JPS5897577A - Feeder for fuel in motorcycle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel fuel supply device for a motorcycle, and more specifically, it is provided with two fuel tanks, a first tank and a second tank, and a By installing a fuel quantity sensor in the second tank and a pump in the second tank, when the fuel level in the first tank decreases and the remaining quantity sensor outputs an output, it can be activated automatically or manually by operating an electric switch. The present invention relates to a fuel supply device for a motorcycle configured to operate a pump to supply fuel to a fuel carburetor in a second tank.

In conventional fuel supply systems for motorcycles, there is one tank for storing fuel, and this one tank forms a part for storing reserve fuel for use when the fuel runs out. That's what I do. Normally, fuel from the main tank is fed to the carburetor, and when this runs out, the fuel cock is operated to switch to the auxiliary tank and supply reserve fuel. It is true.

In this way, the conventional fuel supply system has one fuel tank, and the driver himself has to deal with gas shortages by operating the two fuel tanks for the auxiliary tank installed on this tank. There were problems in that it was slow to notice when the fuel was running out, and it took time and effort to operate the fuel cock, which has a mechanical structure.

The present inventor has devised the present invention in order to effectively solve the above-mentioned problems, and the object of the present invention is to provide a primary tank corresponding to a main tank in a motorcycle.
tank and a second tank equivalent to a sub-tank, and when the fuel in the normally used first tank decreases to a set amount, the remaining amount sensor operates to detect this. The pump in the second tank is actuated automatically by giving a warning to the driver using the output signal of the second tank, or manually by giving a warning to the driver and operating a switch. An object of the present invention is to provide a fuel supply device for a motorcycle configured to feed fuel in a tank to a capretor.

It is an object of the present invention to clearly notify the driver of the fuel depletion state through the above configuration, to facilitate fuel supply to the reserve tank, and to improve the appearance of the area around the tank in terms of design. An object of the present invention is to provide a fuel supply device for a motorcycle.

A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

First, the arrangement of the fuel supply device according to the present invention in a motorcycle will be explained. FIG. 1 shows an overall side view of a motorcycle, where 1 is a front wheel suspended on a front fork 2, 3 is a steering handle, and 4 is a rear wheel suspended on a swing arm 5. The engine 7 is placed on the frame vibro located between the two. engine 7
A main tank 8, which is a first tank, and a seat 9 are arranged on the upper side, and a sub-tank 10, which is a second tank, is arranged below the seat 9.

The main tank 8 and the sub-tank 10 are each connected by a separate fuel supply pipe 11.12 to a capretor 13 provided in the engine part. The fuel supply system according to the present invention is comprised of the main tank 8, the sub-tank 10, and the following devices. Next, in FIG. 2, only a portion of the fuel supply system is taken out and enlarged to show its structure in detail.

In FIG. 2, 8a is a fuel storage section of the main tank 8, and a connecting pipe 14 is provided between the lower part of this storage section 8a and the sub-tank 13D to communicate the two. Therefore, when the cap 8bv of the main tank 8 is removed and fuel is supplied to the main tank 8 from its supply port, the supplied fuel is also supplied to the sub-tank 10 through the coupling pipe 14. Further, a further pipe 15 provided between the main tank 8 and the sub-tank 10 is a pipe for a breather of the sub-tank.

Inside the main tank 8, a remaining amount sensor 16 is provided at a predetermined position below the reservoir 8a.

The remaining amount sensor 16 does not operate when sufficient fuel is supplied to the main tank, and the amount of fuel in the main tank 8 decreases to the set amount determined by the location of the remaining amount sensor 16. Did it work when the set amount was reached? It is configured to output an electrical signal indicating that it has been detected. Electrical wiring is omitted in the figure.

On the other hand, a pump 17 is provided inside the sub-tank 10 for delivering fuel in the sub-tank to the carburetor 13. The suction side of the pump 17 is connected to the inside of the subtank at the lower end of the subtank 10 by a pipe 18, and the delivery side of the pump 17 is connected to the fuel pipe 12.
It is connected to the capretor 13 by. pump 17
is an electrical signal under given] conditions? It operates upon receiving the fuel and sends it to the fuel capretor in the sub tank via the fuel pipe 12. In this way, the fuel in the sub-tank 10 is configured to be evacuated by the pump 17, so there is no need to rely on natural fall to drain the fuel in the sub-tank 10.
The arrangement position can be determined freely regardless of the position of the capretor 13. The electrical wiring of the pump is omitted in the figure.

On the other hand, the main tank 8 is arranged above the carburetor 13, and the fuel in the main tank is supplied to the carburetor 13 via the fuel pipe 11 by natural falling.

FIG. 3 shows the electrical relationship between the remaining amount sensor 16 and the pump 17, and each element is schematically indicated by an i-lock.

Reference numeral 19 is a warning indicator disposed in the instrument section in front of the driver's seat, and 2° indicated by an imaginary line is an electric switch for operating the pump 17 provided in the handle.

