CN101493061A - Fuel pressure regulator and fuel supply device employing the regulator - Google Patents
Fuel pressure regulator and fuel supply device employing the regulator Download PDFInfo
- Publication number
- CN101493061A CN101493061A CNA2008100946997A CN200810094699A CN101493061A CN 101493061 A CN101493061 A CN 101493061A CN A2008100946997 A CNA2008100946997 A CN A2008100946997A CN 200810094699 A CN200810094699 A CN 200810094699A CN 101493061 A CN101493061 A CN 101493061A
- Authority
- CN
- China
- Prior art keywords
- fuel
- pressure chamber
- mentioned
- towards
- side valve
- 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.)
- Pending
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
The present invention provides a fuel pressure regulator, capable of restraining generation of decompression ebullience sound. The fuel pressure regulator is provided with a case composed of a casing and a cover, wherein the casing is provided with a fuel inlet from a fuel pump, the cover is provided with a fuel outlet toward a fuel tank equipped with the fuel pump; a fixed side valve unit, capable of being located in the case asway; a movable side valve unit, capable of being jointed/separated with the fixed side valve unit, and having a baffle and a valve barrel, the baffle is fixed by fixedly jointing the casing and the cover to divide the case inner into a pressure chamber and a back pressure chamber, and the valve barrel is provided with a intercommunicating pore for intercommunicating the pressure chamber and the back pressure chamber; and a spring, for conjoining the movable side valve unit and the fixed side valve unit. In the fuel pressure regulator, the intercommunicating pore toward the hatch of the pressure chamber is different from the intercommunicating pore toward the hatch of the back pressure chamber.
Description
Technical field
The present invention relates in a kind of parts that constitute following fuel supplying device fuel pressure regulation is the fuel pressure regulator of specified value, relate to the internal structure of this fuel pressure regulator in detail, wherein, above-mentioned fuel supplying device is installed in the fuel tank of vehicle etc., with the fuel forced feed in the oil sprayer of engine spray fuel.
Background technique
In order to satisfy emission regulation and to improve fuel economy, need be supplied to oil sprayer with suitable fuel quantity, make this oil sprayer with atomized spray fuel simultaneously, therefore must make the pressure of the fuel of supplying with to this oil sprayer keep constant.Wherein, the scheme that sets fuel pressure regulator at the next stage of the fuel filter that the fuel by petrolift pressurization is filtered is well-known.
An example as the structure of this fuel pressure regulator, have a kind of fuel pressure regulator that adopts following structure, it utilizes dividing plate to be divided into pressure chamber and back pressure chamber in the shell, is provided with simultaneously: movable valve body, it is fixed on this dividing plate, and has the valve opening that is communicated with between two Room; Fixed valve body, it is arranged on pressure chamber's side; And spring, it is arranged in the back pressure chamber, and movable valve body is against on the fixed valve body.In such cases, by making fuel feed pressure chamber by the petrolift pressurization, thereby on the position of the pretightening force balance of power that dividing plate is constantly moved to bear and spring owing to the fuel pressure of this pressure chamber, in other words, by making butt and separation between two valve bodies repeatedly, adjusting will keep constant to the pressure of the fuel of oil sprayer supply from fuel filter from the fuel discharge capacity of back pressure chamber.
In addition, this fuel pressure regulator constitutes by being maintained fixed the standing valve guide portion of valve body, and the pressure chamber further is divided into fuel inlet side and bulkhead sides, simultaneously both is communicated with, so realized miniaturization, parts that can be used as fuel supplying device thus are housed in the fuel tank.Therefore, by making the discharge fuel from back pressure chamber is residual fuel, directly turns back in the fuel tank, thereby compares with situation about being configured between fuel tank and the motor, can not make the heat heating of residual fuel, can be suppressed at and produce fuel vaporization or bubble in the fuel tank by motor.
Here, in the time will being expelled in the fuel tank from the residual fuel of fuel pressure regulator, the residual fuel after boosting be easy to generate bigger mobile sound when narrow stream is released into barometric pressure.This is owing to will utilize petrolift to boost to hundreds of kPas fuel, drops to directly in short distance that barometric pressure produces.Therefore, this sound that flows, the noise that promptly caused by the decompression boil when fuel pressure regulator is discharged residual fuel come into one's own especially.
