JPS5873437A - Fuel tank system of auto bicycle - Google Patents

Abstract

PURPOSE:To prevent a pipe from being damaged by arranging its aperture apart from the inserting direction of a fuel filler gun in a system that a breather pipe connected to a subtank is opened in a main tank. CONSTITUTION:A fuel tank 4 is constituted separately with a main tank 7 provided with a front fuel filler port 5 and a rear fuel outlet 6 and a sub-tank 9 povided with a fuel inlet 8 connected to the fuel outlet 6. Furthermore, a breather pipe 14 is introduced from the sub-tank 9 and extends through the main tank 7 from the rear to the front, and the tip 14a of the breather pipe is opened upward near the fuel filler port 5. In this case, the pipe tip 14a is arranged at a position apart from the inserting direction of a fuel filler gun 15 when it is inserted into the filler port 5. Thereby, the pipe 14 can be prevented from being damaged by the gun 15 and the fuel can be also prevented from flowing into the pipe 14 when being filled into the tank.

Description

[Detailed description of the invention] The present invention relates to a fuel tank device for a motorcycle.

The applicant of the present invention has previously proposed this system by installing an engine and a fuel tank 2 above the engine in the middle of a vehicle body having front and rear wheels, and installing the tank into a front fuel tank having a fuel inlet at the front and a fuel outlet at the rear. A type consisting of a main tank and a rear lower sub-tank having a fuel volume connected to the fuel outlet, and further leading out a pleather pipe to the sub-tank and opening the pleather pipe at its tip into the main tank. However, in this case it is preferable that the opening is not affected by the injection of fuel by the injection gun.

The purpose of the present invention is to obtain a device that meets these requirements, and includes an engine in the middle of a vehicle body having front and rear wheels, a fuel tank above the engine, and a fuel tank in the front. It consists of a front main tank having a fuel inlet and a rear fuel outlet, and a rear lower sub-tank having a fuel inlet connected to the fuel outlet. In the type that opens into the main tank at the tip, the tip is opened at a position away from the insertion direction of the fuel injection gun inserted through the injection port.

An example of implementing the present invention will be explained with reference to the attached drawings.

In the drawing, (1) indicates a vehicle body, and the vehicle body (1) includes front and rear wheels (2), an engine (3) in the middle thereof,
Furthermore, the fuel tank (4) has a front fuel inlet (5) and a rear fuel outlet (t6). It is divided into a main tank (7) and a sub-tank (9) on the rear lower shaft having a fuel inlet (8) connected to the fuel outlet (6). The fuel passage Qi leading to the outlet is connected to the engine (3) side, and a strainer tt3 and a fuel pump hot water are intervened therein.

The sub-tank (9) is equipped with a pleaser pipe A4 extending in communication with the upper part of its interior, and this is opened into the main tank (7) at its tip (-14 m). The pipe alJ extends inside the main tank (7) from the rear to the front and opens upward in the vicinity of the fuel inlet (5).The fuel inlet (5) is, for example, a fourth As shown in the figure, the injection gun ae is freely inserted, and fuel is supplied through it.The direction of insertion is front and back as shown in the figure. According to the present invention, the above-mentioned tip (1
4m) at a position removed from this, and thus the tip (1
4 m) so that the function of the pipe I would not be impaired due to the inflow of fuel.

According to the present invention, the tip of the pleather pipe is opened at a position away from the insertion direction of the fuel gun in the fuel injection port, and when fuel is supplied by the gun, the fuel is guided into the pipe. The function of the pipe is not impaired, and this has the effect of making fuel replenishment simple and reliable.

[Brief explanation of drawings]

Figure 1 is a side view of an example of a motorcycle equipped with the device of the present invention, Figure 2 is a side view of its fuel tank, Figure 5 is its lower rIjJ diagram, and Figure 4 is its main parts. FIG. 2 is an enlarged cross-sectional side view. (1)...Car body (2)(2)...Car
Wheel (3)...Engine (4)...Fuel tank (5)...Fuel inlet (6)...Fuel outlet (7)...Main tank (8)...Fuel volume 9)...Sub tank a◆Pleaser pipe (1
4a)...Tip (19...2 people outside the injection gun)

Claims (1)

[Claims] An engine is provided in the middle of a vehicle body having front and rear wheels, and a fuel tank above the engine is provided, and the tank is connected to a front main tank having a front fuel inlet and a rear fuel outlet, and the fuel outlet. and a rear lower sub-tank having a fuel inlet, and a pleather pipe is led out to the sub-tank and its tip opens into the main tank. A fuel tank device for a two-wheeled motor vehicle having an opening at a position away from the insertion direction of a fuel injection gun inserted through the fuel tank device.