Napier Culverin was a licensed built version of the Junkers Jumo 204 six-cylinder vertically opposed liquid-cooled diesel aircraft engine built by Napier & Son. The name is derived from the French word, culverin, for an early cannon or musket. First flown in 1938, the engine went into limited production, with testing carried out on a [1 ] Blackburn Iris V biplane flying-boat aircraft and Fairey IIIF biplane. [1 ]
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) [ edit ]
Data from [1 ]
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)
Piston ported Valvetrain:
Fuel system: Fuel injected
Fuel type: Diesel oil
Cooling system: Liquid cooled
Spur geared, reduction ratio 0.6935:1, right hand tractor Reduction gear:
Starting system: Compressed air starter
See also [ edit ]
Comparable engines [ edit ]
Related lists [ edit ]
References [ edit ]
^ a b c Lumsden 2003, p.170.
Bibliography [ edit ]
British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. ISBN 1-85310-294-6.
External links [ edit ]