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US 8,408,348 B2Granted
Snowmobile and engine for snowmobile
AssigneeSuzuki Motor Corporation
InventorsHideto Nakamura, Toshio Hayashi
Life of this patent
Estimating the term…
Abstract
A snowmobile having improved drive stability of the vehicle body during steering includes a pair of left and right skis on a front side of the vehicle body, a steering shaft disposed on a front of a saddle type seat for steering the skis, an engine mounted in a cowling that covers the front side of the vehicle body, and a crawler disposed on a rear side of the vehicle body for driving the snowmobile. The engine is mounted by inclining a cylinder axis thereof forward, and the steering shaft is disposed on the front of a cylinder head of the engine.
Claims15
A snowmobile comprising:
- a pair of left and right skis on a front side of a vehicle body,
- a steering shaft disposed on a front of a saddle seat for steering the skis,
- an engine mounted in a cowling that covers the front side of the vehicle body,
- an air box disposed above the cylinder head of the engine,
- a fuel tank disposed above a crankcase of the engine, and
- a crawler disposed below the saddle seat in a rear side of the vehicle body for driving the snowmobile,
- wherein the engine is mounted by inclining a cylinder axis thereof forward so that a cylinder head of the engine is positioned below a horizontal line passing through an upper end of a track housing that covers the crawler, in side view;
- the steering shaft is disposed on the front of the cylinder head of the engine;
- an upper end of the steering shaft is disposed on the front of a vertical line passing through an axial center of a crankshaft of the engine, in side view;
- the fuel tank is disposed on a front side of the saddle seat;
- and
- the air box is disposed on a front side of the fuel tank with a portion of the air box being disposed on a front side of the steering shaft.
9 more elements
An engine for a snowmobile, said snowmobile comprising:
- a pair of left and right skis on a front side of a vehicle body,
- a steering shaft disposed on a front of a saddle seat for steering the skis,
- an air box disposed above the cylinder head of the engine,
- a fuel tank disposed above a crankcase of the engine, and
- a crawler disposed below the saddle seat in a rear side of the vehicle body for driving the snowmobile,
- wherein said engine is mounted in a cowling that covers the front side of the vehicle body by inclining a cylinder axis thereof forward so that a cylinder head of the engine is positioned below a horizontal line passing through an upper end of a track housing that covers the crawler, in side view, an oil filter is disposed below an axial center of a crankshaft in side view;
- an upper end of the steering shaft is disposed on the front of a vertical line passing through an axial center of a crankshaft of the engine, in side view;
- the fuel tank is disposed on a front side of the saddle seat;
- and
- the air box is disposed on a front side of the fuel tank with a portion of the air box being disposed on a front side of the steering shaft.
7 more elements
An engine for a snowmobile, said snowmobile comprising:
- a pair of left and right skis on a front side of a vehicle body,
- a steering shaft disposed on a front of a saddle type seat for steering the skis, and
- a crawler disposed below the saddle seat in a rear side of the vehicle body for driving the snowmobile,
- wherein said engine is mounted in a cowling that covers the front side of the vehicle body by inclining a cylinder axis thereof forward so that a cylinder head of the engine is positioned below a horizontal line passing through an upper end of a track housing that covers the crawler, in side view;
- an oil filter is disposed on a side surface of said engine being an opposite side to a side on which a Continuously Variable Transmission of said engine is disposed;
- and
- an upper end of the steering shaft is disposed on the front of a vertical line passing through an axial center of a crankshaft of the engine, in side view.
4 more elements
An engine for a snowmobile, said snowmobile comprising:
- a pair of left and right skis on a front side of a vehicle body,
- a steering shaft disposed on a front of a saddle seat for steering the skis, and
- a crawler disposed below the saddle seat in a rear side of the vehicle body for driving the snowmobile,
- wherein said engine is mounted in a cowling that covers the front, side of the vehicle body by inclining a cylinder axis thereof forward so that a cylinder head of the engine is positioned below a horizontal line passing through an upper end of a track housing that covers the crawler, in side view;
- a magneto device is disposed on a side surface of said engine being an opposite side to a side on which a Continuously Variable Transmission of said engine is disposed;
- an oil filter is disposed below a magneto cover that covers the magneto device;
- and
- an upper end of the steering shaft is disposed on the front of a vertical line passing through an axial center of a crankshaft of the engine, in side view.
5 more elements
An engine for a snowmobile, said snowmobile comprising:
- a pair of left and right skis on a front side of a vehicle body,
- a steering shaft disposed on a front of a saddle seat for steering the skis, and
- a crawler disposed below the saddle seat in a rear side of the vehicle body for driving the snowmobile,
- wherein said engine is mounted in a cowling that covers the front side of the vehicle body by inclining a cylinder axis thereof forward so that a cylinder head of the engine is positioned below a horizontal line passing through an upper end of a track housing that covers the crawler, in side view;
- a magneto device is disposed on a side surface of said engine being an opposite side to a side on which a Continuously Variable Transmission of said engine is disposed;
- an oil filter is disposed below a magneto cover that covers the magneto device;
- an attachment surface of the oil filter is formed by being directed in the lateral direction;
- and
- an upper end of the steering shaft is disposed on the front of a vertical line passing through an axial center of a crankshaft of the engine, in side view.
