The Alfa Romeo 110 was an Italian four cylinder air-cooled inverted inline engine for aircraft use, mainly for trainers and light aircraft. The Alfa Romeo 110 was based on the de Havilland Gipsy Major, with approximately 500 units produced. Derivatives of the 110 include the -1, ter and Alfa Romeo 111[1] (possibly a mis identification of the 110-1).

Alfa Romeo 110
Type	Piston aircraft engine
Manufacturer	Alfa Romeo
First run	1930s
Number built	~500

Variants

Alfa 110-1

97 kW (130 hp) at 2,350 rpm

Alfa 110ter

108 kW (145 hp) at 2,350 rpm

Alfa 111

116 kW (155 hp)[1]

Applications

• Ambrosini SAI.10
• Fiat G.2/2
• CANSA C.5B/1
• CANT Z.1010 Balilla
• CANT Z.1012
• Saiman 202
• Ambrosini S.1001 (110ter)
• Agusta CP-110 (110ter)

Specifications (110-1)

Data from Jane's All The World's Aircraft 1938,[2] Italian Civil and Military aircraft 1930–1945,[1] and Aircraft Engines of the World 1945 [3]

General characteristics

• Type: Four-cylinder inverted air-cooled inline engine
• Bore: 118 mm (4.65 in)
• Stroke: 140 mm (5.51 in)
• Displacement: 6.125 L (373.8 cu in)
• Length: 1,642 mm (64.6 in)
• Width: 498 mm (19.6 in)
• Height: 825 mm (32.5 in)
• Dry weight: 136 kg (300 lb)
• Frontal Area: 6.1 sq ft (0.6 m²)

Components

• Valvetrain: Two valves per cylinder, operated by pushrods and rocker arms
• Oil system: Dry sump with one pressure and three scavenge pumps, 276–310 kPa (40–45 psi)
  • Oil consumption: 0.01095 kg/(kW h) (0.018 lb/(hp h))
• Cooling system: Air-cooled
• Starter: Eclipse inertia starter
• Ignition: 2 x Marelli SA-4 magnetos

Performance

• Power output:
  
  • Maximum power: 97 kW (130 hp) at 2,350 rpm
  • Normal: 89 kW (120 hp) at 2,100 rpm
  • Cruising: 67 kW (90 hp) at 1,500 rpm
• Compression ratio: 5.5:1
• Specific fuel consumption: 0.32 kg/(kW h) (0.52 lb/(hp h)) (take-off)
• Power-to-weight ratio: 0.71 kW/kg (0.43 hp/lb)

See also

Comparable engines

• Cirrus Minor
• Cirrus Major
• de Havilland Gipsy
• de Havilland Gipsy Major
• Elizalde Tigre IV
• Hirth HM 504
• Menasco C4

Related lists

• List of aircraft engines

Notes

References

Wikimedia Commons has media related to Alfa Romeo 110.

• Bridgman, Leonard, ed. (1938). Jane's All The World's Aircraft 1938. London: Sampson Low and Marston Co. Ltd. pp. 67d–68d.
• Gunston, Bill (1986). World Encyclopedia of Aero Engines. Wellingborough: Patrick Stephens. p. 9.

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