Motorcycle engine and fuel distribution device

Abstract

The present invention provides a fuel distribution device, which supplies fuel to two fuel injectors through an intermediate pipeline via a first fuel injector cap and a second fuel injector cap. The intermediate pipeline is connected to the first fuel injector cap and the second fuel injector cap by plug-in, and the misalignment angle of the first fuel injector cap and the second fuel injector cap can be adjusted by rotation, and the distance between the first fuel injector cap and the second fuel injector cap can also be adjusted, thereby solving the problem of high installation difficulty caused by the installation position error of the fuel injector. At the same time, an annular groove is provided on the outer ring of the intermediate pipeline, and an annular sealing structure is arranged in the annular groove. The sealing position of the annular sealing structure is adjusted by the annular groove to ensure the sealing performance of the intermediate pipeline and the first fuel injector cap and the second fuel injector cap. The present invention also provides a motorcycle engine.

Description

Technical Field

[0001] The present invention relates to the technical field of motorcycles, and more particularly to a motorcycle engine and a fuel distribution device. Background Art

[0002] The engine of a motorcycle can be divided into a two-stroke engine and a four-stroke engine. When the engine is working, fuel is supplied through the fuel pipeline, and the fuel is injected into different combustion chambers by the fuel distribution pipe.

[0003] In the engine combustion chamber of a motorcycle, in a two-stroke engine or a four-stroke engine, the fuel pipeline supplies fuel to two adjacent combustion chambers at the same time, and the fuel distribution pipe delivers the fuel into different combustion chambers. The two fuel distribution pipes supply fuel to the two adjacent combustion chambers respectively. In the prior art, the two fuel distribution pipes are arranged in a V shape, and the two are fixedly installed with the fuel injector at the outer end of the combustion chamber to supply fuel. Due to the offset of the fuel injector installation position or the dimensional deviation during the manufacturing process of the fuel injector installation port, the V-shaped fuel distribution pipe is difficult to be installed and positioned with the fuel injector during the installation process, making the installation of the fuel distribution pipe difficult.

[0004] Therefore, how to reduce the difficulty of installing the fuel distribution pipe is a problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] In view of this, the present invention provides a fuel distribution device to reduce the difficulty of installing a fuel distribution pipe; the present invention also provides a motorcycle engine.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A fuel distribution device comprises a first fuel injector cap and a second fuel injector cap which are staggered in fuel supply direction, and an intermediate pipeline connecting the fuel channels in the first fuel injector cap and the second fuel injector cap;

[0008] The first fuel injector cap and the second fuel injector cap are provided with pipe joints coaxially arranged with the fuel passages therein, and the intermediate pipe is inserted into the pipe joints;

[0009] It also includes an annular sealing structure arranged around the intermediate pipeline and the pipeline joint, and the outer ring of the intermediate pipeline is provided with an annular groove for accommodating the annular sealing structure.

[0010] Preferably, in the above-mentioned fuel distribution device, the annular sealing structure includes a first fuel sealing ring and a second dustproof sealing ring which are sequentially arranged inwardly from the end of the intermediate pipeline.

[0011] Preferably, in the above-mentioned fuel distribution device, the first fuel sealing ring is an O-ring made of rubber material.

[0012] Preferably, in the above-mentioned fuel distribution device, the second dustproof sealing ring includes an inner ring assembly ring and an outer ring sealing ring attached to the inner ring of the pipeline joint, which are arranged in sequence from the inside to the outside along its radial direction and clamped on the intermediate pipeline.

[0013] Preferably, in the above-mentioned fuel distribution device, the inner ring assembly ring is an inner ring assembly ring made of metal material; and the outer ring sealing ring is an outer ring sealing ring made of rubber material.

[0014] Preferably, in the above-mentioned fuel distribution device, the intermediate pipeline includes a connecting pipe and joint pipelines provided at both ends of the connecting pipe, and the annular groove is provided between the joint pipeline and the connecting pipe.

[0015] Preferably, in the above-mentioned fuel distribution device, a threaded hole communicating with the intermediate oil path therein is formed at the end of the connecting pipe, and a threaded column threadedly locked with the threaded hole extends from the joint pipeline.

