EP1646769A1 - Vorrichtung zum verändern der steuerzeiten von gaswechselven tilen einer brennkraftmaschine, insbesondere rotationskolben-verstelleinrichtung zur drehwinkelverstellung einer nockenwelle gegenüber einer kurbelwelle - Google Patents
Vorrichtung zum verändern der steuerzeiten von gaswechselven tilen einer brennkraftmaschine, insbesondere rotationskolben-verstelleinrichtung zur drehwinkelverstellung einer nockenwelle gegenüber einer kurbelwelleInfo
- Publication number
- EP1646769A1 EP1646769A1 EP04734221A EP04734221A EP1646769A1 EP 1646769 A1 EP1646769 A1 EP 1646769A1 EP 04734221 A EP04734221 A EP 04734221A EP 04734221 A EP04734221 A EP 04734221A EP 1646769 A1 EP1646769 A1 EP 1646769A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- impeller
- coil spring
- compression coil
- hole
- hollow cylindrical
- 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 title claims description 21
- 230000006835 compression Effects 0.000 claims description 46
- 238000007906 compression Methods 0.000 claims description 46
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims 1
- 238000005553 drilling Methods 0.000 abstract 4
- 230000004323 axial length Effects 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000003466 welding Methods 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
- 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
Definitions
- a rotary piston adjusting device for adjusting the angle of rotation of a camshaft relative to a crankshaft
- the invention relates to a device for changing the timing of gas exchange valves of an internal combustion engine according to the precharacterizing features of claim 1, and it can be realized particularly advantageously on a rotary piston adjusting device for adjusting the angle of rotation of a camshaft relative to a crankshaft.
- the impeller has on the circumference of its wheel hub five vanes which extend radially into the working spaces and which divide the working spaces into two hydraulic pressure chambers which act against one another and which, when selectively or simultaneously pressurized with a hydraulic pressure medium, swivel or fix the impeller relative to the Drive wheel and thus the camshaft with respect to the crankshaft.
- the impeller can be mechanically coupled to the drive wheel by means of a separate locking element in a preferred base position within its adjustment range, in particular when the internal combustion engine is restarted until the required pressure medium pressure builds up to avoid the rattling of the impeller on the boundary walls of the drive wheel resulting from the alternating torques of the camshaft.
- This locking element which is designed as a cylindrical locking pin, can be displaced into a locking position within a receptacle in the side wall of the drive wheel facing away from the camshaft and is arranged together with the spring element in a through bore in the wheel hub of the impeller, which is parallel to the longitudinal center axis of the device, by means of a spring element designed as a compression coil spring.
- the locking pin has on its rear side an axial basic bore in which one end of the compression coil spring is fixed, while the other end of the compression coil spring is supported on a plastic counter-holder inserted into the through-hole with a centering tip, which in turn is in contact with the back through contact Side wall of the drive wheel is axially fixed.
- a disadvantage of this known device is that the locking mechanism used is only suitable for a certain width of the impeller due to the fixing of the counter-holder for the compression coil spring on a side wall of the drive wheel, if the compression coil spring always has the same defined spring force on the locking pin should work.
- the invention is therefore based on the object of designing a device for changing the control times of gas exchange valves of an internal combustion engine, in particular a rotary piston adjusting device for adjusting the angle of rotation of a camshaft relative to a crankshaft, the locking mechanism of which for avoiding frictional contact of the counter holder for the compression coil spring of the locking pin a side wall of the drive wheel without adjusting the length of this counter-holder ensures compliance with a defined spring force acting on the locking pin even when used in devices with different widths of the impeller.
- this object is achieved in a device according to the preamble of claim 1 in such a way that the counter-holder for the other End of the compression coil spring of the locking pin is designed as a hollow cylindrical cartridge which can be locked in any axial position within the through hole in the wheel hub of the impeller by force or positive locking.
- the counter-holder as a freely positionable cartridge thus makes it possible to always position the counter-holder in exactly the axial position within the through-hole in the one with the compression coil spring, regardless of the width of the impeller or regardless of the axial length of the through-hole in the impeller the desired defined spring force is achieved on the locking pin.