Its reason is to a great extent, by recent technological innovation, and the vibrations of motor or noise is significantly reduced, and the quietness of vehicle further improves thereupon.Promptly, because this quietness significantly influences the aesthetic quality of this vehicle, so the noise when discharging for above-mentioned residual fuel is no exception, need avoid because this noise is propagated out from fuel tank, and cause the aesthetic quality to descend, promptly because driver is waited uneasiness, the unplessantness displeasure cause, and cause the travelling comfort of vehicle or merchantability to reduce.Therefore, following technology is disclosed, promptly, appending the mazy type parts that play erasure effect at the residual fuel exhaust port is baffler (for example with reference to patent documentation 1), perhaps make fuel pressure drop to the fixed restrictive valve (for example with reference to patent documentation 2) of the pressure of fuel tank by stages, thereby suppress the decompression boil of generation.
Patent documentation 1: specially permit No. 3858272 communique (～the 10 page of the 5th row of the 9th page of the 49th row, Figure 12)
Patent documentation 2: specially permit No. 3067626 communique (the 3rd page of left hurdle 12 capable～the 16 capable, Fig. 2)
Summary of the invention
In order to reduce the decompression boil, must append part as mentioned above, particularly, there is the maximization that causes regulator self, makes the act as a fuel such problem of installation deterioration of supplier of the restricted grade of layout in the fuel tank for the fuel pressure regulator of patent documentation 1.This point is necessarily improved in the fuel pressure regulator of patent documentation 2, but fixed restrictive valve is given prominence to, correspondingly cause pressure to regulate the operating difficulties of operation (the spring load adjustment after regulator is installed), if instead after pressure is adjusted operation, throttle valve is installed, then can cause by the flow path resistance in this fixed restrictive valve to cause regulating the problem that pressure raises.
After all, and though be baffler or fixed restrictive valve all owing to produced the decompression boil and just need append, therefore, the fuel pressure regulator of the generation of the boil that the objective of the invention is to obtain to suppress to reduce pressure.
According to inventor's experiment and investigation, the generation source of finding the decompression boil is the downstream part of the sealing surface (surface of contact of aforementioned fixation valve body and movable valve body) of next-door neighbour's valve cylinder.Therefore, fuel pressure regulator involved in the present invention possesses: shell, and it is made of housing and cover body, and this housing has the fuel inlet from petrolift, and this cover body has the fuel outlet towards the fuel tank that disposes above-mentioned petrolift; The fixed side valve cell, it is positioned in the above-mentioned housing swingably; Movable side valve unit, its can with said fixing side valve unit butt/separate, and have dividing plate and a valve cylinder, by with above-mentioned housing and cover body lock seaming the time, fixing this dividing plate, and will being separated into pressure chamber and back pressure chamber in the above-mentioned shell, above-mentioned valve cylinder is provided with and is used for the intercommunicating pore that is communicated with between above-mentioned pressure chamber and back pressure chamber; And spring, it makes this movable side valve unit and said fixing side valve unit butt, in this fuel pressure regulator, and the intercommunicating pore of above-mentioned valve cylinder, it differs from one another towards the opening of above-mentioned pressure chamber with towards the diameter of the opening of above-mentioned back pressure chamber.
The effect of invention
The present invention can obtain and can produce very big contribution, cheapness and small-sized fuel pressure regulator to vehicle aesthetic quality's raising as mentioned above, and its result can provide the fuel supplying device of the installation raising that makes in fuel tank.
Description of drawings
Fig. 1 is the outward appearance oblique drawing of the pressure regulator of embodiments of the present invention 1.
Fig. 2 is the exploded perspective view of Fig. 1.
Fig. 3 is the sectional drawing of Fig. 1.
Embodiment
Mode of execution 1
Fig. 1 is the outward appearance oblique drawing of the fuel pressure regulator of embodiments of the present invention 1, and Fig. 2 is the exploded perspective view of Fig. 1, and Fig. 3 is the sectional drawing of Fig. 1.
