CN215890270U - Fuel injection structure of fuel pump - Google Patents
Fuel injection structure of fuel pump Download PDFInfo
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- CN215890270U CN215890270U CN202122376157.2U CN202122376157U CN215890270U CN 215890270 U CN215890270 U CN 215890270U CN 202122376157 U CN202122376157 U CN 202122376157U CN 215890270 U CN215890270 U CN 215890270U
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- oil
- oil return
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- valve
- fuel
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Abstract
The utility model discloses a fuel injection structure of a fuel pump, which comprises a seat body, wherein one side of the seat body is provided with an oil inlet pipe joint and an oil injection pipeline, the other side of the seat body is provided with a first oil return channel and a second oil return channel, the oil inlet pipe joint and the oil injection pipeline are in direct connection arrangement, the first oil return channel and the second oil return channel are in direct connection arrangement, a pressure relief channel of a bypass is arranged at an interval between the oil inlet pipe joint and the oil injection pipeline, and the other end of the pressure relief channel is communicated with an interval position between the first oil return channel and the second oil return channel and is provided with a pressure relief valve assembly. The technical effect of ingenious and reliable structure is realized, and the normal operation of the fuel pump is ensured.
Description
Technical Field
The utility model relates to a component in an automobile oil supply system, in particular to a fuel injection structure of a fuel pump.
Background
The fuel pump is used for feeding a fuel pump in a fuel tank into an engine, but the pressure of the fuel pumped by the fuel pump is usually large and generally exceeds the rated pressure of the engine, so that the fuel burns too fast, the fuel consumption is increased, and even the fuel overflows from a carburetor, oil leakage is caused, and potential safety hazards are brought.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, an object of the present invention is to provide a fuel injection structure of a fuel pump with a smart and reliable structure.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a fuel injection structure of fuel pump, includes the pedestal, one side of pedestal is equipped with oil feed pipe joint and spouts the oil pipe way, the opposite side of pedestal is equipped with first oil return passageway and second oil return passageway, and oil feed pipe joint and spout the oil pipe way and be direct setting, and first oil return passageway and second oil return passageway are direct setting, and the interval between oil feed pipe joint and the spout oil pipe way is provided with the pressure release passageway of bypass, and this pressure release passageway's other end intercommunication is in first oil return passageway with the interval position between the second oil return leads to and disposes the pressure release valve subassembly.
The pressure release valve assembly comprises a sealing ring arranged on the pressure release channel and a valve block capable of being abutted to the sealing ring in a sealing mode, a valve seat is arranged on the valve block, a movable T-shaped valve rod is inserted into the valve seat in a plugging mode, a spring is arranged between the T-shaped valve rod and the outer wall of the valve seat, the valve block is connected onto the end face of the T-shaped valve rod, and the bottom of the valve seat is mounted on a direct port of the pressure release channel in a sealing mode.
The T-shaped valve rod comprises a limiting rod and a pushing plate, the end portion of the limiting rod is connected to the pushing plate, the pushing plate is connected with the valve block, a guide hole is formed in the valve seat and used for the valve rod to penetrate and move, a limiting ring with the outer diameter larger than the inner diameter of the guide hole is arranged at the end portion of the limiting rod, a telescopic groove is formed in the middle shaft position of the limiting ring, a limiting groove for the limiting rod to move is formed in the valve seat, and the limiting ring penetrates through the guide hole into the limiting groove after being compressed along the telescopic groove.
And a buffer clapboard is erected at the inlet of the first oil return channel.
According to the structure, the fuel output of the pump core is connected with the oil inlet pipe joint and then is sprayed out of the oil injection pipeline, after the fuel pressure reaches the rated working pressure of an engine, the fuel pressure overcomes the spring elasticity of the pressure relief valve component to jack the valve plate, the fuel is relieved through the pressure relief channel and then is output from the first oil return channel and the second oil return channel, the fuel directly flows back to the auxiliary oil tank through the first oil return channel, the fuel can form siphon after passing through the siphon structure through the second oil return channel, the fuel in the oil tank is supplemented into the auxiliary oil tank, and therefore the technical effect of ingenious and reliable structure is achieved, and the normal operation of the fuel pump is guaranteed.
The utility model is further described with reference to the following figures and detailed description.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is an enlarged view of a in fig. 1.
Detailed Description
The following examples are given to illustrate the present invention and should not be construed as limiting the scope of the present invention.
As shown in fig. 1 and fig. 2, the embodiment discloses a fuel injection structure of a fuel pump, which is connected with a pump core of the fuel pump, and includes a base 1, an oil inlet pipe joint 2 and an oil injection pipe 3 are arranged on one side of the base 1, a first oil return passage 4 and a second oil return passage 5 are arranged on the other side of the base 1, the oil inlet pipe joint 2 and the oil injection pipe 3 are directly arranged, the first oil return passage 4 and the second oil return passage 5 are directly arranged, a pressure relief passage 6 for bypassing is arranged at an interval between the oil inlet pipe joint 2 and the oil injection pipe 3, and the other end of the pressure relief passage 6 is communicated with an interval between the first oil return passage 4 and the second oil return passage and is provided with a pressure relief valve assembly 7.
