WO2005001280A1 - Kraftstoffeinspritzanlage mit verringerten druckschwingungen im rücklaufrail - Google Patents
Kraftstoffeinspritzanlage mit verringerten druckschwingungen im rücklaufrail Download PDFInfo
- Publication number
- WO2005001280A1 WO2005001280A1 PCT/DE2004/000881 DE2004000881W WO2005001280A1 WO 2005001280 A1 WO2005001280 A1 WO 2005001280A1 DE 2004000881 W DE2004000881 W DE 2004000881W WO 2005001280 A1 WO2005001280 A1 WO 2005001280A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure
- fuel
- valve
- injector
- slide
- Prior art date
Links
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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
-
- 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
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
- F02M69/54—Arrangement of fuel pressure regulators
-
- 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
- F02M37/0047—Layout or arrangement of systems for feeding fuel
- F02M37/0052—Details on the fuel return circuit; Arrangement of pressure regulators
-
- 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
- F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
- F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
-
- 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
- F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
- F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
- F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
-
- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/002—Arrangement of leakage or drain conduits in or from injectors
-
- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/04—Means for damping vibrations or pressure fluctuations in injection pump inlets or outlets
-
- 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
- F02M2200/04—Fuel-injection apparatus having means for avoiding effect of cavitation, e.g. erosion
-
- 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
- F02M2200/28—Details of throttles in fuel-injection apparatus
-
- 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
- F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
-
- 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
- F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements
- F02M2200/315—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements for damping fuel pressure fluctuations
-
- 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
- F02M57/00—Fuel-injectors combined or associated with other devices
- F02M57/02—Injectors structurally combined with fuel-injection pumps
Definitions
- the invention is based on a fuel injection system according to the preamble of claim 1.
- the injector may be provided with an electrically operated solenoid valve that controls the injection process of the injector by changing the pressure in a control chamber.
- the pressure holding valve may be set relatively to a pressure of 30 bar, for example.
- the injector is generally equipped with a hydraulic coupler that is actuated by a piezo actuator.
- the hydraulic coupler is functionally surrounded by fuel, which is under the pressure of about 30 bar, so that the hydraulic coupler is always functional.
- the fuel return line may lead directly to the fuel tank of the internal combustion engine.
- the line connected to the end of the pressure control valve facing away from the injector is connected to a connecting line between a fuel from the fuel tank to a moderate pressure of, for. B. 5 bar lifting first pump and the input of a high pressure pump.
- the invention can be used in the systems mentioned above. It is known (EP 0780 569 B1, Fig.
- valve 13B to switch on the pressure accumulator a valve in the high-pressure line to the injector, which has a spherical movable valve member biased by a spring.
- This opens when fuel flows to the injector and closes almost completely when no fuel is flowing.
- a complete closing is prevented by the fact that the circularly circular cross-section behind the valve seat is radially expanded by grooves running in the longitudinal direction, which are not covered by the movable valve part.
- the valve When the valve is closed, the valve thus forms a throttle which, as can be seen from the use of specialist knowledge, is suitable for damping the first pressure wave arriving on the high-pressure line from the injector, and which can therefore also prevent the formation of further pressure fluctuations in the high-pressure line.
- the advantage of the fuel injection system according to the invention is that a disadvantage recognized by the inventors is reduced or avoided. This disadvantage is due to the following processes: If the injector triggers an injection process, a control quantity flows into the leakage line when the above-mentioned control valve is actuated and, during operation, causes the counterpressure valve to open and essentially the same amount as the control quantity the pressure control valve flows off.
- the inflow of the above-mentioned control quantity causes a flow surge into the leakage line and triggers a pressure wave towards the counter-pressure valve, which is reflected there as a vacuum wave when it is opened (reflections of a pressure wave at an open line end or a pressure node as opposed to a pressure belly occur as a vacuum wave) ,
- Such negative pressure waves can lead to cavitation, which in the long run causes damage to the injector and thereby reduces its service life. Cavitation occurs when the vapor pressure of the fuel falls below. It is believed that the lower the normal pressure in the leakage manifold and thus in the individual, the greater the risk of cavitation Leakage lines of the injectors is.
- negative pressure waves running from the pressure maintaining valve are weakened or prevented for the leakage connection of the injector.
