Benz Bz IV
| Benz & Cie. | |
|---|---|
 Benz Bz IV s |
|
| Bz IV | |
| Production period: | 1916-1918 |
| Manufacturer: | Benz & Cie. |
| Working principle: | Otto |
| Motor design: | In-line engine |
| Valve control: | OHV |
| Displacement: | 18,000 cm 3 |
| Mixture preparation: | Carburetor |
| Engine charging: | - |
| Power: | 169 kW |
| Dimensions: | 370 kg |
| Previous model: | Bz IIIa |
| Successor: | none |
The Benz Bz IV is a German aircraft engine from the former Benz & Cie. in Mannheim , which was primarily used in the military aircraft of the First World War .
development
The Bz IV in- line engine was designed by Arthur Berger in 1915 as the successor to the Bz IIIa . It differed from this in that the stroke volume was increased by 30% and the multi-valve technology with two inlet and outlet valves per cylinder (four-valve valve). In addition, two underlying ( OHV valve control ) camshafts and two carburettors were used . In February 1916 it passed the Ba- (Bauarten) examination and went into series production that same year . Up to 1918 at least 6,400 to a maximum of 7,000 pieces were produced, which were mainly built into the German C-types ( two-seater aircraft armed with machine guns, mostly reconnaissance aircraft ) and were characterized by high reliability. The world's first series-produced all-metal aircraft , the Junkers JI, was also equipped with a Bz IV.
Versions
- B IV (FK)
- Basic version from 1915 with a compression ratio of 4.8: 1, in 1916 an improved version with a compression ratio of 5.0: 1 appeared, a variant with an aluminum piston followed in 1917
- Bz IV a
- Altitude motor with a compression ratio of 5.8: 1
- Bz IV s
- Version with single cylinders made of steel
- Bz IV sü
- Standard version with a compression ratio of 5.8: 1 and steel cylinders, power 240 HP (177 kW) at 1400 rpm and 380 kg dry matter, production from the beginning of 1918
use
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- AEG C.VI
- AEG J.II
- Albatros C.VII
- Aviation C.II
- DFW CV and DFW C.VII
- Friedrichshafen FF 49
- Halberstadt C.III and CV
- Hansa-Brandenburg KDW
- Junkers JI
- LFG V 13
- LFG V 130
- Lloyd CV
- LVG CV-VIII
- Roland C.III
- Rumpler G.II and G.III
- Sablatnig NI
- Sablatnig PI
- Sablatnig P III
- Zeppelin (Staaken) R.III and R.IV
Technical specifications
| Parameter | Data (Bz IV) | Data (Bz IV a) |
|---|---|---|
| Manufacturer | Benz & Cie., Rheinische Automobil- und Motorenfabrik AG | |
| Developing country |
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|
|
| Year of development | 1916 | 1918 |
| Design | water-cooled six - cylinder four-stroke in - line engine | |
| drilling | 145 mm | |
| Hub | 190 mm | |
| Displacement | 18.8 l | |
| Compression ratio | 5.0: 1 | 5.8: 1 |
| Dry matter | 370 kg | 379 kg |
| Continuous output | 230 PS (169 kW) at 1400 rpm close to the ground | 240 PS (177 kW) at 1400 rpm up to an altitude of 1300 m |
| rated capacity | 200 hp (147 kW) at 1400 rpm | 220 hp (162 kW) at 1400 rpm |
| Fuel consumption | 228 g / PSh | 230 g / PSh |
| Lubricant consumption | 10 g / PSh | 11 g / PSh |
| Unit mass | 1.6 kg / hp (2.2 kg / kW) | |
| Displacement | 12.2 HP / l (9.0 kW / l) | |
literature
- Kyrill von Gersdorff, Kurt Grasmann: aircraft engines and jet engines . In: German aviation . tape 2 . Bernard & Graefe, Munich 1981, ISBN 3-7637-5272-2 , pp. 24 .
- Bruno Lange: Type manual of German aviation technology . In: German aviation . tape 9 . Bernard & Graefe, Koblenz 1986, ISBN 3-7637-5284-6 , pp. 285 .
Web links
Individual evidence
- ↑ Kyrill von Gersdorff, Kurt Grasmann: Aero engines and jet engines . In: German aviation . Bernard & Graefe, Munich 1981, ISBN 3-7637-5272-2 , pp. 28 .
- ^ Günter Kroschel, Helmut Stützer: The German military aircraft 1910–1918 . E. S. Mittler & Sohn, Herford 1994, ISBN 978-3-920602-18-9 , pp. 169 .