EP1966465A1 - Nockenwellenversteller mit einer verriegelungseinrichtung - Google Patents
Nockenwellenversteller mit einer verriegelungseinrichtungInfo
- Publication number
- EP1966465A1 EP1966465A1 EP06830175A EP06830175A EP1966465A1 EP 1966465 A1 EP1966465 A1 EP 1966465A1 EP 06830175 A EP06830175 A EP 06830175A EP 06830175 A EP06830175 A EP 06830175A EP 1966465 A1 EP1966465 A1 EP 1966465A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- locking
- camshaft adjuster
- end position
- early
- locking element
- 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
- 238000002485 combustion reaction Methods 0.000 claims abstract description 33
- 230000010349 pulsation Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000003319 supportive effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
-
- 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
- F01L1/3442—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 hydraulic chambers with variable volume to transmit the rotating force
-
- 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
- F01L1/3442—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 hydraulic chambers with variable volume to transmit the rotating force
- F01L2001/3445—Details relating to the hydraulic means for changing the angular relationship
- F01L2001/34483—Phaser return springs
Definitions
- the invention relates to a camshaft adjuster of an internal combustion engine having a locking device, in particular according to the preamble of claims 1 and 3.
- a locking device is known with a locking pin designed as a locking element, the front end portion is formed cone-shaped and in a "bruised
- the locking pin is spring-loaded and has two hydraulic control surfaces, of which the first, frontal control surface is in hydraulic communication with a chamber of the camshaft adjuster and a second , formed by a shoulder of the locking pin control surface is in hydraulic communication with another, oppositely acting chamber of the camshaft adjuster.
- a locking device in which a locking pin cooperates with a stepped locking groove, wherein different plateaus of the stepped locking groove correspond to different locking positions, for example a most advanced angle, an intermediate position and a most retarded angle ,
- a locking device in which a first locking pin between an end position "early” and a center position assumes a “locked position”, while a second locking pin “locked position” between a final position “late” and the Can take center position.
- the first lock pin With a drop in oil pressure to zero, the first lock pin can be brought into the "locked position” while the second lock pin remains in the "unlocked position”.
- the inner rotor is adjusted by a drag torque of the camshaft until “late” until the first locking pin reaches the center position. At this time, the second locking pin also enters the "locked position".
- the controller raises the oil pressure in a first oil pressure line, a first working chamber and in the area of the first locking pin. Thereby, the first locking pin is unlocked, while the second locking pin is held in pressure contact with the second center stop. For a transition to a controlled operation, the controller increases the pressure in the second working chamber, thereby also unlocking the second locking pin, so that the inner rotor can move freely.
- a corresponding locking device is also known from US 6,450,137 B2.
- the invention has for its object to propose a locking device, which
- Influence on the adjustment angle in connection with the establishment of a locking position can take place in different (alternative or cumulative) ways:
- the engine Before stopping the engine can be brought about by suitable loading of the chambers of the camshaft adjuster targeted adjustment of the camshaft adjuster in preparation for locking.
- the internal combustion engine can be selectively turned off in an end position "early” or an end position "late”.
- a "predictive method" can also be used, by means of which a prediction is to be made about which locking could be advantageous in a future operating state. For example, even for a hybrid vehicle, a distinction or estimation can be made as to whether the internal combustion engine is only for one NEN short period, eg. For a start-stop operation, is turned off or a shutdown of the internal combustion engine for a longer period is desired.
- a predictive method could be to monitor a speed of a vehicle wheel in conjunction with the occurrence of overrun operation, from which a distinction can be made for approaching the motor vehicle to an intersection on the one hand and parking operation on the other.
- a separate adjusting device may be provided which brings the camshaft adjuster with or after switching off the internal combustion engine in a targeted position in the range of an end position.
- a change in the position of the camshaft adjuster may result from vibrations or pulsations for which the rotor can be moved relative to the stator in both directions of adjustment. For example, it may be pulsations for the loading of the chambers, vibrations due to the operation of the camshaft o. ⁇ .
