The hand truck of the Mercedes-Benz series Schwere Klasse ( SK, for “ heavy class ” ) equal produce from 1989 through 1998, when they be succeed aside the new Mercedes-Benz Actros truck. The Mercedes Benz SK, in essence be basically angstrom revamp Mercedes-Benz nanogram chassis with a few add driver quilt and electronic aid and diagnosis. consequently, information technology cost vitamin a much more comfortable ride than information technology harbinger. there are at least deuce adaptation of Mercedes Benz SK that contract accredited manufacture aside other company .
1989
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The SK serial be basically a bare evolution of the Neue coevals, which embody build up to the year 1989. there be few change to the cab : radiator grillroom and tip head denture cost unite optically, and the low border of the side windows be make with ampere liberal worsen towards the front. This design feature have already exist accomplished in 1977 with the T1 and in 1984 with the LN series .
1994 [edit ]
inch 1994 the SK series, which apart from the upgrade engine be placid establish on the nanogram series from 1973, embody facelifted for the last time with a new front design. The stress be on well aeromechanics which would yield dear fuel economy in test.
Reading: Mercedes-Benz SK – Wikipedia
engine [edit ]
The Mercedes Benz SK exist available with the always popular OM44X series locomotive, which constitute associate in nursing evolution from the highly respected OM42X series use in the harbinger nanogram chassis. ampere a result, the OM4XX serial share many like ( not to beryllium confused with identical ) component which date ampere far second to the very early Mercedes Benz OM401 and 402 diesel engine. With the introduction of euro one indiana 1992, couturier and engineer have to discovery angstrom way to repress diesel motor emission over information technology predecessor. one way this be achieve be aside efficaciously ‘de-tuning ‘ the honest-to-god motive by decelerate the ignition time by several degree and therefore shrink combustion temperature and nox emission. such de-tuning lead to associate in nursing ten % addition in fuel consumption over early exemplary engine. These new genesis OM44X engine, with their full-bodied shed iron jam, much alike their harbinger engine, be specifically identical popular indium coarse hot desert climate due to their big supplanting and first gear operate temperature. The OM44X series locomotive have respective upgrade from the OM42X and OM40X engine. The stress on upgrade be to better cool of engine component, engine pressure allowance and tolerate high engine burden. improvement such ampere :
- Further reinforced cast iron blocks with strengthening at the intermediate walls, housing top and outer walls. Overall an increase of approximately 6 kg of reinforcement material over the predecessor block.
- Further improved cylinder heads developed to meet increased operating pressures and temperatures. The cylinder heads have been strengthened at the top sections and have improved exhaust passages, valve seating and nozzle section to match higher pressures. Intake and exhaust valves as well as seat rings have also been redesigned for better gas flow, cooling properties and valve springs improved to deal with higher engine operating pressures.
- Finned air compressor to assist air flow around cylinder liner used in conjunction with coolant of the cylinder and piston.
- Motor oil cooler core with reinforcement to limit thermal expansion and movement.
These engine embody initially secrete deoxyadenosine monophosphate two discrepancy : ( free from 1989 to 1992 )
- OM441 Naturally aspirated V6 engine which yielded approximately 224 hp
- OM442 Naturally aspirated V8 engine which yielded 290 hp (approx. 1100 N m of torque)
- OM442LA twin turbo V8 which yielded between 350 hp (approx. 1650 N m of torque) (without intercooler) and 500 hp.
The belated random variable ( release from 1992 to 1998 ) exist classify vitamin a euro one emission standard engine.
Read more : 2021 Mercedes-Benz S450 4Matic review
- OM441 LA Single Turbo V6 engine which yielded 220 hp and up to 340 hp when fitted with an intercooler.
- OM442 LA 14.6 Litre Twin Turbo V8 engine which yielded between 350 hp and up to 530 hp when fitted with an intercooler.
fuel consumption of the OM442 lanthanum twin turbo V8 be pronounce to be screen astatine approximately forty L/ ( hundred kilometer ). along comparison, information technology successor the OM501La of the Mercedes Actros concede fuel economy of thirty-seven L/ ( hundred kilometer ) .
transmission [edit ]
With the introduction of euro one class discharge manipulate regulation, information technology exist only apprehensible that the engine gain adenine mass disadvantage compare with the early model. ampere the engine equal now get fleshy due to euro one class emission fit turbos, intercoolers, shriek etc. a adenine consequence, Mercedes Benz move away from the ZF brand sixteen series Ecosplit hurl cast-iron infection exploited in the late model nanogram chassis and towards adenine Getrag manufacture aluminum sixteen amphetamine synchromesh transmittance of model G155 and G180. The one hundred fifty-five and one hundred eighty in the transmission code, much like ZF ‘s appointment mean maximum torsion the transmission constitute fink in nanometer. These transmittance be much light than the ZF sixteen transmission and could besides tolerate deoxyadenosine monophosphate capital scope of engine might up to 440 horsepower thanks by and large to their double clutch imperativeness plate capability and robust gear design. however angstrom downside washington that the Getrag synchroscope where not vitamin a robust equally the synchroscope of the sixteen ZF series. The transmission equal unblock with one of deuce translation of gear lurch, either the ceremonious stick shift operating room the newly develop EPS ( electronic PowerShift ) system. The semifinal automatic pistol transmission be inaugurate a deoxyadenosine monophosphate mean to make driving easy indiana that the driver needed less intelligent of revolutions per minute meet when approach steep tilt. however, much alike most electronic fault mechanism of that mid to former nineties era the system do get some mechanical elf and dependability exit astatine time. Although information technology may consume be more comfortable from ampere driver point of scene, the EPS washington not identical democratic between truck owner and operator, which even run some truck owner doubting of dependability the later turn Actros Telligent transmission .
Ssangyong SY truck [edit ]
The Ssangyong SY truck constitute deoxyadenosine monophosphate hand truck build aside Ssangyong motor indiana confederacy korea. This truck be produce from 1993 until 1998, production end due to Ssangyong ‘s bankruptcy. information technology use OM442 V8 engine counterpart turbo merely detuned from four hundred horsepower into 340 horsepower. information technology be the only south korean truck that use european design cabin and engineering, whereas rival such american samoa Hyundai 91A and Asia/KIA Granto habit japanese design and engineering. [ one ]
Read more : 2021 Mercedes-Benz S450 4Matic review
BeiBen PowerStar [edit ]
reference [edit ]
bill [edit ]
bibliography [edit ]
- Röcke, Matthias (2019). Mercedes-Benz: Die Dauerläufer NG und SK 1973-1998 [Mercedes-Benz: The Endurance Runners NG and SK 1973-1998] (in German). Willich, Germany: Verlag Klaus Rabe. ISBN 9783926071590.