Mercedes-Benz M176, M177 and M178 - a series of gasoline eight-cylinder turbocharged internal combustion engines in a V-shaped configuration from the division of Mercedes-AMG , presented in 2014. The debut took place on the car Mercedes-AMG GT at the Paris Motor Show. The working volume of all modifications is 4 liters (3996 cm 3 ).
From the end of winter - the beginning of spring 2015, engines were serially installed on Mercedes-AMG GT and Mercedes-AMG C63 S cars , and from June of that year on the Mercedes-Benz G500.
Content
History
The Mercedes-Benz M178 engine was specifically designed to replace the naturally aspirated V8 6.2-liter M159 powertrain. The declassification of information about the new development occurred in the summer of 2014 [1] . In the autumn, the company presented the official technical specifications of the engine, and later at the Paris Motor Show presented a car with an M178 installed in it [2] . Since February 2015, a modification called M177 is installed on the Mercedes-AMG C63 AMG [3] .
Since June 2015, the M176 engine (modification M178) has been installed on G-class cars (G500) [4] .
In the winter of 2016, it became known that the new E-class model ( W213 ) in the modification from the Mercedes-AMG division will also be equipped with the M178 engine [5] .
Description
The Mercedes-Benz M178 engine is a petrol V8 piston internal combustion engine with two turbochargers [1] [6] . The camber angle of the cylinders is 90 ° [1] . The cylinder diameter is 83 mm, the piston stroke is 92 mm [1] [7] . Compression is 10.5 kgf / cm 2 [7] . Two parallel Borg Warner turbochargers [8] are located in the center of the engine, between the cylinders (the layout is called “ hot inside V ” [1] [7] [9] , in the Russian-language media it is called “hot V-shaped collapse” [10] ) . In this form, the power unit occupies a smaller volume (88 mm shorter than the M159), reacts faster to gas and has less harmful emissions. The boost pressure reaches 1.2 bar [1] [6] . The air directed into the cylinders is cooled by a water intercooler [8] . The electronically controlled direct injection system is equipped with Bosch 3rd generation piezo nozzles [7] , capable of supplying fuel up to seven times per cycle (pressure ranges from 100 to 200 bar [1] ).
The new M178 shares some technological features with the turbocharged V6 power unit used by Mercedes-AMG on Formula 1 models [6] [7] . The engine block is cast from lightweight aluminum alloy; aluminum with a small amount of zirconium is also mainly involved in the block head [8] . The fuel mixture supply system implies the presence of 32 valves [1] [8] , four camshafts, direct fuel injection with a maximum pressure of 200 bar [8] . In addition, the engine is equipped with forged pistons, a special coating of NANOSLIDE cylinders [1] , which reduces friction loads [7] [11] , as well as a system with dry [6] aluminum crankcase (sand cast), the installation of which solved two problems: got rid of oil starvation under any loads and in any turns of the race track, and also lowered the unit by 55 mm [8] . Due to the use of “winged” materials, the engine weighs 209 kilograms of dry weight [6] [7] [8] . Optimized valve springs and a low coefficient of friction of the valve mechanism provide additional fuel savings [1] .
The Mercedes-Benz M178 received active supports designed to improve lateral acceleration characteristics, as well as a two-mass flywheel, with which German engineers managed to minimize angular vibration. The dry sump engine oil system includes an injection pump and a pump out pump, as well as a separate oil tank with a capacity of 12 liters [1] . The total oil volume in the system is 9 liters. The M178 is also equipped with a special exhaust system with adjustable valves that allow the driver to select the desired exhaust sound.
Engine capacity is 3982 cubic meters. centimeters [1] . There are two modifications of the power unit version DE40 AL : generating 340 kW (462 hp, 600 N · m) and 375 kW (510 hp, 650 N · m) [1] [8] . In the top version, the power per engine mass is about 0.41 kg / hp, the torque per liter of volume is 163.2 N · m / l [1] . All 100% of thrust is available from 1750 to 4750 rpm [6] [7] . The red line of revolutions is 7200 [1] [7] . The acceleration speed of a Mercedes-AMG GT with an M178 engine from 0 to 100 km / h is 3.8 seconds. According to the manufacturer [6] , the combined fuel consumption is 9.3–9.6 liters per 100 km. Recommended raw materials are A-98 gasoline. For all power indicators, the M178 complies with the Euro-6 environmental standard [1] . The CO 2 emissions are 216-224 g / km.
The engine is aggregated with a seven-speed robotic / automatic gearbox.
