Auto Union developed the 12-cylinder Type D Grand Prix racing car for the 1938 racing season, in which a new international Grand Prix rule limited the size of the engine to 3 litres in capacity.
In 1939, a modified version of the Type D was introduced. A characteristic feature of this layout was the Roots dual compressor, the installation of which required an additional air box to be incorporated in the bonnet. The Type D with dual compressor made its first race appearance on 23 June 1939 at the Belgian Grand Prix at Spa-Francorchamps.
In 1939, a modified version of the Type D was introduced. A characteristic feature of this layout was the Roots dual compressor, the installation of which required an additional air box to be incorporated in the bonnet. The Type D with dual compressor made its first race appearance on 23 June 1939 at the Belgian Grand Prix at Spa-Francorchamps.
Engine: 12-cylinder in V arrangement, with 2-stage Roots supercharger
Displacement: 2,985 cc
Power: 485 hp at 7,000 rpm
Maximum speed: 330 km/h
Series: 1939
Displacement: 2,985 cc
Power: 485 hp at 7,000 rpm
Maximum speed: 330 km/h
Series: 1939
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