The Daimler-Mercedes M9456 engine is a supercharged and naturally-aspirated, 6.2-liter to 6.4-liter, straight-6,

internal combustion An internal combustion engine (ICE or IC engine) is a heat engine in which the combustion of a fuel occurs with an oxidizer (usually air) in a combustion chamber that is an integral part of the working fluid flow circuit. In an internal combust ...

piston engine, designed, developed and produced by

Mercedes-Benz Mercedes-Benz (), commonly referred to as Mercedes and sometimes as Benz, is a German luxury and commercial vehicle automotive brand established in 1926. Mercedes-Benz AG (a Mercedes-Benz Group subsidiary established in 2019) is headquartere ...

, in partnership with Daimler; between 1924 and 1929.

M9456 engine

The six-cylinder in-line 6240 cc engine featured an

overhead camshaft An overhead camshaft (OHC) engine is a piston engine where the camshaft is located in the cylinder head above the combustion chamber. This contrasts with earlier overhead valve engines (OHV), where the camshaft is located below the combustion cha ...

which at the time was an unusual feature, with “ bevel linkage”. However, it was the switchable supercharger (”Kompressor”), adopted from the company's racing cars, that attracted most of the attention. With the device switched off maximum claimed output was of at 3,100 rpm: with the supercharger operating, maximum output rose to . The top speed listed was 115 km/h (71 mph) or 120 km/h (75 mph) depending on which of the two offered final drive ratios was fitted. From 1928 the Modell K received a still more powerful "Kompressor engine", although there was no change to the overall engine size. Stated power now increased to or, with the compressor switched on, . The official performance figures were unchanged.

Applications

Mercedes 24/100/140 PS The Mercedes 24/100/140 PS was a large luxury car introduced by Daimler of Untertürkheim in 1924. Production continued until 1929 by which time Daimler had merged with Benz & Cie (effective 1926) and the car's name changed to Mercedes-Benz ...

References

{{reflist Mercedes-Benz engines Straight-six engines Engines by model Gasoline engines by model