Patent ID: 7543450
Filing Date: 2009-06-09
Classification: F02B,F02M,Y02T

Abstract:
1. An air intake structure for a small watercraft including an engine mounted on a watercraft body so that a plurality of cylinders are arranged in a row in a forward and rearward direction of the watercraft body, the air intake structure comprising: an intake passage disposed on at least one side of the cylinders so as to communicate with the cylinders; an exhaust passage disposed on the other side of the cylinders so as to communicate with the cylinders; and a supercharger disposed rearwardly of the engine so as to communicate with the intake passage via an inter-cooler; wherein the inter-cooler is disposed rearwardly of the engine with a distribution passage communicating with the intake passage being disposed forward of the inter-cooler and on the one side of the cylinders so as to extend in the forward and rearward direction of the watercraft body; and the inter-cooler communicates with a rear end of the distribution passage, wherein the inter-cooler includes an air inlet disposed on a front wall thereof which faces the forward direction of the watercraft body, the air inlet being adapted to introduce air from the supercharger into said inter-cooler, wherein the inter-cooler is formed substantially in a shape of a rectangular-sided box which has a long dimension that extends transversely in a direction that is substantially horizontal and perpendicular to the forward and rearward direction of the watercraft body, so that the front wall of the inter-cooler faces a rear side of the engine.