CN211819750U - Fuel oil system and diesel engine with same - Google Patents
Fuel oil system and diesel engine with same Download PDFInfo
- Publication number
- CN211819750U CN211819750U CN201922488853.5U CN201922488853U CN211819750U CN 211819750 U CN211819750 U CN 211819750U CN 201922488853 U CN201922488853 U CN 201922488853U CN 211819750 U CN211819750 U CN 211819750U
- Authority
- CN
- China
- Prior art keywords
- fuel
- oil
- pump
- electric
- delivery pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The utility model belongs to the technical field of the engine, a fuel oil system and have its diesel engine is specifically proposed, the utility model discloses the fuel oil system that the first aspect provided increases the automatically controlled fuel delivery pump that receives the electrical unit control on the pipeline between fuel strainer and oil tank, increases first oil return pipeline before the oil spout pump, is equipped with on the first oil return pipeline and receives electrical unit control solenoid valve. When an engine is started for the first time or parts are replaced, air influencing the starting of a generator exists in pipelines and various devices of a fuel system, at the moment, an electric control unit is controlled by a hand or an ECU to open an electromagnetic valve and an electric oil delivery pump, the electric oil delivery pump is used for overcoming resistance to provide power for exhaust due to the resistance of the system pipelines and filter elements of a filter unit, and the air is discharged to an oil tank through a first oil return pipeline under the pumping force of the electric oil delivery pump. When the engine is started successfully, the electric fuel delivery pump and the electromagnetic valve stop working automatically, and fuel oil in front of the fuel injection pump is prevented from being consumed.
Description
Technical Field
The utility model belongs to the technical field of the engine, concretely relates to fuel oil system. The utility model discloses still relate to a diesel engine.
Background
This section provides background information related to the present disclosure only and is not necessarily prior art.
In the existing diesel engine fuel system, a mechanical pressure limiting valve exhaust system is arranged at the outlet of a fuel fine filter and is used for exhausting gas in a low-pressure pipeline of the fuel system. The opening pressure of a check valve of the exhaust system is constant, and the check valve is in a normally open state when the engine works. The check valve enables part of fuel to directly return to the oil tank from the fuel delivery pump without the fuel injection pump, so that the fuel delivery efficiency of the fuel delivery pump is low under certain conditions, even the fuel is insufficient, and the whole fuel system is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that the fuel system of diesel engine reduces the efficiency of fuel delivery pump when exhausting among the prior art at least, this purpose is realized through following technical scheme:
the utility model discloses a first aspect provides a fuel oil system for diesel engine, fuel oil system includes:
an oil tank;
the filtering unit is communicated with the oil tank and is used for filtering fuel oil in the oil tank;
the oil conveying unit is communicated with the filtering unit and is used for conveying the filtered fuel oil;
the fuel injection pump receives the filtered fuel through a first fuel pipeline;
the automatic exhaust unit comprises a first oil conveying pipeline and a first oil return pipeline of the oil tank, an electromagnetic valve, a filtering unit, an electric oil conveying pump and an electric control unit, wherein the electromagnetic valve is arranged on the first oil return pipeline, the electric oil conveying pump is arranged on a pipeline between the filtering unit and the oil tank, the electric control unit is electrically connected with the electromagnetic valve, and the electric control unit is used for controlling the electromagnetic valve and the electric oil conveying pump to start and stop.
The utility model discloses the fuel oil system that the first aspect provided increases the automatically controlled fuel delivery pump who receives the electrical unit control on the pipeline between fuel strainer and oil tank, increases first oil return pipeline before the injection pump, is equipped with on the first oil return pipeline and receives electrical unit control solenoid valve. When an engine is started for the first time or parts are replaced, air influencing the starting of a generator exists in pipelines and various devices of a fuel system, at the moment, an electric control unit is controlled by a hand or an ECU to open an electromagnetic valve and an electric oil delivery pump, the electric oil delivery pump is used for overcoming resistance to provide power for exhaust due to the resistance of the system pipelines and filter elements of a filter unit, and the air is discharged to an oil tank through a first oil return pipeline under the pumping force of the electric oil delivery pump. When the engine is started successfully, the electric fuel delivery pump and the electromagnetic valve stop working automatically, and fuel oil in front of the fuel injection pump is prevented from being consumed.
In addition, according to the utility model discloses a fuel oil system still can have following additional technical characterstic:
in some embodiments of the present invention, the filter unit includes a fuel coarse filter and a fuel fine filter.
