EP1141540B1 - Vorrichtung zum schnellen druckaufbau in einer durch eine förderpumpe mit einem druckmedium versorgten einrichtung eines kraftfahrzeugs - Google Patents
Vorrichtung zum schnellen druckaufbau in einer durch eine förderpumpe mit einem druckmedium versorgten einrichtung eines kraftfahrzeugs Download PDFInfo
- Publication number
- EP1141540B1 EP1141540B1 EP00945575A EP00945575A EP1141540B1 EP 1141540 B1 EP1141540 B1 EP 1141540B1 EP 00945575 A EP00945575 A EP 00945575A EP 00945575 A EP00945575 A EP 00945575A EP 1141540 B1 EP1141540 B1 EP 1141540B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- pressure
- cylinder
- feed pump
- locking
- 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.)
- Expired - Lifetime
Links
Images
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
- F02M59/18—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps characterised by the pumping action being achieved through release of pre-compressed springs
-
- 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
- F02M59/38—Pumps characterised by adaptations to special uses or conditions
- F02M59/42—Pumps characterised by adaptations to special uses or conditions for starting of engines
-
- 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
- F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
- F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
Definitions
- the invention is based on a device for rapid pressure build-up in a a delivery pump with a pressure medium supplied device of a motor vehicle, especially in one supplied by a high-pressure pump with fuel Accumulator injection system (common rail), according to the preamble of claim 1.
- DE 42 15 721 A is already a device for rapid pressure build-up in one by a feed pump with a pressure medium supplied device of a motor vehicle known, in which a piston in a closed cylinder is longitudinally displaceable and the side walls of the cylinder with connections for the feed pump and the Device are provided. On the piston, a displaceable in the cylinder locking device attack.
- EP 0 455 761 B1 is a hydraulic valve control device for controlling the gas exchange valves of an internal combustion engine known, arranged with an upstream of a solenoid valve Control pressure accumulator, which includes a piston, the one against enlarge the force of a spring element biased against him Pressure chamber limited.
- the pressure chamber of the control pressure accumulator is connected to a feed pump of the valve control device and connectable via the solenoid valve with the control lines.
- the solenoid valve While the solenoid valve is in the closed position the piston is due to the pump in the pressure chamber constructed pressure against the action of the spring element in a pushed the pressure chamber increasing position.
- With open solenoid valve decreases the pressure in the pressure chamber, because a subset of the hydraulic oil flows into the control lines. Because of the sinking back pressure the piston can the pressure chamber due to its spring biashan, so that a pressure surge is created by which an additional clarification and maintenance of the control pressure is achievable in the control lines.
- the device according to the invention according to claim 1 has the opposite the advantage that to generate a rapid increase in pressure used piston alone by the locking device according to the invention in his enegiespeich shirts, against the spring element Pre-stressed position is durable.
- leaks can in the piping system, which is a pressure drop in the pressure chamber Do not cause a loss of the stored by the piston Lead energy.
- the piston is guided longitudinally displaceable within a closed cylinder, wherein the pressure space between the piston and a bottom of the cylinder provided with a pressure port is formed, via which the pressure chamber to a pump connected to the device connecting pressure line.
- the locking device comprises two in itself diametrically opposite receiving bores in the cylinder wall taken, in starting position in one direction across to the direction of movement of the piston in the cylinder and projecting preferably biased in this direction by coil springs Locking bolt, which is due to the movement of the piston in the direction on its locking positiontechnischdrteilbar in their mounting holes are and which, after the piston passes them and its locking position has reached, leaving their receiving holes engage behind at least the edge of the piston form fit.
- FIG. 1 An embodiment of the invention is shown in the drawing and explained in more detail in the following description.
- the only figure shows a device in a highly schematic form for rapid pressure build-up in a by a high-pressure pump with Fuel supplied accumulator injection system (common rail) according to a preferred embodiment of the invention.
- the designated 1 is used Device according to the invention according to a preferred embodiment the invention for rapid pressure build-up in a a high-pressure pump 2 fuel-supplied storage injection system 4 (common rail) of a self-igniting internal combustion engine 6 of a motor vehicle.
- a high-pressure pump 2 fuel-supplied storage injection system 4 (common rail) of a self-igniting internal combustion engine 6 of a motor vehicle.
- the device 1 is connected via a pressure connection 8 to a Pressure line 10 connected, which the high-pressure pump 2 with a downstream manifold 12 of the accumulator injection system 4 connects.
- the high-pressure feed pump 2 takes fuel from a highly schematized in the figure Fuel tank 14 and supplies the distribution bar 12 with High-pressure fuel, which then in a known manner individual injection valves 16 is distributed.
- the storage injection system 4 is arranged in the region of a cylinder head 18 of the internal combustion engine 6, which is placed on a cylinder block 20.
