EP2207955A1 - Kraftstoffüberströmventil für eine kraftstoffeinspritzeinrichtung und kraftstoffeinspritzeinrichtung mit kraftstoffüberströmventil - Google Patents
Kraftstoffüberströmventil für eine kraftstoffeinspritzeinrichtung und kraftstoffeinspritzeinrichtung mit kraftstoffüberströmventilInfo
- Publication number
- EP2207955A1 EP2207955A1 EP08848181A EP08848181A EP2207955A1 EP 2207955 A1 EP2207955 A1 EP 2207955A1 EP 08848181 A EP08848181 A EP 08848181A EP 08848181 A EP08848181 A EP 08848181A EP 2207955 A1 EP2207955 A1 EP 2207955A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- fuel
- valve member
- pressure
- region
- 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 97
- 238000002347 injection Methods 0.000 title claims abstract description 23
- 239000007924 injection Substances 0.000 title claims abstract description 23
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 239000008141 laxative Substances 0.000 claims 1
- 230000002475 laxative effect Effects 0.000 claims 1
- 239000002828 fuel tank Substances 0.000 description 6
- 238000013016 damping Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002245 particle Substances 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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
- F02M37/0023—Valves in the fuel supply and return system
- F02M37/0029—Pressure regulator in the low pressure fuel system
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7837—Direct response valves [i.e., check valve type]
- Y10T137/7847—With leak passage
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7837—Direct response valves [i.e., check valve type]
- Y10T137/785—With retarder or dashpot
Definitions
- the invention is based on a fuel overflow valve for a
- Fuel injection device and a fuel injection device with fuel overflow valve according to the preamble of claim 1 and of claim 9.
- Fuel injection device is known from DE 100 57 244 Al. This fuel spill valve serves to limit the pressure in a low-pressure region of the fuel injection device.
- the fuel overflow valve has a valve housing in which a valve member is arranged to be liftable. Through the valve member is the connection of an inlet of the lifting movement of the
- the fuel injection device has a high-pressure pump through which fuel is conveyed under high pressure at least indirectly, for example via a reservoir, to at least one injector.
- a feed pump delivers fuel to the high-pressure pump.
- the high pressure pump has at least one in a drive region arranged drive in a lifting movement driven pump piston.
- the low-pressure region of the fuel injection device extends between the feed pump and the high-pressure pump and in this there is a low pressure generated by the feed pump.
- the low-pressure region is connected to the drive region of the high-pressure pump.
- the volume of the drive range changes, since the outward stroke of the pump piston increases the volume of the drive portion and the inward stroke of the pump piston decreases the volume of the drive portion. This creates pressure fluctuations in the drive area. Especially with a
- High pressure pump with only one pump piston cause relatively high pressure fluctuations.
- pressure fluctuations throughout the low pressure range are generated, which may affect the function of the fuel injection device.
- the valve member of the fuel spill valve must be able to perform a large stroke, which also requires a large stroke of the valve spring. This in turn means that a large installation space for the valve spring is required and this is heavily loaded and therefore can break.
- the fuel spill valve according to the invention with the features according to claim 1 has the advantage that the valve member can perform a larger stroke independently of the valve spring, whereby a better balance of the pressure fluctuations is possible.
- the valve spring needs to perform only a limited stroke to move the valve member in its closed position, whereby the space of the Kraftstoffüberströmventils and the load of the valve spring can be kept low.
- the embodiment according to claim 2 allows in a simple manner compared to the valve spring stroke enlarged stroke of the valve member. Due to the construction according to claim 3 damping of the lifting movement of the support member and thus the valve member and the valve spring is achieved, whereby the load on the valve spring is reduced.
- the embodiment of claim 5 also allows damping of the lifting movement of the support member and thus the valve member and the valve spring.
- the training according to claim 7 or 8 allows without changes to the valve housing a two-stage design of the
- FIG. 1 shows a fuel injection device in a simplified schematic representation
- Figure 2 shows a fuel overflow valve of the fuel injection device according to a first embodiment in the closed state in a longitudinal section with a valve member in a first position
- Figure 3 the
- FIG. 1 shows a fuel injection device for an internal combustion engine.
