Junkers Jumo 207 D-V2 In-line 6 Diesel Engine

Object Details

Physical Description: Type: Reciprocating, in-line, 6 cylinders with 12 pistons, two cycle, liquid-cooled, Diesel, supercharger; Power rating: 746 kW (1,000 hp) at 3,000 rpm; Displacement: 16.6 L (1,526 cu in.); Bore and Stroke: 105 mm (4.1 in.) x 2 x 160 mm (6.3 in.); Weight: 648.6 kg (1,430 lb)
Summary: Dr. Hugo Junkers started development of his Diesel aircraft engines in a small factory at Dessau, Germany in 1911. His early engines functioned on the two-stroke cycle principle with piston-controlled parts, as did his later Junkers Jumo Diesels. Among the advantages of later, refined Diesel aircraft engines were lower specific fuel consumption (for long-range applications), lower exhaust gas temperature (for exhaust-driven supercharger installations), and reduced fire hazard as compared to conventional reciprocating aircraft engines.; The Jumo 207 was a Jumo 205 with a turbo-supercharger. A Diesel operating on a two-stroke cycle, it incorporated six cylinders and 12 opposed pistons (i.e. 2 per cylinder) in an in-line, liquid-cooled configuration. The Jumo 207 could maintain its sea-level rated power to approximately 7,900 m (26,000 ft.). The Jumo 207 A and B powered the Junkers Ju 86 P and R reconnaissance/bomber aircraft that had an absolute ceiling of approximately 15,000 m (49,000 ft.).

Credit Line: Transferred from the U.S. Navy, Naval Supply Center, Cheatham Annnex, Williamsburg, Virginia.

Circa World War II

Materials: Magnesium, Paint, Steel, Aluminum, Nickel plating
Dimensions: Height 132.6 cm (52.2 in.), Width 59.9 cm (23.6 in.), Depth 218.4 cm (86 in.)

National Air and Space Museum

GUID (Link to Original Record): http://n2t.net/ark:/65665/nv99bb8ccb7-affd-4721-b4d4-bbfdc4412060