CN211598881U - Fuel system for diesel engine, diesel engine with fuel system and vehicle - Google Patents
Fuel system for diesel engine, diesel engine with fuel system and vehicle Download PDFInfo
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- CN211598881U CN211598881U CN201921963343.2U CN201921963343U CN211598881U CN 211598881 U CN211598881 U CN 211598881U CN 201921963343 U CN201921963343 U CN 201921963343U CN 211598881 U CN211598881 U CN 211598881U
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Abstract
The utility model belongs to the technical field of diesel vehicles, in particular to a fuel oil system for a diesel engine, a diesel engine with the fuel oil system and a vehicle, which are provided by the utility model, the fuel oil system for the diesel engine is additionally provided with a fuel oil temperature sensor in the existing fuel oil system, and simultaneously, an electric control relief valve is additionally arranged on a common rail pipe, and the valve is controlled by an ECU and can control the rail pressure in the common rail pipe; in addition, before the return oil of the oil sprayer and the return oil of the common rail pipe are led back to the filter, the return oil enters the oil injection pump again, and the high-temperature fuel oil of the common rail pipe is returned to the filter to heat the low-temperature fuel oil, so that the problem that the fuel oil is slowly heated by a fuel oil system of the diesel automobile at low temperature is solved.
Description
Technical Field
The utility model belongs to the technical field of the diesel vehicle, concretely relates to a fuel oil system for diesel engine. The utility model discloses still relate to an engine and a vehicle.
Background
This section provides background information related to the present disclosure only and is not necessarily prior art.
The fuel oil heating system of the existing diesel oil automobile is additionally provided with a fuel oil heater on a fuel oil filter, the heater with the structure has small power and unobvious heating effect, and needs to consume a power supply of a storage battery.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem of slow heating of diesel oil heating system 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:
the fuel injection device comprises an oil tank, a filter, a fuel delivery pump, a fuel metering valve, a plunger pump, a common rail pipe and a fuel injector which are sequentially communicated through pipelines, wherein the fuel injector is provided with a first fuel return pipeline connected with a fuel inlet of the filter, and a pipeline between the fuel delivery pump and the fuel metering valve is provided with a fuel temperature sensor;
and the ECU is electrically connected with the fuel temperature sensor and the fuel metering valve and is used for adjusting the opening of the fuel metering valve.
The utility model provides a fuel oil system for diesel engine passes through fuel temperature sensor monitored control system fuel temperature, when the temperature does not reach standard, through ECU control fuel metering valve, make the fuel pump maximum capacity fuel feeding, the system rail pressure is controlled through the automatically controlled relief valve on the common rail pipe simultaneously, a large amount of high pressure fuel pass through the sprayer oil return and get into fuel filter again this moment, the temperature of oil return is very high, utilize the high temperature oil return to heat the low temperature fuel, fuel temperature rises fast in the messenger low pressure oil circuit.
In addition, according to the utility model discloses a fuel oil system for diesel engine still can have following additional technical characterstic:
the utility model discloses an in some embodiments, fuel oil system still including set up in the automatically controlled relief valve of rail pipe altogether, the export of automatically controlled relief valve through the second return oil pipe way with first return oil pipe way connection, rail pipe altogether is equipped with the rail pressure sensor, ECU with the rail pressure sensor with automatically controlled relief valve electricity is connected, is used for adjusting the aperture of automatically controlled relief valve.
In some embodiments of the present invention, the fuel system further includes a third oil return pipeline communicated with the fuel tank, an inlet of the third oil return pipeline is disposed on the pipeline between the fuel sensor and the fuel metering valve, and an overflow valve is disposed on the third oil return pipeline.
In some embodiments of the present invention, the fuel system further comprises a fuel heater disposed in the filter.
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 a fuel oil system for diesel engine of first aspect.
The utility model provides a diesel engine has the fuel oil system that can rapid heating diesel oil, and the temperature signal who receives fuel temperature sensor through ECU controls the fuel metering valve, and when the diesel oil temperature did not reach standard, furthest fuel feeding to draw the sprayer oil return to fuel filter, utilize the high temperature oil return to carry out rapid heating to diesel oil.
The third aspect of the present invention provides a vehicle, the vehicle includes a diesel engine, the diesel engine is the diesel engine of the second aspect of the present invention.