[0016] Preferably, in the above-mentioned fuel distribution device, the annular groove is opened on the outer ring of the joint pipe.

[0017] Preferably, in the above fuel distribution device, a position adjustment gap is reserved between the first fuel injector cap, the second fuel injector cap and the intermediate pipeline for axially adjusting the distance between the two.

[0018] A motorcycle engine is provided with a first combustion chamber and a second combustion chamber arranged in a V-shaped staggered manner, and a first fuel injector fixedly mounted on the first combustion chamber, and a second fuel injector fixedly mounted on the second combustion chamber, and a fuel distribution device connected to a fuel pipeline and distributing fuel is mounted on the first fuel injector and the second fuel injector, and the fuel distribution device is the fuel distribution device described in any one of the above.

[0019] The fuel distribution device provided by the present invention comprises a first fuel injector cap and a second fuel injector cap arranged in a staggered manner in the fuel supply direction, and an intermediate pipeline connecting the fuel channels in the first fuel injector cap and the second fuel injector cap; a pipeline joint arranged coaxially with the fuel channels in the first fuel injector cap and the second fuel injector cap is provided on the first fuel injector cap and the second fuel injector cap, and the intermediate pipeline is inserted in the pipeline joint; and also comprises an annular sealing structure arranged around the intermediate pipeline and the pipeline joint, and an annular groove for accommodating the annular sealing structure is provided on the outer ring of the intermediate pipeline. The first fuel injector cap and the second fuel injector cap are arranged in a staggered manner to meet the connection requirements of the two fuel injectors arranged in a V-shaped manner in a motorcycle engine, and the two are connected by the intermediate pipeline, and the fuel introduced by the fuel pipeline enters the two fuel injectors respectively through the first fuel injector cap and the second fuel injector cap from the intermediate pipeline to realize the fuel supply to the valve. The intermediate pipeline is connected to the first injector cap and the second injector cap by plug-in. The first injector cap and the second injector cap are provided with pipeline joints. The intermediate pipeline is plugged into the connecting structure of the pipeline joint. The misalignment angle of the first injector cap and the second injector cap can be rotated and adjusted. According to the different insertion depths, the spacing between the first injector cap and the second injector cap can also be adjusted, thereby solving the problem of high difficulty in installing the first injector cap and the second injector cap due to the installation position error of the injector.

[0020] At the same time, in order to avoid the sealing of the intermediate pipeline insertion structure being affected by the angle or spacing adjustment between the first injector cap and the second injector cap and the intermediate pipeline, an annular groove is opened on the outer ring of the intermediate pipeline, and the annular sealing structure is arranged in the annular groove. The sealing position of the annular sealing structure is adjusted by the annular groove to ensure the sealing performance of the intermediate pipeline and the first injector cap and the second injector cap. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of the layout structure of the fuel distribution device provided by the present invention;

[0023] Figure 2 for Figure 1 A cross-sectional view of the fuel distribution device;

[0024] Figure 3 for Figure 2 Structural cross-sectional view of the middle pipeline;

[0025] Figure 4 for Figure 2Schematic diagram of the structure of the second dustproof sealing ring. DETAILED DESCRIPTION

[0026] The invention discloses a fuel distribution device, which reduces the difficulty of installing a fuel distribution pipe; the invention also provides a motorcycle engine.

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] like Figure 1-Figure 4 As shown, Figure 1 A schematic diagram of the layout structure of the fuel distribution device provided by the present invention; Figure 2 for Figure 1 A cross-sectional view of the fuel distribution device; Figure 3 for Figure 2 Structural cross-sectional view of the middle pipeline; Figure 4 for Figure 2 Schematic diagram of the structure of the second dustproof sealing ring.

