EP0071972A2 - Method and device for adjusting the valve drive of an internal-combustion engine, especially a diesel engine - Google Patents

Method and device for adjusting the valve drive of an internal-combustion engine, especially a diesel engine Download PDF

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Publication number
EP0071972A2
EP0071972A2 EP82107024A EP82107024A EP0071972A2 EP 0071972 A2 EP0071972 A2 EP 0071972A2 EP 82107024 A EP82107024 A EP 82107024A EP 82107024 A EP82107024 A EP 82107024A EP 0071972 A2 EP0071972 A2 EP 0071972A2
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EP
European Patent Office
Prior art keywords
camshaft
crankshaft
transmission member
control chamber
chamber housing
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
EP82107024A
Other languages
German (de)
French (fr)
Other versions
EP0071972A3 (en
EP0071972B1 (en
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/en
Publication of EP0071972A2 publication Critical patent/EP0071972A2/en
Publication of EP0071972A3 publication Critical patent/EP0071972A3/en
Application granted granted Critical
Publication of EP0071972B1 publication Critical patent/EP0071972B1/en
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 the main claim.
  • 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 fitted with feeler gauges on both sides of the camshaft Align the cutting surface in parallel (VAG repair guide / diesel engine, January '80 edition, page 9).
  • the object of the invention is to simplify the method for setting the control in a reciprocating piston internal combustion engine and to provide a device for this purpose 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 two-edged key cross-section 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 results in a stiff double-edged element that is rigid in terms of strength, and on the other hand, elasticities in the adjusting device that are disadvantageous for the exact setting are avoided.
  • 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 profile 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.
  • the crankshaft 7 is rotationally secured against the crankcase 16 by means of a flywheel 14 using 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 with the two-sided arranged transversely to the plane of the separating surfaces 30, 30 'of the control chamber housing 31 on the camshaft 1. 22 engaged. 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 on the control housing 31 by means of a spreading device 33 engaging 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)

Abstract

An apparatus for the adjustment of the valve control of a reciprocating piston internal combustion engine with a cam shaft driven from the crankshaft by an endless, flexible transmission member, in which the cam shaft and a valve control adjustment device are brought into engagement with each other by a control member arranged transversely to the plane of the separating surface of a control space housing with a loosened threaded connection; the driving gear is nonrotatably fixed with respect to the cam shaft by way of the transmission member drivingly connected with the crankshaft and tensioned by a tensioning roller while the crankshaft is nonrotatably fixed in the top dead center position with respect to the crankcase by a locking pin.

Description

Die Erfindung bezieht sich auf ein Verfahren und eine Vorrichtung zum Einstellen der Ventilsteuerung einer Hubkolben-Brennkraftmaschine gemäß dem Oberbegriff des Hauptanspruches.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 the main claim.

Es ist zum Einstellen der Steuerung bei Dieselmotoren bekannt, die Nockenwelle an dem dem Antriebsrad abgewandten Ende mit einem in Längserstreckung der Nockenwelle gerichteten Schlitz zum formschlüssigen Eingriff der Vorrichtung zu versehen. Die Anordnung des als Zweikant für die Vorrichtung dienenden Schlitzes ist so getroffen, daß zum Einstellen der Nockenwelle mit dem Referenzzylinder zugeordneter Nockendrehlage der Schlitz parallel zur Ebene der Trennfläche des Steuerraumgehäuses zum Steuerraumdeckel ist.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.

Die Vorrichtung ist aus einem Abschnitt eines Flachmaterials gebildet und wirkt über seine Breitseiten mit dem Schlitz bzw. dem Zweikant zusammen. Bei an der Nockenwelle in Eingriff gebrachter Vorrichtung ergibt sich zwischen der Trennfläche des Steuerraumgehäuses und der benachbarten Breitseite der Vorrichtung ein Spalt. Zur exakten Einstellung der Nockenwelle ist die Vorrichtung unter Zwischenlage von Fühlerlehren beiderseits der Nockenwelle zur Trennfläche parallel auszurichten (VAG-Reparaturleitfaden/Dieselmotor, Ausgabe Januar '80, Seite 9).The device is formed from a section of a flat material and interacts via its broad sides with the slot or the square. 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. For exact adjustment of the camshaft, the device must be fitted with feeler gauges on both sides of the camshaft Align the cutting surface in parallel (VAG repair guide / diesel engine, January '80 edition, page 9).

