The Mercedes-Benz M15 engine is a naturally-aspirated, 1.7-liter, straight-6, internal combustion piston engine, designed, developed and produced by Mercedes-Benz; between 1931 and 1936.[1][2][3]
| Mercedes-Benz M15 | |
|---|---|
| Overview | |
| Manufacturer | Mercedes-Benz |
| Production | 1931-1936 |
| Layout | |
| Configuration | Inline-6 |
| Displacement | 1.7 L (104 cu in) |
| Cylinder bore | 65 mm (2.6 in) |
| Piston stroke | 85 mm (3.3 in) |
| Valvetrain | 12-valve, SOHC, two-valves per cylinder |
| Compression ratio | 5.75:1 |
| Combustion | |
| Fuel system | Carburetor |
| Fuel type | Gasoline |
| Oil system | Dry sump |
| Output | |
| Power output | 32 hp (24 kW) |
| Torque output | 52.5 lb⋅ft (71 N⋅m) |
M15 Engine
editThe car was powered by a six-cylinder 1,692 cc engine:[4] maximum power was set at 23.5 kW (32 PS; 32 hp) at 3,200 rpm. The engine featured central lubrication and the water-based cooling system for the engine employed both a pump and a thermostat. Power was transmitted to the rear wheels via what was in effect a four-speed manual transmission, on which the top gear operated as a form of overdrive. Third gear used the 1:1 ratio conventionally used by a top gear, and there was a fourth gear with a ratio of 1 : 0.73. Fuel economy was quoted as 11 litres per 100 kilometres (26 mpg‑imp; 21 mpg‑US) and top speed 90 km/h (56 mph), which combined to represent a competitive level of performance in the passenger car market of that time.
Applications
editReferences
edit- ^ "Mercedes-Benz M15 Engine". Sportlichleicht.com. Retrieved 10 November 2021.
- ^ "Horsepower and Torque curve for 1931 Mercedes-Benz 170 (man. 4) offered since mid-year 1931 for Europe". Automobile-catalog.com. Retrieved 10 November 2021.
- ^ "1934 Mercedes-Benz 170 W15 Cabriolet C full range specs". Automobile-catalog.com. Retrieved 10 November 2021.
- ^ The actual cc was 1692 cc but the Steur cc (tax engine size) was 1680cc. Annual car tax in Germany was charged between 1928 and 1933 according to engine size but, presumably in order to simplify their calculations, the German Finance Office applied roundings in deriving the engine size from the cylinder dimensions with the result that tax cc differed slightly from actual cc. Modern sources sometimes confuse the two figures.Oswald, p. 532