CN220248239U - Two-section oil pressure-adjustable oil pump assembly - Google Patents
Two-section oil pressure-adjustable oil pump assembly Download PDFInfo
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- CN220248239U CN220248239U CN202321543127.9U CN202321543127U CN220248239U CN 220248239 U CN220248239 U CN 220248239U CN 202321543127 U CN202321543127 U CN 202321543127U CN 220248239 U CN220248239 U CN 220248239U
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- pressure regulating
- regulating valve
- fuel
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- 239000000446 fuel Substances 0.000 claims description 77
- 230000001105 regulatory effect Effects 0.000 claims description 73
- 239000003921 oil Substances 0.000 description 61
- 239000002828 fuel tank Substances 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000000295 fuel oil Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Fuel-Injection Apparatus (AREA)
Abstract
The utility model relates to a two-section oil pump assembly capable of adjusting oil pressure, which aims at solving the problems that the existing oil pump assembly can only provide constant oil pressure and the oil pressure can not be properly adjusted along with the working condition load of an engine.
Description
Technical Field
The utility model relates to the technical field of oil pump assemblies, in particular to an oil pump assembly with two sections of adjustable oil pressure.
Background
The oil pump assembly provides fuel with pressure meeting the system requirement for the engine, and is generally arranged in the oil tank to provide the required fuel for the engine through the connecting oil pipe. The oil pump assembly generally consists of a filter screen, a pump core, a mechanical pressure regulating valve and an oil pump bracket for fixing the components.
Referring to fig. 1, the oil pump core is typically electric, driven by an ECU (electronic control system) directly or through a relay, and then the motor drives the impeller to obtain fuel from the tank and pressurize. The pressure regulating device is generally a mechanical diaphragm type and is used for providing fuel to the oil pump device for pressure regulation so as to achieve the constant fuel pressure required by the system.
The oil pump assembly has the defects that only constant fuel pressure can be provided, and the fuel pressure cannot be properly regulated along with the working condition load of an engine; when selecting a fuel injector model for a high-speed four-stroke gasoline engine (e.g., at speeds above 10000 revolutions), a fuel injector with a higher flow rate is required to meet the fuel injection demand at very high speeds. However, at low engine speeds, a large amount of fuel injection is not required, and under such conditions the fuel injector flow is too great. The flow rate of the fuel injector generally increases with increasing system fuel pressure and decreases with decreasing system fuel pressure, so this problem is well addressed if the system fuel pressure can be reduced when the engine speed is low.
Disclosure of Invention
The utility model aims to solve the problems that in the prior art, only constant fuel pressure can be provided, and the fuel pressure can not be properly regulated along with the working condition load of an engine, and provides a two-section oil pressure-adjustable oil pump assembly.
The aim of the utility model can be achieved by the following technical scheme:
the utility model provides an oil pump assembly of two sections adjustable oil pressure, includes pump core, first air-vent valve and the second pressure regulating subassembly of locating in the oil tank, the pump core passes through the pipeline and is connected with the engine, it has the fuel filter to establish ties on the pipeline that pump core and engine are connected, first air-vent valve passes through the pipeline connection with the fuel filter, be equipped with the second pressure regulating subassembly on the pipeline that fuel filter and engine are connected.
In one embodiment of the utility model, a filter screen is arranged at the inlet of the pump core, and the filter screen and the pump core are connected through a pipeline.
In one embodiment of the utility model, the oil outlet of the pump core is connected with a fuel filter through a connecting oil pipe, and the fuel filter is connected with an engine through the connecting oil pipe.
In one embodiment of the utility model, the second pressure regulating assembly comprises a solenoid valve and a second pressure regulating valve, the second pressure regulating valve is connected with the engine through a pipeline, the pipeline connected with the engine by the second pressure regulating valve is connected with the solenoid valve in series,
the pressure of the fuel supplied from the pump core to the engine is controlled by the first pressure regulating valve when the solenoid valve is closed, and the pressure of the fuel supplied from the pump core to the engine is controlled by the second pressure regulating valve when the solenoid valve is open.
