The Benz Bz.IV was a German six-cylinder, water-cooled, inline engine developed for aircraft use. Deliveries began in 1916, and some 6,400 were produced.
Design and development
The Bz.IV was a dual-camshaft design, with two intake and two exhaust valves per cylinder. The cylinders were cast iron surrounded by a sheet metal cooling jacket. The crankcase was aluminium and pistons were initially steel but later versions had aluminium pistons. A high compression version of the engine (Bz IVsü) was produced from 1917 onwards. In February 1918, pistons from a Bz.IV were the first captured aluminium pistons to be examined by the British Ministry of Munitions.
Variants
IV
(1916) Main production variant produced by Benz & Cie.
IVmarta
(1916) Licensed production of the Benz Bz.IV in Austria-Hungary by Magyar Automobil Részvény Társaság Arad (MARTA). The Marta produced version was heavier and had a lower compression ratio than the German original.
IVsü
(1917) Overcompressed version producing at altitudes above . Also known as the IVs, IVü or IVaü. The "ü" in the model description stands for überverdichtet (German: "overcompressedâÂÂ) while the "s" denotes the use of steel cylinder liners.
Applications
Specifications
See also
References
Bibliography
- Kroschel, Gunter and Helmust Stützer. (1977) Die deutschen Militarflugzeuge 1910-1918 Wilhelmshaven: Lohse-Eissing Mittler.
External links