WO1999043930A1 - Einrichtung zum einstellen des bewegungsverlaufs der gaswechselventile einer brennkraftmaschine - Google Patents
Einrichtung zum einstellen des bewegungsverlaufs der gaswechselventile einer brennkraftmaschine Download PDFInfo
- Publication number
- WO1999043930A1 WO1999043930A1 PCT/EP1999/001180 EP9901180W WO9943930A1 WO 1999043930 A1 WO1999043930 A1 WO 1999043930A1 EP 9901180 W EP9901180 W EP 9901180W WO 9943930 A1 WO9943930 A1 WO 9943930A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- camshaft
- value
- adjusting
- adjustment
- actuating
- Prior art date
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
- F01L1/34403—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 helically teethed sleeve or gear moving axially between crankshaft and camshaft
- F01L1/34406—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 helically teethed sleeve or gear moving axially between crankshaft and camshaft the helically teethed sleeve being located in the camshaft driving pulley
-
- 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
- F01L2001/34423—Details relating to the hydraulic feeding circuit
- F01L2001/34436—Features or method for avoiding malfunction due to foreign matters in oil
- F01L2001/34443—Cleaning control of oil control valves
-
- 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
- F01L2800/00—Methods of operation using a variable valve timing mechanism
- F01L2800/05—Timing control under consideration of oil condition
Definitions
- the invention relates to a device for adjusting the course of movement of the gas exchange valves of an internal combustion engine according to the preamble of claim 1.
- DE 43 40 614 C2 discloses a device for rotating a camshaft relative to the crankshaft in an internal combustion engine.
- the device has a controller which generates an actuating signal as a function of the deviation of an actual position of the camshaft from a desired position.
- the control signal is corrected multiplicatively with a correction factor, which is determined depending on the speed and the oil temperature.
- controllers have significant dead times that reduce the maximum achievable control speed.
- the controller can either be parameterized in such a way that a jump in the set position is only tracked slowly, or that a jump in the set position is tracked quickly with the consequence of a low stability reserve.
- a rapid tracking of jumps in the target position is necessary in order to ensure comfortable operation of the internal combustion engine, even in the institutional mode, with low fuel consumption and high performance at the same time.
- the object of the invention is to further develop the known device in such a way that comfortable operation of the internal combustion engine, even in unsteady mode and with long dead times of the device, is ensured with low fuel consumption and high output.
- the object is achieved by the features of patent claim 1.
- the solution is characterized by the fact that the course of movement of the gas exchange valves can surprisingly be adjusted very quickly. In this way, the desired course of movement of the gas exchange valves in the current operating state of the internal combustion engine can be ensured.
- the controller only has to compensate for inaccuracies in the precontrol.
- FIG. 1 an internal combustion engine
- FIG. 2 shows a camshaft with a section through a mechanical adjusting part
- FIG. 3 shows a block diagram of the device for adjusting the course of movement of the gas exchange valves.
- An internal combustion engine (FIG. 1) comprises a cylinder 1 with a piston 11 and a connecting rod 12.
- the connecting rod 12 is connected to the piston 11 and a crankshaft 2.
- a first gear 21 is arranged on the crankshaft 2.
- the first gear 21 is mechanically coupled via a chain 21 a to a second gear 31, which is arranged on a camshaft 3.
- the camshaft 3 has cams 32, 33 which act on gas exchange valves 41, 42.
- the internal combustion engine is shown in FIG. 1 with a cylinder. 3 places. Of course, the internal combustion engine can also have several cylinders.
- An actuating device 5 for setting the course of movement of the gas exchange valves is assigned to the internal combustion engine.
- the actuating device 5 has a mechanical adjustment part 51, which is connected via hydraulic lines 52, 53 to an actuator 54, which is preferably designed as a hydraulic three-two-way valve.
- the actuator is connected to a high-pressure hydraulic line 55 and a low-pressure hydraulic line 56 to an oil reservoir, to which an oil pump may also be assigned.
- a control device 6 is provided, to which sensors are assigned, which record different measured variables and each determine the measured value of the measured variable.
- the control device 5 determines an actuating signal TVAN_S for the actuator 54 depending on the measured variables.
- the sensors are designed as a speed sensor 71, which detects a speed N and a crankshaft angle KW of crankshaft 2, a camshaft angle sensor 72, which detects camshaft angle NW, an air mass meter 73, which detects an air mass flow MAF, or an oil temperature sensor 74, which detects the oil temperature TOEL detected.
