CN103321799B - A kind of oil pump systems reducing low frequency flow noise - Google Patents
A kind of oil pump systems reducing low frequency flow noise Download PDFInfo
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- CN103321799B CN103321799B CN201210079599.3A CN201210079599A CN103321799B CN 103321799 B CN103321799 B CN 103321799B CN 201210079599 A CN201210079599 A CN 201210079599A CN 103321799 B CN103321799 B CN 103321799B
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- oil
- pump
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- auxiliary feed
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- 230000000149 penetrating effect Effects 0.000 claims abstract description 30
- 239000000446 fuel Substances 0.000 claims abstract description 29
- 239000003921 oil Substances 0.000 claims description 140
- 239000000295 fuel oil Substances 0.000 claims description 26
- 239000002828 fuel tank Substances 0.000 claims description 17
- 239000011324 bead Substances 0.000 claims description 7
- 239000010705 motor oil Substances 0.000 description 5
- 238000005336 cracking Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010761 intermediate fuel oil Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The present invention relates to a kind of oil pump systems reducing low frequency flow noise, for solving the flow velocity due to oil pump oil return, producing oil pump low frequency flowing noise problem.Described oil pump systems comprises oil-storing barrel, be arranged on the oil pump in oil-storing barrel and penetrate sucking pump, and pressure-relief valve and pressure maintaining valve, described oil-storing barrel is fixed on tank bottoms, described oil pump is provided with auxiliary feed-oil mouth, described auxiliary feed-oil mouth by auxiliary feed line with penetrate sucking pump and be connected, and pressure-relief valve and pressure maintaining valve are installed, by adjusting the setting value of the closure or openness pressure of pressure-relief valve and pressure maintaining valve, making to enter the fuel pressure penetrating sucking pump is in a stable pressure range, it is stable for guaranteeing to penetrate the flow velocity that sucking pump passes through, eliminate the turbulent flow noise problem that sucking pump is penetrated in traditional oil return, effectively reduce the low frequency flow noise of oil pump.Especially to metallic oil tank, this noise reduction is more obvious.
Description
Technical field
The present invention relates to motor car engine oil supply system, be specifically related in engine fuel system, be arranged on the oil pump systems to engine continuous fuel feeding in fuel tank.
Background technique
In order to ensure that motor car engine is working properly, needing to continue to engine with fuel, oil mass unnecessary in motor being sent back to fuel tank simultaneously, therefore oil pump has been installed in fuel tank, and by the oil-feed port of oil pump to engine oil.But, when vehicle is in climbing or downslope motion, if the oil level of automotive oil tank is lower, fuel oil in fuel tank can flow to the side of fuel tank, when fuel flow direction is away from oil pump pump wicking hydraulic fluid port, oil pump is just inhaled less than fuel oil, can not ensure engine continuous fuel feeding, thus produces the problem of engine misses.Or when fuel tank is in low oil level, car is under turning waits the centrifugal action of motion, and fuel oil flows to the side of fuel tank, also can produce same problem.So general oil pump all can have an oil-storing barrel in the bottom design of fuel tank, and the oil pump pump core of oil pump is fixed in oil-storing barrel by support.Because oil-storing barrel volume for fuel tank is less, oil pump also possesses the ability of fuel feeding in oil-storing barrel simultaneously, under it is hereby ensured any operating mode, and full oil level or maximum oil level in oil-storing barrel, thus oil pump pump core can be continued to engine oil.
Fig. 1 shows traditional oil pump systems.In traditional oil pump systems, oil pump is arranged in fuel tank, and oil-storing barrel 11 is fixed on tank bottoms, and it is inner that oil pump pump core 12 is fixed on oil-storing barrel 11.Described oil pump pump core 12 is provided with an oil-feed port 13, and engine oil return enters to be integrated in by oil pump return line 14 penetrates sucking pump 15 bottom oil-storing barrel 11.Described sucking pump 15 of penetrating has three interfaces, connects the fuel tank of inner and oil-storing barrel 11 outside of return line 14, oil-storing barrel 11 respectively.
Wherein, the fuel feeding of oil-storing barrel utilizes integratedly bottom the oil return of oil pump and oil-storing barrel to penetrate sucking pump to realize.Describedly penetrate the principle of sucking pump according to Venturi effect, the oil return of oil pump is imported bottom oil-storing barrel also by one section of pipeline from the coarse to fine, to accelerate fuel flow rate, thus make fuel oil form a region of no pressure at the rear side of the outlet of penetrating sucking pump Venturi tube, and this section of vacuum is utilized to suck more fuel oil with supply to oil-storing barrel from tank bottoms.
