Alfa Romeo 121
From Wikipedia, the free encyclopedia
| 121 | |
|---|---|
 Alfa Romeo 121 RC14 | |
| Type | V8 aircraft engine |
| Manufacturer | Alfa Romeo |
| Major applications | Ambrosini S.7 |
The Alfa Romeo 121 was an eight-cylinder, air-cooled, inverted V engine for aircraft use produced in Italy. It was typically rated at 280 kW (380 hp).
- 121 R.C.14
- 121 R.C.20
- 121 R.C.22
Applications
Specifications
Data from Jane's All The World's Aircraft 1953-54,[1] Jane's all the World's Aircraft 1955-56,[2] Jane's all the World's Aircraft 1947[3]
General characteristics
- Type: V8 inverted air-cooled engine
- Bore: 120 mm (4.7 in)
- Stroke: 110 mm (4.3 in)
- Displacement: 9.9952 L (609.9 in3)
- Length: 1,780 mm (70.08 in)
- Width: 684 mm (26.9 in)
- Height: 700 mm (27.6 in)
- Dry weight: 345 kg (761 lb)
Components
- Supercharger: Centrifugal type
- Fuel system: Two horizontal carburettors, or one injection carburettor
- Fuel type: 100/130 octane gasoline
- Oil system: Pressure type.One pressure and three scavenge pumps
- Cooling system: Air cooling
- Reduction gear: Spur gear type: reduction ratio 0.621:1
Performance
- Power output: 284 kW (381 hp) at 3,000 rpm (take-off), 246 kW (330 hp) at 3,000 rpm (max continuous power)
- Compression ratio: 6.5:1
- Specific fuel consumption: 0.63 lb/(hp⋅h) (0.38 kg/kWh) (take-off power),
- Oil consumption: 2.5 kg/h (5.5 lb/h)
- Power-to-weight ratio: 0.82 kg/kW (1.35 lb/hp)