- the hollow cylindrical cartridge is designed as a stamped and drawn part made of sheet steel, which has a plate-shaped axial recess in its bottom end face for fixing the other end of the compression coil spring.
- the diameter of this axial depression corresponds approximately to the outer diameter of the spring turns of the compression coil spring and the depth of the axial depression is preferably designed such that somewhat two spring turns of the compression coil spring are supported radially in the axial depression.
- the cartridge has a ventilation bore opening into the longitudinal cavity of the cartridge, through which the hydraulic pressure medium accumulating behind the locking pin in the through bore in the impeller is discharged to a further ventilation bore in the adjacent side wall of the drive wheel.
- An alternative development of the device designed according to the invention is also to design the hollow cylindrical cartridge with a peg-shaped axial extension for fixing the other end of the compression coil spring to its bottom end face.
- the diameter of this axial extension corresponds approximately to the inside diameter of the spring turns of the compression coil spring and the length of the axial extension is in turn designed such that approximately two spring turns of the compression coil spring are supported radially on the axial extension.
- a cartridge designed in this way can also be produced as a stamped and drawn part from a sheet steel and has no cutting as well as the first-mentioned embodiment, axially in the axial extension, a vent hole opening into the cavity of the cartridge for discharging the hydraulic pressure medium accumulating behind the locking pin in the through hole.
- Such a first embodiment for locking the hollow cylindrical cartridge in the through bore is, for example, to design the cartridge on its outer surface with a slightly larger diameter than the through bore in the wheel hub of the impeller and to fix it in a force-fitting manner by press fit in this through bore.
- the cartridge is pressed into the through bore from the camshaft-side bore opening until it reaches the position in the through bore defined by an auxiliary stop, which is inserted into the through bore, in which the compression coil spring exerts the desired defined spring force on the locking pin.
- Another possible form of implementation to press-fit the cartridge into the through hole in the wheel hub of the impeller would also be to design the cartridge in the manner of a dowel pin with a longitudinal axial slot in its lateral surface and without a bottom, and to design the cartridge designed in this way Press the slot together into the through hole.
- the other end of the compression coil spring is designed such that its first spring turn is supported on the then annular bottom surface before this cartridge.
- the hollow cylindrical cartridge has a slight to form a smaller diameter than the through hole in the wheel hub of the impeller and to fix it positively by engaging its end edge on a circlip inserted in a circumferential groove in the through hole in the through hole.
- the position of the cartridge in the through bore, in which the compression coil spring exerts the desired defined spring force on the locking pin is determined by taking into account the axial length of the cartridge by the circumferential groove in the through bore.
- a third embodiment of the locking of the hollow cylindrical cartridge in the through bore is to design the hollow cylindrical cartridge also with a slightly smaller diameter than the through bore in the wheel hub of the impeller and with several open axial slots in its outer surface and an end edge that is angled outwards with which the cartridge is positively attached by clipping its end edge into a circumferential groove in the through hole in the same.
- the cartridge designed in this way like that in accordance with the second embodiment, is inserted into the through-bore from the bore opening remote from the camshaft, the axial slots in the outer surface of the cartridge allowing the angled end edge to deflect into the through-bore.
- the position of the cartridge in the through hole, in which the compression coil spring exerts the desired defined spring force on the locking pin is also determined in this embodiment by the positioning of the circumferential groove in the through hole, taking into account the axial length of the cartridge.
- the device designed according to the invention for changing the control times of gas exchange valves of an internal combustion engine in particular a rotary piston adjusting device for adjusting the angle of rotation of a camshaft relative to a crankshaft, thus has the advantage over the devices known from the prior art that their locking mechanism is formed by forming the counterhold of the Compression coil spring of the locking pin as a hollow cylindrical cartridge, which is fastened in the through hole in the wheel hub of the impeller by a force or form fit, can now be used in any device with different widths of the impeller without any adjustment work, and at the same time compliance with a defined, on the locking pin acting spring force guaranteed.
