DE4135750C1 - Camshaft for IC engine - is held in bearing with flexible element and eccentric ring - Google Patents

Camshaft for IC engine - is held in bearing with flexible element and eccentric ring

Info

Publication number
DE4135750C1
DE4135750C1 DE4135750A DE4135750A DE4135750C1 DE 4135750 C1 DE4135750 C1 DE 4135750C1 DE 4135750 A DE4135750 A DE 4135750A DE 4135750 A DE4135750 A DE 4135750A DE 4135750 C1 DE4135750 C1 DE 4135750C1
Authority
DE
Germany
Prior art keywords
bearing
eccentric ring
camshaft
support element
shaft
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 - Lifetime
Application number
DE4135750A
Other languages
German (de)
Inventor
Rudolf 7251 Wimsheim De Herrmann
Alfred 7251 Weissach De Koch
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
Priority to DE4135750A priority Critical patent/DE4135750C1/en
Application granted granted Critical
Publication of DE4135750C1 publication Critical patent/DE4135750C1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/028—Gearboxes; Mounting gearing therein characterised by means for reducing vibration or noise
    • 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
    • F01L1/026—Gear drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0065—Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
    • F02F7/008—Sound insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/10—Bearings, parts of which are eccentrically adjustable with respect to each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/06—Elastic or yielding bearings or bearing supports, for exclusively rotary movement by means of parts of rubber or like materials
    • F16C27/066—Ball or roller bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2360/00—Engines or pumps
    • F16C2360/18—Camshafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
    • F16H57/022—Adjustment of gear shafts or bearings
    • F16H2057/0222—Lateral adjustment
    • F16H2057/0224—Lateral adjustment using eccentric bushes

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

Canshaft bearing uses an interposed flexible support element to carry the shaft in the engine without solid-conducted sound. The supporting element (6) should be coaxially enclosed by an eccentric ring (7) which can rotate relative the shaft (1). The outer cylindrical surface (F) of the ring is pref. eccentric to the centrepoint of the bearing and the element is vulcanised to the ring and bearing as pre-installed assembly. USE/ADVANTAGE - Motor vehicles. Eccentric ring round support element with bearing as assembly reduces engine noise, e.g. under varying torque and tooth loading.

Description

Die Erfindung betrifft eine Lagerung für eine Welle in einer Brennkraftmaschine gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a bearing for a shaft in a Internal combustion engine according to the preamble of patent claim 1.

Aus der DE-34 05 818 C2 ist eine Lagerung für eine Kurbelwelle bekannt, bei der in einer Gehäusewand ein die Kurbelwelle lagernder Ring unter Zwischenschaltung eines elastischen, körperschallisolierenden Stützelementes gehalten ist.A bearing for a crankshaft is known from DE-34 05 818 C2, at the ring under the crankshaft in a housing wall Interposition of an elastic, structure-borne sound-insulating support element is held.

Der Erfindung liegt die Aufgabe zugrunde, eine verbesserte Lagerung für eine Welle zu schaffen, die eine möglichst geringe Geräuschentwicklung in einer Brennkraftmaschine verursacht.The invention has for its object an improved storage for a To create a wave that has the lowest possible noise in one Internal combustion engine caused.

Diese Aufgabe wird bei einer gattungsgemäßen Einrichtung durch die kennzeichnenden Merkmale des Patentanspruchs 1 gelöst.This object is achieved in a generic device by the characterizing features of claim 1 solved.

Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen gekennzeichnet.Further advantageous embodiments of the invention are in the Subclaims marked.

Bei dieser Lagerung ist das elastische Stützelement koaxial von einem Exzenterring umgeben, wobei der Exzenterring gegenüber der Welle verdrehbar ist.In this storage, the elastic support element is coaxial from one Surround eccentric ring, the eccentric ring rotatable relative to the shaft is.

Zusätzlich zur Körperschallisolierung bietet diese Anordnung den Vorteil, daß auf der Welle angeordnete Zahnräder, Nocken oder dergleichen radial verstellbar sind und Klappergeräusche vermieden werden. Insbesondere bei mit Wechseldrehmomenten beaufschlagten Wellen werden die durch den Zahnflankenwechsel hervorgerufenen Klappergeräusche unterbunden. Weiterhin ist durch das Verdrehen des Exzenterringes das Spiel zwischen den beteiligten Verzahnungen in einfacher Weise ein- bzw. nachstellbar. Darüber hinaus können geringe Fertigungstoleranzen ausgeglichen werden und im Reparaturfall ist ein Justieren möglich. In addition to structure-borne noise insulation, this arrangement offers the advantage that arranged on the shaft gears, cams or the like radially are adjustable and rattling noises are avoided. Especially with Alternating torques acted upon by the Rattling noises caused by tooth flank changes are prevented. Furthermore, by rotating the eccentric ring, the game between the the gears involved can be easily adjusted or adjusted. About that In addition, small manufacturing tolerances can be compensated for and In the event of a repair, adjustment is possible.  