In one embodiment of the present utility model, the oil pump assembly further includes an oil pump bracket, and the filter screen, the pump core, the first pressure regulating valve, the electromagnetic valve and the second pressure regulating valve are all disposed on the oil pump bracket.
In one embodiment of the utility model, the first pressure regulating valve is connected to the fuel filter via a first return line.
In one embodiment of the present utility model, the second pressure regulating valve is connected to the engine through a second oil return pipe, and the electromagnetic valve is disposed on the second oil return pipe.
In one embodiment of the present utility model, the oil pump assembly further includes a relay and an Electronic Controller (ECU), one end of the relay is connected to the pump core, and the other end of the relay is connected to the electronic controller.
In one embodiment of the utility model, the electronic controller is simultaneously connected with the electromagnetic valve, the electronic controller drives the pump core, then the motor drives the impeller to obtain fuel from the fuel tank and pressurize the fuel, and the first pressure regulating valve and the second pressure regulating valve regulate the pressure of the supplied fuel to reach the constant fuel pressure required by the whole fuel path.
In one embodiment of the present utility model, the first pressure regulating valve is a 300kPa pressure regulating valve; the second pressure regulating valve is a 250kPa pressure regulating valve, and the electromagnetic valve is a normally open electromagnetic valve.
Compared with the prior art, the utility model has the following beneficial effects:
1. the oil pump assembly is internally integrated with two pressure regulating valves, so that two different system fuel pressures of high and low can be provided;
2. the oil pump assembly is internally integrated with the electromagnetic valve, and the fuel pressure of the system is regulated by controlling the opening and closing of the electromagnetic valve;
3. the fuel pressure switching of the whole oil way can be flexibly controlled by the ECU according to the working condition of the engine;
4. all parts of the oil pump assembly provided by the utility model are integrated on the oil pump bracket, and can be directly installed on an oil tank for use;
5. the fuel pressure of the utility model can be regulated in two stages, namely high oil pressure and low oil pressure, the high oil pressure is adopted when the rotation speed of the engine is high and the oil demand is large, and the low oil pressure is adopted when the rotation speed of the engine is low and the oil demand is small;
6. the utility model can ensure that the engine adopts higher system fuel pressure under the working condition of large fuel demand, the flow of the fuel injector is large enough to meet the fuel demand of the engine, the engine is ensured to have enough power and torque, the engine adopts lower system fuel pressure under the working condition of low rotating speed and the like, the flow of the fuel injector is reduced, the fuel injection pulse width of the fuel injector is ensured to be within a reasonable range and not to fall into a nonlinear region, the precision of the fuel injection quantity can be ensured, and the rotating speed stability of the engine is improved.
Drawings
FIG. 1 is a schematic diagram of a conventional oil pump assembly;
fig. 2 is a schematic structural diagram of two sections of oil pump assembly with adjustable oil pressure according to the present utility model.
Description of the drawings: 1. the fuel tank comprises a fuel tank body 2, a filter screen 3, a pump core 4, a first pressure regulating valve 5, a fuel filter 6, an engine 7, a solenoid valve 8, a second pressure regulating valve 9, a conventional fuel supply path 10, a fuel return path 11, a fuel pump inlet 12 and a pressure regulating valve.
Detailed Description
The utility model will now be described in detail with reference to the drawings and specific examples.
In the description of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. 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.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Examples
Referring to fig. 2, the present embodiment provides a two-section oil pump assembly with adjustable oil pressure, which comprises a pump core 3, a first pressure regulating valve 4 and a second pressure regulating assembly, wherein the pump core 3 is arranged in an oil tank 1, the pump core 3 is connected with an engine 6 through a pipeline, a fuel filter 5 is connected in series on the pipeline connected with the pump core 3 and the engine 6, the first pressure regulating valve 4 is connected with the fuel filter 5 through a pipeline, and the pipeline connected with the fuel filter 5 and the engine 6 is provided with the second pressure regulating assembly.
