Benz BZ 4S In-line Engine

White engine with six black and green cylinders held up by a black base.

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Object Details

Manufacturer

Benz

Physical Description

Type: Reciprocating, In-line, 6 cylinders, liquid cooled

Power rating: 205 kW (275 hp) at 1,500 rpm

Displacement: 18.8 L (1,149 cu in.)

Bore and Stroke: 145 mm (5.71 in.) x 190 mm (7.48 in.)

Weight: 385 kg (848 lb)

Summary

Benz & Cie of Mannheim, Germany, manufactured nearly 6,500 Benz BZ 4S engines between 1914 and 1918. The engine followed the usual German practice of having a separate water-cooled cylinder bolted to the crank case by long studs. The studs passed through the crank chamber top half and secured the crank shaft bearings between the top and bottom halves of the crank case.

The BZ 4S powered various German reconnaissance, bomber, and infantry patrol aircraft, including the Ago C.II, C.IV, and C.VII; A.E.G. J.I and J.II; Albatros J.I and C.VII; D.F.W. C.V; Halberstadt C.V; and Junkers J.I.

Credit Line

Found in collection

Date

1914

Inventory Number

A19670100000

Restrictions & Rights

Usage conditions apply

Type

PROPULSION-Reciprocating & Rotary

Dimensions

Length 149.9 cm (59.0 in.), Width 53.1 cm (20.9 in.), Height 131.3 cm (51.7 in.)

Country of Origin

Germany

See more items in

National Air and Space Museum Collection

Location

Steven F. Udvar-Hazy Center in Chantilly, VA

Hangar

Boeing Aviation Hangar

Data Source

National Air and Space Museum

Metadata Usage

Not determined

Link to Original Record

http://n2t.net/ark:/65665/nv950786ee9-19d9-4412-8ad3-312d0177c731

Record ID

nasm_A19670100000