EP1457645B1 - Ventiltrieb für einen Verbrennungsmotor - Google Patents
Ventiltrieb für einen Verbrennungsmotor Download PDFInfo
- Publication number
- EP1457645B1 EP1457645B1 EP04003090A EP04003090A EP1457645B1 EP 1457645 B1 EP1457645 B1 EP 1457645B1 EP 04003090 A EP04003090 A EP 04003090A EP 04003090 A EP04003090 A EP 04003090A EP 1457645 B1 EP1457645 B1 EP 1457645B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- extreme
- crankshaft angle
- electronic unit
- stroke curve
- 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.)
- Expired - Lifetime
Links
Images
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
-
- 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
- F01L9/21—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids
- F01L2009/2125—Shaft and armature construction
- F01L2009/2126—Arrangements for amplifying the armature stroke
-
- 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
- F01L9/21—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids
- F01L2009/2132—Biasing means
- F01L2009/2134—Helical springs
- F01L2009/2136—Two opposed springs for intermediate resting position of the armature
-
- 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
- F01L2201/00—Electronic control systems; Apparatus or methods therefor
Definitions
- the present invention relates to an electrically controlled valve train for a Internal combustion engine according to the preamble of claim 1 (see DE-A-10140461).
- the camshaft is mechanically over a timing chain or a timing belt driven by the crankshaft.
- valve train This is possible through an electromagnetic valve train. This is every valve or each valve group of a cylinder associated with an "actuator".
- actuator units Two different basic types of actuator units are explored. In which first type are a valve or a valve group an opening and Closing magnet assigned. By energizing the magnets, the valves can be moved axially, i. be opened or closed. Such However, valve trains are difficult to control in terms of control engineering.
- Another type is a valve or a valve group a back and forth swing Associated actuating cams. The actuating cam is thereby by a pivoting electric swing motor supportive.
- the object of the invention is an electric valve drive with a Schwenkaktor And to create a control electronics, the best possible adaptation of the Opening / closing behavior to the current operating state of Internal combustion engine allows.
- the invention is based on a valve train with a Schwenkactor, by an electric motor or other actuator, such as an actuator; a hydraulic Actuator is actuated.
- the swivel actuator is for actuating one or more Valves provided.
- the essence of the invention consists in an electronic control system for Control of the electric motor.
- the electric motor or the cam is through the Control electronics so controlled that the valve according to a Hubverlaufskurve moves, the best possible the current operating state the engine, in particular the thermodynamic conditions in the engine adjusted is.
- the valve passes through in accordance with the control of the electric motor through the Control electronics one between an opening crank angle and a Closing crank angle lying Hubverlaufskurve, which depends on current operating state of the internal combustion engine from the electronics a stored set of stroke curves selected or dependent from the current operating state according to a predetermined "Bildungsvorschrift" is formed.
- the valve to be passed through Hubverlaufskurve is dependent on the current operating state of Internal combustion engine modifiable by the control logic such that the location of the Center of gravity of the surface under the stroke curve with respect to the Crankshaft angle is variable and without the Opening crankshaft angle or closing crankshaft angle are moved got to.
- Hubverlaufskurven be generated, which differ from each other in terms of a variety of properties can.
- Individual Hubverlaufskurven can, for example, in terms differ in their number of local and global extrema.
- Hubverlaufskurven generated in terms of their opening and / or Differentiate closing gradients.
- Hubverlaufskurven be generated, in terms of differentiate their opening and / or closing crankshaft angle.
- can Hubverlaufskurven be generated with different sized opening strokes, etc.
- Hubverlaufskurven can be generated, whose Form themselves with regard to the location of their centroids in relation to the Differ crankshaft angle, i. as regards the location of the center of gravity of the Areas under the respective stroke curve. Hubverlaufkurven can through corresponding control of the electric motor to be modified and indeed without a shift in the opening and closing crankshaft angle.
- FIG. 1 shows a valve drive 1 with a valve 2 which is only schematically represented by one here shown valve spring 3 is pressed “up” in its closed position. To open the valve 2, it must be against the spring force of the valve spring 3 after pressed down.