- the throttle should be in the vicinity of the pressure-maintaining valve, the following is understood: the distance should not be so great that the throttle's effect on the suppression of negative pressure waves is adversely affected thereby; in addition, the leakage quantities of several, preferably all, of the injectors which are connected to a single pressure holding valve are intended to flow through said throttle.
- the throttle may be arranged in front of the pressure-maintaining valve, or behind it, or be structurally combined with the valve element of the pressure-maintaining valve, seen from the injector.
- a slide which is preferably designed as a solid cylinder, and is displaceably guided in a recess, in particular a bore, against the force of a spring and has to be displaced against this spring force when coming out of the leakage collecting line should leak fuel through the pressure control valve.
- at least one groove is incorporated in the wall of the cylinder, which is closed by the wall of the bore at its rear end when the pressure holding valve is at rest and is open at its front end and with its rear end from the rear when the cylinder is displaced sufficiently Area of the hole so that the groove, which also forms a throttle, is completely continuous.
- the solid cylinder is without grooves in its wall, instead a groove is incorporated in the wall of the bore, which is expediently closed at the front end by the cylinder surface of the cylinder when the valve is at rest, whereas its rear end is always free , and if the cylinder is shifted sufficiently, the front one Free end of the groove, which also forms a throttle.
- at least one of the above-mentioned grooves is present both in the wall of the cylinder and in the wall of the bore. It goes without saying that instead of a single groove, there can also be several grooves.
- the throttle by exchanging generally a single part or selecting a suitable part of this type when mounting the valve, is based on the conditions prevailing in a specific fuel injection system and are generally known for every internal combustion engine , can be adjusted.
- the characteristic impedance of the choke or, if there are several chokes, the combination of such chokes should be adjusted correctly.
- FIG. 1 shows an illustration of a fuel injection system according to the invention with a plurality of injectors and a pressure holding valve, in the area of which a throttle is provided;
- Fig. 2 shows the combination of provided in the arrangement of Fig. 1
- FIG. 3 shows a combination of pressure holding valve and throttle provided in another embodiment of the invention, modified from FIG. 2; 4 shows an arrangement provided in a further fuel injection system according to the invention instead of the valve arrangement according to FIGS. 2 and 3, in which a throttle is provided in a wall of a bore slidingly receiving a full cylinder,
- Fig. 6 essential components of the injector of the fuel injection system used in Fig. 1 with an electromagnetically operated control valve.
- a fuel injection system 1 which is provided in the example for diesel fuel, has a number of known injectors 3 (6 injectors in the example) which, during operation, fuel through injection openings 5 (see FIG. 6) inside a respectively assigned combustion chamber Inject the diesel engine.
- a pressure accumulator 7 is filled with fuel under high pressure (1600 bar in the example) via a line 8.
- Fuel is fed to a high-pressure connection 10 of each injector 3 via a high-pressure line 9 in each case.
- Leakage quantities and control quantities of the injectors which occur when a control valve that controls the injection process of the injectors are actuated, are each fed via a leakage line 11 from a low-pressure connection 12 to a leakage collection line 13 (leakage rail).
- the injectors 3 are such injectors which are controlled by an electrically operated solenoid valve which, when actuated in a known manner, the pressure within a
- Control chamber lowers, whereby the injection process is started.
- this control valve opens, fuel emerges from said control chamber and enters leakage line 11. All leakage lines of the injectors shown lead into the leakage line 13.
- One end of the leakage manifold 13 is closed, the other end, on the right in FIG. 1, is connected to a return line 17 for the fuel via a pressure holding valve 15, and this return line 17 leads to the fuel tank.
- Fuel is drawn in from the fuel tank in a known manner and finally brought to the high pressure with which the fuel is supplied to the pressure tank 7 by means of one or more pumps.
- the pressure-maintaining valve 15 opens at an overpressure within the leakage manifold 13 with respect to the pressure in the return line 17 of approximately 0.5 bar.
- a throttle device 20 is provided in the vicinity of the counterbalance valve 15, which serves to largely prevent undesired pressure wave reflections in the leakage manifold 13.
- Fig. 2 shows the combination of throttle device and provided in Fig. 1
- the throttle device is formed by a single throttle 27, which is introduced as a bore in a block 28 that can be selected appropriately during assembly.