In this embodiment, a filter screen 2 is disposed at the inlet of the pump core 3, and the filter screen 2 and the pump core 3 are connected through a pipe.
In this embodiment, the oil outlet of the pump core 3 is connected to the fuel filter 5 through a connecting oil pipe, and the fuel filter 5 is connected to the engine 6 through a connecting oil pipe.
In the embodiment, the second pressure regulating assembly comprises an electromagnetic valve 7 and a second pressure regulating valve 8, the second pressure regulating valve 8 is connected with the engine 6 through a pipeline, the electromagnetic valve 7 is connected in series with the pipeline of the second pressure regulating valve 8 connected with the engine 6,
the pressure of the fuel supplied from the pump core 3 to the engine 6 is controlled by the first pressure regulating valve 4 when the solenoid valve 7 is closed, and the pressure of the fuel supplied from the pump core 3 to the engine 6 is controlled by the second pressure regulating valve 8 when the solenoid valve 7 is open.
In this embodiment, the oil pump assembly further includes an oil pump bracket, and the filter screen 2, the pump core 3, the first pressure regulating valve 4, the electromagnetic valve 7, and the second pressure regulating valve 8 are all disposed on the oil pump bracket.
In the present embodiment, the first pressure regulating valve 4 is connected to the fuel filter 5 through a first oil return pipe.
In this embodiment, the second pressure regulating valve 8 is connected to the engine 6 through a second oil return pipe, and the electromagnetic valve 7 is disposed on the second oil return pipe.
In this embodiment, the oil pump assembly further includes a relay and an Electronic Controller (ECU), one end of the relay is connected to the pump core 3, and the other end of the relay is connected to the electronic controller.
In this embodiment, the electronic controller is simultaneously connected to the solenoid valve 7, the electronic controller drives the pump core 3, and then the motor drives the impeller to obtain fuel from the fuel tank 1 and pressurize the fuel, and the first pressure regulating valve 4 and the second pressure regulating valve 8 regulate the pressure of the supplied fuel to achieve a constant fuel pressure required by the whole fuel path.
In this embodiment, the first pressure regulating valve 4 is a 300kPa pressure regulating valve; the second pressure regulating valve 8 is a 250kPa pressure regulating valve, and the electromagnetic valve 7 is a normally open type electromagnetic valve.
The embodiment also provides a use method of the oil pump assembly with two sections of adjustable oil pressure, which comprises the following specific steps:
the ECU directly or through a relay drives the pump core 3, then the motor drives the impeller to obtain fuel oil from the fuel tank and pressurize, the first pressure regulating valve 4 and the second pressure regulating valve 8 regulate the pressure of the supplied fuel oil to reach the constant fuel oil pressure required by the whole oil way; the oil pump assembly comprises two pressure regulating valves, such as a low pressure 250kPa pressure regulating valve and a high pressure 300kPa pressure regulating valve, and a normally open electromagnetic valve 7 is integrated; the electromagnetic valve 7 is controlled by the ECU, the electromagnetic valve 7 is opened when the ECU does not control, and the electromagnetic valve 7 is closed when the ECU controls; when the ECU does not control the electromagnetic valve 7, the electromagnetic valve 7 is normally open, the fuel pressure of the pump core 3 supplied to the engine 6 is controlled by the second pressure regulating valve 8, and the fuel pressure of the whole oil way is 250kPa; when the ECU controls the electromagnetic valve 7, the electromagnetic valve 7 is closed, a 250kPa pressure relief passage is closed, the fuel pressure of the pump core 3 supplied to the engine 6 is controlled by the first pressure regulating valve 4, the fuel pressure of the whole oil way is raised to 300kPa, and the filter screen 2 and the fuel filter 5 play a role in filtering.
The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present utility model. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present utility model is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present utility model.