The pressure relief valve assembly 7 comprises a sealing ring 71 arranged on the pressure relief channel 6 and a valve plate 72 capable of abutting against the sealing ring 71, a valve seat 73 is arranged corresponding to the valve plate 72, a movable T-shaped valve rod 74 is inserted into the valve seat 73, a spring 75 is arranged between the outer wall of the T-shaped valve rod 74 and the outer wall of the valve seat 73, the valve plate 72 is connected to the end face of the T-shaped valve rod 74, and the bottom of the valve seat 73 is hermetically arranged on a through port of the pressure relief channel 6. By the structure, the valve plate is pushed open after the pressure of the fuel exceeds the elastic force of the spring 75, so that the pressure relief channel is opened, the pressure of the fuel is reduced, and the fuel meets the fuel conveying pressure required by an engine.
The T-shaped valve rod 74 comprises a limiting rod 741 and a pushing plate 742, the end of the limiting rod 741 is connected to the pushing plate 742, the pushing plate 742 is connected with the valve plate 72, a guide hole 731 for the valve rod to penetrate and move is arranged on the valve seat 73, a limiting ring 743 with an outer diameter larger than the inner diameter of the guide hole 731 is arranged at the end of the limiting rod 741, a telescopic groove 744 is arranged at the middle shaft position of the limiting ring 743, a limiting groove 732 for the limiting rod 741 to move is arranged on the valve seat 73, and the limiting ring 743 penetrates through the guide hole 731 to enter the limiting groove 732 after being compressed along the telescopic groove 744. The T-shaped valve rod 74 is more stable and reliable in installation and operation through the structure.
A buffer baffle plate 8 is arranged at the inlet of the first oil return channel 4. The fuel is more evenly output to the auxiliary fuel tank through the buffer partition plate.
By adopting the technical scheme, after the fuel output of the pump core is connected with the oil inlet pipe connector 2, the fuel is sprayed out of the oil injection pipeline 3, after the fuel pressure reaches the rated working pressure of the engine, the fuel pressure can overcome the elastic force of the spring 75 in the pressure release valve component 7 to jack the valve block 72, the fuel is decompressed through the pressure release channel 6 and then is output from the first oil return channel 4 and the second oil return channel 5, the fuel directly flows back to the auxiliary oil tank through the first oil return channel 4, the fuel can form siphon after passing through the siphon structure through the second oil return channel 5, the fuel in the oil tank is supplemented into the auxiliary oil tank, the technical effect of ingenious and reliable structure is realized, and the normal operation of the fuel pump is ensured.
Claims (4)
1. The utility model provides a fuel injection structure of fuel pump, includes the pedestal, its characterized in that: the oil injection structure is characterized in that an oil inlet pipe joint and an oil injection pipeline are arranged on one side of the seat body, a first oil return channel and a second oil return channel are arranged on the other side of the seat body, the oil inlet pipe joint and the oil injection pipeline are arranged in a straight-through mode, the first oil return channel and the second oil return channel are arranged in a straight-through mode, a pressure relief channel of a bypass is arranged at the interval between the oil inlet pipe joint and the oil injection pipeline, and the other end of the pressure relief channel is communicated with the interval between the first oil return channel and the second oil return channel and is provided with a pressure relief valve assembly.
2. The fuel injection structure of a fuel pump according to claim 1, characterized in that: the pressure release valve assembly comprises a sealing ring arranged on the pressure release channel and a valve block capable of being abutted to the sealing ring in a sealing mode, a valve seat is arranged on the valve block, a movable T-shaped valve rod is inserted into the valve seat in a plugging mode, a spring is arranged between the T-shaped valve rod and the outer wall of the valve seat, the valve block is connected onto the end face of the T-shaped valve rod, and the bottom of the valve seat is mounted on a direct port of the pressure release channel in a sealing mode.
3. The fuel injection structure of a fuel pump according to claim 2, characterized in that: the T-shaped valve rod comprises a limiting rod and a pushing plate, the end portion of the limiting rod is connected to the pushing plate, the pushing plate is connected with the valve block, a guide hole is formed in the valve seat and used for the valve rod to penetrate and move, a limiting ring with the outer diameter larger than the inner diameter of the guide hole is arranged at the end portion of the limiting rod, a telescopic groove is formed in the middle shaft position of the limiting ring, a limiting groove for the limiting rod to move is formed in the valve seat, and the limiting ring penetrates through the guide hole into the limiting groove after being compressed along the telescopic groove.
4. The fuel injection structure of a fuel pump according to claim 1, characterized in that: and a buffer clapboard is erected at the inlet of the first oil return channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122376157.2U CN215890270U (en) | 2021-09-29 | 2021-09-29 | Fuel injection structure of fuel pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122376157.2U CN215890270U (en) | 2021-09-29 | 2021-09-29 | Fuel injection structure of fuel pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215890270U true CN215890270U (en) | 2022-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122376157.2U Active CN215890270U (en) | 2021-09-29 | 2021-09-29 | Fuel injection structure of fuel pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN215890270U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114607542A (en) * | 2022-03-14 | 2022-06-10 | 一汽解放汽车有限公司 | Fuel supply system |
-
2021
- 2021-09-29 CN CN202122376157.2U patent/CN215890270U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114607542A (en) * | 2022-03-14 | 2022-06-10 | 一汽解放汽车有限公司 | Fuel supply system |
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