EP2798195A1 - Lever device and a fuel injection valve - Google Patents
Lever device and a fuel injection valveInfo
- Publication number
- EP2798195A1 EP2798195A1 EP12813825.2A EP12813825A EP2798195A1 EP 2798195 A1 EP2798195 A1 EP 2798195A1 EP 12813825 A EP12813825 A EP 12813825A EP 2798195 A1 EP2798195 A1 EP 2798195A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lever
- housing
- coupled
- injection valve
- planar wall
- 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 abstract description 36
- 239000007924 injection Substances 0.000 title claims abstract description 36
- 239000000446 fuel Substances 0.000 title abstract description 4
- 230000008878 coupling Effects 0.000 claims abstract description 19
- 238000010168 coupling process Methods 0.000 claims abstract description 19
- 238000005859 coupling reaction Methods 0.000 claims abstract description 19
- 230000009471 action Effects 0.000 claims description 23
- 239000012530 fluid Substances 0.000 claims description 6
- 230000008901 benefit Effects 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process 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
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
-
- 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
- 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
- F02M2200/702—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger mechanical with actuator and actuated element moving in different directions, e.g. in opposite directions
Definitions
- the invention relates to a lever device for an injection valve having a housing, at least one lever element, a drive element and an output element.
- the invention further relates to an injection valve for an internal combustion engine of a motor vehicle, which comprises the lever device and a valve needle which is coupled to the output element or which forms the output element.
- Injection valves for an internal combustion engine of a motor vehicle may have actuators which are designed in particular as piezoactuators.
- Such actuators have a piezoceramic material.
- Such actuators may change their longitudinal extent depending on an electric field acting in the piezoceramic material.
- a lever device can be provided which translates the stroke of the actuator.
- Piezoelectric actuators which are used as actuators, in particular in injection valves for internal combustion engines in motor vehicles, are arranged in a housing so that a lifting movement in the axial direction can be performed.
- the object of the invention is to provide a lever device for an injection valve, which is permanently reliable.
- the object is also to provide an injection valve, which has a long life.
- the invention is characterized by a lever device for an injection valve, with a housing having a housing recess, at least one lever element which is arranged in the housing recess, a drive element which is arranged in the housing recess and with the at least one Lever element is coupled to act on the at least one lever element in the direction of a
- the output element is coupled to the at least one lever element such that the
- Output element by means of the at least one lever element in the direction of the force action axis is movable.
- the at least one lever element has a coupling section which is designed or arranged such that the at least one lever element is coupled to the housing or the driven element in a rotationally fixed manner with respect to the force action axis.
- the at least one lever element is rotationally fixed with respect to the housing or the driven element with respect to the force axis of action.
- the coupling portion of the lever member on a flat wall portion, and the output element has a flat wall portion.
- the plane Wall portion of the lever member cooperates with the planar wall portion of the output element such that the at least one lever element is rotatably coupled to the output element with respect to the force action axis.
- planar wall section of the lever element and the planar wall section of the output element are in particular planar in a plane which is approximately plane-parallel to the force action axis.
- Output element can be reliably prevented.
- the coupling section of the lever element has a planar wall section
- the housing recess has a planar wall section.
- the planar wall section of the lever element interacts with the planar wall section of the housing recess such that the at least one lever element is coupled to the housing in a rotationally fixed manner with respect to the force action axis.
- planar wall section of the lever element and the planar wall section of the housing recess are in particular planar in a plane which is approximately plane-parallel to the force action axis.
- lever element and the housing can be made in a very simple manner. Furthermore, can a rotational movement of the lever member relative to the housing to be reliably prevented.
- the coupling portion of the lever element has a recess
- the housing has a pin.
- the pin is arranged in the recess of the coupling portion of the lever member such that the at least one lever member is rotatably coupled to the housing with respect to the force action axis.
- the invention is characterized by an injection valve, which comprises the lever device and a valve needle.
- the valve needle is coupled to the output element or forms the output element.
- the drive element and the valve needle are coupled to one another via the lever device in such a way that, depending on a control signal, the valve needle prevents fluid flow through the injection valve in a closed position and otherwise releases it. Due to the coupling of the lever member relative to the housing or the valve needle, such a valve can be operated permanently reliable.
- FIG. 1 shows a schematic representation of an injection valve
- FIG. 2 shows a cross section through a lever device in a first embodiment
- 3 shows a cross section through a lever device in a further embodiment
- Figure 4 shows a cross section through a lever device in a further embodiment
- Figure 5 shows a further cross section through the lever device of
- FIG. 1 shows a valve, in particular an injection valve 10 for an internal combustion engine in a motor vehicle.
- the injection valve 10 has a housing 12.