- Figure 1 shows a longitudinal section through a device designed according to the invention
- Figure 2 is an enlarged view of the detail Z of Figure 1 with a first embodiment of the fixation of the compression coil spring of the locking pin on its counter support and a first embodiment of the fixation of the counter holder in the through hole in the wheel hub of the impeller;
- Figure 3 is an enlarged view of the detail Z of Figure 1 with a second embodiment of the fixing of the compression coil spring of the locking pin on its counter holder and the first embodiment of the fixing of the counter holder in the through hole in the wheel hub of the impeller;
- Figure 4 is an enlarged view of the detail Z of Figure 1 with the second embodiment of the fixing of the compression coil spring of the locking pin on its counter-holder and a second embodiment of the fixing of the counter-holder in the through hole in the wheel hub of the impeller;
- FIG. 5 shows an enlarged view of the detail Z according to FIG. 1 with the second embodiment of fixing the compression coil spring of the locking pin to its counter-holder and a third embodiment of fixing the counter-holder in the through hole in the wheel hub of the impeller.
- this device 1 clearly shows a device 1 for changing the control times of gas exchange valves of an internal combustion engine, which is designed specifically as a rotary piston adjusting device for adjusting the angle of rotation of a camshaft relative to a crankshaft and is fastened to the drive-side end of a camshaft, not shown, mounted in the cylinder head of the internal combustion engine is.
- this device 1 is designed as a hydraulic actuator which can be controlled as a function of various operating parameters of the internal combustion engine and essentially consists of a drive wheel 2 which is in drive connection with the crankshaft of the internal combustion engine and an impeller 3 which is non-rotatably connected to the camshaft of the internal combustion engine has, as can also be seen from FIG.
- the impeller 3 on the circumference of its wheel hub 8 has the same number of vanes 9 which extend radially into a working space of the drive wheel and which divide the working spaces into two hydraulic pressure chambers 10, 11 which act against one another and which, when selectively or simultaneously pressurized with a hydraulic pressure medium cause a pivoting movement or fixation of the impeller 3 with respect to the drive wheel 2 and thus the camshaft with respect to the crankshaft.
- FIG. 1 it can be seen in FIG.
- the device 1 has a separate locking element with which the impeller 3 can be mechanically coupled to the drive wheel 2 in a preferred base position within its adjustment range when the pressure of the pressure medium required for adjustment is undershot.
- This locking element is clearly visible as a cylindrical locking pin 12 which can be moved by a spring element into a locking position within a receptacle 13 in the side wall 5 of the drive wheel 2.
- the spring element is designed as a compression coil spring 14, which together with the locking pin 12 in a through hole parallel to the longitudinal central axis of the device 1 15 is arranged in the wheel hub 8 of the impeller and one end 17 of which can be fixed in an axial basic bore 16 on the rear side of the locking pin 12.
- the other end 18 of the compression coil spring 14 for the locking pin 12 is supported on a counter-holder which is arranged in the through-bore 15 and is also clearly visible in FIG. 1 and which according to the invention as a force or form fit in any axial position within the through-bore 15 in the wheel hub 8 of the impeller 3 lockable hollow cylindrical cartridge 19 is formed.
- the hollow cylindrical cartridge 19 is designed as a stamped and drawn part made of sheet steel, which has a plate-shaped axial recess 21 in its bottom end face 20 for fixing the other end 18 of the compression coil spring 14 , whose diameter corresponds to the outside diameter of the spring windings 22 of the compression coil spring 14.
- the hollow cylindrical cartridge 19 can also be designed as a stamped and drawn part made of sheet steel, which, in order to fix the other end 18 of the compression coil spring 14 to its bottom end face 20, has a peg-shaped axial extension 23 whose diameter corresponds to the inside diameter of the spring windings 22 corresponds to the compression coil spring 14.
- FIG. 2 and FIG. 3 also show a first embodiment of the fixing of the counter-holder in the through bore 15 in the wheel hub 8 of the impeller 3, which consists in the hollow cylindrical cartridge 19 having a slightly larger diameter on its outer surface 24. knife than the through hole 15 in the wheel hub 8 of the impeller 3 and is non-positively fixed by press fit in this through hole 15.
