CN210440140U - Fuel conveying mechanism and vehicle - Google Patents
Fuel conveying mechanism and vehicle Download PDFInfo
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- CN210440140U CN210440140U CN201921406167.2U CN201921406167U CN210440140U CN 210440140 U CN210440140 U CN 210440140U CN 201921406167 U CN201921406167 U CN 201921406167U CN 210440140 U CN210440140 U CN 210440140U
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Abstract
The utility model relates to a fuel delivery field provides a fuel delivery mechanism and vehicle, wherein, fuel delivery mechanism includes oil tank, sprayer, sets up oil cup, setting in the oil tank are in oil transfer pump in the oil cup, connect in the oil transfer pump with defeated oil pipe between the sprayer and connect in the sprayer extends to oil return line in the oil cup, the bottom of oil cup be provided with inlet port and the oil outlet of oil tank intercommunication, oil return line is located one end in the oil cup with the oil outlet keeps the interval, oil transfer pump is connected with the oil return power pipeline that extends to oil outlet department. Fuel conveying mechanism, connect in the oil return pipeline of sprayer no longer extend to the oil outlet department of oil cup in the oil tank, but keep the interval with the oil outlet to can avoid oil return pipeline's fuel wax precipitation and block up the oil outlet.
Description
Technical Field
The utility model relates to a technical field that the fuel was carried, in particular to fuel conveying mechanism and vehicle.
Background
The rationality of the design of a vehicle fuel system is particularly important for driving safety, fuel utilization and the like. In order to ensure that the engine normally supplies fuel, a certain fuel supply pressure is needed from the fuel tank to the oil inlet of the high-pressure oil pump. In order to maintain the oil supply pressure from the oil tank to the oil inlet of the high-pressure oil pump, a negative pressure system (a hand oil pump is arranged on the side of the fuel filter) or a positive pressure system (an electronic oil transfer pump is adopted) is generally designed in the middle. The low-pressure oil supply system of the negative pressure system has the advantages of low cost, but has the defects that the oil supply pressure entering the high-pressure oil pump cannot be effectively controlled, an oil return channel is blocked when the fuel is waxed, so that an oil return pipe of an oil sprayer and an oil seal of the high-pressure oil pump are separated, the positive pressure system can effectively control the oil supply pressure, and the blockage of the wax precipitation oil return channel of the fuel cannot be completely avoided.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a fuel conveying mechanism to solve the problem that the oil sprayer returns oil pipe way fuel wax deposition and blocks up the oil cup.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a fuel conveying mechanism comprises a fuel tank, a fuel injector, a fuel cup arranged in the fuel tank, a fuel delivery pump arranged in the fuel cup, a fuel delivery pipeline connected between the fuel delivery pump and the fuel injector, and a fuel return pipeline connected between the fuel delivery pump and the fuel injector and extending to the fuel cup, wherein an oil inlet and an oil outlet communicated with the fuel tank are formed in the bottom of the fuel cup, an interval is kept between one end of the fuel return pipeline located in the fuel cup and the oil outlet, and the fuel delivery pump is connected with a fuel return power pipeline extending to the oil outlet.
Furthermore, a pressure relief pipeline is connected to the part of the oil pipeline, which is positioned in the oil cup, in a side manner.
Furthermore, a check valve is arranged on the pressure relief pipeline.
Furthermore, the oil conveying pipeline is provided with a high-pressure oil pump positioned outside the oil tank.
Furthermore, a pressure relief branch is connected beside the high-pressure oil pump and connected to the oil return pipeline.
Furthermore, a high-pressure oil rail between the high-pressure oil pump and the oil injector is arranged on the oil conveying pipeline.
Furthermore, the oil conveying pipeline is provided with a filter which is positioned between the high-pressure oil pump and the oil conveying pump.
Further, the oil cup is connected to the top of the oil tank, and the bottom of the oil cup is adjacent to the bottom of the oil tank.
Further, an oil inlet is formed in the bottom of the oil transfer pump, and the oil inlet is close to the bottom of the oil cup.
Compared with the prior art, fuel conveying mechanism have following advantage:
fuel conveying mechanism, connect in the oil return pipeline of sprayer no longer extend to the oil outlet department of oil cup in the oil tank, but keep the interval with the oil outlet to can avoid oil return pipeline's fuel wax precipitation and block up the oil outlet.
Another object of the utility model is to provide a vehicle to solve the problem that the oil sprayer returns oil pipe way fuel wax deposition and blocks up the oil cup.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a vehicle, wherein the vehicle is provided with the fuel delivery mechanism set forth in the above aspect.
The vehicle and the fuel delivery mechanism have the same advantages compared with the prior art, and the detailed description is omitted.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic diagram of a fuel delivery mechanism according to an embodiment of the present invention.