In some embodiments of the present invention, the oil transfer unit includes a first oil transfer pump, an oil inlet of the first oil transfer pump communicates with an outlet of the coarse filter of the fuel coarse filter, and an oil outlet of the first oil transfer pump communicates with an inlet of the fine filter of the fuel fine filter.
In some embodiments of the present invention, the fuel system further comprises a second return line communicating the fuel injection pump with the fuel tank.
The utility model discloses a second aspect provides a diesel engine, diesel engine includes fuel oil system, fuel oil system is used for providing the required fuel of diesel engine work, fuel oil system does the utility model discloses the first aspect provides fuel oil system.
The utility model discloses the diesel engine that the second aspect provided have with the utility model discloses the same beneficial effect of fuel oil system that the first aspect provided.
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 shows a schematic structural view of a fuel system according to an embodiment of the present invention;
fig. 2 schematically shows a schematic structural view of a fuel system according to another embodiment of the present invention;
the reference symbols in the drawings denote the following:
10: oil tank, 20: electric fuel delivery pump, 30: filtration unit, 31: fuel strainer, 32: fuel fine filter, 40: oil transfer unit, 41: first oil delivery pump, 42: first oil delivery pipe, 50: fuel injection pump, 60: electromagnetic valve, 61: first oil return line, 62: second return line, 70: an electronic control unit;
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, 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 "second" and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, an 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 to fig. 2, a first aspect of the present invention provides a fuel system for a diesel engine, the fuel system comprising:
a fuel tank 10;
a filter unit 30 communicating with the fuel tank 10, the filter unit 30 for filtering the fuel in the fuel tank 10;
an oil delivery unit 40 in communication with the filter unit 30, the oil delivery unit 40 for delivering filtered fuel oil;
the fuel injection pump 50 is communicated with and receives the filtered fuel through the first fuel conveying pipeline 42;
the automatic exhaust unit comprises a first oil return pipeline 61 for communicating the first oil delivery pipeline 42 with the oil tank 10, an electromagnetic valve 60 arranged on the first oil return pipeline 61, an electric oil delivery pump 20 arranged on a pipeline between the filtering unit 30 and the oil tank 10, and an electric control unit 70 electrically connected with the electric oil delivery pump 20 and the electromagnetic valve 60, wherein the electric control unit 70 is used for controlling the start and stop of the electromagnetic valve 60 and the electric oil delivery pump 20.
The utility model discloses the fuel oil system that the first aspect provided increases the automatically controlled fuel delivery pump controlled by the electrical control unit 70 on the pipeline between fuel strainer 31 and oil tank 10, sets up first oil return pipeline 61 before injection pump 50, is equipped with on the first oil return pipeline 61 and receives the electrical control unit 70 control solenoid valve 60. When the engine is started for the first time or parts are replaced, air which affects the starting of the generator exists in the pipelines and various devices of the fuel system, at this time, the electromagnetic valve 60 and the electric oil delivery pump 20 are opened through the manual or ECU control electronic control unit 70, the electric oil delivery pump 20 is used for overcoming the resistance to provide power for exhaust gas due to the resistance of the system pipelines and the filter element of the filter unit 30, and the air is discharged to the oil tank 10 through the first oil return pipeline 61 under the pumping force of the electric oil delivery pump 20. When the engine is started successfully, the electric fuel delivery pump 20 and the electromagnetic valve 60 stop working automatically, so as to avoid consuming fuel before the fuel injection pump 50.
In some embodiments of the present invention, as shown in fig. 2, the filtering unit 30 includes a fuel coarse filter 31 and a fuel fine filter 32. The fuel is fully filtered by arranging the two-stage filter.
In some embodiments of the present invention, as shown in fig. 2, the oil transportation unit 40 includes a first oil transportation pump 41, an oil inlet of the first oil transportation pump 41 is communicated with the coarse filter outlet of the fuel coarse filter 31, and an oil outlet of the first oil transportation pump 41 is communicated with the fine filter inlet of the fuel fine filter 32. By providing the first fuel transfer pump 41 after the fuel strainer 31, impurities in the unfiltered fuel are prevented from affecting the operating efficiency of the fuel transfer pump.
In some embodiments of the present invention, the fuel system further comprises a second return line 62 communicating the fuel injection pump 50 with the fuel tank 10. The unused fuel in the injection pump 50 is returned to the fuel tank 10 by the provision of the second return line 62.
The utility model discloses a second aspect provides a diesel engine, and diesel engine includes fuel oil system, and fuel oil system is used for providing the required fuel of diesel engine work, and fuel oil system does the utility model discloses the fuel oil system that the first aspect provided.
