EP1531258A2 - Kraftstoffeinspritzventil - Google Patents
Kraftstoffeinspritzventil Download PDFInfo
- Publication number
- EP1531258A2 EP1531258A2 EP04105673A EP04105673A EP1531258A2 EP 1531258 A2 EP1531258 A2 EP 1531258A2 EP 04105673 A EP04105673 A EP 04105673A EP 04105673 A EP04105673 A EP 04105673A EP 1531258 A2 EP1531258 A2 EP 1531258A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- drive piston
- nozzle needle
- actuator
- piston
- control
- 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.)
- Withdrawn
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 47
- 238000002347 injection Methods 0.000 claims abstract description 63
- 239000007924 injection Substances 0.000 claims abstract description 63
- 238000002485 combustion reaction Methods 0.000 description 16
- 239000012530 fluid Substances 0.000 description 5
- 230000001960 triggered effect Effects 0.000 description 5
- 230000004913 activation Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000002996 emotional effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Images
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
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
- F02M2200/703—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic
- F02M2200/704—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic with actuator and actuated element moving in different directions, e.g. in opposite directions
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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
- F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
- F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
Definitions
- the invention relates to a fuel injection system with a Nozzle needle, a controllable actuator, an inlet to the Supplying fuel and a control room.
- the common rail injection to call that an electronically controllable High pressure injection system with a common manifold (Common rail). This is the fuel via injection valves the combustion chambers under a high Pressure supplied. The opening and closing of the injectors This is controlled by actuators that are after the electromagnetic or according to the piezoelectric principle can work.
- Common rail an electronically controllable High pressure injection system with a common manifold (Common rail).
- This is the fuel via injection valves the combustion chambers under a high Pressure supplied.
- the opening and closing of the injectors This is controlled by actuators that are after the electromagnetic or according to the piezoelectric principle can work.
- DE 101 31 953 A1 is a metering valve of a storage injection system with a high-pressure inlet, a nozzle needle as well a control room described. Furthermore, the metering valve an outlet throttle and an inlet throttle, the a connection between the high-pressure inlet and the control room holds.
- the outlet throttle connects the control room with a control valve, which has a valve seat and a Valve ball has. Is an injection of fuel take place, the control valve by means of an actuator such actuates that the valve ball lifts off from its valve seat, whereby over the drain throttle a connection between the control room and a low pressure area of the metering valve arises, so that the pressure in the control room decreases.
- a metering valve with a hydraulic Transmission element known.
- This metering valve has an actuator, at one end of a primary piston rests. Below the primary piston is a hydraulic chamber, at the opposite of the primary piston Side adjacent to a secondary piston, on which a nozzle needle is attached. If the actuator is activated, it presses against the primary piston, causing the in the hydraulic chamber located fluid displaced in the direction of the secondary piston becomes. At the same time the nozzle needle is out of their seat lifted, so that the injection space is opened and the Fuel can be discharged. Also, this known metering device has one due to its number of components high complexity, which for a compact design of a Dosing valve is disadvantageous.
- the task is performed by a fuel injection valve with the Characteristics of claim 1 solved.
- Preferred developments the metering valve according to the invention are in the dependent Claims specified.
- the fuel injection valve (hereinafter also called metering valve) a Nozzle needle, a controllable actuator, an inlet for feeding of fuel and having a control room.
- the Control chamber is of an axially displaceable drive piston and a control piston, wherein the actuator with the drive piston is in active connection.
- the control piston, the from the drive piston is included as part of the nozzle needle formed and has at least one end face, which the Control room on one side at least partially limited, thereby a deflection of the drive piston in one direction Deflection of the nozzle needle in the opposite direction causes.
- the actuator may preferably be a Actuate piezo actuator, which is controlled by a control unit can be.
- the nozzle needle according to the invention can be attached to a Valve seat fitting nozzle needle tip on the control piston have opposite end.
- the actuator is included driven by a signal of the present invention,
- the actuator stretches in the direction of the control room in which can be located as a fluid fuel. Press here the actuator against the drive piston, preferably directly abuts the actuator, so that a pressure built up in the control room becomes. At the same time, the fluid exercises, which is almost incompressible is on the adjacent areas of the control room a power out.