Description of reference numerals:
1-high pressure oil rail, 2-oil injector, 3-high pressure oil pump, 4-filter, 5-oil tank, 6-oil cup, 7-oil delivery pump, 8-oil outlet, 9-oil inlet, 10-oil delivery pipeline, 11-oil return pipeline, 12-pressure relief branch, 13-pressure relief pipeline, 14-oil return power pipeline.
Detailed Description
In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail with reference to the accompanying drawings in conjunction with embodiments.
The utility model provides a fuel conveying mechanism, wherein, fuel conveying mechanism includes oil tank 5, sprayer 2, sets up oil cup 6, setting in the oil tank 5 are in oil transfer pump 7 in the oil cup 6, connect in oil transfer pump 7 with defeated oil pipe way 10 between the sprayer 2 and connect in sprayer 2 and extend to oil return line 11 in the oil cup 6, the bottom of oil cup 6 be provided with inlet port 9 and the oil outlet 8 of 5 intercommunications of oil tank, oil return line 11 is located one end in the oil cup 6 with oil outlet 8 keeps the interval, oil transfer pump 7 is connected with and extends to the oil return power line 14 of 8 departments of oil outlet.
The tank 5 is intended to store fuel, and the cup 6, which is substantially cup-shaped and is arranged in the tank 5, makes it possible to obtain fuel from the tank 5, in particular in the case of a low level in the tank 5, to create a higher level in the cup 6, which facilitates the suction of fuel in the cup 6 by the delivery pump 7. The delivery pump 7 supplies fuel to the injector 2 via a delivery line 10, the injector 2 being arranged to inject fuel into the engine, and the excess fuel being returned to the cup 6 via a return line 11. The bottom of the oil cup 6 is provided with an oil inlet hole 9 and an oil outlet hole 8, and the pressure in the oil cup 6 can be reduced by discharging fuel at the oil outlet hole 8, so that the fuel enters the oil cup at the oil inlet hole 9.
In the scheme, the oil return pipeline 11 does not extend to the oil outlet 8, instead, the oil return power pipeline 14 connected with the oil transfer pump 7 extends to the oil outlet 8, and part of the fuel output by the oil transfer pump 7 (which may be an electronic pump) is conveyed to the oil outlet 8 through the oil return power pipeline 14 and discharged into the oil tank 5, so that the fuel of the oil return pipeline 11 can be prevented from being waxed to block the oil outlet 8.
In addition, a pressure relief pipeline 13 is connected to the part of the oil pipeline 10 located in the oil cup 6. As shown in fig. 1, the fuel pump 5 provides sufficient pressure for delivering fuel in the fuel delivery line 10, when the amount of fuel in the injector 2 changes greatly and when more fuel is not needed, the pressure in the fuel delivery line 10 increases, and the bypass pressure relief line 13 can discharge part of the fuel into the cup 6 to reduce the pressure in the fuel delivery line 10. In other embodiments, a structure similar to the relief line 13 may be provided in a portion of the oil delivery line 10 outside the tank 5.
Further, a check valve is arranged on the pressure relief pipeline 13. The check valve may be opened when a predetermined pressure is reached in the pressure relief line 13, thereby allowing the pressure relief line 13 to discharge excess fuel into the oil cup 6 to reduce the pressure in the oil delivery line 10, and when the pressure in the oil delivery line 10 is low, the check valve is in a closed state, and the fuel in the oil delivery line 10 is not discharged through the pressure relief line 13.
The oil delivery pipe 10 is provided with a high-pressure oil pump 3 located outside the oil tank 5. In some cases, the length of the delivery pipe 10 from the fuel tank 5 to the fuel injector 2 may be large, and the attenuation of the fuel pressure in the delivery pipe 10 is large, so that the high-pressure oil pump 3 may be additionally provided on the delivery pipe 10, and the fuel in the delivery pipe 10 may be further pressurized so that the fuel is delivered to the fuel injector 2 with sufficient pressure.
In addition, a pressure relief branch 12 is connected beside the high-pressure oil pump 3, and the pressure relief branch 12 is connected to the oil return pipeline 11. When the amount of oil sprayed from the injector 2 is small, that is, when the pressure in the oil delivery pipe 10 downstream of the high-pressure oil pump 3 is too high, part of the fuel in the oil delivery pipe 10 can be directly delivered to the oil return pipe 11 through the pressure relief branch 12, and directly returned to the oil cup 6.
In addition, the oil delivery pipeline 10 is provided with a high-pressure oil rail 1 between the high-pressure oil pump 3 and the oil injector 2. The high pressure fuel rail 1 may be connected to a plurality of fuel injectors 2 to deliver fuel from a delivery line 10 to the plurality of fuel injectors 2, the plurality of fuel injectors 2 corresponding to a plurality of cylinders of the engine.