- the housing 12 has an intermediate disc 12a, which is arranged between two tubular sections 12b of the housing 12.
- the washer 12a and the two tubular portions 12b are fixedly coupled together and together form the housing 12.
- a housing recess 14 with a fluid inlet 16 and a fluid outlet 18 is formed in the housing 12.
- fuel can be supplied to the injection valve 10 in the region of the fluid inlet 16.
- a valve needle 20 is arranged axially movable, which closes an injection nozzle 22 in a closed position and otherwise allows fuel flow through the injection nozzle 22.
- the injection valve 10 includes a piezoelectric actuator 24.
- the piezoelectric actuator 24 may also be be provided other actuator, such as a magnetostrictive actuator or an electromagnetic actuator.
- the injector 10 further includes a drive element 26 coupled to the actuator 24.
- the drive element 26 preferably includes a pin or rod that transmits the stroke and a drive force of the actuator 24.
- the actuator 24 and the drive element 26 are coupled together in the axial direction.
- a stroke of the drive element 26 is dependent on an axial extent of the piezoelectric actuator 24, which depends on a
- Control signal is that can be supplied to the piezoelectric actuator 24.
- the drive element 26 further comprises a preferably bell-shaped component 27.
- a lever device 28 is further arranged.
- the lever device 28 comprises the drive element 26 and a lever element 30 or a plurality of lever elements 30.
- the lever device 28 has two lever elements 30.
- the lever elements 30 are coupled to the drive element 26.
- the lever elements 30 are coupled to an output element 32.
- the output element 32 is arranged in the housing recess 14.
- the output element 32 is preferably coupled to the valve needle 20.
- the valve needle 20 may also form the output element 32.
- the drive member 26, the lever member 30 and the output member 32 cooperate such that the stroke of the drive member 26 is transmitted to the valve needle 20 and that the valve needle 20 is thus moved to its closed position or to an open position.
- a force action axis A of a drive force of the drive member 26 passes through the drive member 26 and as a force action axis of a driven force further through the Output element 32.
- the force action axis is offset by the drive element 26 to the force action axis by the output element 32.
- Figure 2 shows a first embodiment of the lever device 28 in a cross section.
- the lever elements 30 each have a coupling portion 34.
- Figure 2 has the
- Output element 32 has two planar wall sections 36.
- the planar wall sections 36 are opposite to each other with respect to the force action axis A of the output element 32.
- the coupling sections 34 of the lever elements 30 each have a planar wall section 38.
- the planar wall sections 38 of the lever elements 30 are assigned to the planar wall sections 36 of the output element 32.
- one of the planar wall sections 38 of the lever element 30 is opposite to a planar wall section 36 of the output element 32.
- the planar wall portions 36 of the output member 32 cooperate with the planar wall portions 38 of the lever member 30, and thus allow the lever members 30 with the
- Output element 32 rotatably with respect to the force axis A are coupled. It can thus be achieved that the lever elements 30 can no longer rotate with respect to the valve needle 20. Thus, the conditions in the injection of the injection valve 10 can be kept constant over many injection events.
- the coupling sections 34 of the lever elements 30 have planar wall sections 38.
- the housing recess 14 of the housing 12 has two planar wall sections 40 facing one another with respect to the force action axis A.
- one of the planar wall sections 38 of one of the lever elements 30 acts with one of plan wall portions 40 of the housing recess 14 together. It can thereby be achieved that the lever element 30 is coupled to the housing 12 in a rotationally fixed manner with respect to the force action axis A.
- the rotationally fixed coupling of the lever members 30 to the housing 12 it is possible that the contact conditions between the lever members 30 and the housing 12 can be kept constant over a long period of time.
- the injection behavior of the injection valve 10 can be kept constant over a long period of time.
- bores are arranged in the intermediate disk 12a of the housing 12.
- the holes are formed in particular as blind holes.
- pins 42 are arranged in the holes.
- the coupling sections 34 of the lever elements 30 each have a recess 44.
- the pins 42 engage in the recesses 44 of the coupling sections 34 of the lever elements 30. It can thus be achieved that the lever elements 30 are rotationally fixedly coupled to the intermediate disk 12a of the housing 12 with respect to the force action axis A.