As shown in Figure 1, fuel pressure regulator (hereinafter referred to as pressure regulator) 101 from it in appearance, constitute by housing 1 and cover body 2, more particularly, lip part 1a (with reference to Fig. 2) pushing of housing 1 is inserted among the accommodation section 2a (with reference to Fig. 2) of cover body 2, and the front end 2a1 of accommodation section 2a bent riveted joint to the inside, thereby, work as shell 21 with housing 1 and cover body 2 lock seaming.On housing 1, form fuel inlet 1b respectively, on cover body 2, form fuel outlet 2b (with reference to Fig. 3), like this, make fuel as shown by arrows, flow downwards from the top on paper.In addition, fuel as known in the art, by arriving fuel inlet 1b after petrolift and fuel filter (all not shown) pressure filtration, utilize the pressure of the fuel that this pressure regulator 101 will supply with to oil sprayer (not shown) to remain specified value, its result discharges remaining fuel from fuel outlet 2b.At this moment, be installed in the not shown fuel tank owing to be equipped with the fuel supplying device of this pressure regulator 101, therefore above-mentioned " residual fuel " directly is back in the fuel tank, attracts pressurization by petrolift once more.In addition, thickly be connected with fuel supply circuit (for example fuel filter shell) liquid between fuel filter and oil sprayer, on housing 1, be equipped with O type ring 3 in order to make this pressure regulator 101.
As shown in Figure 2, in the cup-shaped portion 2c of cover body 2, the spring 4 that its inside diameter becomes fuel flow path is set, and it can not interfered with fuel outlet 2b, that is to say, utilize lug boss 2c1 and aftermentioned spring guide portion 5 (with reference to Fig. 3) on the bottom surface that is arranged on cup-shaped portion 2c that spring 4 is located.This spring 4 is via spring guide portion 5, with dividing plate 6 pretension upward on paper, but because the external diameter of dividing plate 6 and lip part 1a are about equally, so when the time with aforementioned housing 1 and cover body 2 lock seaming, this dividing plate 6 joint that also is fixed, that is to say dividing plate 6 between lip part 1a and accommodation section 2a, make shell 21 be separated to form 2 chambers thus by dividing plate 6.For these two chambers, be respectively that housing 1 side is called the pressure chamber with the upside on the paper of dividing plate 6, be that cover body 2 sides are called back pressure chamber with downside.
As shown in Figure 3, follow moving of spring guide portion 5 that the pretension by spring 4 causes in order to make dividing plate 6, and make dividing plate 6, and make above-mentioned two parts lock seaming by riveted joint etc. by spring guide portion 5 and reinforcing part (armature) 7 clampings.Here, will be pressed in the reinforcing part 7, make its surface outstanding from this reinforcing part 7 as the valve cylinder 8 of cartridge, like this, intercommunicating pore 8a by this valve cylinder 8 will be communicated with by 2 chambers that dividing plate 6 is separated to form, and specifically, makes fuel flow to back pressure chamber from the pressure chamber.In addition, the Construction integration thing with spring guide portion 5, dividing plate 6, reinforcing part 7 and valve cylinder 8 form that is to say, will be equivalent to the part of the movable valve body of patent documentation 1, is called " movable side valve unit 22 " here.
On the other hand, in housing 1, be provided with the fixed side valve cell 23 of the fixed valve body that is equivalent to patent documentation 1, and by valve spring 11 with its pretension downwards on paper, wherein, this fixed side valve cell 23 obtains rigid ball 9 and valve 10 by for example welding.That is, these two valve cells 22,23 of movable side fixed side are relatively disposed, at length say, in shell 21, with valve cylinder 8 and valve 10 orientate as make them the surface toward each other.Therefore, identical with patent documentation 1, by in engine start, fuel feed pressure chamber on the position of the power that dividing plate 6 is constantly moved to bear owing to the fuel pressure of this pressure chamber and the pretightening force balance of back pressure chamber medi-spring 4, makes thus before this and separates (driving valve) with the valve cylinder 8 of valve 10 butts (closing valve), when driving valve, fuel flows into back pressure chamber by valve cylinder 8, and discharges from fuel outlet 2b as residual fuel, thereby the pressure maintenance of the fuel that will supply with to oil sprayer is constant.
