EP0071972B1 - Dispositif et procédé de réglage de la commande des soupapes d'un moteur à combustion interne, spécialement du type diesel - Google Patents

Dispositif et procédé de réglage de la commande des soupapes d'un moteur à combustion interne, spécialement du type diesel Download PDF

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Publication number
EP0071972B1
EP0071972B1 EP82107024A EP82107024A EP0071972B1 EP 0071972 B1 EP0071972 B1 EP 0071972B1 EP 82107024 A EP82107024 A EP 82107024A EP 82107024 A EP82107024 A EP 82107024A EP 0071972 B1 EP0071972 B1 EP 0071972B1
Authority
EP
European Patent Office
Prior art keywords
camshaft
crankshaft
timing
transmission member
section
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.)
Expired
Application number
EP82107024A
Other languages
German (de)
English (en)
Other versions
EP0071972A3 (en
EP0071972A2 (fr
Inventor
Hans-Harald Dr. Ing. Melzer
Joachim Hahn
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke 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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Priority to AT82107024T priority Critical patent/ATE16036T1/de
Publication of EP0071972A2 publication Critical patent/EP0071972A2/fr
Publication of EP0071972A3 publication Critical patent/EP0071972A3/de
Application granted granted Critical
Publication of EP0071972B1 publication Critical patent/EP0071972B1/fr
Expired 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
    • F01L1/02—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
    • 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
    • F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
    • 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
    • F02B2275/20—SOHC [Single overhead camshaft]
    • 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
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49231—I.C. [internal combustion] engine making
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49298—Poppet or I.C. engine valve or valve seat making
    • Y10T29/49302—Repairing, converting, servicing or salvaging
    • 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
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble

Definitions

  • the invention relates to a method and a device for adjusting the valve control of a reciprocating piston internal combustion engine according to the preamble of claim 1.
  • the camshaft For adjusting the control in diesel engines, it is known to provide the camshaft at the end facing away from the drive wheel with a slot directed in the longitudinal direction of the camshaft for positive engagement of the device.
  • the arrangement of the slot serving as a square for the device is such that the slot is parallel to the plane of the separating surface of the control chamber housing from the control chamber cover for adjusting the camshaft with the cam rotational position assigned to the reference cylinder.
  • the device is formed from a section of a flat material and interacts via its broad sides with the slot or the square.
  • the device When the device is engaged on the camshaft, there is a gap between the separating surface of the control chamber housing and the adjacent broad side of the device.
  • the device For exact adjustment of the camshaft, the device must be aligned parallel to the parting surface with the interposition of feeler gauges on both sides of the camshaft (VAG repair guide / diesel engine, January '80 edition, page 9).
  • the invention is based on the object of simplifying the method for setting the control in a reciprocating piston internal combustion engine and for this purpose specifying a device with which a maximum degree of setting accuracy is achieved.
  • the advantage of the invention lies essentially in the fact that in the case of a device which can be positively engaged with the camshaft in the direction transverse to the plane of the separating surface (s), the latter rests directly on the separating surface and thus, apart from cleaning the separating surface in the area of the overlying device, no further manipulations are required to align the device.
  • the mechanical locking means that the crankshaft is held exactly in the TDC position, which means that the transmission element acts as an auxiliary device when the tensioning roller acts while the drive wheel is being screwed to the camshaft, and an additional counter-holder acting on the drive wheel is not required.
  • the key cross-section formed as a square on the outer circumference of the camshaft can expediently be arranged near the screwing point of the camshaft and drive wheel and can also be produced inexpensively by two parallel surfaces on a thrust collar of the camshaft.
  • this double square in conjunction with the device arranged according to the invention braced against separating surfaces ensures a maximum degree of setting accuracy in the control of a reciprocating piston internal combustion engine, in particular a highly compressed diesel engine with TDC minimal tolerances between the piston crown and valve plates.
  • a drive wheel 4 can be connected to a camshaft 1 via a cone 2 and a central screw 3.
  • the drive wheel 4 is in drive connection via a toothed belt 5 with a wheel 6 on the crankshaft 7. 8 with an injection pump wheel and 9 with a tensioning roller.
  • Another wheel 10 of an auxiliary unit is driven via the multiple V-Prof 11 on the outside of the toothed belt 5.
  • the piston 13 is brought into TDC in the reference cylinder I of the diesel engine 12. In this position, the crankshaft 7 is secured against rotation by a flywheel 14 against the crankcase 16 by means of a setting pin 15.
  • the device 23 comprises an element 24 formed from flat material and arranged in an edgewise manner, with stop surfaces 28 and 28 'formed in both end regions 25 and 26 on a long side 27 and a U-shaped recess 29 arranged in between on the long side 27 the recess 29 is brought into engagement with the square 22 arranged transversely to the plane of the separating surfaces 30, 30 'of the control chamber housing 31 on the camshaft 1. Due to the square 22 arranged transversely to the plane of the separating surfaces 30, 30 ′ on the camshaft 1, the device 23 strikes the separating surfaces 30, 30 ′ at the end of the positive engagement with the stop surfaces 28, 28 ′, with a sufficiently deep recess 29 a clearance up to the limit of the start collar 21 is achieved.
  • the device 23 is fixed to the control housing 31 by means of a spreading device 33 which engages on clamping claws 32, 32 ′.
  • the camshaft 1 can also be kept in front of the drive wheel 4 by a corresponding angle in the direction of rotation in order to compensate for an infeed slump of the toothed belt 5.
  • This angular provision is expediently effected via the arrangement of the recess 29.
  • the toothed belt 5 is finally placed on the drive wheel 4, which is rotatably held on the cone 2 of the camshaft 1 by means of the slightly loosened central screw 3, and adjusted to the tension required during operation by means of the tensioning roller 9.
  • the drive wheel 4 is thus rotationally fixed via the toothed belt 5 and the rotationally blocked crankshaft 7 (by means of a setting pin 15) relative to the camshaft 1 which is secured against rotation by the device 23 for the final screw connection for a drive-proof frictional engagement with the cone 2 of the camshaft 1.
  • the square is an example of a key cross-section formed on the inside or outside of the camshaft.
  • the basic setting of the valve control can also be checked.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Valve Device For Special Equipments (AREA)