The oil return of oil pump refers to and is supplied by oil pump pump core, the fuel feeding returned after meeting engine consumption requirement.What affect oil return flow speed stability is that the delivery rate of oil pump pump core can change along with the change of vehicle-mounted voltage because have two: one; Two is that the oil consumption of motor also can produce fluctuation along with the difference of working state.Flow velocity due to oil pump oil return is that fluctuation is uncontrollable, and flow instabilities can bring the turbulent flow noise penetrating sucking pump, and this is the main cause forming oil pump low frequency flowing noise problem.Especially, in metallic oil tank, if occur to resonate and coincidence effect with the lightweight construction cover wall of casing steel plate again, this low frequency flow noise can amplify at double, causes user to the complaint of oil pump noise.
Summary of the invention
In view of this, the object of the invention is to, a kind of oil pump systems reducing low frequency flow noise is provided, for solving the flow velocity due to oil pump oil return, producing oil pump low frequency flowing noise problem.
For achieving the above object, the present invention is by the following technical solutions:
A kind of oil pump systems reducing low frequency flow noise, described oil pump systems comprises: oil-storing barrel, oil pump and penetrate sucking pump, described oil-storing barrel is fixed on tank bottoms, described oil pump is fixed in oil-storing barrel, wherein, described oil pump systems also comprises pressure-relief valve and pressure maintaining valve, described oil pump comprises oil pump pump core, and the main oil-feed port be arranged on oil pump pump core and auxiliary feed-oil mouth, described oil pump pump core is positioned at bottom oil pump, described main oil-feed port is connected with motor, described auxiliary feed-oil mouth by auxiliary feed line with penetrate sucking pump and be connected;
Described sucking pump of penetrating is arranged in oil-storing barrel, and be provided with three interfaces, the first entrance respectively, the second entrance and penetrate sucking pump outlet, described first entrance is connected with auxiliary feed-oil mouth by auxiliary feed line, described second entrance is communicated with fuel tank through oil-storing barrel, described in penetrate sucking pump and export and be arranged in oil-storing barrel;
Described pressure-relief valve is arranged on the auxiliary feed-oil mouth place of oil pump, and described pressure maintaining valve is arranged on the first access point penetrating sucking pump, by the setting value of closure or openness pressure of both adjustment, makes to enter the fuel pressure penetrating sucking pump and is in a stable pressure range.
Further, described auxiliary feed-oil mouth is positioned at pump core top.
Further, when the fuel pressure that oil pump pumps is no more than the setting value of pressure-relief valve, described pressure-relief valve is held open, and fuel oil is sent to by auxiliary feed-oil mouth and penetrates sucking pump, otherwise pressure-relief valve closes; When the fuel pressure from auxiliary feed-oil mouth exceeds the setting value of pressure maintaining valve, described pressure maintaining valve can be opened, and fuel oil is entered by the first entrance and penetrates sucking pump, otherwise pressure maintaining valve remains closed, and the setting value of described pressure-relief valve is slightly larger than the setting value of pressure maintaining valve.
Further, described pressure-relief valve and pressure maintaining valve are made up of spring and bead, bead can be made to move by the flexible of spring, and then pressure-relief valve described in closure or openness and pressure maintaining valve.
Further, described pressure-relief valve and pressure maintaining valve are installed by the mode that structure is spacing.
As seen from the above technical solution, oil pump systems provided by the invention, the oil return of motor is directly got back in oil-storing barrel by pipeline, is not connected to and penetrates sucking pump, avoids the turbulent flow noise that sucking pump is penetrated in the unstable oil return brought of return pressure.In addition, oil pump pump core is provided with auxiliary feed-oil mouth, described auxiliary feed-oil mouth is connected to the first entrance penetrating sucking pump, simultaneously, the pressure-relief valve penetrating the pressure maintaining valve of sucking pump oral area and the auxiliary feed-oil mouth of oil pump pump core stabilizes the entrance fuel pressure penetrating sucking pump, is penetrating the constant pressure difference in sucking pump two ends and under penetrating the constant sectional area condition of sucking pump, and it is stable for guaranteeing to penetrate the flow velocity that sucking pump passes through, eliminate the turbulent flow noise problem that sucking pump is penetrated in traditional oil return, effectively reduce the low frequency flow noise of oil pump.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of oil pump systems in prior art;
Fig. 2 is the schematic diagram of oil pump systems provided by the invention.