- the fuel injection device has a feed pump 10, which draws fuel from a fuel tank 12 and the suction side of a
- High pressure pump 14 promotes. From the feed pump 10, the fuel is compressed to a delivery pressure of, for example, about 4 to 6 bar.
- the feed pump 10 may be driven electrically or mechanically.
- a fuel metering device 16 may be arranged, through which the of the High pressure pump 14 sucked and funded under high pressure fuel quantity can be variably adjusted.
- the fuel metering device 16 may be a proportional valve that can set different flow cross sections, or a clocked valve and is controlled mechanically or electrically by an electronic control device 17.
- the high-pressure pump 14 has a housing 18 in which a rotationally driven drive shaft 20 is arranged in an interior 19.
- the interior 19 of the housing 18 with the drive shaft 20 forms a drive region of the
- High pressure pump 14 The drive shaft 20 has at least one cam 22 or eccentric, wherein the cam 22 may be formed as a multiple cam.
- the high-pressure pump has at least one or more pump elements 24, each having a pump piston 26, which is indirectly driven by the cam 22 of the drive shaft 20 in a lifting movement in at least approximately radial direction to the axis of rotation of the drive shaft 20.
- the pump piston 26 is tightly guided in a cylinder bore 28 and defines with its side facing away from the drive shaft 20 a pump working chamber 30.
- the pump working chamber 30 has a connection with the inlet valve 32 opening into the pump working chamber 30
- the pump working chamber 30 also has, via an outlet valve 34 opening out of the pump working chamber 30, a connection to an outlet, which is connected, for example, to a high-pressure accumulator 110.
- a high-pressure accumulator 110 One or preferably a plurality of injectors 120 arranged on the cylinders of the internal combustion engine are connected to the high-pressure accumulator 110, through which fuel is injected into the cylinders of the internal combustion engine.
- the high pressure accumulator 110 may also be omitted, the high pressure pump 14 is then connected to the injectors 120 via hydraulic lines.
- the pump piston 26 moves into the interior space 19 and sucks fuel from the feed from the feed pump 10 into the pump working space 30 via the open inlet valve 32.
- the pump piston 26 moves out of the interior 19 and delivers fuel under high pressure from the pump working chamber 30 via the open outlet valve 34 into the high-pressure accumulator 110 or to the injectors 120.
- the region between the feed pump 10 and the fuel metering device 16 forms a low-pressure region in which the pressure generated by the feed pump 10 prevails.
- a fuel overflow valve 36 is provided, by which the pressure in the low-pressure region is limited. The fuel spill valve 36 opens when the pressure in the low pressure region exceeds its opening pressure and over the open
- Kraftstoffüberströmventil 36 the funded by the pump 10, but not sucked by the high-pressure pump 14 amount of fuel is diverted into a discharge area, which is, for example, a return 11 to the fuel tank 12.
- the fuel spill valve 36 includes a tubular valve housing 38 that includes a smaller diameter tubular portion 39 and a larger diameter tubular portion 40.
- valve housing 38 is slidably guided in a longitudinal bore 41 a piston-shaped valve member 42 slidably.
- at least one opening 43 is provided, which connects the longitudinal bore 41 with the outer jacket of the portion 39.
- the opening 43 is preferably formed as a bore, wherein, for example, two diametrically opposite holes 43 are provided.
- the longitudinal bore 41 with a discharge area, for example, a return to the fuel tank 12 connectable.
- the pressure prevailing in the low-pressure region acts via its open end also in the longitudinal bore 41 of the valve housing 38 and thus on the end face of the
- Valve member 42 The open end of the longitudinal bore 41 thus forms an inlet from the low pressure area in the Kraftstoffüberströmventil 36.
- the valve member 42 covers the openings 43, the inlet, so the low pressure region is separated from the discharge area and when the valve member 42, the openings 43 at least partially releases, so the inlet, so the low pressure area, with connected to the discharge area.
- the valve member 42 thus forms with the openings 43 a slide valve.