- a speed sensor 71 which detects a speed N and a crankshaft angle KW of crankshaft 2
- a camshaft angle sensor 72 which detects camshaft angle NW
- an air mass meter 73 which detects an air mass flow MAF
- an oil temperature sensor 74 which detects the oil temperature TOEL detected.
- any subset of the sensors mentioned or additional sensors can be present.
- FIG. 2 shows the camshaft 3 with the mechanical adjustment part 51 m in a sectional view.
- the second gear 31 is assigned to the mechanical adjusting part 51 and is connected to a third gear 511 in a form-fitting manner.
- the third gear 511 has a helical toothing which engages in an associated helical toothing of a ring gear 512.
- the ring gear has on its inside 4 set up a straight toothing which engages a correspondingly formed toothing of a fourth gear 583.
- the ring gear 512 is axially displaced to the camshaft.
- a spring 514 is provided to reset the ring gear m a predetermined rest position when no forces caused by the oil pressure m act on the ring gear 512.
- the adjusting device 5 enables a phase adjustment of the camshaft 3 relative to the crankshaft 4.
- the phase can thus be adjusted continuously within a predetermined range.
- the start of stroke and the end of stroke of the gas exchange valves can thus be varied.
- FIG. 3 shows a block diagram of the control device 6, which controls the setting of the movement course of the gas exchange valves.
- a setpoint NWSOLL for the adjustment of the camshaft is determined from a first map as a function of the speed N and the air mass flow MAF or another load size.
- a feedforward control has a summation point S1, which determines the difference NWSOLL_DIF of the setpoint NWSOLL and a treasure value NW_MOD__0_TOTZ of the adjustment of the camshaft without taking into account the dead time TOTZ_VANOS of the actuating device.
- a pilot control value T_VAN of the duration of the energization of the three-two-way valve 54 is determined.
- the pilot control value T_VAN is determined cyclically with a predefined cycle time, preferably speed-synchronously.
- a block B2 simulates the path behavior of the actuating device 5 and comprises, for example, an integrator which is dependent on the pilot control value T VAN and the cycle duration and the rotational speed.
- number N and a determined adjustment speed of the camshaft determines the treasure value NW_MOD_0_TOTZ of the adjustment of the camshaft without taking into account the dead time TOTZ_VANOS.
- the dead time TOTZ_VANOS is caused by the excitation time of the electromagnets of the three-two-way valve, the behavior of the hydraulic system at different 01 viscosities, the pressure build-up at low engine speeds N and the design of the three-two-way valve itself.
- a treasure value NW_M0D of the adjustment of the camshaft is determined taking into account the dead time of the actuating device 5. This takes place depending on the dead time TOTZ_VANOS of the actuating device 5, which is determined from a map depending on the speed N, the air mass flow MAF and the oil temperature TOIL.
- the difference between the measured value NWIST and the estimated value NW_MOD of the adjustment of the camshaft is determined in a second summation point S2.
- the measured value NWIST of the adjustment of the camshaft 3 is determined as a function of the detected crankshaft angle KW and camshaft angle NW.
- a controller which, depending on the difference NW_DIF_REG of the actual value NWIST and the treasure value NW_MOD and the dead time TOTZ_VANOS, determines a control value TVAN_REG of the duration of the current supply to the three-two-way valve.
- the controller is preferably designed as a P controller. However, it can also be designed as a PI or PID controller or as another controller known to the person skilled in the art.
- the controller is preferably designed to be adaptive, in such a way that the controller parameters depend on the dead time TOTZ_VANOS.
- a block B5 is preferably provided which comprises an integrator which integrates the control value TVAN_REG until it exceeds a minimum time period T_MIN_VAN for energizing the three-two-way valve. If the integrated control value T_VAN_REG_INT exceeds the minimum time period T_MIN_VAN, this integrated control value is output to a third summing point S3 and the integrator is reset. This ensures that even small control differences can be corrected, which lead to energization times that are within the tolerance range of the actuating device 5.
- block B6 it is checked whether the difference between the pilot control value T_VAN and the integrated control value T_VAN_REG_INT of the time period for energizing the three-two-way valve has an amount that is greater than the minimum time period T_MIN_V for energizing the three-two-way valve . Only in this case is the respective electromagnet of the three-two-way valve energized for the time period TVAN_S. This increases the service life of the actuating device 5, in particular of the three-two-way valve 54, since it is energized less frequently during the operation of the internal combustion engine.
- the controller of block B4 only has to compensate for inaccuracies in the precontrol.
- the adjustment of the camshaft 3 can thus be adjusted very quickly.