Die exzentrische Ausbildung der äußeren Zylinderfläche des Exzenterringes zur Lagermitte bietet den Vorteil, daß die innere Zylinderfläche koaxial zur Lagermitte angeordnet ist und somit ein konstanter Spalt zwischen dem Lager und dem Exzenterring verbleibt, der dadurch gleichmäßig von dem elastischen Stützelement ausgefüllt wird.The eccentric formation of the outer cylindrical surface of the eccentric ring to the center of the bearing has the advantage that the inner cylinder surface coaxial with Bearing center is arranged and thus a constant gap between the bearing and the eccentric ring remains, which is thereby even from the elastic Support element is filled.

Der Exzenterring kann in einer Gehäusewand der Brennkraftmaschine gehalten sein oder z. B. in einem Getriebe der Brennkraftmaschine innerhalb einer Hohlwelle gelagert sein. In diesem Fall kann zusätzlich die Flucht der Welle gegenüber der Hohlwelle eingestellt werden.The eccentric ring can be held in a housing wall of the internal combustion engine be or z. B. in a gearbox of the internal combustion engine within a Be hollow shaft. In this case, the shaft can also escape can be adjusted relative to the hollow shaft.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher erläutert.An embodiment of the invention is shown in the drawing and is explained in more detail below.

Es zeigtIt shows

Fig. 1 einen Schnitt durch ein Lager einer Nockenwelle entlang der Linie I-I gemäß Fig. 2, Fig. 1 shows a section through a bearing of a camshaft along the line II shown in FIG. 2,

Fig. 2 eine Ansicht in Pfeilrichtung X gemäß Fig. 1 und Fig. 2 is a view in the direction of arrow X according to FIG. 1 and

Fig. 3 einen Schnitt entlang der Linie III-III gemäß Fig. 1. Fig. 3 is a section along the line III-III of FIG. 1.

In einer nicht näher gezeigten Brennkraftmaschine ist eine als Nockenwelle 1 ausgebildete Welle in einer Gehäusewand 2 gelagert. Hierzu ist auf einem Wellenzapfen 3 ein Lager 4 angeordnet, dessen Lagerring 5 unter Zwischenschaltung eines elastischen Stützelements 6 koaxial von einem Exzenterring 7 umgeben ist. Der Lagerring 5, der Exzenterring 7 und das anvulkanisierte Stützelement 6 bilden eine vormontierbare Einheit.In an internal combustion engine, not shown, a shaft designed as a camshaft 1 is mounted in a housing wall 2 . For this purpose, a bearing 4 is arranged on a shaft journal 3 , the bearing ring 5 of which is coaxially surrounded by an eccentric ring 7 with the interposition of an elastic support element 6 . The bearing ring 5 , the eccentric ring 7 and the vulcanized support element 6 form a preassembled unit.

Eine äußere Zylinderfläche F des Ringes 7 ist exzentrisch zu dem auf der Wellenachse A-A liegenden Lagermittelpunkt M angeordnet, so daß ein Mittelpunkt P der Zylinderfläche F einen geringen Versatz D zu dem Lagermittelpunkt M aufweist.An outer cylinder surface F of the ring 7 is arranged eccentrically to the bearing center M lying on the shaft axis AA, so that a center P of the cylinder surface F has a slight offset D to the bearing center M.

Auf der Nockenwelle 1 sind zwei Nocken 8 und ein erstes Zahnrad 9 angeordnet, welches im Eingriff mit einem auf einer zweiten Nockenwelle 10 angeordneten, zweiten Zahnrad 11 steht. On the camshaft 1 , two cams 8 and a first gear 9 are arranged, which is in engagement with a second gear 11 arranged on a second camshaft 10 .

Auf der Zylinderfläche F ist ein radial nach außen weisender Bund 12 angeordnet, der an der Gehäusewand 2 anliegt. Dieser Bund 12 ist mittels von als Schrauben 13 ausgebildeten Spannmitteln durchsetzten Klemmhülsen 14 zwischen Gehäusewand 2 und Klemmhülsen 14 arretierbar.A radially outward-pointing collar 12 is arranged on the cylinder surface F and bears against the housing wall 2 . This collar 12 can be locked between the housing wall 2 and clamping sleeves 14 by means of clamping sleeves 14 , which are embodied as screws 13 .

