CN208900259U - A kind of fuel system - Google Patents
A kind of fuel system Download PDFInfo
- Publication number
- CN208900259U CN208900259U CN201821623432.8U CN201821623432U CN208900259U CN 208900259 U CN208900259 U CN 208900259U CN 201821623432 U CN201821623432 U CN 201821623432U CN 208900259 U CN208900259 U CN 208900259U
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- fuel
- fuel filter
- oil
- filter
- pump
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Abstract
The utility model discloses a kind of fuel systems, including fuel filter and injection pump, it is provided with reversal valve and electrically operated fuel pump on the pipeline road of fuel filter and injection pump, is provided with differential pressure pickup between the oil inlet and oil outlet of fuel filter, differential pressure pickup is connected with warning device.When the pressure difference that the differential pressure pickup of fuel filter detects is more than setting pressure difference, warning device issues alarm signal, and user is reminded to maintain replacement fuel filter in time.User maintains fuel filter in the case where engine speed is zero, switches reversal valve and inverts electrically operated fuel pump, at this time, fuel oil in pipeline road is reversely delivered to fuel filter by injection pump, finally it is back in fuel tank, meanwhile, the fuel oil in fuel filter is also recycled in fuel tank.This programme realizes user and avoids the problem that fuel oil trickles pollution environment everywhere in maintenance fuel filter, so as to more rapidly dismantle fuel filter convenient for user or maintenance personal.
Description
Technical field
The utility model relates to vehicle fuel systems technology field more particularly to a kind of fuel systems.
Background technique
There is great amount of fuel oil after parking in fuel filter, when carrying out fuel filter maintenance and repair, needs to dismantle
Filter, existing scheme are to dismantle again after being vented the fuel oil in filter by discharging valve, or directly dismantle.If directly
Disassembly will lead to user or maintenance personal's the whole body diesel oil, causes user to generate and complains mood；It will be fired in filter by discharging valve
Oil emptying, one side emptying time is very long, on the other hand will lead to the fuel oil waste of releasing, while inevitably causing environment
Pollution.
Utility model content
In view of this, the fuel system can be easy to repair the purpose of this utility model is to provide a kind of fuel system
The fast quick-detach fuel filter of personnel, avoids fuel leakage and waste, avoids result in environmental pollution, to facilitate maintenance replacement combustion
Oil rectifier.
To achieve the goals above, the utility model provides following technical solution:
A kind of fuel system, including fuel filter and injection pump, the oil transportation of the fuel filter and the injection pump
It is provided with reversal valve and electrically operated fuel pump on pipeline, pressure difference biography is provided between the oil inlet and oil outlet of the fuel filter
Sensor, the differential pressure pickup are connected with warning device.
Preferably, the reversal valve is electric change valve.
Preferably, the warning device is audible alarm unit or light alarming device or display screen warning device.
Preferably, above-mentioned fuel system further include engine speed detection device and with the engine speed detection device
Connected revolving speed judges control module, and the revolving speed judges that control module is connect with the reversal valve and the electrically operated fuel pump.
Preferably, the revolving speed judges that control module is integrated in ECU.
Preferably, the oil return line of the injection pump is equipped with switch valve.
Fuel system provided by the utility model, including fuel filter and injection pump, the fuel filter and described
Reversal valve and electrically operated fuel pump are provided on the pipeline road of injection pump, between the oil inlet and oil outlet of the fuel filter
It is provided with differential pressure pickup, the differential pressure pickup is connected with warning device.
When the fuel system works normally, fuel from fuel tank is through fuel filter, to spray after pressurizeing by electrically operated fuel pump
Oil pump.When the pressure difference that the differential pressure pickup of fuel filter detects is more than setting pressure difference, warning device issues alarm signal,
User is reminded to maintain replacement fuel filter in time.User maintains fuel cleaning in the case where engine speed is zero
Device switches reversal valve and inverts electrically operated fuel pump, at this point, the fuel oil in pipeline road is reversely delivered to fuel cleaning by injection pump
Device is finally back in fuel tank, meanwhile, the fuel oil in fuel filter is also recycled in fuel tank.
