EP3027885A1 - Kraftstoffhochdruckpumpe, mit einem auslassventil - Google Patents
Kraftstoffhochdruckpumpe, mit einem auslassventilInfo
- Publication number
- EP3027885A1 EP3027885A1 EP14731265.6A EP14731265A EP3027885A1 EP 3027885 A1 EP3027885 A1 EP 3027885A1 EP 14731265 A EP14731265 A EP 14731265A EP 3027885 A1 EP3027885 A1 EP 3027885A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- fuel pump
- pressure fuel
- valve ball
- spring
- 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.)
- Granted
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 56
- 238000007789 sealing Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/46—Valves
- F02M59/462—Delivery valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/0054—Check valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/50—Arrangements of springs for valves used in fuel injectors or fuel injection pumps
Definitions
- the invention relates to a high-pressure fuel pump according to the preamble of claim 1.
- High-pressure fuel pumps in particular piston pumps for one
- Fuel system for an internal combustion engine are known from the market. Frequently such high-pressure fuel pumps comprise an inlet valve and an outlet valve, which in dependence on a control and / or in
- Dependence on a fuel pressure can open and close.
- the exhaust valve allows a pressurized fuel tank
- the exhaust valve can open.
- the invention relates to a high-pressure fuel pump, comprising an outlet valve, a valve ball, a valve spring acting on the valve ball in the closing direction, and a stop body for the valve ball with a valve body
- Stopper portion which limits the opening stroke of the valve ball, wherein the valve spring is supported on the stopper body.
- the stopper body on a recess in which the valve spring is received at least partially, and the radially inner boundary surface forms a guide for the valve spring.
- the invention has the advantage that an outlet valve of a high-pressure fuel pump has a comparatively low hydraulic adhesion of a valve element to a sealing seat, since this can be formed linear. Accordingly, a noise in an opening operation of the exhaust valve can be reduced.
- a rim of the recess facing the valve ball forms an annular stop section in the stop body. This allows a defined limit for one
- Opening movement of the valve element, whereby the function of the exhaust valve can be improved.
- a closing time of the exhaust valve as a result of the stroke limitation can be kept comparatively small and relatively constant.
- so-called "backflow losses" during an incipient suction phase of the high-pressure fuel pump wherein an already compressed to high pressure fuel from a high-pressure accumulator ("rail") can flow back into a delivery chamber of the high-pressure fuel pump can be reduced.
- a delivery rate of the high-pressure fuel pump can thus be increased.
- the stopper portion is at least approximately conical.
- the valve ball can be kept defined in an open state of the exhaust valve.
- the outlet valve is cheaper if the valve ball comprises a relatively inexpensive steel material. A comparatively expensive valve ball made of a ceramic material is therefore not required for the outlet valve according to the invention.
- valve spring is designed as a compression-loaded coil spring and has different diameters in an axial direction, and is in particular waisted.
- High-pressure fuel pump to a valve body, on which a sealing seat is formed and which has a guide collar, in which the valve ball is guided radially, wherein the guide collar, a first plurality of
- Recesses which are circumferentially - preferably evenly distributed - and arranged to form first flow channels, and wherein the stop body radially outwardly of the recess has a second plurality of recesses which are circumferentially - preferably uniformly distributed - and form second flow channels, the
- Cross-sectional areas of the second flow channels are chosen such that regardless of the radial orientation of the stopper body at least a second flow channel at least partially overlaps a first flow channel.
- the stopper body is designed as a stamped part and / or deep-drawn part.
- the stop body and / or the valve body is non-positively arranged - for example by pressing - in a housing of the exhaust valve.
- Figure 1 is a diagram for a high-pressure fuel pump of a fuel system for an internal combustion engine of a motor vehicle in a simplified axial sectional view;
- Figure 2 is an exhaust valve of the high-pressure fuel pump of Figure 1 in an axial sectional view
- FIG. 3 is a perspective view of elements of the outlet valve of FIG. 2 axially spaced apart in an assembly order (partially exploded view) in front of an opening on a housing of the high-pressure fuel pump.
- the same reference numerals are used for functionally equivalent elements and sizes in all figures, even in different embodiments.
- Figure 1 shows a simplified diagram of a high-pressure fuel pump 10 in an axial sectional view.
- the high-pressure fuel pump 10 is a
- the high-pressure fuel pump 10 has a housing 12, in whose left section in the drawing, an electromagnet 14 with a magnetic coil 16, an armature 18 and a
- Anchor spring 20 is arranged.