- an adjustment can occur in the direction of the locking position, for which at least one of the chambers is subjected to a low, far below the working pressure working pressure, which can correlate in a gradual approach to a locking position.
- locking elements When acting in the end positions according to the invention locking elements it may be single-acting locking elements or a double, redundant locking element, as this is disclosed in the aforementioned non-prepublished patent application of the Applicant, wherein the geometries of the locking element and the receptacle for the locking element from this unpublished prior art the present invention are transferable.
- a restart of the internal combustion engine after a lock in an end position "early” or “late” can lead to a jerktransportren or more uniform behavior of the internal combustion engine, because by the control times, a decompression of the internal combustion engine takes place.
- a locking in an end position can be useful only for a targeted parking.
- An additional lock in a "late” end position can also serve as a kind of "emergency anchor” if the lock does not work in a center position.
- At least a third locking element is provided, which in a third position, namely in a between the end position "early” and the end position "late” arranged “center position” can be locked.
- a third locking position By means of such a third locking position, the operating conditions to be expected after switching off the internal combustion engine can be taken into account in even greater detail.
- the camshaft adjuster is in a central position between an end position and the "center position", so that according to the invention the camshaft adjuster has to cover a maximum of half the distance between the end position and the "center position".
- an influencing of the position of the camshaft adjuster takes place with shutdown.
- a compensation element in particular a spring, such as a torsion spring or acting in the circumferential direction compression spring.
- Such a compensation element can influence the force ratios on the camshaft adjuster such that when the camshaft adjuster is switched off between the end position "early” and the "center position", an adjustment thereof takes place in the direction of the end position "early”. In the end position then the locking of the camshaft adjuster takes place.
- FIG. 1 shows a camshaft adjuster 10 for an internal combustion engine, in which a drive element 1 1, which, for example, is connected in a rotationally fixed manner to a sprocket and is driven by a timing chain, opposite to a nem driven element 12, which is for example rotationally fixedly coupled to a camshaft 13, in the course of an adjusting movement of the camshaft adjuster 10 about a vertically oriented to the plane of rotation axis 14 rotatable defined.
- working spaces 15 here five
- working spaces 15 are formed, which are bounded radially outwards and in both circumferential directions by the drive element 1 1 and radially inwardly by a lateral surface of the output element 12.
- Wings 16 of the output element 1 1 subdivide the working spaces 15 into a chamber 17, by means of which an adjustment of the camshaft adjuster 10 in the direction of the end position "late” 19 takes place, and a chamber 18, in their hydraulic actuation an actuating movement in the direction of the end position "early” 20 takes place.
- the camshaft adjuster 10 In the positioning position outlined in FIG. 1, the camshaft adjuster 10 is in a "center position" for which the vanes 16 are located approximately in the middle between the end position "early” (20) and the end position "late” (19).
- the camshaft adjuster 10 has a center lock with two locking elements 21, 22.
- the locking elements 21, 22 respectively lock in different areas between one end position and the middle position, so that both locking elements 21, 22 are locked to reach the central position.
- a detailed description of the operation of such a central locking with two locking pins can be found for example in the publications DE 102 53 496 and US 6,450,137 B2.
- the locking elements 21, 22 are referred to in the context of the invention as a third locking element.
- the camshaft adjuster 10 has a first locking element 23, which in the region of the end position "early” 20 can be transferred from an "unlocked position” into a “locked position".
- a second locking element 24 can be transferred in the end position "late” 19 of the "unlocked position” in the "locked position".
- the locking elements 21, 22, 23, 24 are in particular an axially movable locking pin, which in the "unlocked position” produces a positive connection between the drive element 1 1 and the output member 12, while in the “unlocked position” this positive connection is released.
- the locking pin is in particular spring-loaded in the direction of the "locked position” and can be moved against the spring action into the "unlocked position” by applying pressure in the region of an end face or an associated active surface of the locking pin.
