The Hispano-Suiza 14AB was a 14 cylinder twin row air cooled radial engine. In 1929 the Hispano-Suiza company bought a license to produce the Wright Whirlwind engine. The technology from that engine was used to produce a number of different radial engines with greater displacements, power and number of cylinders. The most significant of them was 14AB. The 14AB was a very compact design with relatively good performance and some 2,500 engines were produced. The 14AB though suffered from cooling problems and many aircraft originally designed for the 14AB were instead redesigned to use the more reliable Gnome-Rhône 14M series of engines and the American Wright or Pratt & Whitney R-1535 engines.
Variants
;14AB-00:With reduction gear;14AB-02:Without reduction gear
pecifications (Hispano-Suiza 14AB-00)
pistonspecs
ref=[cite book|last=Tsygulev|title=Aviacionnye motory voennykh vozdushnykh sil inostrannykh gosudarstv ( _ru. Авиационные моторы военных воздушных сил иностранных государств)|publisher=Gosudarstvennoe voennoe izdatelstvo Narkomata Oborony Soyuza SSR|location=Moscow|year=1939|url=http://base13.glasnet.ru/text/aviamotory/t.htm] ]
type=Fourteen-cylinder two-row supercharged air-cooled radial engine
bore=135 mm (5.31 in)
stroke=130 mm (5.12 in)
displacement=26.05 l (1,590 in³)
length=1,530 mm (60.24 in)
diameter=1,010 mm (39.76 in)
width=
height=
weight=495 kg (1,091 lb)
valvetrain=Two overhead valves per cylinder
supercharger=Single-speed centrifugal type supercharger, 9.38:1 reduction
turbocharger=
fuelsystem=Carburetor
fueltype=87 octane rating gasoline
oilsystem=
coolingsystem=Air-cooled
power=
* 475 kW (637 hp) at 2,400 rpm for takeoff
* 501 kW (671 hp) at 2,400 rpm at 3,500 m (11,485 ft)
specpower=19.23 kW/l (0.42 hp/in³)
compression=
fuelcon=
specfuelcon=322 g/(kW•h) (0.53 lb/(hp•h))
oilcon=12 g/(kW•h) (0.32 oz/(hp•h))
power/weight=1.01 kW/kg (0.62 hp/lb)
reduction_gear=1.6:1
Applications
* Potez 630
* Breguet 691
References
* Gunston, Bill. (1986). "World Encyclopaedia of Aero Engines". Patrick Stephens: Wellingborough. p.90