- the high-pressure fuel pump 10 includes a with a
- Low pressure line 22 connected to inlet 24 with an inlet valve 26, and one connected to a high pressure line 28 outlet 30 with a
- Exhaust valve 32 A connected to the high pressure line 28
- High-pressure accumulator (“rail") is not shown.
- the outlet valve 32 In an open state, the outlet valve 32 is hydraulically connected via an opening 34 to a delivery chamber 36.
- the exhaust valve 32 includes a valve ball 38 and a
- Valve spring 40 is shown only very schematically in Figure 1. Further down in Figures 2 and 3, the exhaust valve 32 will be shown and described in detail.
- the inlet valve 26 comprises a valve spring 42 and a valve body 44.
- the valve body 44 can be horizontal by means of a in the drawing
- valve needle 46 moves in Figure 2 to the left, and so the inlet valve 26 by the force of
- Valve spring 42 are closed.
- the inlet valve 26 can be forcibly opened by the force of the armature spring 20.
- a piston 48 is arranged vertically movable in the drawing. The piston 48 can be moved by means of a roller 50 from a - in this case elliptical - cam 52 in a cylinder 54.
- the cylinder 54 is in a section of the Housing 12 is formed.
- the inlet valve 26 is hydraulically connected via an opening 56 to the delivery chamber 36.
- the high-pressure fuel pump 10 delivers fuel from the inlet 24 to the outlet 30, the outlet valve 32 corresponding to a respective one
- the inlet valve 26 is at
- Figure 2 shows an axial sectional view of the exhaust valve 32, which is arranged in the housing 12 of the high-pressure fuel pump 10.
- Exhaust valve 32 is substantially rotationally symmetrical or
- Valve body 58 (in the drawing on the left), a stopper body 60 (in the drawing on the right), the axially centrally disposed between the valve body 58 and the stopper body 60 ball valve 38, and designed as a helical spring valve spring 40th
- valve spring 40 acts on the valve ball 38 in the closing direction and is received in a recess 62 of the stopper body 60. In this case, the valve spring 40 is supported on a floor (right in the drawing, without
- the boundary surface of the recess 62 forms a guide for the valve spring
- the recess 62 has a simple cylindrical cross-section.
- the bottom has an axial central opening 64, which has a smaller diameter than the valve spring 40.
- the valve spring 40 in an axial direction (continuous) different diameters and is designed here waisted.
- Stop body 60 forms an annular stop portion 66 for the valve ball 38.
- On the valve body 58 is a linear annular sealing seat
- the guide collar 70 has a first plurality of
- Recesses 72 which are arranged distributed uniformly in the circumferential direction and form first flow channels 74. In an axial region of the first flow channels 74, the guide collar 70 is corresponding to the first
- the stopper body 60 has radially on its Au outside, ie outside of the recess 62 a second plurality of recesses 76, which are arranged distributed uniformly in the circumferential direction and second
- Flow channels 78, the stopper body 60 corresponding to the second plurality of recesses 76 is designed radially symmetrical.
- the first plurality and the second plurality are different and amount to three and five, respectively, compare the following FIG. 3.
- valve body 58 and the stopper body 60 are arranged axially spaced by a small amount (without reference numeral)
- valve body 58 and the stopper body 60 are arranged without spacing axially to each other.
- the stopper body 60 and / or the valve body 58 are frictionally arranged in the housing 12 by a radially externa ßere surface of the stopper body 60 and the valve body 58 is pressed against a radially inner wall portion of the housing 12, for example. It is understood that for the arrangement of the stopper body 60 and / or the
- Valve body 58 in the housing 12 also other techniques au burling in accordance with the invention are possible.
- valve ball 38 is made of a steel material.
- Stopper 60 is made by stamping and deep drawing. Overall, the exhaust valve 32 is dimensioned such that in an open state of the exhaust valve 32, a resulting hydraulic
- Cross-sectional area is sufficiently large to promote a required amount of fuel at a relatively low hydraulic flow resistance. If, during operation of the high-pressure fuel pump 10, a fuel pressure in the delivery chamber 36 or in a region of the opening 34 is smaller than a
- Valve spring 40 the valve ball 38 is pressed in the drawing to the left against the sealing seat 68. The exhaust valve 32 is thus closed.
- the valve ball 38 can lift off from the sealing seat 68 in the drawing to the right.
- the exhaust valve 32 is thus open.
- valve ball 38 can be pressed in the drawing to the right as far as the stop portion 66. This results in a
- a dashed line 80 indicates the position of the valve ball 38 in this extreme case. It can be seen that the valve body 58 and the stopper body 60 allow a radial guidance of the valve ball 38, see also the following Figure 3.
