EP1611342A1 - High-pressure line for a fuel injection system - Google Patents
High-pressure line for a fuel injection systemInfo
- Publication number
- EP1611342A1 EP1611342A1 EP03811301A EP03811301A EP1611342A1 EP 1611342 A1 EP1611342 A1 EP 1611342A1 EP 03811301 A EP03811301 A EP 03811301A EP 03811301 A EP03811301 A EP 03811301A EP 1611342 A1 EP1611342 A1 EP 1611342A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- section
- pressure line
- pressure
- injector
- diameter
- 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
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
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
- F02M55/025—Common rails
-
- 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
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and 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
- 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
-
- 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
-
- 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
Definitions
- the invention relates to a high-pressure line for a fuel injection system for an internal combustion engine.
- Fuel injection system 102 according to the prior art of an internal combustion engine.
- the reference numerals used here are also used in the description of the high-pressure line according to the invention.
- the fuel injection system 102 shown in FIG. 8 comprises a fuel tank 104 from which fuel 106 is delivered by an electrical or mechanical fuel pump 108.
- the fuel 106 is conveyed to a high-pressure fuel pump 111 via a low-pressure fuel line 110.
- the fuel 106 passes via a high-pressure fuel line 112 to a common rail 114.
- a plurality of injectors 1 are connected to the common rail 114, which inject the fuel 106 directly into combustion chambers 118 of an internal combustion engine (not shown).
- the hydraulic connection between common rail 114 and injectors 1 is made via a high-pressure line 3.
- the injector 1 belonging to the combustion chamber 118 is opened. As a result, the high pressure fuel 106 flows from the injector 1 into the
- Combustion chamber 118 The quantity of fuel that has escaped subsequently flows from common rail 114 to injector 1.
- the steepness of the flanks of the pressure wave is also referred to below as the gradient dp / dt.
- the amplitude of the previously described pressure wave is superimposed on the static common rail pressure immediately after the start of an injection.
- the pressure in the injector 1 is not constant, but is subject to considerable time fluctuations. This is especially true not only during the injection itself, but also for the
- Time period that follows an injection Since the amount of fuel injected into the combustion chamber 118 depends, among other things, on the pressure prevailing in the injector 1 during the injection, the abovementioned pressure wave has an undesirable influence on the amount of injection. This applies on the one hand if the injection duration is longer than the running time of the pressure wave through the high-pressure line, but especially if a pressure wave triggered by a pre-injection and reflected on the common rail 114 during a subsequent main injection in the injector 1 acts. However, this also makes it clear that the quantity injected during a main injection depends to a large extent on its distance from a previous pre-injection.
- a throttle (not shown) is installed in the high-pressure line 3. As a result, the pressure waves are damped; however, the throttle also reduces the injection pressure available at injector 1, which is undesirable.
- a check valve (not shown) can be provided parallel to the throttle (not shown), which opens in the direction of the injector 1. This avoids throttling losses; however, the throttle is ineffective as long as fuel flows from common rail 114 to injector 1; that is during the
- the high-pressure line consists of a first section and a second section and that the first section and the second section are connected in parallel,
- a particularly advantageous embodiment of the invention is characterized in that the first section has an open end and that the second section has a closed end. According to the invention, the open end of the first section is connected to the common rail and the first section and the second
- Section with its open end and the second section with its closed end are of substantially the same length, where the first section and the second section meet, two pressure waves meet with the same amplitude, the sign of the Amplitude is positive on one pressure wave and negative on the other.
- the pressure waves are extinguished, so that, seen in the flow direction, there is no longer any pressure wave behind the merging point of the first section and second section. Rather, there is a constant pressure in the injector and thus also constant initial conditions, for example for a main injection following a pre-injection, regardless of their distance from one another.
- the first section and the second section are hydraulically connected by a throttle. This ensures that a large part of the amplitude of the reflected pressure waves is extinguished before reaching the junction point, namely where there is a hydraulic connection between the first section and second section through the throttle, so that only very small remaining ones remain at the junction point Pressure waves arrive from the two line sections.
- a throttle is introduced in section 2 of the line.
- this high-pressure line can be further improved by providing a check valve connected in series with the throttle in the second section. It is thereby achieved that the vacuum waves triggered by an injection, as previously, on closed end are reflected, but that in the event of any incoming excess pressure waves, the valve opens and the waves are reduced via the throttle in 's Raii, so that there is little or no reflection.