Im Betrieb der Brennkraftmaschine wird die erste Nockenwelle 1 angetrieben und treibt ihrerseits über das Zahnradpaar 9, 11 die zweite Nockenwelle 10 an, die dabei um ihre Längsachse B-B rotiert. Die Übertragung von Körperschall zwischen Nockenwelle 1 und Gehäusewand 2 wird dabei wirkungsvoll von dem elastischen Stützelement 6 unterdrückt.During operation of the internal combustion engine, the first camshaft 1 is driven and in turn drives the second camshaft 10 via the gear pair 9 , 11 , which rotates about its longitudinal axis BB. The transmission of structure-borne noise between camshaft 1 and housing wall 2 is effectively suppressed by the elastic support element 6 .

Das Zahnflankenspiel zwischen den Verzahnungen der Zahnräder 9 und 11 der beiden Nockenwellen 1 und 10 kann nach dem Lösen der Schrauben 13 durch Verdrehen des Exzenterringes 7 eingestellt werden. Hierzu wird mit einem Werkzeug in Öffnungen 15 des Exzenterringes 7 eingegriffen. Der Lagerpunkt M bewegt sich dabei gemäß Fig. 3 auf einer Kreisbahn K um den Mittelpunkt P. Bewegt sich der Punkt M unterhalb einer Geraden G-G, die die Wellenachse B-B und den Mittelpunkt P verbindet, so vergrößert sich, das Zahnflankenspiel erhöhend, der Abstand der Nockenwellen 1 und 10 im Bereich der Gehäusewand 2. Das Zahnflankenspiel wird verringert, wenn sich der Punkt M oberhalb der Geraden G-G auf der Kreisbahn K bewegt. Hierbei werden die beiden Nockenwellen 1 und 2 durch das elastische Stützelement 6 gegeneinander verspannt.The backlash between the teeth of the gears 9 and 11 of the two camshafts 1 and 10 can be adjusted by turning the eccentric ring 7 after loosening the screws 13 . For this purpose, a tool is inserted into openings 15 of the eccentric ring 7 . The bearing point M moves according to FIG. 3 on a circular path K around the center P. If the point M moves below a straight line GG, which connects the shaft axis BB and the center P, the gap between the teeth increases, increasing the backlash Camshafts 1 and 10 in the area of the housing wall 2 . The backlash is reduced when the point M moves above the straight line GG on the circular path K. Here, the two camshafts 1 and 2 are braced against each other by the elastic support element 6 .

Nach dem Erreichen der korrekten Einstellung werden die Schrauben 13 angezogen, wobei der Bund 12 zwischen den Klemmhülsen 14 und der Gehäusewand 2 durch Klemmen arretiert wird.After the correct setting has been reached, the screws 13 are tightened, the collar 12 being locked between the clamping sleeves 14 and the housing wall 2 by clamping.

Claims (6)

