EntityQ6960187· pop 5· linked from 23 articlesNakajima MamoruSign in to save1940s Japanese piston aircrat engineConnectionsKawasaki Ha40EntityR-2600 Twin CycloneEntityInternational Standard Book NumberEntitypistonEntityaircraft engineEntityNational Air and Space MuseumEntityreciprocating engineEntitycompression ratioEntityengine displacementEntitysuperchargerEntityvalvetrainEntityNakajima B6N TenzanEntityImperial Japanese Air ForceEntityMitsubishi Ki-67 HiryuEntityNakajimaEntityNakajima Ki-49 DonryuEntitystrokeEntityaerospace manufacturerEntityR-2800 Double WaspEntityDouglas DC-4EEntityCategories14-cylinder engines1940s aircraft piston enginesAircraft air-cooled radial piston enginesNakajima aircraft engines