Benz Bz.III

The Benz Bz.III was a six-cylinder, water-cooled, inline engine developed in Germany for use in aircraft in 1914. Developing 112 kW (150 hp) at 1,400 rpm from 14.3 L (875 cu in),^[1] it powered many German military aircraft during World War I. It was replaced in production by the unrelated Benz Bz.IIIa.^[2][1] and eventually the V-8 Benz Bz.IIIb. The Benz Bz.III was built under licence in Sweden by AB Thulinverken, known as the Thulin E.

Bz.III
Type	6-cylinder in-line water-cooled piston engine
National origin	Germany
Manufacturer	Benz & Cie.
Developed from	Benz Bz.II
Developed into	RBVZ-6 Benz Bz.IV

Applications

• AEG C.I
• AEG C.II
• AEG C.III
• AEG C.IV
• AEG G.II
• Albatros C.I
• Albatros C.II
• Albatros C.III
• Albatros D.I
• Albatros W.3
• Albatros G.II
• Friedrichshafen FF.33
• Friedrichshafen FF.41
• Friedrichshafen G.I
• Gotha G.I
• Hansa-Brandenburg KDW
• Hansa-Brandenburg W.12
• Hansa-Brandenburg W.29
• LFG Roland D.VII
• Siemens-Schuckert R.I

Specifications

Data from ^[3]

General characteristics

• Type: Six-cylinder, inline piston engine
• Bore: 130 mm (5.118 in)
• Stroke: 180 mm (7.087 in)
• Displacement: 14.3 L (873 cu in)
• Dry weight: 270 kg (595 lb)

Components

• Valvetrain: One camshaft in the engine block, driving one inlet and one exhaust valve per cylinder via pushrods and rocker arms (overhead valve).
• Cooling system: Water-cooled

Performance

• Power output: 112 kW (150 hp) at 1,400 rpm
• Specific power: 8.4 kW/L
• Compression ratio: 4.7
• Specific fuel consumption: 310 g/kWh

See also

Related lists

• List of aircraft engines