Alfa Romeo 110

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

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).

Variants

Alfa 110-1: (110-1): 96.94 kW (130 hp) at 2,350 rpm
Alfa 110ter: 108.13 kW (145 hp) at 2,350 rpm
Alfa 111: 115.58 kW (155 hp)^[1]

Applications

Specifications (110-1)

Data from Jane's All The World's Aircraft 1938^[2] Italian Civil and Military aircraft 1930–1945^[1] 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 (373.77 cu in)
Length: 1,642 mm (64.65 in)
Width: 498 mm (19.61 in)
Height: 825 mm (32.48 in)
Dry weight: 136 kg (299.83 lb)
Frontal Area: 6.1 sq ft (0.6 m²)

Components

Valvetrain: Two valves per cylinder, operated by push-rods and rocker arms
Turbocharger: 275.8–310.3 kPa (40–45 psi), dry sump with one pressure and three scavenge pumps
Oil grade (viscosity): 20.5 cSt (100 S.U. secs)

Oil consumption: 0.01095 kg/(kW h) (0.018 lb/(hp h))

Cooling system: Air-cooled
Starter: Eclipse inertia starter
Ignition: 2x Marelli SA-4 magnetoes,2x 14 mm (0.55 in) short reach spark plugs per cylinder.

Performance

Power output:
Maximum power (110-1): 96.94 kW (130 hp) at 2,350 rpm

Maximum power (110ter): 108.13 kW (145 hp) at 2,350 rpm

Maximum power (111): 115.58 kW (155 hp) at 2,100 rpm

Normal (110-1): 89.48 kW (120 hp) at 2,100 rpm

Normal (110ter): 96.94 kW (130 hp) at 2,100 rpm

Cruising (110-1): 67.11 kW (90 hp) at 1,500 rpm

Compression ratio: 5.5:1
Specific fuel consumption: 0.318 kg/(kW h) (0.523 lb/(hp h)) (take-off)
Power-to-weight ratio: 0.712 kW/kg (0.433 hp/lb)

Notes

^ ^a ^b ^c Thompson, Jonathan W. (1963). Italian Civil and Military aircraft 1930–1945. USA: Aero Publishers Inc. p. 295. ISBN 0-8168-6500-0. LCCN 63-17621.
^ Bridgman, Leonard (ed.) (1938). Jane's All The World's Aircraft 1938. London: Sampson Low and Marston Co. Ltd. pp. 67d–68d. {{cite book}}: |first= has generic name (help)
^ Wilkinson, Paul H. (1945). Aircraft engines of the World 1945 (2nd ed.). New York: Paul H. Wilkinson. pp. 282–283.

References

Bridgman, Leonard (ed.) (1938). Jane's All The World's Aircraft 1938. London: Sampson Low and Marston Co. Ltd. pp. 67d–68d. {{cite book}}: |first= has generic name (help)
Gunston, Bill (1986). World Encyclopedia of Aero Engines. Wellingborough: Patrick Stephens. p. 9.

[Thompson-1] Thompson, Jonathan W. (1963). Italian Civil and Military aircraft 1930–1945. USA: Aero Publishers Inc. p. 295. ISBN 0-8168-6500-0. LCCN 63-17621.

[JAWA38-2] Bridgman, Leonard (ed.) (1938). Jane's All The World's Aircraft 1938. London: Sampson Low and Marston Co. Ltd. pp. 67d–68d. {{cite book}}: |first= has generic name (help)

[Wilkinson1946-3] Wilkinson, Paul H. (1945). Aircraft engines of the World 1945 (2nd ed.). New York: Paul H. Wilkinson. pp. 282–283.

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