WO1988008918A1 - Procede et dispositif de reglage d'arbres a cames - Google Patents

Procede et dispositif de reglage d'arbres a cames Download PDF

Info

Publication number
WO1988008918A1
WO1988008918A1 PCT/SE1988/000241 SE8800241W WO8808918A1 WO 1988008918 A1 WO1988008918 A1 WO 1988008918A1 SE 8800241 W SE8800241 W SE 8800241W WO 8808918 A1 WO8808918 A1 WO 8808918A1
Authority
WO
WIPO (PCT)
Prior art keywords
shafts
shaft
wheels
camshafts
transmission
Prior art date
Application number
PCT/SE1988/000241
Other languages
English (en)
Inventor
Bernt Ejbyfeldt
Original Assignee
Ab Volvo
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 Ab Volvo filed Critical Ab Volvo
Priority to DE8888904695T priority Critical patent/DE3875123T2/de
Priority to AT88904695T priority patent/ATE81186T1/de
Publication of WO1988008918A1 publication Critical patent/WO1988008918A1/fr

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
    • F01L1/02—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
    • F01L1/02—Valve 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
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F01L1/053—Camshafts overhead type
    • F01L2001/0537—Double overhead camshafts [DOHC]
    • 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
    • F01L2303/00—Manufacturing of components used in valve arrangements
    • F01L2303/01—Tools for producing, mounting or adjusting, e.g. some part of the distribution
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/06—Endless member is a belt
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/18—DOHC [Double overhead camshaft]

Definitions

  • the present invention relates to a method, where shafts are driven via a transmission by a drive shaft, for setting the rotational position of the shafts in relation to that of the drive shaft.
  • the method is particularly intended for applying to the setting of camshafts.
  • a further disadvan ⁇ tage is that the belts which are mounted on the positioned drive wheels have relatively large intrinsic error toleran ⁇ ces, which affects the total error to a large degree so that an exact setting is difficult to achieve.
  • the object of the invention is to achieve a method of cam ⁇ shaft setting which does not have the mentioned disadvan ⁇ tages, and an apparatus for carrying out the method.
  • the error tolerances can be reduced, compared with the use of keyways and the like on the transmission wheels and the co-acting markings on the cylinder block or crankcase, and the use of tools results in that errors due to working by eye are elimina ⁇ ted, thus permitting the setting accuracy to increase by more than what is involved in solely the decrease of manu ⁇ facturing tolerances.
  • Fig. 1 is a view from the front and partially in cross-sec ⁇ tion of an embodiment of the apparatus in accordance with the invention
  • Fig. 2 is a view from the rear and partly in cross-section of the apparatus in Fig. 1;
  • Figs. 3 and -4 illustrate a tool for the angular setting of camshafts in an engine having dual camshafts.
  • FIG. 1 A conventional engine is illustrated in Fig. 1, as seen from the front.
  • the crankshaft has a transmission wheel 1 which, when the engine is in operation, drives two cam ⁇ shafts via a toothed belt 2 by co-action with their trans ⁇ mission wheels 3 , ⁇ "
  • the belt 2 further runs over a jockey pulley 5 and over a hydraulic belt tightener 6, which auto ⁇ matically ensures that correct belt tension is maintained.
  • the transmission wheels 3 and i. are fixed to the camshafts by a suitable type of releasable frictional joint so that the wheels are readily made rotatable relative the respec ⁇ tive shaft.
  • the basic concept of the invention is thus enabled, namely of utilizing machined surfaces on the shafts for achieving a more accurate setting.
  • an abutment 7 on the rear counterweight 8 of the crankshaft for setting the angular position of the crankshaft.
  • this abutment is illustrated as being in engagement with a tool 9, which is inserted in a bore in the crankcase.
  • crankshaft 1 other surfaces of a crankshaft can be utilized together with a complemental tool for setting the crankshaft 1 in a welldefined angular position.
  • the abutment on the rear counterweight of the crankshaft is a particularly suitable surface, since this also constitutes a reference surface in the production of the crankshaft.
  • the engine to which the invention is applied in the embodiment example has dual camshafts 10,11.
  • the same principle can be used for the camshafts as for the crankshafts, for their indivi ⁇ dual setting, e.g. by allowing a cam surface on the cam ⁇ shaft to co-act with a complemental tool inserted in an opening in the cylinder block, a combination tool 12 is preferably used for simultaneously setting the angular position of both camshafts 10, 11, as indicated in Fig. 2.
  • the combination tool 12 is shown to a larger scale in Figs. 3 and , and principally comprises two levers 13, 14 with rectangular cross-section, the opposing end portions of the levers being unrotatably connectable to the rear ends of the respective camshafts 8,11, the other end portions of these levers engaging flat against each other in the set position of the camshafts, whereby a well defined angular position of the latter is achieved.
  • the un-rotatable connection between camshaft end and lever can be achieved by the camshaft end being provided with a transverse slot, which co-acts with a complemental transverse projection 16 arranged on the corresponding lever end portion and is screwed into a thread in the camshaft end for fixing the lever axially.
  • the camshafts can be locked in their set positions with the aid of a nut 18 screwed onto a bolt 17 projecting out from the lever 14 and accommodated in a hole in the lever 13.
  • the transmission wheels 3 and 4 are rigidly connected to their respective shafts and the belts are tensioned.
  • the first step of the method is to loosen the respective friction joint on the camshafts so that these can be turned relative the transmission wheels.
  • the angular positions of the camshafts are then set by the levers 13 » 1*4 being taken into engagement against each other as illustrated in Fig. 2 by full lines, and the levers are locked in this position with the aid of the nut 18.
  • the crankshaft is then turned to the position illustrated in Fig. 1 with the abutment 7 in engagement against the tool 9. While maintaining the set position of the crankshaft the friction joints between transmission wheels and shafts are then tightened, and the tools 9 and 12 are removed.
  • the camshaft setting is thus completed.
  • the crankshaft transmission wheel 1 does not need to be rotatable relative the crankshaft, since the rotation of wheels 3, -4 caused by this wheel do not affect the setting of the camshafts.
  • setting by eye is completely avoided in the inventive method, and the accura ⁇ cy will be solely dependent on the manufacturing tolerances for the machined setting surfaces on the shafts and for the tools, and it is therefore possible to achieve very high setting accuracy.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Friction Gearing (AREA)
  • Paper (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)

