EP1537299A1 - Dispositif de decalage de phase p - Google Patents

Dispositif de decalage de phase p

Info

Publication number
EP1537299A1
EP1537299A1 EP03797163A EP03797163A EP1537299A1 EP 1537299 A1 EP1537299 A1 EP 1537299A1 EP 03797163 A EP03797163 A EP 03797163A EP 03797163 A EP03797163 A EP 03797163A EP 1537299 A1 EP1537299 A1 EP 1537299A1
Authority
EP
European Patent Office
Prior art keywords
phase adjustment
camshaft
adjustment device
sensor
crankshaft
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.)
Withdrawn
Application number
EP03797163A
Other languages
German (de)
English (en)
Inventor
Dirk Neubauer
Markus Wilke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schaeffler Engineering GmbH
Original Assignee
AFT Atlas Fahrzeugtechnik GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE10315317.9A external-priority patent/DE10315317B4/de
Application filed by AFT Atlas Fahrzeugtechnik GmbH filed Critical AFT Atlas Fahrzeugtechnik GmbH
Publication of EP1537299A1 publication Critical patent/EP1537299A1/fr
Withdrawn legal-status Critical Current

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
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • 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
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/352—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using bevel or epicyclic gear
    • 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
    • F01L1/024—Belt drive
    • 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
    • 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
    • F01L2820/00—Details on specific features characterising valve gear arrangements
    • F01L2820/02—Formulas
    • 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
    • F01L2820/00—Details on specific features characterising valve gear arrangements
    • F01L2820/04—Sensors
    • F01L2820/041—Camshafts position or phase sensors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2101—Cams
    • Y10T74/2102—Adjustable

