JPS6228682Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mounting device for a multiple carburetor in an engine, which has excellent heat insulation and vibration isolation properties.

Generally, when installing a multiple carburetor that integrates multiple carburetors into the engine body in a motorcycle engine, the fuel is To prevent percolation, etc. due to boiling of fuel, and to prevent vibrations from the engine body from being transmitted to the multiple carburetor as much as possible to reduce the vibration of the float in the float chamber and stabilize the fuel oil level in the float chamber. This is required.
Therefore, in the past, a mounting method was adopted in which a rubber insulator was interposed between each intake passage of the engine body and each mixture passage of the multiple carburetor, and they were fixed together with a tightening band or the like. However, with such conventional mounting means, when it is necessary to arrange the multiple carburetor as close as possible to the engine body (therefore, the intake passage and the mixture passage are close to each other), the insulator is If the length becomes too short, a sufficient vibration-proofing effect cannot be obtained.

In the case of a downdraft type carburetor, the insulator is also placed vertically, making it impossible to obtain the sufficient vibration damping effect that would be achieved if it were placed horizontally.

Since the insulator needs to support the weight of the carburetor, it must have a sufficiently large contact area with the intake passage and mixture passage, and the insulator must have a sufficiently large contact area with the intake passage and mixture passage. Heat is easily transferred to the vaporizer side.

Since the carburetor is a multiple type carburetor, a plurality of insulators are naturally required, and it takes a lot of time to independently tighten or loosen the insulators in each mixture passage of the multiple type carburetor using a tightening band. Maintenance is not easy as it requires a lot of effort and time.

There are other inconveniences.

The object of the present invention is to provide a mounting device for a multiple carburetor in an engine, which has a simple structure and can eliminate all of the above-mentioned disadvantages.

In order to achieve this object, the present invention provides an engine in which multiple carburetors are provided on one side of the engine body, and the intake passage of the engine body and the mixture passage of the carburetor are airtightly connected to each other. Both ends of the carburetor are attached to and detached from the engine body using a shock absorbing support device independent of the connection seal member so that the carburetor can be inserted and removed freely through a connection seal member that seals the engine body, and the two ends of the carburetor can be attached to and removed from the engine body so that the fitted state can be maintained. The entire weight of the carburetor is supported on the engine body through the buffer support device, and the buffer support device includes a pair of first stays fixed to both ends of the carburetor, and these first stays. a pair of second stays that are fixed to the engine body and are opposed to each other with the carburetor sandwiched therebetween;
It is characterized in that it is comprised of a stay and a pair of buffer support members that connect opposing ends of the first and second stays, respectively.

Hereinafter, one embodiment of the present invention will be explained with reference to the drawings.
When applied to a cycle engine, this engine has a V-shaped side as a whole, and has a first engine body _E1 and a second engine body, each consisting of a cylinder block 1, a cylinder head 2, and a crankcase 3.
a first engine body E ₂ , and a first engine body E ₁
is arranged in the horizontal direction, and the second engine main body E ₂ is arranged in the longitudinal direction, and a side V-shaped space 4 is formed between the engine main bodies E ₁ and E ₂ .

In the V-shaped space 4, the first engine main body
a vertically ventilated first multiple carburetor C ₁ for supplying an air-fuel mixture to E ₁ ; and a horizontally ventilated first multiple carburetor C 1 for supplying an air-fuel mixture to the second engine body E ₂ A second multiple carburetor C ₂ is arranged in parallel, and each multiple carburetor C ₁ , C ₂ is connected to the second multiple carburetor C 2 .
It is constructed by integrally connecting two carburetors that are parallel to each other within the character-shaped space 4.

A first multiple carburetor C ₁ is installed on the first engine main body E ₁ and a second multiple carburetor C ₂ is installed on the second engine main body E ₂ . I will explain about it. A pair of first stays 8, 8 are fixed to both ends of the first multiple carburetor _C1 by a plurality of bolts 9, and
A pair of second stays 6, 6 are fixed to the opposing carburetor mounting surfaces 5 of the engine body _E1 by a plurality of mounting bolts 7, corresponding to the first stays 8, 8, respectively. The second stays 6, 6 face each other with the first multiple carburetor _C1 in between. Also, the mounting surfaces 1 of the first and second stays 6 and 8 facing each other
0 is a cushioning support member 11 made of hexahedral rubber or the like.
Both sides of the two are bonded together by baking, gluing, etc., and the first multiple carburetor _C1 is connected to each pair of second carburetor C1.
Stay 6, buffer support member 11 and first stay 8
It is supported in a cushioning manner through. Thus, each pair of first and second stays 8, 6 and buffer support member 11,
A first buffer support device _D1 is configured to support both ends of the first multiple carburetor C1 on the first engine body _E1 , and the first multiple carburetor _C1 is connected to the first multiple carburetor _C1 via this device D1 _. The entire weight will be supported by the first engine body _E1 .