Bei dem bekannten Einstellverfahren ist das Ausmitteln der Vorrichtung in parallele Lage durch die zusätzlichen Fühlerlehren arbeitsaufwendig, da durch die Toleranzen im Abstand der Nockenwellen-Drehachse zur Trennfläche bzw. deren Ebene verschiedene Fühlerlehren erforderlich sind. Weiter ist eine ungenaue Einstellung der Nockenwelle gegeben bei unterschiedlich weit von Mitte Nockenwelle zwischen Vorrichtung und Trennfläche angeordneten Fühlerlehren während der Verschraubung des Antriebsrades zum antriebsfesten Reibschluß mit der Nockenwelle. Da ferner bei diesem Einstellverfahren die Kurbelwelle lediglich durch übereinstimmung einer Markierung am Schwungrad mit einer Bezugsmarke am Motorgehäuse in OT-Position angeordnet ist, erscheint das bekannte Einstellverfahren durch eine weitere mögliche Fehlerquelle für die Anwendung vor allem in der Serienherstellung von Dieselmotoren wenig geeignet. Bei Dieselmotoren, vor allem mit relativ hoher Verdichtung/sind im allgemeinen zwischen dem Boden des Kolbens in OT-Stellung und den Ventiltellern im Hauptbrennraum geringe Toleranzen gegeben, so daß bei ungenauer Einstellung der Steuerung durch Aufschlagen der Ventilteller auf dem Kolbenboden ein Maschinenschaden die Folge ist.In the known setting method, the centering of the device in a parallel position by the additional feeler gauges is labor-intensive, since different feeler gauges are required due to the tolerances in the distance of the camshaft axis of rotation from the separating surface or its plane. Furthermore, there is an inaccurate setting of the camshaft with feeler gauges arranged at different distances from the center of the camshaft between the device and the separating surface during the screwing of the drive wheel for a frictional engagement with the camshaft. Furthermore, since in this setting method the crankshaft is arranged in the TDC position only by matching a mark on the flywheel with a reference mark on the engine housing, the known setting method, due to another possible source of error, appears to be of little use for the application, particularly in the series production of diesel engines. In the case of diesel engines, especially those with a relatively high compression / there are generally small tolerances between the bottom of the piston in the TDC position and the valve disks in the main combustion chamber, so that if the control is inaccurately adjusted by hitting the valve disk on the piston crown, machine damage will result .

Der Erfindung liegt die Aufgabe zugrunde, das Verfahren zum Einstellen der Steuerung bei einer Hubkolben-Brennkraftmaschine zu vereinfachen und hierfür eine Vorrichtung anzugeben, mit der ein Höchstmaß an Einstellgenauigkeit erzielt ist.The object of the invention is to simplify the method for setting the control in a reciprocating piston internal combustion engine and to provide a device for this purpose with which a maximum degree of setting accuracy is achieved.

Ausgehend von dem im Oberbegriff des Hauptanspruches berücksichtigten Stand der Technik ist diese Aufgabe erfindungsgemäß mit den kennzeichnenden Merkmalen des Hauptanspruches gelöst.Starting from the prior art taken into account in the preamble of the main claim, this object is achieved according to the invention with the characterizing features of the main claim.

