EP0352580A1 - Dispositif d'actionnement de soupapes d'un moteur à combustion interne - Google Patents

Dispositif d'actionnement de soupapes d'un moteur à combustion interne Download PDF

Info

Publication number
EP0352580A1
EP0352580A1 EP89113026A EP89113026A EP0352580A1 EP 0352580 A1 EP0352580 A1 EP 0352580A1 EP 89113026 A EP89113026 A EP 89113026A EP 89113026 A EP89113026 A EP 89113026A EP 0352580 A1 EP0352580 A1 EP 0352580A1
Authority
EP
European Patent Office
Prior art keywords
transmission lever
cam
transmission
valve
lever
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
Application number
EP89113026A
Other languages
German (de)
English (en)
Other versions
EP0352580B1 (fr
Inventor
Reinhard Dipl.-Ing. Häfner
Hans-Jürgen Dipl.-Ing. Schacht
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.)
Caterpillar Motoren GmbH and Co KG
Original Assignee
Krupp Mak Maschinenbau GmbH
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 Krupp Mak Maschinenbau GmbH filed Critical Krupp Mak Maschinenbau GmbH
Publication of EP0352580A1 publication Critical patent/EP0352580A1/fr
Application granted granted Critical
Publication of EP0352580B1 publication Critical patent/EP0352580B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0063—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of cam contact point by displacing an intermediate lever or wedge-shaped intermediate element, e.g. Tourtelot
    • 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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction

Definitions

  • the invention relates to an actuating device according to the preamble of claim 1.
  • variable valve mechanism for internal combustion engines which has a central cam with a shorter stroke than a pair of side cams. These cams are designed for high and low speeds in such a way that the cams can be switched over by means of a lever device, whereby either the valve lift and / or the valve opening time is to be changed. It is also known from Brown-Boveri Communication 64 (1977) No. 4, pages 219 to 226 to change the inlet closing time of a valve of an internal combustion engine according to the Miller system on its own.
  • the object of the invention is to provide an actuating device for valves of an internal combustion engine, with which the opening and closing times of a valve which are independent of one another can be controlled.
  • the main advantages achieved with the invention are that by a structurally simple actuating device between the valve and the camshaft, a shift in the opening times and the Valves are closed during a piston stroke. These closing times can be selected independently of one another in accordance with the cam shape, since the transmission levers each work together with an assigned cam, but carry out a common movement or opening and closing movement from a determinable time. This independence of the movement of the levers on the cams allows, for example, the opening and closing times of the valve to be brought forward or set later.
  • the valve train 1 of an internal combustion engine essentially comprises an actuating device consisting of two transmission levers 2 and 3, which on the one hand cooperates with cams 4 and on the other hand with the valve or a bumper via a tappet 5.
  • Each valve train 1 has at least two transmission levers 2 and 3 which can be actuated by differently designed cams 4a and 4b. These are arranged one above the other and held pivotably in bearings 6 and 7.
  • the levers 2 and 3 are connected to the cams 4a and 4b via rollers 8 and 9.
  • the first transmission lever 2 on top controls, separately from the second transmission lever 3 on the bottom, an opening process overlaid by a control process by the second transmission lever 3, which ends in a closing process.
  • the first transmission lever 2 is detached from its cams 4a via a pressure bearing 10 on the second transmission lever 3 on a pressure piece 11 during the superimposed control process.
  • This has a contour similar to an involute and is supported in a hard thrust bearing 12 of the first transmission lever 2, which is designed with the narrowest possible lubrication radius.
  • the contours of the pressure piece 11 and of the thrust bearing 12 are selected so that they allow the second transmission lever 3 to be adjusted without changing a valve stroke.
  • the two transmission levers 2 and 3 preferably have the same lever lengths and are pretensioned and supported on the respective cams 4a and 4b, for which purpose the first overhead transmission lever 2 is under the tension of a valve spring 13.
  • the second transmission lever 3 located below is under the tension of a longitudinally arranged torsion spring 14, which tries to rotate the second transmission lever 3 against the first transmission lever 2.
  • transmission levers 2 and 3 each consisting of a rocker 20, 21 and a rod 25, 26.
  • the rockers 20, 21 are held in the plunger 5 so as to be pivotable about an axis 22 and can only be displaced in a forced manner in the adjustment direction 31 via a transverse slot 30.
  • Rods 25, 26 are each articulated on the rockers 20, 21 via axles 23, 24, which are supported at the ends on separate eccentrics 27, 28 and which are arranged with shafts which can be rotated by means of hand levers 34, so that when the shaft is turned, both eccentrics 27, 28 be adjusted together.
  • a valve lash adjuster 37 is provided so that no adjustment of the valve clearance takes place when the rollers 8 and 9 are adjusted via the eccentrics 27, 28.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
EP89113026A 1988-07-28 1989-07-15 Dispositif d'actionnement de soupapes d'un moteur à combustion interne Expired - Lifetime EP0352580B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3825567 1988-07-28
DE3825567A DE3825567A1 (de) 1988-07-28 1988-07-28 Betaetigungsvorrichtung fuer ventile einer brennkraftmaschine

