EP2054614A1 - Kraftstoffinjektor mit kolbenrückholung eines druckübersetzerkolbens - Google Patents
Kraftstoffinjektor mit kolbenrückholung eines druckübersetzerkolbensInfo
- Publication number
- EP2054614A1 EP2054614A1 EP07787148A EP07787148A EP2054614A1 EP 2054614 A1 EP2054614 A1 EP 2054614A1 EP 07787148 A EP07787148 A EP 07787148A EP 07787148 A EP07787148 A EP 07787148A EP 2054614 A1 EP2054614 A1 EP 2054614A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure booster
- booster piston
- pressure
- fuel
- chamber
- 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
- 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
- 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
- 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
- F02M57/026—Construction details of pressure amplifiers, e.g. fuel passages or check valves arranged in the intensifier piston or head, particular diameter relationships, stop members, arrangement of ports or conduits
-
- 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
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
- F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
- F02M59/105—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive hydraulic drive
-
- 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
- F02M2547/00—Special features for fuel-injection valves actuated by fluid pressure
- F02M2547/001—Control chambers formed by movable sleeves
-
- 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
- F02M63/0014—Valves characterised by the valve actuating means
- F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
-
- 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
- F02M63/0014—Valves characterised by the valve actuating means
- F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
- F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators
-
- 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
- F02M63/004—Sliding valves, e.g. spool valves, i.e. whereby the closing member has a sliding movement along a seat for opening and closing
-
- 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
- F02M63/0043—Two-way valves
-
- 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
- F02M63/0045—Three-way valves
Definitions
- the invention relates to a fuel injector for injecting fuel into a combustion chamber of an internal combustion engine according to the preamble of claim 1.
- a fuel injector which contains a control valve for a pressure booster.
- the pressure booster has a working space which is separated by a pressure booster piston from a differential pressure chamber.
- the pressure change in the differential pressure chamber of the pressure booster via a servo valve, which is associated with a this activating switching valve.
- a spring element is accommodated, which encloses a lower portion of the pressure booster piston, which is formed in a smaller diameter than the upper portion of the pressure booster piston.
- the spring element is supported with one side against the upper portion of the pressure booster piston and with the other side against the injector. By the spring element a return movement of the pressure booster piston is achieved.
- Disadvantage of this arrangement is that a pre-assembly of pressure booster piston and spring element is not possible.
- this arrangement space disadvantages, since the outer diameter of the spring element must be selected smaller than the large piston diameter.
- An inventively embodied fuel injector for injecting fuel into a combustion chamber of an internal combustion engine comprises an injection valve member for opening and closing at least one injection port and a pressure booster, with which under system pressure fuel is compressed to injection pressure.
- the pressure booster is controlled via a first control valve and the injection valve member via a second control valve, wherein the pressure booster a pressure booster piston comprises, which is associated with a spring element, which is supported with one side on the injector and the other side on the pressure booster piston.
- the pressure booster piston defines a compression chamber, a differential pressure chamber and a control chamber, wherein the control chamber is arranged at the opposite end of the compression chamber of the pressure booster piston and the spring element is received in the control chamber and the spring element is supported on the one hand on the injector and on the other hand on the pressure booster piston.
- the spring element is preferably designed as a compression spring coil spring, which tapers conically to the side on which it is supported on the pressure booster piston. Due to the conical taper on the side on which the spring element is supported against the pressure booster piston, it is avoided that the spring element at the upper portion of the pressure booster piston, which it encloses, rubs and thus contributes to the wear of the pressure booster piston or of the spring element.
- a spring plate is mounted on the pressure booster piston, against which the spring element is supported.
- the spring plate is preferably against a ring element which is received in a groove on the pressure booster piston.
- the spring plate comprises a cylindrical shoulder which surrounds the ring element. Due to the spring plate, it is possible to initially slide the spring element over the upper portion of the pressure booster piston for assembly and then to mount the spring plate on the upper portion of the pressure booster piston.
