WO2004111431A1 - Kraftstoffeinspritzsystem für brennkraftmaschinen - Google Patents
Kraftstoffeinspritzsystem für brennkraftmaschinen Download PDFInfo
- Publication number
- WO2004111431A1 WO2004111431A1 PCT/DE2004/000665 DE2004000665W WO2004111431A1 WO 2004111431 A1 WO2004111431 A1 WO 2004111431A1 DE 2004000665 W DE2004000665 W DE 2004000665W WO 2004111431 A1 WO2004111431 A1 WO 2004111431A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure
- fuel
- injection system
- low
- injector
- Prior art date
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 166
- 238000002347 injection Methods 0.000 title claims abstract description 58
- 239000007924 injection Substances 0.000 title claims abstract description 58
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 25
- 230000008878 coupling Effects 0.000 claims description 25
- 238000010168 coupling process Methods 0.000 claims description 25
- 238000005859 coupling reaction Methods 0.000 claims description 25
- 239000002828 fuel tank Substances 0.000 claims description 9
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 239000013078 crystal Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000243 solution Substances 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
- 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
- F02M63/0003—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure
- F02M63/0007—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure using electrically actuated 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
- 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/0603—Injectors peculiar thereto with means directly operating the valve needle using piezoelectric or magnetostrictive operating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/002—Arrangement of leakage or drain conduits in or from injectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- 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
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/46—Valves
Definitions
- injection timing and the injection quantity are calculated in the electronic control unit and 'implemented by an injector at each engine cylinder.
- the injector has the task of setting the start of injection and the injection quantity.
- control and leakage quantities of the injector or injectors are discharged via an unpressurized fuel return and fed into the fuel tank.
- the leak oil in the injector must have a defined pressure.
- These injectors include piezo-controlled common rail injectors.
- a hydraulic coupler is arranged between the piezo actuator and the control valve, which increases the travel of the piezo actuator. A coupler room is available for this purpose, the filling of which requires a defined leakage oil pressure that is above the ambient pressure.
- DE-A 199 52 513 discloses a fuel injection system for internal combustion engines with at least one injector, which is connected to an unpressurized fuel return are known. Means for maintaining a leak oil pressure in the injector (s) are present between the injector (s) and the fuel return. In particular, the means for maintaining a leakage oil pressure in the or in the injectors are one or more pressure maintenance valves.
- DE-A 101 04 634 relates to a fuel injection system for internal combustion engines with a plurality of injectors, the injectors each having a high-pressure connection and a low-pressure connection, the low-pressure connections opening into a manifold, with a pressure-maintaining valve arranged between the manifold and a drainless fuel return , wherein the manifold is designed as a pressure accumulator.
- the pressure load on the pressure holding valve for holding the pressure on the low pressure side of the injectors is very high at up to 20 bar.
- the manifold (return line) as well as the actuator and any bellows, if any, are exposed to high loads due to this pressure.
- the fuel injection system according to the invention avoids the disadvantages occurring in the prior art and enables pressure relief of several system components, in particular of the actuator and / or the manifold and / or the pressure control valve and / or the bellows. It is also advantageous that the fuel injection system according to the invention can be used for Cornmon Rail systems in which either at least one pressure maintaining valve or at least one electric fuel pump sets the injector coupler space under a pressure required for filling. If necessary, the pressure control valve can be omitted and cost savings can result, the scope of functions being retained even without pressure control valves. Further advantages of the fuel injection system according to the invention are that no additional moving internal parts are required and thus wear and tear and a high manufacturing outlay are avoided. Furthermore, no additional adjustment processes compared to the fuel injection system according to the prior art are required.
- a fuel injection system for internal combustion engines with a plurality of injectors, the injectors each having a high-pressure connection and a low-pressure connection, the low-pressure connections opening into at least one collecting line, with one between the collecting line and an unpressurized fuel return arranged means for maintaining the fuel pressure, wherein at least one throttle is arranged between the low pressure connection of each injector and the means for maintaining the fuel pressure.
- the at least one throttle ensures that the pressure required on the low-pressure side of the injector is set at high load points. At low load points, this ensures the means for maintaining the fuel pressure. Since the throttle represents the high pressures, only the low pressures of the means for maintaining the fuel pressure are required after the throttle, which then also brings about the substantial relief of the entire low-pressure system.
- the fuel injection system according to the invention has the further advantage that the production requirement for the at least one throttle is very low.
- all injectors are connected to a common manifold via their low-pressure connections.
- a connecting line can be present between the collecting line and the respective injector in order to be able to make the collecting line short and of simple geometry.
- a separate manifold can be assigned to each cylinder bank of a V engine.
- This embodiment of the fuel injection system according to the invention may have advantages with regard to the installation space required and the costs for connecting the low-pressure connections of the injectors to the respective manifold.
- the use of several mutually independent manifolds requires the arrangement of at least one throttle per manifold between the low pressure connection of the respective injector and the respective means for maintaining the fuel pressure, in particular the arrangement of a throttle in each manifold.
- the means for maintaining the fuel pressure is a pressure maintaining valve.
- Pressure control valves are proven and mature components that can be used.
- a throttle is preferably used in the fuel injection system according to the invention with a pressure holding valve arranged in front of the injector-side inlet of the pressure control valve. Even with the throttle positioned in front of the pressure control valve, the range of functions of the pressure control valve is retained, but there is a pressure relief of the pressure control valve compared to the prior art.
- the throttle also reduces the pressure on other system components, in particular the manifold, the actuator and the bellows.
- the bellows is designed in such a way that it can accommodate the axial stroke of the actuator for controlling the injector, in particular a piezo actuator.
- the bellows is firmly connected to the actuator and the actuator bore, so that a fluid-tight seal of the actuator module with respect to the other areas of the injector is achieved.
- the means for maintaining the fuel pressure is an electric fuel pump.
- Electric fuel pumps are pumps which are known and proven in the prior art and which are designed and arranged in the tank of a motor vehicle in a modular design and which are used in particular in internal combustion engines in order to supply them with sufficient fuel in all operating states.
- a throttle is preferably arranged in the manifold upstream of the electric fuel pump.
- the functional scope is also available without a pressure control valve, so that no pressure control valve is required and costs can thus be saved.
- the high-pressure connections of the injectors are supplied with fuel by at least one common rail, so that the advantages of the fuel injection system according to the invention also come into play in what are known as common rail injection systems.
- the injectors each contain a piezo element for controlling the injector and a hydraulic translator for translating the piezo element stroke.
- the piezo element stroke can preferably be transferred to an injector needle via a hydraulic medium, in particular fuel, in a coupler space of the hydraulic translator, the coupler space being able to be filled with the hydraulic medium via the at least one throttle.
- the at least one throttle present in the fuel injection system according to the invention between the low-pressure connection of the injector and the means for maintaining the fuel pressure (in particular the pressure-maintaining valve or the electric fuel pump) sets the pressure required for filling the coupler space at high load points.
- the pressure control valve or the electric power material pump Since the high coupler filling pressures are represented by the throttle, only the low pressures of the pressure control valve or the electric fuel pump are required after the throttle, which then also brings about the substantial relief of the entire low-pressure system. With the choice of the throttle diameter, the pressure maintaining valve opening pressure or the pressure of the electric fuel pump, the pressure for the coupler filling can be applied if necessary.
- FIG. 1 is a schematic representation of a fuel injection system according to the prior art
- Fig. 3 shows an inventive fuel injection system with pressure control valve
- Fig. 4 shows a section through a fuel injector, which is acted upon by a high-pressure fuel via a high-pressure accumulator (common rail) and is controlled by an actuator designed as a piezo actuator.
- FIG. 1 shows a schematic illustration of a fuel injection system according to the prior art.
- each cylinder 1 is assigned an injector (not shown), which has a low-pressure connection 2.
- the low pressure connections 2 open into a manifold 3.
- the manifold 3 is designed as a pressure accumulator in which the pressure required on the low pressure side of the injector is maintained.
- the manifold 3 is connected to the unpressurized fuel return 5 via a schematically illustrated pressure-maintaining valve 4, so that an identical, there is fuel pressure above the ambient pressure.
- the pressure control valve opens only at a pressure of 10 bar, so that the fuel pressure in the manifold 3 is at least 10 bar.
- FIG 2 shows an inventive fuel injection system with an electric fuel pump.
- An internal combustion engine 36 which is only indicated schematically in FIG. 2, comprises six cylinders 1, each of which is supplied with fuel under high pressure via a fuel injector 38 shown in FIG. 4.
- the fuel injectors shown in more detail in FIG. are arranged in the cylinder head region 37 of the internal combustion engine 36.
- an electric fuel pump 6 is arranged between the manifold 3 and the drainless fuel return 5, which is connected to a fuel tank 35 of a vehicle, as a means for maintaining the fuel pressure.
- a throttle 7 is located in the collecting line 3 in front of the electric fuel pump 6. With this combination of throttle 7 and electric fuel pump 6, no pressure-maintaining valve is required to maintain the power pressure on the low-pressure side of the injectors.
- the electronic fuel pump 6 only has to deliver fuel with a low pressure. For example, with a cross section of the throttle 7 of 0.5 mm, a 5 bar electric fuel pump 6 is sufficient.
- FIG 3 shows a fuel injection system according to the invention with a pressure holding valve.
- the internal combustion engine 36 can be configured, for example, as a 6-cylinder internal combustion engine, the embodiment variant as a 6-cylinder engine being shown only by way of example.
- the fuel injection system proposed according to the invention can also supply internal combustion engines with four, five, eight or 10 or 12 cylinders.
- a pressure-maintaining valve 8 is provided between the manifold 3 and the unpressurized fuel return 5, which opens into the fuel tank 35 of a motor vehicle, as a means of maintaining the fuel pressure.
- a throttle 7 is located in the collecting line 3 in front of the pressure holding valve 8. With this combination of throttle 7 and pressure holding valve 8, the pressure holding valve 8 is relieved of pressure so that it can have a lower opening pressure.
- a 5 bar pressure holding valve is sufficient to maintain the required fuel pressure on the low-pressure side of the injectors.
- 4 shows a fuel injector which is connected to a high-pressure storage space (common rail) and which can be actuated via an actuator designed as a piezo actuator.
- the fuel injector 38 shown in FIG. 4 comprises a high-pressure system 9 and a low-pressure system 10.
- the fuel injector 38 is actuated via an actuator 11, which in the illustration according to FIG. 4 is provided with a schematically indicated piezo-crystal stack 12, which is located at Power supply is long.
- the piezo crystal stack 12 acts on an actuating piston 18.
- the actuating piston 18 acts on a hydraulic translator 13.
- the hydraulic translator 13 increases the only small stroke of the piezo crystal stack 12 when the actuator 11 is energized.
- the hydraulic translator 13 comprises an actuating piston 15, the actuating piston 15 of which End face 16 protrudes into the hydraulic coupling space 14 of the hydraulic translator 13.
- the piezo crystal stack 12 of the actuator 11 and the coupling space 14 of the hydraulic translator 13 can be enclosed both by a thin wall 43 and by a bellows 42, with which the relative movement of the piezo crystal stack 12 when it is energized and the actuating piston connected to it 18 relative to the hydraulic coupling space 14 is made possible.
- the hydraulic coupling space 14 is enclosed by a housing 44 and acted upon by the coupling space pressure p K.
- the low-pressure connection 2 extends from a system room 20, which encloses both the piezo-crystal stack 12 and the hydraulic translator 13, 44, to the collecting line 3.
- the respective low-pressure connections 2 open into the collecting line 3, as shown in FIGS. 2 and 3 further cylinder 1 of the internal combustion engine 36.
- the manifold 3 extends to the means for maintaining the fuel pressure, which according to the embodiment variants indicated schematically in FIGS. 2 and 3 can either be designed as a pressure maintaining valve 8 or through the electric fuel pump 6 for supplying fuel to the internal combustion engine 36 or can be formed to act on a high pressure pump 34.
- the throttle element 7 is accommodated in the manifold 3, into which the respective low-pressure connections 2 of the cylinders 1 open, starting from the fuel injectors 38 and the means 6, 8 for maintaining the fuel pressure in the system space 20.
- the low-pressure connection 2 can be designed, for example, as a screw connection 17, so that a leakage-free one at the pressures prevailing within the system pressure space 20 Sealing between the system room 20 and in the low pressure connection 2 is guaranteed.
- the hydraulic booster 13 comprises a housing 44 which delimits the hydraulic coupling space 14.
- the housing 44 is supported on the one hand by means of a helical spring on a support disk received on the actuating piston 18 of the actuator 11 and, on the other hand, is biased by a further helical spring on a support disk which is received on the actuating piston 15.
- the diameter of the actuating piston 18 is larger than the diameter of the actuating piston 15, so that hydraulic pressure transmission is achieved by interposing the hydraulic coupling space 14.
- the actuating piston 15 acts on a guide piston 23.
- the guide piston 23 in turn is guided in an outlet channel 22 which is provided in the housing 39 of the fuel injector 38.
- the system room 20 and the control room 24 are connected to one another via the drain channel 22.
- the drain channel 22, which connects the system room 20 and the control room 24 to one another, is closed or released via a closing element 19.
- the closing element 19 is in its closed position in the illustration according to FIG. his closing element seat 21, which is formed at the mouth of the outlet channel 22 in the control chamber 24.
- the hemispherical closing element 19 is prestressed via a spring element 26.
- the spring element 26, which can be a plate spring, is supported on an end face 29 of a needle-shaped injection valve member 27.
- the control chamber 24 is always acted upon by fuel under high pressure via a high-pressure line, which is connected to one of the high-pressure connections 40 of a high-pressure collecting chamber 31 (common rail).
- the high-pressure plenum 31 is in turn supplied with fuel under high pressure via a supply line 32 via a high-pressure pump 34 and stores it.
- the high-pressure pump 34 can be connected upstream of an electric fuel pump 6 acting as a pre-feed pump.
- the system space 20 of the fuel injector 38 on its low-pressure side 10 can be delimited on the one hand by a thin wall 43, on the other hand the system space 20 can also be sealed by a bellows 42.
- the formation of a boundary of the system space 20 above a deformable bellows 42 advantageously offers the possibility of compensating for elongations when the actuator 11 is energized due to a length expansion of the piezo crystal stack 12 while at the same time maintaining the sealing effect.
- the hydraulic coupling space 14 is filled via the pressure prevailing in the system space 20. which encloses the hydraulic coupling space 14, and the actuating piston 15 and the adjusting piston 18 are formed gaps, via which the fuel volume on the low pressure side 10 of the fuel injector 38 also enters the hydraulic coupling space 14 for the first filling thereof.
- the fuel injection system for direct-injection internal combustion engines shown in FIG. 1 comprises a pressure-maintaining valve 8 on the low-pressure side 10 of the fuel injector 38.
- the pressure level required for filling the hydraulic coupling space 14 can be applied via the pressure holding valve 8.
- the pressure level on the low-pressure side 10 of the fuel injector 38 in the system space 20 is dimensioned such that the hydraulic coupling space 14 is filled via the gaps between the housing 44 and the actuating piston 18 on the one hand and via the gap between the actuating piston 15 and the Housing 44 of the pressure booster 13 can be done on the other hand.
- only the low pressures that can be generated by the pressure maintaining valve prevail after the throttle 7, as a result of which the substantial relief of the low pressure side 10 of the fuel injector 38 is achieved.
- fuel is conveyed from the fuel tank 35 to the high-pressure pump 34, in which the fuel is compressed to a very high pressure of approximately 1500 bar and more, via a first fuel feed line 8.1.
- an electric fuel pump 6 is provided, which in this case represents the means for maintaining the pressure, fuel volume flows out of the control chamber 24 into the system chamber when the pressure in the control chamber 24 is relieved 20 analogous to the embodiment of a fuel system with pressure-maintaining valve 8 shown above.
- the fuel flows via the connection 17 into the low-pressure connection 2, which applies to all fuel injectors 38 which correspond to the number of cylinders of the internal combustion engine 36 to be supplied with fuel are provided on this.
- a throttle point 7 is also formed in the manifold 3, into which all the low-pressure connections 2 of the fuel injectors 38 open.
- the throttle point 7 is located at the junction of all low-pressure connections 2 in the collecting line 3 in front of the input end 41 of the electric fuel pump 6 serving as a feed pump.
- the electric fuel pump 6 delivers fuel from the fuel tank 35 and via the second fuel line 6.1 to the high-pressure pump 34 in turn acts on the high-pressure accumulation space 31 (common rail) via the supply line 32 with fuel under very high pressure.
- the fuel level is in the range between approximately 1500 and 1600 bar.
- the throttle point 7 at high load points ensures that, due to the pressure prevailing in the system space 10, the hydraulic coupling space 14 is filled via the leakage gaps between the displacement piston 18 and the housing 44 or the actuating piston 15 and the housing 44.
- the pressure required to fill the coupler can be maintained by the electric fuel pump 6 serving as a pre-feed unit.
- the electric fuel pump 6 serving as a pre-feed unit.
- only the low pressures of the electric fuel pump which can be between 3 and 8 bar, prevail after the throttle point 7. This allows the low-pressure side 10 of the fuel injector 10 to be substantially relieved.
- the pressure in the system space 20 for filling the hydraulic coupling space 14 can be changed through its guide column if necessary. If an electric fuel pump 6 is used together with a high pressure pump 34, the electric fuel pump 6 assigned to the fuel tank serves as a pre-feed unit for the high pressure pump 34, which is not self-priming. In this case, the supply line 6.1 branches off from the fuel line which is assigned to the fuel tank 35 and leads to the high-pressure pump 34.
- both an electric fuel pump 6 and a pressure holding valve 8 can be mechanically relieved in terms of their pressure load at high load points of the internal combustion engine 36, which results in a significant relief of the low pressure system 10 of the fuel injector 38 ,
- the pressure holding valve 8 and the electric fuel pump 6 can therefore be dimensioned smaller in terms of their strength.
- the solution proposed according to the invention avoids the use of additional mechanical components to be manufactured or moved, as a result of which adjustment processes on these additional internal parts to be provided can also be omitted.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE502004004822T DE502004004822D1 (de) | 2003-05-22 | 2004-03-31 | Kraftstoffeinspritzsystem für brennkraftmaschinen |
JP2006529578A JP4532495B2 (ja) | 2003-05-22 | 2004-03-31 | 内燃機関用の燃料噴射系 |
US10/556,310 US7270114B2 (en) | 2003-05-22 | 2004-03-31 | Fuel injection system for internal combustion engines |
EP04724527A EP1642021B1 (de) | 2003-05-22 | 2004-03-31 | Kraftstoffeinspritzsystem für brennkraftmaschinen |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10323177.3 | 2003-05-22 | ||
DE10323177A DE10323177A1 (de) | 2003-05-22 | 2003-05-22 | Kraftstoffeinspritzsystem für Brennkraftmaschinen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004111431A1 true WO2004111431A1 (de) | 2004-12-23 |
Family
ID=33441154
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2004/000665 WO2004111431A1 (de) | 2003-05-22 | 2004-03-31 | Kraftstoffeinspritzsystem für brennkraftmaschinen |
Country Status (9)
Country | Link |
---|---|
US (1) | US7270114B2 (de) |
EP (1) | EP1642021B1 (de) |
JP (1) | JP4532495B2 (de) |
KR (1) | KR101016133B1 (de) |
CN (1) | CN100394022C (de) |
AT (1) | ATE371810T1 (de) |
DE (2) | DE10323177A1 (de) |
ES (1) | ES2289503T3 (de) |
WO (1) | WO2004111431A1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004060555A1 (de) * | 2004-12-16 | 2006-06-22 | Robert Bosch Gmbh | Vorrichtung zur Ermittlung der Kraftstoffrücklaufmenge eines Injektors einer Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine |
DE102005033634A1 (de) * | 2005-07-19 | 2007-01-25 | Robert Bosch Gmbh | Hochdruck-Kraftstoffpumpe für ein Kraftstoff-Einspritzsystem einer Brennkraftmaschine |
DE102006061690A1 (de) | 2006-12-28 | 2008-07-03 | Robert Bosch Gmbh | Druckhalteventil mit Membranelement |
DE102007052092B4 (de) * | 2007-10-31 | 2011-06-01 | Continental Automotive Gmbh | Verfahren und Kraftstoffsystem zum Steuern der Kraftstoffzufuhr für eine Brennkraftmaschine |
DE102008001743A1 (de) | 2008-05-14 | 2009-11-19 | Robert Bosch Gmbh | Kraftstoffeinspritzsystem |
JP5099034B2 (ja) * | 2009-02-12 | 2012-12-12 | 株式会社デンソー | 燃料噴射弁 |
GB201117160D0 (en) * | 2011-10-05 | 2011-11-16 | Rolls Royce Goodrich Engine Control Systems Ltd | Fuel system |
US11280306B1 (en) | 2021-01-15 | 2022-03-22 | Caterpillar Inc. | Fuel injector having dry-running protection valve and fuel system using same |
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US4213434A (en) * | 1978-01-18 | 1980-07-22 | Robert Bosch Gmbh | Fuel injection system |
US6112721A (en) * | 1996-08-29 | 2000-09-05 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Fuel injection device |
DE19941703A1 (de) * | 1999-09-02 | 2001-03-08 | Bosch Gmbh Robert | Kraftstoffeinspritzventil für Brennkraftmaschinen |
DE10104634A1 (de) * | 2001-02-02 | 2002-09-19 | Bosch Gmbh Robert | Kraftstoffeinspritzsystem für Brennkraftmaschinen mit verbesserter Druckversorgung der Injektoren |
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US3625192A (en) * | 1969-12-12 | 1971-12-07 | Allis Chalmers Mfg Co | Fuel injection nozzle with hydraulic valve-closing means |
DE2500644C2 (de) * | 1975-01-09 | 1988-07-07 | Klöckner-Humboldt-Deutz AG, 5000 Köln | Kraftstoffeinspritzventil für Brennkraftmaschinen |
JPS57167256U (de) * | 1981-04-16 | 1982-10-21 | ||
DE3516456A1 (de) * | 1985-05-08 | 1986-11-13 | Robert Bosch Gmbh, 7000 Stuttgart | Kraftstoffeinspritzpumpe fuer brennkraftmaschinen |
US5487508A (en) * | 1994-03-31 | 1996-01-30 | Caterpillar Inc. | Injection rate shaping control ported check stop for a fuel injection nozzle |
DE19629646C2 (de) * | 1996-07-23 | 1998-09-10 | Wolf Gmbh Richard | Verfahren und Vorrichtung zur automatischen Identifikation von Komponenten medizinischer Gerätesysteme |
EP1138907B1 (de) * | 2000-04-01 | 2006-10-04 | Robert Bosch GmbH | Kraftstoffeinspritzsystem |
DE10113654A1 (de) * | 2001-03-21 | 2002-09-26 | Bosch Gmbh Robert | Kraftsotffeinspritzeinrichtung für Brennkraftmaschinen |
JP2003021017A (ja) * | 2001-07-10 | 2003-01-24 | Bosch Automotive Systems Corp | 蓄圧式燃料噴射装置 |
DE10145620B4 (de) * | 2001-09-15 | 2006-03-02 | Robert Bosch Gmbh | Ventil zum Steuern von Flüssigkeiten |
DE10154802A1 (de) * | 2001-11-08 | 2003-05-22 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine |
DE10158951A1 (de) * | 2001-12-03 | 2003-06-12 | Daimler Chrysler Ag | Mit Druckübersetzung arbeitendes Einspritzsystem |
JP4244683B2 (ja) * | 2002-06-24 | 2009-03-25 | トヨタ自動車株式会社 | 内燃機関の燃料噴射装置 |
JP2005069135A (ja) * | 2003-08-26 | 2005-03-17 | Toyota Motor Corp | 燃料噴射装置 |
-
2003
- 2003-05-22 DE DE10323177A patent/DE10323177A1/de not_active Withdrawn
-
2004
- 2004-03-31 DE DE502004004822T patent/DE502004004822D1/de not_active Expired - Lifetime
- 2004-03-31 CN CNB2004800141042A patent/CN100394022C/zh not_active Expired - Lifetime
- 2004-03-31 KR KR1020057022157A patent/KR101016133B1/ko active IP Right Grant
- 2004-03-31 EP EP04724527A patent/EP1642021B1/de not_active Expired - Lifetime
- 2004-03-31 ES ES04724527T patent/ES2289503T3/es not_active Expired - Lifetime
- 2004-03-31 AT AT04724527T patent/ATE371810T1/de not_active IP Right Cessation
- 2004-03-31 US US10/556,310 patent/US7270114B2/en not_active Expired - Lifetime
- 2004-03-31 JP JP2006529578A patent/JP4532495B2/ja not_active Expired - Lifetime
- 2004-03-31 WO PCT/DE2004/000665 patent/WO2004111431A1/de active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4213434A (en) * | 1978-01-18 | 1980-07-22 | Robert Bosch Gmbh | Fuel injection system |
US6112721A (en) * | 1996-08-29 | 2000-09-05 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Fuel injection device |
DE19941703A1 (de) * | 1999-09-02 | 2001-03-08 | Bosch Gmbh Robert | Kraftstoffeinspritzventil für Brennkraftmaschinen |
DE10104634A1 (de) * | 2001-02-02 | 2002-09-19 | Bosch Gmbh Robert | Kraftstoffeinspritzsystem für Brennkraftmaschinen mit verbesserter Druckversorgung der Injektoren |
Also Published As
Publication number | Publication date |
---|---|
CN1795326A (zh) | 2006-06-28 |
JP2007500817A (ja) | 2007-01-18 |
KR101016133B1 (ko) | 2011-02-17 |
KR20060006970A (ko) | 2006-01-20 |
EP1642021B1 (de) | 2007-08-29 |
DE502004004822D1 (de) | 2007-10-11 |
ATE371810T1 (de) | 2007-09-15 |
EP1642021A1 (de) | 2006-04-05 |
ES2289503T3 (es) | 2008-02-01 |
US20070012293A1 (en) | 2007-01-18 |
US7270114B2 (en) | 2007-09-18 |
JP4532495B2 (ja) | 2010-08-25 |
CN100394022C (zh) | 2008-06-11 |
DE10323177A1 (de) | 2004-12-09 |
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