Publications (2)

Publication Number Publication Date
EP0352580A1 true EP0352580A1 (fr) 1990-01-31
EP0352580B1 EP0352580B1 (fr) 1992-06-03

Family

ID=6359699

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89113026A Expired - Lifetime EP0352580B1 (fr) 1988-07-28 1989-07-15 Dispositif d'actionnement de soupapes d'un moteur à combustion interne

Country Status (3)

Country Link
EP (1) EP0352580B1 (fr)
DE (2) DE3825567A1 (fr)
FI (1) FI893569A7 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1712748A1 (fr) * 2005-01-12 2006-10-18 Eaton S.R.L. Culbuteur permettant deux modes de distribution avec une came unique
CN102575536A (zh) * 2009-09-16 2012-07-11 蒂森克虏伯普里斯塔技术中心股份公司 具有可变化的阀门开启时长的凸轮轴
AT512877A1 (de) * 2012-04-26 2013-11-15 Pges Guenther Herdin Tech Buero Gmbh Ventilsteuermechanismus

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4138527A1 (de) * 1991-11-23 1993-05-27 Volker Deuschle Variable ventilsteuerung fuer brennkraftmaschine
FI101165B (fi) * 1994-07-01 1998-04-30 Waertsilae Nsd Oy Ab Järjestely polttomoottorin venttiilin ajoituksen säätämiseksi
DE10341702A1 (de) * 2003-09-10 2005-04-28 Bayerische Motoren Werke Ag Ventiltrieb für eine Hubkolben-Brennkraftmaschine
AT522750A1 (de) * 2019-07-04 2021-01-15 Avl List Gmbh Variable ventiltriebvorrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR614057A (fr) * 1925-04-06 1926-12-06 Sunbeam Motor Car Co Ltd Perfectionnements aux mécanismes de commande de soupape
GB812303A (en) * 1956-10-31 1959-04-22 Frederic Barnes Waldron Improvements in valve operating mechanism for internal combustion engines
FR1342703A (fr) * 1963-01-10 1963-11-08 Sulzer Ag Commande de soupape pour moteurs à combustion interne à pistons
GB947147A (en) * 1959-01-30 1964-01-22 Miller Ralph Improvements in or relating to valve operating mechanisms for use in internal combustion engines
DE2456752A1 (de) * 1974-11-30 1976-08-12 Kloeckner Humboldt Deutz Ag Ventilsteuerung fuer hubkolbenbrennkraftmaschinen
DE3521539A1 (de) * 1985-06-15 1986-12-18 Erich 7066 Baltmannsweiler Schmid Vorrichtung fuer eine nockengesteuerte hubkolbenmaschine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR614057A (fr) * 1925-04-06 1926-12-06 Sunbeam Motor Car Co Ltd Perfectionnements aux mécanismes de commande de soupape
GB812303A (en) * 1956-10-31 1959-04-22 Frederic Barnes Waldron Improvements in valve operating mechanism for internal combustion engines
GB947147A (en) * 1959-01-30 1964-01-22 Miller Ralph Improvements in or relating to valve operating mechanisms for use in internal combustion engines
FR1342703A (fr) * 1963-01-10 1963-11-08 Sulzer Ag Commande de soupape pour moteurs à combustion interne à pistons
DE2456752A1 (de) * 1974-11-30 1976-08-12 Kloeckner Humboldt Deutz Ag Ventilsteuerung fuer hubkolbenbrennkraftmaschinen
DE3521539A1 (de) * 1985-06-15 1986-12-18 Erich 7066 Baltmannsweiler Schmid Vorrichtung fuer eine nockengesteuerte hubkolbenmaschine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1712748A1 (fr) * 2005-01-12 2006-10-18 Eaton S.R.L. Culbuteur permettant deux modes de distribution avec une came unique
WO2006090292A3 (fr) * 2005-01-12 2006-11-09 Eaton Corp Longueur d'evenement de soupape double a bossage unique
CN102575536A (zh) * 2009-09-16 2012-07-11 蒂森克虏伯普里斯塔技术中心股份公司 具有可变化的阀门开启时长的凸轮轴
CN102575536B (zh) * 2009-09-16 2014-11-05 蒂森克虏伯普里斯塔技术中心股份公司 具有可变化的阀门开启时长的凸轮轴
AT512877A1 (de) * 2012-04-26 2013-11-15 Pges Guenther Herdin Tech Buero Gmbh Ventilsteuermechanismus
AT512877B1 (de) * 2012-04-26 2014-02-15 Pges Guenther Herdin Tech Buero Gmbh Ventilsteuermechanismus

