Benz Bz.IIIb

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

Bz.IIIb
Type	8-cylinder Vee water-cooled piston engine
National origin	Germany
Manufacturer	Benz & Cie.

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 vibration problems.^[1]

Applications

• AEG DJ.I
• AEG PE
• Albatros D.X
• Albatros Dr.II
• Albatros W.8
• Aviatik D.III
• Aviatik D.IV
• Aviatik D.V
• LFG Roland D.VII
• LFG Roland D.VIII

Specifications (Benz Bz.IIIb)

General characteristics

• Type: 8-cylinder liquid-cooled 90° V engine^[2]
• Bore: 135 mm (5.31 in)^[2]
• Stroke: 135 mm (5.31 in)^[2]
• Displacement: 15.46 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]

Components

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

Performance

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

See also

Comparable engines

• Liberty L-8

Related lists

• List of aircraft engines