EP1336045A1 - Injektorgehäuse mit einer aktoreinheit und dazwischenliegender dämpfungsscheibe - Google Patents
Injektorgehäuse mit einer aktoreinheit und dazwischenliegender dämpfungsscheibeInfo
- Publication number
- EP1336045A1 EP1336045A1 EP01996684A EP01996684A EP1336045A1 EP 1336045 A1 EP1336045 A1 EP 1336045A1 EP 01996684 A EP01996684 A EP 01996684A EP 01996684 A EP01996684 A EP 01996684A EP 1336045 A1 EP1336045 A1 EP 1336045A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- guide pin
- actuator unit
- receiving body
- section
- recess
- 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
- 238000013016 damping Methods 0.000 title claims abstract description 27
- 238000007789 sealing Methods 0.000 claims description 14
- 241001272720 Medialuna californiensis Species 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 9
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 2
- 239000011152 fibreglass Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002984 plastic foam Substances 0.000 description 2
- ANVAOWXLWRTKGA-NTXLUARGSA-N (6'R)-beta,epsilon-carotene Chemical compound CC=1CCCC(C)(C)C=1\C=C\C(\C)=C\C=C\C(\C)=C\C=C\C=C(/C)\C=C\C=C(/C)\C=C\[C@H]1C(C)=CCCC1(C)C ANVAOWXLWRTKGA-NTXLUARGSA-N 0.000 description 1
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 239000006262 metallic foam Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 238000005245 sintering Methods 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
- 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
- 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
- F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
- F02M2200/306—Fuel-injection apparatus having mechanical parts, the movement of which is damped using mechanical means
Definitions
- injector housing and actuator unit is consequently suitable for use with a piezoelectric actuator unit which has only small travel ranges.
- actuator units based on another - for example magnetostrictive - effect can also be used as the actuator unit.
- the guide pin has a shoulder which is arranged in the recess in the receiving body and which has a first surface which faces the head plate. This shoulder therefore forms a lateral projection of the guide bolt.
- the receiving body has a shoulder in the recess, which has a second surface that faces the first surface. The first surface and the second surface are therefore opposite.
- the means for exerting a force on the guide pin is clamped between the first and the second surface and presses the first surface and the second surface apart. As a result, the guide pin is pressed into the recess, as a result of which the actuator unit is pressed against the first damping disk.
- the shoulder of the guide pin and the shoulder of the receiving body are preferably designed to run radially around the guide pin.
- the shoulder of the guide pin is designed as a disc.
- the means for exerting a force on the guide pin can be designed as a spring.
- the spring should be made very hard to avoid stroke losses.
- the spring can be designed, for example, as a spiral spring, plate spring or tubular spring.
- the receiving body has an opening through which the guide pin is laterally accessible from the outside.
- the means for exerting a force on the guide pin preferably has a stack of half-moon disks arranged between the first surface and the second surface.
- the assembly can be carried out by first inserting the guide pin into the recess of the receiving body and then placing the half-moon disks around the guide pin from the side.
- the opening of the receiving body can be closed again after the crescent moon discs have been inserted, for example by inserting a plastic insert as a cover or by potting the opening with plastic foam.
- the first damping disc and the second damping disc consist, for example, of ceramic, fiber-reinforced plastic materials or metal foams, which are produced from a paste of metal particles and binder by a sintering process.
- the materials for the first damping disc and the second damping disc have the smallest possible elasticity and at the same time low sound transmission properties in order to avoid stroke losses of the actuator unit.
- this means can also be designed differently.
- the guide pin has a lower part and an upper part adjoining it, the lower part having a smaller cross section and a smaller distance from the head plate than the upper part.
- the recess of the receiving body has a lower section, the cross section of which corresponds to the cross section of the lower part of the guide pin, and an adjoining upper section, the cross section of which corresponds to the cross section of the upper part of the guide pin.
- the upper part of the guide pin is arranged in the upper section of the receiving body, while the lower part of the guide pin is arranged partly in the lower section and partly in the upper section of the recess.
- the means for exerting a force on the guide pin has a pressure space arranged in the receiving body, which opens into a region of the upper section of the recess in which the lower part of the guide pin is arranged.
- the pressure chamber is filled with a liquid.
- the means for exerting a force on the guide pin is such that it pressurizes the liquid. Due to the pressure in the pressure chamber, a force is exerted on the upper part of the guide bolt from below, by means of which the actuator unit is pressed against the first damping disk.
- the lower part of the guide pin has a circumferential groove in the region of the lower section of the recess, in which a first sealing ring is arranged. Also for sealing the pressure chamber, it is advantageous if the upper part of the guide pin has a circumferential groove in which a second sealing ring is arranged. Exemplary embodiments of the invention are explained in more detail below with reference to the figures.