- the block 28 is arranged in the flow direction of FIG. 1, that is to say from left to right, upstream of the back pressure holding valve.
- the assembly 25 is mounted pressure-tight in the arrangement according to FIG. 1 by screw connections.
- the combination 30 shown in FIG. 3 of the counter pressure holding valve and throttle device differs from FIG. 2 only in that the throttle device is arranged downstream of the actual counter pressure holding valve.
- FIGS. 2 and 3 can in embodiments of the invention in a completely identical manner by suitable connection, for. B. screwing of two separately manufactured parts, namely a component that essentially only contains the throttle bore, and a conventional counter pressure valve.
- the throttle and the back pressure holding valve form a unit which cannot be separated from one another.
- the valve arrangement 40 opens again when there is a counter pressure on the left side in FIG. 4 compared to the pressure on the right side in FIG. 4.
- the valve arrangement is essentially designed as a slide valve.
- a slide 41 full cylinder
- a guide surface is guided in the longitudinal direction of the essentially circular cylindrical valve arrangement 40 through a guide surface.
- the slide 41 is displaceable in a bore 42 in a center piece 43 against the force of a compression spring 44.
- a stop device 45 which is formed by a perforated plate and does not overall hinder the flow of the fuel.
- a longitudinal groove 47 is machined, which is open to the right, but to the left ends before the end of the slide 41, so that in the position of the slide 41 shown, fuel does not enter the groove from the left 47, which simultaneously forms the throttle, can occur. If the pressure on the left-hand side of FIG. 4 is so great that the slide 41 moves sufficiently far to the right, the groove 47 is finally also free at its front end and fuel can enter there and flow through the groove 47, so that the valve assembly is now open. Functions, the throttle can be seen as lying behind the valve opening.
- the embodiment of a combination 50 of a valve with a throttle shown in FIG. 5 differs from that shown in FIG. 4 only in that the throttle groove 51 is now arranged on the cylindrical outer surface of the slide 52, whereas the bore of the part 54 is smooth.
- the groove 51 is always open to the left and its right end is only for one
- Control chamber is always connected via a throttle to the connection of the injector that is connected to the high-pressure line.
- an outflow also occurs because when the valve mentioned is opened, a force acting on the valve piston, which with its lower end opens and closes the injection openings, additionally leads to fuel being drawn out of the
- Control chamber is pushed out.
- This opening of the control valve leads to a sudden increase in pressure in the leakage manifold.
- This increase in pressure opens the back pressure holding valve, the connection of which points to the right in FIGS. 1 and 2 then forms an open line end which reflects the pressure wave arriving from the injector as a vacuum wave.
- This reflection is mitigated by the throttle device and suppressed if the throttle is dimensioned exactly.
- the following dimensioning is expedient for the throttle:
- the anti-reflection effect of the throttle occurs when the pressure control valve is open (fuel-conducting). When the pressure control valve is blocked, no fuel flows through the throttle.
- the leakage collecting line has a characteristic impedance of approximately 0.8 bar • ms / mm 3 .
- the flow coefficient of the throttle is 660 cm 3 / min at 100 bar differential pressure. The above values are based on a round cable cross section of 3 mm 2 below
- the single throttle provided in FIG. 2 which is designed as a round bore, has a diameter of approximately 0.4 mm.
- the length of the choke which is 1 mm in the example, is chosen based on practical considerations; their length itself is less important for the function as a throttle.
- the injector 3 has a stroke-controlled valve piston 60, the movement of which is controlled by the pressure in a control chamber 62. If this pressure is reduced by opening a (in the example electromagnetic) control valve 64, the valve piston 60 opens and fuel is injected into the combustion chamber of a cylinder of the internal combustion engine via the injection openings 5.
- a (in the example electromagnetic) control valve 64 the valve piston 60 opens and fuel is injected into the combustion chamber of a cylinder of the internal combustion engine via the injection openings 5.
- the fuel which is at a pressure suitable for injection, is fed from a pressure accumulator to the injectors.
- the invention is also applicable to other fuel injection systems in which a control quantity in the leakage line causes a pressure surge when controlling the injection.
- systems are known in which each cylinder is assigned its own pump-injector unit. A pump of this unit may already be supplied with a certain fuel pressure, but this is not sufficient for the injection and is increased by the pump to the required injection pressure.
