An air-intake duct (19) for a vehicle, which couples a throttle device (18) for controlling an air-intake amount of an engine (15) to an air cleaner (20) for cleaning air guided to the throttle device (18); includes a tubular wall (19a) forming an inlet (1...

Motorcycle having an injector (26) arranged in and mounted to a vicinity of an opening end portion of the intake passage of each cylinder (2) of the engine (1), said opening end portion facing an inside of an air intake box (12) or intake silencer to which...

An intake arrangement for an internal combustion engine, including an intake manifold (1;100) including an intake collector (2;102) and a plurality of branch pipes (4A-4D;104A-104D) connected with the intake collector. The branch pipes extend in substantia...

Fuel supply device (25) for a motorcycle engine (1) having an injector (26) arranged in and mounted to a vicinity of an opening end portion (21) of an intake passage of each cylinder of the engine (1).

An intake manifold (10) includes a fuel rail cavity (30) which receives a metallic fuel rail (14) enclosed by a molded fuel rail cavity cover (32). The fuel rail (14) communicates with each of a plurality of engine cylinders (16) through a fuel module (18)...

An intake manifold (10) includes an integral fuel rail (14) at least partially surrounded by a volume (22). The volume (22), being adjacent the fuel rail (14), minimizes the permeation of fuel out of the fuel rail (14). The volume (22) is also utilizable a...