EP0538508A1 - Druckölversorgung für die variable Ventilsteuerung einer Brennkraftmaschine - Google Patents

Druckölversorgung für die variable Ventilsteuerung einer Brennkraftmaschine Download PDF

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Publication number
EP0538508A1
EP0538508A1 EP91118040A EP91118040A EP0538508A1 EP 0538508 A1 EP0538508 A1 EP 0538508A1 EP 91118040 A EP91118040 A EP 91118040A EP 91118040 A EP91118040 A EP 91118040A EP 0538508 A1 EP0538508 A1 EP 0538508A1
Authority
EP
European Patent Office
Prior art keywords
camshaft
pressure
pressure oil
internal combustion
combustion engine
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.)
Withdrawn
Application number
EP91118040A
Other languages
German (de)
English (en)
French (fr)
Inventor
Richard Dipl.-Ing. Clos
Wilhelm Dipl.-Ing. Hannibal
Fred Prof. Dr.-Ing. Schäfer
Norbert Dr.-Ing. Südhaus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Audi AG
Original Assignee
Audi AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Audi AG filed Critical Audi AG
Publication of EP0538508A1 publication Critical patent/EP0538508A1/de
Withdrawn legal-status Critical Current

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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
    • F01L1/02—Valve drive
    • F01L1/024—Belt drive
    • 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
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
    • F01M9/10—Lubrication of valve gear or auxiliaries
    • F01M9/102—Lubrication of valve gear or auxiliaries of camshaft bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
    • F01M9/10—Lubrication of valve gear or auxiliaries
    • F01M9/108—Lubrication of valve gear or auxiliaries of auxiliaries
    • 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
    • F01L2001/34426—Oil control valves

Definitions

  • the invention relates to an internal combustion engine with variable valve control according to the preamble of claim 1.
  • This relatively low pressure of, for example, 1 bar compared to the pump pressure of approximately 4-5 bar requires large piston areas for the actuating piston of the camshaft adjusting device in order to achieve the required adjusting force, which results in a large structural volume for the adjusting device.
  • a large piston area entails a correspondingly large filling space, which leads to relatively long adjustment times.
  • the invention has for its object to provide an internal combustion engine of the generic type, the camshaft adjusting device takes up little space and short adjustment times and has a pressure oil supply that can be made easy with minimal construction effort.
  • the full pressure of the lubricating oil pump is available for the actuation of the shift sleeve without the need for a separate hydraulic system.
  • FIG. 1 in which an internal combustion engine is shown schematically, which has a cylinder crankcase 1, a cylinder head 2 and an oil pan 3. At least one camshaft 4 is supported in the cylinder head 2 and is driven by the crankshaft 5 of the internal combustion engine via a traction mechanism 6.
  • a device 13 which is shown in detail in FIG. 2, serves for angular adjustment of the camshaft 4 relative to the drive wheel 14 driven by the crankshaft 5, which is rotatably mounted on an extension 15 of the camshaft 4.
  • the adjusting device 13 has a shift sleeve 16, which is arranged coaxially to the camshaft 4 and is axially displaceable between two end positions in the upper half of FIG. 2 in one end position and in the lower half of FIG. 2 in the other end position.
  • a positive connection between the drive wheel 14 and the camshaft 4 is produced by the toothings 17, 18 and 19, 20.
  • camshaft 4 is rotated relative to drive wheel 14 and thus a change in the valve timing, which is actuated by cam 4a of camshaft 4.
  • the shift sleeve 16 is moved hydraulically.
  • the switching sleeve 16 is in one piece with an actuating piston 21, which is arranged in a cylindrical space 22 within the drive wheel 14 and divides this space into two pressure chambers 23 and 24, which are alternately provided with a pressure oil by a changeover valve 25 depending on operating parameters.
  • Inflow channel 26 or with a pressure oil discharge channel 27 can be connected.
  • the changeover valve 25 is normally integrated in the cylinder head and is shown as a separate component only for the sake of clarity.
  • the pressure chamber 23 is connected to the changeover valve 25 via a radial bore 28 in the camshaft 4 and a channel 29 in the cylinder head 1, which opens into the bearing surface 12 of the camshaft 4.
  • the pressure chamber 24 is connected to the changeover valve 25 through a longitudinal bore 30, a radial bore 35 and a groove 36 in the shift sleeve 16 as well as via a second radial bore 31 in the camshaft and a channel 32 in the Cylinder head, which in turn opens into the bearing surface 12 of the camshaft 4.
  • the position of the changeover valve 25 shown corresponds to the position of the switching sleeve 16 in the lower half of FIG. 2, in which the pressure chamber 24 is connected to the inflow channel 26 and the pressure chamber 23 to the return flow channel 27.
  • the bearing points 12 of the camshaft 4 are supplied with lubricating oil via a throttle point 11.
  • the relevant lubricating oil channel 33 is shown in broken lines in FIG. 2. From him branch channels 34 go to the individual bearing points 12.
  • the pressure oil inflow channel 26 for the adjusting device 13 is branched off from the delivery line 10 of the lubricating oil pump 7 in front of the throttle point 11.
  • the full oil pressure of the lubricating oil pump 7 can be used for the adjusting device, which has the consequence that the adjusting piston 21 has a relatively small diameter and can therefore be arranged without problems within the drive wheel 14. Due to the small volume of the pressure chambers 23, 24 to be filled and the high pressure, extremely short switching times can be achieved.
  • three branch channels 34a are provided for this bearing, which in the middle and on both sides of the mouths of the channels 29, 32 in the Storage area open.
  • a modified pressure oil supply to the pressure chambers 23 and 24 is shown, namely the pressure oil supply takes place through two parallel longitudinal bores 40 and 41 and radial bores 42, 43 in the shift sleeve 16 ', which, as in the exemplary embodiment according to FIG. 2, are connected to radial bores 44, 45 in the camshaft 4', which in turn are connected to the changeover valve 25 by channels 29 ', 32'.
  • a semicircular groove 46 is provided in the bearing shell of the bearing 12 'for each radial bore 44, 45 in the less loaded area of the bearing, via which the feed and return of the pressure oil to and from the pressure chambers.
  • the lubricating oil can also pass from the branch channel 34 'into the area of the bearing which, however, is only in half connected to the unpressurized return channel 27, that is to say in the area of the lower half of the bearing in FIG.
  • the proposal according to the invention to branch off the pressure oil supply to the adjusting device upstream of the throttle point 11 can also be used with an adjusting device in which the adjusting piston is only subjected to pressure oil on one side in order to cause a shifting sleeve to be displaced in one direction while the displacement is in the other direction done by spring force.
  • an adjustment device is known for example from DE-C 33 16 162.