- the second embodiment of fixing the counter-holder in the through-bore 15 in FIG. 4 differs in that the hollow cylindrical cartridge 19 has a slightly smaller surface area 24 ′ Diameter than the through hole 15 in the wheel hub 8 of the impeller 3 and is positively attached by abutment of its end edge 25 to a snap ring 27 inserted into a circumferential groove 26 in the through hole 15 in the through hole 15.
- a likewise form-fitting fixation of the counter-holder in the through hole 15 is finally shown alternatively as a third embodiment in FIG. 5.
- the hollow cylindrical cartridge 19 formed on its lateral surface 24 " likewise with a slightly smaller diameter than the through bore 15 in the wheel hub 8 of the impeller 3, has a plurality of open axial slots 28 in its lateral surface 24" as well as an outwardly angled end edge 25 'on, with which the cartridge 19 is fastened by clipping its end edge 25' into a circumferential groove 29 in the through hole 15 in the same.
- Boundary wall 23 axial extension
- Wheel hub 24 outer surface
- Compression coil spring 27 snap ring
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 (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003132881 DE10332881A1 (de) | 2003-07-19 | 2003-07-19 | Vorrichtung zum Verändern der Steuerzeiten von Gaswechselventilen einer Brennkraftmaschine, insbesondere Rotationskolben-Verstelleinrichtung zur Drehwinkelverstellung einer Nockenwelle gegenüber einer Kurbelwelle |
PCT/EP2004/005447 WO2005019611A1 (de) | 2003-07-19 | 2004-05-21 | Vorrichtung zum verändern der steuerzeiten von gaswechselventilen einer brennkraftmaschine, insbesondere rotationskolben-verstelleinrichtung zur drehwinkelverstellung einer nockenwelle gegenüber einer kurbelwelle |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1646769A1 true EP1646769A1 (de) | 2006-04-19 |
EP1646769B1 EP1646769B1 (de) | 2010-08-18 |
Family
ID=34041963
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04734221A Expired - Fee Related EP1646769B1 (de) | 2003-07-19 | 2004-05-21 | Vorrichtung zum verändern der steuerzeiten von gaswechselven tilen einer brennkraftmaschine, insbesondere rotationskolben-verstelleinrichtung zur drehwinkelverstellung einer nockenwelle gegenüber einer kurbelwelle |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1646769B1 (de) |
DE (2) | DE10332881A1 (de) |
WO (1) | WO2005019611A1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005024242B4 (de) * | 2005-05-23 | 2017-08-24 | Schaeffler Technologies AG & Co. KG | Vorrichtung zur variablen Einstellung der Steuerzeiten von Gaswechselventilen einer Brennkraftmaschine |
DE102007056549A1 (de) * | 2007-11-23 | 2009-05-28 | Schaeffler Kg | Gekröpftes Ketten- oder Riemenrad für modular aufgebauten Nockenwellenversteller |
DE102007056550A1 (de) | 2007-11-23 | 2009-05-28 | Schaeffler Kg | Modular aufgebauter Nockenwellenversteller mit Ketten- oder Riemenrad |
DE102013203955B4 (de) * | 2013-03-08 | 2018-05-30 | Schaeffler Technologies AG & Co. KG | Hydraulische Nockenwellenvorrichtung mit kugelabschnittsartiger Verriegelung |