- the high-pressure line has a third section and that both the first section and the second section open into the third section, which extends between the union point and the injector.
- This embodiment ensures that the high-pressure line according to the invention can be connected to common rails and injectors that are already in series production without any design changes.
- the high pressure line Prerequisite for the high pressure line according to the invention.
- the reflected pressure waves from sections 1 and 2 may be targeted arrive at the union point. This can then be achieved by different power lengths Li and L 2 .
- the disadvantages of the prior art are also improved by a one-piece high-pressure line in which one end of the high-pressure line has an enlarged diameter.
- the pressure on the common rail is not completely reflected at one location, but rather in the area of the increasing diameter in the high-pressure line, the pressure wave is already partially broken and reflected.
- the edges of the reflected pressure wave become flatter, that is, the gradient dp / dt decreases sharply.
- This also reduces the pressure vibrations in the area of the nozzle needle seat in the injector, which on the one hand considerably reduces the influence of the distance between two injections on the second injection and on the other hand results in significantly reduced wear on the nozzle seat.
- the diameter expansion of the high pressure line can either be frustoconical or stepped.
- this embodiment also includes high-pressure lines in which a separate connecting piece with an enlarged diameter, in particular with a frustoconical or conical enlarged diameter, is attached to the common rail.
- the diameter can also increase in length in a non-linear manner, which leads to a curved, conical inner shape.
- FIG. 1 shows a high-pressure line according to the prior art
- Figure 8 is a schematic representation of a
- an xp diagram is shown on the left of the high pressure line 3.
- x represents a length coordinate of the high pressure line 3, the zero point of which The connection between the injector 1 and the high-pressure line 3 lies
- the Y-axis of the diagram labeled "p" represents a pressure p (x) in the high-pressure line 3.
- High-pressure line 3 represents when the pressure wave moves from the injector 1 in the direction of the common rail 114.
- the diagram on the left of the high-pressure line 3 shows a snapshot at a time when there is a maximum 5 of the pressure wave between the injector 1 and the common rail 114.
- the direction of the pressure wave is represented by an arrow 7.
- the pressure wave has the form of a pressure drop compared to the static pressure in the high-pressure line 3. This is also immediately obvious if one realizes that the opening, in particular the sudden opening, of the injector 1 injects fuel from the injector 1 into the combustion chamber 118 (see FIG. 8), so that a pressure decrease in the injector 1 takes place.
- a pressure wave with a negative amplitude arises, which runs from the injector 1 in the direction of the common rail 114 through the high-pressure line 3.
- the amplitude of the pressure wave is m z igur i with n DCA.CAV -.-- HC.I_.
- the common rail 114 acts like an open end with a static pressure with respect to the pressure wave.
- the pressure wave is reflected, that is, it changes their running direction and now runs from the common rail 114 in the direction of the injector 1.
- the sign of the amplitude changes, so that a pressure drop becomes a pressure increase.
- This is indicated by the px diagram on the right of the high pressure line 3.
- the direction of arrow 7 has been reversed from the illustration on the left side of high-pressure line 3.
- the pressure drop has also resulted in a pressure increase, as the comparison of the pressure waves in the px diagrams on the left and right of the high-pressure line 3 shows.
- the injector 1 If, on the other hand, the injector 1 is closed at the point in time at which the reflected pressure wave reaches it, it represents a closed end for the pressure wave and the wave is reflected in the direction of the rail again, this time while maintaining its amplitude. Finally, a very weakly damped, standing wave then forms in the line, the pressure in injector 1 oscillates for a long time after an injection, and there is a considerable influence on the distance between two Injections on the second injection.
- a gradient dp / dt is shown qualitatively in the p-x diagram on the left of the high-pressure line 3. This representation is not entirely correct, since a time course of the pressure "p" cannot be represented in a p-x diagram; However, because of the constant speed of propagation of the pressure wave in the high pressure line 3, there is a direct relationship between the slope of the flank of the pressure wave, as shown in the px diagram according to FIG. 1, and as defined in connection with the invention, namely as a change over time Fuel pressure in the high pressure line 3, also referred to here as the gradient dp / dt.
- FIG. 2 shows a first exemplary embodiment of a high-pressure line 3 according to the invention.
- the high-pressure line 3 is designed in two parts. It has a first section 3.1 and a second section 3.2.
- the first section 3.1 connects the common rail 114 to the injector 1 and has a length Li and a hydraulic diameter Di.