- the nozzle needle - like the drive piston - Is axially displaceable with the control piston causes the force acting on the end face of the control room a Displacement of the nozzle needle or the control piston.
- the nozzle needle in Hubumledge to the deflection of the drive piston moves axially. That means that at Deflection of the drive piston in the direction of the nozzle needle tip moves the nozzle needle in the opposite direction.
- the control piston shifts along the drive piston, at least in which the control piston comprehensive Cylindrical area is formed.
- the drive of the actuator ends, so the actuator and the shortened Pressure in the control room drops, so that the nozzle needle in Direction of the nozzle needle tip and the drive piston in the Move the opposite direction axially.
- a first spring element which comprises by the drive piston is in operative connection with the control piston and acts one Displacement of the control piston opposite.
- the spring element it can be various springs, such as Compression springs, disc springs or bourdon tubes.
- the spring element has the following function: In rest position, that is, when the actuator is not driven is, the nozzle needle with its nozzle needle tip reliably pressed against the valve seat by the spring element, with no fuel from the metering valve in the Combustion chamber passes.
- the spring element is preferably disposed within the cylindrical drive piston being, being on one side against the control piston is applied and biased against this. Will now the actor triggered, created in the control room, an increased pressure.
- the nozzle needle stands according to an advantageous embodiment of the invention with a high-pressure area in connection, in which the injected Fuel is located, for example, via a High pressure pump and a common rail (common manifold) is being transported to the inflow.
- the high pressure pump can Here, the fuel under a pressure up to about 2000 bar in the common rail, which feed the metering valve fueled.
- the inlet is with the high pressure area connected, preferably immediately along the nozzle needle can run. Does the nozzle needle lift off? Valve seat, the fuel passes under a high pressure from the high pressure area in the combustion chamber, in which a finely atomised, even fuel distribution at predominantly air-distributing mixture formation is achieved.
- the metering valve In the just described operation of the metering valve it is an inward opening metering valve. Naturally the present invention is also to the outside opening metering valve applicable. The main difference is that in the case of the latter valve in the Closed position, where no injection takes place, the actuator is controlled, so that the nozzle needle tip on the valve seat firmly attached. If an injection takes place, then the actuator is shortened via the corresponding control, whereby the drive piston in the direction of the actuator and the nozzle needle with the control piston in the direction of the nozzle needle tip shifts.
- the drive piston guided at least in one area in a cylinder is.
- the cylinder may preferably be in one section directly on the drive piston and in another section abut the nozzle needle.
- the nozzle needle is thus twice passed to the one in the area of the control piston the drive piston and in its below the control piston lying area through the cylinder.
- the drive piston is in an area formed as a cylinder, at least part of the Control piston and the first spring element comprises. At the the actuator facing side of the drive piston directly abut the actuator. It makes sense, such a Drive piston form as an injection molded part.
- the spring can in the way that the actuator is designed throughout Operation is claimed to pressure.
- the space in which the second spring element is located be filled with a fluid which at least part of the Covered actor.
- a thermal coupling between the actuator, the second spring and an adjacent one Housing achieved, causing the actuator to heat the housing well can deliver.
- the cylinder points to the actuator facing an annular surface on which the second spring element, that facing the drive piston at its the actuator Side preferably includes, can rest.
- an additional spring element which is covered by the drive piston, in operative connection with the control piston and a deflection of the control piston counteracts.
- the metering valve has two springs inside the drive piston different hardness. These can be so on each other Be agreed that initially at lower fluid pressure in the control chamber the nozzle needle only against the force of the softer Additional spring element is raised. At one after inside opening metering valve means that the metering valve just opens a little and initially a little Fuel quantity is injected. By such a pilot injection a combustion in the combustion chamber is triggered, the combustion pressure rises slightly.
- the main injection follows when on the end face of the control piston a greater force acts as the spring force of the harder Spring element (in this case, the spring force of the first spring element).
- the main injection quantity becomes high Pressure injected into the already triggered combustion.
- the thus extended total injection time leads with the subsequent main injection amount to a softer combustion and thus to a stable idle and reduced Pollutant formation.
- a metering valve advantage is such a metering valve advantage.
- the lever is between the actuator and the drive piston arranged a plunger, the has a lever on the side facing the drive piston side.
