Benz Bz IIIb

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type =8-cylinder Vee water-cooled piston engine national origin =Germany |manufacturer =Benz & Cie

The Benz Bz.IIIb was an eight-cylinder, water-cooled, V-engine developed in Germany for use in aircraft in 1918.

Design and development

Inspired by the Hispano-Suiza 8, some of which were captured and tested, the Benz Bz.IIIb was a fairly large engine, but its performance was disappointing. Despite not being accepted for service use a number of late World War I prototype German aircraft used the Bz.IIIb, the Benz IIIbo and the geared Benz IIIbm. The latter suffered from vibration problems.[1]

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Specifications (Benz Bz.IIIb)

8-cylinder liquid-cooled 60° V engine bore=135 mm stroke=135 mm displacement=15.5 L length=1,300 mm width=860 mm height=850 mm weight=257 kg valvetrain= supercharger= turbocharger= fuelsystem=Carburetor fueltype= oilsystem= coolingsystem=Liquid-cooled power=maximum 200 hp at 1,750 rpm specpower= compression= fuelcon= specfuelcon= oilcon= power/weight=



  • World Encyclopedia of Aero Engines 1986
  • The Complete Book of Fighters 1994 isbn=1-85833-777-1
  1. Green & Swanborough (1994) p.339