CN212985411U - Electric pump assembly and fuel system - Google Patents
Electric pump assembly and fuel system Download PDFInfo
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- CN212985411U CN212985411U CN202021247466.9U CN202021247466U CN212985411U CN 212985411 U CN212985411 U CN 212985411U CN 202021247466 U CN202021247466 U CN 202021247466U CN 212985411 U CN212985411 U CN 212985411U
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- electric pump
- pump
- oil
- fuel
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Abstract
The utility model discloses fuel oil system technical field, concretely relates to electric pump subassembly and fuel oil system. The utility model discloses an electric pump subassembly includes: an electric pump including a pump body; the rotating speed variable motor drives the pump body to rotate; the pressure sensor is arranged at the outlet of the electric pump; and the electric pump controller controls the rotation of the rotating speed variable motor according to the pressure sensor. The utility model discloses an among the electric pump subassembly, pressure sensor can detect the electric pump export, and the pressure of oil transfer pump entry is promptly crossed when detecting the pressure value and crossing excessively, and the variable motor of electric pump controller control speed rotates and improves the rotational speed, and pump body rotational speed improves promptly, increases oil transfer pump fuel feeding ability. When the pressure value is detected to be too high, the electric pump controller controls the variable-speed motor to rotate to reduce the rotating speed, namely the rotating speed of the pump body is reduced, the situation that the pressure before the oil delivery pump is too high is avoided, and the fuel system can be ensured to work in the best state all the time.
Description
Technical Field
The utility model discloses fuel oil system technical field, concretely relates to electric pump subassembly and fuel oil system.
Background
The existing engine fuel system mainly comprises an oil tank, a fuel coarse filter, a common electric pump, a fuel delivery pump, a fuel fine filter, a fuel injection pump, a common rail pipe, a fuel injector and the like. When the diesel engine works, the fuel delivery pump generates negative pressure to suck fuel oil into the oil inlet pipe from the oil tank, and the fuel oil enters the fuel delivery pump after passing through the fuel oil coarse filter and then enters the diesel engine.
In the prior art, the rotating speed of the electric pump is constant, and when the oil quantity demand of an oil path of a fuel system is increased, the oil supply capacity of the electric pump is not enhanced, so that the power of an engine is reduced and the power is insufficient; when the oil quantity demand of the fuel oil system is reduced, the oil supply capacity is excessive, and unnecessary waste is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving current fuel oil system oil circuit oil mass demand increase at least, the fuel feeding ability of electric pump does not strengthen, leads to engine power to descend, when fuel oil system oil mass demand reduces, the problem of fuel feeding ability surplus. The purpose is realized by the following technical scheme:
a first aspect of the present invention provides a motor-pump assembly, comprising:
an electric pump including a pump body;
the rotating speed variable motor drives the pump body to rotate;
a pressure sensor disposed at an outlet of the electric pump;
and the electric pump controller controls the rotation of the rotating speed variable motor according to the pressure sensor.
According to the utility model discloses an among the electric pump subassembly, pressure sensor can detect the electric pump export, and the pressure of oil transfer pump entry is crossed when detecting the pressure value and crosses lowly, and the variable motor of electric pump controller control speed rotates and improves the rotational speed, and pump body rotational speed improves promptly, increases oil transfer pump fuel feeding ability, avoids taking place to lead to the engine to start the difficulty because of oil transfer pump front pressure crosses lowly. When the pressure value is detected to be too high, the electric pump controller controls the variable-speed motor to rotate to reduce the rotating speed, namely the rotating speed of the pump body is reduced, so that the problem that the pressure in front of the oil delivery pump is too high to cause abnormal opening of the common rail pipe pressure limiting valve due to pressure overrun is avoided, and the fuel system can be ensured to work in the best state all the time.
In addition, according to the utility model discloses a motor-driven pump subassembly still can have following additional technical characterstic:
in some embodiments of the present invention, the electric pump further comprises a housing, a housing chamber is provided in the housing, the pump body is provided in the housing chamber, and the outlet is provided in the housing.
The utility model discloses an in some embodiments, exit linkage has an oil pipe, oil pipe with hold the chamber intercommunication, pressure sensor set up in on the oil pipe.
In some embodiments of the present invention, the housing is provided with an inlet, the inlet is connected to an oil inlet pipe, and the oil inlet pipe is communicated with the accommodating cavity.
The utility model discloses an in some embodiments, the electric pump bottom is provided with the connecting pipe, the connecting pipe with advance oil pipe with go out oil pipe intercommunication.
In some embodiments of the invention, the electric pump controller is fixed to the rotary variable electric machine.
The utility model discloses an on the other hand has still provided a fuel oil system, fuel oil system has above-mentioned electric pump assembly.
