- Hiro Type 91 (engine)
"This page is about an engine. For the Hiro Type 91 flying boat, see
Hiro H4H "The Hiro Type 91 was a 12-cylinder, water-cooled,
W engine developed for aircraft use by theImperial Japanese Navy in the mid 1930s. Power was in the 450 kW (600 hp) range. Its design was inspired by theLorraine-Dietrich 12Eb.pecifications (Type 91 500hp-1)
pistonspecs
type=12-cylinder water-cooled W-block (3 banks of 4 cylinders) aircraft piston engine
bore=135 mm
stroke=160 mm
displacement=27.5 L
length=
diameter=width=
height=
weight=
valvetrain=
supercharger=
turbocharger=
fuelsystem=
fueltype=
oilsystem=
coolingsystem=Liquid-cooled
power=
*620 PS for takeoff
*520 hp for max continuous
specpower=
compression=
fuelcon=
specfuelcon=
oilcon=
power/weight=Applications
*
Aichi E10A
*Aichi E11A
*Hiro H4H
*Kawanishi E7K
*Mitsubishi Ka-9 References
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