US 6,745,862 B2Granted

Snowmobile equipped with a four-cycle engine and intake structure for snowmobile engines

AssigneeSuzuki Motor Corporation

InventorsHideshi Morii, Yasuaki Yatagai, Yutaka Sasaki, Ken Shibano, Hitoshi Matsumura

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Abstract

In a snowmobile, a four-cycle engine is mounted in such a manner that its crankshaft is arranged along the body width direction and the central axis of a cylinder(s) is tilted rearward by angle α with respect to the vertical direction of the body, forming a rear tilted engine. At least part of the engine intake system including an air cleaner box and throttle body, connected to the intake port(s) of the engine is accommodated in the space inside the topmost projected portion of the engine hood. Exhaust is led out to the muffler located in front of the cylinder(s) by the exhaust system connected to the exhaust port(s) at the front of the cylinder head. Further, the intake passage is arranged between the engine body and the steering post.

Claims8

Dependent claims

A snowmobile having a four-cycle engine mounted on a front body thereof and enclosed by an engine hood located in front of a seat, characterized in that the four-cycle engine is mounted in such a manner that a crankshaft is arranged along the body width direction and the central axis of at least one cylinder is tilted rearward with respect to the vertical direction of the snowmobile body, forming a rear tilted engine;

at least part of the engine intake system including an air cleaner box and throttle body, located over the engine and connected to at least one intake port at the rear part of the cylinder head is accommodated in the topmost space of the engine hood;
and exhaust is led out to the front of at least one cylinder by an exhaust system connected to at least one exhaust port of the front part of the cylinder head.

Dependencies are inferred from the claim text.