EP3365537A1 - Kulissenabschnitt für ein nockenstück eines ventiltriebs - Google Patents
Kulissenabschnitt für ein nockenstück eines ventiltriebsInfo
- Publication number
- EP3365537A1 EP3365537A1 EP16785341.5A EP16785341A EP3365537A1 EP 3365537 A1 EP3365537 A1 EP 3365537A1 EP 16785341 A EP16785341 A EP 16785341A EP 3365537 A1 EP3365537 A1 EP 3365537A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cam piece
- sliding
- sliding grooves
- grooves
- designed
- 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
- 238000006073 displacement reaction Methods 0.000 claims abstract description 19
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 208000028804 PERCHING syndrome Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 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
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
- F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
-
- 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
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
- F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
- F01L2013/0052—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction with cams provided on an axially slidable sleeve
Definitions
- the invention relates to a gate section for a cam piece of a valvetrain, comprising a cylindrical body, on the outer circumference of which two thread-like sliding grooves are configured, each serving to enclose at least one Aktuatorrochs a cam piece associated Stellaktuators for corresponding axial displacement of the Nockenstöeks to a base, said Move sliding in opposite directions to each other and are brought together in a common outlet area. Furthermore, the invention relates to a valve train for an internal combustion engine, in which an aforementioned gate section is used.
- a gate section for a cam piece of a valve train is apparent, in which the cam piece rotatably and axially displaceable on a basic shaft is arranged and which is designed accordingly as a valve sash vent.
- the gate section of the Nöckenstucks comprises an integral, cylindrical body, on whose outer circumference two thread-like extending displacer are configured.
- the displacement grooves are each provided for representing a corresponding axial displacement of the cam piece to the base of the base by the cam piece is assigned a Steliaktuator whose ⁇ ktuatorstäft in a respective; bordering the current position of the cam piece on the basis of two in one of the tilt grooves and may cause a further shift of Nockenstöeks to another position on the fundamental shaft.
- the displacement grooves run in opposite directions to each other and cause accordingly speaking in conjunction with the ⁇ ktuatorsisft also oppositely oriented displacements of the cam piece to the fundamental, wherein the Verschiebe- grooves are brought together in a common Auslaui Symposium.
- the displacement grooves extend from their groove depth back to an outer diameter of the body so that the actuator pin is pushed out of the respective displacement groove at the end of the displacement of the cam piece on the base shaft.
- a Kuiissenabites comprises a cylindrical body, on the outer circumference of which two thread-like sliding grooves are designed, each serving the inclusion of at least one Aktuatorstlffs the No- Gken Sharing associated Stellaktuators for corresponding axial displacement of the cam piece to a Grundwelie.
- the displacement grooves run in opposite directions to each other and are combined in a common outlet area
- An inventive Kuiissenabites ast within a valve train of an internal combustion engine then part of at least one cam piece, which is rotatably and axially displaceably guided on a base width and next Kuiissenabites comprises at least one Nockenabsehnift.
- the cam piece is preferably provided at a through hole with an inner profile, with which it is placed on a corresponding outer profile of the Grundwelte.
- the two profiles are designed as corresponding receiving profiles, such as, for example, as a multiple count.
- the gewse on the backdrop section, d. h, helically designed, sliding grooves serve to surround at least one ⁇ ktuator Jerusalems a cam piece associated Sieliaktuators for targeted Axialverschiebuhg the Nockensiücks to the fundamental wave.
- the valve drive is aiso basically designed in the manner of a sliding cam valve drive, in which at least one cam piece is rotatably and axially displaceably placed on a basic shaft, in order to carry out a respective actuation of at least one associated gas exchange valve, each with a plurality of differently shaped single cams, in different axial directions.
- This EsnzeSnocken are ah the at least one Nockenabsohn itt the cam piece axially
- a transmission element may be a fog-type cam follower, such as a towing or rocker arm, or else a deadbolt.
- the common surface of the sliding grooves has a constant groove depth.
- the common surface of the sliding grooves does not return to an outside diameter of the body of the slide section, but essentially remains on and The same groove depth, this groove depth can correspond to a groove depth of the two Verschiebenufen or slightly deviate from this.
- Such a configuration of a sliding section for a cam piece of a Veniiitriebes has the advantage that the gate section can be manufactured with low Herst! - Sungsetzwand, since the common ⁇ uslaufbeFich the two sliding grooves must not be made with varying groove depth to a leakage on the outer diameter of the To realize the body of the scenery section. Because a Ausiauf Society with variable groove depth must usually be made in the context of a milling process, which is elaborate. In contrast, a discharge area with a constant groove depth can also be produced with other, simpler production methods.
- the common outlet region of the two displacement grooves is designed with a variable groove depth, in that the release region realizes a transition from another groove depth of the displacement grooves to an outer diameter of the cylindrical body of the slide portion. This in the circumferential direction changing depth of the outlet area must be made consuming, which increases the Hersteliungsaufwand accordingly.
- each individual part can also define parts of the displacement grooves, So for example, each one of the groove walls of the convergent sliding grooves.
- the sliding grooves are produced as milled grooves.