Embodiment
Below with reference to accompanying drawing, the present invention is described in detail, but the present invention is not therefore subject to any restriction.
As shown in Figure 2, the invention provides a kind of oil pump systems reducing low frequency flow noise, described oil pump systems comprises: oil-storing barrel 21, oil pump, penetrate sucking pump 25, pressure-relief valve 26 and pressure maintaining valve 27.Wherein, described oil-storing barrel 21 is fixed on tank bottoms, during to ensure fuel tank low oil level, can be drawn onto oil bottom oil-storing barrel 21, guarantees the low oil level performance of oil pump.Described oil pump is fixed in oil-storing barrel 21, comprises oil pump pump core 22, and the main oil-feed port 23 be arranged on oil pump pump core 22 and auxiliary feed-oil mouth 24.Described oil pump pump core 22 is positioned at oil-storing barrel 21, and its means of fixation in oil-storing barrel 21 can be same as the prior art, and the mode as by support installing is fixed.Described oil pump pump core 22 is positioned at bottom oil-storing barrel 21, to suck oil-storing barrel intermediate fuel oil, and is sent by main oil-feed port 23 and auxiliary feed-oil mouth 24.Described main oil-feed port 23 is connected with motor, described auxiliary feed-oil mouth 23 by auxiliary feed line 31 with penetrate sucking pump 25 and be connected.Preferably, described main oil-feed port 23 and auxiliary feed-oil mouth 24 are arranged on the top of oil pump pump core 22.
Described sucking pump 25 of penetrating is arranged in oil-storing barrel 21 equally, and its mounting type can be same as the prior art.Described sucking pump 25 of penetrating is provided with three interfaces, be respectively the first entrance 28, second entrance 29 and penetrate sucking pump outlet 30.Wherein, described first entrance 28 is connected with auxiliary feed-oil mouth 24 by auxiliary feed line 31, described second entrance 29 is communicated with fuel tank through oil-storing barrel 21, to draw the fuel oil in fuel tank, describedly penetrate sucking pump outlet and 30 be arranged in oil-storing barrel 21, the fuel oil from the first entrance 28 and the second entrance 29 is sent into oil-storing barrel 21.Describedly penetrate the principle that sucking pump 25 utilizes Venturi effect, fuel oil from auxiliary feed line 31 enters penetrates sucking pump 25, and by one section of pipeline from the coarse to fine, to accelerate fuel flow rate, make fuel oil form a region of no pressure penetrating between sucking pump outlet 30 and entrance, and then utilize this section of vacuum to suck more fuel oil supply to oil-storing barrel 21 from tank bottoms.
Described pressure-relief valve 26 is arranged on the position at auxiliary feed-oil mouth 24 place of pump core 22, and described pressure maintaining valve 27 is arranged on the position at the first entrance 28 place penetrating sucking pump 25.Wherein, described pressure-relief valve 26 can ensure can by auxiliary feed-oil mouth 24 when fuel pressure is less than certain value, particularly, when the fuel pressure that oil pump pumps is no more than the setting value of pressure-relief valve 26, described pressure-relief valve 26 is held open, fuel oil is sent to by auxiliary feed-oil mouth 24 and penetrates sucking pump 25, otherwise pressure-relief valve 26 closes.Described pressure maintaining valve 27 can ensure can by the first entrance 28 when fuel pressure is greater than certain value, particularly, when the fuel pressure from auxiliary feed-oil mouth 24 exceeds the setting value of pressure maintaining valve 27, described pressure maintaining valve 27 can be opened, fuel oil is entered by the first entrance 28 and penetrates sucking pump 25, otherwise pressure maintaining valve 27 remains closed.Like this, by the setting value of the closure or openness pressure of both adjustment, can make to enter into by auxiliary feed-oil mouth 24 fuel oil penetrating sucking pump 25 and remain in certain pressure range.
Those skilled in the art it will be appreciated that, pressure-relief valve 26 herein and pressure maintaining valve 27 can be the most basic spring loaded pressure valves, such as be made up of spring and bead, spring is fixed, auxiliary feed-oil mouth 24 or the first entrance 28 is withstood by bead, when oil pressure is greater than or less than the setting value of spring, removed by the flexible bead that makes of spring, and then auxiliary feed-oil mouth or the first entrance are opened.Certainly, art technology people easily expect, can also be exchanged by the mounting point of adjustment by pressure-relief valve 26 and pressure maintaining valve 27, make fuel oil in pump core 23 when being greater than certain pressure, auxiliary feed-oil mouth 24 can be passed through, when being less than certain pressure, can the first entrance 28 be passed through, thus make to enter penetrate sucking pump 25 fuel pressure keep within the specific limits.