- a filter screen 44 can be arranged on the valve housing 38, by which it is prevented that dirt particles can enter the longitudinal bore 41 from the low-pressure region.
- the filter screen 44 can by means of an annular
- Fastener 45 may be fixed to the valve housing 38, wherein the fastener may be connected, for example, by a flange with the valve housing 38.
- a valve spring 48 is arranged, which acts via a support member 50 on the valve member 42.
- the support member 50 is cup-shaped, with the bottom 52 facing the valve member 42 and the open side facing away from the valve member 42.
- the support member 50 is slidably guided in the longitudinal bore 46 and projects into this from the open side thereof designed as a helical compression spring valve spring 48, which rests against the bottom 52.
- the valve member 42 remote from the end of the longitudinal bore 46 of the valve housing 38 is closed by means of an insert member 54, which also serves as a support for the valve spring 48.
- the insert 54 may be like that
- Support member 50 may be cup-shaped, with its open end facing the valve member 42 and the valve spring 48 projects into the insert 54 and is supported on the bottom thereof.
- the insert 54 is fixed in the longitudinal bore 46, for example, pressed into this.
- the support member 50 and / or the insert 54 may be formed as a sheet metal part.
- the support member 50 is not connected to the valve member 42 but comes only by the action of the valve spring 48 on the valve member 42 with its bottom 52 to the plant.
- the support member 50 can perform a maximum stroke towards the valve member 42, which is limited by abutment of the support member 50 at an annular shoulder 56 formed at the transition from the longitudinal bore 46 to the smaller longitudinal bore 41 in diameter.
- In the bottom 52 of the support member 50 there is at least one large-section opening 58.
- the Longitudinal bore 46 can be connected via at least one opening 62 opening onto the outer jacket of section 40 of valve housing 38 to a relief region, which can be, for example, a return to fuel tank 12.
- a relief region which can be, for example, a return to fuel tank 12.
- Relief area is connected.
- Flow cross-section is connected to the discharge area or is separated from this.
- the fuel spill valve 36 with the valve housing 38, the valve member 42, the valve spring 48, the support member 50 and the insert member 54 and the
- Filter screen 44 forms a preassembled module which is inserted into a receiving housing 70.
- the receiving housing 70 may be a separate housing or a part of the housing 18 of the high-pressure pump 14.
- valve member 42 The length of the valve member 42 and the position of the annular shoulder 56 in the valve housing 38 to limit the stroke of the support member 50 are coordinated so that the valve member 42 at the voltage applied to the annular shoulder 56 support member 50, the openings 43 just covers and thus the connection of the low pressure area separates the discharge area.
- the valve member 42 is shown in Figure 2. Starting from this position, the valve member 42 can move even further towards the open end of the longitudinal bore 41, wherein the valve member 42 is no longer in contact with the support member 50 and the valve spring 48 thus no longer acts on the valve member 42. The valve member 42 is thus free to move in the longitudinal bore 41 according to the difference of acting on one end face pressure in the low pressure region and acting on the other end face pressure in the cylinder bore 46.
- valve member 42 By the valve spring 48, the valve member 42 can be moved to its closed position and Independently of the valve spring 48, the valve member 42 beyond its closed position still another run further stroke, which may be limited, for example by the filter screen 44 or the fastener 45, to prevent the valve member 42 moves out of the longitudinal bore 41 out. In this end position, the valve member 42 is shown in Figure 3.
- the low-pressure region is separated from the relief region.
- valve member 42 is displaced against the force of the valve spring 48 in the longitudinal bore 41 so that the openings 43 are controlled by the valve member 42 and the low-pressure region is connected to the discharge area, so that from the low-pressure fuel into the discharge area can flow out.
- valve member 42 can nevertheless carry out a further stroke towards the open end of the longitudinal bore 41 and thus at least partially compensate for pressure and volume fluctuations in the low-pressure region.
- the stroke that the support element 50 and the valve spring 48 perform is smaller than the possible stroke of the valve member 42. This leads to lower loads on the valve spring 48, which can be dimensioned correspondingly weaker.
