Amakhasimende akwaMercedes-Benz ngokuzayo azoba nenketho yokukhetha phakathi kwama-powertrains amabili amasha ekwakhiweni kwezimoto ezizayo. I-CLA ezayo izohlinzekwa njengemoto kagesi esebenza kahle kakhulu futhi njengengxube eyongayo.
I-Mercedes-Benz ibeke izindinganiso ezintsha zokusebenza kahle ngenkundla yobuchwepheshe ye-VISION EQXX. Manje, inkampani ihlanganisa imininingwane evela kule phrojekthi ezimotweni zayo ezikhiqiza uchungechunge. Okuhamba phambili yi-CLA esebenza ngogesi wonke, imodeli yokuqala ezosuselwa kuMercedes-Benz Modular Architecture (MMA).
Enhliziyweni yalesi sakhiwo semoto esishintshashintshashintshayo kukhona i-skateboard chassis—umhlangano waphansi oklanyelwe kakhulu izimoto zikagesi, okuhlanganisa idrayivu ehambisanayo nezingxenye ze-chassis. Ngenkathi ukwakheka okuyisisekelo kuhlala kungaguquki, ukwakheka komzimba kuzohluka. E-US, i-Mercedes-Benz ihlela umndeni wamamodeli amathathu esewonke esigabeni esisanda kuchazwa sezinga lokungena, okuhlanganisa i-CLA njengemoto enezicabha ezine kanye nama-SUV amabili.
I-Mercedes-Benz izoqhubeka nokusebenzisa indlela ehlakaniphile ngedizayini ye-skateboard esheshayo yemindeni yamamodeli wesikhathi esizayo kuwo wonke amasegimenti. Ngokugxila kukho kokubili ukushayela kukagesi kanye nesofthiwe yezimoto, inkampani iye yandisa kakhulu imizamo yayo yokuthuthukisa kulezi zindawo. Lokhu kubandakanya ukuvulwa kwakamuva kwe-eCampus e-Stuttgart-Untertürkheim, isikhungo samakhono esinikezelwe ukuthuthukiswa kwamaseli namabhethri ezimoto zikagesi zesikhathi esizayo zomkhiqizo. Inhloso ukuthuthukisa inhlanganisela yamakhemikhali emisha kanye nokwandisa izinqubo zokukhiqiza zamaseli asebenza kahle kakhulu nge-Mercedes-Benz DNA, ukwehlisa izindleko zebhethri ngaphezu kwama-30% eminyakeni ezayo.
Izingxenye zokuthuthukiswa nokuhlolwa kwamamodeli amasha e-MMA zenzekile ku-Electric Software Hub (ESH). Lesi sikhungo esise-Mercedes-Benz Technology Centre (MTC) e-Sindelfingen sihlanganisa ndawonye isofthiwe eminingi, ihadiwe, ukuhlanganiswa kwesistimu nemisebenzi yokuhlola ngaphansi kophahla olulodwa. Yonke inqubo kagesi/ye-elekthronikhi yokuhlanganisa yokuthuthukiswa kwemoto ibonakala ngaphakathi kwe-ESH iqinisekisa ukuthi zonke izingxenye ze-hardware ezintsha nezingxenye zesofthiwe zisebenzisana kahle.
Imodeli yokuqala ye-MMA. Ngokusebenza kwayo kahle kwamandla, i-MMA eguquguqukayo kakhulu iphawula isinyathelo esilandelayo se-Mercedes-Benz esibheke kwikusasa likagesi ngokugcwele. I-Electric Drive Unit (EDU 2.0) ingeyokuqala esizukulwaneni esisha samayunithi okushayela ugesi avela kwaMercedes-Benz, aklanywe njengohlelo oludidiyelwe kakhulu lwemodular.
Ngokushayela okuyinhloko ku-axle yangemuva ukuze idonse kahle nokubamba, i-Mercedes-Benz manje yethula ukulungiselelwa kokushayela okuvame ukubonakala kwezimoto ezimaphakathi nesigaba sokunethezeka engxenyeni yezinga lokungena. Iyunithi yokushayela kagesi engu-200-kW, enomshini ovumelanayo (PSM) osemuva, yathuthukiswa ngaphakathi endlini ngonjiniyela bakwaMercedes-Benz.