- the second section 3.2 has a length L? and a hydraulic diameter D 2 .
- the first section 3.1 and the second section 3.2 meet and open into one another where they are connected to the injector 1.
- the second section 3.2 has a closed end 9.
- the hydraulic diameters Di and D can be essentially the same.
- the invention is not based on this Dimensioning limited.
- a pressure wave arises in the form of a pressure drop which runs through both the first section 3.1 and the second section 3.2 of the high-pressure line 3.
- the pressure wave is reflected at the open end of the first section 3.1, namely where it ends in the common rail 114, and changes its sign in the process. This means that a drop in pressure becomes an increase in pressure.
- the situation is different with the reflection of the pressure wave at the closed end 9 of the second section 3.2. There the pressure wave only changes its direction, but not the sign of its amplitude. The pressure wave reflected by the closed end 9 of the second section 3.2 is still a pressure drop. If the reflected pressure wave of the first section, which is now a pressure increase, and the reflected pressure wave of the second section 3.2, which is still a pressure drop, meet where they open into the injector 1, the reflected ones are deleted Pressure waves of the first section 3.1 and the second section 3.2, so that the pressure "p" in the injector 1 remains constant over time.
- FIG. 3 shows a further exemplary embodiment of a high-pressure line 1 according to the invention.
- a significant difference to the embodiment according to Figure 2 is that between injector 1 and the first section 3.1 and the second section 3.2 there is a third section 3.3 of the high pressure line.
- the third section 3.3 has a hydraulic diameter D 3 and a length L 3 . It can be advantageous if the sum of the squares Di 2 + D 2 2 of the hydraulic diameters Di and D 2 is equal to the square D 3 "of the hydraulic diameter D 3 of the third section 3.3.
- the processes in the first section 3.1 and in the second section 3.2 in this exemplary embodiment correspond to the processes which were previously described with reference to the exemplary embodiment according to FIG. 2.
- the mode of operation of the second section 3.2 with a closed end 9 is to be clarified once again on the basis of this second exemplary embodiment.
- the p-x diagrams to the right and left of the high-pressure line, which are designated by I, show the pressure wave on the way from injector 1 to common rail 114 or to the closed end 9. In the p-x diagram to the left of
- High-pressure line 3 which is designated II, the reflected pressure wave is shown on its way from the common rail 114 through the first section 3.1 to the injector 1
- the pressure wave undergoes a sign reversal upon reflection on the common rail 114, so that a pressure drop becomes an increase in pressure.
- Section 3.2 arranged px diagrams I and II reveals, when the pressure wave is reflected at the closed end 9 there is no sign reversal of the amplitude, that is to say the pressure drop is only reflected at the closed end 9, that is to say it changes its direction of travel, but not its sign, if the pressure waves according to the px diagrams, which are labeled II in FIG. 3, meet each other where the first section 3.1 and the second section 3.2 open into the third section 3.3 the pressure waves, because of their different signs, completely out, so that there is no more pressure wave in the third section 3.3 and in the injector 1.
- FIG. 4 largely corresponds to the embodiment shown in FIG. 3, a throttle 11 being provided only in the second section 3.2.
- the injector 1, which is connected to the third section 3.2, is not shown in FIGS. 4, 5, 6 and 7 for reasons of space.
- the arrangement according to the invention of the throttle 11 in the second section 3.2 can in some cases improve the overall operating behavior of the internal combustion engine over the entire speed range and under all load conditions, even if in certain cases Load points and speeds may not completely eliminate the pressure waves.
- the throttle 11 is not introduced into the section 2 of the line 8, but rather connects the first section 3.1 and the second section 3.2 with one another. Since the pressure waves running away from the injector in sections 1 and 2 of line 3 have the same sign, the throttle has no influence on these waves - there are none
- the second section 3.2 also represents a hydraulic connection between the third section 3.3 and the common rail 114, although a throttle 11 and a check valve 13 are present in the second section 3.2.
- the check valve 13 allows fuel to flow back from the second section 3.2 into the common rail. The check valve closes in the other direction. The check valve remains closed with incoming pressure waves with a negative sign and thus continues to represent a closed end with unchanged function.
- the high-pressure line 3 is again made in one piece and has a diameter-widened region 3.4.
- the area 3.4 with a larger diameter is conical, the end with the larger diameter opening into the common rail 114.
- the invention is not limited to conical diameter expansions, but can also include, for example, step-shaped or stepless, but not linear diameter expansions.