Der Vorteil der Erfindung liegt wesentlich darin, daß bei einer in Richtung quer zur Ebene der Trennfläche (n) mit der Nockenwelle formschlüssig in Eingriff bringbaren Vorrichtung diese unmittelbar auf der Trennfläche aufliegt und somit außer einer Säuberung der Trennfläche im Bereich der aufliegenden Vorrichtung keine weiteren Handhabungen zum Ausrichten der Vorrichtung erforderlich sind. Weiter ist durch die mechanische Arretierung die Kurbelwelle exakt in OT-Position gehalten, wodurch das Übertragungsglied bei Wirken der Spannrolle während der Verschraubung des Antriebsrades mit der Nockenwelle als Hilfsvorrichtung dient und ein zusätzlicher, am Antriebsrad angreifender Gegenhalter entfällt.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. Furthermore, 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.

Eine vorteilhafte Weiterentwicklung des erfindungsgemäßen Verfahrens ist mit dem Anspruch 2 erreicht. Mit der Berücksichtigung von im Einlaufbetrieb am Übertragungsglied auftretenden Änderungen erübrigt sich eine baldige nachträgliche Einstellung der Steuerung. Um bei alternativer Verwendung ein sattes Aufliegen der Vorrichtung auf der bzw. den Trennflächen zu erreichen, ist die Vorhaltung in dem mit der Nockenwelle zusammenwirkenden Abschnitt der Vorrichtung auszubilden. Eine Einstellung der Steuerung mit Vorhaltung der Nockenwelle ist insbesondere vorteilhaft bei einem Nockenwellen-Antrieb durch Zahnriemen mit Mehrfach-V-Profil auf der Außenseite zum Antrieb weiterer Aggregate. Mit einer Vorrichtung nach Anspruch 3 zur Durchführung des erfindungsgemäßen Verfahrens kann der als Zweikant ausgebildete Schlüsselquerschnitt am Außenumfang der Nockenwelle zweckmäßig nahe der Verschraubungsstelle von Nockenwelle und Antriebsrad angeordnet und ferner kostengünstig durch zwei parallele Flächen an einem Anlaufbund der Nockenwelle hergestellt werden. Damit ist einerseits ohne zusätzlichen Materialaufwand ein festigkeitsmäßig steifes Zweikant erzielt und andererseits sind für die exakte Einstellung nachteilige Elastizitäten in der Einstellvorrichtung vermieden. Erfolgt schließlich bei der Herstellung der Nocken einer Nockenwelle deren erforderliche Drehung über das Zweikant, ist somit über dieses Zweikant in Verbindung mit der erfindungsgemäß gegen Trennflächen verspannt angeordneten Vorrichtung ein Höchstmaß an Einstellgenauigkeit in der Steuerung einer Hubkolben-Brennkraftmaschine, insbesondere eines hochverdichteten Dieselmotors mit in OT minimalen Toleranzen zwischen Kolbenboden und Ventiltellern,erzielt.An advantageous further development of the method according to the invention is achieved with claim 2. With the consideration of changes occurring in the running-in operation on the transmission element, there is no need to adjust the control system soon. In order to achieve a full contact of the device on the separating surface (s) with alternative use, provision must be made in the section of the device which interacts with the camshaft. Setting the control with provision of the camshaft is particularly advantageous in the case of a camshaft drive by means of toothed belts with a multiple V profile on the outside for driving further assemblies. With a device according to claim 3 for carrying out the method according to the invention, the two-edged key cross-section 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. On the one hand, this results in a stiff double-edged element that is rigid in terms of strength, and on the other hand, elasticities in the adjusting device that are disadvantageous for the exact setting are avoided. Finally, one takes place in the manufacture of the cams The required rotation of the camshaft over the square is thus achieved via this square in conjunction with the device arranged according to the invention braced against separating surfaces, a maximum degree of setting accuracy in the control of a reciprocating piston internal combustion engine, in particular a highly compressed diesel engine with minimal TDC tolerances between the piston crown and valve disks .

Verfahren und Vorrichtung nach der Erfindung sind anhand einer in der Zeichnung in

  • Fig. 1 abschnittsweise dargestellten Steuerung für einen in
  • Fig. 2 angedeuteten Dieselmotor beschrieben.
Method and device according to the invention are based on a in the drawing in
  • Fig. 1 sectionally shown control for a in
  • Fig. 2 indicated diesel engine described.