- the housing of the metering valve has a Hole on, in which the plunger is received.
- the lever lies on the side opposite the control chamber side of the drive piston on.
- the pestle on the lever abut directly on the actuator on the opposite side and is triggered by the activation of the actuator in the direction of the drive piston emotional. At the same time the lever transmits the from the plunger outgoing force on the drive piston, which the nozzle needle is moved axially.
- the Drive piston compensation holes on. These ensure that during each stroke movement of the nozzle needle or the control piston pressure equalization within the drive piston can take place.
- the compensation bores are preferably on the side facing away from the control chamber side of the drive piston arranged.
- the use of a nozzle needle of advantage the surrounded by a nozzle body with a free end on a heat protection element is arranged.
- the heat protection sleeve according to the invention which preferably Made of stainless steel, the temperature of the nozzle caps can be lowered by about 50 ° C, so that the hardness at Nozzle seat lessens and thus the life of the metering valve increases.
- the nozzle needle can here, for example be designed as a pin nozzle, which in the Spray opening of the nozzle body protrudes (in the closed position).
- a nozzle needle tip is preferably included Engines with pre-chamber or vortex chamber (indirect injection) to use.
- Engines with pre-chamber or vortex chamber indirect injection
- a trained with a hole nozzle nozzle needle to use as this is a particularly fine distribution achieved the fuel in the combustion chamber.
- the nozzle needle For example, at its lower end - at the nozzle needle tip - be designed cone-shaped, so they on the likewise conical nozzle needle seat surface of the nozzle body fits, resulting in a reliable seal can be.
- the metering valve can, for example, as Einlochdüse or be designed as a multi-hole nozzle.
- the one-hole nozzle in this case has only one injection opening in the nozzle body on, which in the direction of the nozzle axis or laterally thereto can run.
- the multi-hole nozzle can be eight, for example Injection openings which symmetrically on the nozzle tip are arranged.
- the metering valve according to the invention can However, both on an injection valve and on a Refer metering valve of any other kind.
- an inwardly opening fuel injection valve is shown represented in the form of an injection valve, which is in the closed position.
- the injection valve 1 has a nozzle needle 2, which at one end with a Nozzle needle tip rests on a nozzle needle seat surface.
- the nozzle needle 2 with a Control piston 7 is formed by a drive piston. 6 is included.
- the drive piston 6 is located on one side directly to a controllable actuator 3, wherein the actuator. 3 is in operative connection with the drive piston 6.
- the actuator 3 is preferably formed as a piezoelectric actuator.
- the drive piston 6 is hollow cylindrical designed.
- the hollow cylindrical end of the drive piston 6 includes the control piston 7.
- As the nozzle needle 2 is also the drive piston 6 axially displaceable.
- the injection valve 1 has a hollow cylinder 10 and a fuel-filled control chamber 5, the to one side of the drive piston 6 with an annular surface eleventh and the control piston 7 is limited.
- the control piston 7 is in this case formed with an annular end face 8, the immediately adjacent to one side of the control room 5.
- the End face 8, which faces the nozzle needle tip 2, and the annular surface 11 of the drive piston 6 extend in the closed position of the injection valve 1 flush with each other.
- the hollow cylinder 10 includes in its upper portion the drive piston 6. In the lower part of the hollow cylinder 10 is immediately at the nozzle needle 2 at.
- the hollow cylinder 10 has to two cylindrical recesses 25,26 on which a Level 24 merge.
- the second, lower recess 26 has a smaller diameter than the first, upper Recess 25 on.
- the nozzle needle 2 led in the second recess 26 .
- the nozzle needle 2 is thus performed twice, at the bottom of the cylindrically shaped drive piston 6 and at the bottom of the hollow cylinder 10th In the first recess 25 of the drive piston 6 is guided.
- the annular step 24 delimits the control chamber 5.
- a first spring element 9 is arranged, which is in operative connection with the control piston 7 and a deflection of the Control piston 7 counteracts.
- the spring element 9 is biased, where it is on one side on the control piston 7 and at the other side abuts a wall of the drive piston 6.
- a second, also biased spring element 12 is arranged, which the Drive piston 6 comprises at its upper region.
- the hollow cylinder 10 has on the side facing the actuator 3 a Ring surface on which the second spring element 12 rests.