Abstract

Dans le procédé et l'appareil décrits, des arbres sont commandés via une transmission par un arbre de commande, de façon à régler la position de rotation des arbres commandés par rapport à celle de l'arbre de commande, la transmission comportant des roues d'entraînement connectées aux arbres correspondants. Selon la présente invention, la connexion entre les roues d'entraînement (1, 2, 4) et les arbres est désengagée, les organes assurant cette connexion, qui sont de préférence constitués par des joints à friction, permettant le blocage des roues par rapport aux arbres dans une position angulaire désirée de sorte que l'arbre correspondant peut être amené à tourner par rapport à sa roue d'entraînement, permettant ainsi à l'arbre correspondant de tourner jusqu'à une position d'arrêt prédéterminée, ce qui est obtenu par un outil (9) amené à agir conjointement avec une surface usinée bien définie (7) de l'arbre d'une façon prédéterminée, la roue d'entraînement correspondante étant connectée à son arbre après que chaque arbre ait effectué une rotation jusqu'à la position d'arrêt.
PCT/SE1988/000241 1987-05-13 1988-05-10 Procede et dispositif de reglage d'arbres a cames WO1988008918A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE8888904695T DE3875123T2 (de) 1987-05-13 1988-05-10 Vorrichtung und verfahren zur regelung von nokkenwellen.
AT88904695T ATE81186T1 (de) 1987-05-13 1988-05-10 Vorrichtung und verfahren zur regelung von nokkenwellen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8701959A SE458137B (sv) 1987-05-13 1987-05-13 Foerfarande och anordning vid en bilmotor med dubbla kamaxlar
SE8701959-2 1987-05-13

Publications (1)

Publication Number Publication Date
WO1988008918A1 true WO1988008918A1 (fr) 1988-11-17

Family

ID=20368494

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1988/000241 WO1988008918A1 (fr) 1987-05-13 1988-05-10 Procede et dispositif de reglage d'arbres a cames

Country Status (6)

Country Link
EP (1) EP0417086B1 (fr)
JP (1) JPH02503459A (fr)
AT (1) ATE81186T1 (fr)
DE (1) DE3875123T2 (fr)
SE (1) SE458137B (fr)
WO (1) WO1988008918A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0362687A1 (fr) * 1988-09-28 1990-04-11 Klöckner-Humboldt-Deutz Aktiengesellschaft Dispositif pour l'ajustage du calage de la distribution d'un moteur à combustion interne dont l'arbre à cames et entraîné par courroie, chaîne ou engrenage
EP1300549A3 (fr) * 2001-10-05 2003-07-09 Audi Ag Procédé et outil pour l'ajustage des arbres à came en phase
FR2855553A1 (fr) * 2003-06-02 2004-12-03 Inst Francais Du Petrole Moteur a combustion interne a culasse mobile, notamment moteur pour essais
WO2004106716A1 (fr) * 2003-05-30 2004-12-09 International Engines South America Ltda. Moteur a combustion interne et carter-moteur
FR2897400A1 (fr) * 2006-02-10 2007-08-17 Renault Sas Piece de blocage d'un volant moteur

