EP0966603A1 - Injection valve with compensating surface - Google Patents
Injection valve with compensating surfaceInfo
- Publication number
- EP0966603A1 EP0966603A1 EP98964377A EP98964377A EP0966603A1 EP 0966603 A1 EP0966603 A1 EP 0966603A1 EP 98964377 A EP98964377 A EP 98964377A EP 98964377 A EP98964377 A EP 98964377A EP 0966603 A1 EP0966603 A1 EP 0966603A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- actuator
- compensating element
- injection valve
- transmission
- compensating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000002347 injection Methods 0.000 title claims description 25
- 239000007924 injection Substances 0.000 title claims description 25
- 230000005540 biological transmission Effects 0.000 claims abstract description 60
- 238000002485 combustion reaction Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 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
- F02M63/0012—Valves
- F02M63/0014—Valves characterised by the valve actuating means
- F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
- F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- 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
- 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
- F02M59/466—Electrically operated valves, e.g. using electromagnetic or piezoelectric operating means
- F02M59/468—Electrically operated valves, e.g. using electromagnetic or piezoelectric operating means using piezoelectric 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
- F02M2200/701—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger mechanical
Definitions
- the invention relates to an injection valve with an actuator and an actuator according to the preamble of patent claim 1.
- Injectors with piezoelectric actuators are used, for example, in automotive engineering.
- the actuator rests directly on an actuator. However, this causes the actuator to tilt directly to the transmission element.
- an unevenness of the flat surfaces of the actuator and the actuator, which lie against one another, leads to a one-sided loading of the actuator and the actuator, whereby the transmission of the deflection is impaired and the uneven area is worn to an increased extent.
- the object of the invention is to provide an improved power transmission between the actuator and the actuator, which compensates for misalignment or unevenness between the actuator and the actuator.
- An important advantage of the invention resides in the fact that the actuator and the actuator are in operative connection with one another via a curved compensation surface, which compensates for a misalignment of the actuator or the actuator.
- Another advantage of the invention is that a compensating element is provided between the actuator and the actuator, which has a positive curvature in the area in which the actuator rests on the compensating element, which is towards the actuator is curved.
- the positive curvature of the compensating element ensures that the predetermined contact point is maintained even when the actuator is offset and / or inclined relative to the predetermined position. The optimal transmission direction is thus maintained even with a misaligned actuator. Increased wear is also avoided.
- Transmission element is arranged.
- the deflection of the actuator is preferably increased by the transmission element. If several transmission elements are used, different overall heights of the transmission elements are advantageously compensated for by the compensating element.
- FIG. 1 shows a part of an injection valve
- FIG. 2 shows an injection valve with a transmission element
- FIG. 3 shows an injection valve with transmission elements of different heights
- FIG. 4 a guide disk with transmission elements
- FIG. 5 an injection valve without transmission elements
- FIG. 6 a compensating element, the curved surface of which is assigned to the actuator
- FIG. 7 a compensating element with two curvature surfaces
- FIG. 8 a compensating element which is designed as a partial sphere
- FIG. 9 an actuator and an actuator with the curved surfaces lying against one another.
- the invention can be used for all devices in which a deflection or a force is transmitted between an actuator and a transmission element or an actuator. The essential features of the invention are explained below with the aid of an injection valve.
- FIG. 1 schematically shows part of an injection valve with a piezoelectric actuator 1, which is guided in a guide ring 9 and is firmly connected to a pressure plate 2, which rests on the top of a compensating element 3.
- the compensating element 3 lies with its underside 20 against two transmission elements 4, 24.
- the transmission elements 4, 24 essentially have a triangular shape that is rounded at the corners.
- the triangular shape is delimited by a peripheral side surface which defines the width of the transmission elements 4, 24.
- the circumferential side surface is rounded in the circumferential direction, in particular in the areas in which the side surface rests on the compensating element 3 or on the actuator 5. Due to the rounded shape, the frictional resistance between the transmission element 4, 24 and the compensation element 3 is reduced and the wear when moving the transmission elements is kept low.
- fewer or more transmission elements can also be arranged.
- Each transmission element 4, 24 rests with a first support point P1 on a support surface 21 of the housing 6 and with a second support point P2 on an actuator 5 which is movably guided in a bore 13 in the housing 6. With a third contact point P3, each transmission element 4, 4 lies on the underside 20 of the compensating element 3.