- An arrow 82 illustrates a resulting flow of the fuel when the exhaust valve 32 is opened. The flow takes place in the drawing from left to right through the opening 34, then past the valve ball 38, then through the first flow channels 74 in the valve body 58, then through the second flow channels 78 in the stop body 60, then in the
- FIG. 3 shows a perspective view of the high-pressure fuel pump 10 or of the housing 12 together with the elements of the outlet valve 32 described in connection with FIG. 3
- valve body 58 is designed radially symmetrical in a region of the guide collar 70 and in the present case comprises three first flow channels 74, wherein for reasons of clarity, only one with a Reference number is provided.
- the stopper body 60 is likewise embodied radially symmetrically in a region of the recesses 76 and, in the present case, comprises five second flow channels 78, wherein, for reasons of
- Clarity turn only one is provided with a reference numeral.
- the cross-sectional areas of the second flow channels 78 are selected such that, irrespective of the radial orientation of the stop body 60 relative to the valve body 58, at least one of the second flow channels 78 at least partially overlaps one of the first flow channels 74.
- a radial "interference" between the first three and the five second flow channels 74 and 78 are different, so to speak.
- a total resulting hydraulic opening cross-section of the exhaust valve 32 in Essentially independent of a random radial mounting angle between the guide collar 70 and the stopper body 60th
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Check Valves (AREA)
- Safety Valves (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013215275.2A DE102013215275A1 (de) | 2013-08-02 | 2013-08-02 | Kraftstoffhochdruckpumpe, mit einem Auslassventil |
PCT/EP2014/062806 WO2015014536A1 (de) | 2013-08-02 | 2014-06-18 | Kraftstoffhochdruckpumpe, mit einem auslassventil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3027885A1 true EP3027885A1 (de) | 2016-06-08 |
EP3027885B1 EP3027885B1 (de) | 2017-11-08 |
Family
ID=50976649
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14731265.6A Active EP3027885B1 (de) | 2013-08-02 | 2014-06-18 | Kraftstoffhochdruckpumpe, mit einem auslassventil |
Country Status (6)
Country | Link |
---|---|
US (1) | US9828959B2 (de) |
EP (1) | EP3027885B1 (de) |
KR (1) | KR102179022B1 (de) |
CN (1) | CN105637212B (de) |
DE (1) | DE102013215275A1 (de) |
WO (1) | WO2015014536A1 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015220028A1 (de) * | 2015-10-15 | 2017-04-20 | Robert Bosch Gmbh | Durchflussbegrenzer für einen Injektor |
DE102016217923B3 (de) * | 2016-09-19 | 2018-02-08 | Continental Automotive Gmbh | Rückschlagventil, hochdruckführendes Bauteil und Kraftstoffhochdruckpumpe |
DE102017205949B3 (de) * | 2017-04-07 | 2018-09-27 | Continental Automotive Gmbh | Ventilanordnung für ein Kraftstoffeinspritzsystem einer Brennkraftmaschine |
CN110832188B (zh) * | 2017-07-14 | 2022-09-16 | 日立安斯泰莫株式会社 | 高压燃料泵 |
CN109386635B (zh) * | 2017-08-04 | 2019-12-06 | 大陆汽车电子(长春)有限公司 | 用于高压泵的双向阀和高压泵 |
KR101986018B1 (ko) * | 2017-09-20 | 2019-06-04 | 주식회사 현대케피코 | 고압연료펌프 |
US10808667B2 (en) * | 2018-09-27 | 2020-10-20 | Delphi Technologies Ip Limited | Fuel pump and outlet valve thereof |
DE102019201921A1 (de) * | 2019-02-14 | 2020-08-20 | Robert Bosch Gmbh | Rückschlagventil mit einer Ventilkörperführung |
TW202113267A (zh) * | 2019-09-05 | 2021-04-01 | 美商紐麥特科技公司 | 用於自儲存容器分配氣體之方法及設備 |