Claims (3)

1. Procédé de réglage de la commande des soupages d'un moteur à combustion interne à pistons alternatifs, notamment d'un moteur Diesel,
avec un arbre à came (1) entraîné à partir du vilebrequin (7) par l'intermédiaire d'un organe de transmission flexible (5) sans fin, procédé dans lequel :
le vilebrequin (7) est disposé dans la position du point mort haut pour un cylindre de référence (1),
l'arbre à came (1) est bloqué en rotation au moyen d'un profil transversal-clé (22) en prise avec un dispositif (23) susceptible de venir en butée contre une surface de séparation (30, 30') du carter (31) de la chambre de commande,
une roue d'entraînement (4), susceptible d'être bloquée en rotation sur l'arbre à came (1) par un assemblage à friction, est maintenue mobile en rotation sur l'arbre à came (1) lors du réglage, au moyen d'une fixation par vis (3) desserrée,
procédé caractérisé en ce que :
l'arbre à came (1) et le dispositif (23) sont amenés en prise au moyen d'un profil transversal-clé (2 pans 22) disposé transversalement par rapport au plan de la surface de séparation (n) (30, 30') du carter (31) de la chambre de commande,
la roue d'entraînement (4), la fixation par vis étant desserrée, est bloquée en rotation, par rapport à l'arbre à came (1), par l'intermédiaire de l'organe de transmission (5), qui est en liaison d'entraînement avec le vilebrequin (7) et qui est tendu par un galet tendeur (9),
le vilebrequin (7) est bloqué en rotation dans la position du point mort haut (goujon de blocage 15) par rapport au carter du vilebrequin (16).
2. Procédé selon la revendication 1, caractérisé en ce que l'arbre à came (1) est maintenu, par l'intermédiaire du dispositif (23), en avance dans le sens de rotation par rapport à la roue d'entraînement (4) d'un angle correspondant à la cote de mise en place de l'organe de transmission (5).
3. Dispositif pour la mise en oeuvre du procédé selon revendication 1 ou 2, dispositif caractérisé en ce qu'il comporte :
un élément (24) en forme de poutre comportant sur un côté longitudinal (27) des surfaces de butée (28, 28') pour prendre appui sur le carter de la chambre de commande,
un profil transversal-clé (encoche en forme de U 29) disposé sur le côté longitudinal (27) de l'élément (24) pour recevoir le profil transversal-clé correspondant (2 pans 22) prévu sur l'arbre à came (1)
des moyens de fixation (32, 32' et 33) pour fixer le dispositif (23) sur le carter (31) de la chambre de commande.
EP82107024A 1981-08-07 1982-08-04 Dispositif et procédé de réglage de la commande des soupapes d'un moteur à combustion interne, spécialement du type diesel Expired EP0071972B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82107024T ATE16036T1 (de) 1981-08-07 1982-08-04 Verfahren und vorrichtung zum einstellen der ventilsteuerung einer hubkolbenbrennkraftmaschine, insbesondere eines dieselmotors.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3131278 1981-08-07
DE19813131278 DE3131278A1 (de) 1981-08-07 1981-08-07 Verfahren und vorrichtung zum einstellen der ventilsteuerung einer hubkolben-brennkraftmaschine, insbes. eines diesel-motors

