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26-488: The M278 is derived from the company's previous M273 V8 engine, sharing its bore pitch , aluminium engine block , and Silitec aluminium/silicon low-friction cylinder liners . In contrast to the port-injected M273, the M278 features gasoline direct injection , with piezo-electrically actuated fuel injectors for more precise fuel delivery, and multi-spark ignition, which enables the spark plugs to be fired multiple times over

52-480: A bore and stroke of 92.9 mm × 86 mm (3.66 in × 3.39 in). Output is 320 kW (429 bhp; 435 PS) at 5,250 rpm with 700 N⋅m (516 lb⋅ft) of torque at 1,800-3,500 rpm for S-Class, CL-Class, SL-Class, and GL-Class models. CLS-Class, E-Class, and M-Class models are detuned to 300 kW (402 bhp; 408 PS) with 600 N⋅m (443 lb⋅ft) of torque at 1,600 rpm. Although it no longer corresponds with

78-400: A planetary (automatic) transmission's multiple clutches and bands for each gear. The MCT is fitted with 4 drive modes: "C" (Comfort), "S" (Sport), "S+" (Sport plus) and "M" (Manual) and boasts 100 millisecond shifts in "M" and "S+" modes. MCT-equipped cars are also fitted with the new AMG DRIVE UNIT with an innovative Race Start function. The AMG DRIVE UNIT is the central control unit for

104-629: A production passenger vehicle. In all applications this transmission is identified as the New Automatic Gearbox Generation Two, or NAG2 . It initially debuted in Autumn 2003 on 5 different V8-cylinder models: the E500 , S 430 , S 500 , CL 500 , and SL 500 . It also soon became available on many 6-cylinder models. Turbocharged V12 engines, 4-cylinder applications and commercial vehicles continued to use

130-472: Is Mercedes-Benz 's trademark name for its 7-speed automatic transmission , starting off with the W7A ;700 and W7A 400 ( W andler- 7 -Gang- A utomatik bis 700 oder 400  Nm Eingangsdrehmoment; converter-7-gear-automatic with 516 or 295 ft·lb maximum input torque; type 722.9 ) as core models. This fifth-generation transmission was the first 7-speed automatic transmission ever used on

156-411: Is a 5.5 L (5,461 cc) version. Bore and stroke increased to 98 mm × 90.5 mm (3.86 in × 3.56 in). Output is 285 kW (387 PS; 382 hp) at 6000 rpm with 530 N⋅m (391 lb⋅ft) of torque at 2800–4800 rpm. Applications: *Note: 500 or 550 model naming varies depending on geographical market. 7G-Tronic#AMG SpeedShift MCT 7G-Tronic

182-719: Is made of magnesium alloy , a first for the industry, to save weight. The 7G-Tronic transmission is built at the Mercedes-Benz Stuttgart - Untertuerkheim plant in Germany, the site of Daimler-Benz 's original production facility. In July 2009, Mercedes-Benz announced they are working on a new nine-speed automatic. In normal condition it sequentially shift gears, but if required it can skip some gears, that are: 7 to 5, 6 to 2, 5 to 3 and 3 to 1. On vehicles with 6 or 8 cylinder engines with comfort mode engaged, as well as on off-road vehicles with low range selected,

208-420: The 7G-Tronic 7-speed automatic transmission , and the new 9G-Tronic 9-speed automatic transmission. Applications: The second variant, designated M157 , is tuned by Mercedes-AMG for use in higher-performance models. This version has a displacement of 5,461 cc (5.5 L) with a bore and stroke of 98 mm × 90.5 mm (3.86 in × 3.56 in). Increased power and torque comes from

234-588: The AMG Speedshift MCT 7-speed semi-automatic transmission , which replaces the 7G-Tronic's torque converter with a wet clutch pack. Note that this MCT 7-speed can handle considerably more torque and is not the same unit as the dual-clutch transmission found on the Mercedes-Benz SLS AMG . Applications: The M157 engine will replace the previous M156 in most of the AMG lineup. Despite

260-605: The M113 V8, all M273s have aluminium engine blocks, sequential port fuel injection , fracture-split forged steel connecting rods , a one-piece cast crankshaft , and a magnesium intake manifold . The cylinders are lined with silicon/aluminium, and a dual-length variable-length intake manifold is fitted. In addition to this, new features shared with the M272 include DOHC aluminium cylinder heads, 4 valves per cylinder and independent continuously variable valve timing on both

286-436: The 2011 S 63 AMG and CL 63 AMG, and the 2012 CLS 63 AMG and C 63 AMG. Compulsory on the 2014 AMG CLS 63 and E 63 models, as well as their "S--Model" variants. Improved with the release of the 2015 model year, by decreasing the lag time between shifts. Progress is reflected in 7 forward gears using 11 main components, compared to 5 forward gears with 9 main components in the previous 5G-Tronic transmission. This turns out

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312-518: The 5.5–litre M273 while producing more power 320 kW (435 PS; 429 bhp) versus 285 kW (387 PS; 382 bhp) and torque 700 N⋅m (516 lb⋅ft) versus 530 N⋅m (391 lb⋅ft). The entire M278 lineup avoids the United States Gas Guzzler Tax , a first for V8 production engines from Mercedes-Benz. The basic M278 has a displacement of 4,663 cc (4.7 L; 284.6 cu in) with

338-534: The 5.5–litre displacement, all models are designated "63" for marketing purposes. The third variant, designated M152 , is a naturally aspirated derivative of the M157 engine, sharing the same displacement, direct injection, and many other features. The M152 engine includes a cylinder deactivation variable displacement system for improved fuel economy (up to 30 percent better than the M113 E55 engine used in