- the control device is also characterized in that the precontrol implements the position specification independently of the system dead time with a very high, generally maximum adjustment speed.
- the permissible range of fluctuations in the dead time for the controller is high. This increases the robustness of the control loop considerably without one 7 measurable deterioration in control quality and control speed.
- the adjusting part 51 can also be designed such that the stroke course of the gas exchange valves can be varied.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99908943A EP1058774B1 (de) | 1998-02-27 | 1999-02-24 | Einrichtung zum einstellen des bewegungsverlaufs der gaswechselventile einer brennkraftmaschine |
JP2000533652A JP4316797B2 (ja) | 1998-02-27 | 1999-02-24 | 内燃機関のガス交換弁の運動過程を調整する装置 |
DE59905327T DE59905327D1 (de) | 1998-02-27 | 1999-02-24 | Einrichtung zum einstellen des bewegungsverlaufs der gaswechselventile einer brennkraftmaschine |
US09/648,954 US6318314B1 (en) | 1998-02-27 | 2000-08-28 | Device for setting the movement behavior of gas-exchange valves of an internal combustion engine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19808354 | 1998-02-27 | ||
DE19808354.8 | 1998-02-27 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/648,954 Continuation US6318314B1 (en) | 1998-02-27 | 2000-08-28 | Device for setting the movement behavior of gas-exchange valves of an internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999043930A1 true WO1999043930A1 (de) | 1999-09-02 |
Family
ID=7859131
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1999/001180 WO1999043930A1 (de) | 1998-02-27 | 1999-02-24 | Einrichtung zum einstellen des bewegungsverlaufs der gaswechselventile einer brennkraftmaschine |
Country Status (6)
Country | Link |
---|---|
US (1) | US6318314B1 (de) |
EP (1) | EP1058774B1 (de) |
JP (1) | JP4316797B2 (de) |
DE (1) | DE59905327D1 (de) |
ES (1) | ES2198899T3 (de) |
WO (1) | WO1999043930A1 (de) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1087106A2 (de) * | 1999-09-25 | 2001-03-28 | Volkswagen Aktiengesellschaft | Verfahren zur Nockenwellenverstellung in einer Brennkraftmaschine |
DE10108055C1 (de) * | 2001-02-20 | 2002-08-08 | Siemens Ag | Verfahren zum Steuern einer Brennkraftmaschine |
DE10232942A1 (de) * | 2002-07-19 | 2004-02-26 | Siemens Ag | Verfahren zur Steuerung einer gleichmäßigen Drehmomentabgabe einer Brennkraftmaschine mit Abgasturbolader |
DE10124992B4 (de) * | 2000-11-17 | 2005-09-15 | Mitsubishi Denki K.K. | Ventileinstellregelgerät für Verbrennungsmotoren |
DE102004031295A1 (de) * | 2004-06-29 | 2006-01-26 | Audi Ag | Verfahren zum Durchführen von Verstellvorgängen für Ventile bei Brennkraftmaschinen mit mehreren Brennkammern sowie Brennkraftmaschine zur Durchführung des Vefahrens |
DE10303705B4 (de) * | 2003-01-30 | 2006-08-31 | Siemens Ag | Verfahren zum Betreiben einer mit Kraftstoffdirekteinspritzung arbeitenden Brennkraftmaschine |
EP1605140A3 (de) * | 2004-06-09 | 2009-04-22 | Schaeffler KG | Verstellvorrichtung für eine Nockenwelle |
WO2013171321A1 (de) * | 2012-05-18 | 2013-11-21 | Schaeffler Technologies AG & Co. KG | Nockenwelleneinheit |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE522629C2 (sv) * | 2000-06-05 | 2004-02-24 | Volvo Lastvagnar Ab | Anordning för reglering av fasvinkel mellan en första och en andra vevaxel |
US6766776B2 (en) * | 2002-06-17 | 2004-07-27 | Borgwarner Inc. | Control method for preventing integrator wind-up when operating VCT at or near its physical stops |
