EP2057372A1 - Kraftstoffeinspritzvorrichtung mit druckverstärker - Google Patents
Kraftstoffeinspritzvorrichtung mit druckverstärkerInfo
- Publication number
- EP2057372A1 EP2057372A1 EP07786246A EP07786246A EP2057372A1 EP 2057372 A1 EP2057372 A1 EP 2057372A1 EP 07786246 A EP07786246 A EP 07786246A EP 07786246 A EP07786246 A EP 07786246A EP 2057372 A1 EP2057372 A1 EP 2057372A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- pressure
- chamber
- booster
- valve needle
- 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
- 238000002347 injection Methods 0.000 title claims abstract description 60
- 239000007924 injection Substances 0.000 title claims abstract description 60
- 239000000446 fuel Substances 0.000 title claims abstract description 40
- 238000002485 combustion reaction Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 34
- 238000003860 storage Methods 0.000 claims description 12
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 description 5
- 230000003068 static effect Effects 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M57/00—Fuel-injectors combined or associated with other devices
- F02M57/02—Injectors structurally combined with fuel-injection pumps
- F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
- F02M57/025—Injectors structurally combined with fuel-injection pumps characterised by the pump drive hydraulic, e.g. with pressure amplification
-
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/0047—Four-way valves or valves with more than four ways
Definitions
- the invention relates to a fuel injection device for an internal combustion engine, in particular of a motor vehicle, with an accumulator chamber (common rail), a leakage line, an injector, in which an axially displaceable injection piston separates a control chamber from a pressure chamber, and with a pressure booster, in which an axially displaceable Pressure booster piston an booster chamber, a spring chamber and a high-pressure chamber separated from each other, wherein a 3/2 way valve is provided, which connects the control chamber of the injector with either the pressure storage space or the leakage line and wherein the pressure chamber of the injector permanently with the pressure storage space and the high-pressure chamber of the booster is connected, according to the preamble of claim 1.
- a stroke-controlled fuel injection device in which an injection nozzle has a control chamber for controlling a nozzle needle and a nozzle chamber which can be connected to a pressure amplifier.
- the connection of a differential space of the pressure booster with a leakage line and the connection of the control chamber of the injection nozzle with the leakage line can be controlled by means of a common 3/2-way valve.
- a fuel injection device which comprises a common pressure storage space (common rail), an injector, a pressure booster and valves for controlling the injection curtain and the pressure intensification.
- the injector and the pressure intensifier are each controlled by their own 2/2 way valve.
- a four-way switching valve which has two movable valve elements, each forming a three-way switching valve and each having its own actuator, so that both valve elements can be operated independently.
- the two valve elements are arranged side by side in a valve housing in respective valve chambers, in each of which two opposite sealing seats are formed, on which the valve elements abut alternately.
- a control amount in the leakage line or a return is derived or controlled when opening the nozzle needle of the injector. From an energetic point of view, this amount is to be regarded as a leakage quantity and has a negative effect on the efficiency of the system.
- the invention has for its object to provide a fuel injection device with improved efficiency available.
- an additional 4/2-way valve is provided, which in a first switching position the booster chamber of the booster and the spring chamber of the booster separated from the pressure accumulator space interconnected and in a second switching position the spring chamber of the booster with the leakage line and the booster chamber of the Pressure booster connects to the pressure storage chamber.
- booster chamber of the booster and the spring chamber of the booster are permanently connected to each other via a check valve which blocks in the direction of the booster chamber, takes place in combination with the first switching position of the 4/2-way valve after the end of an injection recharging the booster from the volume of the preceding amplifier clock while the booster chamber is filled from the low pressure side of the booster, resulting in a reduced leakage volume and an improved energy balance by low losses of efficiency in strengthening and unreinforced.
- the permanent connection between the booster chamber of the booster and the spring chamber of the booster as a central bore in the Pressure booster piston formed. This achieves an uncontrollable switchability of the flow between the booster chamber and the high-pressure chamber in dependence on the direction of movement of the pressure intensifier piston and the pressure conditions. In addition, there is a cooling of the pressure booster piston and a resulting, reduced risk of jamming.
- a second check valve is arranged in the permanent connection between the accumulator chamber and the pressure chamber of the injector upstream of the connection with the high-pressure chamber of the booster, which blocks in the direction of the accumulator chamber.
- a third check valve is arranged in the permanent connection between the pressure chamber of the injector and the high-pressure chamber of the pressure intensifier upstream of the connection of the accumulator chamber with the pressure chamber of the injector, which in the direction of High pressure chamber of the pressure intensifier locks.