- lever elements 30 Due to the non-rotatable coupling between the lever members 30 and the housing 12 can be achieved that the lever elements 30 also a plurality of injection processes a fixed
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011090196A DE102011090196A1 (en) | 2011-12-30 | 2011-12-30 | Lever and injector |
PCT/EP2012/076183 WO2013098161A1 (en) | 2011-12-30 | 2012-12-19 | Lever device and a fuel injection valve |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2798195A1 true EP2798195A1 (en) | 2014-11-05 |
EP2798195B1 EP2798195B1 (en) | 2017-01-11 |
Family
ID=47557068
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12813825.2A Active EP2798195B1 (en) | 2011-12-30 | 2012-12-19 | Lever device and a fuel injection valve |
Country Status (4)
Country | Link |
---|---|
US (1) | US9500169B2 (en) |
EP (1) | EP2798195B1 (en) |
DE (1) | DE102011090196A1 (en) |
WO (1) | WO2013098161A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011090196A1 (en) | 2011-12-30 | 2013-07-04 | Continental Automotive Gmbh | Lever and injector |
DE102011090200A1 (en) * | 2011-12-30 | 2013-07-04 | Continental Automotive Gmbh | Lever and injector |
FR3037923B1 (en) * | 2015-06-23 | 2018-05-04 | Airbus Helicopters | METHOD FOR CONTROLLING A TRIMOTIVE MOTOR INSTALLATION FOR A ROTARY WING AIRCRAFT |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1470525A (en) | 1973-08-29 | 1977-04-14 | Girling Ltd | Abutment assemblies for internal shoe drum brakes |
DE3311690C2 (en) | 1983-03-30 | 1985-05-30 | Heilmeier & Weinlein Fabrik für Oel-Hydraulik GmbH & Co KG, 8000 München | Electromagnetically operated valve |
US5121730A (en) | 1991-10-11 | 1992-06-16 | Caterpillar Inc. | Methods of conditioning fluid in an electronically-controlled unit injector for starting |
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 |
DE19757659C1 (en) | 1997-12-23 | 1999-06-17 | Siemens Ag | Fuel injection valve with compensation surface e.g. for motor vehicle IC 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 |
JP2003507679A (en) | 1999-08-20 | 2003-02-25 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Valve for controlling liquid |
DE10002720A1 (en) * | 1999-08-20 | 2001-03-29 | Bosch Gmbh Robert | Valve for controlling liquids |
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. |
WO2002086982A1 (en) | 2001-04-20 | 2002-10-31 | Siemens Aktiengesellschaft | Device for transmitting the deflection of an actuator and method for producing the same |
US6595436B2 (en) | 2001-05-08 | 2003-07-22 | Cummins Engine Company, Inc. | Proportional needle control injector |
DE10304240A1 (en) | 2003-02-03 | 2004-10-28 | Volkswagen Mechatronic Gmbh & Co. Kg | Device for transmitting a deflection of an actuator |
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 |
DE102005020366A1 (en) * | 2005-05-02 | 2006-11-09 | Robert Bosch Gmbh | Injector for motor vehicle internal combustion engine fuel system has nozzle with axially slidable piston connected to needle via connecting volume |
DE102005024707A1 (en) * | 2005-05-30 | 2006-12-07 | Robert Bosch Gmbh | fuel Injector |
DE102006017034B4 (en) | 2006-04-11 | 2008-01-24 | Siemens Ag | Piezo actuator, method for producing a piezo actuator and injection system with such |
DE102006031567A1 (en) | 2006-07-07 | 2008-01-10 | Siemens Ag | Injection system and method for manufacturing an injection system |
DE102009018289B3 (en) | 2009-04-21 | 2010-06-17 | Continental Automotive Gmbh | Method and device for operating an injection valve |
DE102010044285B4 (en) | 2010-09-03 | 2014-02-27 | Continental Automotive Gmbh | Method and device for adjusting an idle stroke of an actuator of an injector and injector assembly |
DE102011075732B4 (en) | 2011-05-12 | 2021-02-11 | Vitesco Technologies GmbH | Control method for an injection valve and injection system |
US8844842B2 (en) | 2011-08-12 | 2014-09-30 | Caterpillar Inc. | Three-way needle control valve and dual fuel injection system using same |
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 |
-
2011
- 2011-12-30 DE DE102011090196A patent/DE102011090196A1/en not_active Ceased
-
2012
- 2012-12-19 EP EP12813825.2A patent/EP2798195B1/en active Active
- 2012-12-19 US US14/369,812 patent/US9500169B2/en active Active
- 2012-12-19 WO PCT/EP2012/076183 patent/WO2013098161A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2013098161A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20150028135A1 (en) | 2015-01-29 |
WO2013098161A1 (en) | 2013-07-04 |
US9500169B2 (en) | 2016-11-22 |
EP2798195B1 (en) | 2017-01-11 |
DE102011090196A1 (en) | 2013-07-04 |
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Inventor name: KUCHLER, ROBERT Inventor name: WECHLER, WOLFGANG Inventor name: WICKE, MATTHIAS Inventor name: FREUDENBERG, HELLMUT Inventor name: HANNICH, MANUEL Inventor name: KOHN, STEFAN Inventor name: LEHMANN, STEFAN Inventor name: FEIGL, ROLAND |
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