- the actuator 5 is, for example, directly with an injection needle of the injection valve or with a closing element a servo valve connected.
- the transmission element 4.24 has a curved recess, which ensures that when the transmission element 4.24 is moved, the transmission element 4.24 rests only on the support surface 21 with the first support point P1 and the movement of the transmission element 4.24 is not hindered.
- the piezoelectric actuator 1 is connected to a control unit 15 via control lines 14 and is supported with its end side against an end plate 16 in the guide ring 9.
- a hollow screw 8 sets a function-related distance between the pressure plate 2 and the compensating element 3 via the guide ring 9.
- a spring guide disc 10 is provided, which rests on the support ring 11 and is arranged at the level of the compensating element 3, the compensating element 3 being arranged in the central recess of the spring guide disc 10.
- spring elements 7 are arranged, which surround the compensating element 3 and are introduced into the recess in the spring guide disk 10.
- the spring elements 7 bias the piezoelectric actuator 1 against the end plate 16.
- the spring elements 7 are designed as plate springs which have a central recess in which the compensating element 3 is arranged.
- the compensating element 3 has the shape of a cylinder which has a concave curvature on its upper side 17, which is preferably designed as a partial spherical shape. For the function of the curvature, it is sufficient if at least the area of the upper side 17 has a positive curvature towards the pressure plate 2, against which the pressure plate 2 rests on the compensating element 3.
- the point at which the pressure plate 2 rests on the upper side 17 is referred to as the contact point A, which is arranged in the center axis of symmetry M of the injection valve and in the center in the cross section of the compensating element 3.
- the underside 20 of the compensating element 3 represents a flat surface on which the first and the second transmission element 4, 24 each abut the third support point P3.
- the compensating element 3 is guided in the axial direction of movement of the actuator 3 through the support ring 11 and through a guide disc 12 which is arranged between the support ring 11 and the support surface 21 and at least partially comprises the compensating element 3.
- the mode of operation of the injection valve of FIG. 1 is described in the following:
- the control unit 15 sends a control signal to the piezoelectric actuator 1, which then expands against the spring force of the spring elements 7 and in doing so presses the compensating element 3 against the transmission elements 4.
- the transmission elements 4 each rest on the housing 6 with a first support point P1 and on the actuator 5 with a second support point P2.
- the first and second transmission elements 4, 24 act as levers, which are supported on the first support points P1 and press the actuator 5 downward via the second support points P2.
- the compensating element 3 according to the invention also offers the
- first and a second transmission element 4, 24 which have a different overall height.
- the compensating element 3 tilts out of the horizontal position, as shown in FIG. Because of the curved surface of the upper side 17, even in the case of a tilted compensating element 3, the contact point A, at which the piezoelectric actuator 1 or the pressure plate 2 abut the compensating element 3, is not displaced from the center symmetry axis M.
- the compensating element 3 thus enables automatic distance compensation with differently high transmission elements 4, 24. So that the tilted compensating element 3 is not laterally displaced, it is supported by the support ring 11 and preferably guided by the guide disk 12 in the direction of movement of the actuator 1.
- the first and the second transmission element 4, 24 are fixed in their positions by the guide disk 12.
- the guide disk 12 as shown in FIG. 4, has a guide recess 18.
- the guide recess 18 adjusts the first and the second transmission element 4.24 symmetrically to the center symmetry axis M and defines the first and the second transmission element 4.24 in the plane of the guide disk 12.
- the guide recess 18 has essentially the shape of a rectangle which merges into a circular shape in the middle.
- the circular shape ensures that both the movement of the actuator 5 and the movement of the compensating element 3 are not hindered by the guide disk 12.
- the circular shape serves to accommodate the compensating element 3, which is also guided by the guide disk 3.
- the guide disk 12 preferably has only one rectangular recess in which the transmission element 4 is guided.
- the overall height of the transmission element 4 is greater than the overall height of the guide disk 12, so that the transmission element 4 protrudes above and below the guide disk 12 so that sufficient play for a movement of the compensating element 3 and the actuator 5 is present.
- a central bore can also be made in the guide disk 12, which is adapted to the cross section of the compensating element 3 and at least partially accommodates the compensating element 3 and guides the compensating element 3 in the direction of movement of the actuator 1.