- the assembly of the spring plate is preferably carried out with the ring element which is received in the groove on the pressure booster piston.
- the ring element is preferably a snap ring.
- a chamfer is preferably formed on this, over which the snap ring is threaded. Thereafter, the snap ring is moved on the upper portion of the pressure booster piston until it snaps into the groove. Subsequently, the spring plate is pressed by means of the spring element against the ring element, so that the cylindrical section slides around the ring element. As a result, a stable seat of the spring plate is achieved.
- the spring element is supported with the end opposite the spring plate on a ring which rests on a shoulder on the Injektorge- housing.
- the ring has an inner diameter which is larger than the diameter of the upper portion and smaller than the diameter of the central portion of the pressure booster piston.
- the spring element is biased together with the spring plate and the ring element is threaded onto the upper portion of the pressure booster piston until it engages in the groove.
- the prestressed spring element is supported with one side against the ring, which rests on the central portion, and with the other side against the spring plate.
- the pressure booster piston is preferably made in one piece and includes an upper portion made in a first diameter, a middle portion made in a second diameter, and a lower portion made in a third diameter.
- the second diameter, in which the central portion is made, is larger than the first diameter of the upper portion and the third diameter of the lower portion.
- control chamber In order to operate the fuel injector, the control chamber is hydraulically connected to the compression chamber, wherein in the connection a check valve is received, so that a backflow of the fuel from the compression chamber is prevented in the control chamber.
- the hydraulic connection of the control chamber to the compression space is formed as a bore in the pressure booster piston.
- the differential pressure chamber via the first control valve with a fuel inlet or a fuel return can be connected.
- the first control valve is designed as a 3/2-way valve.
- FIG. 1 shows a hydraulic diagram of a fuel injector designed according to the invention
- FIG. 2 shows a sectional representation of a fuel injector designed according to the invention
- FIG. 3 shows an enlarged view of the pressure booster piston according to FIG. 2.
- Figure 1 shows a hydraulic diagram of an inventively designed fuel injector.
- the control chamber 6 encloses an upper portion 8 of a pressure booster piston 9.
- the control chamber 6 is limited on the one hand by the injector housing 10 and on the other hand by a first shoulder 11 of a central portion 12 of the pressure booster piston.
- a spring element 13 is received in the control chamber 6 according to the invention, which encloses the upper portion 8 of the pressure booster piston 9.
- the spring element 13 is supported with one side against a spring plate 14 in the upper portion 8 of the pressure booster piston 9 and with the other side against a ring 15.
- the ring 15 is held by the injector housing 10.
- the spring element 13 is preferably designed as a compression spring coil spring.
- the first control valve 17 is a 3/2-way valve. Actuates the first control valve 17 via an electrically controllable actuator. This can be, for example, an electromagnet or a piezoactuator. Also, any further, known in the art, fast switching actuator unit can be used as an actuator.
- the control chamber 6 via the supply line 16 and a channel 18 with a differential pressure chamber 19 is connected.
- the differential pressure chamber 19 is bounded by a second shoulder 20 of the central portion 12 of the pressure booster piston 9.
- the second shoulder 20 of the first shoulder 11 is opposite.
- the differential pressure chamber 19 encloses a lower portion 21 of the pressure booster piston.
- the differential pressure chamber 19 is connected via the channel 18 with a fuel return 22.
- the fuel return 22 preferably opens into the fuel tank.
- a compression space 23 is limited. Via a channel 24, which is formed for example as a bore in the pressure booster piston 9, the compression space 23 is filled with fuel. In order to avoid that fuel from the compression chamber 23 via the channel 24 flows back into the control chamber 6, a check valve 25 is received in the channel 24.
- the second control valve 31 is a 2/2-way valve, with which a connection from the Wegieitung 29 in a fuel return 32 can be released or closed.
- the second fuel return 32 is connected, for example, to the fuel return 22 or directly to the fuel tank 1.
- the second control valve 31 is generally driven by an electrically actuated actuator.