Fuel oil is avoided everywhere to trickle pollution environment in maintenance fuel filter as it can be seen that this programme realizes user
Problem facilitates maintenance replacement fuel cleaning so as to more rapidly dismantle fuel filter convenient for user or maintenance personal
Device.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the course of normal operation schematic diagram of the fuel system in the utility model specific embodiment；
Fuel oil recovery principle figure when Fig. 2 is the maintenance of the fuel system in the utility model specific embodiment；
Fig. 3 is the ECU control strategy flow chart in the utility model specific embodiment.
Fig. 1 is into Fig. 2:
1- fuel tank, 2- pipeline road, 3- fuel filter, 4- reversal valve, 5- electrically operated fuel pump, 6- fine filter, 7- oil spout
Pump, 8- oil return line.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Referring to Fig.1 and 2, Fig. 1 is the course of normal operation original of the fuel system in the utility model specific embodiment
Reason figure, fuel oil recovery principle figure when Fig. 2 is the maintenance of the fuel system in the utility model specific embodiment.
The utility model provides a kind of fuel system, including fuel filter 3 and injection pump 7, fuel filter 3 and spray
Reversal valve 4 and electrically operated fuel pump 5 are provided on the pipeline road 2 of oil pump 7, between the oil inlet and oil outlet of fuel filter 3
It is provided with differential pressure pickup, differential pressure pickup is connected with warning device.
As shown in Figure 1, when the fuel system works normally, fuel from fuel tank 1 by pipeline road 2 through fuel filter 3,
Injection pump 7 is arrived after pressurizeing by electrically operated fuel pump 5, the arrow in Fig. 1 indicates the conveying direction of fuel oil, at this point, reversal valve 4 is in
Position is worked normally, i.e., permission fuel oil flows to injection pump 7 by fuel filter 3.Wherein, between electrically operated fuel pump 5 and injection pump 7
It is additionally provided with fine filter 6 on pipeline road 2, is used for further filter fuel.
As shown in Fig. 2, when the front and back pressure difference △ P that the differential pressure pickup of fuel filter 3 detects is more than setting pressure difference,
Warning device issues alarm signal, and user is reminded to maintain replacement fuel filter 3 in time.The feelings that user is zero in engine speed
Fuel filter 3 is maintained under condition, switching reversal valve 4 simultaneously inverts electrically operated fuel pump 5, at this point, fuel oil in pipeline road 2 by
Injection pump 7 is reversely delivered to fuel filter 3, is finally back in fuel tank 1, meanwhile, the fuel oil in fuel filter 3 also recycles
Into fuel tank 1.
Preferably, the oil return line 8 of injection pump 7 is equipped with switch valve.When system recycles fuel oil, oil return line 8 is disconnected
On switch valve, can make fuel oil recycling it is rapider.
Fuel oil is avoided everywhere to trickle pollution environment in maintenance fuel filter as it can be seen that this programme realizes user
Problem facilitates maintenance replacement fuel cleaning so as to more rapidly dismantle fuel filter convenient for user or maintenance personal
Device.
Preferably, reversal valve 4 is electric change valve.It is of course also possible to use air operated reversing valve or hydraulicdirectional control valve etc..
Preferably, warning device is audible alarm unit or light alarming device or display screen warning device.
Preferably, above-mentioned fuel system further includes engine speed detection device and is connected with engine speed detection device
Revolving speed judge control module, revolving speed judges that control module is connect with reversal valve 4 and electrically operated fuel pump 5.It is further preferred that turning
Speed judges that control module is integrated in ECU.Certainly, this programme individual controller can also be set realize revolving speed judgement and it is right
The control function of reversal valve 4 and electrically operated fuel pump 5.
Referring to figure 3., Fig. 3 is the ECU control strategy flow chart in the utility model specific embodiment, specific control stream
Journey is as follows:
The front and back pressure difference △ P signal that the differential pressure pickup of fuel filter will test is transferred to ECU, and ECU receives letter
After number, judge whether △ P is greater than filter end of a period pressure difference and continues to use when judging result is no；Judging result is ECU when being
It controls engine sending alarm or report failure, limit is turned round, fuel filter is maintained to remind user to replace in time with this.