- valve spring 48 is preferably not yet compressed to block.
- the at least one opening 58 in the bottom 52 of the support member 50 it is ensured that the valve member 42 can be easily detached from the support member 50 and again come to rest on this.
- the at least one opening 60 in the support member 50 a pressure equalization between the two sides of the support member 50 is ensured so that it is in the fuel-filled Can move longitudinal bore 46.
- a damping of the ⁇ réelleshubiolo of the valve member 42 and the support member 50 is also achieved, whereby the load of the valve spring 48 is reduced, since the opening stroke by the building up in the longitudinal bore 46
- FIG. 5 shows the fuel overflow valve 36 according to a second exemplary embodiment, in which the latter opens in two stages and controls two connections of the low-pressure region.
- valve member 142 is formed identically as in the first embodiment. Only the valve member 142 is deviating from the first embodiment, but the outer dimensions of the valve member 142, ie diameter and length, are identical to the first embodiment. Deviating from the first embodiment, the valve member 142 is hollow and has a blind bore 176 extending from its end facing away from the valve spring 48, wherein the bottom 178 of the valve member 142 coming to rest on the support element 50 is designed to be closed. Near the closed end of the valve member
- the 142 is provided on this at least one opening 180, for example in the form of a bore, through which the blind bore 176 is connected to the outer jacket of the valve member 142.
- the opening 180 is preferably designed as a throttle bore with a defined cross-section.
- the interior of the blind bore 176 is constantly dominated by the low pressure area
- the valve member 142 effected by the valve spring 48 When the valve member 142 effected by the valve spring 48 is in its closed position, so are the openings 43 covered by this and the mouth of the opening 180 is located within the longitudinal bore 41 and is covered by this. The low pressure area is thus separated from the relief areas. If the pressure in the low-pressure region is sufficient to move the valve member 142 against the force of the valve spring 48, the opening 180 initially emerges from the longitudinal bore 41 with a slight opening stroke of the valve member 142, so that the low-pressure region via the blind bore 176, the opening 180 and the at least one opening 60 in the support member 50 is connected to the opening 62 and can flow through this opening 62 fuel from the low pressure region.
- the openings 43 are further covered by this small opening stroke of the valve member 142 through this and remain closed, so that no fuel can flow out of the low pressure region via the openings 43.
- the openings 43 are released by this, so that fuel can flow from the low-pressure region via the openings 43 in the return line 11.
- a use of the two-stage design of the Kraftstoffüberströmventils 36 is advantageous in a fuel injection device in which only a portion of the funded by the pump 10 fuel quantity is supplied to the interior 19 of the high-pressure pump 14 for the lubrication and cooling of the drive. If the pressure prevailing in the low-pressure region is not sufficient to open the fuel spill valve 36, the entire amount of fuel delivered by the feed pump 10 will exceed the
- Fuel metering 16 of the high-pressure pump 14 is supplied to the promotion.
- the fuel overflow valve 36 opens in the first stage and that over the opening of the first stage from the blind bore 176, the opening 180, the at least one opening 60 in the support element 50 and the opening 62 flowing fuel quantity is supplied to the interior 19 via a line 13 according to FIG.
