EP1812692A1 - Vorrichtung zur regelung des hubverlaufes eines gaswechselventils einer brennkraftmaschine - Google Patents
Vorrichtung zur regelung des hubverlaufes eines gaswechselventils einer brennkraftmaschineInfo
- Publication number
- EP1812692A1 EP1812692A1 EP05801994A EP05801994A EP1812692A1 EP 1812692 A1 EP1812692 A1 EP 1812692A1 EP 05801994 A EP05801994 A EP 05801994A EP 05801994 A EP05801994 A EP 05801994A EP 1812692 A1 EP1812692 A1 EP 1812692A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas exchange
- exchange valve
- drive
- energy storage
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/08—Shape of cams
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
- F01L9/22—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by rotary motors
Definitions
- the present invention relates to an apparatus and a method for controlling the Hubverlaufes a gas exchange valve of an internal combustion engine according to the preamble of the independent claims.
- the camshaft is mechanically driven via a timing chain or timing belt from the crankshaft.
- a so-called electromagnetic valve train In the case of a fully variable valve train, an "actuator unit" is assigned to each valve or "valve group" of a cylinder.
- actuator units In a basic type (so-called stroke actuators), a valve or a valve group is associated with an opening and a closing magnet. By energizing the magnets, the valves can be moved axially, ie opened
- a control shaft is provided with a cam, wherein the control shaft is pivotable by an electric motor back and forth.
- valve spring and additional spring are such that during periodic operation of the rotary actuator device according to the position of the gas exchange valve, the kinetic energy is stored either in the valve spring or in the additional spring.
- the object of the invention is to provide a device for controlling the Hubverlaufes a gas exchange valve, which ensures an improvement in the electrical energy consumption of an actuator.
- the inventive device for controlling the Hubverlaufes a gas exchange valve comprises a control device (so-called setpoint controller), which controls a drive device (eg the electric motor of a rotary actuator or the electromagnets of an electromagnetic Hubaktuators or the drive means of a Schwenkaktuators) according to a stored desired trajectory, wherein the desired path is such that the ideal swing-out behavior of the energy storage drive element energy storage system (spring-mass-spring system) of the actuator device (in addition to be driven valve unit with gas exchange valve and closing spring) is represented by them.
- a control device eg the electric motor of a rotary actuator or the electromagnets of an electromagnetic Hubaktuators or the drive means of a Schwenkaktuators
- this device is to be used in a rotary actuator device according to DE 101 40 461 A1 and to reduce the energy requirement of the electric motor used here, by controlling the rotational course of the rotor of the drive motor according to the determined ideal nominal trajectory of the oscillation system of the rotary actuator device. Due to this regulation then sets in Control behavior in which the electric motor only out of the ideal (calculated) vibration system deviating environmental influences such as friction and gas backpressure by feeding additional drive energy.
- an ideal swing-out behavior in the sense of the invention is characterized in that a vibration behavior free of friction losses and environmental influences such as gas and gas back pressures is present.
- an ideal vibration behavior corresponds to the calculated vibration curve of the system free of any kind of losses.
- a spring-mass-spring system (according to DE 101 40 461 A1) with a valve return spring or opening spring (spring 1), one of the valve return spring counteracting opening spring (spring 2) and the in this system between the springs moving mass (for example: rocker arm, drive cam together with the drive shaft and rotor of the driving electric motor, mass fractions of the opening acting on the drive cam opening spring and gas exchange valve in addition to mass fractions of the moving closing spring).
- the device comprises a Drehaktuatorvoriques according to the unpublished DE 103 58 936.
- DE 103 58 936 in particular with respect to the construction of a rotary actuator (but in particular with regard to the arrangement and design of the opening spring as a torsion spring) with her entire content included in the disclosure of this application.
- the rotary actuator is formed with a driven by an electric motor actuator in the form of a so-called double cam according to DE 102 52 991 A1.
- the content DE 102 52 991 A1 is included in the disclosure content of this application.
- a plurality of so-called ideal set paths are deposited, each set path describing a different valve lift.