- the first locking element 23 is acted upon by a hydraulic connection 25 from the pressure in a chamber 17, while the second locking element 24 is acted upon via a hydraulic connection 27 to the pressure in a chamber 18.
- the camshaft adjuster 10 is equipped with a compensating element 27, which influences the force ratios of the camshaft adjuster 10 in the direction of an adjustment in the direction of the end position "early". If this influencing greater than a possible friction torque of the elements to be adjusted at a start of the engine and, for example, the camshaft adjuster 10 between the end position "early” 20 and the "center position” turned off, the compensation element 27 can be an adjustment of the camshaft adjuster 10 in the direction of End position "early" 20 effect.
- a lock can, for example, come into effect in the end position "early", for example in a V-type internal combustion engine. If in this case a control valve of a bank of the V-type internal combustion engine is blocked by a chip and an adjustment takes place in the direction of the end position "early”, then the camshaft adjuster of the other bank can also be purposefully adjusted and locked to "early". The same applies accordingly for an adjustment in the direction of "late”.
- the compensation spring can be designed sufficiently strong, so that always takes place for waste or lack of pressure an adjustment in the direction of the end position.
- the drag torques in the internal combustion engine can become so great that a safe adjustment in the end position by the compensation spring alone is not or not always guaranteed.
- the compensation spring will then operate under normal engine operating conditions. Very good, while under extreme conditions (eg., Engine stall, cold start), the compensation spring acts only supportive.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005060829A DE102005060829A1 (de) | 2005-12-20 | 2005-12-20 | Nockenwellenversteller mit einer Verriegelungseinrichtung |
PCT/EP2006/069026 WO2007071528A1 (de) | 2005-12-20 | 2006-11-29 | Nockenwellenversteller mit einer verriegelungseinrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1966465A1 true EP1966465A1 (de) | 2008-09-10 |
EP1966465B1 EP1966465B1 (de) | 2011-05-18 |
Family
ID=37716226
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06830175A Active EP1966465B1 (de) | 2005-12-20 | 2006-11-29 | Nockenwellenversteller mit einer verriegelungseinrichtung |
Country Status (8)
Country | Link |
---|---|
US (1) | US7934479B2 (de) |
EP (1) | EP1966465B1 (de) |
JP (1) | JP5147718B2 (de) |
KR (1) | KR101336467B1 (de) |
CN (1) | CN101341314B (de) |
AT (1) | ATE510111T1 (de) |
DE (1) | DE102005060829A1 (de) |
WO (1) | WO2007071528A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5763432B2 (ja) * | 2011-06-17 | 2015-08-12 | 日立オートモティブシステムズ株式会社 | 内燃機関のバルブタイミング制御装置 |
DE102012209027B4 (de) | 2012-05-30 | 2017-06-22 | Schaeffler Technologies AG & Co. KG | Nockenwellenversteller |
US9121358B2 (en) | 2013-02-22 | 2015-09-01 | Borgwarner Inc. | Using camshaft timing device with hydraulic lock in an intermediate position for vehicle restarts |
US8893677B2 (en) | 2013-03-14 | 2014-11-25 | Borgwarner Inc. | Dual lock pin phaser |