- the 4-way valve with four ports and a control for selectively opening, closing and / or interconnecting at least two of the four ports formed together
- the control member in a housing axially between a first position and a second position is displaceable
- the control member comprises a first valve needle and a second valve needle which are axially aligned with each other in the housing
- the housing is formed in two parts with a first sleeve and a second sleeve
- a first valve spring between the two valve pins and a second valve spring between the second valve needle and the housing is arranged such that the second valve spring pushes the valve needles in the axial direction in the first position
- the first sleeve a first seat, the second sleeve a second and a third seat
- the first valve needle a first shoulder to Anschla at the first seat of the first sleeve and a second shoulder for abutment with the second seat of the second sleeve and the
- the four terminals are arranged and formed such that in the first position, a first and a second terminal are closed and a third and a fourth terminal connected to each other and in the second position, the third terminal to the first terminal and the fourth terminal to the second port is connected.
- the 4/2-way valve is formed with a valve housing, at least two ports and a control for selectively opening, closing and / or interconnecting at least two of the terminals with each other, wherein the control element comprises a first and at least one second valve needle and in the valve housing, a first valve chamber having a first sealing seat in which the first valve needle between a first position, in which the first valve needle is lifted from the first sealing seat, and a second position, in which the first valve needle abuts against the first sealing seat, axially displaceable and is acted upon in the direction of the first position by means of a first valve spring with force, and a number of the second valve needle corresponding number of second valve chambers each having a second sealing seat, in each of which a second valve needle between a first position in which second Ve ntilnadel abuts on the second sealing seat, and a second position in which the second valve needle is lifted from the second sealing seat, axially displaceable and arranged in the direction of the first position
- ports and two second valve pins are provided, wherein the ports are arranged and connected to the valve chambers, that in the first position, a first port and a second port closed and a third port and a fourth port are connected to each other and in the second position, the third terminal is connected to the first terminal and the fourth terminal is connected to the second terminal.
- the first valve needle is connected to an actuator, which selectively moves the first valve needle against the force of the first valve spring in the second position.
- FIG. 3 shows a preferred embodiment of a pressure intensifier piston in a schematic sectional view
- Fig. 4 is a schematic sectional view of an exemplary embodiment of a 4/2-way valve
- Fig. 5 is a schematic sectional view of a preferred embodiment of a multi-way valve according to the invention.
- a preferred embodiment of a fuel injection device according to the invention for an otherwise not shown internal combustion engine comprises a high pressure fuel source 10, an accumulator chamber 12, a leakage line or a return 14, an injector 16, a pressure booster 18, a third / 2-way valve 20 and a 4/2 way valve 22.
- an injection piston or a nozzle needle 24 is arranged axially displaceable, which separates a control chamber 26 from a pressure chamber 28 and injection ports in the closed state (not shown) closes.
- the pressure booster 18 has an axially displaceable pressure booster piston 30 which separates an booster chamber 32, a spring chamber 34 and a high pressure chamber 36 from each other. In the spring chamber 34, a return spring 38 is arranged.
- the 4/2-way valve 22 is connected to the accumulator chamber 12, the leakage line 14, the booster chamber 32 of the pressure booster 18 and the spring chamber 34 of the booster 18.
- the 4/2-way valve 22 is designed such that in a first position, as shown in FIGS. 1 and 2, in which the pressure booster 18 is inactive, the booster chamber 32 of the pressure booster 18 is connected to the spring chamber 34 of the booster 18 and the connections to the accumulator chamber 12 and the leakage line 14 are closed and in a second position in which the pressure booster 18 is active, the booster chamber 32 of the booster 18 to the accumulator chamber 12 and the spring chamber 34 of the booster 18 is connected to the leakage line 14.
- a first connecting line 40 is provided with a first check valve 42, which establishes a permanent connection between the high pressure chamber 36 of the pressure booster 18 and the booster chamber 32 of the pressure booster 18, wherein the first check valve 42 is arranged and designed such that it in the direction booster chamber 32nd locks.
- the 3/2-way valve 20 is connected via a second connecting line 44 to the pressure storage chamber 12, with the leakage line 14 and with the control chamber 26 of the injector 16.
- a second check valve 46 is arranged, which blocks in the direction of the pressure accumulator space 12.