- the injection nozzle 1 has an inlet for supplying Fuel on, but not in this sectional view is shown.
- the feed is fuel in a high Pressure supplied, for example, via a high-pressure pump and enters a common rail in the injection nozzle 1.
- the High pressure pump for example, a radial piston pump be whose drive shaft via a timing belt or directly is driven by the engine camshaft (not in the figures ) Shown.
- the injection valve 1 has one with the Inflow connected pressure chamber 19, in which with a high pressure fuel is located.
- the pressure chamber 19 runs directly in the present embodiment along the nozzle needle 2, wherein the pressure chamber 19 of a nozzle body 16 is surrounded.
- the nozzle body 16 indicates the nozzle tip 2 a free end (nozzle tip), which with Injection openings is formed, in the sectional view of Fig. 1 are not shown.
- Actuator 3 with drive piston 6 and hollow cylinder 10 are located in the illustrated Embodiment in a high-pressure region, which means that they are surrounded by fuel.
- a housing 17th arranged, which the hollow cylinder 10, the second spring element 12 and the actuator 3 includes.
- a nozzle retaining nut 18 provided, the nozzle body 16 and the lower Encloses the housing 17.
- the activation of the actuator 3 ends, it shortens the actuator 3 and the drive piston 6 is in the direction of the actuator 3 shifted, wherein the second spring element 12, the movement of the actuator 3 is supported in its original position.
- the control piston 7 moves down in the direction of nozzle needle tip 2 in the closed position of Injector 1, since the control chamber 5 is a lower pressure on the end face 8 of the control piston 7 exerts as the opposite Force of the first spring element 9.
- the nozzle needle 2 is reliable on the valve seat pressed, leaving a connection between the combustion chamber and the pressure chamber 19 is broken and thus the Injection process is completed.
- the control is carried out by an unillustrated control unit, which in the present invention also a Injection process with pilot injection can control.
- the actuator 3 is only briefly actuated, whereby the nozzle needle 2 is slightly raised and not the entire opening cross-section is released for injection. Consequently a pre-combustion is triggered in the combustion chamber.
- the Needle stroke at the pre-injection can be up to about 50 microns and be at the main injection up to about 300 microns.
- FIG. 2 is another alternative embodiment of a Einspitzventils 1, which in the basic features a has similar operation, already described in Figure 1 has been.
- the injection valve is 1 2 according to the Einspitzventil 1 of Figure 1 educated. It is an inward-opening valve with a nozzle needle 2, with a control piston 7 in the upper portion is formed, a fuel-filled Control chamber 5, an actuator 3, a cylindrical drive piston 6, in which the control piston 7 and a spring element 9 are arranged.
- the injection valve is 1 2 according to the Einspitzventil 1 of Figure 1 educated. It is an inward-opening valve with a nozzle needle 2, with a control piston 7 in the upper portion is formed, a fuel-filled Control chamber 5, an actuator 3, a cylindrical drive piston 6, in which the control piston 7 and a spring element 9 are arranged.
- FIG. 1 shows injector 1 facing control chamber 5, arranged on the control piston 7 end face 8, a Housing 17, a hollow cylinder 10, a nozzle body 16, a Nozzle clamping nut 18, and an inlet 4 with a high-pressure bore 22 on, in which the fuel in one along the nozzle needle 2 extending pressure chamber 19 is passed.
- a plunger 13 is arranged, the on the drive piston 6 side facing a lever 14 has.
- the lever 14 is located in a high-pressure chamber 20, wherein the lever 14 is rotatable perpendicular to the plane of the drawing is stored and designed as a foot.
- the foot is lying with a support area on the actuator 3 facing Ring surface of the cylinder 10 and with a second support area on the drive piston 6.
- the drive piston 6 also has compensation holes 15 in the upper area.
- the plunger 13 is located directly on the actuator 3, below a low pressure space 21 is arranged.
- the actuator 3 is in Contrary to the article of Figure 1 in a dry environment in positioned in a low pressure area.
- a seal is provided which, for example, from a O-ring or a bellows made of metal.
- the injection valve 1 between the nozzle body 16 and the housing 17 an adapter 23 which is connected to the hollow cylinder 10 is axially clamped, creating an unwanted axial Movement of the hollow cylinder 10 is avoided during operation becomes.
