The Daimler-Benz DB 601 was a German aircraft engine built during World War II. It was a liquid-cooled inverted V12, and powered the Messerschmitt Bf 109, Messerschmitt Bf 110, and many others. Approximately 19,000 601's were produced before it was replaced by the improved Daimler-Benz DB 605 in 1942.
The DB 601 was basically an improved DB 600 with direct fuel injection. Fuel injection required power to be taken off the drive shaft, but in return, improved low-RPM performance significantly and provided aerobatic performance in maneuvers where a carburated engine like the British Rolls-Royce Merlin would lose power when the carburetor ran dry.
The 601's fuel injection provided a significant boost in performance which its competitor, the Junkers Jumo 210, did not match for some time. By the time the fuel-injected 211 arrived, the 601 had already cemented its place as the engine for high-performance designs like fighters, high-speed bombers, and similar roles. The 211 would be relegated to bombers and transport aircraft. In this respect, the 601 was the counterpart to the Merlin engine of roughly the same size and power.
The DB 601Aa was licence-built in Japan by Aichi as the Atsuta, by Kawasaki as the Ha40, and in Italy by Alfa Romeo as the R.A.1000 R.C.41-I Monsone.
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