- FIG. 1 shows a cross section through part of an injector housing and part of a first actuator unit with an actuator element, a tubular spring of a head plate, a guide pin, a first damping disk, a receiving body, a recess, a second damping disk, a spring, a locking washer, a washer and a screw plug.
- FIG. 2a shows a cross section through part of a second injector housing and part of a second
- Actuator unit with an actuator element, a Bourdon tube, a head plate, a guide pin, a first damping disc, a receiving body, a recess, a second damping disc, an opening, a locking washer and a stack of half-moon discs.
- FIG. 2b shows a top view of a crescent moon disc from FIG. 2a.
- FIG. 3 shows a cross section through part of a third injector housing and part of a third actuator unit with an actuator element, a tube spring, a head plate, a first damping disk, a receiving body, a lower part of a
- Locking screw and a locking washer Locking screw and a locking washer.
- an arrangement comprising a first injector housing and a first actuator unit is provided.
- the first actuator unit has a piezoelectric actuator element A, which is firmly connected to a top plate K of the actuator unit (see FIG. 1).
- a tubular spring R which prestresses the actuator element A, is arranged between the top plate K and a base plate (not shown) of the actuator unit.
- a guide pin F is fixedly connected to the head plate K and protrudes into a recess U of a receiving body AK of the injector housing (see FIG. 1).
- a first damping disc D1 made of carbon or glass fiber reinforced plastic is arranged between the head plate K and the receiving body AK.
- a shoulder ABK of the receiving body AK runs radially around the guide pin F.
- the guide pin F has a disk S, which forms a shoulder of the guide pin F.
- the washer S is held in place by a locking washer SI arranged in a groove of the guide bolt F and by a step of the guide bolt F (see FIG. 1).
- the disk S has a first surface F1 which faces the top plate K.
- the shoulder ABK of the receiving body AK has a second surface F2 which faces the first surface F1 (see FIG. 1).
- a second damping disk D2 made of carbon or glass fiber reinforced plastic is arranged on the second surface F2.
- a spiral spring FE is arranged between the second damping disk D2 and the disk S and presses the first F1 and the second surface F2 apart.
- the recess ü of the receiving body AK is delimited from above by a screw plug V.
- an arrangement of a second 'injector and a second actuator envisaged.
- the second actuator unit has an actuator element A ', a tubular spring R', a head plate K ', a guide pin F'.
- a first damping disk D1 ' is arranged between a receiving body AK' of the second injector housing and the head plate K '.
- the guide pin F ' has a crescent-shaped disk S', which forms a shoulder with a first surface Fl '.
- the receiving body AK ' has a shoulder ABK' which forms a second surface F2 '.
- a lateral opening 0 is provided in the receiving body AK 'through which the guide pin F' is accessible from the side (see FIG. 2a).
- a second damping disk D2 ' is arranged on the second surface F2'.
- a stack of half-moon disks H is arranged between the second damping disk D2 'and the disk S'.
- the half-moon disks H each have the shape of an unclosed ring. The opening of this ring is so large that the half-moon disc H can be placed around the guide pin F 'from the side opening 0 (see FIG. 2b).
- the crescent moon discs H are rotated 90 ° around the guide pin F '.
- an arrangement comprising a third injector housing is provided in a third actuator unit.
- the third actuator unit has an actuator element A ′′, a tubular spring R ′′, a top plate K ′′ and a guide pin F ′′.
- the guide pin F '' has a lower part UT and an adjacent upper part OT.
- the lower part ÜT has a smaller cross section than the upper part OT (see Figure 3).
- a first damping disk D1 '' is arranged between a receiving body AK '' of the third injector housing and the head plate K ''.
- the receiving body AK '' has a recess U ''.
- the recess U ′′ has an upper section OA and a lower section UA.
- the upper part OT of the guide pin F '' is arranged in the upper section OA of the recess U ''.
- the lower part UT of the guide bolt F ′′ is arranged partly in the lower section UA and partly in the upper section OA of the recess U ′′ (see FIG. 3).
- the receiving body AK '' has a pressure chamber D which opens into the upper section OA of the recess U '' in the region of the lower part UT of the guide bolt F '' (see FIG. 3).
- the pressure chamber D is delimited from above by the upper part OT of the guide bolt F ′′ and by a sealing element I and an adjoining stud SS.
- Stud screw SS is subjected to pressure in the pressure chamber D, so that the liquid arranged in the pressure chamber D exerts a force on a surface of the upper part OT of the guide bolt F '' facing the head plate K '', and thus the third actuator unit against the first damping disk D1 '' is pressed.
- the sealing element I prevents leakage of the liquid in the pressure chamber D past the stud SS.
- a groove is provided in the lower part OT of the guide bolt F ′′, in which a first sealing washer II is arranged.
- a groove is provided in the upper part TDC of the guide pin F ′′, in which a second sealing washer 12 is arranged.