- a valve lever 4 is provided which by a Cam 5 can be pushed down.
- the cam 5 is pivotable about a Swivel axle 6 stored in the engine.
- the cam 5 here has two cam flanks on, namely a so-called high dynamic edge 7 and a low-dynamic edge 8.
- a pin 9 is provided on the cam 5 against which an actuator spring 10 suppressed.
- the high-dynamics edge 7 and the low-dynamics edge 8 are each different Operating conditions of the engine assigned, which is not closer to enter.
- the valve 2 can be opened via the valve lever 4 by the cam 5 is rotated clockwise or counterclockwise. at a clockwise rotation, the valve 2 by the high dynamic edge. 7 open. In a counterclockwise rotation, the valve is through the Low dynamic edge 8 open
- an electric motor (not shown) provided with the cam in one or in the other direction can be pivoted.
- low dynamic mode i. when the valve 2 with the low dynamic edge of Cam 5 is opened, can be controlled by driving the electric motor on the Course of the lift curve of the valve 2 are influenced.
- Alone by the Control of the electric motor can be an almost arbitrary number of different Hubkurvenverrise be generated.
- the electric motor is controlled, that the Hubkurvenverlauf as optimally as possible to the current operating state of the engine, especially on the thermodynamic conditions is tuned in the engine.
- charge exchange, mixture preparation, Acoustics, consumption and emissions of the internal combustion engine are optimized.
- FIGS. 2 and 3 show, by way of example, different possible stroke characteristics for an inlet valve.
- FIG. 2 shows a stroke profile for an inlet valve with which a good mixture formation can be achieved with a warm engine and a low engine load.
- the valve opens at the crankshaft angle E01. This is followed by an increase, described by the crankshaft angle difference EO_F, to a global maximum. In this position, the valve expressed in degrees crankshaft angle the crankshaft angle E Hub 1 is held. Subsequently, the valve is again partially closed, ie the valve lift drops to a local extremum E hub 2, which is reached at ES1. The transition is described by the crankshaft difference ES_F. Then the valve is closed. At crankshaft angle ES2, the valve is then completely closed.
- FIG 3 shows a Hubverlaufskurve for an inlet valve, which is conveniently controlled with a cold engine to keep the formation of hydrocarbons as low as possible, ie approximately in the first 20 seconds after the cold start.
- the inlet valve is partially opened here when the crankshaft angle EO2 is reached, ie an increase to a local extremum takes place.
- the inlet valve is then partially kept open for the duration E Hub 2.
- an increase takes place to the global extremum, ie the inlet valve is opened to the maximum.
- the inlet valve is kept open for the duration E hub 1.
- a drop in the Hubverlaufskurve The inlet valve can either be completely closed, which is then reached at ES1, or at first partially, which corresponds to the dashed local extremum. At the latest at time ES2, the inlet valve is then closed again.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Description
- Figur 1
- das Grundprinzip eines Ventiltriebs gemäß der Erfindung; und
- Figur 2, 3
- verschiedene Hubverlaufskurven, die mit dem Ventiltrieb der Figur 1 erzeugbar sind.
Claims (6)
- Ventiltrieb (1) für einen Verbrennungsmotor, mit
einem Ventil (2),
einem Nocken (5), der hin- und herschwenkbar angeordnet ist und der zur Betätigung des Ventils (2) vorgesehen ist,
einem Elektromotor zur Schwenkbetätigung des Nockens (5) und
einer Elektronik zur Ansteuerung des Elektromotors in Abhängigkeit von momentanen Betriebsparametern des Motors, wobei das Ventil (2) entsprechend der Ansteuerung eine zwischen einem Öffnungskurbelwellenwinkel und einem Schließkurbelwellenwinkel liegende Hubverlaufskurve durchläuft und
die Elektronik eine Steuerlogik aufweist, welche in Abhängigkeit vom momentanen Betriebszustand des Verbrennungsmotors eine Modifizierung der Hubverlaufskurve ermöglicht,
dadurch gekennzeichnet, dass die Hubverlaufskurve von der Steuerlogik derart modifizierbar ist, dass die Lage des Schwerpunkts der Fläche unter der Hubverlaufskurve ohne Änderung der Motordrehzahl in Bezug auf den Kurbelwellenwinkel veränderbar ist und zwar auch ohne einer Verschiebung des Öffnungs- und Schließkurbelwellenwinkels. - Ventiltrieb (1) nach Anspruch 1, wobei die Elektronik eine Steuerlogik aufweist, mit der Hubverlaufskurven erzeugbar sind, die sich hinsichtlich der Anzahl und/oder der Abfolge lokaler und globaler Extrema bzw. Extremwertabschnitte zwischen dem Öffnungskurbelwellenwinkel und dem Schließkurbelwellenwinkel voneinander unterscheiden.
