EP0644318A1 - Variable Ventilsteuerung - Google Patents

Variable Ventilsteuerung Download PDF

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Publication number
EP0644318A1
EP0644318A1 EP94112492A EP94112492A EP0644318A1 EP 0644318 A1 EP0644318 A1 EP 0644318A1 EP 94112492 A EP94112492 A EP 94112492A EP 94112492 A EP94112492 A EP 94112492A EP 0644318 A1 EP0644318 A1 EP 0644318A1
Authority
EP
European Patent Office
Prior art keywords
camshaft
variable valve
valve control
control according
cams
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Withdrawn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
EP94112492A
Other languages
German (de)
English (en)
French (fr)
Inventor
Peter Schmid
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.)
Dr Ing HCF Porsche AG
Original Assignee
Dr Ing HCF Porsche 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 Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Publication of EP0644318A1 publication Critical patent/EP0644318A1/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Withdrawn legal-status Critical Current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
    • F01L1/34413—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 composite camshafts, e.g. with cams being able to move relative to the camshaft
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2101—Cams
    • Y10T74/2102—Adjustable

Definitions

  • the invention relates to a variable valve control according to the preamble of claim 1.
  • variable valve controls not only can raw HC emissions be influenced favorably, but NO x emissions can also be reduced. They can also improve fuel consumption, stable idling, torque and performance of an internal combustion engine.
  • valve overlaps - intake and exhaust valves - are changed such that there is a relatively small overlap at low speeds and a relatively large overlap at higher speeds.
  • variable valve control with inlet and outlet cams which can be rotated relative to one another and which can be implemented without problems and is distinguished by good function.
  • the actuator with its drivers which engage in the groove of the inlet cam is not only structurally easy to implement but also reliable and highly effective with respect to the rotation function of the inlet cam.
  • Both the actuator and the camshaft are simple in construction, the latter being a so-called built camshaft can be fixed on the outlet cams, bearing bushes or the like and the inlet cams are rotatably mounted.
  • the actuating device comprises a hydraulic device and an electromagnet, is arranged on one end of the camshaft in a spatially advantageous manner and can optionally be constructed as a module that can be supplied, which can be used, for example, as a variant compared to a camshaft with fixed inlet and outlet cams for engines of the same construction but with different performance profiles .
  • this type of camshaft adjustment is suitable for so-called single-camshaft internal combustion engines, in which the intake and exhaust cams are arranged on a common shaft.
  • the camshaft 1 is arranged in a camshaft housing 2, which limits the combustion chambers of cylinders or a cylinder head of a multi-cylinder internal combustion engine.
  • the bearing journal 3 is made in one piece with the camshaft 1; the bearing pins 4, 5 and 6 are made separately from it. It is therefore a camshaft composed of several components, for which the term built camshaft is also used. In addition, are arranged on the camshaft 1: inlet cams 11, 12, 13 and outlet cams 14, 15, 16, and the bearing pins 4 and 5 are part of the bearing bushes 17, 18 surrounding the camshaft 1.
  • the camshaft 1 is on its outer peripheral surface 19 provided with a toothing 20 extending in the axial direction BB, on which the outlet cams 14, 15, 16, the bearing bushes 17, 18 and the bearing 6, which delimits an end face 21 of the camshaft 1, are rotatably fixed with a corresponding design.
  • a closing element 23 is inserted into a through bore 24 of the camshaft 1.
  • an actuator 26 belonging to a control device 25, which is axially movable - direction BB - and has a tubular configuration.
  • the actuator 26 has pins 27, 28, 29 designed as drivers which penetrate slot-like guide openings (FIG. 3) 30, 31, 32 in the camshaft 1 and with grooves 33, 34, 35 of control guides 36, 37, 38 of the inlet cams 11, 12, 13 work together.
  • the control guides 36, 37, 38 are positioned obliquely to a central longitudinal plane CC of the camshaft 1 (FIG. 4), as a result of which longitudinal movements - direction BB - of the actuator 26 in the region of the length FO L of the guide openings 30, 31, 32 to rotary movements - angle ⁇ (Fig. 2) - the inlet cam 11, 12, 13 lead.
  • the grooves 33, 34, 35 and opposite grooves 33 ', 34', 35 ' are from a bearing bore 39 of the respective inlet cam, e.g. 13, introduced, in the grooves 33, 34, 35 or in the grooves 33 ', 34', 35 'opposite these pin portions 40, 41 of the pins 27, 28, 29 engage.
  • the actuator 26 comprises a plurality of piston-like guide sections 42, 43, 44 and 45 distributed over its length, which are shown as local thickened bearings 46, 47, 48, 49 and interact with cylinder sections 50, 51, 52, 53 of the bore 24 of the camshaft 1.
  • the pins 27, 28, 29, which can be pressed into openings 54, 55, 56 of the actuator 26, are provided in the region of the bearing thickenings 47, 48, 49.
  • the bearing thickening 46 which runs adjacent to the other end face 57 of the camshaft, is designed as an oil supply device 58 for a hydraulic device 59.
  • the bearing thickening 46 has a sliding bore 60 for a fixed cylinder, in which an axial slide 62 is inserted.
  • the axial slide 62 is connected to an electromagnet 63.
  • a hydraulic piston 64 is attached to the bearing thickening 46, which is surrounded by a housing 65 and can be acted upon by hydraulic oil via a first pressure chamber D1 and a second pressure chamber D2.
  • the housing 65 is circular and has on its outside transmission means 66 - sprocket, belt ring - for belts, chains or the like, with which the camshaft 1 is driven by a crankshaft. With 67 a closing part for the housing 65 is designated; that limits the pressure space D1. Screws 68, which are aligned in the axial direction B-B of the camshaft, are used to fasten the hydraulic device 59 to the camshaft 1.
  • the camshaft 1 with the hydraulic device 59 and the adjusting device 25, possibly also just the housing 65, can be a prefabricated module which can be inserted into the camshaft housing 2 - possibly interchangeable with a camshaft with a fixed intake cam.
  • the switching points for the switching device 25, which bring about an adjustment of the inlet cams 11, 12, 13, can be determined as a function of the parameters speed, load - accelerator pedal position - and oil temperature by means of a computer.