6 more elements
An engine for a snowmobile, said snowmobile comprising:
- a pair of left and right skis on a front side of a vehicle body,
- a steering shaft disposed on a front of a saddle seat for steering the skis,
- an air box disposed above the cylinder head of the engine,
- a fuel tank disposed above a crankcase of the engine, and
- a crawler disposed below the saddle seat in a rear side of the vehicle body for driving the snowmobile,
- wherein said engine is mounted in a cowling that covers the front side of the vehicle body by inclining a cylinder axis thereof forward so that a cylinder head of the engine is positioned below a horizontal line passing through an upper end of a track housing that covers the crawler, in side view;
- a starter motor is disposed on the front of and above an axial center of a crankshaft in side view;
- an upper end of the steering shaft is disposed on the front of a vertical line passing through an axial center of a crankshaft of the engine, in side view;,
- the fuel tank is disposed on a front side of the saddle seat;
- and
- the air box is disposed on a front side of the fuel tank with a portion of the air box being disposed on a front side of the steering shaft.
8 more elements
An engine for a snowmobile, said snowmobile comprising:
- a pair of left and right skis on a front side of a vehicle body,
- a steering shaft disposed on a front of a saddle seat for steering the skis,
- an air box is disposed above a cylinder head of said engine,
- a fuel tank is disposed above a crankcase of said engine, and
- a crawler disposed below the saddle seat in a rear side of the vehicle body for driving the snowmobile,
- wherein said engine is mounted in a cowling that covers the front side of the vehicle body by inclining a cylinder axis thereof forward so that a cylinder head of the engine is positioned below a horizontal line passing through an upper end of a track housing that covers the crawler, in side view;
- a starter motor is disposed at a position surrounded by the air box, the fuel tank, and said engine;
- and
- an upper end of the steering shaft is disposed on the front of a vertical line passing through an axial center of a crankshaft of the engine, in side view.
6 more elements
An engine for a snowmobile, said snowmobile comprising:
- a pair of left and right skis on a front side of a vehicle body,
- a steering shaft disposed on a front of a saddle seat for steering the skis, and
- a crawler disposed below the saddle seat in a rear side of the vehicle body for driving the snowmobile,
- wherein said engine is mounted in a cowling that covers the front side of the vehicle body by inclining a cylinder axis thereof forward so that a cylinder head of the engine is positioned below a horizontal line passing through an upper end of a track housing that covers the crawler, in side view;
- a starter motor is disposed on the front of and above an axial center of a crankshaft in side view;
- a fuel tank is disposed above said engine, a recessed portion is formed on the fuel tank, and mounting bosses for fixing the starter motor are formed by being directed to the recessed portion;
- and
- an upper end of the steering shaft is disposed on the front of a vertical line passing through an axial center of a crankshaft of the engine, in side view.
5 more elements
An engine for a snowmobile, said snowmobile comprising:
- a pair of left and right skis on a front side of a vehicle body,
- a steering shaft disposed on a front of a saddle seat for steering the skis,
- an air box is disposed above a cylinder head of said engine,
- a fuel tank is disposed above a crankcase of said engine, and
- a crawler disposed below the saddle seat in a rear side of the vehicle body for driving the snowmobile,
- wherein said engine is mounted in a cowling that covers the front side of the vehicle body by inclining a cylinder axis thereof forward so that a cylinder head of the engine is positioned below a horizontal line passing through an upper end of a track housing that covers the crawler, in side view;
- a starter motor is disposed at a position surrounded by the air box, the fuel tank, and said engine;
- a recessed portion is formed on the fuel tank, and mounting bosses for fixing the starter motor are formed by being directed to the recessed portion;
- and
- an upper end of the steering shaft is disposed on the front of a vertical line passing through an axial center of a crankshaft of the engine, in side view.
7 more elements
An engine for a snowmobile, said snowmobile comprising:
- a pair of left and right skis on a front side of a vehicle body,
- a steering shaft disposed on a front of a saddle seat for steering the skis, and
- a crawler disposed below the saddle seat in a rear side of the vehicle body for driving the snowmobile,
- wherein said engine is mounted in a cowling that covers the front side of the vehicle body by inclining a cylinder axis thereof forward so that a cylinder head of the engine is positioned below a horizontal line passing through an upper end of a track housing that covers the crawler, in side view;
- a starter motor is disposed at a position not protruding upward from a virtual plane connecting an upper end portion of the crankcase of said engine and an upper end portion of the cylinder head of said engine;
- and an upper end of the steering shaft is disposed on the front of a vertical line passing through an axial center of a crankshaft of the engine, in side view.
3 more elements
Dependencies are inferred from the claim text.