziswa kwamafutha.
5. Umahluko ekusebenziseni amafutha
Ingabonwa ukuba i-low-power version ye-GEN3B yenzelwe ngokukodwa ukufezekisa ukusetyenziswa kwamafutha aphantsi kunye nokusebenza okuphezulu. Ngoko ke, ukusebenza kakuhle kwenguqu yamandla aphantsi ye-GEN3B inokuphuculwa malunga ne-8% xa kuthelekiswa nenguqulo yamandla aphezulu ye-GEN3.
Ukusetyenziswa kwamafutha enjini kuzo zonke iimeko zokusebenza kuncitshiswe kakhulu:
Ukusetyenziswa kwamafutha e-GEN3B kuphantsi kakhulu kunoko kwe-GEN3:
Shwankathela
Kukho umahluko omkhulu phakathi kwamandla aphezulu kunye aphantsi kwisizukulwana sesithathu EA888 injini. Amandla aphezulu athambekele ekusebenzeni, ngelixa amandla aphantsi enzelwe ngokukodwa ukusetyenziswa kwamafutha aphantsi.