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)
  • Lubrication Of Internal Combustion Engines (AREA)
EP91118040A 1990-07-27 1991-10-23 Druckölversorgung für die variable Ventilsteuerung einer Brennkraftmaschine Withdrawn EP0538508A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4023853A DE4023853A1 (de) 1990-07-27 1990-07-27 Ventilgesteuerte brennkraftmaschine

Publications (1)

Publication Number Publication Date
EP0538508A1 true EP0538508A1 (de) 1993-04-28

Family

ID=6411108

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91118040A Withdrawn EP0538508A1 (de) 1990-07-27 1991-10-23 Druckölversorgung für die variable Ventilsteuerung einer Brennkraftmaschine

Country Status (3)

Country Link
US (1) US5144921A (enrdf_load_stackoverflow)
EP (1) EP0538508A1 (enrdf_load_stackoverflow)
DE (1) DE4023853A1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1921371A3 (de) * 2006-11-10 2008-05-28 BOMAG GmbH Ölschmierung

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04191406A (ja) * 1990-11-26 1992-07-09 Atsugi Unisia Corp 内燃機関のバルブタイミング制御装置
JPH0547309U (ja) * 1991-11-28 1993-06-22 株式会社ユニシアジェックス 内燃機関のバルブタイミング制御装置
DE4218082C5 (de) * 1992-06-01 2006-06-29 Schaeffler Kg Vorrichtung zur kontinuierlichen Winkelverstellung zwischen zwei in Antriebsverbindung stehenden Wellen
DE4218078C5 (de) * 1992-06-01 2006-07-13 Schaeffler Kg Vorrichtung zur selbsttätigen, kontinuierlichen Winkelverstellung zwischen zwei in Antriebsverbindung stehenden Wellen
JPH0610626A (ja) * 1992-06-26 1994-01-18 Nippondenso Co Ltd 内燃機関のバルブタイミング制御装置
DE4301647A1 (de) * 1993-01-22 1994-07-28 Bayerische Motoren Werke Ag Vorrichtung zur Winkelverstellung einer Brennkraftmaschinen-Nockenwelle
US5327859A (en) * 1993-06-09 1994-07-12 General Motors Corporation Engine timing drive with fixed and variable phasing
US5325826A (en) * 1993-11-04 1994-07-05 Ford Motor Company Journal bearing oil diverter
DE69411126T2 (de) * 1993-11-18 1998-10-15 Atsugi Unisia Corp Vorrichtung zur Veränderung der Nockensteuerung einer Brennkraftmaschine
IT1281881B1 (it) * 1995-05-11 1998-03-03 Carraro Spa Dispositivo meccanico per variare la fase fra albero motore ed un albero a camme di un motore a combustione interna.
JP2924777B2 (ja) * 1996-04-08 1999-07-26 トヨタ自動車株式会社 内燃機関のバルブタイミング可変機構
JP3834890B2 (ja) * 1996-10-15 2006-10-18 トヨタ自動車株式会社 内燃機関のバルブ特性制御装置
JPH10184323A (ja) * 1996-12-26 1998-07-14 Yamaha Motor Co Ltd ４サイクルエンジン
JPH11303615A (ja) * 1998-04-24 1999-11-02 Yamaha Motor Co Ltd 可変バルブタイミング装置付きエンジン
JP3865025B2 (ja) * 1998-09-30 2007-01-10 スズキ株式会社 油圧制御装置付エンジンのオイル通路構造
SE522629C2 (sv) * 2000-06-05 2004-02-24 Volvo Lastvagnar Ab Anordning för reglering av fasvinkel mellan en första och en andra vevaxel