Publications (3)

Publication Number Publication Date
EP0071972A2 EP0071972A2 (fr) 1983-02-16
EP0071972A3 EP0071972A3 (en) 1984-02-08
EP0071972B1 true EP0071972B1 (fr) 1985-10-09

Family

ID=6138811

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82107024A Expired EP0071972B1 (fr) 1981-08-07 1982-08-04 Dispositif et procédé de réglage de la commande des soupapes d'un moteur à combustion interne, spécialement du type diesel

Country Status (5)

Country Link
US (2) US4461062A (fr)
EP (1) EP0071972B1 (fr)
JP (1) JPS5830407A (fr)
AT (1) ATE16036T1 (fr)
DE (2) DE3131278A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
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CN104329168A (zh) * 2014-09-05 2015-02-04 朝柴动力科技（北京）有限公司 发动机一缸活塞上止点锁止机构

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JP4198323B2 (ja) * 2001-01-30 2008-12-17 三菱電機株式会社 バルブタイミング調整装置
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CN103422928A (zh) * 2013-07-18 2013-12-04 东风朝阳朝柴动力有限公司 一种柴油机正时定位的方法
DE102014104995A1 (de) * 2014-04-08 2015-10-08 Thyssenkrupp Presta Teccenter Ag Modul mit vororientierter Nockenwelle
CN103939202B (zh) * 2014-04-15 2016-06-22 蒋祖贵 一种往复旋转活塞式发动机
FR3021995B1 (fr) * 2014-06-06 2016-07-01 Peugeot Citroen Automobiles Sa Dispositif de positionnement d'un arbre a cames
CN104963760B (zh) * 2015-08-03 2017-07-28 湖州新奥利吸附材料有限公司 一种分体式内燃机的控制系统
JP6725270B2 (ja) * 2016-03-09 2020-07-15 本田技研工業株式会社 オーバーヘッドカムシャフト式エンジン

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CN104329168A (zh) * 2014-09-05 2015-02-04 朝柴动力科技（北京）有限公司 发动机一缸活塞上止点锁止机构

Also Published As

Publication number Publication date
US4461062A (en) 1984-07-24
JPS6344923B2 (fr) 1988-09-07
DE3266839D1 (en) 1985-11-14
ATE16036T1 (de) 1985-10-15
DE3131278A1 (de) 1983-02-24
EP0071972A3 (en) 1984-02-08
JPS5830407A (ja) 1983-02-22
EP0071972A2 (fr) 1983-02-16
US4570334A (en) 1986-02-18

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