In some embodiments of the present invention, the fuel system further comprises a fuel strainer, the electric pump of the electric pump assembly and the fuel strainer are fixed on the mounting plate.
In some embodiments of the present invention, the connecting pipe at the bottom of the electric pump is communicated with the inside of the fuel strainer.
In some embodiments of the present invention, the fuel system further comprises a fuel delivery pump, and the oil outlet pipe of the electric pump assembly is communicated with the fuel delivery pump.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:
fig. 1 schematically illustrates a schematic view of a motor-pump assembly according to an embodiment of the present invention;
fig. 2 schematically shows a schematic view of a fuel system according to an embodiment of the invention.
The reference numerals in the drawings denote the following:
1: an oil tank; 2: a fuel oil strainer; 3: an electric pump assembly; 4: an oil transfer pump; 5: a fuel fine filter; 6: an injection pump; 7: a common rail pipe; 8: an oil injector;
31: a pressure sensor; 32: an electric pump controller; 33: a variable speed motor; 34: an electric pump; 35: an oil outlet pipe.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.
Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
As shown in fig. 1, the electric pump assembly 3 in the present embodiment includes: electric pump 34, electric pump 34 includes: a pump body, a variable rotation speed motor 33, a pressure sensor 31 and an electric pump controller 32; the rotating speed variable motor 33 drives the pump body to rotate; the pressure sensor 31 is provided at the outlet of the electric pump 34; the electric pump controller 32 controls the rotation of the rotation speed variable motor 33 according to the pressure sensor 31.
Specifically, as shown in fig. 1, the outlet of the electric pump 34 is communicated with the inlet of the input pump, the pressure sensor 31 can detect the pressure at the outlet of the electric pump 34, i.e. at the inlet of the oil transfer pump 4, when it is detected that the pressure value is too low, the electric pump controller 32 controls the rotation speed variable motor 33 to rotate to increase the rotation speed, i.e. the rotation speed of the pump body, so as to increase the oil supply capacity of the oil transfer pump 4 and avoid the engine starting difficulty caused by too low pressure before the oil transfer pump 4. When detecting the pressure value when too high, the variable motor 33 of electric pump control ware 32 control rotational speed rotates and reduces the rotational speed, and pump body rotational speed reduces promptly, avoids appearing the oil transfer pump 4 preceding pressure too high, leads to the trouble that the common rail pipe pressure limiting valve opened because of the pressure transfinites unusually, can avoid the extravagant problem of unnecessary simultaneously.
It should be noted that the pressure requirement of the engine before the oil pump 4 under different working conditions can be output to the electric pump controller 32 through the ECU controller.
In some embodiments of the present invention, the electric pump 34 further comprises a housing, a containing cavity is provided in the housing, the pump body is provided in the containing cavity, and the outlet is provided on the housing.
The pressure sensor 31 can be arranged at the outlet of the shell according to requirements, and the outlet pressure of the pump body is detected.
The utility model discloses an in some embodiments, the exit linkage has oil pipe 35, oil pipe 35 with hold the chamber intercommunication, pressure sensor 31 sets up on oil pipe 35.
For the convenience of installation, the pressure sensor 31 is generally provided on the oil outlet pipe 35, and the pressure detection of the inlet of the oil feed pump 4 can be realized.
The utility model discloses an in some embodiments, be provided with the import on the casing, the access connection has into oil pipe, advances oil pipe and holds the chamber intercommunication. The oil in the oil tank 1 enters the fuel oil coarse filter 2 through the oil inlet pipe, and the filtered fuel oil enters the fuel delivery pump 4 from the oil outlet pipe 35 under the rotation of the pump body.
In some embodiments of the present invention, the bottom of the electric pump 34 is provided with a connecting pipe, which is communicated with the oil inlet pipe and the oil outlet pipe 35.
Oil enters the connecting pipe from the oil inlet pipe, enters the fuel oil coarse filter 2 from the connecting pipe for filtering, and enters the oil outlet pipe 35 from the connecting pipe after filtering.
In some embodiments of the present invention, the electric pump controller 32 is fixed to the rotary variable motor. The electric pump controller 32 can be easily mounted, and the mounting space can be saved.
The utility model discloses an on the other hand has still provided a fuel oil system, and fuel oil system has above-mentioned electric pump assembly 3.
In some embodiments of the present invention, the fuel system further includes a fuel strainer 2, and the electric pump 34 of the electric pump assembly 3 and the fuel strainer 2 are fixed on the mounting plate. The electric pump 34 and the fuel strainer 2 are fixed on the mounting plate, so that the space of the whole fuel system can be saved.