364-535: The AMG Performance Package. Beginning with the 2014 E-Class and CLS-Class, power increases to 410 kW (557 PS; 550 bhp) 720 N⋅m (531 lb⋅ft) of torque for standard tune, or 430 kW (585 PS; 577 bhp) with 800 N⋅m (590 lb⋅ft) of torque for "S-Model" variants. At the same time for SL-Class, power increases to 430 kW (585 PS; 577 bhp) and 900 N⋅m (664 lb⋅ft). These engines are mated to

390-507: The AMG SPEEDSHIFT MCT 7-speed sports transmission and all driving dynamics functions. The driver can change gears either using the selector lever or by nudging the steering-wheel shift paddles. The new Race start Function is a launch control system that enables the driver to call on maximum acceleration while ensuring optimum traction of the driven wheels. It is available on the 2009 SL 63 AMG and E 63 AMG , and will be used for

416-507: The affected gear(s). Upon electrical failure, the transmission shifts to 6th gear. If the critical fault persists after the vehicle is stopped and the engine restarted, only 2nd gear and reverse gear #2 are available. The TCT transmission is essentially the 7G-Tronic automatic transmission including " T orque C onverter T echnology". Sporty, performance-oriented version with the same gear ratios. First used in 2005 Mercedes-Benz SLK 55 AMG. In 2007, 7G-Tronic transmission with AMG SPEEDSHIFT

442-520: The combustion sequence for more efficient combustion. Other changes relative to the M273 include an increased adjustment range for the variable valve timing system, a new timing chain arrangement, and new engine accessories (such as the oil pump, water pump, fuel pump, and alternator) which reduce parasitic loads . Many of these new features are shared with the M276 V6 engine family , which was announced at

468-637: The engine displacement, all of the above models are still badged as "550". The GL-Class, besides the GL550 above, also features the GL450 trim that carries a detuned version of the 4.7 L engine making 270 kW (362 bhp; 367 PS) and 550 N⋅m (406 lb⋅ft) For 2014 S-Class models (chassis code W222), power is increased to 335 kW (449 bhp; 455 PS) at 5,250 rpm, while torque remains at 700 N⋅m (516 lb⋅ft) between 1,800-3,500 rpm. . These engines are mated to

494-513: The increased displacement as well as higher boost pressure of 1 bar (15 psi). There are six states of output with the M157. For the S-Class and CL-Class, power is 400 kW (544 PS; 536 bhp) at 5,500 rpm with 800 N⋅m (590 lb⋅ft) of torque at 2,000-4,500 rpm, or 420 kW (571 PS; 563 bhp) at 5,500 rpm with 900 N⋅m (664 lb⋅ft) of torque at 2,500-3,750 rpm with

520-499: The intake and exhaust sides. A new electronically controlled cooling system has eliminated the need for a mechanical thermostat for improved engine warm-up and optimum control of engine temperature. The E47 is a 4.7 L (4,663 cc) version. Bore and stroke is 92.9 mm × 86 mm (3.66 in × 3.39 in). Output is 250 kW (340 PS; 335 hp) at 6000 rpm with 460 N⋅m (339 lb⋅ft) of torque at 2700–5000 rpm. Applications: The E55

546-474: The older Mercedes-Benz 5G-Tronic transmission for many years. The company claims that the 7G-Tronic is more fuel efficient and has shorter acceleration times and quicker intermediate sprints than the outgoing 5-speed automatic transmission. It has 2 reverse gears. The transmission can skip gears when downshifting. It also has a torque converter lock-up on all 7 gears, allowing better transmission of torque for improved acceleration. The transmission's casing

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572-444: The optional AMG Performance Package. For the 2013-15 SL-Class, power is 395 kW (537 PS; 530 bhp) or 415 kW (564 PS; 557 bhp) with the optional AMG Performance Package. For the 2012-2013 E-Class and CLS-Class, power is 386 kW (525 PS; 518 bhp) with 700 N⋅m (516 lb⋅ft) of torque in standard tune, or 410 kW (557 PS; 550 bhp) with 800 N⋅m (590 lb⋅ft) of torque with

598-402: The previous model). Output is 310 kW (421 PS; 416 bhp) at 6,800 rpm, with 540 N⋅m (398 lb⋅ft) of torque at 4,500 rpm. Applications Mercedes-Benz M273 engine The Mercedes-Benz M273 engine is a V8 automobile piston engine family used in the 2000s (decade). It was based on the similar M272 V6 introduced in 2004. An evolution of

624-404: The same time. While the M273 was naturally aspirated , the M278 features twin turbochargers from Honeywell , one per cylinder bank, producing 0.9 bar (13 psi) boost pressure in most configurations. Mercedes-Benz estimated that these changes, with vehicle modifications such as a stop-start system , give the 4.7–litre M278 22% lower fuel consumption and CO 2 emissions than

650-422: The transmission will always use 2nd gear as initial gear. If the transmission control unit senses a critical fault during driving, it will activate an emergency operating mode: Upon hydraulic failures, it will stop shifting gears and permanently retain the currently selected gear; if the failure can be pinpointed to one of the internal hydraulic control valves, the transmission will continue shifting but stop using

676-455: Was also called '7G-Tronic Sport'. Mercedes-AMG developed the 7-speed MCT " M ulti C lutch T echnology" planetary automatic transmission . The MCT transmission is essentially the 7G-Tronic automatic transmission without a torque converter. Instead of a torque converter, it uses a compact wet startup clutch to launch the car from a stop and also supports computer-controlled double-clutching. The MCT (Multi-Clutch Technology) acronym refers to

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