- this diameter-enlarged area 3.4 An important effect of this diameter-enlarged area 3.4 is that the incoming pressure wave is not suddenly reflected at the end of the line, but that it is partially reflected over the entire diameter-enlarged area 3.4. The rest of the pressure wave, which reaches the common rail 114, is reflected there in the manner described above and changes its sign. Due to the partial reflection of the pressure wave in the area 3.4 with an enlarged diameter, the pressure wave contour is "smoothed" immediately, which results in a reduction in the amplitude of the reflected wave (see the px diagram on the far left in FIG. 7) and in particular in a much flatter flank dp / dt of the reflected pressure wave.
- the pressure fluctuations within the injector 7 are smaller due to the reflected pressure wave and extend over a longer period of time.
- the influence of the distance between two injections on the second one is considerably reduced and the accuracy of the metering of the injection quantities is thus increased.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10007052.3A EP2230397B1 (en) | 2003-02-25 | 2003-08-21 | High pressure line for fuel injection system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003107871 DE10307871A1 (en) | 2003-02-25 | 2003-02-25 | High pressure line for a fuel injection system |
PCT/DE2003/002795 WO2004076846A1 (en) | 2003-02-25 | 2003-08-21 | High-pressure line for a fuel injection system |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10007052.3A Division EP2230397B1 (en) | 2003-02-25 | 2003-08-21 | High pressure line for fuel injection system |
EP10007052.3 Division-Into | 2010-07-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1611342A1 true EP1611342A1 (en) | 2006-01-04 |
EP1611342B1 EP1611342B1 (en) | 2012-02-29 |
Family
ID=32797714
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10007052.3A Expired - Lifetime EP2230397B1 (en) | 2003-02-25 | 2003-08-21 | High pressure line for fuel injection system |
EP03811301A Expired - Lifetime EP1611342B1 (en) | 2003-02-25 | 2003-08-21 | High-pressure line for a fuel injection system |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10007052.3A Expired - Lifetime EP2230397B1 (en) | 2003-02-25 | 2003-08-21 | High pressure line for fuel injection system |
Country Status (5)
Country | Link |
---|---|
EP (2) | EP2230397B1 (en) |
JP (1) | JP2006514201A (en) |
CN (1) | CN1745243B (en) |
DE (1) | DE10307871A1 (en) |
WO (1) | WO2004076846A1 (en) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BRPI0613413B1 (en) | 2005-07-18 | 2019-08-27 | Ganser Hydromag | accumulator injection system for an internal combustion engine |
AT501573B1 (en) * | 2006-06-13 | 2008-05-15 | Avl List Gmbh | HYDRAULIC DEVICE WITH AT LEAST ONE PRESSURE MEMORY |
DE102005051005A1 (en) * | 2005-10-25 | 2007-04-26 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engine has inflow-side end of valve housing in form of long connection shell deformable by radial forces |
DE102005060021A1 (en) * | 2005-12-15 | 2007-06-28 | Siemens Ag | Ingested throttle at the ends of high-pressure lines for injection systems |
AT503660B1 (en) * | 2006-06-13 | 2007-12-15 | Bosch Gmbh Robert | DEVICE FOR INJECTING FUEL IN THE COMBUSTION ENGINE OF AN INTERNAL COMBUSTION ENGINE |
DE102007025617A1 (en) | 2007-06-01 | 2008-12-04 | Robert Bosch Gmbh | Fuel injector with low wear |
DE102008015143A1 (en) * | 2008-03-20 | 2009-09-24 | GM Global Technology Operations, Inc., Detroit | Fuel supply system for motor vehicle, has fuel conveying device and combined fuel distribution line, where two injection lines are connected with combined fuel distribution line |
FR2929344A3 (en) * | 2008-03-31 | 2009-10-02 | Renault Sas | Fuel return circuit for fuel injecting device in internal combustion engine, has attenuation pipe made of deformable material i.e. rubber, and closed towards one of its ends such that pressure waves introduced in circuit are attenuated |
