Mercedes-Benz M180 engine
Reciprocating internal combustion engine / From Wikipedia, the free encyclopedia
The Mercedes Benz M180 Engine was a 2.2 L; 134.0 cu in (2,196 cc) single overhead camshaft inline-6 cylinder engine introduced at the Frankfurt Motor Show in April 1951 to power the company's new 220 (W187). It was the first engine with a cylinder bore greater than its stroke that Mercedes had installed in a production car, while using a reverse-flow cylinder head .
Mercedes-Benz M180 | |
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Overview | |
Manufacturer | Daimler-Benz |
Designer | Wolf-Dieter Bensinger[1] |
Production | 1951-1985 |
Layout | |
Configuration | Inline-6 |
Displacement | 2.2 L; 134.0 cu in (2,196 cc) 2.3 L; 140.8 cu in (2,307 cc) 2.5 L; 152.3 cu in (2,496 cc) 2.8 L; 169.5 cu in (2,778 cc) |
Cylinder bore | 80 mm (3.15 in) 82 mm (3.23 in) 86.5 mm (3.41 in) |
Piston stroke | 72.8 mm (2.87 in) 78.8 mm (3.10 in) |
Valvetrain | SOHC 2 valves x cyl. |
Combustion | |
Fuel system | Solex carburetor Mechanical fuel injection |
Management | Bosch D-Jetronic |
Fuel type | Gasoline |
Cooling system | Water cooled |
Output | |
Power output | 80–134 bhp (60–100 kW; 81–136 PS) |
Chronology | |
Predecessor | Mercedes-Benz M153 engine (pre-war) Mercedes-Benz M189 engine (of M130) |
Successor | Mercedes-Benz M110 engine (of M130) Mercedes-Benz M103 engine (of M123) |
It spawned four variants through 1968, the final and largest being the 2.8 L M130. It was achieved by boring out and stroking the M180's original "over-square" bore × stroke of 80 mm × 72.8 mm (3.15 in × 2.87 in) 2.2 L; 134.0 cu in (2,196 cc) to 86.5 mm × 78.8 mm (3.41 in × 3.10 in), yielding a displacement of 2.8 L; 169.5 cu in (2,778 cc).
Mercedes also unveiled at the 1951 Frankfurt Motor show a larger 3.0-litre M186 ‘big six’ inline-6 to power its new flagship 300 (W186) Adenauer four-door saloon.
While sharing many design features such as staggered valve arrangement and rockers running off a single overhead camshaft driven by a duplex cam-chain, the engines were of completely different design with little or no inter-changeability of parts.[2]