In some embodiments of the present invention, the connecting pipe at the bottom of the electric pump 34 is communicated with the inside of the fuel strainer 2. The oil of the oil inlet pipe and the oil outlet pipe 35 can be flowed into the inside of the fuel strainer 2 through the connection pipe. The connecting pipe is positioned at the top of the fuel oil coarse filter 2.
In some embodiments of the present invention, the fuel system further comprises a fuel delivery pump 4, and the oil outlet pipe 35 of the electric pump assembly 3 is communicated with the fuel delivery pump 4. The utility model discloses a fuel oil system still includes and is provided with sprayer 8 on the rail pipe 7 altogether with 4 exit linkage's of delivery pump fuel secondary filter 5, injection pump 6 and the rail pipe 7 altogether.
As shown in fig. 2, the utility model discloses an among the fuel oil system, the pressure demand before the oil transfer pump 4 of engine under different operating modes, can be through the rotational speed of ECU controller input, rail pressure and the required pressure value of parameter output such as power, in the controller of electric pump 34 is exported to the required pressure value, when the sensor detects oil transfer pump 4 entry pressure value and crosses low, electric pump controller 32 control pump body improvement rotational speed. When the inlet pressure of the fuel delivery pump 4 is too high, the electric pump controller 32 controls the pump body to rotate at a reduced speed.
The adaptability of an engine fuel system is effectively improved, meanwhile, the replacement period of the fuel filter during the operation of the whole vehicle can be greatly prolonged, and the use cost is saved for users. The existing electric pump 34 is slightly changed, a common constant-rotating-speed motor is changed into a rotating-speed variable motor 33 with an electric pump controller 32, the cost change is small, and the electric pump can be widely popularized.
To sum up, the utility model discloses an among the electric pump subassembly, pressure sensor can detect the electric pump export, and the pressure of oil transfer pump entry is crossed when detecting the pressure value and crosses lowly, and the variable motor of electric pump controller control speed rotates and improves the rotational speed, and pump body rotational speed improves promptly, increases oil transfer pump fuel feeding ability, avoids taking place to lead to the engine to start the difficulty because of oil transfer pump front pressure crosses lowly. When the pressure value is detected to be too high, the electric pump controller controls the variable-speed motor to rotate to reduce the rotating speed, namely the rotating speed of the pump body is reduced, so that the problem that the pressure in front of the oil delivery pump is too high to cause abnormal opening of the common rail pipe pressure limiting valve due to pressure overrun is avoided, and the fuel system can be ensured to work in the best state all the time.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An electric pump assembly, comprising:
an electric pump including a pump body;
the rotating speed variable motor drives the pump body to rotate;
a pressure sensor disposed at an outlet of the electric pump;
and the electric pump controller controls the rotation of the rotating speed variable motor according to the pressure sensor.
2. The electric pump assembly of claim 1, further comprising a housing having a receiving cavity disposed therein, the pump body being disposed within the receiving cavity, and the outlet being disposed on the housing.
3. The electric pump assembly of claim 2, wherein an oil outlet line is connected to said outlet port, said oil outlet line communicating with said receiving cavity, said pressure sensor being disposed on said oil outlet line.
4. The electric pump assembly as claimed in claim 3, wherein an inlet is provided on the housing, and an oil inlet pipe is connected to the inlet, and the oil inlet pipe communicates with the accommodation chamber.
5. The electric pump assembly as claimed in claim 4, wherein the electric pump is provided at a bottom thereof with a connection pipe communicating with the oil inlet pipe and the oil outlet pipe.
6. The electric pump assembly of claim 1, wherein said electric pump controller is fixed to said rotary variable electric motor.
7. Fuel system, characterized by an electric pump assembly according to any one of claims 1 to 6.
8. The fuel system as recited in claim 7, further comprising a fuel strainer, the electric pump of the electric pump assembly and the fuel strainer being secured to a mounting plate.
9. The fuel system as recited in claim 8, wherein a connection pipe at a bottom of the electric pump communicates with an inside of the fuel strainer.
10. The fuel system as recited in claim 7, further comprising a transfer pump, said electric pump assembly outlet line being in communication with said transfer pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021247466.9U CN212985411U (en) | 2020-06-30 | 2020-06-30 | Electric pump assembly and fuel system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021247466.9U CN212985411U (en) | 2020-06-30 | 2020-06-30 | Electric pump assembly and fuel system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212985411U true CN212985411U (en) | 2021-04-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021247466.9U Active CN212985411U (en) | 2020-06-30 | 2020-06-30 | Electric pump assembly and fuel system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212985411U (en) |
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2020
- 2020-06-30 CN CN202021247466.9U patent/CN212985411U/en active Active
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