Described pressure-relief valve 26 and pressure maintaining valve 27 can have multiple at the mounting type at auxiliary feed-oil mouth 24 place and the first entrance 28 place, as by structure limit mounting, it should be understood that, the mounting type herein mentioned is not limited to structure limit mounting, other installation form is also admissible, and is also that those skilled in the art are easy to expect.
The type of flow of oil pump systems intermediate fuel oil provided by the invention is as shown in the direction of arrow in Fig. 2.Oil pump pump core 22 sucks fuel oil in oil-storing barrel, by main oil-feed port 23 to engine oil, by auxiliary feed-oil mouth 24 to penetrating sucking pump 7 fuel feeding, when the pressure of auxiliary feed-oil mouth 23 reaches the setting value of pressure maintaining valve 26, pressure maintaining valve 26 is opened, and is sent to by fuel oil and penetrates sucking pump, penetrates sucking pump 25 work to start.When fuel oil is by penetrating sucking pump 25, utilize the principle of Venturi effect, the fuel oil in fuel tank is drawn in oil-storing barrel 21.When pressure fuel pump exceedes the setting value of pressure-relief valve 27, pressure-relief valve 27 closes, and fuel oil is pumped by main oil-feed port 23.
In the oil pump systems of said structure, auxiliary feed-oil mouth 24 is provided with a pressure-relief valve 27, penetrates sucking pump ingress and is provided with pressure holding valve 26, and the cracking pressure of pressure-relief valve 27 is slightly larger than the cracking pressure of pressure holding valve 26.Poor by the cracking pressure optimizing and revising pressure-relief valve 27 and pressure holding valve 26, the working pressure of penetrating the fuel oil of sucking pump 25 entrance is limited in a rational pressure range, thus makes the fuel inlet pressure penetrating sucking pump 25 relatively stable.Under the underfed operating modes such as oil pump has just started, the fuel pressure arriving pressure maintaining valve does not reach the setting cracking pressure of pressure maintaining valve 26, and pressure maintaining valve 26 remains closed, and penetrates sucking pump 25 not work, therefore can not turbulization noise.
When oil pump normally works, auxiliary feed-oil mouth 24 stablizes enough fuel feeding under the acting in conjunction of pressure-relief valve 27 and pressure maintaining valve 26.In addition, arrange in oil-storing barrel 21 owing to penetrating sucking pump outlet 30, be communicated with oil-storing barrel 21, therefore the pressure penetrating sucking pump outlet 30 is also relatively-stationary, therefore, penetrate sucking pump inlet/outlet two ends and can hold certain pressure difference, and the sectional area penetrating sucking pump 25 is fixing, so the flow velocity penetrating the fuel oil in sucking pump 25 is metastable, eliminate owing to penetrating sucking pump 25 flow velocity or pressure changes the turbulent flow noise brought.This by oil pump initiatively fuel feeding penetrate the low oil level service behaviour that sucking pump 25 both ensure that oil pump, again reduce the low frequency flow noise of oil pump entirety.Especially to metallic oil tank, this noise reduction is more obvious.The oil return of motor is directly got back in oil-storing barrel 21 by pipeline, is not connected to and penetrates sucking pump 25, avoids the turbulent flow noise penetrating sucking pump 25 that return pressure instability is brought.
Although be described an embodiment of the invention above; but under the prerequisite not departing from the technology of the present invention theme; can change the present invention according to multiple design, it should be understood that this change is still included in protection scope of the present invention.