The utility model provides a diesel engine of vehicle has the fuel oil system that can rapid heating diesel oil, receives fuel temperature sensor's temperature signal through ECU and controls the fuel metering valve, when the diesel oil temperature does not reach standard, furthest fuel feeding to draw the sprayer oil return to fuel filter, utilize the high temperature oil return to carry out rapid heating to diesel oil.
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;
the reference symbols in the drawings denote the following:
10: oil tank, 11: fuel filter, 12: fuel pump, 13: fuel metering valve, 14: plunger pump, 15: common rail pipe, 16: fuel injector, 17: fuel temperature sensor, 18: rail pressure sensor, 19: an electrically controlled pressure relief valve;
20: ECU, 21: first oil return line, 22: second oil return line, 23: a third oil return line, a 24 overflow valve;
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, a first aspect of the present invention provides a fuel system for a diesel engine, the fuel system comprising:
the fuel tank 10, the filter 11, the fuel delivery pump 12, the fuel metering valve 13, the plunger pump 14, the common rail 15 and the fuel injector 16 are sequentially communicated through pipelines, the fuel injector 16 is provided with a first fuel return pipeline 21 connected with a fuel inlet of the filter 11, and a pipeline between the fuel delivery pump 12 and the fuel metering valve 13 is provided with a fuel temperature sensor 17;
the ECU (electronic control unit) 20, the ECU20 are electrically connected to the fuel temperature sensor 17 and the fuel metering valve 13, and the ECU20 is used to adjust the opening degree of the fuel metering valve 13.
The utility model provides a fuel oil system for diesel engine inhales diesel oil from oil tank 10 through fuel delivery pump 12, then diesel oil filters through filter 11 earlier, then through fuel metering valve 13 flow control, fills the pressure fluctuation that fills in common rail pipe 15 balance plunger pump 14 through plunger pump 14 pressurization again, spouts the cylinder through sprayer 16 at last, is equipped with fuel temperature sensor 17 monitored control system's before fuel metering valve 13 fuel temperature and upload and give ECU 20. When the ECU20 monitors that the fuel temperature T is less than the calibrated fuel temperature T1, the ECU20 controls the fuel metering valve 13 to enable the opening degree to reach the maximum to enable the fuel delivery pump 12 to supply fuel to the maximum, meanwhile, the system rail pressure is controlled through an electric control pressure relief valve 19 on the common rail pipe 15, at the moment, a large amount of fuel is pressurized through the plunger pump 14, the temperature is high, then a large amount of high-temperature fuel reenters the filter 11 through the fuel injector 16 and the first fuel return pipe 21, and low-temperature fuel in the filter 11 is heated by the high-temperature fuel, so that the temperature of the fuel in a low-pressure fuel passage is rapidly increased. When the system fuel temperature T is monitored to be larger than or equal to the calibrated fuel temperature T1, the ECU20 controls the opening of the fuel metering valve in a closed loop mode through a rail pressure signal of the rail pressure sensor 18, so that the rail pressure is stable, and the fuel supply of the fuel system meets the requirement of the engine.
The utility model discloses an in some embodiments, fuel oil system is still including setting up in the automatically controlled relief valve 19 of common rail pipe 15, and the export of automatically controlled relief valve 19 is connected with first oil return pipeline 21 through second oil return pipeline 22, and common rail pipe 15 is equipped with rail pressure sensor 18, and ECU20 is connected with rail pressure sensor and automatically controlled relief valve 19 electricity for adjust the aperture of automatically controlled relief valve 19. When the ECU20 monitors that the fuel temperature is lower than the calibration temperature, the ECU20 controls the opening degree of the electronic control pressure relief valve 19, high-temperature fuel in the common rail pipe 15 flows back to the filter 11 through the second oil return pipeline 22, and the low-temperature fuel in the filter 11 is heated by the high-temperature fuel.
In some embodiments of the present invention, the fuel system further includes a third oil return line 23 communicated with the fuel tank 10, an inlet of the third oil return line 23 is disposed on the line between the fuel temperature sensor 17 and the fuel metering valve 13, and an overflow valve 24 is disposed on the third oil return line 23. The third return line 23 is arranged in front of the fuel metering valve 13, so that when the fuel flow of the fuel system is regulated through the fuel metering valve 13, fuel exceeding the control flow can flow back through the third return line 23, and the overflow valve 24 is arranged so that the third return line 23 is not opened when the pressure and the flow are not equal to the overflow standard.
