JPH045377Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a fuel tank mounting structure, and more particularly to an improved fuel tank mounting structure with good assemblability.

<Prior Art> For example, a dual fuel engine is equipped with a main tank for kerosene, the main fuel, and an auxiliary tank for starting gasoline. In particular, when such a dual-fuel engine is used as a general-purpose engine, it is necessary to attach two fuel tanks to the engine, so there are many restrictions on where to install them, and the installation structure is likely to be complicated or fragile. . Furthermore, since the auxiliary tank will be installed in an uneven position, sufficient anti-vibration measures will be required.

Conventionally, an auxiliary tank made of the same material and also pressed was welded to the inside of the main tank, which was made by pressing a steel plate. Not only is workability poor and costs soar due to the required process, but also when applying anti-corrosion coating to the inner surface, it is difficult for the paint to get into gaps such as the seams of the tank, making it more likely to cause coating defects. Ta.

<Problems to be solved by the invention> In view of the various inconveniences that arise when the mounting position of the fuel tank is restricted, the main purpose of the invention is to provide a fuel tank mounting structure that is easy to assemble. It's about doing.

<Means for Solving the Problems> According to the present invention, this purpose is to provide a structure in which an auxiliary fuel tank for storing starting fuel in a dual fuel engine is attached to the engine. An auxiliary fuel tank is provided between the upper end of the first bracket, the lower end of which is sandwiched between the fuel tank and the air cleaner, and the second bracket, which is fixed to the side of the main fuel tank that stores the main fuel. This is achieved by providing a fuel tank mounting structure characterized in that it is sandwiched.

In particular, it is preferable to provide an access hole for the control lever in the middle part of the first bracket.

<Operation> In this way, the auxiliary fuel tank, which is separate from the main fuel tank, can be fixed at a proper position in the engine with high rigidity without providing a special boss or the like on the engine body.

<Embodiments> Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a side view showing the entire general-purpose engine to which the present invention is applied. A main fuel tank 2 is attached to the upper side of the engine body 1 to store kerosene, etc., which is the main fuel for normal operation.
An air cleaner 5 is attached to the outer end of a carburetor 4 connected to the side surface of the engine body 1.

On the right side of the main fuel tank 2 in FIG. 1 and above the carburetor 4 and air cleaner 5, an auxiliary fuel tank 3 is installed to store gasoline as starting fuel.

FIG. 2 shows a first bracket 6 for mounting the auxiliary fuel tank 3, and the first bracket 6 has a lower end 6b to be sandwiched between the carburetor 4 and the air cleaner 5, and a lower end 6b. The lower end portion 6 is bent outward toward the engine body 1 from the portion 6b.
b and an upper end portion 6a that is substantially parallel to the upper end portion 6a. Furthermore, in order to increase the bending rigidity of the first bracket 6, ribs 19 are curved around the outer circumference thereof.

A bolt hole 13 is provided in the lower end portion 6b for inserting a bolt for fixing the air cleaner 5 to the outer flange surface of the carburetor 4 while holding the first bracket 6 therebetween.
A hole 14 having a shape matching and corresponding to the cross-sectional shape of the intake passage of the carburetor 4 is bored, and an access hole 12 is provided above the hole 14 so that the control lever 11 of the carburetor 4 can be accessed from the outside. is drilled. A through bolt 10 (described later) is attached to the upper end 6a.
A bolt hole 18 is drilled through which the bolt hole 18 is inserted.

A second bracket 7 is fixed to the side of the main fuel tank 2, and a through bolt 10 is fixed to the second bracket 7 laterally by welding.
As shown in FIG. 1, this through bolt 10 is attached to the vibration isolating rubber 8, the center hole 15 of the toroidal-shaped auxiliary fuel tank 3, the vibration isolating rubber 9, and the upper end 6a of the first bracket 6. The through bolts 10 are inserted in this order, and the through bolts 10 are fastened with nuts 17 to firmly support the auxiliary fuel tank 3. A collar 16 is fitted to the through bolt 10, and by determining the degree of compression of the vibration isolating rubbers 8 and 9, the auxiliary fuel tank 3 is supported in a vibration-proof manner.

According to such a mounting structure, the auxiliary tank 3 can be held between the first bracket 6 and the second bracket 7 via the anti-vibration rubbers 8 and 9, so that the auxiliary tank 3 can be firmly mounted and is suitable for It is possible to obtain excellent anti-vibration characteristics.

<Effects> As described above, according to the present invention, the auxiliary tank can be mounted sufficiently firmly with the required vibration isolation characteristics, and the assembly process is extremely simplified.
Furthermore, the lower end of the first bracket 6 can be held between the carburetor 4 and the air cleaner 5, and there is no need to separately fix the first bracket 6 to the engine body, so the fuel tank mounting structure can be simplified. It is possible to reduce the manufacturing cost.

Furthermore, since the attachment points of the first bracket 6 and the second bracket 7 can be sufficiently separated from each other, the rigidity of the fuel tank attachment structure against the force that tends to tilt the auxiliary fuel tank 3 with respect to the engine body 1 is increased. be able to.

[Brief explanation of drawings]

FIG. 1 is a front view showing the entirety of a general-purpose engine to which a fuel tank mounting structure based on the present invention is applied. FIG. 2 is an enlarged perspective view of the bracket used in the mounting structure of FIG. 1. 1...Engine body, 2...Main fuel tank, 3...Auxiliary fuel tank, 4...Carburetor, 5...
...Air cleaner, 6...First bracket, 6a...
...Top end, 6b...Lower end, 7...Second bracket, 8, 9...Vibration isolating rubber, 10...Through bolt,
11... Control lever, 12... Access hole, 13... Bolt hole, 14... Hole, 15... Center hole, 16... Collar, 17... Nut, 18...
...Bolt hole, 19...rib.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A structure in which an auxiliary fuel tank for storing starting fuel in a dual-fuel engine is attached to the engine, the lower end of which is located between the carburetor and the air cleaner. The auxiliary fuel tank is sandwiched between the upper end of the sandwiched first bracket and the second bracket fixed to the side of the main fuel tank for storing the main fuel. A fuel tank mounting structure featuring: (2) The fuel tank mounting structure according to claim 1, wherein an access hole for a control lever is formed in the middle part of the first bracket.