CN216811981U - Fuel oil system, engine assembly and vehicle - Google Patents
Fuel oil system, engine assembly and vehicle Download PDFInfo
- Publication number
- CN216811981U CN216811981U CN202123222845.XU CN202123222845U CN216811981U CN 216811981 U CN216811981 U CN 216811981U CN 202123222845 U CN202123222845 U CN 202123222845U CN 216811981 U CN216811981 U CN 216811981U
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- Prior art keywords
- oil
- filter
- fuel
- fuel system
- pump
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- 239000000295 fuel oil Substances 0.000 title description 11
- 239000000446 fuel Substances 0.000 claims abstract description 87
- 238000002347 injection Methods 0.000 claims abstract description 35
- 239000007924 injection Substances 0.000 claims abstract description 35
- 239000002828 fuel tank Substances 0.000 claims abstract description 14
- 238000001914 filtration Methods 0.000 claims abstract description 9
- 239000002245 particle Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 60
- 239000012530 fluid Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
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- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The utility model relates to the technical field of vehicles, and particularly discloses a fuel system, an engine assembly and a vehicle, wherein the fuel system comprises a fuel tank, a fuel injection pump, a fuel delivery pump, a first filter, a fuel return pipeline and a control valve, the fuel delivery pump can suck oil from the fuel tank and convey the oil to the fuel injection pump, the first filter is connected between the fuel delivery pump and the fuel injection pump and is used for filtering the oil conveyed to the fuel injection pump by the fuel delivery pump, the first filter is provided with a first small exhaust hole, the first small exhaust hole is connected with the fuel tank through a first pipeline, the fuel return pipeline is connected with an input end of the fuel injection pump and the fuel tank, and the control valve is arranged on the fuel return pipeline and is used for controlling the connection or disconnection of the fuel return pipeline. When exhausting, the control valve is communicated with the oil return pipeline to reduce exhaust back pressure, most of gas in the first filter and in the pipeline can be discharged into the oil tank from the oil return pipeline, and the other small part of gas can be discharged into the oil tank from the first exhaust small hole to ensure that the gas in the first filter is completely discharged.
Description
Technical Field
The utility model relates to the technical field of vehicles, in particular to a fuel system, an engine assembly and a vehicle.
Background
The existing engine fuel system is generally composed of a fuel tank, a fuel coarse filter, a fuel delivery pump, a fuel fine filter, a fuel injection pump and corresponding pipelines. The fuel oil reaches the fuel oil coarse filter from the oil tank through the oil pipe, reaches the fuel delivery pump after coarse filtration of the fuel oil coarse filter, and then reaches the fuel injection pump after fine filtration of the fuel oil fine filter after being output from the fuel delivery pump. Generally, a hand pump or a water heater is arranged on a fuel oil coarse filter to provide pressure for a fuel oil system to exhaust and supply oil before an engine is started.
However, after the fuel system sucks air in the pipeline and maintains the filter element, because the oil outlet pressure of the water heater or the hand pump is low, the overflow valve of the fuel injection pump cannot be opened for exhausting, and the gas in the fuel injection pump and the fuel fine filter cannot be smoothly exhausted, the low-pressure pipeline needs to be disassembled for exhausting, so that the operation for disassembling the low-pressure pipeline is complex, the oil directly flows out, the surrounding parts and the environment are polluted, and the disassembly pipeline brings the damage risk of the combined sealing washer, and the reliability is influenced.
In view of the above, the prior patent with application number CN201822192771.1 provides an engine low-pressure fuel system, in which an automatic exhaust check valve is disposed at an inlet of a fuel fine filter, and the automatic exhaust check valve is connected to a fuel tank through a pipeline, and the exhaust check valve can ensure that gas in the pipeline in front of the fuel fine filter is smoothly exhausted, but because the automatic exhaust check valve is connected to the inlet of the fuel fine filter, it is difficult to ensure that gas in the fuel fine filter is completely exhausted through return oil.
SUMMERY OF THE UTILITY MODEL
The utility model aims to: the utility model provides a fuel oil system, engine assembly and vehicle to solve in the fuel oil system among the relevant art and set up automatic exhaust check valve between the import of fuel fine filter and oil tank, be difficult to guarantee that the gas in the fuel fine filter is completely discharged through the return oil.
In one aspect, the present invention provides a fuel system comprising:
an oil tank;
an injection pump;
the oil transfer pump can suck oil from the oil tank and output the oil to the oil injection pump;
the first filter is connected between the oil transfer pump and the oil injection pump and used for filtering oil liquid conveyed to the oil injection pump by the oil transfer pump, a first exhaust small hole is formed in the first filter, and the first exhaust small hole is connected with the oil tank through a first pipeline;
the oil return pipeline is connected with the input end of the oil injection pump and the oil tank;
and the control valve is arranged on the oil return pipeline and is used for controlling the connection or disconnection of the oil return pipeline.