- the 3/2-way valve 20 is designed such that in a first position, as shown in Fig. 1, in the no injection of fuel takes place (injector closed), the control chamber 26 of the injector 16 via the second connecting line 44 with the pressure storage space 12 connected and the connection to the leakage line 14 is closed. In a second position of the 3/2-way valve 20, in which an injection of fuel takes place (injector 16 open), the control chamber 26 of the injector 16 is connected to the leakage line 14 and the connection to the second connecting line 44 is closed.
- a third connecting line 48 of the high-pressure chamber 36 of the pressure booster 18 to the second connecting line 44 and thus both with the pressure accumulator chamber 12 and via the 3/2-way valve 20 in its first position with the control chamber 26 of the injector 16 as well as a fourth Connecting line 52 connected to the pressure chamber 28 of the injector 16.
- a third check valve 50 is arranged, which blocks in the direction of the high-pressure chamber 36 of the pressure booster 18. In the first position of the 3/2-way valve 20, the same pressure prevails on both sides of the injection piston 24, so that the injection piston 24 closes the injector 16 in a known manner because of the surface difference on both sides of the injection piston 24.
- the pressure in the control chamber 26 of the injector 16 is diverted into the leakage line 14 and the rail pressure in the pressure chamber 28 of the injector 16 lifts the injection piston 24 from its sealing seat and thereby opens the injector 16, so that an injection of fuel takes place.
- the pressure intensifier 18 can be activated via the 4/2-way valve 22. If this is already activated before the opening of the injector 16 and also during the closing of the injector 16, particularly steep trailing edges result in the injection rate of the fuel during the injection.
- the booster chamber 32 is filled with fuel from the low pressure side of the booster 18.
- the two independent valves 20 and 22 is a free choice of Zuschaltzeitrelatess the pressure gain available. It can also be an injection of fuel completely without pressure boost.
- the 3/2-way valve 20 is used to meter the injection quantity over a predefinable opening period.
- Each of the switching valves 20 and 22 has its own actuator, so that both switching valves can be operated independently. The increase in efficiency is achieved by using fuel to refill the high-pressure chamber 36 of the pressure booster 18, which has already been used for pressure amplification.
- the installation space is very limited.
- the first connecting line 40 with first check valve 42 for filling the high-pressure chamber 36 of the pressure booster 18 from the spring chamber 34 and the booster chamber 32 of the booster 18 as a bore with check valve integrated into the pressure booster piston 30 form , This eliminates dead space and a volume to be guided around the outside of the pressure booster piston 30. This opens up the possibility of uncontrollable switchability of the flow between the booster chamber 32 and the high-pressure chamber 36 as a function of the direction of movement of the pressure booster piston 30 and the pressure conditions. In addition, there is a cooling of the pressure booster piston 30 and a resulting, reduced risk of clamping.
- FIG. 3 shows an exemplary embodiment of such a pressure booster piston 30 with integrated first connecting line 40 in the form of a central bore with the first check valve 42.
- This central bore 40 is used to reload the high-pressure chamber 36 without additional Injektorbohrung with energetically charged fuel from the booster chamber 32.
- the booster chamber 32 is acted upon by rail pressure and the pressure booster piston 30 moves to "down", ie in Direction of the high-pressure chamber 36.
- the first check valve 42 is closed during the pressure amplification. After the pressure boost, the pressure conditions are balanced and the pressure booster piston 30 is moved by spring force to "up”, ie in the direction of the booster chamber 32. The first check valve 42 is opened and ensures a fluid flow through the pressure booster piston 30 therethrough.
- a spring ensures that the first check valve 42 is pressed securely into its sealing seat after completion of the filling phase. This ensures that the pressure booster piston 30 has a reproducible start of delivery, i. as soon as the pressure booster piston 30 is actuated via the 4/2-way valve 22, the fuel begins to compress.
- exemplary embodiment of a 4/2-way valve to improve the leakage and function of the 4/2-way valve includes four ports 110, 112, 114, 116, a first valve needle 118 and a second valve needle 120 for selective opening Closing and / or interconnecting at least two of the four ports 110, 112, 114, 116 with each other, wherein the valve needles 118, 120 are axially displaceable in a housing between a first position and a second position, wherein the first position is shown ,
- valve needles 118, 120 are arranged in the housing axially aligned with each other, wherein the housing is formed in two parts with a first sleeve 122 and a second sleeve 124, which abut against each other at a parting plane 125.
- a first valve spring 126 is disposed between the two valve needles 118, 120 and a second valve spring 128 is disposed between the second valve needle 120 and the second sleeve 124 of the housing such that the second valve spring 128 axially directs the valve needles 118, 120 to the first position suppressed.