- FIG. 5 shows a further embodiment of the injection valve, in which the compensating element 3 bears directly on the actuator 5 and no transmission elements 4, 24 are provided.
- Figure 6 shows a compensating element 3, which has a curved underside, which rests on the actuator 5.
- the actuator 5 has a flat end surface which rests on the compensating element 3.
- Figure 7 shows a further embodiment of the compensating element 3, which has a curved top and a curved bottom, wherein the curvature of the top is assigned to the actuator 1 and the curvature of the bottom to the actuator 5, and the actuator 1 or the actuator 5 on the curved top or abuts the curved bottom.
- the contact points at which the actuator and the actuator rest on the compensating element 3 are arranged in the center axis of symmetry M.
- the compensating element 3 is guided by a higher support ring 11 in the direction of movement of the actuator 3.
- This two-sided curved compensation element 3 compensates for misalignments of the actuator and the actuator.
- the actuator 1 lies against the compensating element 3 with a flat end face.
- FIG. 8 shows a further special embodiment of the compensating element 3, which in this example is in the form of a partial sphere, preferably in the form of a hemisphere.
- the manufacture of the compensating element 3 is easy to manufacture.
- the essential idea of the invention is to compensate for a misalignment of the actuator and / or the actuator by the arrangement of at least one curved surface between the actuator and the actuator.
- the curved surface can also be located directly at the end of the actuator 1, for example be formed on the pressure plate 2 or at the end of the actuator 5.
- a corresponding embodiment is shown in FIG. 9.
- a separate compensating element 3 also offers the advantage that the curved surfaces on the compensating element 3 can be produced more easily than on the actuator 1, the pressure plate 2 or on the actuator 5.
- a further improvement of the compensation is achieved in that, in the arrangement of FIG. 9, between the curved surface or surfaces of the actuator 1 and / or the actuator 5, a compensation element 3 with one or two curved surfaces corresponding to FIGS. 1, 6, 7 is arranged.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19757659A DE19757659C1 (en) | 1997-12-23 | 1997-12-23 | Fuel injection valve with compensation surface e.g. for motor vehicle IC engine |
DE19757659 | 1997-12-23 | ||
PCT/DE1998/003555 WO1999034113A1 (en) | 1997-12-23 | 1998-12-02 | Injection valve with compensating surface |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0966603A1 true EP0966603A1 (en) | 1999-12-29 |
EP0966603B1 EP0966603B1 (en) | 2003-11-12 |
Family
ID=7853255
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98964377A Expired - Lifetime EP0966603B1 (en) | 1997-12-23 | 1998-12-02 | Injection valve with compensating surface |
Country Status (4)
Country | Link |
---|---|
US (1) | US6186474B1 (en) |
EP (1) | EP0966603B1 (en) |
DE (2) | DE19757659C1 (en) |
WO (1) | WO1999034113A1 (en) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6607178B1 (en) * | 1997-09-29 | 2003-08-19 | Siemens Aktiengesellschaft | Thrust device, fuel injection valve having such a device, and method for manufacturing a thrust transfer element |
DE19849933C2 (en) * | 1998-10-29 | 2000-09-28 | Siemens Ag | Actuating arrangement, in particular for the mechanical control of an injection valve of an internal combustion engine |
DE19857615C1 (en) * | 1998-12-14 | 2000-07-13 | Siemens Ag | Lever translator |
DE19921242C1 (en) * | 1999-05-07 | 2000-10-26 | Siemens Ag | Method of positioning control drive in common rail fuel injector for motor vehicle internal combustion engine |
DE19939477A1 (en) * | 1999-08-20 | 2001-03-22 | Bosch Gmbh Robert | Valve for controlling liquids |
DE10029067B4 (en) * | 2000-06-13 | 2006-03-16 | Siemens Ag | Injection valve with biased closing member |