Mit einer Nockenwelle 1 ist über einen Konus 2 und einer Zentralschraube 3 ein Antriebsrad 4 verbindbar. Das Antriebsrad 4 steht über einen Zahnriemen 5 mit einem Rad 6 auf der Kurbelwelle 7 in Antriebsverbindung. Mit 8 ist ein Einspritzpumpenrad und mit 9 eine Spannrolle bezeichnet. Ein weiteres Rad 10 eines Nebenaggregates ist über das Mehrfach-V-Profil 11 an der Außenseite des Zahnriemens 5 angetrieben.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 profile 11 on the outside of the toothed belt 5.

Zum Einstellen der Steuerung wird im Referenzzylinder I des Dieselmotors 12 der Kolben 13 in OT gebracht. In dieser Position ist die Kurbelwelle 7 über eine Schwungscheibe 14 durch einen Absteckdorn 15 gegen das Kurbelgehäuse 16 drehgesichert.To set the control, the piston 13 is brought into TDC in the reference cylinder I of the diesel engine 12. In this position, the crankshaft 7 is rotationally secured against the crankcase 16 by means of a flywheel 14 using a setting pin 15.

Verdichtungs-Bei OT-Stellung des Kolbens 13 sind Einlaßventil 17 und Auslaßventil 18 geschlossen, wobei die Nockenwelle 1 mit dem Referenzzylinder I zugeordneter Drehläge der Nocken 19 und 20 für die Ventile 17 und 18 angeordnet ist. Die Nockenwelle 1 ist über ein an einem Anlaufbund 21 angeordnetes Zweikant 22 durch eine Vorrichtung 23 drehgesichert, Fig. 2.Compression When the piston 13 is in the TDC position, the inlet valve 17 and the outlet valve 18 are closed, the camshaft 1 being arranged with the rotational positions of the cams 19 and 20 assigned to the reference cylinder I for the valves 17 and 18. The camshaft 1 is connected to a start collar 21 orderly two-sided 22 secured against rotation by a device 23, Fig. 2nd

Die Vorrichtung 23 umfaßt ein aus Flachmaterial gebildetes, hochkant angeordnetes Element 24 mit in beiden Endbereichen 25 und 26 an einer Längsseite 27 ausgebildeten Anschlagflächen 28 und 28' und einer dazwischen an der Längsseite 27 angeordneten, U-förmigen Ausnehmung 29. Die Vorrichtung 23 wird über die Ausnehmung 29 mit dem quer zur Ebene der Trennflächen 30, 30' des Steuerraumgehäuses 31 an der Nockenwelle 1 angeordneten Zweikant . 22 in Eingriff gebracht. Durch das quer zur Ebene der Trennflächen 30, 30' an der Nockenwelle 1 angeordnete Zweikant 22 schlägt die Vorrichtung 23 am Ende des formschlüssigen Eingriffes mit den Anschlagflächen 28, 28' auf den Trennflächen 30, 30' auf, wobei durch eine ausreichend tiefe Ausnehmung 29 ein Freigang bis zur Begrenzung des Anlaufbundes 21 erzielt ist. über eine an Spannklauen 32, 32' angreifende Spreitzeinrichtung 33 ist die Vorrichtung 23 am Steuergehäuse 31 festgelegt.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 with the two-sided arranged transversely to the plane of the separating surfaces 30, 30 'of the control chamber housing 31 on the camshaft 1. 22 engaged. 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 on the control housing 31 by means of a spreading device 33 engaging clamping claws 32, 32 ′.

über die Vorrichtung 23 kann die Nockenwelle 1 ferner zum Ausgleich eines Einlauf-Setzmaßes des Zahnriemens 5 durch einen entsprechenden Winkel in Drehrichtung gegenüber dem Antriebsrad 4 vorgehalten werden. Zweckmäßigerweise ist diese Winkelvorhaltung über die Anordnung der Ausnehmung 29 bewirkt. Via the device 23, 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.