Claims (5)
1. one kind is reduced the oil pump systems of low frequency flow noise, described oil pump systems comprises: oil-storing barrel, oil pump and penetrate sucking pump, described oil-storing barrel is fixed on tank bottoms, described oil pump is fixed in oil-storing barrel, it is characterized in that, described oil pump systems also comprises pressure-relief valve and pressure maintaining valve, described oil pump comprises oil pump pump core, and the main oil-feed port be arranged on oil pump pump core and auxiliary feed-oil mouth, described oil pump pump core is positioned at bottom oil pump, described main oil-feed port is connected with motor, described auxiliary feed-oil mouth by auxiliary feed line with penetrate sucking pump and be connected;
Described sucking pump of penetrating is arranged in oil-storing barrel, and be provided with three interfaces, the first entrance respectively, the second entrance and penetrate sucking pump outlet, described first entrance is connected with auxiliary feed-oil mouth by auxiliary feed line, described second entrance is communicated with fuel tank through oil-storing barrel, described in penetrate sucking pump and export and be arranged in oil-storing barrel;
Described pressure-relief valve is arranged on the auxiliary feed-oil mouth place of oil pump, and described pressure maintaining valve is arranged on the first access point penetrating sucking pump, by the setting value of closure or openness pressure of both adjustment, makes to enter the fuel pressure penetrating sucking pump and is in a stable pressure range.
2. oil pump systems as claimed in claim 1, it is characterized in that, described auxiliary feed-oil mouth is positioned at pump core top.
3. oil pump systems as claimed in claim 2, it is characterized in that, when the fuel pressure that oil pump pumps is no more than the setting value of pressure-relief valve, described pressure-relief valve is held open, and fuel oil is sent to by auxiliary feed-oil mouth and penetrates sucking pump, otherwise pressure-relief valve closes; When the fuel pressure from auxiliary feed-oil mouth exceeds the setting value of pressure maintaining valve, described pressure maintaining valve can be opened, and fuel oil is entered by the first entrance and penetrates sucking pump, otherwise pressure maintaining valve remains closed, and the setting value of described pressure-relief valve is slightly larger than the setting value of pressure maintaining valve.
4. oil pump systems as claimed in claim 3, it is characterized in that, described pressure-relief valve and pressure maintaining valve are made up of spring and bead, are moved by the flexible bead that makes of spring, and then pressure-relief valve described in closure or openness and pressure maintaining valve.
5. oil pump systems as claimed in claim 4, it is characterized in that, described pressure-relief valve and pressure maintaining valve are installed by the mode that structure is spacing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210079599.3A CN103321799B (en) | 2012-03-22 | 2012-03-22 | A kind of oil pump systems reducing low frequency flow noise |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210079599.3A CN103321799B (en) | 2012-03-22 | 2012-03-22 | A kind of oil pump systems reducing low frequency flow noise |
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| Publication Number | Publication Date |
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| CN103321799A CN103321799A (en) | 2013-09-25 |
| CN103321799B true CN103321799B (en) | 2015-09-16 |
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| CN201210079599.3A Expired - Fee Related CN103321799B (en) | 2012-03-22 | 2012-03-22 | A kind of oil pump systems reducing low frequency flow noise |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104712473B (en) * | 2013-12-12 | 2019-02-15 | 大陆汽车电子(芜湖)有限公司 | Fuel service system and corresponding automobile |
| CN104533497B (en) * | 2014-12-23 | 2017-03-15 | 中煤北京煤矿机械有限责任公司 | Column hydraulic system with auxiliary liquid feeding pipeline |
| CN115750330B (en) * | 2022-11-22 | 2024-09-06 | 重庆长安汽车股份有限公司 | Method for optimizing transmission oil pump howling noise |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300680A (en) * | 1999-12-22 | 2001-06-27 | 罗伯特·博施有限公司 | Automotive fuel supply assembly |
| CN101925483A (en) * | 2008-01-23 | 2010-12-22 | 罗伯特·博世有限公司 | Device for mounting delivery assembly |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10319660B4 (en) * | 2003-05-02 | 2018-04-19 | Robert Bosch Gmbh | Device for conveying fuel from a reservoir to an internal combustion engine |
| JP2006266229A (en) * | 2005-03-25 | 2006-10-05 | Hitachi Ltd | Fuel supply valve for jet pump and valve unit |
| JP2009144542A (en) * | 2007-12-12 | 2009-07-02 | Aisan Ind Co Ltd | Fuel feeding device |
| JP5384380B2 (en) * | 2010-01-27 | 2014-01-08 | 愛三工業株式会社 | Aspirator and fuel supply device equipped with aspirator |
-
2012
- 2012-03-22 CN CN201210079599.3A patent/CN103321799B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300680A (en) * | 1999-12-22 | 2001-06-27 | 罗伯特·博施有限公司 | Automotive fuel supply assembly |
| CN101925483A (en) * | 2008-01-23 | 2010-12-22 | 罗伯特·博世有限公司 | Device for mounting delivery assembly |
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| CN103321799A (en) | 2013-09-25 |
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