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1262670B (de) * 1965-01-04 1968-03-07 Renault Brennkraftmaschine mit obenliegender Nockenwelle
DE3029858A1 (de) * 1979-08-08 1981-02-19 Denzel Kraftfahrzeug Wolfgang Nockenwellenantrieb fuer brennkraftmaschinen
DE3131278A1 (de) * 1981-08-07 1983-02-24 Bayerische Motoren Werke AG, 8000 München Verfahren und vorrichtung zum einstellen der ventilsteuerung einer hubkolben-brennkraftmaschine, insbes. eines diesel-motors

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1262670B (de) * 1965-01-04 1968-03-07 Renault Brennkraftmaschine mit obenliegender Nockenwelle
DE3029858A1 (de) * 1979-08-08 1981-02-19 Denzel Kraftfahrzeug Wolfgang Nockenwellenantrieb fuer brennkraftmaschinen
DE3131278A1 (de) * 1981-08-07 1983-02-24 Bayerische Motoren Werke AG, 8000 München Verfahren und vorrichtung zum einstellen der ventilsteuerung einer hubkolben-brennkraftmaschine, insbes. eines diesel-motors

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0362687A1 (fr) * 1988-09-28 1990-04-11 Klöckner-Humboldt-Deutz Aktiengesellschaft Dispositif pour l'ajustage du calage de la distribution d'un moteur à combustion interne dont l'arbre à cames et entraîné par courroie, chaîne ou engrenage
EP1300549A3 (fr) * 2001-10-05 2003-07-09 Audi Ag Procédé et outil pour l'ajustage des arbres à came en phase
WO2004106716A1 (fr) * 2003-05-30 2004-12-09 International Engines South America Ltda. Moteur a combustion interne et carter-moteur
CN100432393C (zh) * 2003-05-30 2008-11-12 国际引擎南美有限公司 内燃机
FR2855553A1 (fr) * 2003-06-02 2004-12-03 Inst Francais Du Petrole Moteur a combustion interne a culasse mobile, notamment moteur pour essais
FR2897400A1 (fr) * 2006-02-10 2007-08-17 Renault Sas Piece de blocage d'un volant moteur

Also Published As

Publication number Publication date
DE3875123D1 (de) 1992-11-05
SE8701959D0 (sv) 1987-05-13
JPH02503459A (ja) 1990-10-18
SE8701959L (sv) 1988-11-14
DE3875123T2 (de) 1993-02-18
EP0417086A1 (fr) 1991-03-20
SE458137B (sv) 1989-02-27
ATE81186T1 (de) 1992-10-15
EP0417086B1 (fr) 1992-09-30

Similar Documents

Publication Publication Date Title
CA2504433C (fr) Poignee a levier avec verrou integre
US7077036B1 (en) Timing gear pliers
EP1182011A2 (fr) Dispositif de blocage
US4570334A (en) Apparatus for adjusting the valve control of a reciprocating piston internal combustion engine
DE2655102A1 (de) Kettentrieb, insbesondere fuer den steuerantrieb von brennkraftmaschinen
DE10214097A1 (de) Vorrichtung zum Steuern der Ventilzeitabstimmung eines Verbrennungsmotors
WO1988008918A1 (fr) Procede et dispositif de reglage d'arbres a cames
US5755029A (en) Double overhead camshaft alignment method
GB2392711A (en) Device for holding a rotary element fixed relative to a body, eg for preventing rotation of an i.c. engine camshaft or fuel injection pump during servicing
US5845397A (en) Static timing method for heavy duty diesel engines
US6532923B2 (en) Adjustable cam sprocket
DE102016101264B3 (de) Nockenwelleneinstellwerkzeug
US4826469A (en) Belt adjuster
JPS6055683B2 (ja) エンジンのタイミングベルト張力調整方法
EP0767326B1 (fr) Méthode et dispositif pour l'ajustement du jeu dans un train d'engrenage
DE3926430A1 (de) Verfahren und vorrichtung zum phasenrichtigen einstellen von nockenwellen
US4684357A (en) Timing chain retractor and lock
US4337747A (en) Fuel injection pumping apparatus
US5961294A (en) Method for attaching a fuel injection device to an engine and fuel injection device
EP0532377A1 (fr) Dispositif de positionnement d'un arbre à cames de moteur à combustion interne et arbre à cames utilisant ce dispositif
US5957795A (en) Accessory drive belt tensioner for automotive engine
DE10138832C1 (de) Vorrichtung zur Befestigung einer Nockenwellen-Verstelleinrichtung an einer Nockenwelle einer Brennkraftmaschine
JP2980750B2 (ja) 車両用動弁装置におけるタイミング帯の弛み防止構造
DE102008037354A1 (de) Motor und Verfahren zur Montage eines Motors
DE19709656A1 (de) Vorrichtung zum Einstellen der Basisposition einer Nockenwellen-Verstelleinrichtung an einer Brennkraftmaschine

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LU NL SE

WWE Wipo information: entry into national phase

Ref document number: 1988904695

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1988904695

Country of ref document: EP

WWG Wipo information: grant in national office

Ref document number: 1988904695

Country of ref document: EP