- a control valve leading to a leakage channel is arranged in the injector or in the pump and is blocked during the duration of the desired injection, so that the pump supplies the fuel can promote the injection ports.
- the control valve When the control valve is opened, the fuel delivered by the pump is discharged to the leakage channel.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE502004012034T DE502004012034D1 (de) | 2003-06-21 | 2004-04-27 | Kraftstoffeinspritzanlage mit verringerten druckschwingungen im rücklaufrail |
JP2006500491A JP2006523793A (ja) | 2003-06-21 | 2004-04-27 | リターンレール内で圧力振動の低減される燃料噴射装置 |
EP04729610A EP1727978B1 (de) | 2003-06-21 | 2004-04-27 | Kraftstoffeinspritzanlage mit verringerten druckschwingungen im rücklaufrail |
AT04729610T ATE492720T1 (de) | 2003-06-21 | 2004-04-27 | Kraftstoffeinspritzanlage mit verringerten druckschwingungen im rücklaufrail |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10328000A DE10328000A1 (de) | 2003-06-21 | 2003-06-21 | Kraftstoffeinspritzanlage mit verringerten Druckschwingungen im Rücklaufrail |
DE10328000.6 | 2003-06-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005001280A1 true WO2005001280A1 (de) | 2005-01-06 |
Family
ID=33520775
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2004/000881 WO2005001280A1 (de) | 2003-06-21 | 2004-04-27 | Kraftstoffeinspritzanlage mit verringerten druckschwingungen im rücklaufrail |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1727978B1 (de) |
JP (1) | JP2006523793A (de) |
KR (1) | KR20060028699A (de) |
AT (1) | ATE492720T1 (de) |
DE (2) | DE10328000A1 (de) |
WO (1) | WO2005001280A1 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007239536A (ja) * | 2006-03-07 | 2007-09-20 | Denso Corp | サプライポンプ |
FR2923271A1 (fr) * | 2007-11-07 | 2009-05-08 | Renault Sas | Dispositif d'injection de carburant. |
EP2249021A1 (de) * | 2009-05-06 | 2010-11-10 | Delphi Technologies Holding S.à.r.l. | Brennstoffzufuhrsystem |
WO2011106282A1 (en) * | 2010-02-24 | 2011-09-01 | Continental Automotive Systems Us, Inc. | Unbalanced inlet fuel tube for a fuel pressure regulator |
US8539934B2 (en) | 2008-04-10 | 2013-09-24 | Bosch Corporation | Injection abnormality detection method and common rail fuel injection control system |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4793315B2 (ja) * | 2006-07-20 | 2011-10-12 | 株式会社デンソー | 燃料噴射装置 |
JP2020143584A (ja) * | 2019-03-04 | 2020-09-10 | 株式会社デンソー | 圧力調整装置 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0994251A1 (de) * | 1998-10-17 | 2000-04-19 | Lucas Industries Limited | Kraftstoffeinspritzvorrichtung |
EP0780569B1 (de) | 1995-12-19 | 2002-03-20 | Nippon Soken, Inc. | Speicherkraftstoffeinspritzvorrichtung |
DE10046662A1 (de) * | 2000-09-20 | 2002-04-04 | Bosch Gmbh Robert | Ventil zum Steuern von Flüssigkeiten mit einer zentralen Leckageableitung |
US20020062817A1 (en) * | 2000-11-27 | 2002-05-30 | Hisashi Endo | Accumulator fuel injection system designed to avoid failure of relief valve caused by pressure pulsation |
DE10104634A1 (de) * | 2001-02-02 | 2002-09-19 | Bosch Gmbh Robert | Kraftstoffeinspritzsystem für Brennkraftmaschinen mit verbesserter Druckversorgung der Injektoren |
WO2003008795A1 (en) * | 2001-07-10 | 2003-01-30 | Bosch Automotive Systems Corporation | Accumulating fuel injector |
