Lorraine 7Mb Mizar

7M Mizar
Type	7-cylinder air-cooled piston aero engine
National origin	France
Manufacturer	Lorraine-Dietrich

The Lorraine 7M Mizar, also called the Lorraine 240CV Mizar, was a seven-cylinder air-cooled radial engine designed and built in France during the 1920s and 1930s. Nominal power was given as 240 hp (180 kW) at 1500rpm (maximum continuous power), with a maximum output of 283 hp (211 kW) at 1800 rpm.

Data from Société Générale Aeronautique

...
Wikipedia