Auf das auf dem Konus 2 der Nockenwelle 1 mittels der leicht gelösten Zentralschraube 3 drehbeweglich gehaltene Antriebsrad 4 wird schließlich der Zahnriemen 5 aufgelegt und mittels der Spannrolle 9 auf die im Betrieb erforderliche Spannung eingestellt. Damit ist das Antriebsrad 4 über den Zahnriemen 5 und die drehblockierte Kurbelwelle 7 (durch Absteckdorn 15) gegenüber der durch die Vorrichtung 23 drehgesicherten Nockenwelle 1 drehfixiert zur endgültigen Verschraubung für einen antriebsfesten Reibschluß mit dem Konus 2 der Nockenwelle 1.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.

Das Zweikant ist ein Beispiel eines innen- oder außenflächig an der Nockenwelle ausgebildeten Schlüsselquerschnittes. Mit der Erfindung kann auch die Grundeinstellung der Ventilsteuerung kontrolliert werden.The square is an example of a key cross-section formed on the inside or outside of the camshaft. With the invention, the basic setting of the valve control can also be checked.

Claims (3)

1. Verfahren zum Einstellen der Ventilsteuerung einer Hubkolben-Brennkraftmaschine, insbesondere eines Dieselmotors, - mit einer von der Kurbelwelle durch ein endloses, biegsames Übertragungsglied angetriebenen Nockenwelle, wobei - die Kurbelwelle in OT-Position für einen Referenzzylinder angeordnet wird, - die Nockenwelle mit der Kurbelwellendrehlage zugeordneter Nockendrehlage mittels eines Schlüsselquerschnittes im Eingriff mit einer gegen eine Trennfläche des Steuerraumgehäuses anschlagbaren Vorrichtung drehgesichert wird und - ein mit der Nockenwelle durch Reibschluß antriebsfest verbindbares Antriebsrad beim Einstellen mittels gelöster Verschraubung drehbeweglich auf der Nockenwelle gehalten ist,
dadurch gekennzeichnet, - daß Nockenwelle (1) und Vorrichtung (23) mittels eines quer zur Ebene der Trennfläche (n) (30, 30') des Steuerraumgehäuses (31) angeordneten Schlüsselquerschnittes (Zweikant 22) in Eingriff gebracht werden, - daß das Antriebsrad (4) bei gelöster Verschraubung über das mit der Kurbelwelle (7) in Antriebsverbindung stehende, durch eine Spannrolle (9) gespannte Übertragungsglied (5) gegenüber der Nockenwelle (1) drehfixiert wird, wobei - die Kurbelwelle (7) in OT-Position (Absteckdorn 15) gegen das Kurbelgehäuse (16) drehgesichert ist. 1. Method for setting the valve control of a reciprocating piston internal combustion engine, in particular a diesel engine, - With a camshaft driven by the crankshaft through an endless, flexible transmission member, wherein the crankshaft is arranged in the TDC position for a reference cylinder, - The camshaft with the crankshaft rotational position assigned cam rotational position is secured against rotation by means of a key cross section in engagement with a device which can be abutted against a separating surface of the control chamber housing, and a drive wheel that can be connected to the camshaft by frictional engagement is rotatably held on the camshaft when adjusting by means of a loosened screw connection,
characterized, - That camshaft (1) and device (23) are brought into engagement by means of a key cross-section (square 22) arranged transversely to the plane of the separating surface (s) (30, 30 ') of the control chamber housing (31), - That the drive wheel (4) with loosened screw connection via the crankshaft (7) in drive connection, by a tension roller (9) tensioned transmission member (5) against the camshaft (1) is rotationally fixed, whereby - The crankshaft (7) is locked against rotation in the TDC position (setting pin 15) against the crankcase (16). 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Nockenwelle (1) über die Vorrichtung (23) um einen dem Einlauf-Setzmaß des übertragungsgliedes (5) entsprechenden Winkel in Drehrichtung gegenüber dem Antriebsrad (4) vorgehalten wird.2. The method according to claim 1, characterized in that the camshaft (1) via the device (23) by an inlet slump of the transmission member (5) corresponding angle in the direction of rotation relative to the drive wheel (4). 3. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1 oder 2, gekennzeichnet durch - ein balkenartiges Element (24) mit an einer Längsseite (27) ausgebildeten Anschlagflächen (28, 28') zum Abstützen am Steuerraumgehäuse, - einem am Element (24) an dessen Längsseite (27) angeordneten Schlüsselquerschnitt (U-förmige Ausnehmnung 29) zur Aufnahme des an der Nockenwelle (1) angeordneten, korrespondierenden Schlüsselquerschnittes (Zweikant 22), und - eine Haltevorrichtung (32, 32' und 33) zum Festlegen der Vorrichtung (23) am Steuerraumgehäuse (31). 3. Device for performing the method according to claim 1 or 2, characterized by a bar-like element (24) with stop surfaces (28, 28 ') formed on a longitudinal side (27) for support on the control chamber housing, - A key cross-section (U-shaped recess 29) arranged on the element (24) on its longitudinal side (27) for receiving the corresponding key cross-section (square 22) arranged on the camshaft (1), and - A holding device (32, 32 'and 33) for fixing the device (23) on the control chamber housing (31).
EP82107024A 1981-08-07 1982-08-04 Method and device for adjusting the valve drive of an internal-combustion engine, especially a diesel engine Expired EP0071972B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82107024T ATE16036T1 (en) 1981-08-07 1982-08-04 METHOD AND DEVICE FOR ADJUSTING THE VALVE TIMING OF A RECIPROCATING ENGINE, ESPECIALLY A DIESEL ENGINE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3131278 1981-08-07
DE19813131278 DE3131278A1 (en) 1981-08-07 1981-08-07 METHOD AND DEVICE FOR ADJUSTING THE VALVE CONTROL OF A PISTON PISTON COMBUSTION ENGINE, IN PARTICULAR. A DIESEL ENGINE

