| Mercedes-Benz M176/M177/M178 | |
|---|---|
 | |
| Overview | |
| Manufacturer | Mercedes-AMG |
| Production | 2014–present |
| Layout | |
| Configuration | 90° V8 |
| Displacement | 4.0 L; 243.0 cu in (3,982 cc) |
| Cylinder bore | 83 mm (3.27 in) |
| Piston stroke | 92 mm (3.62 in) |
| Cylinder block material | Cast-aluminium, closed deck |
| Valvetrain | DOHC 4 valves x cyl. |
| Compression ratio | 10.5:1 |
| RPM range | |
| Max. engine speed | 7,000 rpm |
| Combustion | |
| Supercharger | BorgWarner e-Booster (EQ Boost; 2019—present) |
| Turbocharger | BorgWarner twin-turbos |
| Fuel system | Direct injection |
| Fuel type | Gasoline |
| Oil system | |
| Cooling system | Water-cooled |
| Output | |
| Power output | 340–551.5 kW (462–750 PS; 456–740 hp) |
| Torque output | 600–900 N⋅m (443–664 lb⋅ft) |
| Dimensions | |
| Dry weight | 209 kg (461 lb) |
| Chronology | |
| Predecessor | Mercedes-Benz M278 / M157 engine (4.7 L & 5.5 L) Mercedes-Benz M152 engine Mercedes-Benz M156 engine |
The M176/M177/M178 is a petrol V8 engine range designed by Mercedes-AMG, replacing the M278 and M157 engines, and is based on the M133 engine.[1]
The engine has two BorgWarner turbochargers positioned between the two cylinder heads in a "hot-V" configuration. The fuel injection system uses Bosch's new piezo-electric direct fuel injectors that deliver five squirts of fuel per combustion cycle.[2]
The M176 engines are mostly assembled by machine with some components assembled by technicians at Untertürkheim manufacturing centre outside Stuttgart. The M177 and M178 are individually assembled by the technicians in "one man, one engine" principle at the AMG manufacturing centre in Affalterbach.[3]
- ^ Oagana, Alex (13 June 2014). "Mercedes-AMG GT M178 Engine Specs Unveiled". Auto Evolution.
- ^ Sherman, Don (2 July 2014). "In-Depth With the 2016 Mercedes-AMG GT's New V-8: So Long, Natural Aspiration—Hello, Twin Turbos!". Car and Driver.
- ^ Deppe, Philipp. "Ab 2017 neue Generation von 4- und 6-Zylinder Reihenmotoren bei Benzin und Diesel". mbPassion. Retrieved 18 May 2021.