- the device 1 has a in the bottom 22 of a Housing 24 formed pipe stub 26, which in a stepped Receiving bore 28 is inserted on the cylinder head 18.
- An inside the pipe stub 26 and the receiving bore 28 réellerekkender Connecting channel 30 between the device 1 and the Pressure line 10 is through a in a radially outer annular channel 32nd the pipe stub 26 received sealing ring 34 against the Sealed atmosphere.
- the housing is preferably as elongated Cylinder 24 is formed, in which a cup-shaped, made of a hollow cylindrical Piston wall 36 and an end-side piston head 38 existing Piston 40 is guided longitudinally displaceable.
- a pressure chamber 44 is defined, which via the connecting channel 30 is constantly connected to the pressure line 10 in connection.
- the area facing away from the pressure chamber 44 surface 46 of the piston head 38th is supported by a on a top plate 48 of the cylinder 24, partially inside the piston wall 36 received coil spring 50 loaded, which reduces the piston 40 in the pressure chamber 44 Biased positions.
- the locking pins 56 are on the head side by one each a head plate 62 of the housing 60 supporting coil spring 64th biased radially inward and therefore protrude in the initial state into the interior of the cylinder 24. This provides a paragraph 66, whose Diameter larger than that of the receiving bore 54, for a Stop the locking pin 56 at the edge of the associated receiving bore 54.
- the distance of the locking pin 56 of the Head plate 48 of the cylinder 24 corresponds substantially to the length of the piston 40.
- the high pressure pump 2 driven and in the pressure line 10 generates a correspondingly high fuel pressure, which in Pressure chamber 44 and in particular at the pressure chamber 44 facing Surface 42 of the piston head 38 is present.
- This moves the piston 40 is indicated by a dot-dash line in the figure Starting position in the region of the cylinder bottom 22, in which the Pressure chamber 44 is vanishingly small, against the biasing effect the coil spring 50 on the projecting into the interior of the cylinder 24 Locking pin 56 and urges them into their mounting holes 54 back to the foot-side ends 68 of the locking bolt 56 are flush with the inner surface 70 of the cylinder wall 52.
- the foot-side ends 68 of the locking bolts 56 shaped accordingly, and preferably radially tapered inwardly wedge-shaped, with the inclined wedge surface 72 to the starting position of the piston 40 is turned.
- the spring rate of the piston 40 biasing coil spring 50 is conveniently so chosen that their force on the piston head 38 is less than that directed against this, from the operating pressure of the high-pressure pump 2 resulting pressure force.
- a drain 90 with a return 91 is provided to a flood of the Space between the piston head 38 and the top plate 48 with To avoid liquid.
- the locking bolts 56 are by means of more energizable, within the housing 60 arranged electromagnet 74 against the effect they are radially inwardly biasing coil springs 64 in the receiving holes 54 retractable, at least until their foot-side Ends 68 flush with the inner surface 70 of the cylinder wall 52 are.
- the electromagnets 74 consist of a magnetic coil 76, which radially encloses a magnetic core 78.
- the locking bolts 56 then form anchors, on which by energizing the magnetic coils 76 a magnetic attraction is exercised.
- a corresponding electrical signal for energizing the magnetic coils 76 For example, by an engine control unit 80 at the start of Internal combustion engine 6 is generated, whereby the piston 40 is unlocked.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Description
Claims (7)