Below, be that valve cylinder 8 describes to the portion that wants of the present invention.As previously mentioned, the intercommunicating pore 8a by this valve cylinder 8 will be communicated with between pressure chamber and the back pressure chamber, and this point is identical with patent documentation 1, but in the present invention, and the shape of this intercommunicating pore is designed.That is to say that its diameter is not constant, but make towards the opening of pressure chamber, promptly and the diameter of the sealing surface of 10 on valve, than towards the opening of back pressure chamber, promptly the diameter towards the exhaust port of fuel outlet 2b is big.In other words, make valve cylinder 8 itself have throttling function, shortened and reach atmospheric distance.Like this, make the upstream side (upside on the paper) of diameter reducing part 8a1 produce back pressure, make the whole raising of pressure, make on the pressure distribution zone that is less than or equal to the fuel saturation vapor pressure thereupon and move, thereby the zone of decompression boiling reduce to take place, the generation of the boil that can suppress to reduce pressure.
Like this, be not to be conceived to utilize fixed restrictive valve (patent documentation 2) the decompression boil to be reduced by long distance, but as previously mentioned, the boil that is conceived to reduce pressure is that the tight downstream part of the sealing surface between valve cylinder and valve produces, and has successfully suppressed this decompression boil.Its result, identical with patent documentation 2, obtain a kind of small-sized and outstanding pressure regulator of supplier installation property that acts as a fuel, can improve the easness that its pressure is adjusted operation simultaneously significantly, can also realize that the cost of product self reduces.
Preferred in addition diameter reducing part 8a1 forms the rib shape, and this mode can further improve the inhibition effect.In addition, as previously mentioned, owing to make valve cylinder 8 have throttling function, so the exhaust port of valve cylinder 8 more approaches fuel outlet 2b.Therefore, the external diameter of valve cylinder 8 also being formed towards exhaust port diminishes.Like this, even movable side valve unit 22 perk obliquely can not make valve cylinder 8 and spring 4 interfere yet, can obtain stable pressure regulating performance.
Claims (3)
1. fuel pressure regulator possesses: shell, and it is made of housing and cover body, and this housing has the fuel inlet from petrolift, and this cover body has the fuel outlet towards the fuel tank that disposes above-mentioned petrolift; The fixed side valve cell, it is positioned in the above-mentioned housing swingably; Movable side valve unit, its can with said fixing side valve unit butt/separate, and have dividing plate and a valve cylinder, by with above-mentioned housing and cover body lock seaming the time, fixing this dividing plate, and will being separated into pressure chamber and back pressure chamber in the above-mentioned shell, above-mentioned valve cylinder is provided with and is used for the intercommunicating pore that is communicated with between above-mentioned pressure chamber and back pressure chamber; And spring, it makes this movable side valve unit and said fixing side valve unit butt,
It is characterized in that,
The intercommunicating pore of above-mentioned valve cylinder, it differs from one another towards the opening of above-mentioned pressure chamber with towards the diameter of the opening of above-mentioned back pressure chamber.
2. fuel pressure regulator as claimed in claim 1 is characterized in that,
Than big towards the diameter of the opening of back pressure chamber, and in the intercommunicating pore of this valve cylinder, the diameter reducing part that fades to towards the diameter of the opening of above-mentioned back pressure chamber from the diameter towards the opening of above-mentioned pressure chamber forms the rib shape towards the diameter of the opening of pressure chamber.