Also Published As

Publication number Publication date
DE3825567A1 (de) 1990-02-01
FI893569A0 (fi) 1989-07-26
EP0352580B1 (fr) 1992-06-03
FI893569L (fi) 1990-01-29
FI893569A7 (fi) 1990-01-29
DE58901576D1 (de) 1992-07-09

Similar Documents

Publication Publication Date Title
EP0659232B1 (fr) Procede et dispositif de commande variable d'une soupape d'un moteur a combustion interne
DE19960742B4 (de) Variabler Ventiltrieb, vorzugsweise für Verbrennungsmotoren
DE10314683B4 (de) Variable Ventilhubsteuerung für einen Verbrennungsmotor mit untenliegender Nockenwelle
EP0761935B1 (fr) Entraínement de soupape variable, en particulier pour moteurs à combustion interne
DE4301453C2 (de) Variable Ventilsteuerung von Brennkraftmaschinen
DE3022188C2 (fr)
DE19509604A1 (de) Ventiltrieb einer Brennkraftmaschine
DE3445951A1 (de) Ventilbetrieb-stoppvorrichtung
DE19640520A1 (de) Ventiltrieb und Zylinderkopf einer Brennkraftmaschine
EP1348068A1 (fr) Mecanisme de distribution mecanique entierement variable pour moteur alternatif
EP1853797B1 (fr) Commande mecanique variable de soupapes d'un moteur a combustion interne
DE10228022A1 (de) Ventilhubvorrichtung zur Hubverstellung der Gaswechselventile einer Verbrennungskraftmaschine
DE4205230A1 (de) Ventilbetaetigungsmechanismus fuer eine brennkraftmaschine
DE10261304B4 (de) Ventilhubvorrichtung zur variablen Ventilsteuerung der Gaswechselventile einer Verbrennungskraftmaschine
EP0352580B1 (fr) Dispositif d'actionnement de soupapes d'un moteur à combustion interne
DE4232848A1 (de) Ventilbetätigungsmechanismus
DE69508922T2 (de) Nockenvorrichtung
DE3041864A1 (de) Vorrichtung zum verschieben der steuerzeit eines gaswechselventils einer brennkraftmaschine
DE102005010182B4 (de) Variabel mechanische Ventilsteuerung einer Brennkraftmaschine
DE19604943A1 (de) Vorrichtung zum Betreiben von Ventilen einer Brennkraftmaschine
DE102007003967A1 (de) Ventiltrieb einer Brennkraftmaschine
DE102004035005A1 (de) Ventiltrieb einer Brennkraftmaschine
DE10031783A1 (de) Variabler Ventiltrieb mit einer indirekt von einem Nocken über einen Schwing- oder Kipphebel bewegten Ventilanordnung, vorzugsweise für Verbrennungsmotoren
AT500600B1 (de) Brennkraftmaschine mit innerer verbrennung
DE10303128A1 (de) Vollvariabler mechanischer Ventiltrieb für eine Kolbenbrennkraftmaschine mit justierbarem Ventilspielausgleich

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT NL

17P Request for examination filed

Effective date: 19900110

17Q First examination report despatched

Effective date: 19910426

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT NL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 19920603

Ref country code: GB

Effective date: 19920603

Ref country code: NL

Effective date: 19920603

REF Corresponds to:

Ref document number: 58901576

Country of ref document: DE

Date of ref document: 19920709

ET Fr: translation filed
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19950609

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19970328

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20080731

Year of fee payment: 20