This switch 2° is operated by the driver who visually recognizes the display on the warning display 19. The illustrations are shown with imaginary lines because they are not necessarily required.

The operation of the fuel supply device having the above configuration 2 will be explained next.

The fuel supply device shown in FIG. 2 has one fuel filler port. When fuel is supplied from the supply port, the fuel is supplied to the main tank 8 and the sub tank 10 at the same time. main tank 8
When the carburetor is full of fuel, fuel is supplied to the carburetor 13 through the pipe 11. When the amount of fuel in the main tank 8 decreases to a predetermined amount provided by the remaining amount sensor 16, the remaining amount sensor 16 detects that the remaining amount has reached the set amount, and outputs a signal related to this detection. do. This signal Sl is sent to the display 19 and the pump 17, and the display 19
This notifies the driver of the decrease in fuel in the main tank 8, and also activates the pump 17 to fill the sub tank 1.
0 to start feeding the carburetor 13Vc through the fuel supply pipe 12.

In this way, the driver knows whether the main tank 8 is out of gas, and the vehicle continues to run smoothly by automatically supplying fuel from the sub-tank 10, eliminating the need for the driver to switch tanks. do not have.

As described above, it is possible to electrically connect the remaining amount sensor 16 and the pump 17 and automatically operate the pump 17 using the output signal of the remaining amount sensor 16. As shown in the figure, an electric switch 20'2 is installed near the steering wheel of the vehicle, and a warning indicator 19 is installed from the driver's seat.
It is also possible to electrically configure the electrical switch 20 to be operated by visually recognizing the pump 17, thereby operating the pump 17.

FIG. 4 shows a second embodiment of the present invention. In this embodiment, the main tank and sub-tank are not connected by a communicating pipe, but each has an independent oil supply system. It is configured to have. Therefore, the main tank 21 and the sub tank 22 each have a fuel supply section 21a.

22a'Y is provided. Reference numerals 11 and 12 are fuel supply pipes connecting the main tank 21, the sub-tank 22, and the capretor 13, and this structure is the same as in the previous embodiment. Further, 16 provided in the main tank 21 is a remaining amount sensor, and 17 provided in the sub tank 22 is a pump, which includes the remaining amount sensor 16, the pump 17, a warning indicator, and electricity for operating the pump 17. The electrical configuration for the physical switch is the same as that shown in FIG.

According to the second embodiment, there is no need to connect the main tank 21 and the sub-tank 22, so it is possible to reduce the labor involved in assembling and removing the main tank, and the pump 17 is installed inside the sub-tank. Since the pump 17 only has to work to supply fuel, the operating time of the pump 17 is shortened and the life of the pump is extended.

As is clear from the above description, the present invention provides the following effects.

It is possible to eliminate the fuel cock, which has a mechanical structure like that of conventional tanks, and improves the design around the tank. I can do it. Further, since the trouble of operating the fuel cock can be eliminated and switching to the auxiliary tank can be performed automatically or manually electrically, operational operability can be improved. Furthermore, since the electric device can notify the driver of the gas shortage condition, the driver can accurately know the vehicle status.

In addition, since fuel is supplied to the second auxiliary tank by a pump, the location of the second tank can be determined freely, increasing flexibility in vehicle design. became. Since the pump is operated only when there is a gas shortage, the load is light and the pump itself has the advantage of less wear and tear.

Furthermore, since motorcycles are equipped with at least two tanks, the amount of fuel that can be loaded increases, making it possible to extend the distance traveled with one fuel supply.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a side view of a motorcycle equipped with a fuel supply device according to the present invention, and FIG. 2 is a relational diagram showing only the main parts of the fuel supply device in an enlarged manner. FIG. 3 is a block diagram showing electrical relationships in the fuel supply system, and FIG. 4 is a diagram similar to FIG. 2 showing a second embodiment of the present invention. In the drawing, 8.21 is the first tank, the main tank, and 10.22 is the second tank, the saf. 16 is a remaining amount sensor, 17 is a pump, 19 is an indicator, and 20 is an electric switch. Patent applicant Honda Motor Co., Ltd. Agent Patent attorney 2 1) Yoichi Department Patent attorney Kunihiko Ohashi Figure 3

Claims (3)

[Claims] (1) In a motorcycle, there is a first tank that supplies fuel to the engine by its own weight, and a second tank that has a built-in pump and supplies fuel to the engine by the operation of the pump. and a sensor for detecting the remaining amount of fuel is attached to the first tank, and the pump is configured to operate when the sensor detects the set value and operates. Fuel supply system for motorcycles. (2) In the scope of claim 1, 1
Al17) A round fuel supply device for a motorcycle characterized by being configured so that a tank and a second tank communicate with each other. (3) The fuel supply device for a motorcycle as set forth in claim 1, characterized in that the fuel supply device is configured to supply fuel to the first tank and the second tank separately.