- the actuator may be, for example, a solenoid valve or a piezoelectric actuator. Also, as with the first control valve 17, any further, known in the art fast switching actuator unit can be used.
- an injection valve member 33 In the second control chamber 28 opens an injection valve member 33. With the injection valve member 33 is at least one injection port 34 can be closed or released. When the injection opening 34 is released, fuel flows out of the nozzle chamber 27 via the injection opening 34 into a combustion chamber 35 of an internal combustion engine.
- the first control valve 17 is switched so that the connection from the differential pressure chamber 19 via the channel 18 in the fuel return 22 is released.
- the pressure in the differential pressure chamber 19 decreases.
- the pressing force acting on the first shoulder 11 at the central portion 12 is greater than the force acting on the second shoulder 20 and the lower portion 21 of the pressure booster piston 9.
- the pressure booster piston 9 is displaced into the compression space 23.
- the fuel contained in the compression chamber 23 is compressed to injection pressure.
- the compressed fuel flows via the high-pressure line 26 into the nozzle chamber 27 and the second control chamber 28.
- the injection valve member 27 can lift out of its seat and thus release the at least one injection opening 34, the second control valve 31 so switched, the connection from the drain line 29 is released in the fuel return 22.
- the fuel from the second control chamber 28 flows.
- the pressure in the second control chamber 28 decreases and the standing under injection pressure fuel acts on the injection valve member 33, that this is lifted from its seat. Fuel is injected into the combustion chamber 35 of the internal combustion engine.
- the second control valve 31 is switched so that the connection is closed by the drain line 29 in the fuel return 32.
- the pressure in the second control chamber 28 increases to injection pressure.
- the injection valve member is placed in its seat and thus closes the at least one injection opening 34.
- the movement of the injection valve member 33 is assisted by a spring element 36.
- the second spring element 36 is preferably a helical spring designed as a compression spring, which on the one hand rests on a shoulder on the injection valve member 33 and on the other hand supported on the injector housing 10.
- the second spring element 36 is formed so that the movement of the injection valve member 33 is thereby supported in its seat.
- the first control valve 17 is switched so that the connection from the control chamber 6 via the supply line 16 and the channel 18 is released into the differential pressure chamber 19.
- fuel under system pressure flows from the control chamber 6 into the differential pressure chamber 19.
- system pressure builds up. Supported by the spring element 13 of the pressure booster piston 9 is moved to its original position. That is, the booster piston 9 is moved to the first control room 6.
- this increases the volume of the compression space 23.
- the pressure in the compression space 23 decreases.
- the check valve 25 opens and fuel flows via the channel 24 in the pressure booster piston 9 from the control chamber 6 into the compression space 23.
- the pressure booster piston 9 has reached its starting position, that is the position of the pressure booster piston 9 is such that the volume in the compression space 23 has become maximum, the next injection process can start.
- FIG. 2 shows a fuel injector designed in accordance with the invention in more detail.
- the first control valve 17 is designed as a solenoid valve.
- the first control valve 17 comprises a coil 40 which is received in a magnetic core 41.
- the coil 40 via terminal pins 42 with a control device, which is not shown here, connectable.
- the first control valve 17 further comprises an armature 43, which is connected to a valve spool 44.
- the first control valve 17 can be switched so that either the supply line 16 is connected from the control chamber 6 with the channel 18 in the differential pressure chamber 19, or that this connection is closed and for a connection of the channel 18 is released from the differential pressure chamber 19 with the fuel return 22.
- the second control valve 31 is formed in the embodiment shown in FIG 2 as a solenoid valve.
- the second control valve 31 comprises a second coil 45, which is received in a second magnetic core 46.
- the second control valve 31 comprises a second armature 47, which is connected to a valve member 48. With the second valve member 48, a connection can be closed or released from the drain line 29 in the fuel return 32.
- FIG. 3 shows an enlarged view of the pressure booster 7 of the fuel injector shown in FIG.
