Daimler-Benz DB 600 series

DB 600 series
DB 600A in a Heinkel He 111B nacelle

The Daimler-Benz DB 600 series were a number of German aircraft engines designed and built before and during World War II as part of a new generation of German engine technology. The general layout was that of a liquid-cooled, inverted V12 engine. The design originated to a private venture project of Daimler-Benz, the F4 engine. Most newer DB engine designs used in WW2 were based around this engine. The decision by the RLM to concentrate on manufacturing aircraft engines using fuel injection systems rather than carburetors meant that the DB 600 was quickly superseded by the otherwise similar DB 601 that included direct fuel injection. Later DB series engines grew in bore, stroke, and horsepower, including the DB 603 and DB 605, but were generally similar to the pattern created with the DB 600.

Based on the guidelines laid down by the Reichswehrministerium (Imperial Ministry of Defence), in 1929 Daimler-Benz begun development of a new aero engine of the 30-litre class: a liquid-cooled inverted-Vee 12-cylinder piston engine. This became the F4, and by 1931 two prototypes were running on the test bench. These were followed by the improved F4 B, which became the prototype for the DB 600.

In 1933, Daimler-Benz finally received a contract to develop its new engine and to build six examples of the DB 600. For the year after, the DB 600 was the only German aero engine in the 30-litre class. In total, 2,281 DB 600s were built. Unlike the later engines of the DB 600 series, fuel mixture was developed by carburetor.

Variants:

Developed in 1934, the A and B variants were identical except for their reduction gear ratios: the former was intended for the Bf 109 single-engine interceptor, the latter variant for the Bf 110 heavy fighter.

Power at sea level
Kurzleistung (short-term output): 1000 PS PS for 5 minutes
Kampfleistung (combat output): 900 PS PS for 30 minutes
Dauerleistung (continuous output): 900 PS PS, continuous

As the A/B, but with supercharger and 13,120 feet (4000 m) rated altitude.

Power at Sea level
Kurzleistung (short-term output): 950 PS PS for 5 minutes
Power at 13,120 feet (4000 m) rated altitude
Kurzleistung (short-term output): 910 PS PS for 5 minutes
Kampfleistung (combat output): 850 PS PS for 30 minutes
Dauerleistung (continuous output): 800 PS PS, continuous

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