Snowmobile
A snowmobile includes an engine including a crankshaft, a driving shaft rotatable together with the crankshaft, an endless track belt drivable by the driving shaft, and a vehicle body frame including a wall portion defining an engine room accommodating the engine and engine support portions and supporting the engine. At least a portion of the wall portion is made of a carbon fiber-reinforced plastic material and overlaps the engine as seen in a side view.
1. A snowmobile comprising:
an engine including a crankshaft;
a driving shaft rotatable together with the crankshaft;
an endless track belt drivable by the driving shaft; and
a vehicle body frame including a wall portion that defines an engine room that accommodates the engine and an engine support portion that supports the engine;
wherein
at least a portion of the engine room and the engine support portion including the wall portion is made of a carbon fiber-reinforced plastic material, and the portion made of the carbon fiber-reinforced plastic material overlaps the engine as seen in a side view.
2. The snowmobile according to claim 1 , wherein at least a portion of the wall portion includes a first layer made of at least a carbon fiber-reinforced plastic material and a second layer made of a carbon fiber-reinforced plastic material.
3. The snowmobile according to claim 1 , wherein the portion of the wall portion that is made of the carbon fiber-reinforced plastic material includes a reinforcing member provided therein.
4. A snowmobile comprising:
an engine including a crankshaft;
a driving shaft rotatable together with the crankshaft;
an endless track belt drivable by the driving shaft;
a vehicle body frame including a wall portion that defines an engine room that accommodates the engine and an engine support portion that supports the engine; and
a protection member; wherein
at least a portion of the engine room and the engine support portion including the wall portion is made of a carbon fiber-reinforced plastic material, and the portion made of the carbon fiber-reinforced plastic material overlaps the engine as seen in a plan view;
the wall portion includes a bottom wall portion located below the engine and made of a carbon fiber-reinforced plastic material; and
the protection member is located below the bottom wall portion and protects the bottom wall portion.
5. The snowmobile according to claim 4 , wherein the protection member covers an entirety of the bottom wall portion.
6. The snowmobile according to claim 4 , wherein the protection member is made of a metal material or a resin material.
7. A snowmobile comprising:
an engine including a crankshaft;
a driving shaft rotatable together with the crankshaft;
an endless track belt drivable by the driving shaft;
a vehicle body frame including a wall portion that defines an engine room that accommodates the engine and an engine support portion that supports the engine; and
a steering shaft secured to a handle; wherein
at least a portion of the wall portion is made of a carbon fiber-reinforced plastic material and overlaps the engine as seen in at least a plan view or a side view;
the vehicle body frame includes a top vehicle body frame and a bottom vehicle body frame located below the top vehicle body frame;
the wall portion includes a top wall portion located above the engine and made of a carbon fiber-reinforced plastic material, the top wall portion defining a portion of the top vehicle body frame; and
the top wall portion supports the steering shaft and supports the bottom vehicle body frame at least at two points.
8. The snowmobile according to claim 7 , wherein the top wall portion supports the steering shaft at two points.
9. The snowmobile according to claim 7 , further comprising a seat supported by the top wall portion.
10. The snowmobile according to claim 7 , further comprising:
a fuel tank covered by the top vehicle body frame; and
a fuel tank cover that covers the fuel tank; wherein
the top wall portion defines at least a portion of the fuel tank cover.
11. The snowmobile according to claim 7 , further comprising:
an air suction silencer that supplies air to the engine; wherein
the top wall portion defines a portion of the air suction silencer.
12. The snowmobile according to claim 7 , further comprising:
a vehicle body cover located outward of the engine; wherein
at least a portion of the top vehicle body frame defines a portion of the vehicle body cover.
13. The snowmobile according to claim 7 , wherein the engine support portion is provided in the top wall portion.
14. The snowmobile according to claim 7 , wherein the top vehicle body frame and the bottom vehicle body frame are integral with each other and defined by a single unitary member.
15. A snowmobile comprising:
an engine including a crankshaft;
a driving shaft rotatable together with the crankshaft;
an endless track belt drivable by the driving shaft;
a vehicle body frame including a wall portion that defines an engine room that accommodates the engine and an engine support portion that supports the engine;
a left ski located to the front of the engine;
a right ski located to the front of the engine and to the right of the left ski;
a left arm connected to the left ski; and
a right arm connected to the right ski; wherein
at least a portion of the wall portion is made of a carbon fiber-reinforced plastic material and overlaps the engine as seen in at least a plan view or a side view;
the wall portion includes a left wall portion located to the left of the engine and made of a carbon fiber-reinforced plastic material and a right wall portion located to the right of the engine and made of a carbon fiber-reinforced plastic material;
the engine support portion is provided in each of the left wall portion and the right wall portion;
the left arm is swingably supported by the left wall portion at two points; and
the right arm is swingably supported by the right wall portion at two points.