- the spring element 13 comprises a conical portion 54. This avoids that the spring element 13 grinds at the upper portion 8 of the pressure booster piston 9. So that the spring element 13 can act as a return spring for the pressure booster piston 9, this is preferably designed as a compression spring coil spring which acts with one side on the injector 10 and on the other side on the pressure booster piston 9.
- the spring element 13 is provided on the one hand via the ring 15 and the shoulder 50 against the injector 10 and on the other hand via the spring plate 14 against the upper portion 8 of the pressure booster piston 9. So that the spring plate 14 holds at the upper portion 8 of the pressure booster piston 9, this is through the spring force of the spring element 13 is pressed against a ring element 55. A displacement of the ring member 55 on the upper portion 8 of the pressure booster piston 9 is avoided in that this is received in a groove 56 at the upper portion 8 of the pressure booster piston 9.
- the ring element 55 is preferably a snap ring.
- An advantage of the assembly of the spring element 18 with the ring 15 and the spring plate 14 is that the pressure booster piston 9 can be preassembled together with the spring element 13. As a result, the later assembly in the fuel injector 5 is facilitated.
- the ring 15 is threaded over the upper portion 8 of the pressure booster piston 9.
- the inner diameter of the ring 15 is chosen so that this is greater than the diameter di of the upper portion 8 of the pressure booster piston 9 and smaller than the second diameter d2 of the central portion 12 of the pressure booster piston 9. Because the second diameter d 2 of the central portion 12 is greater than the first diameter di of the upper portion 8 of the pressure booster piston 9, forms at the transition from the upper portion 8 to the central portion 12, the first shoulder 11.
- the ring 15 Since the inner diameter of the ring 15 is smaller than the second diameter d2 of the central portion 12 of the pressure booster piston 9, the ring 15 rests on the shoulder 11 during assembly.
- the spring element 13 is pushed over the upper portion 8 of the pressure booster piston 9 until it rests on the ring 15.
- the conical region 54 of the spring element 13 is designed so that the last winding of the spring element 13 has an inner diameter which corresponds to the first diameter di of the upper portion 8 of the pressure booster piston 9. As a result, the spring element 13 is centered on the upper portion 8 at the same time.
- the spring plate 14 is pushed onto the upper portion 8 of the pressure booster piston 9. Finally, the ring member 55 is mounted.
- a chamfer 57 is formed at the upper portion 8 of the pressure booster piston 9.
- the spring element 55 is preferably designed so that it can be spread. In this way, the ring member 55 can be pushed over the chamfer 57 on the upper portion 8 of the pressure booster piston 9. Along the chamfer 57, the ring member 55 expands. Once the ring member 55 has reached the groove 56, it snaps into this. As a result, the ring member 55 is fixedly connected to the upper portion 8 of the pressure booster piston 9. Subsequently, the spring plate 14 is pressed by the spring force of the spring element 13 against the ring member 55. So that the spring plate 14 is not tilted at an uneven load by the spring element 13, a cylindrical shoulder 58 is preferably formed on this, which surrounds the ring member 55. As a result, a tight fit of the spring plate 14 is achieved.
- the thus pre-assembled pressure booster piston 9 with the spring element 13 is then inserted into the middle housing part 51. So that the ring 15 rests on the shoulder 50 on the middle housing part 51, the outer diameter of the ring 15 is greater than the second diameter d 2 of the middle section of the pressure booster piston 9.
- the spring element 13 is biased. This bias serves to move the pressure booster piston 9 into the control chamber 6 during operation. The movement of the pressure booster piston 9 is terminated by the fact that this on a formed in the upper housing portion 52 end face 59 which limits the control chamber 6, strikes.
- a throttle element 61 is formed in the channel 24.
- the throttle element 61 of the fuel flow is damped in channel 24, so that a pulsation of the check valve 25 and thus wear in the region of the check valve 25 is avoided.
- the lower section 21 of the pressure booster piston 9 is embodied in a third diameter d3, which is smaller than the second diameter d 2 .
- the injection pressure to which the fuel in the compression chamber 23 is compressed is dependent on the ratio of the second diameter d2 of the central portion 12 to the third diameter d3 of the lower portion 21 of the pressure booster piston.