- milling the thread-like courses of the sliding grooves can be easily manufactured, the Ausiaufbereseh but then either separately or in the same baybeitsgang with the same depth is produced.
- the body is designed as a sheet metal forming part.
- the manufacturing effort can be further reduced, wherein the cylindrical body of the sliding section thereby from a flanged bending cylinder or can also be realized from two mirror-symmetrical drawn parts, in the latter case a groove wall of the sliding groove is preferably configured on each of the individual parts, so that the sliding grooves with the common outlet area result in the course of the joining of the two individual parts to the Kufissen section.
- the parts can be made from a 2 mm deep-drawn sheet, the deep drawing is then carried out in the form of wells.
- a corresponding profile * such as the provision of an axially projecting tab on the part of a component, which encloses part of the other component in a corresponding franking.
- the discharge region is configured as a circumferential recess on the body.
- This makes it possible to produce the discharge region on the body in a particularly simple manner by manufacturing it as part of a cost-effective rotary operation. Furthermore, this achieves the result that an actuator pin of the pinion actuator not rueeküber discourset in a basic position can not collide with a circumferential end of the outlet area, since the actuator pin can remain extended from running in the outlet area over a complete revolution of the gate section.
- the sliding grooves have inlet regions which each lead from an outer end diameter of the body to a groove depth of the sliding grooves.
- the sliding grooves are therefore provided with single-acting areas, which lead from an outside diameter of the body to the respective groove depth of the sliding grooves. This allows a corresponding
- actuator pin can be realized in the sliding grooves.
- Figure 1 is a schematic view of a portion of a valve train according to a first ⁇ usClouduhgsform the invention
- Figure 2 is a further schematic view of the ice of the valve gate of Figure 1;
- Fig ur 3 a schernatisohe representation of a portion of a valve train according to egg ner second Ausgesiattungsnnenschwkeit the invention.
- FIG. 4 shows a partial aspect of the illustration from FIG. 3,
- Figure 1 shows a perspective view of a Teiis a valve train 1 for an internal combustion engine, wherein the valve train 1 in principle in the manner of a Expert known sliding cam valve drive is gestaitet.
- a cam piece 2 of the Ventiitechnisches 1 is shown, soft within the Ventiitechnisches 1 rotatably and axially displaceable on a - not shown here - fundamental wave is arranged.
- the cam piece 2 is provided on a through hole 3 with an inner profile 4, over which the non-rotatable and axially displaceable coupling is made with the ground where the GrundwelSe is equipped for this purpose with a discoursepröfii designed for this purpose.
- the cam stile 2 essentially comprises two cam spacers 5 and 6 arranged axially spaced apart from one another, each consisting of two individual cams 7 and 8 or 9 and 10, and a cam portion 11.
- the cam cuttings 5 and 6 accompany the cams depending on one of their single cams 7 or 8 or 9 or 10, each with an associated ⁇ presently not wester shown - transmission element in contact, which a respective cam lobe of each Absufenden Eihzelno- ckens 7 or 8, 9 or 10 in Entsjsrechende opening and closing movements at least one associated Gaswechseiventiis the Ventiitriebes 1
- the gate section 11 is equipped with a single-storey, cylindrical body 12, at whose. Outer circumference two sliding grooves 13 and 14 are configured. This sliding grooves 13 and 14 have a thread-like course and run in opposite directions to each other toward an axial center of the body 1.2, where the seeds are brought together in a common ⁇ usSetzbereieh 15.
- Each Versehie- 13 and 14 each have an inlet region 16 and 17, respectively, via which in each case a transition from an outer diameter of the body 12 to the actual groove depth of the respective gene sliding groove 13 and, 14 is realized, as in particular from the further view in Figure 2 ' visible Is.
- the common outlet region 15 of the displacement grooves 13 and 14 is designed with a constant groove depth, this groove depth substantially corresponding to the groove depths of the displacement grooves 13 and 14 following the inlet regions 16 and 17.
- the ⁇ usSaufbereieh 15 is designed as a running around the puncture on the body 12, which was made in the context of prehoperation, the other parts of the sliding grooves 13 and 14 are hergesteilt mowing, in particular the inlet areas if and 17 to make accordingly.
- the one-piece body 12 of the gate section 11 also prevails as Blechumformtesl, namely as a flanged sheet metal cylinder.
- the Stellaktuaior associated with the NockenstüGk 2 is in the present case able to perform a return stroke of Aktuatörsfifts seibstfägig because the common outlet region 15 of the sliding grooves 13 and 14 is not equipped with a rising edge, which would otherwise provide for pushing back the Aktuatoruxs.
- Figure 3 shows a perspective view of a portion of a Ventiliriebes 18 according to a second Gestuemungsdorfkeit of the invention, wherein also here a cam piece 19 of the Ventiitechnisches 18 is shown;
- the Ventutrieb 18 substantially corresponds to the variant according to Figures 1 and 2, wherein in contrast to the previous variant, a body 20 of a link section 21 of the Noeken- piece 19 is not designed in one piece, but is composed of two individual parts 22 and 23.