- Figure 1 the schematic mechanical structure of a
- FIG. 2 a time diagram with nominal paths of the rotor angle of
- Figure 3 is a lift diagram for an intake and exhaust valve of a fully variable valve train which is controlled by means of a control device with ideal nominal path according to the invention.
- Figure 1 shows the schematic representation of a rotary actuator for driving a gas exchange valve 2 of an internal combustion engine, not shown.
- the essential components of this device are, in particular designed as a servomotor electric motor 4 (drive means), a driven by this, preferably two cams 6a, 6b different strokes camshaft 6 (actuator), one with the camshaft 6 on the one hand and with the gas exchange valve 2 on the other operatively connected rocker arm 8 (transmission element) for transmitting movement of the predetermined by the cam 6a, 6b lifting height to the gas exchange valve 2 and one, the gas exchange valve 2 in the closing direction with a spring force acting and designed as a closing spring first energy storage means 10 and, via the camshaft 6 and the drag lever 8, the gas exchange valve 2 acted upon by an opening force and designed as an opening spring second energy storage means 12.
- a servomotor electric motor 4 drive means
- actuator driven by this, preferably two cams 6a, 6b different strokes camshaft 6 (actuator)
- actuator cams 6a, 6b different strokes camshaft 6
- the gas exchange valve 2 on the other operatively connected rocker
- the electric motor 4 In order to ensure a low-energy operation of the electric motor 4, which drives the existing gas exchange valve 2 via the camshaft 6, in addition to the optimal design of the counteracting springs (closing spring 10, opening spring 12) and the ideal positioning of rotation and articulation points in the geometry the device itself, the electric motor 4 via a control device 20 according to a desired path SB1, SB2, SB3, which maps the ideal swing-out behavior of the spring-mass-spring system regulated. In particular, this regulation is effected by controlling the rotor profile of the electric motor 4 which drives the at least one actuating element 6, 6a, 6b.
- the ideal path profile of the rotor which resonates as part of the vibration system, becomes analogous to the ideal vibration curve of the overall system to monitor the actual position of the rotor, an unillustrated displacement sensor is present, which transmits a sensor signal S to the control device 20 or another control device.
- the electric motor 4 is controlled by the control device 20 such that the at least one gas exchange valve 2 from a first Ventilendlage E1, which corresponds for example to the closed valve position, in a second Ventilendlage E2, E2 ', for example, a partial (E2 1 : Operahub) or maximum opened (E2: full stroke) valve position corresponds, is transferred and vice versa.
- the system is ideally designed so that the actuator 6, 6a, 6b in the absence of environmental influences (in particular friction and gas back pressure) the way between two end positions R1 - R2 or R1 '- R2' without feeding additional energy, ie without active drive through the Drive device 4, travels and thus engages supportive only in the environmental conditions occurring in practice.
- the system according to the invention is preferably designed such that in the maximum end positions R1, R2 of the rotor (oscillation end positions at maximum oscillation stroke) each are in a torque-neutral position, in which the forces occurring are in an equilibrium of forces and in which the rotor without application of a additional holding force is held.
- the rotor thus oscillates from one end position E1, E1 'to the other end position E2, E2' alone due to the forces stored in the energy storage means 10, 12 without feeding an additional energy, such as by the electric motor 4.
- the ideal decay behavior would be thus that of a perpetuum mobile (infinite constant vibration).
- FIG. 2 shows a time diagram with nominal paths of the rotor angle of the drive motor of a rotary actuator over time, by means of which a control of the stroke of gas exchange valves according to the invention takes place. Due to the nominal paths, the ideal decay behavior (stroke progression) of a rotary actuator device according to FIG. 1 is depicted. Shown are three different nominal paths SB1, SB2, and SB3, wherein the first nominal path SB1 the maximum stroke (rotor oscillates between R1 and R2 back and forth, valve position between E1 and E2 adjusts) of the gas exchange valve represents Tö1 at a given control time with a first valve opening time.
- the nominal paths SB2 and SB3 each describe partial strokes (rotor oscillates between R1 'and R2' back and forth, valve position between E1 and E2 'adjusts) with shortened valve opening times Tö2 and Tö3.