DE10101796A1 (en) * | 2001-01-17 | 2002-07-18 | Bosch Gmbh Robert | Valve for controlling fluids has a piezo actuator, a mechanical changeover device to switch over the stroke in the piezo actuator, a readjusting element and an operating piston. |
DE10101799A1 (en) * | 2001-01-17 | 2002-07-18 | Bosch Gmbh Robert | Valve for controlling fluids has an actuator, a mechanical changeover device for switching over the stroke in the actuator, a readjusting device and a valve element. |
US6595436B2 (en) * | 2001-05-08 | 2003-07-22 | Cummins Engine Company, Inc. | Proportional needle control injector |
DE10142798C2 (en) * | 2001-08-31 | 2003-07-31 | Bosch Gmbh Robert | Storage for a piezo actuator module in a common rail injector |
DE10148874C2 (en) * | 2001-10-04 | 2003-12-24 | Siemens Ag | Nozzle device, in particular for fuel injection |
DE10149286C2 (en) * | 2001-10-05 | 2003-12-11 | Siemens Ag | Nozzle device, in particular for fuel injection |
DE10307003B3 (en) * | 2003-02-19 | 2004-05-13 | Siemens Ag | IC engine fuel injection valve has actuator controlling displacement of valve needle spring biased into closure position for fuel injection bores |
DE10308613A1 (en) * | 2003-02-27 | 2004-09-16 | Siemens Ag | Valve with a lever, lever and method for producing a lever |
DE10326707B3 (en) * | 2003-06-11 | 2005-01-27 | Westport Germany Gmbh | Valve device and method for injecting gaseous fuel |
DE102010063246B4 (en) * | 2010-12-16 | 2015-12-03 | Continental Automotive Gmbh | Drive device for an injection valve and injection valve |
DE102011090200A1 (en) * | 2011-12-30 | 2013-07-04 | Continental Automotive Gmbh | Lever and injector |
DE102011090196A1 (en) * | 2011-12-30 | 2013-07-04 | Continental Automotive Gmbh | Lever and injector |
DE102012218593A1 (en) | 2012-10-12 | 2014-04-17 | Continental Automotive Gmbh | Valve for a pump |
DE102022115133A1 (en) | 2022-06-15 | 2023-12-21 | Dionex Softron Gmbh | Rotor for rotary shear valve |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2563868A (en) * | 1945-12-21 | 1951-08-14 | Specialties Dev Corp | Valve control head |
US4022166A (en) * | 1975-04-03 | 1977-05-10 | Teledyne Industries, Inc. | Piezoelectric fuel injector valve |
US4071047A (en) * | 1975-09-30 | 1978-01-31 | Micro Pneumatic Logic Inc. | Fluid switch |
IT1119092B (en) * | 1979-06-05 | 1986-03-03 | Fiat Auto Spa | COMMAND OF THE DIFFERENTIATED OPENING OF THE BUTTERFLY FOR MOTOR VEHICLE ENGINES |
US4508142A (en) * | 1979-12-31 | 1985-04-02 | Polaroid Corporation | Zero displacement low-shear valve |
IT220660Z2 (en) * | 1990-10-31 | 1993-10-08 | Elasis Sistema Ricerca Fiat | IMPROVEMENTS IN THE HIGH PRESSURE SHUTTER SYSTEM IN A PILOT VALVE OF AN ELECTROMAGNETIC INJECTOR FOR FUEL INJECTION SYSTEMS OF INTERNAL COMBUSTION ENGINES |
JP3338972B2 (en) * | 1993-11-12 | 2002-10-28 | 清原 まさ子 | Controller |
US5435286A (en) * | 1994-05-02 | 1995-07-25 | Cummins Engine Company, Inc. | Ball link assembly for vehicle engine drive trains |
DE19540155C2 (en) * | 1995-10-27 | 2000-07-13 | Daimler Chrysler Ag | Servo valve for an injection nozzle |
DE19624001A1 (en) * | 1996-06-15 | 1997-12-18 | Bosch Gmbh Robert | Fuel injection device for internal combustion engines |
-
1997
- 1997-12-23 DE DE19757659A patent/DE19757659C1/en not_active Expired - Fee Related
-
1998
- 1998-12-02 WO PCT/DE1998/003555 patent/WO1999034113A1/en active IP Right Grant
- 1998-12-02 DE DE59810163T patent/DE59810163D1/en not_active Expired - Lifetime
- 1998-12-02 EP EP98964377A patent/EP0966603B1/en not_active Expired - Lifetime
-
1999
- 1999-08-23 US US09/379,216 patent/US6186474B1/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9934113A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE59810163D1 (en) | 2003-12-18 |
WO1999034113A1 (en) | 1999-07-08 |
DE19757659C1 (en) | 1999-06-17 |
US6186474B1 (en) | 2001-02-13 |
EP0966603B1 (en) | 2003-11-12 |
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