- the items 22nd and 23 are realized as a mirror-symmetrical drawing parts, which were made in the context of Tiefzleh perspectivesen, especially cups.
- Each individual part 22 or 23 defines one groove wall each of two versehlebenuten 24 and 25, dle r as in the variant according to the figures 1 and 2, thread-like and opposite to each other running in a common Auslrawelelch 20 are merged.
- both one-piece parts 22 and 23 must be aligned with each other, the item 22 is provided with an axially protruding tab 27, seen in FIG. 4, with softer part of the item 23 encased in a corresponding franking 28.
- Both Einzelteiie 22 and 23 are doing as a cross press dressing on the rest Part of the mock piece 19 attached.
- the embodiment according to FIGS. 3 and 4 otherwise corresponds to the previous variant according to FIGS. 1 and 2, so that reference is made to the description described here.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015220602.5A DE102015220602A1 (de) | 2015-10-22 | 2015-10-22 | Kulissenabschnitt für ein Nockenstück eines Ventiltriebs |
| PCT/DE2016/200458 WO2017067549A1 (de) | 2015-10-22 | 2016-09-30 | Kulissenabschnitt für ein nockenstück eines ventiltriebs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3365537A1 true EP3365537A1 (de) | 2018-08-29 |
| EP3365537B1 EP3365537B1 (de) | 2019-11-06 |
Family
ID=57199863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16785341.5A Active EP3365537B1 (de) | 2015-10-22 | 2016-09-30 | Kulissenabschnitt für ein nockenstück eines ventiltriebs |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3365537B1 (de) |
| CN (1) | CN108350769A (de) |
| DE (1) | DE102015220602A1 (de) |
| WO (1) | WO2017067549A1 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017115462A1 (de) | 2017-07-11 | 2019-01-17 | Schaeffler Technologies AG & Co. KG | Nockenstück eines Ventiltriebs |
| DE102019107626A1 (de) | 2019-03-25 | 2020-10-01 | Thyssenkrupp Ag | Schiebenockensystem und Motor |
| DE102020210267A1 (de) | 2020-08-12 | 2022-02-17 | Thyssenkrupp Ag | Schiebenockenwellenanordnung für eine Brennkraftmaschine, sowie Verfahren zum Schalten einer Schiebenockenwellenanordnung für eine Brennkraftmaschine |
| DE102020210265A1 (de) | 2020-08-12 | 2022-02-17 | Thyssenkrupp Ag | Schiebenockensystem für eine Brennkraftmaschine mit integriertem Arretierelement |
| DE102020210259A1 (de) | 2020-08-12 | 2022-02-17 | Thyssenkrupp Ag | Schiebenockensystem |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007010149A1 (de) | 2007-03-02 | 2008-09-04 | Audi Ag | Ventiltrieb für Gaswechselventile einer Brennkraftmaschine mit verschiebbarem Nockenträger und Doppelschneckentrieb |
| DE102007054978B4 (de) * | 2007-11-17 | 2023-12-14 | Mercedes-Benz Group AG | Ventiltriebvorrichtung |
| DE102008060166A1 (de) * | 2008-11-27 | 2010-06-02 | Dr.Ing.H.C.F.Porsche Aktiengesellschaft | Ventiltrieb für Gaswechselventile einer Brennkraftmaschine |
| DE102008060167B4 (de) * | 2008-11-27 | 2021-05-27 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Ventiltrieb einer Brennkraftmaschine |
| JP5615828B2 (ja) * | 2009-10-06 | 2014-10-29 | ヤマハ発動機株式会社 | エンジンの動弁装置 |
| DE102010033087A1 (de) * | 2010-08-02 | 2012-02-02 | Schaeffler Technologies Gmbh & Co. Kg | Ventiltrieb einer Brennkraftmaschine |
| DE102010060766B4 (de) * | 2010-11-24 | 2023-06-07 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Schiebenockensystem zur Verwendung bei einem Ventiltrieb einer Brennkraftmaschine |
| DE102011056833B4 (de) * | 2011-12-21 | 2023-03-23 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Ventiltriebvorrichtung für eine Brennkraftmaschine |
| DE102013201827A1 (de) * | 2013-02-05 | 2014-08-07 | Schaeffler Technologies Gmbh & Co. Kg | Diagnoseverfahren eines Ventiltrieb-Aktuators |
| DE102013221244A1 (de) * | 2013-10-21 | 2015-04-23 | Volkswagen Aktiengesellschaft | Vorrichtung zur Nockenwellenverstellung einer Brennkraftmaschine |
-
2015
- 2015-10-22 DE DE102015220602.5A patent/DE102015220602A1/de not_active Withdrawn
-
2016
- 2016-09-30 CN CN201680061964.4A patent/CN108350769A/zh active Pending
- 2016-09-30 WO PCT/DE2016/200458 patent/WO2017067549A1/de not_active Ceased
- 2016-09-30 EP EP16785341.5A patent/EP3365537B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| EP3365537B1 (de) | 2019-11-06 |
| DE102015220602A1 (de) | 2017-04-27 |
| CN108350769A (zh) | 2018-07-31 |
| WO2017067549A1 (de) | 2017-04-27 |
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