US6810843B2 (en) * | 2002-06-17 | 2004-11-02 | Borgwarner Inc. | Control method for achieving expected VCT actuation rate using set point rate limiter |
JP3849618B2 (ja) * | 2002-08-30 | 2006-11-22 | トヨタ自動車株式会社 | 内燃機関の動弁装置の制御装置 |
JP4225186B2 (ja) * | 2003-11-19 | 2009-02-18 | トヨタ自動車株式会社 | 内燃機関のバルブタイミング制御装置 |
EP1553265B1 (de) * | 2004-01-07 | 2007-08-22 | Ford Global Technologies, LLC | System und Verfahren zur Abschätzung eines Models des Betriebs eines Ölsystems der Brennkraftmaschine eines Fahrzeuges |
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JPS60190610A (ja) * | 1984-03-09 | 1985-09-28 | Mazda Motor Corp | エンジンのバルブタイミング制御装置 |
EP0445555A2 (de) * | 1990-03-06 | 1991-09-11 | Bayerische Motoren Werke Aktiengesellschaft | Regelverfahren zur drehzahlabhängigen, stufenlosen Verstellung der Nockenpreizung |
DE4306509C1 (de) * | 1993-03-03 | 1994-03-03 | Bayerische Motoren Werke Ag | Verfahren zur Verstellung einer Nockenwelle bei Brennkraftmaschinen |
US5363817A (en) * | 1993-03-25 | 1994-11-15 | Nippondenso Co., Ltd. | Valve operation timing regulation apparatus for internal combustion engines |
DE4408425A1 (de) * | 1993-06-16 | 1994-12-22 | Bosch Gmbh Robert | Verfahren und Vorrichtung zum Einregeln der Winkellage einer Nockenwelle |
GB2288037A (en) * | 1994-03-31 | 1995-10-04 | Nippon Denso Co | Valve time control mechanism for internal combustion engine |
DE4340614C2 (de) | 1993-11-29 | 1998-01-22 | Bayerische Motoren Werke Ag | Vorrichtung zur Verdrehung einer Nockenwelle gegenüber der Kurbelwelle in einer Kraftfahrzeug-Brennkraftmaschine |
Family Cites Families (11)
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US4909194A (en) | 1989-07-20 | 1990-03-20 | Siemens-Bendix Automotive Electronics L.P. | Modular position controller for variable valve timing |
DE3942052A1 (de) | 1989-12-20 | 1991-06-27 | Audi Ag | Vorrichtung zum verstellen der steuerzeiten |
DE4240631A1 (de) | 1992-12-03 | 1994-06-09 | Bayerische Motoren Werke Ag | Hubkolben-Brennkraftmaschine mit zumindest zwei Gaswechselventilen je Zylinder |
DE4230074A1 (de) | 1992-09-09 | 1994-03-10 | Bayerische Motoren Werke Ag | Hubkolben-Brennkraftmaschine mit zwei Gaswechselventilen je Zylinder |
DE4331977A1 (de) | 1993-09-21 | 1995-03-23 | Porsche Ag | Variable Ventilsteuerung |
DE4413443C2 (de) | 1994-04-18 | 1998-10-01 | Korostenski Erwin | Brennkraftmaschine |
JP3733600B2 (ja) * | 1994-08-31 | 2006-01-11 | 株式会社デンソー | エンジンの弁動作タイミング調整装置 |
DE19541769A1 (de) | 1995-11-09 | 1997-05-15 | Schaeffler Waelzlager Kg | Arretierung für einen Kolben einer Nockenwellenverstellung |
US5680834A (en) * | 1996-01-22 | 1997-10-28 | Ford Global Technologies, Inc. | Just-in-time scheduling for variable camshaft timing |
DE19622555A1 (de) | 1996-06-05 | 1997-12-11 | Schaeffler Waelzlager Kg | Nockenwellenverstellvorrichtung mit einer druckabhängigen Kopplung des Stellkolbens in einer Endlage |
US5787848A (en) * | 1997-12-05 | 1998-08-04 | Ford Global Technologies, Inc. | Method of system for operating an internal combustion engine having variable valve timing |
-
1999
- 1999-02-24 DE DE59905327T patent/DE59905327D1/de not_active Expired - Lifetime
- 1999-02-24 EP EP99908943A patent/EP1058774B1/de not_active Expired - Lifetime
- 1999-02-24 JP JP2000533652A patent/JP4316797B2/ja not_active Expired - Lifetime
- 1999-02-24 ES ES99908943T patent/ES2198899T3/es not_active Expired - Lifetime
- 1999-02-24 WO PCT/EP1999/001180 patent/WO1999043930A1/de active IP Right Grant
-
2000
- 2000-08-28 US US09/648,954 patent/US6318314B1/en not_active Expired - Lifetime
