Fuel tank for a two-wheeled motor vehicle

Details Fuel tank for a two-wheeled motor vehicle Fuel tank for a two-wheeled motor vehicle

1999-09-10

2001-05-22

Hurley, Kevin (Department: 3611)

Land vehicles

Tank or boiler

Service tank

Reexamination Certificate

active

06234531

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an improvement in a fuel tank for a two-wheeled motor vehicle
2. Description of Related Art
Fuel tanks for two-wheeled motor vehicles are known. For example, “an intake introducing device in a two-wheeled motor vehicle” is disclosed in Japanese Patent Laid Open No. 28074/90 and “a frame of a two-wheeled motor vehicle” is disclosed in Japanese Patent Laid Open No. 64887/88.
In
FIG. 1
of Japanese Patent Laid Open No. 28074/90, an air cleaner
9
is disposed on a main frame
6
and a fuel tank
7
is disposed so as to cover the upper surface of the air cleaner
9
from behind.
In
FIG. 1
of Japanese Patent Laid Open No. 64887/88, an air cleaner
12
is mounted to a main frame member
4
and a fuel tank
15
is disposed so as to cover the upper surface and side faces of the air cleaner
12
. A through window
34
is formed sideways of the fuel tank
15
for allowing hot air from an engine
9
to escape.
In the above Japanese Patent Laid Open No. 28074/90, there is no lapping of the fuel tank
7
on the side faces of the air cleaner
9
. Furthermore, most of the tank capacity depends on the rear portion of the fuel tank
7
. Thus, it is difficult to increase the tank capacity.
In the above Japanese Patent Laid Open No. 64887/88, the tank capacity can also depend on the side faces of the air cleaner
12
in comparison with the structure in Japanese Patent Laid Open No. 28074/90, because the fuel tank
15
is formed so as to cover the upper surface and side faces of the air cleaner. However, it is necessary that another component machined in the shape of a pipe be welded to the tank body in order to form the through window
34
sideways of the fuel tank
7
. This results in the machining of the fuel tank becoming complicated and with conventional seam welding alone, it is impossible to fabricate the fuel tank.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide a fuel tank having a sufficient tank capacity and capable of being machined easily.
In order to achieve the above-mentioned object, according to a first aspect of the present invention, a two-wheeled motor vehicle has a pair of right and left main pipes extending backward from a head pipe. The main pipes are generally rectilinear in side view, and a fuel tank is disposed above the main pipes. Furthermore, the fuel tank includes a bottom plate recessed from above the main pipes up to an upper position, an air cleaner is disposed within the recess, side openings open downward are formed in side positions of the recess, and intake ducts are disposed respectively in the side openings.
Thus, a recess is formed in the bottom plate of the fuel tank from above the main pipes up to an upper position and an air cleaner is disposed within the recess. Furthermore, side openings open downward are formed sideways of the recess, and intake ducts are disposed respectively in the side openings, whereby a sufficient capacity of the fuel tank is ensured.
In the first aspect of the present invention, it is not necessary that holes or the like be formed in side faces of the fuel tank for connection of intake passages to the air cleaner. Therefore, it is possible to facilitate the machining of the fuel tank.
A second aspect of the present invention includes cover members for covering the side openings of the recess disposed along the fuel tank.
Disposing cover members for covering the side openings of the recess along the fuel tank contributes to improvement in appearance of the two-wheeled motor vehicle.
Further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.


REFERENCES:
patent: 4509613 (1985-04-01), Yamaguchi
patent: 4712637 (1987-12-01), Mogi et al.
patent: 5560446 (1996-10-01), Onishi
patent: 63-64887 (1988-03-01), None
patent: 2-28074 (1990-01-01), None
patent: 4-78781 (1992-03-01), None
patent: 5-16856 (1993-01-01), None

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