In addition, the oil delivery pipeline 10 is provided with a filter 4 positioned between the high-pressure oil pump 3 and the oil delivery pump 7. The filter 4 may be a fuel filter, and may filter the fuel in the high-pressure pipeline 10, so that fewer impurity particles exist in the fuel delivered to the high-pressure oil pump 3, the high-pressure oil rail 1, and the fuel injector 2.
Alternatively, the oil cup 6 is attached to the top of the oil tank 5, and the bottom of the oil cup 6 is adjacent to the bottom of the oil tank 5. Referring to fig. 1, the cup 6 is attached to the top of the tank 5 and the bottom of the cup 6 is adjacent to the bottom of the tank 5 to draw fuel from the tank 5 through the inlet 9, especially when the fuel level in the tank 5 is low, and also into the cup 6 to raise the level of fuel at which the fuel pump 7 is located.
Specifically, an oil inlet is arranged at the bottom of the oil transfer pump 7, and the oil inlet is adjacent to the bottom of the oil cup 6. The fuel delivery pump 7 can suck fuel from the oil cup 6 through the oil inlet under the condition that the liquid level in the oil cup 6 is low, so that the fuel in the fuel tank 5 and the oil cup 6 is fully utilized.
Additionally, the utility model also provides a vehicle, wherein, the vehicle is provided with above scheme fuel conveying mechanism. Wherein, this fuel delivery mechanism can carry diesel oil, petrol etc. and sprayer 2 can be to the oil spout in the cylinder of engine.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a fuel delivery mechanism, its characterized in that, fuel delivery mechanism includes oil tank (5), sprayer (2), sets up oil cup (6), setting in oil tank (5) are in fuel delivery pump (7) in oil cup (6), connect in fuel delivery pump (7) with defeated oil pipe way (10) between sprayer (2) and connect in sprayer (2) extend to return oil pipe way (11) in oil cup (6), the bottom of oil cup (6) be provided with inlet port (9) and oil outlet (8) of oil tank (5) intercommunication, return oil pipe way (11) are located one end in oil cup (6) with oil outlet (8) keep the interval, fuel delivery pump (7) are connected with and extend to return power pipeline (14) of oil outlet (8) department.
2. The fuel delivery mechanism according to claim 1, characterized in that a pressure relief line (13) is connected to the portion of the fuel delivery line (10) located in the oil cup (6).
3. A fuel delivery mechanism according to claim 2, wherein a one-way valve is provided in the pressure relief line (13).
4. A fuel delivery mechanism according to claim 1, characterized in that the delivery line (10) is provided with a high-pressure fuel pump (3) located outside the fuel tank (5).
5. The fuel delivery mechanism according to claim 4, characterized in that a pressure relief branch (12) is connected to the high-pressure fuel pump (3), and the pressure relief branch (12) is connected to the return line (11).
6. A fuel delivery mechanism according to claim 4, characterized in that the delivery line (10) is provided with a high-pressure fuel rail (1) between the high-pressure fuel pump (3) and the fuel injector (2).
7. A fuel delivery mechanism according to claim 6, characterized in that the delivery line (10) is provided with a filter (4) between the high-pressure fuel pump (3) and the delivery pump (7).
8. A fuel delivery mechanism according to claim 1, wherein the oil cup (6) is connected to the top of the fuel tank (5) and the bottom of the oil cup (6) is adjacent the bottom of the fuel tank (5).
9. The fuel delivery mechanism according to claim 1, characterized in that the bottom of the fuel delivery pump (7) is provided with an oil inlet, which is adjacent to the bottom of the oil cup (6).
10. A vehicle, characterized in that the vehicle is provided with a fuel delivery mechanism according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921406167.2U CN210440140U (en) | 2019-08-27 | 2019-08-27 | Fuel conveying mechanism and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921406167.2U CN210440140U (en) | 2019-08-27 | 2019-08-27 | Fuel conveying mechanism and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210440140U true CN210440140U (en) | 2020-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921406167.2U Active CN210440140U (en) | 2019-08-27 | 2019-08-27 | Fuel conveying mechanism and vehicle |
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| Country | Link |
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| CN (1) | CN210440140U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458490A (en) * | 2022-02-16 | 2022-05-10 | 一汽解放汽车有限公司 | Oil suction valve |
-
2019
- 2019-08-27 CN CN201921406167.2U patent/CN210440140U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458490A (en) * | 2022-02-16 | 2022-05-10 | 一汽解放汽车有限公司 | Oil suction valve |
| CN114458490B (en) * | 2022-02-16 | 2023-01-17 | 一汽解放汽车有限公司 | Oil suction valve |
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