Hispano-Suiza 12X

This article is about an aircraft engine, for the prototype electric locomotive see AEG 12X

12X
Type	Vee piston engine
National origin	France
Manufacturer	Hispano-Suiza

The Hispano-Suiza 12X was an aircraft piston engine designed in France by Hispano-Suiza during the early 1930s. A 12-cylinder Vee, liquid-cooled design, the 12X was used on several aircraft types, some of them being used in limited numbers during World War II. Due to the 12X's limited power output, its derivative the more powerful Hispano-Suiza 12Y had a longer career.

Contents 1 Variants 2 Applications 3 Specifications (12Xcrs) 4 References

Variants

Hispano-Suiza 12Xbrs

Hispano-Suiza 12Xcrs

Hispano-Suiza 12Xgrs

Hispano-Suiza 12Xhrs

Hispano-Suiza 12Xirs

Hispano-Suiza 12Xrs

Applications

• Dewoitine D.500
• Bernard 260
• Blériot-SPAD S.510
• Loire 130
• Loire-Nieuport LN.40
• Lioré et Olivier H-246
• Morane-Saulnier M.S. 227
• Potez 540
• Potez 650

Specifications (12Xcrs)

Data from ^[1]

General characteristics

• Type: Twelve-cylinder supercharged liquid-cooled 60° Vee piston engine
• Bore: 130 mm (5.12 in)
• Stroke: 170 mm (6.69 in)
• Displacement: 27 L (1,648 in³)
• Length: 1,577 mm (62.09 in)
• Width: 726 mm (28.58 in)
• Height: 904 mm (35.59 in)
• Dry weight: 380 kg (838 lb)

Components

• Valvetrain: Overhead camshaft with two valves per cylinder
• Supercharger: Single-speed centrifugal type supercharger, 10:1 reduction
• Fuel system: Six Solex carburetors
• Fuel type: 85 octane rating gasoline
• Cooling system: Liquid-cooled
• Reduction gear: Spur, 2:3

Performance

• Power output:
  
  • 486 kW (651 hp) at 2,600 rpm for takeoff
  • 508 kW (681 hp) at 2,600 rpm at 4,500 m (14,765 ft)
• Specific power: 18.81 kW/l (0.41 hp/in³)
• Compression ratio: 5.8:1
• Specific fuel consumption: 328 g/(kW•h) (0.54 lb/(hp•h))
• Oil consumption: 11 g/(kW•h) (0.28 oz/(hp•h))
• Power-to-weight ratio: 1.34 kW/kg (0.81 hp/lb)

References

Hispano-Suiza aircraft engines Piston engines 8 · 12X · 12Y · 12Z · 14AA · 14AB Turbojets Verdon

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