As the preferable technical scheme of the fuel system, the fuel injection pump is provided with a second small exhaust hole, and the second small exhaust hole is connected with the fuel tank through a second pipeline.
As a preferred technical solution of the fuel system, the fuel system further includes a second filter, and the second filter is connected between the fuel tank and the fuel delivery pump.
As a preferable technical scheme of the fuel system, the diameter of the smallest particulate matter which can be filtered by the first filter is smaller than that of the smallest particulate matter which can be filtered by the second filter.
As a preferred technical solution of the fuel system, the fuel system further comprises a hand pump for being mounted on the first filter or the second filter; or,
the fuel system further includes an electric pump for mounting to the first filter or the second filter.
As a preferable technical scheme of the fuel system, the control valve is a manual valve or an electric valve.
As a preferable technical scheme of the fuel system, the fuel system further comprises a first pressure sensor, and the first pressure sensor is used for detecting the pressure of the oil output by the first filter.
As a preferable technical scheme of the fuel system, the fuel system further comprises a second pressure sensor, and the second pressure sensor is used for detecting the pressure of the oil input by the first filter.
In another aspect, the present disclosure provides an engine assembly including the fuel system of any one of the above aspects.
In yet another aspect, the present disclosure provides a vehicle including an engine assembly according to any one of the above aspects.
The utility model has the beneficial effects that:
the utility model provides a fuel system, an engine assembly and a vehicle. Wherein, the oil tank is used for storing the fuel, the fuel delivery pump can follow the oil tank and absorb fluid and carry fluid to the injection pump, first filter is connected between fuel delivery pump and injection pump and is used for filtering the fluid that is carried to the injection pump by the fuel delivery pump, be equipped with first exhaust aperture on the first filter, first exhaust aperture is through first pipe connection oil tank, return oil pipe connects the input and the oil tank of injection pump, the control valve sets up in oil return pipe, and be used for controlling the intercommunication or the disconnection of oil return pipe. When the fuel system needs to exhaust, the control valve is communicated with the oil return pipeline to reduce exhaust back pressure, most of gas in the first filter and in the pipeline can be discharged into the oil tank from the oil return pipeline, and meanwhile, the other small part of gas can be discharged into the oil tank from the first exhaust small hole to ensure that the gas in the first filter is completely discharged.
Drawings
FIG. 1 is a schematic structural diagram of a fuel system in an embodiment of the utility model.
In the figure:
1. an oil tank; 2. an injection pump; 3. an oil transfer pump; 4. a first filter; 5. an oil return line; 6. a control valve; 7. a second filter; 8. a first exhaust aperture; 9. a first pipeline; 10. a second vent aperture; 11. A second pipeline.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Where the terms "first position" and "second position" are two different positions, and where a first feature is "over", "above" and "on" a second feature, it is intended that the first feature is directly over and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the existing low-pressure fuel system of the engine, an automatic exhaust one-way valve is arranged at an inlet of a fuel fine filter and is connected with a fuel tank through a pipeline, the exhaust one-way valve can ensure that gas in the pipeline in front of the fuel fine filter is smoothly exhausted, but the automatic exhaust one-way valve is connected with the inlet of the fuel fine filter, so that the gas in the fuel fine filter is difficult to be completely exhausted through return oil. In this regard, the present embodiment provides a fuel system capable of ensuring complete discharge of gas in a filter.
Specifically, as shown in fig. 1, the fuel system includes a fuel tank 1, a fuel injection pump 2, a fuel delivery pump 3, a first filter 4, a return line 5, and a control valve 6. Wherein, oil tank 1 is used for storing the fuel, defeated oil pump 3 can draw fluid and carry fluid to injection pump 2 from oil tank 1, first filter 4 is connected between defeated oil pump 3 and injection pump 2 and is used for filtering the fluid of being carried to injection pump 2 by defeated oil pump 3, be equipped with first exhaust aperture 8 on the first filter 4, first exhaust aperture 8 is through first pipeline 9 connection oil tank 1, return oil pipe way 5 connects injection pump 2's input and oil tank 1, control valve 6 sets up in return oil pipe way 5, and be used for controlling the intercommunication or the disconnection of return oil pipe way 5. When the fuel system provided by the embodiment needs to exhaust, the control valve 6 is communicated with the oil return pipeline 5 to reduce exhaust back pressure, at this time, most of gas in the first filter 4 and in the pipeline can be discharged into the fuel tank 1 from the oil return pipeline 5, and at the same time, the other small part of gas can be discharged into the fuel tank 1 from the first small exhaust hole 8 to ensure that the gas in the first filter 4 is completely discharged.
The control valve 6 may be a manual valve or an electric valve.
The fuel system further comprises a hand pump for mounting to the first filter 4 or the second filter 7. In particular, the present exemplary embodiment shows a hand pump for mounting on the second filter 7, by means of which the gas present in the fuel system can be discharged. Wherein, the hand pump can also be replaced by an electric pump.
