Benz Bz.IIIb

From Wikipedia, the free encyclopedia
Jump to: navigation, search
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[edit]

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]


Specifications (Benz Bz.IIIb)[edit]

General characteristics

  • Type: 8-cylinder liquid-cooled 60° V engine[2]
  • Bore: 135 mm (5.31 in)[2]
  • Stroke: 135 mm (5.31 in)[2]
  • Displacement: 15.5 L (943 cu in)
  • Length: 1,300 mm (51 in)[3]
  • Width: 860 mm (34 in)[3]
  • Height: 850 mm (33 in)[3]
  • Dry weight: 257 kg (568lb)[3]


  • Fuel system: Carburetor
  • Cooling system: Liquid-cooled


  • Power output: maximum 200 hp at 1,750 rpm[2]

See also[edit]

Comparable engines
Related lists


  1. ^ Green & Swanborough (1994) p.339
  2. ^ a b c d Gunston (1989) p.23
  3. ^ a b c d Century of flight


  • Gunston, Bill (1986). World Encyclopedia of Aero Engines. Wellingborough: Patrick Stephens. p. 25. 
  • Green, William; Swanborough, Gordon (1994). The Complete Book of Fighters. Godalming, UK: Salamander Books. p. 339. ISBN 1-85833-777-1. 
  • "Century of Flight". Retrieved 30 June 2013.