IZINJINI EQEDE YE: Injini iMercedes M274
ISINGENISO SOMKHIQIZO
Ukukhathazeka sekukhiqize izinjini zikaphethiloli iMercedes M274 enamandla angu-1.6 no-2.0 litres kusukela ngo-2011 futhi zizifaka ezimotweni ezinenjini yobude, njenge-C-class ne-E-class. Amamodeli afanayo amamodeli ane-transverse yeyunithi anenkomba ye-M270.
R4 Mercedes izinjini: M102, M111, M133, M139, M166, M200, M254, M260, M264, M266, M270, M271, M274, M282.
NgoNovemba 2011, kwaqala ulayini omusha wezinjini zikaphethiloli ezingu-1.6 no-2.0 litre. Kukhona ibhulokhi ye-aluminium yamasilinda angu-4 anama-cast-iron liners kanye nejakhethi yokupholisa evulekile, i-aluminium eyi-16-valve head cylinder head with hydraulic compensators, intake and exhaust dephasers, IHI AL0070 noma IHI AL0071 turbine (kuye ngokuthi inguqulo yenjini) i-air intercooler, uhlelo lomjovo oqondile, umthamo oguquguqukayo wepompo likawoyela kanye nokushayela kweketango lesikhathi. Izinjini ezingu-2.0 litre zine-Lanchester balancer ukunciphisa ukudlidliza.
Kusukela ngo-2018, amayunithi alolu chungechunge kancane kancane anikeza izinjini zomugqa we-M264 futhi manje akhiqizwa kuphela njengengxenye ye-hybrid power plant ye-GLE noma i-E-Class model.
Imininingwane
| Iminyaka yokukhiqiza | kusukela ngo-2011 |
| Ukufuduka, cc | 1595 (M 274 OF 16 AL) 1991 (M 274 OF 20 AL) |
| Isistimu yamafutha | umjovo oqondile |
| Ukukhipha amandla, hp | 129 – 156 (M 274 DE 16 AL) 156 – 245 (M 274 DE 20 AL) 279 – 333 kanye nemoto kagesi |
| Okukhipha i-torque, Nm | 210 – 250 (M 274 DE 16 AL) 270 – 370 (M 274 DE 20 AL) 600 – 700 kanye nemoto kagesi |
| I-cylinder block | i-aluminium R4 |
| Vimba ikhanda | i-aluminium 16v |
| I-cylinder bore, mm | 83 |
| I-Piston stroke, mm | 73.7 (M 274 DE 16 AL) 92 (M 274 DE 20 AL) |
| Isilinganiso sokucindezela | 10.3 (M 274 DE 16 AL) 9.8 (M 274 DE 20 AL) |
| Ama-hydraulic lifters | yebo |
| Isikhathi sokushayela | iketango |
| Isilawuli sesigaba | yebo |
| I-Turbocharging | yebo |
| Amafutha enjini anconyiwe | 5W-30, 5W-40 |
| Umthamo kawoyela wenjini, ilitha | 6.0 - 7.0 |
| Uhlobo lwamafutha | uphethiloli |
| Amazinga e-Euro | EURO 5/6 |
| Ukusetshenziswa kukaphethiloli, L/100 km (yeMercedes C 250 2017) - idolobha - umgwaqo omkhulu - kuhlangene | 7.9 5.2 6.2 |
| Impilo yenjini, km | ~ 300 000 |
| Isisindo, kg | 137 |
Injini ifakwe ku:
● I-Mercedes C-Class W204 ngo-2012 - 2015; I-C-Class W205 ngo-2014 - 2020;
● I-Mercedes E-Class W212 ngo-2013 - 2016; I-E-Class W213 kusukela ngo-2016;
● Mercedes GLC-Class X253 kusukela 2015;
● I-Mercedes GLE-Class W167 kusukela ngo-2019;
● I-Mercedes GLK-Class X204 ngo-2013 - 2015;
● I-Mercedes SLC-Class R172in 2015 - 2020;
● I-Mercedes V-Class W447 ngo-2015 - 2019;
● I-Infiniti Q50 1 (V37) ngo-2014 – 2019;
● I-Infiniti Q60 2 (CV37) ngo-2016 – 2018.
Ububi injini Mercedes M274
Ezinjini kuze kube ngu-2014, abalawuli besigaba baqala ukuqhekeka ngokushesha, khona-ke umkhiqizi waphothula ukuklama futhi insiza yanda yaba ngu-150 - 200 km ayizinkulungwane. Cishe ngesikhathi esifanayo, uchungechunge lwezikhathi luyakhishwa futhi abaningi bayalushintsha ngesikhathi esifanayo.
Abanikazi abaningi bezimoto ezinenjini yalo mndeni bakhala ngezinkinga zokuqala futhi isizathu esiyinhloko ukususwa kwe-impulse disk ehlobene ne-axis camshaft. Ngokuvamile lokhu kusayinwa yiphutha kunzwa yendawo ye-camshaft.
Ngo-2015, izinjini zalolu chungechunge zathuthukiswa futhi zaba nomnotho kancane, kodwa lokhu kwaholela ekuqhumeni okuphindaphindiwe ngokubhujiswa kwama-pistons. I-Piezo direct injection injection nayo ihlushwa uphethiloli wekhwalithi ephansi lapha.
Kudingekile ukuqapha ngokucophelela isimo sesistimu yokupholisa yeyunithi yamandla, ngoba inhloko ye-block ingaholela lapha ngisho nasekushiseni okungekude kakhulu. Inkinga ibhebhethekiswa ukwethembeka okumpofu kwe-thermostat nepompo yamanzi.
Ukuvuza kuvame ukuvela ngaphansi kwesembozo se-valve ngenxa ye-valve yokufaka umoya ye-crankcase ebambekile, kanye nangaphansi kwesivalo sikawoyela ongaphambili we-crankshaft noma nge-gasket yesishintshi sokushisa. Ngenxa yokwephuka kwezintambo, i-valve yepompo kawoyela eshintshashintshayo iyaba yiqhwa, isikhangisi siyavaleka, amapayipi kaphethiloli avame ukuvuza kanye ne-actuator kumaweji e-turbine.