Patent ID: 7878174

Claim:
In a multi-cylinder engine including first and second banks, first and second throttle body groups, as well as a pair of side plates; each of the first and second banks including a plurality of cylinders arranged in a cylinder arrangement direction, the first and second banks cooperating to define a V-shape; each of the first and second throttle body groups comprising a plurality of throttle bodies arranged side-by-side in the cylinder arrangement direction; each of the throttle bodies including a throttle bore, and a fuel injection valve operatively associated with each of the throttle bodies, respectively; the improvement comprising a substantially H-shaped fuel supplying structure bounded in the cylinder arrangement direction by the first and second side plates and bounded in a perpendicular direction with respect to the cylinder arrangement direction by the first and second throttle body groups, including: a first fuel supply conduit extending in the cylinder arrangement direction and connecting to the fuel injection valves of the first throttle body group; a second fuel supply conduit extending in parallel to the first fuel supply passage and connecting to the fuel injection valves of the second throttle body group; the paired side plates respectively connecting ends of the first throttle body group to corresponding ends of the second throttle group; a communicating line connecting the first and second fuel supply conduits; and a joint part detachably connected to a distal end of the first fuel supply conduit and configured to communicate with a fuel hose, and wherein a distance between the throttle bores in the respective throttle bodies of the first throttle body group in the cylinder arrangement direction is less than a distance between the throttle bores of the respective throttle bodies of the second throttle body group in the cylinder arrangement direction.