- VH_max represents the maximum valve lift
- VH_teil a possible partial lift that has been set, for example, on the basis of one of the setpoint paths SB2 or SB3.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004054773A DE102004054773B4 (de) | 2004-11-12 | 2004-11-12 | Vorrichtung zur Regelung des Hubverlaufes eines Gaswechselventils einer Brennkraftmaschine |
| PCT/EP2005/011220 WO2006050789A1 (de) | 2004-11-12 | 2005-10-19 | Vorrichtung zur regelung des hubverlaufes eines gaswechselventils einer brennkraftmaschine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1812692A1 true EP1812692A1 (de) | 2007-08-01 |
| EP1812692B1 EP1812692B1 (de) | 2011-03-23 |
Family
ID=35743448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05801994A Expired - Lifetime EP1812692B1 (de) | 2004-11-12 | 2005-10-19 | Vorrichtung zur regelung des hubverlaufes eines gaswechselventils einer brennkraftmaschine |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7739986B2 (de) |
| EP (1) | EP1812692B1 (de) |
| AT (1) | ATE503085T1 (de) |
| DE (2) | DE102004054773B4 (de) |
| WO (1) | WO2006050789A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2563064B (en) * | 2017-06-02 | 2022-05-18 | Camcon Auto Ltd | Valve actuators |
| CN113348296B (zh) * | 2018-12-19 | 2023-08-01 | 捷豹路虎有限公司 | 发动机气门致动 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5765513A (en) * | 1996-11-12 | 1998-06-16 | Ford Global Technologies, Inc. | Electromechanically actuated valve |
| DE19947758C2 (de) * | 1999-10-02 | 2003-01-23 | Daimler Chrysler Ag | Vorrichtung zum Betätigen eines Gaswechselventils mit einem elektromagnetischen Aktuator |
| DE10034877C1 (de) * | 2000-07-18 | 2001-10-11 | Siemens Ag | Verfahren zur Anpassung einer Sensorkennlinie eines Positionssensors |
| DE10140461A1 (de) * | 2001-08-17 | 2003-02-27 | Bayerische Motoren Werke Ag | Drehaktor-Vorrichtung zur Hubsteuerung eines Gaswechselventils im Zylinderkopf einer Brennkraftmaschine |
| DE10252991A1 (de) * | 2002-11-14 | 2004-05-27 | Bayerische Motoren Werke Ag | Schwenkaktor-Vorrichtung zur Hubsteuerung eines Gaswechselventils im Zylinderkopf einer Brennkraftmaschine |
| DE10318245B4 (de) * | 2003-03-31 | 2008-03-20 | Bayerische Motoren Werke Ag | Verfahren zur Steuerung der Bewegung eines Ankers eines elektromagnetischen Aktuators |
| DE10358936A1 (de) * | 2003-12-12 | 2005-07-07 | Bayerische Motoren Werke Ag | Elektrischer Ventiltrieb mit Drehaktuator |
-
2004
- 2004-11-12 DE DE102004054773A patent/DE102004054773B4/de not_active Expired - Fee Related
-
2005
- 2005-10-19 WO PCT/EP2005/011220 patent/WO2006050789A1/de not_active Ceased
- 2005-10-19 DE DE502005011172T patent/DE502005011172D1/de not_active Expired - Lifetime
- 2005-10-19 EP EP05801994A patent/EP1812692B1/de not_active Expired - Lifetime
- 2005-10-19 AT AT05801994T patent/ATE503085T1/de active
-
2007
- 2007-05-11 US US11/798,307 patent/US7739986B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2006050789A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102004054773B4 (de) | 2006-12-28 |
| DE102004054773A1 (de) | 2006-05-24 |
| WO2006050789A1 (de) | 2006-05-18 |
| EP1812692B1 (de) | 2011-03-23 |
| US20070215083A1 (en) | 2007-09-20 |
| US7739986B2 (en) | 2010-06-22 |
| ATE503085T1 (de) | 2011-04-15 |
| DE502005011172D1 (de) | 2011-05-05 |
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