EP1339953A1 - Vorrichtung zur relativen drehwinkelverstellung einer nockenwelle einer brennkraftmaschine zu einem antriebsrad - Google Patents
Vorrichtung zur relativen drehwinkelverstellung einer nockenwelle einer brennkraftmaschine zu einem antriebsradInfo
- Publication number
- EP1339953A1 EP1339953A1 EP01997625A EP01997625A EP1339953A1 EP 1339953 A1 EP1339953 A1 EP 1339953A1 EP 01997625 A EP01997625 A EP 01997625A EP 01997625 A EP01997625 A EP 01997625A EP 1339953 A1 EP1339953 A1 EP 1339953A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- webs
- camshaft
- blades
- cellular wheel
- recesses
- 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
- F01L1/34—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
- F01L2001/34479—Sealing of phaser devices
Definitions
- the invention relates to a device for the relative rotation angle adjustment of a camshaft of an internal combustion engine to a drive wheel according to the preamble of the main claim.
- sealing elements are arranged on the end faces of the rotor blades of the camshaft adjuster in a fifth exemplary embodiment (see FIGS. 15 to 18). These sealing elements, which are not described in any more detail, are intended to prevent the hydraulic oil used to adjust the rotor relative to the stator from passing from the pressure chambers charged with hydraulic oil via the end face of the rotor blades to the currently unpressurized adjustment chambers.
- vane cell camshaft adjuster in which recesses are provided on the end faces of the rotor blades, in which roller-shaped rolling elements are accommodated. These rolling elements serve to reduce the frictional forces between the drive wheel and the impeller (rotor), the rolling elements being supported on one side directly in the recess and on the other side directly on the inner wall of the drive wheel.
- recesses are also provided on the end faces of the rotor blades, in which rectangular sealing bodies are arranged.
- hydraulic oil is conveyed into the recesses via a leakage gap formed between the rotor blades and the stator (drive wheel); the rectangular sealing bodies are thus pressed against the stator with a first side surface and against the inner flank of the sealing groove with a second side surface (see, for example, FIG. 7).
- the rollers provided as sealing bodies in the recesses of the rotor blades ensure a line contact both on the stator (drive wheel) and on the inner surface of the sealing groove, which has a greater contact pressure than a surface contact (see DE 199 22 194 AI) and thus a more reliable sealing of the two of the rotor blades ensure separate pressure chambers.
- the friction compared to the rectangular sealing elements is significantly lower.
- Fig. 2 shows a section along the line II-ll in Fig. 1 and
- Fig. 3 shows an enlarged section of a rotor blade.
- the camshaft of an internal combustion engine is schematically indicated at 2, at the free end of which an inner part, hereinafter referred to as rotor 4, of an adjusting unit 5 is arranged.
- the rotor 4 is provided with five radially arranged vanes 6a to 6e, which start from a hub 8 of the rotor 4.
- the rotor 4 is surrounded in the area of its blades 6a to 6e by a cellular wheel 10, which is provided with five inwardly projecting radial webs 12a to 12e.
- the cell wheel 10 forming the stator of the adjusting unit 5 is closed on its end face facing the camshaft 2 by a chain wheel 14 which is rotatably and sealingly guided on the hub 8 of the rotor 4.
- the sprocket 14 serves as a drive for the camshaft 2, which takes place, for example, via a drive chain connected to the crankshaft.
- the opposite end face of the cellular wheel 10 is closed by a disk 16, the chain wheel 14 and the disk 16 being firmly connected to the cellular wheel 10 by means of fastening screws 18.
- the through holes 20 provided in the webs 12a to 12e in the cellular wheel 10 serve to receive or guide these fastening screws 18.
- a signal transmitter disk 30 is attached to the outside of the rotor 4, with the aid of which the rotational position of the camshaft 2 relative to the crankshaft can be detected.
- the five axial bores 32a to 32e arranged in the hub 8 of the rotor 4 represent part of the oil supply channels for the pressure spaces 24a to 24e.
- the pressure spaces 22a to 22e are also supplied with hydraulic oil via radial bores (not shown) arranged in the hub ,
- the hydraulic oil supply for the two pressure chambers 22a to 22e and 24a to 24e takes place via a camshaft bearing 34 the corresponding control lines for the oil pressure supply of the adjustment unit 5 are connected.
- the way in which the oil is supplied to the pressure chambers 22a to 22e or 24a to 24e is, for. B. from DE 199 30 711 Cl known, so that the more precise design of the oil supply channels to the pressure chambers is not discussed further.
- Groove-shaped recesses 38 are provided on the free end face 36 of each wing 6a to 6e, in which a sealing body 40 designed as metallic rollers is accommodated.
- the rollers 40 are provided with a diameter of 3 mm (-0.006 / -0.002) and the groove-shaped recesses 38 are provided with 3 mm H7 (0 / + 0.0D clearance fit.
- a gap a is formed in the range from 0.01 to 0.1 mm and the inner wall 42 of the cellular wheel 10.
- the rotor 4 is adjusted in the desired manner in the counterclockwise direction, due to the fact that the gap a is formed between the free end face 36 of the vanes 6a to 6e and the inner wall 42 of the cellular wheel 10, a quantity of leakage oil reaches the groove-shaped recesses via the gap a 38.
- the pressure chambers 22a to 22e are pressurized with oil.