- Ventiltrieb (1) nach Anspruch 1 oder 2, wobei die Elektronik eine Steuerlogik aufweist, mit der eine Hubverlaufskurve erzeugbar ist, die vom Öffnungskurbelwellenwinkel an einen Anstieg auf ein globales Extremum bzw. einen globalen Extremwertabschnitt aufweist, anschließend einen Abfall auf ein lokales Extremum bzw. auf einen lokalen Extremwertabschnitt und dann einen Abfall, bis das Ventil wieder geschlossen ist, wobei dieser Hubverlauf an einem Einlassventil eingesteuert wird, wenn der Verbrennungsmotor Normalbetriebstemperatur erreicht hat und im Niedriglastbetrieb arbeitet.
- Ventiltrieb (1) nach einem der Ansprüche 1 bis 3, wobei die Elektronik eine Steuerlogik aufweist, mit der eine Hubverlaufskurve erzeugbar ist, die vom Öffnungskurbelwellenwinkel an einen Anstieg auf ein lokales Extremum bzw. auf einen lokalen Extremwertabschnitt aufweist, anschließend einen weiteren Anstieg auf ein globales Extremum bzw. auf einen globalen Extremwertabschnitt und dann einen Abfall, bis das Ventil wieder geschlossen ist, wobei dieser Hubverlauf an einem Einlassventil eingesteuert wird, wenn der Verbrennungsmotor unterhalb der Normalbetriebstemperatur betrieben wird.
- Ventiltrieb (1) nach einem der Ansprüche 1 bis 4, wobei die Elektronik eine Steuerlogik aufweist, mit der eine Hubverlaufskurve erzeugbar ist, die vom Öffnungskurbelwellenwinkel an einen Anstieg auf ein lokales Extremum bzw. einen lokalen Extremwertabschnitt aufweist, anschließend einen weiteren Anstieg auf ein globales Extremum bzw. auf einen globalen Extremwertabschnitt, dann einen Abfall auf ein lokales Extremum und dann einen Abfall, bis das Ventil wieder geschlossen ist.