Definitions

  • the invention relates to a phase adjustment device for adjusting the angle of rotation of a camshaft relative to the angle of rotation of a crankshaft.
  • the crankshaft drives one or more camshafts via a primary drive, which is designed, for example, as a toothed belt.
  • a camshaft gear is attached to each camshaft, via which the primary drive drives the camshaft.
  • the rotation angle of the crankshaft is translated at any time, 720 ° crankshaft rotation angle ⁇ ⁇ being converted into 360 ° camshaft rotation angle ⁇ N.
  • an internal combustion engine can be optimized, in particular with regard to fuel consumption, exhaust gas emissions and running culture, if the system coupled via the primary drive between the camshaft and crankshaft can be changed and the phase between the two shafts is thereby adjusted.
  • AI sensor devices are attached to sense the phase adjustment on the camshaft and the crankshaft or on the camshaft wheel, which sense the actual position of the camshaft relative to the actual position of the crankshaft or the camshaft wheel, thereby reducing the positions or the speeds of the shafts can also be determined.
  • Such a sensor device can, for. B. realized by non-contact Hall sensors.
  • a disadvantage of such a construction is that discrete angle marks have to be attached to the camshaft and crankshaft, which can then be scanned by the sensors.
  • the number of these angular marks on the camshaft depends on the number of cylinders or the periodic camshaft alternating torque. Because it is not possible to attach any number of angle marks to the camshaft, the measurement accuracy of the position detection depends on the distance between two adjacent angle marks. The longer the period of time that is required to sense two adjacent angle marks, the less precise the measurement result, i.e. the phase adjustment cannot be determined exactly.
  • the object of the invention is to provide a phase adjustment device which determines an accurate measured value for the phase adjustment even at low speeds or even when the crankshaft is at a standstill and can thus regulate the phase adjustment to the desired value even in the lower speed range.
  • the phase adjustment device comprising a drive and a gearbox which has a high transmission ratio relative to the camshaft, a high translation means that the speed of the sensed part of the phase adjustment device at least during the adjustment depending on the adjustment direction is many times greater or less than the speed of the camshaft.
  • the advantages of the invention are that a higher resolution with regard to the position of the camshaft can be achieved, since individual mechanical components of the phase adjuster have a higher or lower adjustment speed than the speed of the camshaft, at least during the adjustment, depending on the adjustment direction.
  • the sensors for such phase adjustment devices can be integrated easily and inexpensively. Such a structure has a higher quality when measuring the phase adjustment.
  • Phase adjustment devices can also be used to precisely control internal combustion engines at low speed or from a standing start.
  • the sensor on the phase shift plate either the position of the electric motor rotor or the position of a gear part that has a different speed when adjusted compared to the camshaft due to the translation.
  • incremental sensors which can be attached externally to the motor or which are already integrated in some electric motors, for example as Hall sensors, have proven particularly advantageous.
  • the position of the rotor can also be determined by measuring electrical quantities of the running electric motor, in particular the counter-induction voltage.
  • FIG. 1 Camshaft with phase adjustment device
  • FIG. 2 phase adjustment device with incremental sensor on the rotor of an electric motor
  • FIG. 3 phase adjustment device with incremental sensor on the drive axis of an electric motor
  • FIG. 4 phase adjustment device with incremental sensor on a gear part
  • FIG. 5 phase adjustment device with voltage measurement on the electric motor.
  • Figure 1 shows a camshaft 9 with phase adjustment device 1.
  • the crankshaft 12 drives the camshaft gear 8 via a primary drive 7.
  • the respective position or speed of the crankshaft 12 is detected by a sensor 13.
  • This position information is forwarded to a control unit (not shown) and made available for further processing.
  • the crankshaft 12 drives the camshaft 9 via the primary drive 7 and the camshaft gear 8 coupled to it.
  • the position or speed of the camshaft 9 is also detected with the aid of a sensor 11.
  • four camshaft markings 10 are attached to the camshaft in the application example, so that at a known speed of the crankshaft z. B. can measure the time that has passed between sensing a crankshaft marking and a camshaft marking.
  • this time span can be offset to a phase adjustment angle, which represents the phase adjustment between camshaft 9 and crankshaft 12, which is caused by phase adjuster 1.
  • phase adjustment angle represents the phase adjustment between camshaft 9 and crankshaft 12, which is caused by phase adjuster 1.
  • the phase adjuster 1 has at least At least one further sensor device 14, which can detect different positions or speeds of moving, in particular rotating or tumbling, components 3, 4, 6 in the phase adjuster.
  • This phase adjuster 1 can act on the camshaft gear 8 or directly on the camshaft 9 so that it is accelerated or decelerated with respect to the primary drive 7 and thus also the crankshaft 12. If the phase adjuster 1 is to have no influence on the camshaft 9, it adapts to the movement of the camshaft gear 8.
  • the phase adjuster 1 shown here includes a drive 2, 4 and a gear 5, the gear being moved by the electric motor 2 via a drive shaft 4. This gear 5 acts on the camshaft gear 8 or the camshaft
  • the speed of the components 3, 4, 6 on the electric motor 2 and in the transmission 5 of the phaser 1 are proportional to the camshaft speed. That is, if a component of the phase adjuster 1 changes its position, the position of the camshaft 9 is also changed in a predetermined manner. However, the phaser 1 are on the side of the rotational speeds significantly higher or lower, at least during the adjustment depending on the direction of adjustment the rotational speed of the camshaft 9. In a phase adjuster 1 with the swash plate transmissions, the relative rotational speed of the electric motor 2 'during the adjustment about 60 times higher than as the adjustment speed of the camshaft 9.
  • the position of the camshaft can be determined even at low speeds of the crankshaft 12 Determine 9, because then the high gear ratio (in the application example 60: 1) allows a fine measurement of the relative adjustment of the camshaft.
  • the phase adjustment between camshaft 9 and crankshaft 12 can be determined, for example, as follows:
  • the current speed of the crankshaft 12 is calculated from the crankshaft signals that arise when the crankshaft markings (not shown) are detected by the sensor.
  • the speed of the camshaft gear 8 is calculated from the crankshaft speed.
  • the rotational speed of a component 3, 4, 6 of the phase adjustment 1 is determined by means of the phase adjustment device sensor 14, with which the
  • Angle of rotation of this component is calculated as an absolute or relative value.
  • the relative rotation between this component 3, 4, 6 and the primary drive 7 is calculated from the speeds or the angles of rotation of a component 3, 4, 6 of the phase adjustment device 1 and the primary drive 7.
  • the phase adjustment can be measured by: bringing the phase adjuster 1 into a position that serves as a reference mark (the end stops of the phase adjuster 1 are particularly suitable for this), then the actual angle determination and the regulation of the phase position are carried out alone based on the first actual angle. If the shaft speed increases again, the adjustment is made again with the second actual angle.
  • Such sensor device 14 for detecting the position of a component 3, 4, 6 of the phase adjuster can, as shown in FIG. 2, have an incremental sensor 19 which, for. B. detected by marks 15 on the rotor 3 of the electric motor 2, the movement of the phase adjuster 1. At least the number of rotations of the rotor 3 are recorded here. Likewise, in the case of several markings 15 on the rotor 3, the position of the rotor 3 can also be changed during one revolution. be specified more precisely. Is the translation between the rotor 3 and camshaft 9 known and this is z. B. 60: 1, the position of the camshaft can be determined even at low speeds or at a standstill to about 1/60 within one revolution of the camshaft 9.
  • An example of an incremental sensor 19 is the Hall sensor, which may already be integrated in the electric motor 2, for example. External sensors such. B. in the form of light barriers can be used for the measurements. These can also easily sense markings 15 which indicate a rotation or a specific position.
  • Such an incremental sensor 19 can alternatively, as shown in FIG. 3, be attached to the drive shaft 4 between the electric motor 2 and gear 5 or directly to a gear part 6 as shown in FIG. For this purpose, the corresponding parts also have markings 16, 17 which the corresponding sensor 19 can measure.
  • phase adjustment devices 1 that, due to the gear ratio, a part 3, 4, 6 of the phase adjustment device 1, the speed or position of which is measured, at least during the adjustment, depending on the adjustment direction, a higher or lower speed than the speed of the camshaft 9 having .
  • FIG. 5 shows that the position of a rotating part 3 of the phase adjustment device 1 can be determined even without a discrete sensor system. This is done, for example, by electronically communicating dc motors, the mutual induction voltage of the non-current-carrying coil is measured. The speed or the position of the rotor 3 in the electric motor 2 can then be sensed with this value. For this there is a sensor 18 for measuring an electrical one
  • phase adjuster primary drive camshaft gear camshaft 0 camshaft marking