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 |
|---|---|---|---|
| DE102006038840A DE102006038840A1 (de) | 2006-08-18 | 2006-08-18 | Kraftstoffinjektor mit Kolbenrückholung eines Druckübersetzerkolbens |
| PCT/EP2007/056865 WO2008019910A1 (de) | 2006-08-18 | 2007-07-06 | Kraftstoffinjektor mit kolbenrückholung eines druckübersetzerkolbens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2054614A1 true EP2054614A1 (de) | 2009-05-06 |
| EP2054614B1 EP2054614B1 (de) | 2011-06-01 |
Family
ID=38573435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07787148A Active EP2054614B1 (de) | 2006-08-18 | 2007-07-06 | Kraftstoffinjektor mit kolbenrückholung eines druckübersetzerkolbens |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US8210454B2 (de) |
| EP (1) | EP2054614B1 (de) |
| JP (1) | JP5049346B2 (de) |
| CN (1) | CN101506513B (de) |
| AT (1) | ATE511602T1 (de) |
| DE (1) | DE102006038840A1 (de) |
| WO (1) | WO2008019910A1 (de) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007002760A1 (de) | 2007-01-18 | 2008-07-24 | Robert Bosch Gmbh | Kraftstoffinjektor mit integriertem Druckverstärker |
| DE102007002761A1 (de) | 2007-01-18 | 2008-07-24 | Robert Bosch Gmbh | Kraftstoffinjektor mit integriertem Druckverstärker |
| DE102008040342A1 (de) | 2008-07-11 | 2010-01-14 | Robert Bosch Gmbh | Druckverstärker für eine Kraftstoffeinspritzeinrichtung |
| FI122557B (fi) * | 2009-04-02 | 2012-03-30 | Waertsilae Finland Oy | Mäntämoottorin polttoaineenruiskutusjärjestely |
| DE102010039051A1 (de) * | 2010-08-09 | 2012-02-09 | Robert Bosch Gmbh | Einspritzvorrichtung |
| DE102010039048A1 (de) * | 2010-08-09 | 2012-02-09 | Robert Bosch Gmbh | Einspritzvorrichtung |
| CN101984247B (zh) * | 2010-11-04 | 2013-07-31 | 中国第一汽车集团公司 | 增压共轨喷油系统 |
| CN102943726A (zh) * | 2012-10-22 | 2013-02-27 | 安徽中鼎动力有限公司 | 一种设有分配泵的燃油喷射系统及包括该系统的柴油机 |
| US9562505B2 (en) | 2013-06-11 | 2017-02-07 | Cummins Inc. | System and method for control of fuel injector spray |
| EP2857670B1 (de) * | 2013-10-04 | 2018-12-12 | Continental Automotive GmbH | Kraftstoffeinspritzdüse |
| US20180179995A1 (en) | 2016-12-23 | 2018-06-28 | Denso Corporation | Internal combusition engine control apparatus |
| DK179521B1 (en) * | 2017-12-13 | 2019-02-05 | Hans Jensen Lubricators A/S | A large slow-running two-stroke engine, a method of lubricating it, and an injector with a step-wise hydraulic pumping system for such engine and method |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE436811A (de) * | 1939-01-20 | |||
| DE1018635B (de) | 1951-03-27 | 1957-10-31 | Exact Weight Scale Company | Einrichtung zum Pruefen einer Reihe aufeinanderfolgender Prueflinge hinsichtlich der Abweichung einer messbaren physikalischen Eigenschaft von einem Sollwert |
| DE3210735A1 (de) * | 1981-12-18 | 1983-06-30 | Robert Bosch Gmbh, 7000 Stuttgart | Hydraulischer zweikreis-tandem-hauptbremszylinder |
| JPS601369A (ja) * | 1983-06-16 | 1985-01-07 | Nippon Soken Inc | 燃料噴射弁 |
| DE4413579A1 (de) * | 1994-04-19 | 1995-10-26 | Teves Gmbh Alfred | Elektronisch regelbares Bremsbetätigungssystem |