- Vorrichtung (1) zum schnellen Druckaufbau in einer durch eine Förderpumpe mit einem Druckmedium versorgten Einrichtung eines Kraftfahrzeugs, insbesondere in einem durch eine Hochdruckförderpumpe (2) mit Kraftstoff versorgten Speichereinspritzsystem (Common Rail) (4), beinhaltend einen Kolben (40), der einen gegen die Kraft eines gegen ihn vorgespannten Federelements (50) vergrößerbaren Druckraum (44) begrenzt, welcher mit der Förderpumpe (2) und mit der mit dem Druckmedium versorgten Einrichtung (4) in Verbindung steht, wobei eine auf den Kolben (40) wirkende Verriegelungseinrichtung (56, 64, 74) vorgesehen ist, durch die er in einer aufgrund des durch die Förderpumpe (2) im Druckraum (44) aufgebauten Drucks gegen die Vorspannung des Federelements (50) eingenommenen Verriegelungsstellung verriegelbar und nach Entriegelung in eine den Druckraum (44) verkleinernde Stellung entspannbar ist und der Kolben (40) innerhalb eines geschlossenen Zylinders (24) längsverschieblich geführt ist, wobei der Druckraum (44) zwischen dem Kolben (40) und einem Boden (22) des Zylinders (24) gebildet ist, dadurch gekennzeichnet, dass der Boden (22) mit einem Druckanschluß (8) versehen ist, über welchen der Druckraum (44) an eine die Förderpumpe (2) mit der Einrichtung (4) verbindenden Druckleitung (10) angeschlossen ist und die Verriegelungseinrichtung vorzugsweise zwei in sich diametral gegenüberliegenden Aufnahmebohrungen (54) in der Zylinderwandung (52) aufgenommene, in Ausgangsstellung in einer Richtung quer zur Bewegungsrichtung des Kolbens (40) in den Zylinder (24) hineinragende und in diese Richtung vorzugsweise durch Schraubenfedern (64) vorgespannte Verriegelungsbolzen (56) umfaßt, die durch die Bewegung des Kolbens (40) in Richtung auf die Verriegelungsstellung zu in ihre Aufnahmebohrungen (54) zurückdrängbar sind und die, nachdem der Kolben (40) sie passiert und seine Verriegelungsstellung erreicht hat, aus ihren Aufnahmebohrungen (54) austretend mindestens den Rand des Kolbens (40) formschlüssig hintergreifen.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Abstand der Verriegelungsbolzen (56) von einer Kopfplatte (48) des Zylinders (24) im wesentlichen der Länge des Kolbens (40) entspricht
- Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der Kolben (40) topfförmig ausgebildet ist, mit einer hohlzylindrischen Kolbenwand (36) und einem endseitigen Kolbenboden (38), wobei das vorzugsweise als Schraubenfeder (50) ausgebildete Federelemerit innerhalb der Kolbenwand (36) aufgenommen und zwischen dem Kolbenboden (38) und der Kopfplatte (48) des Zylinders (24) eingespannt ist.
- Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß eine Druckentlastungsbohrung (90) in der Kopfplatte (48) untergebracht ist, die das Abfließen von Leckageflüssigkeit über eine Leitung (91) in den Vorratsbehälter (14) ermöglicht.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Verriegelungsvorrichtung stromerregbare Elektromagneten (74) aufweist, durch welche die Verriegelungsbolzen (56) zur Entriegelung des Kolbens (40) entgegen der auf sie wirkenden Vorspannung in die Aufnahmebohrungen (54) zurückziehbar sind, mindestens bis ihre fußseitigen Enden (68) mit einer Innenfläche (70) der Zylinderwandung (52) bündig sind.
- Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die Elektromagneten (74) je eine einen Magnetkern (78) radial umschließende Magnetspule (76) beinhalten, wobei die Verriegelungsbolzen (56) Anker bilden, auf welche durch Bestromung der Magnetspulen (76) eine magnetische Anziehungskraft ausübbar ist.
- Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die Elektromagneten (74) beim Start des Kraftfahrzeugs stromerregt sind.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19949514 | 1999-10-14 | ||
DE19949514A DE19949514C2 (de) | 1999-10-14 | 1999-10-14 | Vorrichtung zum schnellen Druckaufbau in einer durch eine Förderpumpe mit einem Druckmedium versorgten Einrichtung eines Kraftfahrzeugs |
PCT/DE2000/001726 WO2001027467A1 (de) | 1999-10-14 | 2000-05-27 | Vorrichtung zum schnellen druckaufbau in einer durch eine förderpumpe mit einem druckmedium versorgten einrichtung eines kraftfahrzeugs |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1141540A1 EP1141540A1 (de) | 2001-10-10 |
EP1141540B1 true EP1141540B1 (de) | 2005-05-04 |
Family
ID=7925607
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00945575A Expired - Lifetime EP1141540B1 (de) | 1999-10-14 | 2000-05-27 | Vorrichtung zum schnellen druckaufbau in einer durch eine förderpumpe mit einem druckmedium versorgten einrichtung eines kraftfahrzeugs |
Country Status (5)
Country | Link |
---|---|
US (1) | US6497215B1 (de) |