AT509877B1 (en) * | 2010-11-02 | 2011-12-15 | Bosch Gmbh Robert | DEVICE FOR INJECTING FUEL IN THE COMBUSTION ENGINE OF AN INTERNAL COMBUSTION ENGINE |
JP2013079594A (en) * | 2011-10-03 | 2013-05-02 | Usui Kokusai Sangyo Kaisha Ltd | Common rail type fuel injection system |
US9272437B2 (en) | 2012-10-31 | 2016-03-01 | Flow International Corporation | Fluid distribution components of high-pressure fluid jet systems |
JP6031728B2 (en) * | 2013-10-24 | 2016-11-24 | 愛三工業株式会社 | Fuel supply device |
US9884406B2 (en) | 2014-01-15 | 2018-02-06 | Flow International Corporation | High-pressure waterjet cutting head systems, components and related methods |
EP3032086A1 (en) * | 2014-12-08 | 2016-06-15 | Wärtsilä Finland Oy | Fuel injection arrangement |
JP6409685B2 (en) * | 2015-06-03 | 2018-10-24 | 株式会社デンソー | Fuel supply device |
US10596717B2 (en) | 2015-07-13 | 2020-03-24 | Flow International Corporation | Methods of cutting fiber reinforced polymer composite workpieces with a pure waterjet |
CN105840373B (en) * | 2016-03-24 | 2019-06-25 | 中国北方发动机研究所(天津) | A kind of device controlling oil spout " water attack " pressure wave |
CN109268343B (en) * | 2017-07-18 | 2022-02-22 | 罗伯特·博世有限公司 | Method and recording medium for determining a malfunction of an actuator of a hydraulic system |
DE102017126642A1 (en) | 2017-11-13 | 2019-05-16 | Volkswagen Aktiengesellschaft | Device for reducing pressure wave oscillations in an injection device |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2293412A (en) * | 1994-09-13 | 1996-03-27 | Cummins Engine Co Ltd | Control of turbocharged engine fuel injection |
JPH1030521A (en) * | 1996-07-12 | 1998-02-03 | Denso Corp | Fuel injector |
JPH10213045A (en) * | 1996-11-30 | 1998-08-11 | Usui Internatl Ind Co Ltd | Connecting structure for branch connecting body in common rail |
JPH11200987A (en) * | 1998-01-07 | 1999-07-27 | Toyota Autom Loom Works Ltd | Inertia supercharging system of pressure accumulation type fuel injection system for internal combustion engine |
SE521406C2 (en) * | 1998-10-23 | 2003-10-28 | Scania Cv Ab | Combustion engine fuel injection device |
FR2786225B1 (en) * | 1998-11-24 | 2000-12-22 | Inst Francais Du Petrole | HIGH PRESSURE FUEL INJECTION SYSTEM IN A DIRECT INJECTION INTERNAL COMBUSTION ENGINE |
DE19959105A1 (en) * | 1999-12-08 | 2001-06-21 | Bosch Gmbh Robert | Connection piece and housing, in particular high-pressure fuel accumulator, with prestressed welded connection piece for a fuel injection system for internal combustion engines |
DE10057683B4 (en) * | 2000-11-21 | 2005-10-06 | Robert Bosch Gmbh | Fuel injection system |
DE10060811A1 (en) | 2000-12-07 | 2002-06-13 | Bosch Gmbh Robert | Fuel injection system for internal combustion engines |
FR2818732B1 (en) * | 2000-12-22 | 2004-05-28 | Renault | METHOD FOR DAMPING PRESSURE WAVES IN A HYDRAULIC LINE, AND INJECTION DEVICE WITH A COMMON RAMP IMPLEMENTING THIS METHOD |
DE10105031A1 (en) * | 2001-02-05 | 2002-08-14 | Bosch Gmbh Robert | Device for damping pressure pulsations in high-pressure injection systems |
-
2003
- 2003-02-25 DE DE2003107871 patent/DE10307871A1/en not_active Withdrawn
- 2003-08-21 JP JP2004568632A patent/JP2006514201A/en active Pending
- 2003-08-21 WO PCT/DE2003/002795 patent/WO2004076846A1/en active Application Filing
- 2003-08-21 EP EP10007052.3A patent/EP2230397B1/en not_active Expired - Lifetime
- 2003-08-21 EP EP03811301A patent/EP1611342B1/en not_active Expired - Lifetime
- 2003-08-21 CN CN03826031.XA patent/CN1745243B/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2004076846A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2004076846A1 (en) | 2004-09-10 |
CN1745243B (en) | 2013-05-01 |
EP2230397B1 (en) | 2016-10-12 |
JP2006514201A (en) | 2006-04-27 |
EP2230397A1 (en) | 2010-09-22 |
EP1611342B1 (en) | 2012-02-29 |
CN1745243A (en) | 2006-03-08 |
DE10307871A1 (en) | 2004-09-02 |
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