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)
EP94112492A 1993-09-21 1994-08-10 Variable Ventilsteuerung Withdrawn EP0644318A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4331977 1993-09-21
DE4331977A DE4331977A1 (de) 1993-09-21 1993-09-21 Variable Ventilsteuerung

Publications (1)

Publication Number Publication Date
EP0644318A1 true EP0644318A1 (de) 1995-03-22

Family

ID=6498155

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94112492A Withdrawn EP0644318A1 (de) 1993-09-21 1994-08-10 Variable Ventilsteuerung

Country Status (5)

Country Link
US (1) US5509384A (ja)
EP (1) EP0644318A1 (ja)
JP (1) JPH07150911A (ja)
KR (1) KR950008914A (ja)
DE (1) DE4331977A1 (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0843079A1 (de) * 1996-11-13 1998-05-20 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Verstell-Nockenwelle, insbesondere für ventilgesteuerte Brennkraftmaschinen
EP1860286A2 (de) * 2006-05-27 2007-11-28 Mahle International GmbH Nockenwelle
WO2008075094A1 (en) * 2006-12-19 2008-06-26 Mechadyne Plc Camshaft and phaser assembly

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19637416A1 (de) * 1996-09-13 1998-03-19 Bayerische Motoren Werke Ag Verstell-Nockenwelle für eine ventilgesteuerte Hubkolbenmaschine, insbesondere Brennkraftmaschine
DE19645688C2 (de) * 1996-11-06 2002-09-26 Ina Schaeffler Kg Vorrichtung zum Verändern der Steuerzeiten einer Brennkraftmaschine
DE19726362A1 (de) * 1997-06-21 1998-12-24 Schaeffler Waelzlager Ohg Vorrichtung zum Verändern der Steuerzeiten von Gaswechselventilen einer Brennkraftmaschine
AT407282B (de) * 1997-09-19 2001-02-26 Tcg Unitech Ag Vorrichtung zur verstellung einer nockenwelle
EP1058774B1 (de) 1998-02-27 2003-05-02 Bayerische Motoren Werke Aktiengesellschaft Einrichtung zum einstellen des bewegungsverlaufs der gaswechselventile einer brennkraftmaschine
US5862783A (en) * 1998-03-12 1999-01-26 Lewis; Henry E. Variable angle camshaft
DE19908286B4 (de) * 1999-02-26 2007-03-01 Dr.Ing.H.C. F. Porsche Ag Variable Ventilsteuerung für Brennkraftmaschinen
DE10052811A1 (de) * 2000-10-25 2002-05-08 Ina Schaeffler Kg Variabler Ventiltrieb zur Laststeuerung einer fremdgezündeten Brennkraftmaschine
US6883479B2 (en) * 2002-11-04 2005-04-26 Borgwarner Inc. VCT phaser having an electromagnetic lock system for shift and lock operation
JP4616225B2 (ja) * 2006-09-12 2011-01-19 本田技研工業株式会社 内燃機関の動弁装置
JP5312152B2 (ja) * 2009-03-31 2013-10-09 本田技研工業株式会社 エンジンの可変動弁装置
JP5312153B2 (ja) * 2009-03-31 2013-10-09 本田技研工業株式会社 エンジンの可変動弁装置
DE102009037268B3 (de) 2009-08-10 2011-04-07 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Variabler Ventiltrieb für Brennkraftmaschinen zur Betätigung von Gaswechselventilen
DE102009037270B4 (de) 2009-08-10 2011-04-07 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Ventiltrieb für Brennkraftmaschinen zur Betätigung von Gaswechselventilen
DE102009037269B4 (de) 2009-08-10 2011-06-01 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Ventiltrieb für Verbrennungskraftmaschinen zur Betätigung von Gaswechselventilen
US8683965B2 (en) * 2011-05-10 2014-04-01 Gm Global Technology Operations, Llc Engine assembly including camshaft actuator
JP6248876B2 (ja) * 2014-09-17 2017-12-20 スズキ株式会社 エンジンの動弁装置
JP5994875B2 (ja) * 2015-02-02 2016-09-21 スズキ株式会社 エンジンの動弁装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2921645A1 (de) * 1979-05-28 1980-12-11 Karl Lehr Nockenwelle mit veraenderbaren steuerzeiten waehrend des betriebes
JPS59183009A (ja) * 1983-03-31 1984-10-18 Suzuki Motor Co Ltd ４サイクルエンジンのバルブタイミング可変装置
JPH01271606A (ja) * 1988-04-22 1989-10-30 Suzuki Motor Co Ltd バルブタイミング可変装置
FR2644543A1 (ja) * 1989-03-17 1990-09-21 Renault