- the first sleeve 122 has a first seat 130 and the second sleeve 124 has a second seat 132 and a third seat 134.
- the first valve needle 118 has a first shoulder 136 for abutment with the first seat 130 of the first sleeve 122 and a second shoulder 138 for abutment with the second seat 132 of the second sleeve 124 and the second valve needle 120 has a third shoulder 140 for abutment with the second third seat 134 of the second sleeve 124 on.
- the seats 130, 132, 134 of the sleeves 122, 124 and the shoulders 136, 138, 140 of the valve needles 118, 120 are arranged and configured such that in the first position, the first shoulder 136 of the first valve needle 118 on the first seat 130 of FIG first sleeve 122 and the third shoulder 140 of the second valve needle 120 abuts the third seat 134 of the second sleeve 124 and the second shoulder 138 of the first valve needle 118 from second seat 132 of the second sleeve 124 is spaced.
- the first shoulder 136 of the first valve needle 118 is spaced from the first seat 130 of the first sleeve 122 and the third shoulder 140 of the second valve needle 120 is spaced from the third seat 134 of the second sleeve 124 and strikes the second shoulder 138 of the first valve needle 118 on the second seat 132 of the second sleeve 124 at.
- the four terminals 110, 112, 114, 116 are arranged and configured such that in the first position a first terminal 110 and a second terminal 112 are closed and a third terminal 114 and a fourth terminal 116 are connected to one another. In the second position, the third port 114 is connected to the first port 110 and the fourth port 116 is connected to the second port 112.
- the first valve needle 118 is connected to an actuator 142 which selectively moves the first and second valve pins 118, 120 against the force of the second valve spring 128 to the second position.
- the first valve spring 126 serves as a coupling spring for the two valve needles 118, 120 and compensates for length tolerances and ensures the static accuracy of the sealing seat. In the present case, this is a series connection of the individual sealing seats 130/136, 132/138 and 134/140.
- the 4/2-Wegeve ⁇ til is in the first position (rest position) when the actuator 142 is not energized and by the second valve spring 128, the two valve needle 118, 120 abut in their respective seat 130, 134.
- the spring force of the second valve spring 128 is overcome and the two valve needles 118, 120 lifted from the seats 130, 134 and finally the first valve needle 118 is pressed into the second seat 132.
- the first valve spring 126 is provided. This must be able to transmit the sealing force for the first seat 130 to the first valve needle 118. The system is thus statically determined.
- the first port 110 is connected to the pressure accumulator chamber 12, the second port 1 12 is connected to the leakage line 14, the third port 114 is connected to the booster chamber 32 of the pressure booster 18 and the fourth port 1 16 is connected to the spring chamber 34 of the booster 18.
- the illustrated in Fig. 5, preferred embodiment of a multi-way valve according to the invention is intended to improve the function of a multi-way valve and is designed as a 4/2-way valve and includes a valve housing 210, a first valve needle 212, which is arranged in a first valve chamber 214, and two second Valve needles 216, which are each arranged in a second valve chamber 218.
- a first sealing seat 220 is formed and the first valve needle 212 is in the first valve chamber 214 axially between a first position in which the first valve needle 212 is lifted from the first sealing seat 220, and a second position in which the first Valve needle 212 rests against the first sealing seat 220, displaceable.
- a first valve spring 222 acts on the first valve needle 212 in the direction of the first position with force.
- the first valve needle 212 is connected to an actuator 223 which selectively moves the first valve needle 212 against the force of the first valve spring 222 to the second position.
- a second valve spring 226 acts on the second valve needle 216 in the direction of the first position with force.
- Each second valve chamber 218 has an opening to the first valve chamber 214, wherein the respective second valve needle 216 engages through this opening in the first valve chamber 214 and abuts against the first valve needle 212.
- the second valve pins 216 abut on a side of the first valve needle 212 facing away from the actuator 223. In this way, movement of the first valve needle 212 is transmitted to the second valve needles 216, i. when the actuator 223 moves the first valve needle 212 from the first position to the second position, thereby closing the first sealing seat 220, the second valve pins 216 are also moved to the second position and the second sealing seat 224 is opened in each second valve chamber 218.
- the first sealing seat 220 and the second sealing seats 224 are oppositely directed and the second valve chambers 218 are arranged in the direction of movement of the first valve needle 212 in the second position in the illustration below the first valve chamber 214.