CN114787497B (zh) * | 2020-01-07 | 2023-11-24 | 日立安斯泰莫株式会社 | 排出阀机构及具备该排出阀机构的高压燃料供给泵 |
US11339688B2 (en) | 2020-01-29 | 2022-05-24 | Borgwarner, Inc. | Variable camshaft timing valve assembly |
CN117222795A (zh) * | 2021-03-26 | 2023-12-12 | 胡斯可国际股份有限公司 | 用于返回歧管的系统和方法 |
Family Cites Families (21)
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US3894556A (en) * | 1974-01-02 | 1975-07-15 | Lear Siegler Inc | Pressure limiting valve |
DE2941244C2 (de) * | 1979-10-11 | 1984-09-27 | Lechler Gmbh & Co Kg, 7012 Fellbach | Ventilanordnung |
DE4239362A1 (de) * | 1992-11-24 | 1994-05-26 | Teves Gmbh Alfred | Ventil, insbesondere Druckventil für eine Radialkolbenpumpe, mit wenigen Komponenten |
JP3361987B2 (ja) | 1998-02-20 | 2003-01-07 | 三菱電機株式会社 | 逆止弁およびシートバルブ |
US5967180A (en) * | 1998-03-12 | 1999-10-19 | Mclaren Automotive Group, Inc. | Check valve |
JP2000045906A (ja) | 1998-07-29 | 2000-02-15 | Mitsubishi Electric Corp | 高圧燃料ポンプ装置 |
DE19943516B4 (de) * | 1999-09-11 | 2017-01-19 | Schaeffler Technologies AG & Co. KG | Düsenventil |
IT248790Y1 (it) * | 1999-11-30 | 2003-02-20 | Elasis Sistema Ricerca Fiat | Valvola di mandata ad alta pressione per il combustibile di un motorea combustione interna. |
DE10139499C1 (de) * | 2001-08-10 | 2003-03-13 | Lucas Automotive Gmbh | Bauteilverbund, insbesondere Ventil, und Verfahren zur Herstellung desselben |
WO2006069075A2 (en) * | 2004-12-21 | 2006-06-29 | Metaldyne | Fluid jet with noise reducing sleeve |
JP2006207451A (ja) * | 2005-01-27 | 2006-08-10 | Toyota Motor Corp | 燃料ポンプ及びその燃料ポンプに備えられる吐出弁 |
JP4415929B2 (ja) * | 2005-11-16 | 2010-02-17 | 株式会社日立製作所 | 高圧燃料供給ポンプ |
JP4329755B2 (ja) * | 2005-12-16 | 2009-09-09 | トヨタ自動車株式会社 | 内燃機関の高圧燃料ポンプ |
JP2009531577A (ja) | 2006-01-31 | 2009-09-03 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | 内燃機関に燃料を供給するための高圧ポンプ |
JP4353288B2 (ja) * | 2007-08-08 | 2009-10-28 | トヨタ自動車株式会社 | 燃料ポンプ |
IT1396473B1 (it) * | 2009-03-30 | 2012-12-14 | Magneti Marelli Spa | Pompa carburante con una valvola di massima pressione perfezionata per un sistema di iniezione diretta |
JP2012184820A (ja) * | 2011-03-07 | 2012-09-27 | Mikuni Corp | 流体通路を内部に備えたハウジングへのチェックバルブの取付け手段 |
CN102102611B (zh) * | 2011-03-14 | 2014-05-28 | 福建省莆田市中涵机动力有限公司 | 高压共轨系统直列式供油泵 |
DE102011075516A1 (de) * | 2011-05-09 | 2012-11-15 | Robert Bosch Gmbh | Ventilanordnung für eine Kraftstoffhochdruckpumpe sowie Kraftstoffhochdruckpumpe |
HUE025046T2 (en) * | 2012-04-05 | 2016-01-28 | Delphi Int Operations Luxembourg Sarl | valve Assembly |
US20140311597A1 (en) * | 2013-04-17 | 2014-10-23 | Continental Automotive Systems, Inc. | Compact Fuel Pressure Regulator |
-
2013
- 2013-08-02 DE DE102013215275.2A patent/DE102013215275A1/de not_active Ceased
-
2014
- 2014-06-18 US US14/909,730 patent/US9828959B2/en active Active
- 2014-06-18 CN CN201480043668.2A patent/CN105637212B/zh active Active
- 2014-06-18 WO PCT/EP2014/062806 patent/WO2015014536A1/de active Application Filing
- 2014-06-18 EP EP14731265.6A patent/EP3027885B1/de active Active
- 2014-06-18 KR KR1020167002793A patent/KR102179022B1/ko active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO2015014536A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102013215275A1 (de) | 2015-02-05 |
CN105637212A (zh) | 2016-06-01 |
US9828959B2 (en) | 2017-11-28 |
KR20160034325A (ko) | 2016-03-29 |
WO2015014536A1 (de) | 2015-02-05 |
EP3027885B1 (de) | 2017-11-08 |
US20160169174A1 (en) | 2016-06-16 |
KR102179022B1 (ko) | 2020-11-16 |
CN105637212B (zh) | 2018-09-28 |
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