- Ventiltrieb (1) nach einem der Ansprüche 1 bis 5, wobei in der Elektronik eine Schar von Hubverlaufskurven abgelegt ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10311275 | 2003-03-14 | ||
| DE10311275A DE10311275A1 (de) | 2003-03-14 | 2003-03-14 | Ventiltrieb für einen Verbrennungsmotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1457645A1 EP1457645A1 (de) | 2004-09-15 |
| EP1457645B1 true EP1457645B1 (de) | 2005-08-17 |
Family
ID=32748255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04003090A Expired - Lifetime EP1457645B1 (de) | 2003-03-14 | 2004-02-12 | Ventiltrieb für einen Verbrennungsmotor |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1457645B1 (de) |
| DE (2) | DE10311275A1 (de) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8360387B2 (en) | 2010-03-26 | 2013-01-29 | Bose Corporation | Actuator including mechanism for converting rotary motion to linear motion |
| US9291300B2 (en) | 2013-03-15 | 2016-03-22 | Bose Corporation | Rotary actuator driven vibration isolation |
| DE102015117921A1 (de) | 2015-10-21 | 2017-04-27 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Verfahren zur Beeinflussung der Gemischbildung und der Ladungsbewegung bei einer Kolbenbrennkraftmaschine |
| US11353084B2 (en) | 2013-03-15 | 2022-06-07 | Clearmotion Acquisition I Llc | Rotary actuator driven vibration isolation |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2885389B1 (fr) | 2005-05-03 | 2007-10-19 | Peugeot Citroen Automobiles Sa | Procede de reduction des emissions d'hydrocarbures d'un moteur froid et dispositif et moteur mettant en oeuvre ce procede |
| DE102006005943A1 (de) | 2006-02-09 | 2007-08-23 | Bayerische Motoren Werke Ag | Verbrennungsmotor mit einem elektrischen Ventiltrieb |
| DE102006005944A1 (de) * | 2006-02-09 | 2007-08-23 | Bayerische Motoren Werke Ag | Verbrennungsmotor mit einem elektrischen Ventiltrieb |
| DE102006023654B3 (de) * | 2006-05-18 | 2007-10-25 | Esa Patentverwertungsagentur Sachsen-Anhalt Gmbh | Anordnung zur Erzeugung einer nichtlinearen Kraft- bzw. Drehmomentkennlinie |
| FR2909129B1 (fr) * | 2006-11-27 | 2012-08-03 | Peugeot Citroen Automobiles Sa | Procede perfectionne de commande du fonctionnement d'un ensemble de cylindre de moteur a combustion interne. |
| DE102008061236A1 (de) | 2008-12-09 | 2010-06-10 | Man Diesel Se | Verfahren und Ventilnocke zur Ventilsteuerung eines Verbrennungsmotors |
| GB0920152D0 (en) | 2009-11-18 | 2009-12-30 | Camcon Ltd | Rotary electromagnetic actuator |
| DE102012218525B4 (de) * | 2012-10-11 | 2015-06-03 | Continental Automotive Gmbh | Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine |
| DE102013210178A1 (de) * | 2013-05-31 | 2014-12-04 | Robert Bosch Gmbh | Verfahren zum Ansteuern einer Nockenwelle |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4864984A (en) * | 1986-09-02 | 1989-09-12 | Blish Nelson A | Rotary valve internal combustion engine |
| CN1327110C (zh) * | 1999-08-23 | 2007-07-18 | 丰田自动车株式会社 | 发动机的阀特性控制装置 |
| DE10019744A1 (de) * | 2000-04-20 | 2001-10-25 | Fev Motorentech Gmbh | Verfahren zur Beeinflussung von Gemischbildung und Ladungsbewegung in einem Zylinder einer fremdgezündeten Kolbenbrennkraftmaschine |
| 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 |
-
2003
- 2003-03-14 DE DE10311275A patent/DE10311275A1/de not_active Withdrawn
-
2004
- 2004-02-12 EP EP04003090A patent/EP1457645B1/de not_active Expired - Lifetime
- 2004-02-12 DE DE502004000040T patent/DE502004000040D1/de not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8360387B2 (en) | 2010-03-26 | 2013-01-29 | Bose Corporation | Actuator including mechanism for converting rotary motion to linear motion |
| US9291300B2 (en) | 2013-03-15 | 2016-03-22 | Bose Corporation | Rotary actuator driven vibration isolation |
| US11353084B2 (en) | 2013-03-15 | 2022-06-07 | Clearmotion Acquisition I Llc | Rotary actuator driven vibration isolation |
| DE102015117921A1 (de) | 2015-10-21 | 2017-04-27 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Verfahren zur Beeinflussung der Gemischbildung und der Ladungsbewegung bei einer Kolbenbrennkraftmaschine |
| DE102015117921B4 (de) | 2015-10-21 | 2024-10-02 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Verfahren zur Beeinflussung der Gemischbildung und der Ladungsbewegung bei einer Kolbenbrennkraftmaschine |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1457645A1 (de) | 2004-09-15 |
| DE502004000040D1 (de) | 2005-09-22 |
| DE10311275A1 (de) | 2004-09-30 |
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