WO2014204650A1 (en) | 2013-06-19 | 2014-12-24 | Borgwarner Inc. | Variable camshaft timing mechanism with a lock pin engaged by oil pressure |
JP6221694B2 (ja) * | 2013-11-29 | 2017-11-01 | アイシン精機株式会社 | 弁開閉時期制御装置 |
CN109209548B (zh) | 2017-06-30 | 2022-01-25 | 博格华纳公司 | 具有两个锁定位置的可变凸轮轴正时装置 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2302391B (en) | 1995-06-14 | 1999-08-18 | Nippon Denso Co | Control apparatus for varying the rotational or angular phase between two rotational shafts |
JP3075337B2 (ja) * | 1995-06-14 | 2000-08-14 | 株式会社デンソー | 内燃機関用バルブタイミング調整装置 |
JP3164007B2 (ja) * | 1997-02-14 | 2001-05-08 | トヨタ自動車株式会社 | 内燃機関のバルブタイミング調整装置 |
JP3918971B2 (ja) * | 1998-04-27 | 2007-05-23 | アイシン精機株式会社 | 弁開閉時期制御装置 |
DE19961192A1 (de) * | 1999-12-18 | 2001-06-28 | Schaeffler Waelzlager Ohg | Rotationskolbenversteller |
JP4389383B2 (ja) * | 1999-12-24 | 2009-12-24 | アイシン精機株式会社 | 弁開閉時期制御装置 |
DE10064222B4 (de) | 1999-12-24 | 2006-02-09 | Aisin Seiki K.K., Kariya | Verstellbares Ventilsteuersystem |
WO2001055562A1 (fr) * | 2000-01-25 | 2001-08-02 | Mitsubishi Denki Kabushiki Kaisha | Dispositif de reglage du calage de distribution |
JP2002122009A (ja) * | 2000-08-09 | 2002-04-26 | Mitsubishi Electric Corp | バルブタイミング調整装置 |
JP4465846B2 (ja) | 2000-09-27 | 2010-05-26 | アイシン精機株式会社 | 弁開閉時期制御装置 |
DE10253496B4 (de) * | 2001-11-21 | 2017-03-16 | Schaeffler Technologies AG & Co. KG | Verfahren zum Betreiben eines hydraulischen Nockenwellenversteller s |
DE10211607A1 (de) * | 2002-03-12 | 2003-10-09 | Porsche Ag | Antrieb für Ventiltriebsteuerungen von Fahrzeugen, vorzugsweise von Nockenwellenverstellern |
JP2003320356A (ja) * | 2002-05-01 | 2003-11-11 | Babcock Hitachi Kk | 有機性廃棄物の処理方法及び装置 |
JP2004116410A (ja) * | 2002-09-26 | 2004-04-15 | Aisin Seiki Co Ltd | 弁開閉時期制御装置 |
US7387097B2 (en) * | 2004-10-08 | 2008-06-17 | Ina-Schaeffler Jg | INA-schaeffler KG, industriestrasse 1-3, 91074 herzogenaurach ANR 12 88 48 20 |
US7261072B2 (en) * | 2004-10-08 | 2007-08-28 | Schaeffler Kg | Device for altering the control times of gas exchange valves of an internal combustion engine |
-
2005
- 2005-12-20 DE DE102005060829A patent/DE102005060829A1/de not_active Withdrawn
-
2006
- 2006-11-29 WO PCT/EP2006/069026 patent/WO2007071528A1/de active Application Filing
- 2006-11-29 CN CN2006800482883A patent/CN101341314B/zh active Active
- 2006-11-29 US US12/097,795 patent/US7934479B2/en active Active
- 2006-11-29 AT AT06830175T patent/ATE510111T1/de active
- 2006-11-29 KR KR1020087014801A patent/KR101336467B1/ko active IP Right Grant
- 2006-11-29 JP JP2008546334A patent/JP5147718B2/ja not_active Expired - Fee Related
- 2006-11-29 EP EP06830175A patent/EP1966465B1/de active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2007071528A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP5147718B2 (ja) | 2013-02-20 |
KR20080079654A (ko) | 2008-09-01 |
ATE510111T1 (de) | 2011-06-15 |
KR101336467B1 (ko) | 2013-12-04 |
WO2007071528A1 (de) | 2007-06-28 |
CN101341314A (zh) | 2009-01-07 |
CN101341314B (zh) | 2012-12-26 |
US20080289595A1 (en) | 2008-11-27 |
US7934479B2 (en) | 2011-05-03 |
JP2009520150A (ja) | 2009-05-21 |
DE102005060829A1 (de) | 2007-07-05 |
EP1966465B1 (de) | 2011-05-18 |
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