Fiat A.20

A.20
Type	Water-cooled V12 engine
National origin	Italy
Manufacturer	FIAT
Major applications	Fiat CR.20 ; Macchi M.41

The Fiat A.20 was an Italian aero-engine of the 1920s. It was a water-cooled V12 engine that was used by early versions of the Fiat CR.20 fighter and the Macchi M.41 seaplane .

In 1923, FIAT built the A.15 , a 430 hp (320 kW) water-cooled V12 engine. While no production of the A.15 ensued, it formed the basis for the Fiat A.20 , which differed in being a Monobloc engine , and delivered a similar power despite a reduction in capacity from 20.3 to 18.7 L (1,239 to 1,141 in ³). ^[1]

Variants [ edit ]

A.20: Normal compression (5.7:1 compression) ^[2]
A.20 S.: High compression version (6:1 compression) ^[2]
A.20 AQ.: (AQ - Alta Quota - high altitude) High altitude version (8:1 compression) ^[2]

Applications [ edit ]

Specifications (A.20) [ edit ]

Data from The Fiat A.20 , ^[5]Jane's all the World's Aircraft 1928. ^[2]

General characteristics

Type: Water-cooled 60° V-12
Bore : 115 mm (4.53 in)
Stroke : 150 mm (5.91 in)
Displacement : 18.7 L (1,141 in ³) ^[6]
Length: 1,645 mm (64.76 in)
Width: 645 mm (25.39 in)
Height: 845 mm (33.27 in)
Dry weight : 340 kg (749.6 lb)

Components

Valvetrain : Overhead camshafts operating two inlet and two exhaust valves per cylinder via rockers
Fuel system: Two twin carburettors
Cooling system: water-cooled

Performance

Power output: ** A.20 460 hp (343.0 kW) at 2,300 rpm
- A.20S 510 hp (380.3 kW) at 2,400 rpm
- A.20AQ 430 hp (320.7 kW) at 2,060 rpm maximum continuous; 540 hp (402.7 kW) at 2,400 rpm maximum momentary output
Compression ratio : ** A.20 5.7:1
- A.20S 6:1
- A.20AQ 8:1
Specific fuel consumption : 0.528 lb/(hp?h) (0.321 kg/kWh)

References [ edit ]

^ Gunston, Bill (2006). World Encyclopaedia of Aero Engines (5th ed.). Stroud: Sutton Publishing. pp. 72?74. ISBN 978-0-7509-4479-3 .
^ ^a ^b ^c ^d Grey, C.G., ed. (1928). Jane's all the World's Aircraft 1928 . London: Sampson Low, Marston & company, ltd. p. 45d-46d.
^ Taylor, Michael J.H. (1981). Warplanes : of the world 1918?1939 . London: Ian Allan. p. 54. ISBN 0-7110-1078-1 .
^ Angelucci, Enzo, ed. (1981). World encyclopedia of military aircraft . London: Jane's. p. 124. ISBN 0-7106-0148-4 .
^ Flight 6 May 1926, p.275.
^ Flight 9 December 1926, p.807.

External links [ edit ]

" The Fiat A.20 ". Flight , 6 May 1926. p. 275.
" The Fiat Engines ". Flight , 9 December 1926, p. 807.

[Gunston-1] Gunston, Bill (2006). World Encyclopaedia of Aero Engines (5th ed.). Stroud: Sutton Publishing. pp. 72?74. ISBN 978-0-7509-4479-3 .

[JAWA1928-2] Grey, C.G., ed. (1928). Jane's all the World's Aircraft 1928 . London: Sampson Low, Marston & company, ltd. p. 45d-46d.

[Taylor-3] Taylor, Michael J.H. (1981). Warplanes : of the world 1918?1939 . London: Ian Allan. p. 54. ISBN 0-7110-1078-1 .

[Angel_p124-4] Angelucci, Enzo, ed. (1981). World encyclopedia of military aircraft . London: Jane's. p. 124. ISBN 0-7106-0148-4 .

[Flight_26_p275-5] Flight 6 May 1926, p.275.

[Flight_26_p807-6] Flight 9 December 1926, p.807.

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v t e Fiat aircraft engines
Piston engines	A.10 A.12 A.14 A.15 A.18 A.20 A.22 A.24 A.25 A.30 A.50 A.53 A.54 A.55 A.58 A.59 A.60 A.70 A.74 A.76 A.78 A.80 A.82 AN.1 AS.2 AS.3 AS.5 AS.6 AS.8 SA8/75 S.55
Turbine engines	4002 4004 4301 4700