As shown in FIG. 2, a mounting flange 14 is fixed to the end face 13 of each intake passage 12 formed in the cylinder head 2 of the first engine body _E1 by means of mounting bolts 15. A connecting seal member 16 formed into a cylindrical shape made of rubber or the like and having a lip piece 17 on the cylindrical surface is bonded by baking or adhesive, and a first multiple carburetor C ₁ is connected to the open end of this connecting seal member 16 . The protruding end of each air-fuel mixture passage 18 is removably fitted,
The lip piece 17 is tightly attached to the outer periphery of this protruding end, thereby airtightly sealing the space between them. Thus, each mixture passage 18 of the first multiple carburetor _C1 is connected to the first
The air-fuel mixture with an appropriate air-fuel ratio is connected to each intake passage 12 of the engine main body E ₁ via a connecting seal member 16 so that the air-fuel mixture is generated in each carburetor that constitutes the first multiple carburetor C ₁ . , through the air-fuel mixture passage 18, the connecting seal member 16, and the intake passage 12, and are drawn into each combustion chamber of the first engine body _E1 . The connection seal member 16 is connected to the first buffer support device.
It is completely independent of D ₁ , and the first multiple carburetor C ₁
It does not support the weight of the air-fuel mixture in any way, but only serves to prevent the leakage of the air-fuel mixture and the suction of air. Therefore, the state of engagement between the protruding end of the air-fuel mixture passage 18 and the opening of the connecting seal member 16 is , the first multiple carburetor C ₁ is supported by the engine main body E ₁ in a double-sided manner via the first buffer support device D ₁ .

In addition, a plurality of mounting bolts 20 are attached to the opposite carburetor mounting surfaces of the first engine body _E1 .
The stay 21 is fixed, and the second multiple carburetor
A first stay 22 is also fixed to both end faces of C ₂ with a plurality of mounting bolts 23, and each stay 2
Both sides of the buffer support member 24, which is the same as the buffer support member 11, are baked on the opposing mounting surfaces of 1 and 22,
The second multiple carburetor C ₂ is also connected via a second buffer support device D ₂ consisting of a pair of buffer support members 24 and first and second stays 22 and 21. It is supported as a buffer. Although not shown, each air-fuel mixture passage of the second multiple carburetor C ₂ and each intake passage of the second engine body E ₂ are also hermetically sealed by the connecting seal member 16.