Publications (3)

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

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ID=6138811

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82107024A Expired EP0071972B1 (en) 1981-08-07 1982-08-04 Method and device for adjusting the valve drive of an internal-combustion engine, especially a diesel engine

Country Status (5)

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

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FR2545193A1 (en) * 1983-04-29 1984-11-02 Sedis Transmissions Mecaniques REMOVABLE DISTRIBUTION HOUSING FOR EXPLOSION OR COMBUSTION ENGINES
DE3832812A1 (en) * 1988-09-28 1990-03-29 Kloeckner Humboldt Deutz Ag DEVICE FOR ADJUSTING THE TIMING TIMES ON AN INTERNAL COMBUSTION ENGINE WHOSE CAMSHAFT IS DRIVED BY A TIMING BELT, A CHAIN OR ALSO A GEAR DRIVE DRIVE
DE3926430A1 (en) * 1989-08-10 1991-02-14 Audi Ag IC engine with at least two camshafts - has tool interlocking with and fixing camshafts w.r.t. each other to allow correct setting of angular positions
EP1892385A1 (en) * 2006-08-16 2008-02-27 Auto Service Tools Limited Device for holding camshaft against rotation
CN103939202A (en) * 2014-04-15 2014-07-23 蒋祖贵 Reciprocating-rotation piston engine
CN104963760A (en) * 2015-08-03 2015-10-07 湖州新奥利吸附材料有限公司 Control system of split-type internal combustion engine
WO2015185820A1 (en) * 2014-06-06 2015-12-10 Peugeot Citroen Automobiles Sa Device for positioning a camshaft
CN107178434A (en) * 2016-03-09 2017-09-19 本田技研工业株式会社 Overhead camshaft engine