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JPS60190610A (ja) * | 1984-03-09 | 1985-09-28 | Mazda Motor Corp | エンジンのバルブタイミング制御装置 |
EP0445555A2 (de) * | 1990-03-06 | 1991-09-11 | Bayerische Motoren Werke Aktiengesellschaft | Regelverfahren zur drehzahlabhängigen, stufenlosen Verstellung der Nockenpreizung |
DE4306509C1 (de) * | 1993-03-03 | 1994-03-03 | Bayerische Motoren Werke Ag | Verfahren zur Verstellung einer Nockenwelle bei Brennkraftmaschinen |
US5363817A (en) * | 1993-03-25 | 1994-11-15 | Nippondenso Co., Ltd. | Valve operation timing regulation apparatus for internal combustion engines |
DE4408425A1 (de) * | 1993-06-16 | 1994-12-22 | Bosch Gmbh Robert | Verfahren und Vorrichtung zum Einregeln der Winkellage einer Nockenwelle |
DE4340614C2 (de) | 1993-11-29 | 1998-01-22 | Bayerische Motoren Werke Ag | Vorrichtung zur Verdrehung einer Nockenwelle gegenüber der Kurbelwelle in einer Kraftfahrzeug-Brennkraftmaschine |
GB2288037A (en) * | 1994-03-31 | 1995-10-04 | Nippon Denso Co | Valve time control mechanism for internal combustion engine |
Non-Patent Citations (1)
Title |
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PATENT ABSTRACTS OF JAPAN vol. 010, no. 037 (M - 453) 14 February 1986 (1986-02-14) * |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1087106A2 (de) * | 1999-09-25 | 2001-03-28 | Volkswagen Aktiengesellschaft | Verfahren zur Nockenwellenverstellung in einer Brennkraftmaschine |
EP1087106A3 (de) * | 1999-09-25 | 2002-12-18 | Volkswagen Aktiengesellschaft | Verfahren zur Nockenwellenverstellung in einer Brennkraftmaschine |
DE10124992B4 (de) * | 2000-11-17 | 2005-09-15 | Mitsubishi Denki K.K. | Ventileinstellregelgerät für Verbrennungsmotoren |
US6691024B2 (en) | 2001-02-20 | 2004-02-10 | Siemens Aktiengesellschaft | Control of internal combustion engine based on phase position of camshaft relative to crankshaft |
DE10108055C1 (de) * | 2001-02-20 | 2002-08-08 | Siemens Ag | Verfahren zum Steuern einer Brennkraftmaschine |
DE10232942A1 (de) * | 2002-07-19 | 2004-02-26 | Siemens Ag | Verfahren zur Steuerung einer gleichmäßigen Drehmomentabgabe einer Brennkraftmaschine mit Abgasturbolader |
DE10232942B4 (de) * | 2002-07-19 | 2004-08-26 | Siemens Ag | Verfahren zur Steuerung einer gleichmäßigen Drehmomentabgabe einer Brennkraftmaschine mit Abgasturbolader |
DE10303705B4 (de) * | 2003-01-30 | 2006-08-31 | Siemens Ag | Verfahren zum Betreiben einer mit Kraftstoffdirekteinspritzung arbeitenden Brennkraftmaschine |
EP1605140A3 (de) * | 2004-06-09 | 2009-04-22 | Schaeffler KG | Verstellvorrichtung für eine Nockenwelle |
DE102004031295A1 (de) * | 2004-06-29 | 2006-01-26 | Audi Ag | Verfahren zum Durchführen von Verstellvorgängen für Ventile bei Brennkraftmaschinen mit mehreren Brennkammern sowie Brennkraftmaschine zur Durchführung des Vefahrens |
DE102004031295B4 (de) * | 2004-06-29 | 2008-03-13 | Audi Ag | Verfahren zum Durchführen von Verstellvorgängen für Ventile bei Brennkraftmaschinen mit mehreren Brennkammern sowie Brennkraftmaschine zur Durchführung des Vefahrens |
WO2013171321A1 (de) * | 2012-05-18 | 2013-11-21 | Schaeffler Technologies AG & Co. KG | Nockenwelleneinheit |
US9297283B2 (en) | 2012-05-18 | 2016-03-29 | Schaeffler Technologies AG & Co. KG | Camshaft unit |
Also Published As
Publication number | Publication date |
---|---|
JP4316797B2 (ja) | 2009-08-19 |
DE59905327D1 (de) | 2003-06-05 |
EP1058774A1 (de) | 2000-12-13 |
ES2198899T3 (es) | 2004-02-01 |
JP2002505398A (ja) | 2002-02-19 |
US6318314B1 (en) | 2001-11-20 |
EP1058774B1 (de) | 2003-05-02 |
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