DE10050225A1 (de) * 2000-10-11 2002-04-25 Hydraulik Ring Gmbh Betätigungseinrichtung zum Festlegen einer Nockenwelle eines Antriebsmotors eines Fahrzeuges, vorzugsweise eines Kraftfahrzeuges, in einer Startposition
US6782856B2 (en) 2002-04-09 2004-08-31 Ford Global Technologies, Llc Camshaft accumulator
DE102005026247A1 (de) * 2005-06-08 2006-12-14 Schaeffler Kg Nockenwellentrieb für eine Brennkraftmaschine eines Kraftfahrzeugs

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0275715A1 (en) * 1986-12-26 1988-07-27 Honda Giken Kogyo Kabushiki Kaisha Hydraulic circuit of a valve operating timing control device in an internal combustion engine
DE4024056C1 (enrdf_load_stackoverflow) * 1990-07-28 1991-09-19 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart, De

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3869928A (en) * 1972-09-05 1975-03-11 Tokico Ltd Unidirectional rotation actuator
IT1152959B (it) * 1982-05-17 1987-01-14 Alfa Romeo Spa Dispositivo per la variazione automatica della fasatura di un albero a camme
DE3616234A1 (de) * 1986-05-14 1987-11-19 Bayerische Motoren Werke Ag Vorrichtung zur relativen drehlagenaenderung zweier in antriebsverbindung stehender wellen, insbesondere zwischen in einem maschinengehaeuse einer brennkraftmaschine gelagerten kurbelwelle und nockenwelle
US4883027A (en) * 1987-11-25 1989-11-28 Honda Giken Kogyo Kabushiki Kaisha Valve operating system for internal combustion engines
CA1330026C (en) * 1987-12-28 1994-06-07 Tomonori Niizato Lubricant supplying system for dohc type multi-cylinder internal combustion engine
DE3810804A1 (de) * 1988-03-30 1989-10-19 Daimler Benz Ag Vorrichtung zur relativen winkelverstellung zwischen zwei in antriebsverbindung stehenden wellen
JPH087043Y2 (ja) * 1988-10-29 1996-02-28 富士重工業株式会社 ダブルオーバヘッドカム型動弁機構の潤滑装置
JPH035305A (ja) * 1989-05-29 1991-01-11 Takao Tomai 発生機の酸素もしくは発生機の水素を多量に溶存する水、ならびに発生機の酸素もしくは発生機の水素を多量に含有する空気の製造方法
JPH082414Y2 (ja) * 1989-07-29 1996-01-29 マツダ株式会社 多気筒エンジンの潤滑装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0275715A1 (en) * 1986-12-26 1988-07-27 Honda Giken Kogyo Kabushiki Kaisha Hydraulic circuit of a valve operating timing control device in an internal combustion engine
DE4024056C1 (enrdf_load_stackoverflow) * 1990-07-28 1991-09-19 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart, De

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1921371A3 (de) * 2006-11-10 2008-05-28 BOMAG GmbH Ölschmierung

Also Published As

Publication number Publication date
US5144921A (en) 1992-09-08
DE4023853C2 (enrdf_load_stackoverflow) 1993-06-03
DE4023853A1 (de) 1992-01-30

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