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US5184401A (en) * 1990-11-30 1993-02-09 Mazda Motor Corporation Method of assembling valve drive mechanism to engine
US5845397A (en) * 1997-02-21 1998-12-08 Cummins Engine Company, Inc. Static timing method for heavy duty diesel engines
DE19919660A1 (en) * 1999-04-29 2000-11-02 Volkswagen Ag Method for temporary locking of crankshaft in IC engines with detachable connection of part segment of timing sprocket to end face of engine
US6415755B1 (en) * 2000-08-09 2002-07-09 Mccarthy Joseph W. Valve clearance adjusting tool and method for adjusting valve clearance
JP4198323B2 (en) * 2001-01-30 2008-12-17 三菱電機株式会社 Valve timing adjustment device
GB0214862D0 (en) * 2002-06-27 2002-08-07 Cnh Uk Ltd Engine timing
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DE102005012006A1 (en) * 2005-03-16 2006-09-28 Bayerische Motoren Werke Ag Internal combustion engine with a belt drive for ancillaries
CN103422928A (en) * 2013-07-18 2013-12-04 东风朝阳朝柴动力有限公司 Diesel engine timing locating method
DE102014104995A1 (en) * 2014-04-08 2015-10-08 Thyssenkrupp Presta Teccenter Ag Module with pre-oriented camshaft
CN104329168A (en) * 2014-09-05 2015-02-04 朝柴动力科技（北京）有限公司 Engine cylinder piston upper stopping point locking mechanism

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2545193A1 (en) * 1983-04-29 1984-11-02 Sedis Transmissions Mecaniques REMOVABLE DISTRIBUTION HOUSING FOR EXPLOSION OR COMBUSTION ENGINES
EP0124433A2 (en) * 1983-04-29 1984-11-07 Compagnie Des Transmissions Mecaniques Sedis Removable housing for the camshaft drive of an internal-combustion engine
EP0124433A3 (en) * 1983-04-29 1985-10-02 Compagnie Des Transmissions Mecaniques Sedis Societe Dite: Removable housing for the camshaft drive of an internal-combustion engine
DE3832812A1 (en) * 1988-09-28 1990-03-29 Kloeckner Humboldt Deutz Ag DEVICE FOR ADJUSTING THE TIMING TIMES ON AN INTERNAL COMBUSTION ENGINE WHOSE CAMSHAFT IS DRIVED BY A TIMING BELT, A CHAIN OR ALSO A GEAR DRIVE DRIVE
DE3926430A1 (en) * 1989-08-10 1991-02-14 Audi Ag IC engine with at least two camshafts - has tool interlocking with and fixing camshafts w.r.t. each other to allow correct setting of angular positions
EP1892385A1 (en) * 2006-08-16 2008-02-27 Auto Service Tools Limited Device for holding camshaft against rotation
CN103939202A (en) * 2014-04-15 2014-07-23 蒋祖贵 Reciprocating-rotation piston engine
CN103939202B (en) * 2014-04-15 2016-06-22 蒋祖贵 A kind of reciprocating rotary piston-mode motor
WO2015185820A1 (en) * 2014-06-06 2015-12-10 Peugeot Citroen Automobiles Sa Device for positioning a camshaft
FR3021995A1 (en) * 2014-06-06 2015-12-11 Peugeot Citroen Automobiles Sa DEVICE FOR POSITIONING A CAMSHAFT
CN104963760A (en) * 2015-08-03 2015-10-07 湖州新奥利吸附材料有限公司 Control system of split-type internal combustion engine
CN104963760B (en) * 2015-08-03 2017-07-28 湖州新奥利吸附材料有限公司 A kind of control system of Split type internal combustion machine
CN107178434A (en) * 2016-03-09 2017-09-19 本田技研工业株式会社 Overhead camshaft engine
CN107178434B (en) * 2016-03-09 2019-06-18 本田技研工业株式会社 Overhead camshaft engine

Also Published As

Publication number Publication date
DE3266839D1 (en) 1985-11-14
US4461062A (en) 1984-07-24
EP0071972A3 (en) 1984-02-08
EP0071972B1 (en) 1985-10-09
ATE16036T1 (en) 1985-10-15
JPS6344923B2 (en) 1988-09-07
US4570334A (en) 1986-02-18
DE3131278A1 (en) 1983-02-24
JPS5830407A (en) 1983-02-22

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