Abstract
Gas-Den (Predecessor of Hino Motors Ltd. and Komatsu Zenoah Co.) produced Japan's first domestic designed air cooled radial Aero-Engine in 1928. It was named as "Shimpu" or called sometimes as "Jimpu" or "Kamikaze" meaning of divine wind. One of the characteristics of this engine is an installation of "Mixing Fan" that is a distributor of mixture gas for radial arranged cylinders. This paper describes how to applied this unique idea on this Japanese first aero engine and what was the origin. The original "Shimpu" has been stored at the Tokyo Metropolitan College of Industrial Technology (TMCIT). Therefore, its Mixing Fan on the engine has surveyed by fiber scope and confirmed.