3. fuel supplying device possesses: petrolift, and it is pressed and delivered to the fuel in the fuel tank oil sprayer of motor via spraying pipe; Fuel filter, it filters the fuel from this petrolift ejection; And claim 1 or 2 described fuel pressure regulators, it will be adjusted to the pressure of regulation from the pressure of the fuel of above-mentioned petrolift ejection.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008011361A JP4941324B2 (en) | 2008-01-22 | 2008-01-22 | Fuel pressure regulator and fuel supply device using the same |
| JP2008011361 | 2008-01-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101493061A true CN101493061A (en) | 2009-07-29 |
Family
ID=40923825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100946997A Pending CN101493061A (en) | 2008-01-22 | 2008-05-07 | Fuel pressure regulator and fuel supply device employing the regulator |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4941324B2 (en) |
| CN (1) | CN101493061A (en) |
| TW (1) | TWI361859B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104023813A (en) * | 2011-09-29 | 2014-09-03 | 汉格斯特欧洲两合公司 | Fuel pump assembly |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5766136B2 (en) * | 2012-02-24 | 2015-08-19 | 愛三工業株式会社 | Fuel supply device |
| JP6425700B2 (en) * | 2016-10-27 | 2018-11-21 | 三菱電機株式会社 | Fuel supply system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996023569A1 (en) * | 1995-02-03 | 1996-08-08 | Nippondenso Co., Ltd. | Filter |
| DE19548167A1 (en) * | 1995-12-22 | 1997-06-26 | Bosch Gmbh Robert | Pressure control valve |
| DE19635439A1 (en) * | 1996-08-31 | 1998-03-05 | Bosch Gmbh Robert | Pressure control valve |
| JP2005139953A (en) * | 2003-11-05 | 2005-06-02 | Denso Corp | Fuel pressure control valve |
| US7146997B2 (en) * | 2004-03-29 | 2006-12-12 | Siemens Vdo Automotive Corporation | Regulator with flow diffuser |
| JP2007138903A (en) * | 2005-11-22 | 2007-06-07 | Keihin Corp | Fuel supply pressure adjusting device |
-
2008
- 2008-01-22 JP JP2008011361A patent/JP4941324B2/en active Active
- 2008-04-17 TW TW097113899A patent/TWI361859B/en not_active IP Right Cessation
- 2008-05-07 CN CNA2008100946997A patent/CN101493061A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104023813A (en) * | 2011-09-29 | 2014-09-03 | 汉格斯特欧洲两合公司 | Fuel pump assembly |
| CN104023813B (en) * | 2011-09-29 | 2016-08-17 | 汉格斯特欧洲两合公司 | Fuel pump components |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2009174338A (en) | 2009-08-06 |
| TWI361859B (en) | 2012-04-11 |
| TW200933022A (en) | 2009-08-01 |
| JP4941324B2 (en) | 2012-05-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4948775B2 (en) | Fuel supply device | |
| US7117856B2 (en) | Fuel delivery systems | |
| JP4650851B2 (en) | Fuel pressure adjusting device and fuel supply device including the same | |
| US9587603B2 (en) | Compact fuel pressure regulator | |
| WO2002016753A1 (en) | Fuel feeder | |
| US20080178845A1 (en) | Fuel injection pump | |
| US20130105009A1 (en) | Flow control valve | |
| CN101493061A (en) | Fuel pressure regulator and fuel supply device employing the regulator | |
| JP4405664B2 (en) | Diaphragm fuel pump | |
| CN100379974C (en) | Fuel feeding device and fuel filter used for the device | |
| JP2005076458A (en) | Fuel supply system | |
| US7717091B2 (en) | Fuel supply systems | |
| JP4489737B2 (en) | Fuel supply device | |
| US7909023B2 (en) | Fuel supply systems | |
| US20110186152A1 (en) | Compact Flow-Through Fuel Pressure Regulator | |
| US6269835B1 (en) | Pressure-regulating arrangement | |
| JP6225480B2 (en) | Evaporative fuel purge device | |
| CN101487432B (en) | Fuel pressure regulator and fuel supply device using the same | |
| JP2010255458A (en) | Fuel supply device | |
| JP2008121454A (en) | Fuel supply device | |
| JP5048265B2 (en) | Fuel supply module | |
| JP2001099008A (en) | Negative pressure type fuel supply device | |
| JP6962039B2 (en) | Fuel injection device | |
| JP2001099068A (en) | Vacuum type fuel supply device | |
| JP2006226223A (en) | Fuel pump module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20090729 |