- valve housing 210 four ports 230, 232, 234, 236 are formed, wherein a first port 230 with a second valve chamber 218, a second port 232 with the other second valve chamber 218, a third port 234 with the first valve chamber 214 and one of second valve chambers 218 and the fourth port 236 with the first valve chamber 214 and the other second valve chamber 218 is connected.
- first position the first terminal 230 and the second terminal 232 are closed and the third terminal 234 and the fourth Port 236 via the first valve chamber 214 connected to each other.
- the third port 234 is connected to the first port 230 via one of the second valve chambers 218 and the fourth port 236 is connected to the second port 232 via the other second valve chambers 218.
- the abutment surfaces between the first valve needle 212 and the second valve needles 216 are formed as sealing surfaces.
- the second valve chambers 218 are sealingly separated from one another and from the first valve chamber 214.
- This switching valve realizes a sealing seat parallel circuit and obtains its static definiteness about the fact that there is an idle stroke between the second valve pins 216 and the first valve needle 212.
- the idle state of the switching valve is in the de-energized state of the actuator 223, wherein all the valve needles 212, 216 are in the respective first position in which the first sealing seat 220 is open and the second sealing seats 224 are closed.
- the spring force of the two second valve springs 226 is overcome and the second sealing seats 224 are opened in parallel.
- the first sealing seat 220 is closed by the first valve needle 212.
- the first connection 230 is connected to the pressure storage chamber 12
- the second connection 232 is connected to the leakage line 14
- the third connection 234 is connected to the booster chamber 32 of the pressure booster 18
- the fourth connection 236 is connected to the spring chamber 34 of the pressure booster 18.
Landscapes
- 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)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006039264A DE102006039264A1 (de) | 2006-08-22 | 2006-08-22 | Kraftstoffeinspritzvorrichtung mit Druckverstärker |
| PCT/EP2007/006499 WO2008022681A1 (de) | 2006-08-22 | 2007-07-21 | Kraftstoffeinspritzvorrichtung mit druckverstärker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2057372A1 true EP2057372A1 (de) | 2009-05-13 |
| EP2057372B1 EP2057372B1 (de) | 2010-09-15 |
Family
ID=38846838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07786246A Not-in-force EP2057372B1 (de) | 2006-08-22 | 2007-07-21 | Kraftstoffeinspritzvorrichtung mit druckverstärker |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2057372B1 (de) |
| AT (1) | ATE481566T1 (de) |
| DE (2) | DE102006039264A1 (de) |
| WO (1) | WO2008022681A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392771A (zh) * | 2011-04-07 | 2012-03-28 | 欧阳光耀 | 高压共轨柴油机轨压增强原理及装置 |
| DE102014210779A1 (de) | 2014-06-05 | 2015-12-17 | Volkswagen Aktiengesellschaft | Kraftstoffeinspritzvorrichtung |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59185866A (ja) * | 1983-04-06 | 1984-10-22 | Hitachi Zosen Corp | 燃料噴射制御装置 |
| US4603671A (en) * | 1983-08-17 | 1986-08-05 | Nippon Soken, Inc. | Fuel injector for an internal combustion engine |
| DE19910970A1 (de) * | 1999-03-12 | 2000-09-28 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung |
| DE19939429A1 (de) * | 1999-08-20 | 2001-03-01 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung |
| DE10063545C1 (de) * | 2000-12-20 | 2002-08-01 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung |
| DE102004053421A1 (de) * | 2004-11-05 | 2006-05-11 | Robert Bosch Gmbh | Kraftstoffeinspritzvorrichtung |
| JP4218630B2 (ja) * | 2004-11-22 | 2009-02-04 | 株式会社デンソー | 内燃機関用燃料噴射装置 |
-
2006
- 2006-08-22 DE DE102006039264A patent/DE102006039264A1/de not_active Withdrawn
-
2007
- 2007-07-21 DE DE502007005071T patent/DE502007005071D1/de active Active
- 2007-07-21 EP EP07786246A patent/EP2057372B1/de not_active Not-in-force
- 2007-07-21 WO PCT/EP2007/006499 patent/WO2008022681A1/de not_active Ceased
- 2007-07-21 AT AT07786246T patent/ATE481566T1/de active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2008022681A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102006039264A1 (de) | 2008-02-28 |
| EP2057372B1 (de) | 2010-09-15 |
| ATE481566T1 (de) | 2010-10-15 |
| WO2008022681A1 (de) | 2008-02-28 |
| DE502007005071D1 (de) | 2010-10-28 |
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