Ozibuthe be-rotor bahlelwe ngendlela eyi-double-V. Esinye isici ukusonga kwe-stator ngamakhoyili alulekile. Ndawonye, lezi zinyathelo zifaka isandla ekwenzeni ukushayela okuthule ngendlela emangalisayo. I-PSM futhi isebenzisa izinto zomhlaba ezingavamile kakhulu kunezizukulwane zezimoto zangaphambilini, yehlisa ingxenye yomhlaba osindayo ongavamile icishe ifinyelele kuqanda iphesenti. Ama-electronics asebenza kahle kakhulu afaka i-silicon carbide inverter ukuze kusetshenziswe amandla ngendlela efanele.
I-architecture ihlanganisa no-gearbox onamagiya amabili ku-axle yangemuva, ehlinzeka ngenhlanganisela ye-dynamics nokusebenza kahle. Igiya lokuqala, elinesilinganiso esifushane esingu-11:1, linikeza ukusheshisa okuhle kakhulu zisuka nje kanye nokusebenza kahle okuvelele ekushayeleni emadolobheni. Igiya lesibili (isilinganiso segiya: 5:1) lenzelwe ukulethwa kwamandla ngesivinini esiphezulu kanye nokusebenza kahle okuphezulu emgwaqeni onguthelawayeka okuvumela isivinini esiphezulu esingafika ku-210 km/h (130mph).
Amashifu amaphuzu ancike esimweni sokushayela kanye nohlelo lokushayela olukhethiwe. I-optimizer eku-inthanethi ihlale iwajwayelanisa nemingcele yamanje njenge-SoC yebhethri, ukusebenza kanye nezidingo zomshayeli. Ukudonsa kufezwa ngezinzipho (1st amagiya) noma amadiski (2nd
igiya). I-transmission ine-insulation ekhethekile yokushisa.
Izinhlobo ze-4MATIC zifakelwe injini kagesi engu-80-kW ku-axle yangaphambili. Ukwandisa ukusebenza kahle, le moto iphinde ihlanganise inverter yesizukulwane esilandelayo ne-silicon carbide (SiC) futhi yakhelwe njengomshini wokuvumelanisa unomphela (PSM). Imoto kagesi yangaphambili isebenza njenge-boost drive ihlanganyela kuphela lapho amandla ahambisanayo noma ukudonsa kuyadingeka. Lo msebenzi wenziwa iyunithi yokunqamula (i-DCU), iMercedes-Benz manje eyisebenzisa okokuqala ekilasini elihlangene. Ukuze usebenze ngokuqhubekayo, i-DCU ingakwazi ukuhlukanisa injini kagesi ku-axle yangaphambili ngesivinini sombani lapho isidingo siphansi, ukuze injini kagesi nezingxenye zokudlulisela kumile. Lokhu kunciphisa ukulahleka kwe-axle yangaphambili ngo-90% futhi kwandisa ububanzi. Esimeni se-Concept CLA Class, lokhu kuzofanelana nebanga elingaphezu kwamakhilomitha angu-750 (466 miles) (WLTP), elinokusetshenziswa kwamandla okungu-12 kWh/100 km (5.2 mi/kWh).
Le sistimu esebenza kahle kakhulu iphinde ivumele isiqu sangaphambili (i-frunk), kuyilapho iqinisekisa izinga eliphezulu lokuphepha kokuphahlazeka ngendawo yokugoba enqunywe kusengaphambili kuhlaka. I-EDU ixhunywe emzimbeni ngamaleveli amabili ane-elastomer kanye nohlaka olungeziwe lokusekela. Lokhu kunqamula umsindo ohambisana nesakhiwo esiphindwe kabili, phakathi kwezinye izinto, kubangela ukuziphatha okuhle kwe-NVH (umsindo, ukudlidliza kanye nokhahlo).
Ama-electronics asebenza kahle kakhulu afakwe isiguquli se-silicon carbide (SiC) ukuze asetshenziswe kahle kakhulu amandla. Kokubili ukulawulwa kokudlulisa kanye ne-inverter kuhlanganiswe nengxenye eyodwa. Iyunithi yokushayela yakhiwe e-Untertürkheim, lapho i-Mercedes-Benz ithuthukise amasistimu okushayela amaningi amasha eminyakeni edlule.