DE102013203953B4 (de) * | 2013-03-08 | 2023-09-21 | Schaeffler Technologies AG & Co. KG | Aufnahmebuchse und diese aufnehmender hydraulischer Nockenwellenversteller zum Verriegeln eines Rotors an einem Stator |
DE102014205103B4 (de) * | 2014-03-19 | 2020-11-26 | Schaeffler Technologies AG & Co. KG | Nockenwellenversteller |
DE102017124917A1 (de) | 2017-10-25 | 2018-08-09 | Schaeffler Technologies AG & Co. KG | Patrone für einen hydraulischen Nockenwellenversteller |
CN113847113B (zh) * | 2020-06-28 | 2023-08-01 | 沈阳新松机器人自动化股份有限公司 | 一种汽车发动机自动正时角度调整设备 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3812689B2 (ja) * | 1996-12-12 | 2006-08-23 | アイシン精機株式会社 | 弁開閉時期制御装置 |
US5836277A (en) * | 1996-12-24 | 1998-11-17 | Aisin Seiki Kabushiki Kaisha | Valve timing control device |
JP3801747B2 (ja) * | 1997-09-29 | 2006-07-26 | アイシン精機株式会社 | 弁開閉時期制御装置 |
JP4147435B2 (ja) * | 1998-01-30 | 2008-09-10 | アイシン精機株式会社 | 弁開閉時期制御装置 |
JP4013364B2 (ja) * | 1998-10-30 | 2007-11-28 | アイシン精機株式会社 | 弁開閉時期制御装置 |
DE19860418B4 (de) * | 1998-12-28 | 2008-09-11 | Schaeffler Kg | Vorrichtung zum Verändern der Steuerzeiten von Gaswechselventilen einer Brennkraftmaschine, insbesondere Nockenwellen-Verstelleinrichtung mit Flügelrad |
JP3477406B2 (ja) * | 1999-10-05 | 2003-12-10 | 株式会社日立ユニシアオートモティブ | 内燃機関のバルブタイミング変更装置 |
JP3871478B2 (ja) * | 1999-10-14 | 2007-01-24 | 株式会社日立製作所 | 内燃機関のバルブタイミング変更装置 |
DE19958541A1 (de) * | 1999-12-04 | 2001-06-07 | Schaeffler Waelzlager Ohg | Vorrichtung zur Drehwinkelverstellung einer Nockenwelle |
DE10007200A1 (de) * | 2000-02-17 | 2001-08-23 | Schaeffler Waelzlager Ohg | Vorrichtung zum Verändern der Steuerzeiten von Gaswechselventilen einer Brennkraftmaschine |
DE10020119A1 (de) * | 2000-04-22 | 2001-10-25 | Schaeffler Waelzlager Ohg | Vorrichtung zur unabhängigen hydraulischen Verstellung der Phasen- und Axiallage einer Nockenwelle |
JP3971887B2 (ja) * | 2000-06-22 | 2007-09-05 | 株式会社日立製作所 | 内燃機関のバルブタイミング変更装置 |
JP4503195B2 (ja) * | 2001-03-05 | 2010-07-14 | 三菱電機株式会社 | バルブタイミング調整装置 |
JP2003003809A (ja) * | 2001-06-25 | 2003-01-08 | Hitachi Unisia Automotive Ltd | 内燃機関のバルブタイミング制御装置 |
DE10150856B4 (de) | 2001-10-15 | 2005-08-11 | Ina-Schaeffler Kg | Vorrichtung zum Verändern der Steuerzeiten von Gaswechselventilen einer Brennkraftmaschine, insbesondere Rotationskolben-Verstelleinrichtung zur Drehwinkelverstellung einer Nockenwelle gegenüber einer Kurbelwelle |
JP3986331B2 (ja) * | 2002-03-07 | 2007-10-03 | 株式会社日立製作所 | 内燃機関のバルブタイミング制御装置 |
DE10218201C1 (de) * | 2002-04-24 | 2003-10-30 | Porsche Ag | Nockenwellenversteller für eine veränderbare Ventilsteuerung |
-
2003
- 2003-07-19 DE DE2003132881 patent/DE10332881A1/de not_active Withdrawn
-
2004
- 2004-05-21 DE DE502004011559T patent/DE502004011559D1/de not_active Expired - Lifetime
- 2004-05-21 EP EP04734221A patent/EP1646769B1/de not_active Expired - Fee Related
- 2004-05-21 WO PCT/EP2004/005447 patent/WO2005019611A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2005019611A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2005019611A1 (de) | 2005-03-03 |
EP1646769B1 (de) | 2010-08-18 |
DE10332881A1 (de) | 2005-02-10 |
DE502004011559D1 (de) | 2010-09-30 |
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