- the end faces 36 are sealed off from the inner wall 42 of the cellular wheel 10 in Analogously: the sealing bodies 40 form a line contact LK1 ' with the inner wall 42 and a line contact LK2 ' with the side walls 44 'of the groove-shaped recesses 38, so that it is also ensured here during the adjustment process that the hydraulic oil located in the pressure chambers 22a to 22e cannot get into the pressure chambers 24a to 24e via the gap a.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10058707 | 2000-11-25 | ||
DE10058707A DE10058707C2 (de) | 2000-11-25 | 2000-11-25 | Vorrichtung zur relativen Drehwinkelverstellung einer Nockenwelle einer Brennkraftmaschine zu einem Antriebsrad |
PCT/EP2001/012802 WO2002042614A1 (de) | 2000-11-25 | 2001-11-06 | Vorrichtung zur relativen drehwinkelverstellung einer nockenwelle einer brennkraftmaschine zu einem antriebsrad |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1339953A1 true EP1339953A1 (de) | 2003-09-03 |
EP1339953B1 EP1339953B1 (de) | 2006-09-06 |
Family
ID=7664742
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01997625A Expired - Lifetime EP1339953B1 (de) | 2000-11-25 | 2001-11-06 | Vorrichtung zur relativen drehwinkelverstellung einer nockenwelle einer brennkraftmaschine zu einem antriebsrad |
Country Status (5)
Country | Link |
---|---|
US (1) | US6679208B2 (de) |
EP (1) | EP1339953B1 (de) |
JP (1) | JP2004514819A (de) |
DE (2) | DE10058707C2 (de) |
WO (1) | WO2002042614A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8215292B2 (en) * | 1996-07-17 | 2012-07-10 | Bryant Clyde C | Internal combustion engine and working cycle |
JP2004143971A (ja) * | 2002-10-22 | 2004-05-20 | Aisin Seiki Co Ltd | 弁開閉時期制御装置 |
DE102005038364A1 (de) * | 2005-08-13 | 2007-02-15 | Schaeffler Kg | Vorrichtung zur variablen Einstellung der Steuerzeiten von Gaswechselventilen einer Brennkraftmaschine |
DE102006019607B4 (de) * | 2006-04-25 | 2008-01-31 | Hydraulik-Ring Gmbh | Nockenwellenversteller |
ES2834096T3 (es) * | 2011-04-04 | 2021-06-16 | Columbia Power Tech Inc | Conjunto mecánico para mantener un espacio de aire entre un estator y rotor en un convertidor de energía electromecánico |
DE102014208598B4 (de) | 2014-05-08 | 2020-10-29 | Schaeffler Technologies AG & Co. KG | Nockenwellenversteller mit zum Erreichen eines hydraulischen Freilaufs hin- und herschaltbarem Hydraulikkammerabdichtelement |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4237193A1 (de) * | 1992-11-04 | 1994-05-05 | Bosch Gmbh Robert | Verfahren zur Ansteuerung einer Einrichtung zum relativen Verdrehen einer Welle und Einrichtung zum relativen Verdrehen der Welle einer Brennkraftmaschine |
GB2302391B (en) * | 1995-06-14 | 1999-08-18 | Nippon Denso Co | Control apparatus for varying the rotational or angular phase between two rotational shafts |
DE19740215B4 (de) * | 1996-09-13 | 2006-02-09 | Denso Corp., Kariya | Drehphaseneinstellvorrichtung mit einer Kunstharzdichtung |
DE19745908B4 (de) * | 1997-10-17 | 2004-03-04 | Ina-Schaeffler Kg | Vorrichtung zum Verändern der Steuerzeiten von Gaswechselventilen einer Brennkraftmaschine, wobei die Vorrichtung als Flügelzellen-Verstelleinrichtung ausgebildet ist |
JPH11141313A (ja) * | 1997-11-07 | 1999-05-25 | Toyota Motor Corp | 内燃機関のバルブタイミング変更装置 |
JP3174297B2 (ja) * | 1998-12-07 | 2001-06-11 | 三菱電機株式会社 | ベーン式油圧アクチュエータ |
DE19930711C1 (de) | 1999-07-02 | 2000-08-24 | Porsche Ag | Vorrichtung zur relativen Drehwinkeländerung der Nockenwelle einer Brennkraftmaschine zu einem Antriebsrad |
DE19951391A1 (de) * | 1999-10-26 | 2001-07-05 | Schaeffler Waelzlager Ohg | Vorrichtung zum Verändern der Steuerzeiten von Gaswechselventilen einer Brennkraftmaschine, insbesondere hydraulische Nockenwellen-Verstelleinrichtung in Rotationsrichtung |
DE10020120A1 (de) | 2000-04-22 | 2001-10-25 | Schaeffler Waelzlager Ohg | Vorrichtung zum Verändern der Steuerzeiten von Gaswechselventilen einer Brennkraftmaschine, insbesondere hydraulische Nockenwellen-Verstelleinrichtung in Rotationskolbenbauart |
-
2000
- 2000-11-25 DE DE10058707A patent/DE10058707C2/de not_active Expired - Fee Related
-
2001
- 2001-11-06 DE DE50110959T patent/DE50110959D1/de not_active Expired - Lifetime
- 2001-11-06 US US10/221,949 patent/US6679208B2/en not_active Expired - Lifetime
- 2001-11-06 EP EP01997625A patent/EP1339953B1/de not_active Expired - Lifetime
- 2001-11-06 WO PCT/EP2001/012802 patent/WO2002042614A1/de active IP Right Grant
- 2001-11-06 JP JP2002544519A patent/JP2004514819A/ja active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO0242614A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP1339953B1 (de) | 2006-09-06 |
DE50110959D1 (de) | 2006-10-19 |
WO2002042614A1 (de) | 2002-05-30 |
JP2004514819A (ja) | 2004-05-20 |
US20030127065A1 (en) | 2003-07-10 |
DE10058707C2 (de) | 2003-10-16 |
DE10058707A1 (de) | 2002-06-13 |
US6679208B2 (en) | 2004-01-20 |
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