Optionally, the fuel system further comprises a second filter 7, the second filter 7 being connected between the fuel tank 1 and the fuel delivery pump 3. The cleanliness of the fuel fed to the injection pump 2 can be ensured by the cooperation of the second filter 7 and the first filter 4. Preferably, the diameter of the smallest particles that the first filter 4 can filter is smaller than the diameter of the smallest particles that the second filter 7 can filter. Specifically, in the present embodiment, the first filter 4 is a fine filter, and the second filter 7 is a coarse filter, and the fuel oil is filtered by the coarse filter for filtering larger particles and then filtered by the fine filter for filtering smaller particles. In other embodiments, the first filter 4 and the second filter 7 may be of the same type, such as fine filters.
Optionally, the injection pump 2 is provided with a second small exhaust hole 10, and the second small exhaust hole 10 is connected to the oil tank 1 through a second pipeline 11. By providing the injection pump 2 with a second small exhaust opening 10, the gas in the injection pump 2 can be discharged into the oil tank 1 via a second line 11.
Optionally, the fuel system further comprises a first pressure sensor for detecting the pressure of the oil output by the first filter 4. When the exhaust operation is performed, when the control valve 6 is connected or disconnected with the oil return pipeline 5, the first pressure sensor can detect a first pressure value and a second pressure value, and the difference value between the first pressure value and the second pressure value should be within a set range, so that whether the control valve 6 and the oil return pipeline 5 have faults or not can be judged by judging whether the difference value between the first pressure value and the second pressure value is within the set range, wherein the set range can be obtained through a large number of early tests.
Optionally, the fuel system further comprises a second pressure sensor for detecting the pressure of the oil fed by the first filter 4. When the exhaust operation is not performed, the difference value of the pressures detected by the first pressure sensor and the second pressure sensor is the front-back pressure difference of the first filter 4, when the front-back pressure difference of the first filter 4 is smaller than the set pressure difference, the fact that the first filter 4 can work normally is indicated, and when the front-back pressure difference of the first filter 4 is larger than the set pressure difference, the fact that the filter element of the first filter 4 needs to be replaced is indicated, so that a driver can be reminded to replace the filter element of the first filter 4 in time.
The embodiment also provides an engine assembly which comprises the fuel system in the scheme.
The embodiment also provides a vehicle comprising the engine assembly in the scheme.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A fuel system, comprising:
an oil tank (1);
an injection pump (2);
the oil transfer pump (3) can suck oil from the oil tank (1) and output the oil to the oil injection pump (2);
the first filter (4) is connected between the oil transfer pump (3) and the oil injection pump (2) and used for filtering oil liquid conveyed to the oil injection pump (2) by the oil transfer pump (3), a first exhaust small hole (8) is formed in the first filter (4), and the first exhaust small hole (8) is connected with the oil tank (1) through a first pipeline (9);
the oil return pipeline (5) is connected with the input end of the oil injection pump (2) and the oil tank (1);
and the control valve (6) is arranged on the oil return pipeline (5) and is used for controlling the connection or disconnection of the oil return pipeline (5).
2. Fuel system according to claim 1, characterized in that the injection pump (2) is provided with a second vent aperture (10), the second vent aperture (10) being connected to the fuel tank (1) by a second line (11).
3. Fuel system according to claim 1, characterized in that it further comprises a second filter (7), said second filter (7) being connected between said tank (1) and said feed pump (3).
4. Fuel system according to claim 3, characterized in that the diameter of the smallest particles that the first filter (4) can filter is smaller than the diameter of the smallest particles that the second filter (7) can filter.
5. Fuel system according to claim 3, characterized in that it further comprises a hand pump for mounting to the first filter (4) or the second filter (7); or,
the fuel system further comprises an electric pump for mounting to the first filter (4) or the second filter (7).
6. Fuel system according to claim 1, characterized in that the control valve (6) is a manual or electric valve.
7. Fuel system according to claim 1, characterized in that it further comprises a first pressure sensor for detecting the pressure of the oil output by the first filter (4).
8. Fuel system according to claim 1, characterized in that it further comprises a second pressure sensor for detecting the pressure of the oil fed by the first filter (4).
9. An engine assembly comprising a fuel system as claimed in any one of claims 1 to 8.
10. A vehicle comprising the engine assembly of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123222845.XU CN216811981U (en) | 2021-12-21 | 2021-12-21 | Fuel oil system, engine assembly and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123222845.XU CN216811981U (en) | 2021-12-21 | 2021-12-21 | Fuel oil system, engine assembly and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216811981U true CN216811981U (en) | 2022-06-24 |
Family
ID=82054972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123222845.XU Active CN216811981U (en) | 2021-12-21 | 2021-12-21 | Fuel oil system, engine assembly and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216811981U (en) |
-
2021
- 2021-12-21 CN CN202123222845.XU patent/CN216811981U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |