Honda Motor Co., Ltd.

Hiromitsu Endo

Masafumi Taki

Yoshiteru Oikawa

A saddled vehicle includes: a fuel injection valve mounted in a cylinder head from one side surface of the cylinder head and injecting fuel toward a combustion chamber; and a fuel pump that supplies fuel to the fuel injection valve in response to a generated pump pressure. The fuel pump is disposed in a space between main frames and a down frame and in the one side surface of the cylinder head. Accordingly, there is provided a layout of the fuel pump capable of sufficiently protecting the fuel pump without a need to restrict a position of an internal combustion engine.

Saddled vehicle

An internal combustion engine includes an auxiliary chamber bulkhead, the auxiliary chamber bulkhead including: a peripheral wall portion that is inserted in a vertical hole extending from a combustion chamber along a reference axis and that is in contact with an inner wall of the vertical hole about the reference axis; and a bottom wall portion that is continuous from the peripheral wall portion and that bulges from the vertical hole toward the combustion chamber, the peripheral wall portion and the bottom wall portion defining an auxiliary chamber that communicates with the combustion chamber. An ignition plug is disposed above the peripheral wall portion along the reference axis. A fuel injection valve is disposed in a position inclined with respect to the reference axis toward an opening formed in an inner surface of the peripheral wall portion.

Growing community of inventors

Wako, Japan

Hiromitsu Endo