I-EDU 2.0 ishaya ibhalansi phakathi kwetorque ephezulu, isivinini esiphezulu nokusebenza kahle okuyisibonelo, ikakhulukazi ezimweni zokushayela zomhlaba wangempela. I-torque ephezulu iqinisekisa ukusebenza kokushayela okuguquguqukayo, kungakhathaliseki ukuthi ubhekana nokudlula ezintabeni noma ama-trailer okudonsa. Enye inzuzo idizayini ehlangene engavamile ye-EDU 2.0, ezuzisa ubukhulu bangaphakathi kanye nevolumu ye-trunk yangemuva.
I-Mercedes-Benz yethula i-architecture kagesi engu-800-volt okokuqala ngqa, ikhulise kokubili ukusebenza kahle nokusebenza. Ngokuhlangana nesizukulwane esisha sebhethri, le sistimu inganciphisa kakhulu isikhathi sokushaja. Emaminithini angu-10 nje, i-Concept CLA Class ingathola ibanga elingafika kumakhilomitha angu-300 (186 miles) ngokusebenzisa ukushaja okusheshayo kwe-DC. Ngokugxila ekusebenzeni kahle kwesikhathi, i-CLA isivele isebenze kahle kakhulu kunezinye izimoto zikagesi ezisondelene nokukhiqiza emzamweni wokuqopha: Ekuhlolweni kwamahora angu-24 e-Nardò eningizimu ye-Italy, imodeli yangaphambi kochungechunge ihlanganise ncamashi amakhilomitha angu-3,717 (2,309 miles) emahoreni angu-24. Ukudluliswa kwamagiya amabili ku-main drive ku-axle yangemuva akugcini nje ngokunikela ekusebenzeni kahle, kodwa futhi kwenza ukusebenza kokushayela okuguquguqukayo ngokwedlulele.
Amaseli ebhethri ye-premium anokuqukethwe kwamandla asebenzisekayo afinyelela ku-85 kWh ane-anode lapho i-silicon oxide yengezwa khona kugraphite. Uma kuqhathaniswa nebhethri langaphambili eline-graphite anode evamile, ukuminyana kwamandla adonsela phansi kufika ku-20% ngaphezulu. Ezingeni leseli, ukuminyana kwamandla wevolumu yekhemistri yeseli ngu-680 Wh/l (watt-hour/litre). Ukusetshenziswa kwempahla eluhlaza kuye kwathuthukiswa futhi kwancishiswa ukuze kuthuthukiswe ukusimama, ikakhulukazi ngokuncipha okukhulu kwenani le-cobalt.
Inguqulo ye-Hybrid. Lo mndeni omusha uzophinde utholakale njenge-hybrid enobuchwepheshe be-48-volt kanye nenjini kagesi enamandla angu-20 kW drive ehlanganiswe ku-transmission. I-drivetrain esebenza kahle kakhulu yathuthukiswa onjiniyela bakwaMercedes-Benz eJalimane.
Ukubumbana okuhlaba umxhwele kwedizayini yemoto kanye nebhokisi likagiya kungabangelwa ukusondela kwamasilinda kanye nokuhlelwa okuseceleni kwemoto kagesi edidiyelwe. Injini, i-inverter, kanye nokudlulisa ndawonye kwakha iyunithi edidiyelwe kakhulu. Ibhethri esanda kwakhiwa engu-48-volt enobuchwepheshe be-lithium-ion inikeza okuqukethwe kwamandla afika ku-1.3 kWh. Idizayini ihlangene ngendlela emangalisayo ehlanganisa amaseli ebhethri nesiguquli se-DC/DC kulokho okwaziwa ngokuthi i-flat pack.
Injini kagesi inikeza ukwesekwa okuhlakaniphile ebangeni lejubane eliphansi. Amaphrofayili esivinini angashintshi ambozwa ngogesi, okusho ukuthi le modi yokusebenza izoqeda ukusebenza okungasebenzi kahle. Ukululama kanye nekhono lokushayela ngogesi ngesivinini sasemadolobheni kuthuthukisa ukusebenza kahle kwe-drivetrain. Ukwengeza, ukuhamba ngogesi kungenzeka ngesivinini esingafika ku-100 km/h (62 mph). Isici esikhethekile: injini ikwazi ukuphinda isebenze kuwo wonke amagiya ayisishiyagalombili, ibuyise amandla afinyelela ku-25 kW.
