Yamabiko Corporation

Shouta Genba

Takahiro Kinoshita

Takahiro Yamazaki

Kenta Ito

An engine () is a four-flow scavenging type engine. Four scavenging ports () include: first right and left scavenging ports ((lef-) and(ref-)) that lie on a side relatively away from an exhaust port () and that lie facing each other with a cylinder () in between; and second right and left scavenging ports ((lef-) and(ref-)) that lie closer to the exhaust port () than first right and left scavenging ports do and that lie facing each other with the cylinder () in between. The second left scavenging port and the first right scavenging port that make up a first mutually diagonal set (Diag-No.) have different opening timings from those of the first left scavenging port and the second right scavenging port that make up a second mutually diagonal set (Diag-No.).

Growing community of inventors

Tokyo, Japan

Shouta Genba