Hispanopedia WikiThe Napier Culverin was a license-built version of the Junkers Jumo 204 six-cylinder vertically opposed liquid-cooled diesel aircraft engine built by D. Napier & Son. The name is derived from the French word, culverin, for an early cannon or musket.[1] First flown in 1938, the engine went into limited production, with testing carried out on a Blackburn Iris V biplane flying-boat aircraft and Fairey IIIF biplane.[1]
Design
The six cylinders were arranged vertically. Two crankshafts were located at the top and bottom of the engine and coupled together by gears. The inlet and exhaust ports were controlled by the pistons, as in a petrol-fuelled two-stroke engine.
Specifications (Culverin)
Data from[1]
General characteristics
- Type: 12-piston 6-cylinder vertical opposed-piston liquid-cooled diesel engine.
- Bore: 4.75 in (120.65 mm)
- Stroke: 8.25 in (209.55 mm)
- Displacement: 1,737 cu in (28.5 L)
- Dry weight: 1,785 lb (809.6 kg)
Components
- Valvetrain: Piston ported
- Fuel system: Fuel injected
- Fuel type:Diesel oil
- Cooling system: Liquid cooled
- Reduction gear: Spur geared, reduction ratio 0.6935:1, right hand tractor
- Starting system: Compressed air starter
Performance
- Power output: 821 hp at 2,050 rpm
- Power-to-weight ratio: 0.46 hp/lb
See also
Comparable engines
Related lists
References
Notes
Bibliography
- Lumsden, Alec. British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. ISBN 1-85310-294-6.
External links
- Photo of a Napier Culverin at Napierheritage.org
Categories:
- Napier aircraft engines
- Two-stroke diesel engines
- Aircraft diesel engines
- Opposed piston engines
- 1930s aircraft piston engines
- Diesel engines by model
- Six-cylinder engines
- Liquid-cooled aircraft piston engines