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

L'invention concerne un dispositif de décalage de phase (1) qui comprend un entraînement (2) pourvu d'un arbre d'entraînement (4) et une transmission (5). Le dispositif présenté sert au décalage de la phase entre un arbre à cames (9) et un vilebrequin (12). Selon l'invention, ce dispositif de décalage de phase (1) comporte un dispositif de détection (14, 15, 16, 17, 18, 19), au moyen duquel la vitesse de rotation ou la position d'un composant (2, 3, 4, 5, 6) du dispositif de décalage de phase (1) est mesurée. On obtient ainsi une meilleure résolution en ce qui concerne la position de l'arbre à cames.
EP03797163A 2002-09-13 2003-08-04 Dispositif de decalage de phase p Withdrawn EP1537299A1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10242660 2002-09-13
DE10242660 2002-09-13
DE10315317.9A DE10315317B4 (de) 2002-09-13 2003-04-04 Verfahren zum Betrieb einer Phasenverstellvorrichtung und Phasenverstellvorrichtung zur Durchführung des Verfahrens
DE10315317 2003-04-04
PCT/DE2003/002606 WO2004027223A1 (fr) 2002-09-13 2003-08-04 Dispositif de decalage de phase p

Publications (1)

Publication Number Publication Date
EP1537299A1 true EP1537299A1 (fr) 2005-06-08

Family

ID=32031474

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03797163A Withdrawn EP1537299A1 (fr) 2002-09-13 2003-08-04 Dispositif de decalage de phase p

Country Status (3)

Country Link
US (1) US7201124B2 (fr)
EP (1) EP1537299A1 (fr)
WO (1) WO2004027223A1 (fr)

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ES2305959T3 (es) * 2004-08-28 2008-11-01 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Procedimiento para determinar la posicion angular de giro del arbol de levas de un motor de combustion de pistones alternativos con relacion al cigueñal.
JP4699310B2 (ja) * 2006-03-27 2011-06-08 トヨタ自動車株式会社 可変バルブタイミング装置
DE102006017232A1 (de) 2006-04-12 2007-10-25 Schaeffler Kg Synchronisationsvorrichtung für einen Motor
JP5055103B2 (ja) * 2007-12-14 2012-10-24 三菱重工業株式会社 高圧ポンプ用カムのトップ位置検出装置
JP2009281343A (ja) * 2008-05-26 2009-12-03 Hitachi Automotive Systems Ltd 内燃機関の制御装置
JP4937188B2 (ja) * 2008-05-26 2012-05-23 日立オートモティブシステムズ株式会社 内燃機関の可変動弁装置
DE102008039008A1 (de) * 2008-08-21 2010-02-25 Schaeffler Kg Verfahren zur Verstellung einer Nockenwelle eines Verbrennungsmotors, Nockenwellenverstellsystem und Verbrennungsmotor mit verstellbarer Nockenwelle
US8682564B2 (en) * 2010-08-30 2014-03-25 Delphi Technologies, Inc. Camshaft position sensing in engines with electric variable cam phasers
US9046447B2 (en) * 2012-12-27 2015-06-02 Hyundai Motor Company Crank angle detection apparatus
DE102013222839A1 (de) 2013-01-21 2014-07-24 Schaeffler Technologies Gmbh & Co. Kg Verfahren zum Betrieb eines Nockenwellenverstellers
DE102014213253B4 (de) 2014-07-08 2017-12-28 Schaeffler Technologies AG & Co. KG Verfahren zum Betrieb eines Nockenwellenverstellers und Regelvorrichtung für einen Nockenwellenversteller

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Also Published As

Publication number Publication date
WO2004027223A1 (fr) 2004-04-01
US20050188935A1 (en) 2005-09-01
US7201124B2 (en) 2007-04-10

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