EP (1) | EP1141540B1 (de) |
JP (1) | JP2003511627A (de) |
DE (2) | DE19949514C2 (de) |
WO (1) | WO2001027467A1 (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2824363B1 (fr) * | 2001-05-04 | 2004-01-02 | Peugeot Citroen Automobiles Sa | Dispositif de demarrage |
GR1003820B (el) * | 2001-05-18 | 2002-02-21 | Συστημα ηλεκτρουδραυλικης κινησης βαλβιδων | |
US6681743B2 (en) * | 2002-04-02 | 2004-01-27 | International Engine Intellectual Property Company, Llc | Pressure control valve with flow recovery |
DE10260775A1 (de) * | 2002-12-23 | 2004-07-01 | Daimlerchrysler Ag | Kraftstoffversorgungssystem für Verbrennungsmotoren mit Direkteinspritzung |
US7451742B2 (en) | 2007-10-29 | 2008-11-18 | Caterpillar Inc. | Engine having common rail intensifier and method |
US7717077B2 (en) * | 2007-11-13 | 2010-05-18 | Gm Global Technology Operations, Inc. | Internal combustion engine starting system and method |
DE102010042312A1 (de) | 2010-10-12 | 2012-04-12 | Robert Bosch Gmbh | Kraftstoffversorgungseinrichtung |
DE102011107263A1 (de) * | 2011-07-06 | 2013-01-10 | Fte Automotive Gmbh | Hydraulische Betätigungsvorrichtung für die Betätigung eines oder mehrerer Stellglieder in insbesondere einem Kraftfahrzeuggetriebe |
US9803702B2 (en) | 2012-07-03 | 2017-10-31 | Fte Automotive Gmbh | Hydraulic actuating device for actuation of at least one friction clutch and at least one gear setting element in a motor vehicle |
US9470195B2 (en) * | 2012-12-18 | 2016-10-18 | Fca Us Llc | Fuel supply system with accumulator |
JP6162078B2 (ja) * | 2014-06-17 | 2017-07-12 | 愛三工業株式会社 | 燃料供給装置 |
CN108488016A (zh) * | 2018-05-07 | 2018-09-04 | 长沙燕通生物科技有限公司 | 可缓解柴油机启动冒黑烟的装置 |
CN112824848B (zh) * | 2019-11-21 | 2022-05-10 | 成都飞机工业(集团)有限责任公司 | 一种轻型弹射机构 |
US11754028B2 (en) * | 2021-06-23 | 2023-09-12 | Ford Global Technologies, Llc | Fuel system diaphragm valve |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0147026A3 (de) * | 1983-12-27 | 1985-08-14 | Osamu Matsumura | Kraftstoffeinspritzvorrichtung |
US5152271A (en) * | 1985-07-15 | 1992-10-06 | Osamu Matsumura | Fuel injection apparatus |
DE3939065A1 (de) * | 1989-11-25 | 1991-05-29 | Bosch Gmbh Robert | Hydraulische ventilsteuervorrichtung fuer brennkraftmaschinen |
DE4215721A1 (de) * | 1992-05-13 | 1993-11-18 | Bosch Gmbh Robert | Kaltstarteinrichtung für Kraftstoffeinspritzpumpen |
DE4313852B4 (de) * | 1993-04-28 | 2004-11-25 | Robert Bosch Gmbh | Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen |
JPH07167009A (ja) * | 1993-12-14 | 1995-07-04 | Yamaha Motor Co Ltd | エンジンへの燃料供給装置 |
DE19539883B4 (de) * | 1995-05-26 | 2011-06-01 | Robert Bosch Gmbh | Kraftstoffversorgungsanlage und Verfahren zum Betreiben einer Brennkraftmaschine |
US5809771A (en) * | 1996-01-19 | 1998-09-22 | Woodward Governor Company | Aircraft engine fuel system |
US5711263A (en) * | 1996-04-22 | 1998-01-27 | Outboard Marine Corporation | Fuel primer pressure accumulator |
DE19627741A1 (de) * | 1996-07-10 | 1998-01-15 | Mannesmann Vdo Ag | Druckhalteeinrichtung |
US5701869A (en) * | 1996-12-13 | 1997-12-30 | Ford Motor Company | Fuel delivery system |
DE19709446C1 (de) * | 1997-03-07 | 1998-10-15 | Bosch Gmbh Robert | Fördereinrichtung für Brennstoff |
JPH11132124A (ja) * | 1997-10-24 | 1999-05-18 | Nippon Soken Inc | 燃料噴射装置 |
US6234128B1 (en) * | 2000-03-13 | 2001-05-22 | General Motors Corporation | Fuel accumulator with pressure on demand |
-
1999
- 1999-10-14 DE DE19949514A patent/DE19949514C2/de not_active Expired - Fee Related
-
2000
- 2000-05-27 DE DE50010231T patent/DE50010231D1/de not_active Expired - Lifetime
- 2000-05-27 WO PCT/DE2000/001726 patent/WO2001027467A1/de active IP Right Grant
- 2000-05-27 US US09/868,047 patent/US6497215B1/en not_active Expired - Lifetime
- 2000-05-27 JP JP2001529581A patent/JP2003511627A/ja active Pending
- 2000-05-27 EP EP00945575A patent/EP1141540B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE19949514C2 (de) | 2001-10-18 |
DE50010231D1 (de) | 2005-06-09 |
US6497215B1 (en) | 2002-12-24 |
JP2003511627A (ja) | 2003-03-25 |
WO2001027467A1 (de) | 2001-04-19 |
EP1141540A1 (de) | 2001-10-10 |
DE19949514A1 (de) | 2001-04-19 |
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