The air intake system includes a first piece, an intermediate piece constituting a surge tank and joined to the first piece, and a second piece including an air intake passage upstream portion in communication with the surge tank, the second piece being jo...

A fuel supply device for an internal combustion engine including a throttle valve (18) and an airbox (13) is provided with a main injector (21) disposed at a downstream side of the throttle valve (18), an auxiliary injector (22) disposed at an upstream sid...

A fuel supply device comprises an air cleaner, an air funnel (8), and a fuel injector (14) to jet a fuel toward an opening of the air funnel (8). The air cleaner comprises a rear wall (11l) extended near a peripheral edge of the opening of the air funnel (...

This intake system structure of a power unit (5), which is mounted to a vehicle (1), and in which an internal combustion engine (2) and a power transmission 3 are integrated with each other, an air cleaner (50) is provided at a position away from a cylinde...

The invention relates to a fuel supply system comprising an air intake chamber (5b) having an air inlet opening, an air intake path (9) including an aperture (24a,42a) that opens towards an inside of the air intake chamber (5b) for guiding the air in the a...

The air intake system (1) has an air collector (2) to which the combustion air is directed and a number of suction pipes (3) leading from the air collector, each formed by at least 2 longitudinally divided sections (4,5), one of which is integral with the ...

An intake manifold includes an upper shell, a lower shell, and a middle shell that interconnects the upper and lower shells. The lower shell has a plurality of longitudinally spaced shell ports. Each shell port is adapted for installation over a correspond...