- the plunger 13 moves towards the control room 5.
- the lever 14 exercises the drive piston 6 and the hollow cylinder 10 from a force.
- the drive piston 6 of the hollow cylinder 10th is not axially movable toward the nozzle needle tip, rotates the lever 14 by a few degrees in the clockwise direction around his Rotary axis, in which he is in contact with the drive piston. 6 remains.
- the drive piston 6 in the direction shifted the nozzle needle tip, causing the nozzle needle 2 due to the hydraulic force in the control chamber 5 axially in Moves towards actuator 3.
- the nozzle needle tip lifts off Valve seat from, so that in the pressure chamber 19 is located Fuel is injected into the combustion chamber.
- the drive signal of the actuator 3 is stopped so that the actuator 3 shortened to its original length.
- Lever 14, plunger 13 and drive piston 6 move to their initial positions while the nozzle needle tip 2 is pressed onto the valve seat and thus the injection openings 30 are closed.
- injector is described on any type of metering valve applicable.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
- Fig. 1
- ein Ausführungsbeispiel eines Dosierventils in Schnittansicht und
- Fig. 2
- ein weiteres Ausführungsbeispiel eines Dosierventils in Schnittansicht.
Claims (11)
- Kraftstoffeinspritzventil (1) mit einer Düsennadel (2), einem ansteuerbaren Aktor (3), einem Zulauf (4) zum Zuführen von Kraftstoff, einem Steuerraum (5), der von einem axial verschiebbaren Antriebskolben (6), der in Wirkverbindung mit dem Aktor (3) steht, und einem zumindest eine Stirnfläche (8) aufweisenden Steuerkolben (7) begrenzt ist, der als Teil der Düsennadel (2) ausgebildet ist und vom Antriebskolben (6) umfasst ist, wobei die Stirnfläche (8) den Steuerraum (5) an einer Seite wenigstens teilweise begrenzt, wodurch eine Auslenkung des Antriebskolbens (6) in eine Richtung eine Auslenkung der Düsennadel (2) in die entgegengesetzte Richtung bewirkt.
- Kraftstoffeinspritzventil (1) nach Anspruch 1,
dadurch gekennzeichnet, dass ein erstes Federelement (9), das durch den Antriebskolben (6) umfasst ist, in Wirkverbindung mit dem Steuerkolben (7) steht und einer Auslenkung des Steuerkolbens (7) entgegen wirkt. - Kraftstoffeinspritzventil (1) nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass der Antriebskolben (6) zumindest in einem Bereich in einem Zylinder (10) geführt ist. - Kraftstoffeinspritzventil (1) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass der Antriebskolben (6) mit einer Ringfläche (11) den Steuerraum (5) begrenzt. - Kraftstoffeinspritzventil (1) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass ein zweites Federelement (12) zwischen dem Aktor (3) und dem Zylinder (10) angeordnet ist. - Kraftstoffeinspritzventil (1) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass zwischen dem Aktor (3) und dem Antriebskolben (6) ein Stößel (13) angeordnet ist, der an der dem Antriebskolben (6) zugewandten Seite einen Hebel (14) aufweist. - Kraftstoffeinspritzventil (1) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass der Antriebskolben (6) Ausgleichsbohrungen (15) aufweist. - Kraftstoffeinspritzventil (1) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass der Zylinder (10) ein Hohlzylinder (10) ist. - Kraftstoffeinspritzventil (1) nach Anspruch 8,
dadurch gekennzeichnet, dass der Hohlzylinder (10) mindestens zwei zylinderförmige Ausnehmungen (25,26) aufweist, die über eine Stufe (24) ineinander übergehen. - Kraftstoffeinspritzventil (1) nach Anspruch 9,
dadurch gekennzeichnet, dass die Stufe (24) ringförmig ist und den Steuerraum (5) begrenzt. - Kraftstoffeinspritzventil (1) nach Anspruch 9,