In some embodiments of the present invention, the fuel system further includes a fuel heater disposed in the filter 11. The fuel heater is integrated on the filter 11 to play a role in auxiliary heating, so that the fuel can quickly reach the calibration temperature at low temperature.
The utility model discloses a second aspect provides a diesel engine, diesel engine is including the fuel oil system who is used for diesel engine, and fuel oil system is used for providing the required fuel of diesel engine work, and fuel oil system does the utility model discloses a fuel oil system for diesel engine that the first aspect provided.
The utility model provides a diesel engine has the fuel oil system that can rapid heating diesel oil, can start fast when low temperature, and above-mentioned fuel oil system receives the temperature signal of fuel temperature sensor 17 through ECU20 and controls fuel metering valve 13, and when the diesel oil temperature did not reach standard, furthest fuel feeding to draw fuel filter 11 with the high temperature fuel backward flow of sprayer 16, utilize the high temperature oil return to carry out rapid heating to microthermal diesel oil.
The utility model discloses a third aspect provides a vehicle, and the vehicle includes diesel engine, and diesel engine does the utility model discloses a diesel engine that the second aspect provided.
The utility model provides a vehicle have with the utility model discloses a same useful technological effect of diesel engine that the second aspect provided, no longer give unnecessary details once more.
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 (6)
1. A fuel system for a diesel engine, the fuel system comprising:
the fuel injection device comprises an oil tank, a filter, a fuel delivery pump, a fuel metering valve, a plunger pump, a common rail pipe and a fuel injector which are sequentially communicated through pipelines, wherein the fuel injector is provided with a first fuel return pipeline connected with a fuel inlet of the filter, and a pipeline between the fuel delivery pump and the fuel metering valve is provided with a fuel temperature sensor;
and the ECU is electrically connected with the fuel temperature sensor and the fuel metering valve and is used for adjusting the opening of the fuel metering valve.
2. The fuel system for the diesel engine according to claim 1, further comprising an electronic control pressure relief valve disposed in the common rail pipe, wherein an outlet of the electronic control pressure relief valve is connected to the first oil return pipeline through a second oil return pipeline, the common rail pipe is provided with a rail pressure sensor, and the ECU is electrically connected to the rail pressure sensor and the electronic control pressure relief valve and is configured to adjust an opening degree of the electronic control pressure relief valve.
3. The fuel system for a diesel engine as recited in claim 2, further comprising a third return line communicating with said fuel tank, an inlet of said third return line being provided on a line between said fuel temperature sensor and said fuel metering valve, and an overflow valve being provided on said third return line.
4. The fuel system for a diesel engine as recited in claim 1 or 2, further comprising a fuel heater provided to said filter.
5. A diesel engine comprising a fuel system for providing fuel required for the operation of the diesel engine, the fuel system being as claimed in any one of claims 1 to 4 for a diesel engine.
6. A vehicle comprising a diesel engine according to claim 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921963343.2U CN211598881U (en) | 2019-11-13 | 2019-11-13 | Fuel system for diesel engine, diesel engine with fuel system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921963343.2U CN211598881U (en) | 2019-11-13 | 2019-11-13 | Fuel system for diesel engine, diesel engine with fuel system and vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN211598881U true CN211598881U (en) | 2020-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921963343.2U Active CN211598881U (en) | 2019-11-13 | 2019-11-13 | Fuel system for diesel engine, diesel engine with fuel system and vehicle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718786A (en) * | 2022-04-25 | 2022-07-08 | 广西玉柴机器股份有限公司 | Heating device and method for common rail system of diesel engine |
| CN114852354A (en) * | 2022-04-18 | 2022-08-05 | 中国航发沈阳发动机研究所 | Fuel oil system |
-
2019
- 2019-11-13 CN CN201921963343.2U patent/CN211598881U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114852354A (en) * | 2022-04-18 | 2022-08-05 | 中国航发沈阳发动机研究所 | Fuel oil system |
| CN114718786A (en) * | 2022-04-25 | 2022-07-08 | 广西玉柴机器股份有限公司 | Heating device and method for common rail system of diesel engine |
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