Specifications
M176 DE40 AL *
| Model | Car | Years of release |
|---|---|---|
| Displacement: 3982 cm 3 , power: 310 kW (422 hp) at 5250–5500 rpm, torque: 610 Nm at 2250–4750 rpm [12] | ||
| Mercedes-Benz G 500 | W463 | since 2015 |
M177 DE40 AL *
| Model | Car | Years of release |
|---|---|---|
| Displacement: 3982 cm 3 , power: 350 kW (476 hp) at 5500–6250 rpm, torque: 650 Nm at 1750–4500 rpm | ||
| Mercedes-AMG C 63 | W / S / C / A 205 | since 2015 |
| Displacement: 3982 cm 3 , power: 375 kW (510 hp) at 5500–6250 rpm, torque: 700 Nm at 1750–4500 rpm | ||
| Mercedes-AMG C 63 S [13] | W / S / C / A 205 | since 2015 |
| Displacement: 3982 cm 3 , power: 420 kW (571 hp) at 5750–6500 rpm, torque: 750 Nm at 2250–5000 rpm | ||
| Mercedes-AMG E 63 4MATIC + | W213 | since 2017 |
| Displacement: 3982 cm 3 , power: 450 kW (612 hp) at 5750–6500 rpm, torque: 850 Nm at 2500–4500 rpm | ||
| Mercedes-AMG E 63 S 4MATIC + | W213 | since 2017 |
M178 DE40 AL *
| Model | Car | Years of release |
|---|---|---|
| Displacement: 3982 cm 3 , power: 340 kW (462 hp) at 6000 rpm, torque: 600 Nm at 1600-5000 rpm | ||
| Mercedes-AMG GT | C190 | since 2015 |
| Displacement: 3982 cm 3 , power: 375 kW (510 hp) at 6250 rpm, torque: 650 Nm at 1750–4750 rpm | ||
| Mercedes-AMG GT S | C190 | since 2015 |
| Displacement: 3982 cm 3 , power: 410 kW (557 hp) at 5750–6750 rpm, torque: 680 Nm at 1900–5750 rpm | ||
| Mercedes-AMG GT C | C190 | since 2017 |
| Displacement: 3982 cm 3 , power: 430 kW (585 hp) at 6250 rpm, torque: 700 Nm at 1900–5500 rpm | ||
| Mercedes-AMG GT R | C190 | since 2017 |
* Decoding of engine designations: M = gasoline engine; OM = diesel engine; E = injection into the intake manifold; KE = injection into the intake manifold, compressor boost; DE = direct injection; ML = compressor; L = charge air cooling; A = turbocharger; red. = reduced characteristics (power, working volume); LS = increased productivity.
Notes
- ↑ 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 The new AMG 4.0-liter V8 biturbo engine: Powerful, innovative and efficient . Affalterbach , Germany : Daimler AG (July 25, 2014). Date of treatment January 22, 2016. Archived January 22, 2016.
- ↑ Andreas Haupt. Mercedes C63 AMG auf dem Autosalon in Paris 2014 Die Power-Versionen der neuen C-Klasse (German) . Auto Botor und Sport (October 1, 2014). Date of treatment January 22, 2016. Archived February 1, 2015.
- ↑ Markus Jordan. Der Mercedes-AMG GT startet bei 115.430 €, S-Modell ab 134.351 € - Bestellfreigabe am 10/06/2014 (German) . Mercedes-Benz Passion (October 6, 2014). Date of treatment January 22, 2016. Archived February 1, 2015.
- ↑ G 500 4x4 2. Das neue Sondermodell (German) . Mercedes-Benz (September 1, 2015). Date of treatment January 22, 2016. Archived January 22, 2016.
- ↑ Conner Golden. Report: Next-Gen Mercedes-AMG E63 to Boast 600 HP // Automobile. - 2015. - August 10. Archived January 22, 2016.
- ↑ 1 2 3 4 5 6 7 The new AMG 4.0-liter V8 biturbo engine. (eng.) . Mercedes-Benz Date of treatment January 22, 2016. Archived January 22, 2016.
- ↑ 1 2 3 4 5 6 7 8 9 Nelson Ireson. Mercedes-AMG GT's New Twin-Turbo V-8 M178 Engine: Gallery . Motor Authority (July 25, 2015). Date of treatment January 22, 2016. Archived January 22, 2016.
- ↑ 1 2 3 4 5 6 7 8 Anton Zheludov. Mercedes-AMG introduced the new V8 engine . At the wheel (June 13, 2014). Date of treatment January 22, 2016. Archived January 22, 2016.
- ↑ Brandon Turkus. Mercedes details 4.0L twin-turbo V8 for AMG GT . Auto Blog (July 25, 2014). Date of treatment January 22, 2016. Archived January 22, 2016.
- ↑ The new Mercedes supercar will cost almost 7 million rubles . Auto Vesti.ru (November 21, 2014). Date of treatment January 22, 2016. Archived January 22, 2016.
- ↑ Markus Jordan. Reibungsverlust minimiert durch NANOSLIDE Technologie - für weniger Verbrauch (German) . Mercedes-Benz Passion (September 1, 2011). Date of treatment January 22, 2016. Archived January 22, 2016.
- ↑ Mercedes-Benz G-Class: Makeover for an off-road icon . Stuttgart, Germany: Daimler AG Media (May 4, 2015). Date of treatment February 13, 2017. Archived February 13, 2017.
- ↑ Alle Details zum neuen C 63 AMG (W / S205) , abgerufen am 24. September 2014
Links
- Mercedes-AMG M178 YouTube YouTube video
Literature
- Leonid Popov. Mercedes has declassified the engine for the AMG GT // Drive.ru. - 2014 .-- June 16. Archived January 22, 2016.
- Conner Golden. Report: Next-Gen Mercedes-AMG E63 to Boast 600 HP // Automobile. - 2015. - August 10. Archived January 5, 2016.