- the second stage also opens in the case of the fuel overflow valve 36 in that the valve member 142 releases the openings 43 and releases fuel from the low-pressure region via the
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Safety Valves (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200710052665 DE102007052665A1 (de) | 2007-11-05 | 2007-11-05 | Kraftstoffüberströmventil für eine Kraftstoffeinspritzeinrichtung und Kraftstoffeinspritzeinrichtung mit Kraftstoffüberströmventil |
| PCT/EP2008/062443 WO2009059833A1 (de) | 2007-11-05 | 2008-09-18 | Kraftstoffüberströmventil für eine kraftstoffeinspritzeinrichtung und kraftstoffeinspritzeinrichtung mit kraftstoffüberströmventil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2207955A1 true EP2207955A1 (de) | 2010-07-21 |
| EP2207955B1 EP2207955B1 (de) | 2014-11-12 |
Family
ID=40254379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20080848181 Not-in-force EP2207955B1 (de) | 2007-11-05 | 2008-09-18 | Kraftstoffüberströmventil für eine kraftstoffeinspritzeinrichtung und kraftstoffeinspritzeinrichtung mit kraftstoffüberströmventil |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US8973557B2 (de) |
| EP (1) | EP2207955B1 (de) |
| JP (1) | JP5222368B2 (de) |
| KR (1) | KR101481206B1 (de) |
| CN (1) | CN101849096B (de) |
| DE (1) | DE102007052665A1 (de) |
| WO (1) | WO2009059833A1 (de) |
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| ITMI20072219A1 (it) * | 2007-11-23 | 2009-05-24 | Bosch Gmbh Robert | Valvola di sovrappressione e pompa di alta pressione comprendente tale valvola di sovrappressione |
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| IT1402911B1 (it) * | 2010-12-03 | 2013-09-27 | Bosch Gmbh Robert | Impianto per l'alimentazione di combustibile ad un motore a combustione interna |
| ITMI20110582A1 (it) * | 2011-04-08 | 2012-10-09 | Bosch Gmbh Robert | Gruppo di pompaggio per alimentare combustibile, preferibilmente gasolio, da un serbatoio di contenimento ad un motore a combustione interna |
| DE102012204565A1 (de) * | 2012-03-22 | 2013-09-26 | Robert Bosch Gmbh | Proportionalventil mit verbessertem Dichtsitz |
| US8511330B1 (en) * | 2012-04-26 | 2013-08-20 | Hamilton Sundstrand Corporation | Servo minimum pressure valve |
| EP2667012B1 (de) * | 2012-05-25 | 2017-02-22 | Caterpillar Motoren GmbH & Co. KG | Prallkörper mit einem verschleißfestes Einsatzelement und Prallkörper für eine kolbenbetätigte Kraftstoffpumpe |
| AT513154B1 (de) * | 2012-09-17 | 2014-02-15 | Bosch Gmbh Robert | Niederdruckkreislauf für ein Kraftstoffeinspritzsystem |
| DE102013200050A1 (de) | 2013-01-03 | 2014-07-03 | Robert Bosch Gmbh | Überströmventil für eine Kraftstoffpumpe |
| DE102013201892A1 (de) * | 2013-02-06 | 2014-08-07 | Robert Bosch Gmbh | Ventil |
| DE102013224387B4 (de) * | 2013-11-28 | 2019-11-28 | Robert Bosch Gmbh | Kraftstoffeinspritzsystem sowie Verfahren zum Betreiben eines Kraftstoffeinspritzsystems |
| ITMI20132214A1 (it) * | 2013-12-27 | 2015-06-28 | Bosch Gmbh Robert | Valvola di sovrappressione per una pompa common rail di alta pressione e pompa common rail di alta pressione |
| CN103742662A (zh) * | 2014-01-24 | 2014-04-23 | 中国船舶重工集团公司第七�三研究所 | 一种直动式溢流阀的套装滑阀 |
| DE102014008651A1 (de) * | 2014-06-13 | 2015-12-17 | Rsg Electronic Gmbh | Ventilvorrichtung zum Ansteuern von Medienströmen jedweder Art |
| GB201514625D0 (en) * | 2015-08-18 | 2015-09-30 | Delphi Int Operations Lux Srl | Regulator |