dadurch gekennzeichnet, dass in der ersten Ausnehmung (25) der Antriebskolben (6) und in der zweiten Ausnehmung (26) die Düsennadel (2) geführt ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10353045 | 2003-11-13 | ||
DE2003153045 DE10353045A1 (de) | 2003-11-13 | 2003-11-13 | Kraftstoffeinspritzventil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1531258A2 true EP1531258A2 (de) | 2005-05-18 |
EP1531258A3 EP1531258A3 (de) | 2006-12-27 |
Family
ID=34428716
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04105673A Withdrawn EP1531258A3 (de) | 2003-11-13 | 2004-11-10 | Kraftstoffeinspritzventil |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1531258A3 (de) |
DE (1) | DE10353045A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008017538A1 (de) * | 2006-08-07 | 2008-02-14 | Robert Bosch Gmbh | Kraftstoffinjektor mit direkter nadelsteuerung und servoventil-unterstützung |
EP1887213A3 (de) * | 2006-08-07 | 2009-05-13 | Robert Bosch Gmbh | Kraftstoffinjektor mit direkter Nadelsteuerung und Servoventil-Unterstützung |
DE102005035671B4 (de) * | 2005-07-29 | 2009-06-18 | Continental Automotive Gmbh | Kraftstoffinjektor für eine Brennkraftmaschine |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004031308B4 (de) * | 2004-06-29 | 2013-05-23 | Robert Bosch Gmbh | Hydraulischer Koppler |
DE102005041994B4 (de) * | 2005-09-05 | 2017-12-14 | Robert Bosch Gmbh | Kraftstoffinjektor mit direkt betätigbarem Einspritzventilglied und zweistufiger Übersetzung |
DE102005041996B4 (de) * | 2005-09-05 | 2017-07-27 | Robert Bosch Gmbh | Kraftstoffinjektor mit direkt betätigbarem Einspritzventilglied und Verfahren zur Ansteuerung des Einspritzventilgliedes |
DE102005054361A1 (de) * | 2005-11-15 | 2007-05-24 | Fev Motorentechnik Gmbh | Hochdruckkraftstoffinjektor |
JP4270294B2 (ja) | 2007-03-05 | 2009-05-27 | 株式会社デンソー | 燃料噴射弁 |
JP4270293B2 (ja) | 2007-03-05 | 2009-05-27 | 株式会社デンソー | 燃料噴射弁 |
DE102009024595A1 (de) | 2009-06-10 | 2011-03-24 | Continental Automotive Gmbh | Einspritzventil mit Übertragungseinheit |
DE102009024596A1 (de) * | 2009-06-10 | 2011-04-07 | Continental Automotive Gmbh | Einspritzventil mit Übertragungseinheit |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19519191A1 (de) * | 1995-05-24 | 1996-12-19 | Siemens Ag | Einspritzventil |
US5697554A (en) * | 1995-01-12 | 1997-12-16 | Robert Bosch Gmbh | Metering valve for metering a fluid |
DE19950760A1 (de) * | 1999-10-21 | 2001-04-26 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
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2003
- 2003-11-13 DE DE2003153045 patent/DE10353045A1/de not_active Ceased
-
2004
- 2004-11-10 EP EP04105673A patent/EP1531258A3/de not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5697554A (en) * | 1995-01-12 | 1997-12-16 | Robert Bosch Gmbh | Metering valve for metering a fluid |
DE19519191A1 (de) * | 1995-05-24 | 1996-12-19 | Siemens Ag | Einspritzventil |
DE19950760A1 (de) * | 1999-10-21 | 2001-04-26 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005035671B4 (de) * | 2005-07-29 | 2009-06-18 | Continental Automotive Gmbh | Kraftstoffinjektor für eine Brennkraftmaschine |
WO2008017538A1 (de) * | 2006-08-07 | 2008-02-14 | Robert Bosch Gmbh | Kraftstoffinjektor mit direkter nadelsteuerung und servoventil-unterstützung |
EP1887213A3 (de) * | 2006-08-07 | 2009-05-13 | Robert Bosch Gmbh | Kraftstoffinjektor mit direkter Nadelsteuerung und Servoventil-Unterstützung |
US7946509B2 (en) | 2006-08-07 | 2011-05-24 | Robert Bosch Gmbh | Fuel injector with direct needle control and servo valve support |
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EP1531258A3 (de) | 2006-12-27 |
DE10353045A1 (de) | 2005-06-23 |
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