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2888837A (en) * 1957-02-28 1959-06-02 Carl S Hellmann Adjustable cam mechanism
SE423829B (sv) * 1980-09-29 1982-06-07 Hedelin Lars G B Kamanordning med roterbart kamorgan, vars form er variabel
US4771742A (en) * 1986-02-19 1988-09-20 Clemson University Method for continuous camlobe phasing
JPH01224407A (ja) * 1988-03-03 1989-09-07 Kichisaburo Komoritani ツインカムエンジンの可変バルブ作動角装置
DE4026480C2 (de) * 1989-08-31 1998-07-23 Volkswagen Ag Nockenwelle, insbesondere für Ladungswechselventile einer Brennkraftmaschine, mit zumindest einem Schwenknocken
DE3934848A1 (de) * 1989-10-19 1991-04-25 Ingelheim Peter Graf Von In zwei und mehr groessen separat mit nur einem regelorgan verstellbare nockenwelle
DE3937628A1 (de) * 1989-11-11 1991-05-16 Audi Ag Antriebsvorrichtung fuer eine im zylinderkopf einer brennkraftmaschine gelagerten nockenwelle
US5136887A (en) * 1990-05-29 1992-08-11 Clemson University Variable valve actuating apparatus
JP3422528B2 (ja) * 1992-08-17 2003-06-30 フオルクスワーゲン・アクチエンゲゼルシヤフト 軸に限定揺動可能に支持された少なくとも１個のカムを有するカム軸装置
US5253622A (en) * 1993-02-17 1993-10-19 Bornstein Motor Company, Inc. Cam phase change mechanism

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2921645A1 (de) * 1979-05-28 1980-12-11 Karl Lehr Nockenwelle mit veraenderbaren steuerzeiten waehrend des betriebes
JPS59183009A (ja) * 1983-03-31 1984-10-18 Suzuki Motor Co Ltd ４サイクルエンジンのバルブタイミング可変装置
JPH01271606A (ja) * 1988-04-22 1989-10-30 Suzuki Motor Co Ltd バルブタイミング可変装置
FR2644543A1 (ja) * 1989-03-17 1990-09-21 Renault

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 14, no. 39 (M - 924) 24 January 1990 (1990-01-24) *
PATENT ABSTRACTS OF JAPAN vol. 9, no. 42 (M - 359) 22 February 1985 (1985-02-22) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0843079A1 (de) * 1996-11-13 1998-05-20 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Verstell-Nockenwelle, insbesondere für ventilgesteuerte Brennkraftmaschinen
EP1860286A2 (de) * 2006-05-27 2007-11-28 Mahle International GmbH Nockenwelle
EP1860286A3 (de) * 2006-05-27 2008-05-21 Mahle International GmbH Nockenwelle
WO2008075094A1 (en) * 2006-12-19 2008-06-26 Mechadyne Plc Camshaft and phaser assembly

Also Published As

Publication number Publication date
KR950008914A (ko) 1995-04-19
JPH07150911A (ja) 1995-06-13
US5509384A (en) 1996-04-23
DE4331977A1 (de) 1995-03-23

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