Claims (10)
1. The utility model provides an oil pump assembly of two sections adjustable oil pressure, its characterized in that, including locating pump core (3), first air-vent valve (4) and the second pressure regulating subassembly in oil tank (1), pump core (3) are connected with engine (6) through the pipeline, establish ties on the pipeline that pump core (3) are connected with engine (6) has fuel filter (5), first air-vent valve (4) are through pipe connection with fuel filter (5), be equipped with the second pressure regulating subassembly on the pipeline that fuel filter (5) are connected with engine (6).
2. The oil pump assembly with two sections of adjustable oil pressure according to claim 1, wherein a filter screen (2) is arranged at the inlet of the pump core (3), and the filter screen (2) and the pump core (3) are connected through a pipeline.
3. The two-section oil pressure adjustable oil pump assembly according to claim 1, wherein the oil outlet of the pump core (3) is connected with a fuel filter (5) through a connecting oil pipe, and the fuel filter (5) is connected with an engine (6) through the connecting oil pipe.
4. The oil pump assembly with two sections of adjustable oil pressure according to claim 2, wherein the second pressure regulating assembly comprises an electromagnetic valve (7) and a second pressure regulating valve (8), the second pressure regulating valve (8) is connected with the engine (6) through a pipeline, the electromagnetic valve (7) is connected in series with the pipeline of the second pressure regulating valve (8) connected with the engine (6),
the fuel pressure of the pump core (3) supplied to the engine (6) is controlled by the first pressure regulating valve (4) when the solenoid valve (7) is closed, and the fuel pressure of the pump core (3) supplied to the engine (6) is controlled by the second pressure regulating valve (8) when the solenoid valve (7) is opened.
5. The oil pump assembly with two sections of adjustable oil pressure according to claim 4, further comprising an oil pump bracket, wherein the filter screen (2), the pump core (3), the first pressure regulating valve (4), the electromagnetic valve (7) and the second pressure regulating valve (8) are all arranged on the oil pump bracket.
6. The two-stage oil pressure adjustable oil pump assembly according to claim 1, wherein the first pressure regulating valve (4) is connected with the fuel filter (5) through a first oil return pipe.
7. The oil pump assembly with two sections of adjustable oil pressure according to claim 4, wherein the second pressure regulating valve (8) is connected with the engine (6) through a second oil return pipe, and the electromagnetic valve (7) is arranged on the second oil return pipe.
8. The oil pump assembly with two sections of adjustable oil pressure according to claim 4, further comprising a relay and an electronic controller, wherein one end of the relay is connected with the pump core (3), and the other end of the relay is connected with the electronic controller.
9. A two-stage oil pressure adjustable oil pump assembly according to claim 8, characterized in that the electronic controller is connected with the electromagnetic valve (7) at the same time, the electronic controller drives the pump core (3), then the motor drives the impeller to obtain fuel from the oil tank (1) and to pressurize, and the first pressure regulating valve (4) and the second pressure regulating valve (8) regulate the pressure of the supplied fuel to achieve the constant fuel pressure required by the whole oil path.
10. The two-stage oil pressure adjustable oil pump assembly according to claim 4, wherein the first pressure regulating valve (4) is a 300kPa pressure regulating valve; the second pressure regulating valve (8) is a 250kPa pressure regulating valve, and the electromagnetic valve (7) is a normally open electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321543127.9U CN220248239U (en) | 2023-06-16 | 2023-06-16 | Two-section oil pressure-adjustable oil pump assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321543127.9U CN220248239U (en) | 2023-06-16 | 2023-06-16 | Two-section oil pressure-adjustable oil pump assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220248239U true CN220248239U (en) | 2023-12-26 |
Family
ID=89232978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321543127.9U Active CN220248239U (en) | 2023-06-16 | 2023-06-16 | Two-section oil pressure-adjustable oil pump assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220248239U (en) |
-
2023
- 2023-06-16 CN CN202321543127.9U patent/CN220248239U/en active Active
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