[0029] The present invention provides a fuel distribution device, comprising a first fuel injector cap 1 and a second fuel injector cap 2 arranged in a staggered manner in the fuel supply direction, and an intermediate pipeline 3 connecting the fuel channels in the first fuel injector cap 1 and the second fuel injector cap 2; a pipeline joint 10 arranged coaxially with the fuel channels in the first fuel injector cap 1 and the second fuel injector cap 2 is provided on the first fuel injector cap 1 and the second fuel injector cap 2, and the intermediate pipeline 3 is inserted into the pipeline joint 10; and an annular sealing structure arranged around the intermediate pipeline 3 and the pipeline joint 10 is also provided, and an annular groove 31 for accommodating the annular sealing structure is provided on the outer ring of the intermediate pipeline 3. The first fuel injector cap 1 and the second fuel injector cap 2 are staggered to meet the connection requirements of the two fuel injectors (5, 6) arranged in a V-shaped manner in a motorcycle engine, and the two are connected by the intermediate pipeline 3, and the fuel introduced by the fuel pipeline 11 enters the two fuel injectors (5, 6) respectively through the intermediate pipeline 3 through the first fuel injector cap 1 and the second fuel injector cap 2, so as to realize the fuel supply to the valve 4. The intermediate pipeline 3 is connected to the first fuel injector cap 1 and the second fuel injector cap 2 by plug-in. The first fuel injector cap 1 and the second fuel injector cap 2 are provided with a pipeline joint 10. The pipeline joint 10 is an oil hole opened on the first fuel injector cap 1 and the second fuel injector cap 2 and communicated with the internal oil circuit thereof. The inner diameter of the oil hole is matched with the outer diameter of the intermediate pipeline 3. The intermediate pipeline 3 is inserted into the connection structure of the pipeline joint 10, and is sleeved on the intermediate pipeline through an annular sealing structure, so that the two form an adjustment shaft 7 structure between the first fuel injector cap 1 and the second fuel injector cap 2. The misalignment angle of the first fuel injector cap 1 and the second fuel injector cap 2 can be rotated and adjusted. According to the different insertion depths, the spacing between the first fuel injector cap 1 and the second fuel injector cap 2 can also be adjusted, thereby solving the problem of high difficulty in installing the first fuel injector cap and the second fuel injector cap due to the installation position error of the fuel injector.

[0030] At the same time, in order to avoid the sealing of the intermediate pipeline 3 plug-in structure being affected by the angle or spacing adjustment between the first injector cap 1 and the second injector cap 2 and the intermediate pipeline 3, an annular groove 31 is provided on the outer ring of the intermediate pipeline 3, and the annular sealing structure is arranged in the annular groove 31. The sealing position of the annular sealing structure is adjusted by the annular groove 31 to ensure the sealing performance of the intermediate pipeline 3 and the first injector cap 1 and the second injector cap 2.

[0031] In a specific embodiment of the present case, the annular sealing structure includes a first fuel seal ring 8 and a second dustproof seal ring 9 arranged in sequence from the end of the intermediate pipeline 3 to the inside. The first injector cap 1 and the second injector cap 2 are connected to the intermediate pipeline 3 by plug-in connection. Affected by the working environment of the motorcycle engine, impurities from the external environment are easily gathered at the plug-in position of the intermediate pipeline 3 and the pipeline joint 10. In order to prevent impurities from entering the fuel, the annular sealing structure is provided to include a first fuel seal ring 8 and a second dustproof seal ring 9. The first fuel seal ring 8 is located on the inner side of the pipeline joint 10, and is used to seal the fuel to prevent the fuel from leaking from the intermediate pipeline 3 and the pipeline joint 10. The second dustproof seal ring 9 is located on the outer side of the plug-in end of the intermediate pipeline 3 and the pipeline joint 10, and is used to isolate external impurities to prevent external impurities from entering the gap between the intermediate pipeline 3 and the pipeline joint 10 and contaminating the fuel. The arrangement structure of the two seal rings realizes the sealing of the fuel passage and the isolation of the external environment.

[0032] In a specific embodiment of the present case, the first fuel sealing ring 8 is an O-ring made of rubber.

[0033] In a specific embodiment of the present case, the second dustproof sealing ring 9 includes an inner ring assembly ring 91 and an outer ring sealing ring 92 attached to the inner ring of the pipe joint 10, which are arranged in sequence from the inside to the outside along its radial direction and clamped on the intermediate pipeline.

[0034] The first fuel seal ring 8 is an O-ring, which is pressed between the intermediate pipeline 3 and the pipeline joint 10 to seal the gap between the two and prevent fuel leakage. The second dustproof seal ring 9 is a combination structure of two rings of seals in the radial direction. The second dustproof seal ring 9 includes an outer ring seal ring 92 and an inner ring assembly ring 91. The inner ring assembly ring 91 is clamped and matched with the annular groove 31 of the intermediate pipeline 3 to ensure the stability of its assembly structure with the intermediate pipeline 3. The inner ring assembly ring 91 can be made of hard material to reduce its preparation difficulty. The outer ring seal ring 92 is made of flexible material, and the outer ring seal ring 92 fits the inner wall of the pipeline joint 10 to meet the isolation requirements of external dust.

[0035] In a specific embodiment of the present case, the inner ring assembly ring 91 is an inner ring assembly ring made of metal; the outer ring sealing ring 92 is an outer ring sealing ring made of rubber. The inner ring assembly ring 91 is made of metal, which is easy to process and can reduce the difficulty of fitting with the annular groove 31 of the intermediate pipeline 3. The outer ring is made of rubber, which increases its sealing performance.

[0036] In a specific embodiment of the present case, the intermediate pipeline 3 includes a connecting pipe 32 and joint pipelines (33, 34) arranged at both ends of the connecting pipe 32. Taking the structure of the joint pipeline 33 and the connecting pipe 32 as an example, the annular groove 31 is opened between the joint pipeline 33 and the connecting pipe 32. The end of the intermediate pipeline 3 is provided with an annular groove 31, and the first fuel sealing ring 8 and the second dustproof sealing ring 9 are sleeved on the annular groove 31. The annular groove 31 is used to limit the two, so as to ensure the consistency of the sealing structure of the intermediate pipeline 3 and the pipeline joint 10.

[0037] Considering that the structure of the annular groove 31 makes it difficult to install the first fuel sealing ring 8 and the second dustproof sealing ring 9, the intermediate pipeline 3 is divided into two sections consisting of a connecting pipe 32 and a joint pipeline 33 at the position of the annular groove 31. The joint pipeline 33 includes two sections located at both ends of the connecting pipe 32. The intermediate pipeline 3 is divided into three parts consisting of a connecting pipe 32 and a joint pipeline (33, 34). The annular groove 31 is located at the connecting position of the connecting pipe 32 and the joint pipeline 33. After the first fuel sealing ring 8 and the second dustproof sealing ring 9 are mounted on the annular groove 31, the connecting pipe 32 is connected to the joint pipeline 33, thereby reducing the difficulty of installation.

[0038] In a specific embodiment of the present case, a threaded hole connected to the middle oil path in the connecting pipe 32 is provided at the end thereof, and a threaded column that is threadedly locked with the threaded hole extends from the joint pipe 33. The connection method of the connecting pipe 32 and the joint pipe 33 is to adopt a threaded connection method of a threaded hole and a threaded column, the threaded column is provided at the end of the joint pipe, the threaded hole is provided at the end of the connecting pipe, and a coaxially arranged middle oil hole is provided in the middle of the two.

[0039] Of course, the joint pipeline 33 and the connecting pipe 32 can also be connected by interference fit. A connecting column extends from the joint pipeline, and a coaxially arranged connecting hole is provided on the connecting pipe. The assembly of the intermediate pipeline is achieved through the interference fit between the connecting column and the connecting hole.

[0040] Preferably, the annular groove 31 is formed on the outer ring of the joint pipe 33. The annular groove 31 is formed on the joint pipe 33, and after the first fuel seal ring 8 and the second dust seal ring 9 are sleeved on the joint pipe 33, the joint pipe 33 is connected to the connecting pipe 32. Since the end structure of the intermediate pipe 3 is relatively compact, the annular groove 31 is formed on the joint pipe 33 to increase its connection length and reduce the difficulty of processing.