US20040050367A1 (en) * | 2001-11-23 | 2004-03-18 | Michael Kurrle | Injector for high-pressure fuel injection |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2890718B2 (ja) * | 1990-07-12 | 1999-05-17 | 株式会社デンソー | 燃料噴射装置の安全弁 |
JPH11257188A (ja) * | 1998-03-10 | 1999-09-21 | Hitachi Ltd | 燃料リターンバルブ |
DE19927804A1 (de) * | 1999-06-18 | 2000-12-28 | Bosch Gmbh Robert | Kraftstoffversorgungsanlage für eine Brennkraftmaschine |
DE19952513A1 (de) * | 1999-10-30 | 2001-06-07 | Bosch Gmbh Robert | Kraftstoffeinspritzsystem für Brennkraftmaschinen mit konstantem Lecköldruck im Injektor |
JP2002161829A (ja) * | 2000-11-27 | 2002-06-07 | Denso Corp | 蓄圧式燃料噴射装置 |
JP2002235635A (ja) * | 2001-02-13 | 2002-08-23 | Denso Corp | 蓄圧式燃料噴射装置 |
JP3786002B2 (ja) * | 2001-12-14 | 2006-06-14 | トヨタ自動車株式会社 | 内燃機関の高圧燃料供給装置 |
-
2003
- 2003-06-21 DE DE10328000A patent/DE10328000A1/de not_active Withdrawn
-
2004
- 2004-04-27 JP JP2006500491A patent/JP2006523793A/ja active Pending
- 2004-04-27 KR KR1020057024415A patent/KR20060028699A/ko not_active Application Discontinuation
- 2004-04-27 AT AT04729610T patent/ATE492720T1/de active
- 2004-04-27 DE DE502004012034T patent/DE502004012034D1/de not_active Expired - Lifetime
- 2004-04-27 WO PCT/DE2004/000881 patent/WO2005001280A1/de active Application Filing
- 2004-04-27 EP EP04729610A patent/EP1727978B1/de not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0780569B1 (de) | 1995-12-19 | 2002-03-20 | Nippon Soken, Inc. | Speicherkraftstoffeinspritzvorrichtung |
EP0994251A1 (de) * | 1998-10-17 | 2000-04-19 | Lucas Industries Limited | Kraftstoffeinspritzvorrichtung |
DE10046662A1 (de) * | 2000-09-20 | 2002-04-04 | Bosch Gmbh Robert | Ventil zum Steuern von Flüssigkeiten mit einer zentralen Leckageableitung |
US20020062817A1 (en) * | 2000-11-27 | 2002-05-30 | Hisashi Endo | Accumulator fuel injection system designed to avoid failure of relief valve caused by pressure pulsation |
DE10104634A1 (de) * | 2001-02-02 | 2002-09-19 | Bosch Gmbh Robert | Kraftstoffeinspritzsystem für Brennkraftmaschinen mit verbesserter Druckversorgung der Injektoren |
WO2003008795A1 (en) * | 2001-07-10 | 2003-01-30 | Bosch Automotive Systems Corporation | Accumulating fuel injector |
US20040050367A1 (en) * | 2001-11-23 | 2004-03-18 | Michael Kurrle | Injector for high-pressure fuel injection |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007239536A (ja) * | 2006-03-07 | 2007-09-20 | Denso Corp | サプライポンプ |
FR2923271A1 (fr) * | 2007-11-07 | 2009-05-08 | Renault Sas | Dispositif d'injection de carburant. |
US8539934B2 (en) | 2008-04-10 | 2013-09-24 | Bosch Corporation | Injection abnormality detection method and common rail fuel injection control system |
EP2249021A1 (de) * | 2009-05-06 | 2010-11-10 | Delphi Technologies Holding S.à.r.l. | Brennstoffzufuhrsystem |
WO2011106282A1 (en) * | 2010-02-24 | 2011-09-01 | Continental Automotive Systems Us, Inc. | Unbalanced inlet fuel tube for a fuel pressure regulator |
US8302622B2 (en) | 2010-02-24 | 2012-11-06 | Continental Automotive Systems Us, Inc. | Unbalanced inlet fuel tube for a fuel pressure regulator |
Also Published As
Publication number | Publication date |
---|---|
EP1727978B1 (de) | 2010-12-22 |
DE502004012034D1 (de) | 2011-02-03 |
EP1727978A1 (de) | 2006-12-06 |
DE10328000A1 (de) | 2005-01-13 |
ATE492720T1 (de) | 2011-01-15 |
KR20060028699A (ko) | 2006-03-31 |
JP2006523793A (ja) | 2006-10-19 |
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