As described above, according to the present invention, the engine body
In an engine in which multiple carburetors C 1 and C ₂ are provided on one side of E ₁ and E ₂ , the intake passage 12 of the engine main bodies E ₁ and E ₂ and the mixture passage of the carburetors C _{1 and} C ₂ 18, through a connecting seal member 16 that airtightly seals between the passages 12 and 18, and the vaporizer is removably fitted so that the fitted state can be maintained.
Both ends of C ₁ and C ₂ are connected to the engine bodies E ₁ and E ₂ by a buffer support device independent from the connecting seal member 16.
The carburetors C ₁ and C ₂ are removably attached to the engine bodies E ₁ and E ₂ via the buffer support devices D ₁ and _{D 2 ,} and _their buffer support The devices D ₁ and D ₂ include a pair of first stays 8 and 2 fixed to both ends of the vaporizers C ₁ and C ₂ , respectively.
2, and a pair of second stays 6 which are fixed to the engine bodies E ₁ and E ₂ and are opposed to each other with the carburetors C ₁ and C ₂ in between, corresponding to the first stays 8 and 22, respectively. , 21, and a pair of buffer support members 11, 24 that connect the opposing ends of the first and second stays 8, 22; 6, 21, respectively, so that the engine main bodies E ₁ , E ₂ A connecting seal member 16 that simply airtightly connects each intake passage 12 and each mixture passage 18 of the carburetors C ₁ and C ₂ .
and the buffer support members 11 and 24, which support the entire weight of the carburetors C ₁ and C ₂ independently and in a cushioning manner, can be constructed from separate and independent parts. Support member 1
Nos. 1 and 24 have a large degree of freedom in design because they can be designed to the optimal shape and size to achieve the function of each member, regardless of the form of the vaporizer or the installation location. For example, the connection seal member 16, since it does not support the weight of the carburetors C ₁ and C ₂ ,
The contact area with the intake passage 12 and the mixture passage 18 can be made small, and the heat shielding effect between the two passages 12 and 18 is good, and the buffer support members 11 and 24
is large enough to provide sufficient vibration isolation function even when the carburetors C ₁ and C ₂ are placed close to the engine bodies E ₁ and E ₂ (therefore, both passages 12 and 18 are placed close to each other). It has the effect of being able to form. Also, due to the heat dissipation effects of the stays 8, 22; 6, 21 and the insulation effects of the buffer support members 11, ₂₄ , the carburetor _C1 is transferred from the engine main body _E1 , E2 via the buffer support devices _D1 , _D2 . , the amount of heat transferred to C ₂ can be extremely reduced. Furthermore, both the passages 12, 18
are merely removably fitted via the connecting seal member 16, and the entire weight of the carburetors _C1 , _C2 is supported by the engine bodies _E1 , _E2 exclusively by the buffer support devices _D1 , D. ₂ , even if the number of constituent carburetors of the multiple carburetors C ₁ and C ₂ is large, the operation of attaching and detaching them to the engine bodies E ₁ and E ₂ is performed via the carburetors C 1 and C ₂ . It is sufficient to connect only through the buffer support devices D ₁ and D ₂ at both ends of C ₂ , and the connection between each passage 12 and 18 is only a simple insertion and removal operation, so overall the assembly work of the multiple carburetor is extremely simple. It is simple and maintenance of the vaporizers C ₁ and C ₂ becomes easy. Furthermore, after the carburetor is assembled, both the passages 12, 1
8 is allowed to move in the vertical direction without deforming the connecting seal member 16, even if the engine bodies E ₁ , E ₂ and the carburetors C ₁ , C ₂ vibrate relative to each other in the same direction, The connection seal member 16 is not forcibly bent or stretched, which can contribute to improving the durability of the connection seal member 16. Furthermore, since the carburetors C ₁ and C ₂ can be stably supported on both sides of the engine bodies E ₁ and E ₂ via the buffer support devices D ₁ and D ₂ , the carburetors C ₁ and C ₂ , and the pair of second stays 6 and 21 facing each other with the carburetors C ₁ and C ₂ sandwiched in between are also used as protectors for the carburetors C ₁ and C ₂ . Then, the vaporizer C ₁ , C ₂
Both ends can be effectively protected from collision with other objects, and this is particularly effective in motorcycles and the like where the carburetor is installed in an exposed state.

[Brief explanation of the drawing]

Figure 1 is a side view of a part of a V-type multi-cylinder four-stroke engine equipped with the device of the present invention, Figure 2 is a partially cutaway view of the engine, and Figure 3 is a plan view taken along the line shown in Figure 1. be. C ₁ , C ₂ ... 1st and 2nd as multiple carburetor
Multiple carburetor, D ₁ , D ₂ ...first and second buffer support devices as buffer support devices, E ₁ , E ₂ ...first and second engine main bodies as engine main bodies, 8, 2
2...First stay, 6,21...Second stay, 1
1, 24...buffer support member, 12...intake passage,
16... Connection sealing member, 18... Mixture passage.

Claims (1)

[Scope of utility model registration request] Multiple carburetor on one side of engine body E ₁ , E ₂
In an engine equipped with C ₁ and C ₂ , the intake passage 12 of the engine bodies E ₁ and E ₂ and the carburetor
C ₁ and C ₂ mixture passages 18 and those passages 1
A connecting seal member 16 that airtightly seals between 2 and 18.
Both ends of the carburetors C ₁ and C ₂ are connected to the engine bodies E ₁ and E ₂ independently of the connecting seal member 16 so that they can be removably fitted together and maintained in the fitted state. The entire weight of _the carburetors C _{1 and} C ₂ is transferred to the engine body through the buffer support devices D ₁ and D ₂ .
Supported by E ₁ and E ₂ , and their buffer support devices D ₁ and D ₂
A pair of first stays 8, 22 are fixed to both ends of the carburetors _C1 , _C2, respectively, and a pair of first stays 8, 22 are fixed to the engine bodies _E1 , E2 in correspondence with these first stays 8, ₂₂ , respectively. and the vaporizers C ₁ and C ₂
a pair of second stays 6 facing each other with
21, and the first and second stays 8, 22; 6, 2
1. A mounting device for a multiple carburetor in an engine, comprising a pair of buffer support members 11 and 24, each of which connects opposing ends of a single carburetor.