[0041] In a specific embodiment of the present case, a position adjustment gap 12 is reserved between the first fuel injector cap 1, the second fuel injector cap 2 and the intermediate pipeline 3 for axial adjustment of the distance between the two. Between the two combustion chambers of the motorcycle engine arranged in a V shape, the mounting holes of the fuel injectors will have a V-shaped misalignment angle and an error in the distance between the two fuel injectors due to manufacturing errors. The V-shaped misalignment angle can be adjusted by twisting the first fuel injector cap 1 and the second fuel injector cap 2 relative to each other, and the error in the distance between the two requires adjusting the first fuel injector cap 1 and the second fuel injector cap 2 to move away from or closer to each other. By reserving a position adjustment gap 12 between the first fuel injector cap 1 and the intermediate pipeline 3, and between the second fuel injector cap 2 and the intermediate pipeline 3, it is easy to adjust the distance between the two, and further reduce the difficulty of installing the first fuel injector cap and the second fuel injector cap.

[0042] Based on the fuel distribution device provided in the above embodiment, the present invention also provides a motorcycle engine, which is provided with a first combustion chamber and a second combustion chamber arranged in a V-shaped staggered manner, and a first fuel injector fixedly mounted on the first combustion chamber, and a second fuel injector fixedly mounted on the second combustion chamber. The first fuel injector and the second fuel injector are provided with a fuel distribution device which is connected to a fuel pipeline and distributes fuel. The fuel distribution device provided on the motorcycle engine is the fuel distribution device provided in the above embodiment.

[0043] Since the motorcycle engine adopts the fuel distribution device of the above embodiment, please refer to the above embodiment for the beneficial effects brought by the fuel distribution device of the motorcycle engine.

[0044] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fuel dispensing device, characterized in that: It comprises a first fuel injector cap and a second fuel injector cap which are staggered in the fuel supply direction, and an intermediate pipeline which connects the fuel channels in the first fuel injector cap and the second fuel injector cap; The first fuel injector cap and the second fuel injector cap are provided with pipe joints coaxially arranged with the fuel passages therein, and the intermediate pipe is inserted into the pipe joints; It also includes an annular sealing structure disposed around the intermediate pipeline and the pipeline joint, and an annular groove for accommodating the annular sealing structure is formed on the outer ring of the intermediate pipeline; The intermediate pipeline includes a connecting pipe and joint pipelines arranged at both ends of the connecting pipe, and the connecting pipe and the joint pipeline are threadedly matched or interference-fitted. The annular groove is opened between the joint pipeline and the connecting pipe, and the annular sealing structure is sleeved and installed on the annular groove.

2. The fuel dispensing device according to claim 1, characterized in that: The annular sealing structure includes a first fuel sealing ring and a second dust sealing ring which are sequentially arranged inwardly from the end of the intermediate pipeline.

3. The fuel dispensing device according to claim 2, characterized in that: The first fuel sealing ring is an O-ring made of rubber.

4. The fuel dispensing device according to claim 2, characterized in that: The second dustproof sealing ring comprises an inner ring assembly ring and an outer ring sealing ring attached to the inner ring of the pipeline joint, which are sequentially arranged from the inside to the outside along the radial direction and clamped on the intermediate pipeline.

5. The fuel dispensing device according to claim 4, characterized in that: The inner ring assembly ring is an inner ring assembly ring made of metal material; the outer ring sealing ring is an outer ring sealing ring made of rubber material.

6. The fuel dispensing device according to claim 1, characterized in that: The end of the connecting pipe is provided with a threaded hole connected with the middle oil path therein, and a threaded column extending from the joint pipeline is threadedly locked with the threaded hole.

7. The fuel dispensing device according to claim 1, characterized in that: The annular groove is arranged on the outer ring of the joint pipe.

8. The fuel dispensing device according to claim 1, characterized in that: A position adjustment gap is reserved between the first fuel injector cap, the second fuel injector cap and the intermediate pipeline for axially adjusting the distance between the two.

9. A motorcycle engine, provided with a first combustion chamber and a second combustion chamber arranged in a V-shaped staggered manner, and a first fuel injector fixedly mounted on the first combustion chamber, and a second fuel injector fixedly mounted on the second combustion chamber, wherein a fuel distribution device connected to a fuel pipeline and distributing fuel is mounted on the first fuel injector and the second fuel injector, characterized in that: The fuel dispensing device is the fuel dispensing device according to any one of claims 1-8.

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