Ngenxa yezici ze-torque ezingeziwe zenjini evuthayo nemoto kagesi, i-torque ephezulu ifinyelelwa ngesivinini esibanzi. Ngaphezu kwalokho, injini yomlilo ingaqalwa ngokuphelele ngenjini kagesi futhi ihlukanise i-clutch iqede isidingo se-pinion starter evamile. I-start-stop function yenza injini iqale icishe ingabonakali kumshayeli.
Injini kagesi kanye ne-inverter kuhlanganiswe emshinini omusha, ohlangene kakhulu wamagiya ayisishiyagalombili we-dual-clutch transmission (8F-eDCT). Le ntuthuko yaziwa njenge-eDCT ngenxa yokuthi injini kagesi ihlanganiswe ku-transmission futhi uhlelo lwemishini lulawulwa nge-electrohydraulically. Injini kagesi isebenza yomibili imigqa yokubamba. Amandla axhunyiwe futhi anqanyuliwe ngosizo lwama-clutch amabili okushayela kanye ne-clutch ehlukanisayo. Izilinganiso zezigaba ze-gearshift eziyisishiyagalombili zisabalele kakhulu, okuvumela amaphuzu okusebenza kwenjini ukuthi athuthukiswe ukuze asebenze kangcono.
Injini evuthayo iyinjini esanda kwakhiwa kaphethiloli yakwaMercedes-Benz enamasilinda amane eshintshwayo engu-1.5 litres. Iyunithi enegama elithi M 252 elomndeni wakwaFAME (Family of Modular Engines) oklanyelwe uhla olubanzi lwezicelo zezimoto. Izici ezijwayelekile zomndeni wenjini ye-FAME zifaka ikhrankcase ye-aluminium yonke enobuchwepheshe be-NANOSLIDE, ikhanda lesilinda elihlanganiswe kancane ne-turbocharger ene-segment turbine enokuxhumeka okuskrola okushintshwayo. Okunye okugqamile kufaka phakathi intambo yomoya yokushaja ehlangene kanye nesistimu ye-exhaust ebekwe eduze kwenjini ekwakhiweni kwebhokisi elilodwa, elilungiselelwa izindinganiso zokukhipha umoya wesikhathi esizayo.
Umqondo we-compressor yesiqandisi kagesi enobuchwepheshe be-48-volt ethathwe ku-M 256 yehlisa amandla okungqubuzana futhi yenza imoto ibe ne-air-conditioning ngisho nalapho imile futhi isebenza kuwo wonke ugesi.
I-hybrid drivetrain izotholakala namandla angu-140 kW uma yethulwa e-US ihambisana no-20 kW wamandla okushayela ugesi. Njengoba kunikezwe ukususwa kwenjini kwe-1,496 cm3 (91.1 ku3), lokhu kumelela umthamo omkhulu ngelitha ngalinye. Abathengi bazokwazi ukukhetha phakathi kwe-front-wheel drive ne-4MATIC all-wheel drive.
Ngenxa yezizathu zokusebenza kahle, injini kaphethiloli isebenzisa inqubo yokuvutha esekelwe kumjikelezo weMiller ogcina ukusetshenziswa kukaphethiloli kuphansi, ikakhulukazi ebangeni lomthwalo oyingxenye—isimo sokushayela esivame kakhulu ekusetshenzisweni kwansuku zonke. Ukuvalwa kwangaphambi kwesikhathi ngokuqhathaniswa kwama-valve okuphuza kunciphisa ukulahleka kwe-throttle futhi kunika amandla isilinganiso esiphezulu sokuminyanisa esingu-12:1.
Iyunithi entsha ehambisa injini inobukhulu obuhlangene futhi ifakwe ngokuphambana emotweni phakathi kwamaqunu esiteringi. Inzuzo eyinhloko ukusebenza kwe-NVH (Noise, Vibration, Harshness) okuhlukile. Injini ye-M 252 ngokwemvelo inenzuzo, ngoba i-Mercedes-Benz isebenzisa amasilinda amane esikhundleni samathathu. Ngaphezu kwalokho, injini ifakwe iphakethe le-NVH eliphelele elihlanganisa amagwebu namakhava ukuze kuqhutshekwe nokunciphisa ukuphuma komsindo.
Umqondo wokuhlanganisa i-bulkhead bulkhead, ojwayelekile kusukela ezigabeni eziphakeme zezimoto, nawo unwetshiwe endaweni eseceleni ye-A-pillar kanye nendawo yaphansi ukuze kusebenze okuthule nakakhulu.
Umthombo ovela I-Green Car Congress
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