For user when maintaining fuel filter, ECU receives filter maintenance, maintenance instruction, then, ECU judgement
Whether engine speed is 0, when judging result is no, issues warning note user misoperation, appearance when avoiding engine operation
Fuel oil pumpback phenomenon；Judging result is when being, ECU controls electrically operated fuel pump and switches direction of rotation, and controls commutation Vavle switching
Direction, the working oil path schematic diagram after switching as shown in Fig. 2, can be realized the recycling of filter fuel oil at this time.
This programme is in normal work low pressure oil way system fuel feeding by using the electrically operated fuel pump controlled by ECU,
When maintenance and maintenance filter, after receiving ECU signal, electrically operated fuel pump Negative selection is realized by ECU control, by anti-
The fuel oil kept in fuel filter is sucked back into fuel tank to selection, completes fuel oil recycling.Use is both facilitated by this programme
Family and maintenance personal maintain replacement fuel filter, while also saving fuel oil, in addition, trickling everywhere without fuel oil, avoid dirt
Environment is contaminated, user experience is improved.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (6)
1. a kind of fuel system, which is characterized in that including fuel filter (3) and injection pump (7), the fuel filter (3)
Reversal valve (4) and electrically operated fuel pump (5), the fuel filter are provided with on the pipeline road (2) of the injection pump (7)
(3) differential pressure pickup is provided between oil inlet and oil outlet, the differential pressure pickup is connected with warning device.
2. fuel system according to claim 1, which is characterized in that the reversal valve (4) is electric change valve.
3. fuel system according to claim 1, which is characterized in that the warning device is audible alarm unit, or
Light alarming device or display screen warning device.
4. fuel system according to claim 1, which is characterized in that further include engine speed detection device and with it is described
The connected revolving speed of engine speed detection device judges control module, and the revolving speed judges control module and the reversal valve (4)
It is connected with the electrically operated fuel pump (5).
5. fuel system according to claim 4, which is characterized in that the revolving speed judges that control module is integrated in ECU.
6. fuel system according to any one of claim 1 to 5, which is characterized in that the oil return pipe of the injection pump (7)
Road (8) is equipped with switch valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821623432.8U CN208900259U (en) | 2018-09-30 | 2018-09-30 | A kind of fuel system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821623432.8U CN208900259U (en) | 2018-09-30 | 2018-09-30 | A kind of fuel system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208900259U true CN208900259U (en) | 2019-05-24 |
Family
ID=66574793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821623432.8U Active CN208900259U (en) | 2018-09-30 | 2018-09-30 | A kind of fuel system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208900259U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110450626A (en) * | 2019-08-30 | 2019-11-15 | 湖南行必达网联科技有限公司 | Fuel feed exception emergency system, method and vehicle |
| CN112211763A (en) * | 2020-09-03 | 2021-01-12 | 潍柴动力股份有限公司 | Fuel filter, fuel system and control method of fuel system |
| CN112627956A (en) * | 2020-12-14 | 2021-04-09 | 北汽福田汽车股份有限公司 | Differential pressure pipe cleaning system of vehicle and vehicle with same |
| CN114483332A (en) * | 2022-02-24 | 2022-05-13 | 潍柴动力股份有限公司 | Gas filter element replacement reminding method |
-
2018
- 2018-09-30 CN CN201821623432.8U patent/CN208900259U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110450626A (en) * | 2019-08-30 | 2019-11-15 | 湖南行必达网联科技有限公司 | Fuel feed exception emergency system, method and vehicle |
| CN110450626B (en) * | 2019-08-30 | 2020-05-08 | 湖南行必达网联科技有限公司 | Fuel oil supply abnormity emergency system and method and vehicle |
| CN112211763A (en) * | 2020-09-03 | 2021-01-12 | 潍柴动力股份有限公司 | Fuel filter, fuel system and control method of fuel system |
| CN112627956A (en) * | 2020-12-14 | 2021-04-09 | 北汽福田汽车股份有限公司 | Differential pressure pipe cleaning system of vehicle and vehicle with same |
| CN114483332A (en) * | 2022-02-24 | 2022-05-13 | 潍柴动力股份有限公司 | Gas filter element replacement reminding method |
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