| CN105673283A (zh) * | 2016-01-28 | 2016-06-15 | 山东康达精密机械制造有限公司 | 一种直列分配式电控喷油泵用低压油腔压力增加装置 |
| DE102016210808A1 (de) | 2016-06-16 | 2017-12-21 | Robert Bosch Gmbh | Überströmventil für eine Kraftstoffhochdruckpumpe, Kraftstoffhochdruckpumpe |
| DE102017207091A1 (de) * | 2016-06-30 | 2018-01-04 | Robert Bosch Gmbh | Ventil zum Zumessen eines Fluids, Anschlussstück für ein Ventil und Brennstoffeinspritzanlage |
| WO2018025712A1 (ja) * | 2016-08-03 | 2018-02-08 | 株式会社ミクニ | リリーフバルブ |
| DE102017212003A1 (de) * | 2016-09-16 | 2018-03-22 | Robert Bosch Gmbh | Überströmventil, insbesondere zur Verwendung in einem Kraftstoffeinspritzsystem, Hochdruckpumpe sowie Kraftstoffeinspritzsystem |
| DE102016219631A1 (de) * | 2016-10-10 | 2018-04-12 | Robert Bosch Gmbh | Überströmventil, insbesondere für eine Hochdruckpumpe, sowie Hochdruckpumpe und Kraftstoffeinspritzsystem |
| DE102017204287A1 (de) | 2017-03-15 | 2018-09-20 | Robert Bosch Gmbh | Überströmventil für eine Kraftstoffhochdruckpumpe, Kraftstoffhochdruckpumpe |
| CN107489572A (zh) * | 2017-07-31 | 2017-12-19 | 成都威特电喷有限责任公司 | 一体式高压供油油泵 |
| DE102017216626B3 (de) * | 2017-09-20 | 2018-10-11 | Continental Automotive Gmbh | Ventil für eine Hochdruckpumpe für ein Kraftfahrzeug und Verfahren zum Herstellen eines Ventils für eine Hochdruckpumpe |
| DE102018200715A1 (de) * | 2018-01-17 | 2019-07-18 | Robert Bosch Gmbh | Kraftstofffördereinrichtung für kryogene Kraftstoffe |
| CN108386302A (zh) * | 2018-05-07 | 2018-08-10 | 长沙燕通生物科技有限公司 | 柴油机储能与分流启动装置 |
| DE102018211338A1 (de) * | 2018-07-10 | 2020-01-16 | Robert Bosch Gmbh | Kraftstofffördereinrichtung für kryogene Kraftstoffe und Verfahren zum Betreiben einer Kraftstofffördereinrichtung |
| CN113446277A (zh) * | 2021-05-22 | 2021-09-28 | 毛克徽 | 一种缓冲溢流阀 |
| DE102021209861A1 (de) | 2021-09-07 | 2023-03-09 | Robert Bosch Gesellschaft mit beschränkter Haftung | Kraftstoffüberströmventil für eine Kraftstoffeinspritzeinrichtung und Kraftstoffeinspritzeinrichtung mit Kraftstoffüberströmventil |
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| JP4237560B2 (ja) * | 2003-07-03 | 2009-03-11 | カヤバ工業株式会社 | 流体圧制御弁 |
| US7086388B2 (en) * | 2003-08-04 | 2006-08-08 | Delphi Technologies, Inc. | Combination valve for fuel system |
-
2007
- 2007-11-05 DE DE200710052665 patent/DE102007052665A1/de not_active Withdrawn
-
2008
- 2008-09-18 EP EP20080848181 patent/EP2207955B1/de not_active Not-in-force
- 2008-09-18 WO PCT/EP2008/062443 patent/WO2009059833A1/de not_active Ceased
- 2008-09-18 JP JP2010532523A patent/JP5222368B2/ja not_active Expired - Fee Related
- 2008-09-18 KR KR1020107009853A patent/KR101481206B1/ko not_active Expired - Fee Related
- 2008-09-18 US US12/741,494 patent/US8973557B2/en not_active Expired - Fee Related
- 2008-09-18 CN CN200880114809XA patent/CN101849096B/zh not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2009059833A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101481206B1 (ko) | 2015-01-09 |
| KR20100072338A (ko) | 2010-06-30 |
| WO2009059833A1 (de) | 2009-05-14 |
| EP2207955B1 (de) | 2014-11-12 |
| US20100258092A1 (en) | 2010-10-14 |
| JP5222368B2 (ja) | 2013-06-26 |
| CN101849096B (zh) | 2013-06-19 |
| DE102007052665A1 (de) | 2009-05-07 |
| JP2011503413A (ja) | 2011-01-27 |
| US8973557B2 (en) | 2015-03-10 |
| CN101849096A (zh) | 2010-09-29 |
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