| DE19546647B4 (de) * | 1995-12-14 | 2006-07-06 | Robert Bosch Gmbh | Hydraulische Bremsanlage für Straßenfahrzeuge, insbesondere Personenkraftwagen |
| US6007160A (en) * | 1997-02-21 | 1999-12-28 | Kelsey-Hayes Company | Electrohydraulic brake booster and method of controlling same for smooth brake pedal feel |
| JPH11263214A (ja) * | 1998-01-13 | 1999-09-28 | Jidosha Kiki Co Ltd | ブレーキ倍力システム |
| JP2001153602A (ja) * | 1999-11-30 | 2001-06-08 | Fuji Oozx Inc | エンジンバルブの変位測定装置 |
| ATE280901T1 (de) | 2000-01-27 | 2004-11-15 | Keith Trevor Lawes | Brennstoffeinspritzventil |
| JP2002154424A (ja) * | 2000-11-20 | 2002-05-28 | Aisin Seiki Co Ltd | 液圧ブレーキ装置 |
| DE10063545C1 (de) * | 2000-12-20 | 2002-08-01 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung |
| DE10218635A1 (de) * | 2001-05-17 | 2002-11-28 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung |
| DE10218904A1 (de) * | 2001-05-17 | 2002-12-05 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung |
| DE10123914B4 (de) * | 2001-05-17 | 2005-10-20 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung mit Druckübersetzungseinrichtung und Druckübersetzungseinrichtung |
| FR2825058B1 (fr) * | 2001-05-25 | 2003-09-19 | Bosch Sist De Frenado Sl | Servomoteur a deux sauts differencies fixe et variable |
| DE10158951A1 (de) * | 2001-12-03 | 2003-06-12 | Daimler Chrysler Ag | Mit Druckübersetzung arbeitendes Einspritzsystem |
| DE10251679A1 (de) * | 2002-11-07 | 2004-05-19 | Robert Bosch Gmbh | Druckverstärker mit hubabhängiger Bedämpfung |
| EP1613856B1 (de) * | 2003-04-02 | 2008-07-09 | Robert Bosch Gmbh | Servoventilangesteuerter kraftstoffinjektor mit druckübersetzer |
| DE102004005451A1 (de) * | 2004-02-04 | 2005-08-25 | Robert Bosch Gmbh | Kraftstoffeinspritzsystem für Brennkraftmaschinen |
| DE102004017304A1 (de) * | 2004-04-08 | 2005-10-27 | Robert Bosch Gmbh | Servoventilangesteuerter Kraftstoffinjektor |
-
2006
- 2006-08-18 DE DE102006038840A patent/DE102006038840A1/de not_active Withdrawn
-
2007
- 2007-07-06 US US12/377,906 patent/US8210454B2/en not_active Expired - Fee Related
- 2007-07-06 JP JP2009523222A patent/JP5049346B2/ja not_active Expired - Fee Related
- 2007-07-06 WO PCT/EP2007/056865 patent/WO2008019910A1/de not_active Ceased
- 2007-07-06 CN CN2007800306744A patent/CN101506513B/zh not_active Expired - Fee Related
- 2007-07-06 AT AT07787148T patent/ATE511602T1/de active
- 2007-07-06 EP EP07787148A patent/EP2054614B1/de active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2008019910A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2009545701A (ja) | 2009-12-24 |
| DE102006038840A1 (de) | 2008-02-21 |
| EP2054614B1 (de) | 2011-06-01 |
| US20110168812A1 (en) | 2011-07-14 |
| US8210454B2 (en) | 2012-07-03 |
| CN101506513A (zh) | 2009-08-12 |
| JP5049346B2 (ja) | 2012-10-17 |
| WO2008019910A1 (de) | 2008-02-21 |
| CN101506513B (zh) | 2012-08-08 |
| ATE511602T1 (de) | 2011-06-15 |
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