The utility model discloses the diesel engine that the second aspect provided have with the utility model discloses the same beneficial effect of fuel oil system that the first aspect provided.
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 (5)
1. A fuel system for a diesel engine, comprising:
an oil tank;
the filtering unit is communicated with the oil tank and is used for filtering fuel oil in the oil tank;
the oil conveying unit is communicated with the filtering unit and is used for conveying the filtered fuel oil;
the fuel injection pump receives the filtered fuel through a first fuel pipeline;
the automatic exhaust unit comprises a first oil conveying pipeline and a first oil return pipeline of the oil tank, an electromagnetic valve, a filtering unit, an electric oil conveying pump and an electric control unit, wherein the electromagnetic valve is arranged on the first oil return pipeline, the electric oil conveying pump is arranged on a pipeline between the filtering unit and the oil tank, the electric control unit is electrically connected with the electromagnetic valve, and the electric control unit is used for controlling the electromagnetic valve and the electric oil conveying pump to start and stop.
2. The fuel system as recited in claim 1, wherein said filter unit includes a fuel coarse filter and a fuel fine filter.
3. The fuel system as recited in claim 2, wherein the fuel delivery unit comprises a first fuel delivery pump, an oil inlet of the first fuel delivery pump being in communication with a coarse filter outlet of the coarse fuel filter, an oil outlet of the first fuel delivery pump being in communication with a fine filter inlet of the fine fuel filter.
4. The fuel system of claim 1, further comprising a second return line communicating the injection pump with the tank.
5. A diesel engine comprising a fuel system for providing fuel required for operation of the diesel engine, the fuel system being as claimed in any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922488853.5U CN211819750U (en) | 2019-12-31 | 2019-12-31 | Fuel oil system and diesel engine with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922488853.5U CN211819750U (en) | 2019-12-31 | 2019-12-31 | Fuel oil system and diesel engine with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211819750U true CN211819750U (en) | 2020-10-30 |
Family
ID=73041731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922488853.5U Active CN211819750U (en) | 2019-12-31 | 2019-12-31 | Fuel oil system and diesel engine with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211819750U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113074068A (en) * | 2021-04-02 | 2021-07-06 | 浙江吉利控股集团有限公司 | Fuel supply system for vehicle, control method of fuel supply system and vehicle |
-
2019
- 2019-12-31 CN CN201922488853.5U patent/CN211819750U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113074068A (en) * | 2021-04-02 | 2021-07-06 | 浙江吉利控股集团有限公司 | Fuel supply system for vehicle, control method of fuel supply system and vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2192285B1 (en) | Fuel supply device for engine | |
| US8651089B2 (en) | Injection system for an internal combustion engine | |
| US7568474B2 (en) | Method and device for operating a diesel motor using a fuel that comprises vegetable oils or recycled vegetable oils | |
| CN206111402U (en) | Engine fuel oil system and engine | |
| CN103982348A (en) | Fuel filtration system | |
| US20080149074A1 (en) | Fuel supply device | |
| CN211819750U (en) | Fuel oil system and diesel engine with same | |
| CN110043362B (en) | Cold start system for methanol vehicle | |
| CN109642525A (en) | Fuel system for internal combustion engine | |
| CN112282955A (en) | Method, device and system for improving plateau oil supply capacity of engine | |
| EP2665916A1 (en) | Diesel fuel system with advanced priming | |
| CN211598881U (en) | Fuel system for diesel engine, diesel engine with fuel system and vehicle | |
| CN101583786B (en) | Method for testing the operation of a pressure sensing unit of an injection system of an internal combustion engine | |
| CN110735745B (en) | Automatic oil way emptying device, engineering vehicle and automatic oil way emptying method | |
| CN112211763A (en) | Fuel filter, fuel system and control method of fuel system | |
| WO2017003359A1 (en) | Fuel system for an internal combustion engine | |
| CN211598788U (en) | Closed circulation ventilation system and have its engine | |
| JP5338696B2 (en) | Fuel supply device for internal combustion engine | |
| CN115075999A (en) | Automatic drainage of water-fuel separator via downstream injection system | |
| CN112412673B (en) | Fuel system, engine and method for automatically releasing limp mode of engine | |
| CN207830014U (en) | A kind of fuel electron oil supply system on shipboard | |
| CN208106583U (en) | A kind of picking-up vehicle starter control system | |
| CN212985411U (en) | Electric pump assembly and fuel system | |
| CN218760189U (en) | Fuel control system, engine and vehicle | |
| CN111878272B (en) | Exhaust device and exhaust method for high-pressure oil pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |