EP1252437B1 - Einspritzeinrichtung und verfahren zum einspritzen von fluid - Google Patents
Einspritzeinrichtung und verfahren zum einspritzen von fluid Download PDFInfo
- Publication number
- EP1252437B1 EP1252437B1 EP01909455A EP01909455A EP1252437B1 EP 1252437 B1 EP1252437 B1 EP 1252437B1 EP 01909455 A EP01909455 A EP 01909455A EP 01909455 A EP01909455 A EP 01909455A EP 1252437 B1 EP1252437 B1 EP 1252437B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- injection
- chamber
- amplifier
- valve
- 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.)
- Expired - Lifetime
Links
- 238000002347 injection Methods 0.000 title claims abstract description 77
- 239000007924 injection Substances 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 8
- 239000012530 fluid Substances 0.000 title claims description 19
- 238000007789 sealing Methods 0.000 claims description 5
- 230000003213 activating effect Effects 0.000 claims 1
- 230000000903 blocking effect Effects 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 claims 1
- 239000000446 fuel Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 230000004913 activation Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Classifications
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- 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
- F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
-
- 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
- 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
-
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
- F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
Definitions
- the invention relates to an injection device with a Injector, a pressure booster to reinforce a primary pressure, a first valve device for actuation of the pressure booster and an actuator for actuation the first valve device.
- the invention relates a method for injecting fluid, in which in In a first phase, low-pressure injection takes place and in a second phase a high injection Printing takes place.
- a generic device and a generic method are known.
- a basic requirement for such System is fuel injection with one to make the greatest possible injection pressure.
- a high injection pressure has a positive influence on the function of a motor; for example the pollutant emissions and the Reduced fuel consumption.
- it can be additional an injection with the same system to carry out with lower pressure.
- Such an injection Low pressure can be used, for example, for a pre-injection used, among other things, the noise reduction serves.
- a pressure booster is used to implement the high injection pressure provided by hydraulic translation a primary, for example from a pressure accumulator to Provided pressure in the desired high injection pressure implements.
- a generic pressure boost is particularly related useful with a common rail system.
- “common rail” are the primary pressure generation and decouples the injection.
- the injection pressure is generated by a high pressure pump and in the "rail" (fuel storage) provided for injection.
- a favorable injection course can be done realize, in particular injection pressure and injection quantity independent for each operating point of the engine can be determined from each other.
- the Pressure in the common rail is currently limited to approx. 1600 bar, so that for emission reasons an increase in pressure is desired.
- a pressure booster in combination with A common rail system could therefore give particularly good results deliver.
- With pressure-reinforced common rail systems for refilling the various functional spaces of the pressure booster additional valve devices be provided. According to the state of the art the entire high pressure space in the injector and in the Pressure booster relaxes, resulting in high relaxation losses leads.
- FIG. 5 shows a common rail system in which an injector or a Injector 110 is coupled to a pressure booster 112.
- the control of the Pressure booster 112 takes place via a 2/2-way valve 114, which the pressure in space 134 controls, so that in comparison to the control with a 3/2-valve in the Pressure booster inlet have comparatively low relaxation losses.
- the Hydraulic circuit shown has a bypass path 116 to selectively one Injection with rail pressure or an injection with increased pressure too enable.
- the pressure booster 112 is activated or deactivated by opening or closing valve 114.
- this system is too note that rail pressure is always conducted to the injector 110 via the bypass path 116.
- a jamming of the injector needle or injector valve would therefore be one Generate continuous injection, which can ultimately destroy the engine. It it is therefore desirable to provide an intrinsically safe system which has a structurally determined maximum injection quantity, that is to say one Injection quantity that is not exceeded in the event of damage to a system component can.
- An injection device is known from US Pat. No. 5,622,152, in which an injection with low pressure is done by direct fuel from the accumulator to the Injection valve is guided, and in which an injection takes place at high pressure, by fuel under pressure increased by means of the pressure booster the injection valve is fed.
- a valve 118 is for stroke control via a Flow restrictor 120 connected to a control chamber 122 of the injector 110.
- the Control room 122 is also above a Inlet throttle 124 in connection with the fluid inflow.
- the fluid is also the Pressure chamber 126 fed to the injector 110.
- the pressure booster 112 has a low pressure space 130, one High-pressure space 132 and a differential space 134.
- the differential space 134 is over a Throttle 136 with the which allows fluid transport only in the direction of the injector 126.
- the Pressure booster 112 has a low pressure chamber 130, a high pressure chamber 132 and a difference space 134.
- the difference space 134 is connected via a throttle 136 Pressure accumulator (“Rail”) 138 connected, while the low pressure chamber 130 and the High-pressure chamber 132 directly or via the check valve 128 with the pressure accumulator 138 are connected.
- the pressure accumulator 138 has a four-cylinder engine Connections to four injectors, to which he provides rail pressure.
- the invention enables control of a Pressure amplifier made possible by a valve, with only slight relaxation losses occur, and this is according to the invention with a flow rate limitation Injector combined. It is therefore impossible that the Nozzle needle or the control valve of the injection nozzle for a continuous injection and could ultimately lead to the destruction of the engine.
- the pressure booster has a low pressure chamber, a high pressure chamber and one Difference space, whereby the first valve device with a first connection is connected to the differential space, the first valve device connected to a return system with a second connection and the first valve device is in the first state is open so that the differential space with the return system connected is.
- the piston of the pressure booster is therefore pressure balanced, since the rail pressure is established in the differential space.
- this valve relieves the pressure on the valve Differential chamber. So the pressure booster is activated and an injection with increased pressure can take place.
- the low pressure chamber of the pressure booster with the differential space of the pressure booster over a first throttle and a second valve device connected is, wherein the first throttle and the second valve device are arranged in parallel, the second valve device the flow of a fluid from the differential space to the low pressure space releases and the second valve means the flow a fluid from the low pressure space to the differential space locks.
- the second valve device thus enables that the differential space when the first valve device is open is depressurized, so that an activation of the pressure booster can be done.
- the second valve unit prevents in the differential space an overpressure compared to the low pressure space can build up. About the throttle, the differential space at reset the pressure booster.
- the second valve device is preferably a check valve.
- One such is suitable, the ones described Perform functions of the second valve device.
- the low-pressure chamber of the pressure booster is preferably with the high pressure chamber of the pressure booster via a second Throttle and a check valve connected, the check valve the flow of a fluid from the low pressure space releases to the high pressure chamber and the check valve Flow of a fluid from the high pressure space to the low pressure space locks.
- the check valve is useful so that the Pressure from the high pressure room does not move towards the low pressure room degrades.
- the throttle ensures that the Connection a sufficiently small flow cross-section has so that it does not act as a bypass for an injection can serve. With this measure, an undesired, increased leakage current in the injector, e.g.
- the Throttle can also be through a correspondingly small line or a correspondingly small opening cross section of the Check valve are formed. Basically, the serves Connection of the refilling of the high pressure chamber of the pressure booster when resetting the pressure booster piston.
- the difference space of the Pressure booster with the high pressure chamber of the pressure booster connected via a second throttle and a check valve wherein the check valve is the flow of a fluid from releases the differential space to the high pressure space and that Check valve the flow of a fluid from the high pressure space locks to the difference space.
- the check valve is the flow of a fluid from releases the differential space to the high pressure space and that Check valve the flow of a fluid from the high pressure space locks to the difference space.
- Particular advantages of the invention show up when the pressure booster a flow connection from reaching a certain stroke from the pressure accumulator to the injection nozzle. This prevents, for example, jamming the injector or a jamming of the control valve the injector, a continuous injection and thus the engine is destroyed.
- the pressure booster piston has a pressure surface that also after interrupting the flow connection to the injector the injector supply line is connected. So the remains Pressure booster piston controlled by pressure difference on his End stop. In this way, the corresponding injector switched off in the event of damage.
- the inlet line is closed is provided by a sealing device.
- the two components the sealing device then lead to closure the supply line when the pressure booster piston reaches its maximum Hub.
- a closure the filling path is provided by a slide seal is.
- This slide seal can come from the pressure booster piston and the guide of the pressure booster piston are formed. Closing the supply line can therefore start at a certain point Stroke, which depends on which Place the fluid flow at the high pressure chamber of the pressure booster attaches.
- elastic means for resetting the Booster piston provided. These can either be in Low pressure room, in the differential room or in the high pressure room or be arranged at another suitable location.
- the elastic means can for example by a spring in Low-pressure room can be realized.
- At least one separate one Flow limiter is provided.
- the invention act on the pressure booster at the same time as a flow limiter.
- it can Under certain circumstances it may be useful to have a separate flow limiter to use. This can optionally be in the filling path the high pressure chamber or between the pressure booster and the injector.
- the second valve unit which parallel to the throttle the low pressure chamber of the Pressure booster connects to the differential space, as an overpressure due to the separation of the pressure booster pistons is prevented in the difference space.
- the invention is based on the generic type according to claim 17 Process in that the high pressure under activation a pressure booster is generated by one with a Differential space of the pressure booster and a return system related valve device is opened and that limits the flow rate of the fluid to an injector becomes. It can thus be done by a simple operation a valve device while avoiding high relaxation losses a control, that is an activation or a pressure booster is deactivated.
- the Flow limitation prevents damage to the Motors, which are otherwise due to continuous injection when jamming the nozzle needle or the control valve Injector could be done.
- the method is particularly advantageous when the maximum Injection quantity from the volume of a high-pressure chamber Pressure booster is limited. So the pressure booster is advantageously at the same time as its primary Purpose - the pressure boosting - used as well, in the sense intrinsic safety, to limit the flow rate.
- the injector is stroke-controlled, whereby it is even conceivable that the control valve of the injector from the same control element, preferably a piezo actuator, is controlled, such as the valve device, which the Activates pressure booster.
- a piezo actuator As an actuator can next to a Piezo actuator, for example, also provided a solenoid valve his.
- the invention is based on the knowledge that a system with high intrinsic safety using a control a pressure booster can be provided, without great relaxation losses.
- the pressure booster can thus be activated optionally and it can an injection course shaping can be made.
- an injection course shaping can be made.
- For example can be a pre-injection with low pressure and a Main injection take place under high pressure. So it can for example an advantageous "boot" form of the injection pressure curve can be achieved.
- FIG. 1 is a first embodiment of an inventive Injection device shown.
- a pressure accumulator 10 provides primary pressure. This will fed to a pressure booster 12 in its low pressure chamber 14.
- the pressure booster has 12 a high-pressure space 16 and a differential space 18 on.
- the low pressure chamber 14 is a throttle 20 and a Check valve 22 connected to the high pressure chamber 16.
- the Check valve 22 closes in the direction of the low pressure chamber 14.
- the low pressure chamber 14 is also a throttle 24 and a check valve 26 connected in parallel therewith connected to the differential space 18 of the pressure booster 12.
- the pressure booster piston 28 is by a spring 30 to Force applied for the purposes of the provision.
- the check valve 26 locks in the direction of the differential space 18.
- a valve device is used to control the pressure booster 12 32 provided which is connected to the Differential space 18 of the pressure booster 12 in connection stands.
- the other connection of the valve device 32 is with a return system 34 connected.
- the pressure booster piston 28 With the valve device closed 32, the pressure booster piston 28 is pressure-balanced, since in the differential space 18 via the throttle 24 in the low pressure chamber 14 prevails rail pressure.
- the Pressure booster is deactivated, meaning that it cannot find one Pressure increase instead. Consequently, an injection is with Rail printing possible.
- the pressure booster piston moves 28 according to the amount injected without pressure boosting downward.
- the pressure booster 12 works here like a flow limiter. In particular has the pressure booster piston 28 has a valve seat at its end 36, so that when the maximum stroke is reached, the feed line 38 closes to the injector 40.
- the injector 40 comprises an injection nozzle 42, the pressure chamber 44 with the inlet line 38, which is connected to the high-pressure chamber 16 of the pressure booster 12 is connected, is connected.
- the injector 40 is stroke-controlled, with a control valve 46 on the one hand with a return system 34 and on the other hand via an outlet throttle 48 with a control chamber 50 of the injection nozzle connected is.
- the control room 50 is also above a Inlet throttle 52 in connection with the supply line 38.
- Figure 2 shows a second embodiment of an inventive Injector.
- the differential space 18 of the pressure booster 12 with the high pressure chamber 16 of the pressure booster 12 connected The refilling of the high pressure room 16 thus takes place via this filling path.
- This too is with a throttle 56 and one towards the Differential space 18 provided check valve 58, these components being connected in series.
- FIG 3 is a third embodiment of an inventive Injection device shown. This corresponds largely the first embodiment shown in Figure 1 the invention.
- the sealing seat or sealing device 36 ( Figure 1) for closing the inlet line 38 is, however replaced by a slide valve 60 ( Figure 3), which the filling path 62 from a certain stroke of the pressure booster piston 28 closes.
- Figure 4 shows a fourth embodiment of the invention.
- a separate flow limiter 64 is provided in the connection of the low pressure chamber 14 with the high pressure chamber 18.
- a flow restrictor 66 in the connection between the high pressure chamber 16 of the pressure booster 12 and the injector 40.
- the flow restrictor in the connection between the low pressure chamber 14 and the high pressure chamber 16 of the pressure booster 12 is again a check valve 68 with the Pressure booster 64 connected in series for pressure transmission from the high pressure space 16 into the low pressure space 14 to avoid.
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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)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Jet Pumps And Other Pumps (AREA)
- Nozzles (AREA)
Description
Claims (12)
- Einspritzeinrichtung mit einer Einspritzdüse (42), einem zum Verstärken eines primären Drucks dienenden Druckverstärker (12), der einen Niederdruckraum (14), einen mit der Einspritzdüse (42) verbundenen Hochdruckraum (16) und einen Differenzraum (18) aufweist, und mit einer ersten mit dem Differenzraum (18) verbundenen, von einem Stellelement betätigten Ventileinrichtung (32), durch die zum Ansteuern des Druckverstärkers (12) die Verbindung des Differenzraums (18) mit einem Rücklaufsystem (34) gesteuert wird, wobei die erste Ventileinrichtung (32) in einem ersten Zustand die Verbindung des Differenzraums (18) mit einem Rücklaufsystem (34) öffnet, derart, dass der Druckverstärker (12) aktiviert ist, und in einem zweiten Zustand die Verbindung schließt, derart, dass der Druckverstärker (12) deaktiviert ist, dadurch gekennzeichnet, dass der erste von zwei Anschlüssen der Ventileinrichtung (32) mit dem Differenzraum (18) und der zweite Anschluss mit dem Rücklaufsystem (34) verbunden ist und der Niederdruckraum (14) des Druckverstärkers (12) mit dem Differenzraum (18) des Druckverstärkers (12) über eine erste Drossel (24) verbunden ist, und der Niederdruckraum (14) bzw. der Differenzraum (18) mit dem Hochdruckraum (16) über eine zweite Drossel (20, 56, 64) und ein Rückschlagventil (22, 58, 68) verbunden ist, wobei das Rückschlagventil (22, 58, 68) den Fluss eines Fluids zu dem Hochdruckraum (16) freigibt und vom Hochdruckraum (16) sperrt, und wobei eine Durchflußmengenbegrenzung von Fluid aus dem Hochdruckraum (16) zur Einspritzdüse (42) vorgesehen ist, die durch den Druckverstärker (12) erfolgt.
- Einspritzeinrichtung nach Anspruch 1, Ansprüche, dadurch gekennzeichnet, dass die zweite Ventileinrichtung ein Rückschlagventil (26) ist.
- Einspritzeinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass zur Durchflußmengenbegrenzung der Druckverstärker (12) ab dem Erreichen eines bestimmten Hubs eine Zulaufleitung (38) aus dem Hochdruckraum (16) zu der Einspritzdüse (42) verschließt.
- Einspritzeinrichtung nach Anspruch 3, dadurch gekennzeichnet, dass zum Verschließen der Zulaufleitung (38) ein Dichtsitz (36) vorgesehen ist.
- Einspritzeinrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass zum Verschließen eines Befüllungspfades (62) eine Schieberdichtung (60) vorgesehen ist.
- Einspritzeinrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass mindestens ein Druckverstärkerkolben (28) eine Strömungsverbindung zu einem Injektor (40) steuert.
- Einspritzeinrichtung nach Anspruch 6, dadurch gekennzeichnet, dass der Druckverstärkerkolben (28) in seiner Endstellung eine Strömungsverbindung zum Injektor (40) unterbricht.
- Einspritzeinrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass elastische Mittel (30) zum Rückstellen des Druckverstärkerkolbens (28) vorgesehen sind.
- Einspritzeinrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Druckverstärkerkolben (28) zweiteilig ist.
- Einspritzeinrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass mindestens ein separater Durchflußmengenbegrenzer (64, 66) vorgesehen ist.
- Verfahren zum Einspritzen von Fluid, bei dem in einer ersten Phase eine Einspritzung mit niedrigem Druck erfolgt und in einer zweiten Phase eine Einspritzung mit hohem Druck erfolgt, dadurch gekennzeichnet, dass der hohe Druck unter Aktivierung eines Druckverstärkers (12) erzeugt wird, indem eine mit einem Differenzraum (18) des Druckverstärkers (12) und einem Rücklaufsystem (34) in Verbindung stehende Ventileinrichtung (32) geöffnet wird, und dass die Durchflußmenge eines Fluids zu einer Einspritzdüse (42) begrenzt wird, wobei die maximale Einspritzmenge vom Volumen eines Hochdruckraums (16) des Druckverstärkers (12) begrenzt wird.
- Verfahren nach Anspruch 12, dadurch gekennzeichnet, dass die maximale Einspritzmenge von einem separaten Durchflußbegrenzer (64, 66) begrenzt wird.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10002273A DE10002273A1 (de) | 2000-01-20 | 2000-01-20 | Einspritzeinrichtung und Verfahren zum Einspritzen von Fluid |
DE10002273 | 2000-01-20 | ||
PCT/DE2001/000098 WO2001052916A2 (de) | 2000-01-20 | 2001-01-12 | Einspritzeinrichtung und verfahren zum einspritzen von fluid |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1252437A2 EP1252437A2 (de) | 2002-10-30 |
EP1252437B1 true EP1252437B1 (de) | 2004-09-22 |
Family
ID=7628119
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01909455A Expired - Lifetime EP1252437B1 (de) | 2000-01-20 | 2001-01-12 | Einspritzeinrichtung und verfahren zum einspritzen von fluid |
Country Status (8)
Country | Link |
---|---|
US (1) | US20030127539A1 (de) |
EP (1) | EP1252437B1 (de) |
JP (1) | JP2003520317A (de) |
KR (1) | KR20020074481A (de) |
AT (1) | ATE277279T1 (de) |
DE (2) | DE10002273A1 (de) |
TW (1) | TW558607B (de) |
WO (1) | WO2001052916A2 (de) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10040526A1 (de) * | 2000-08-18 | 2002-03-14 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung |
DE10123911A1 (de) * | 2001-05-17 | 2002-11-28 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung mit Druckübersetzungseinrichtung und Druckübersetzungseinrichtung |
DE50209869D1 (de) * | 2001-05-17 | 2007-05-16 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung |
DE10126686A1 (de) * | 2001-06-01 | 2002-12-19 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung mit Druckverstärker |
DE10149004C1 (de) * | 2001-10-04 | 2003-02-27 | Bosch Gmbh Robert | Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen |
DE10148995A1 (de) * | 2001-10-04 | 2003-04-24 | Bosch Gmbh Robert | Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen |
US6978943B2 (en) * | 2002-01-30 | 2005-12-27 | International Engine Intellectual Property Company, Llc | Governor plate apparatus |
DE10213659A1 (de) | 2002-03-27 | 2003-10-16 | Bosch Gmbh Robert | Einspritzeinrichtung und Verfahren zum Einspritzen von Fluid |
GB0215488D0 (en) | 2002-07-04 | 2002-08-14 | Delphi Tech Inc | Fuel injection system |
JP3931120B2 (ja) * | 2002-07-10 | 2007-06-13 | ボッシュ株式会社 | 蓄圧式燃料噴射装置 |
DE10233088A1 (de) * | 2002-07-19 | 2004-01-29 | Robert Bosch Gmbh | Kraftstoffeinspritzeinrichtung |
DE10249840A1 (de) * | 2002-10-25 | 2004-05-13 | Robert Bosch Gmbh | Kraftstoff-Einspritzeinrichtung für Brennkraftmaschine |
DE10260775A1 (de) | 2002-12-23 | 2004-07-01 | Daimlerchrysler Ag | Kraftstoffversorgungssystem für Verbrennungsmotoren mit Direkteinspritzung |
JP3994990B2 (ja) * | 2004-07-21 | 2007-10-24 | 株式会社豊田中央研究所 | 燃料噴射装置 |
DE102007002760A1 (de) * | 2007-01-18 | 2008-07-24 | Robert Bosch Gmbh | Kraftstoffinjektor mit integriertem Druckverstärker |
US7980224B2 (en) * | 2008-02-05 | 2011-07-19 | Caterpillar Inc. | Two wire intensified common rail fuel system |
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 |
WO2016097799A1 (en) * | 2014-12-19 | 2016-06-23 | Volvo Truck Corporation | Injection system of an internal combustion engine and automotive vehicle including such an injection system |
CN110397533B (zh) * | 2019-07-26 | 2021-03-23 | 重庆红江机械有限责任公司 | 一种柴油机高压燃油电控增压泵 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5898654A (ja) * | 1981-12-07 | 1983-06-11 | Nissan Motor Co Ltd | 燃料噴射装置 |
JP2885076B2 (ja) * | 1994-07-08 | 1999-04-19 | 三菱自動車工業株式会社 | 蓄圧式燃料噴射装置 |
US5537972A (en) * | 1994-07-28 | 1996-07-23 | Servojet Electronics Systems | Fuel injection system having a pressure intensifier incorporating an overtravel safety feature |
DE19636088C2 (de) * | 1996-09-05 | 2003-02-06 | Avl Verbrennungskraft Messtech | Verfahren zur Steuerung der direkten Einspritzung von Kraftstoff |
DE19647304C1 (de) * | 1996-11-15 | 1998-01-22 | Daimler Benz Ag | Kraftstoffeinspritzanlage für eine Brennkraftmaschine |
US5852997A (en) * | 1997-05-20 | 1998-12-29 | Stanadyne Automotive Corp. | Common rail injector |
-
2000
- 2000-01-20 DE DE10002273A patent/DE10002273A1/de not_active Ceased
-
2001
- 2001-01-12 JP JP2001552963A patent/JP2003520317A/ja active Pending
- 2001-01-12 EP EP01909455A patent/EP1252437B1/de not_active Expired - Lifetime
- 2001-01-12 DE DE50103747T patent/DE50103747D1/de not_active Expired - Fee Related
- 2001-01-12 KR KR1020027009284A patent/KR20020074481A/ko not_active Application Discontinuation
- 2001-01-12 WO PCT/DE2001/000098 patent/WO2001052916A2/de not_active Application Discontinuation
- 2001-01-12 US US10/181,481 patent/US20030127539A1/en not_active Abandoned
- 2001-01-12 AT AT01909455T patent/ATE277279T1/de not_active IP Right Cessation
- 2001-01-17 TW TW090101010A patent/TW558607B/zh active
Also Published As
Publication number | Publication date |
---|---|
ATE277279T1 (de) | 2004-10-15 |
JP2003520317A (ja) | 2003-07-02 |
WO2001052916A2 (de) | 2001-07-26 |
DE50103747D1 (de) | 2004-10-28 |
KR20020074481A (ko) | 2002-09-30 |
DE10002273A1 (de) | 2001-08-02 |
EP1252437A2 (de) | 2002-10-30 |
WO2001052916A3 (de) | 2002-02-14 |
TW558607B (en) | 2003-10-21 |
US20030127539A1 (en) | 2003-07-10 |
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