- the groove is formed by a piston KO and a washer S '', the washer S '' being held in place by a locking washer SI ''.
- the recess U '' of the receiving body AK '' is delimited from above by a screw plug V '.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10057495 | 2000-11-20 | ||
| DE2000157495 DE10057495B4 (de) | 2000-11-20 | 2000-11-20 | Injektorgehäuse mit einer Aktoreinheit |
| PCT/DE2001/004286 WO2002040858A1 (de) | 2000-11-20 | 2001-11-15 | Injektorgehäuse mit einer aktoreinheit und dazwischenliegender dämpfungsscheibe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1336045A1 true EP1336045A1 (de) | 2003-08-20 |
| EP1336045B1 EP1336045B1 (de) | 2005-09-21 |
Family
ID=7663953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01996684A Expired - Lifetime EP1336045B1 (de) | 2000-11-20 | 2001-11-15 | Injektorgehäuse mit einer aktoreinheit und dazwischenliegender dämpfungsscheibe |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1336045B1 (de) |
| DE (2) | DE10057495B4 (de) |
| WO (1) | WO2002040858A1 (de) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10132756B4 (de) * | 2001-07-10 | 2005-01-27 | L'orange Gmbh | Stellglied für Schaltelemente von Kraftstoff-Einspritzvorrichtungen |
| DE102004044153A1 (de) | 2004-09-13 | 2006-03-30 | Siemens Ag | Hubvorrichtung und Einspritzventil |
| DE102004046095B4 (de) * | 2004-09-23 | 2018-02-15 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
| FR2875863B1 (fr) * | 2004-09-30 | 2009-05-01 | Peugeot Citroen Automobiles Sa | Dispositif d'injection a rayonnement accoustique reduit |
| DE102004050224A1 (de) * | 2004-10-15 | 2006-04-20 | Robert Bosch Gmbh | Aktormodul |
| DE102005029976A1 (de) * | 2005-06-28 | 2007-01-11 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
| FR2892156B1 (fr) * | 2005-10-19 | 2008-01-18 | Peugeot Citroen Automobiles Sa | Dispositif d'amortissement des vibrations pour un injecteur de carburant |
| DE102006009094A1 (de) * | 2006-02-28 | 2007-08-30 | Bayerische Motoren Werke Ag | Dämpfungseinrichtung und Dämpfungselement |
| DE102007002682A1 (de) * | 2007-01-18 | 2008-07-24 | Bayerische Motoren Werke Aktiengesellschaft | Dämpfungseinrichtung und Dämpfungselement |
| EP2055927B1 (de) | 2007-10-31 | 2010-05-26 | Continental Automotive GmbH | Aktuatoranordnung und Einspritzventil |
| EP2075857B1 (de) * | 2007-12-28 | 2011-03-23 | Continental Automotive GmbH | Aktuatoranordnung und Einspritzventil |
| DE102009057406A1 (de) * | 2009-12-08 | 2011-06-09 | Continental Automotive Gmbh | Einspritzventil und Anordnung aus einem Einspritzventil und einem Zylinderkopf einer Brennkraftmaschine |
| DE102010042622A1 (de) * | 2010-10-19 | 2012-04-19 | Robert Bosch Gmbh | Kraftstoffinjektor, inbesondere Common-Rail-Injektor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3533085A1 (de) * | 1985-09-17 | 1987-03-26 | Bosch Gmbh Robert | Zumessventil zur dosierung von fluessigkeiten oder gasen |
| US4995587A (en) * | 1989-11-03 | 1991-02-26 | Martin Marietta Corporation | Motion amplifier employing a dual piston arrangement |
| DE19727992C2 (de) * | 1997-07-01 | 1999-05-20 | Siemens Ag | Ausgleichselement zur Kompensation temperaturbedingter Längenänderungen von elektromechanischen Stellsystemen |
| DE19844837B4 (de) * | 1998-09-30 | 2009-05-07 | Robert Bosch Gmbh | Kraftstoffeinspritzventil für Brennkraftmaschinen |
| DE19947779A1 (de) * | 1999-10-02 | 2001-04-12 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
-
2000
- 2000-11-20 DE DE2000157495 patent/DE10057495B4/de not_active Expired - Fee Related
-
2001
- 2001-11-15 WO PCT/DE2001/004286 patent/WO2002040858A1/de not_active Ceased
- 2001-11-15 EP EP01996684A patent/EP1336045B1/de not_active Expired - Lifetime
- 2001-11-15 DE DE50107520T patent/DE50107520D1/de not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0240858A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1336045B1 (de) | 2005-09-21 |
| DE10057495B4 (de) | 2005-08-04 |
| WO2002040858A1 (de) | 2002-05-23 |
| DE10057495A1 (de) | 2002-05-29 |
| DE50107520D1 (de) | 2006-02-02 |
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