1. Lagerung für eine Welle, insbesondere Nockenwelle in einer Brennkraftmaschine in einem Lager, welches die Welle unter Zwischenschaltung eines elastischen Stützelementes körperschallisolierend in der Brennkraftmaschine hält, dadurch gekennzeichnet, daß das Stützelement (6) koaxial von einem Exzenterring (7) umgeben ist, welcher gegenüber der Welle (Nockenwelle 1) verdrehbar ist.1. Storage for a shaft, in particular camshaft in an internal combustion engine in a bearing, which holds the shaft with the interposition of an elastic support element structure-borne sound insulation in the internal combustion engine, characterized in that the support element ( 6 ) is coaxially surrounded by an eccentric ring ( 7 ), which is rotatable relative to the shaft (camshaft 1 ). 2. Lagerung nach Anspruch 1, dadurch gekennzeichnet, daß eine äußere Zylinderfläche (F) des Exzenterringes (7) exzentrisch zum Lagermittelpunkt (M) angeordnet ist.2. Storage according to claim 1, characterized in that an outer cylindrical surface (F) of the eccentric ring ( 7 ) is arranged eccentrically to the bearing center (M). 3. Lagerung nach Anspruch 1, dadurch gekennzeichnet, daß auf der Nockenwelle (1) ein erstes Zahnrad (9) angeordnet ist, welches mit einem zweiten Zahnrad (11) einer parallel angeordneten zweiten Nockenwelle (10) im Eingriff steht, wobei durch das Verdrehen des Exzenterringes (7) das Zahnflankenspiel des Eingriffs einstellbar ist.3. Bearing according to claim 1, characterized in that on the camshaft ( 1 ) a first gear ( 9 ) is arranged, which is in engagement with a second gear ( 11 ) of a second camshaft ( 10 ) arranged in parallel, by twisting of the eccentric ring ( 7 ) the backlash of the engagement is adjustable. 4. Lagerung nach Anspruch 1, dadurch gekennzeichnet, daß das Stützelement (6), Exzenterring (7) und das Lager (4) als vormontierbare Einheit ausgebildet sind, wobei das Stützelement (6) anvulkanisiert ist.4. Storage according to claim 1, characterized in that the support element ( 6 ), eccentric ring ( 7 ) and the bearing ( 4 ) are designed as a preassembled unit, the support element ( 6 ) being vulcanized. 5. Lagerung nach Anspruch 1, dadurch gekennzeichnet, daß der Exzenterring (7) in einer Gehäusewand (2) der Brennkraftmaschine gehalten ist.5. Bearing according to claim 1, characterized in that the eccentric ring ( 7 ) is held in a housing wall ( 2 ) of the internal combustion engine. 6. Lagerung nach Anspruch 5, dadurch gekennzeichnet, daß auf der Zylinderfläche (F) ein radial nach außen weisender Bund (12) angeordnet ist, welcher zwischen der Gehäusewand (2) und von Spannmitteln (Schrauben 13) durchsetzten Klemmhülsen (14) arretierbar ist.6. Bearing according to claim 5, characterized in that a radially outwardly facing collar ( 12 ) is arranged on the cylinder surface (F), which can be locked between the housing wall ( 2 ) and clamping means (screws 13 ) penetrated clamping sleeves ( 14 ) .
DE4135750A 1991-10-30 1991-10-30 Camshaft for IC engine - is held in bearing with flexible element and eccentric ring Expired - Lifetime DE4135750C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4135750A DE4135750C1 (en) 1991-10-30 1991-10-30 Camshaft for IC engine - is held in bearing with flexible element and eccentric ring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4135750A DE4135750C1 (en) 1991-10-30 1991-10-30 Camshaft for IC engine - is held in bearing with flexible element and eccentric ring

Publications (1)

Publication Number Publication Date
DE4135750C1 true DE4135750C1 (en) 1992-10-22

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DE4135750A Expired - Lifetime DE4135750C1 (en) 1991-10-30 1991-10-30 Camshaft for IC engine - is held in bearing with flexible element and eccentric ring

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10322248A1 (en) * 2003-05-13 2004-12-09 Federal-Mogul Wiesbaden Gmbh & Co. Kg Shaft system for motor vehicle engine, uses thickened shaft inserts for holding half shell bearings
WO2008124454A1 (en) 2007-04-03 2008-10-16 Cameron International Corporation Integral scroll and gearbox for a compressor with speed change option
CN104662304A (en) * 2012-09-26 2015-05-27 西门子公司 Integrally geared compressor with adjustable intermediate gearwheel
WO2016173840A1 (en) * 2015-04-27 2016-11-03 Thyssenkrupp Presta Ag Steering gear having an elastically mounted pinion

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3405818C2 (en) * 1983-02-25 1988-09-22 Steyr-Daimler-Puch Ag, Wien, At

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3405818C2 (en) * 1983-02-25 1988-09-22 Steyr-Daimler-Puch Ag, Wien, At

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10322248A1 (en) * 2003-05-13 2004-12-09 Federal-Mogul Wiesbaden Gmbh & Co. Kg Shaft system for motor vehicle engine, uses thickened shaft inserts for holding half shell bearings
DE10322248B4 (en) * 2003-05-13 2006-10-19 Federal-Mogul Wiesbaden Gmbh & Co. Kg System with shaft and at least two bearings and device for producing a system with shaft and at least two bearings
WO2008124454A1 (en) 2007-04-03 2008-10-16 Cameron International Corporation Integral scroll and gearbox for a compressor with speed change option
US8393856B2 (en) 2007-04-03 2013-03-12 Cameron International Corporation Integral scroll and gearbox for a compressor with speed change option
US9371838B2 (en) 2007-04-03 2016-06-21 Ingersoll-Rand Company Integral scroll and gearbox for a compressor with speed change option
EP2543887A3 (en) * 2007-04-03 2017-11-15 Ingersoll-Rand Company Integral scroll and gearbox for a compressor with speed change option
CN104662304A (en) * 2012-09-26 2015-05-27 西门子公司 Integrally geared compressor with adjustable intermediate gearwheel
WO2016173840A1 (en) * 2015-04-27 2016-11-03 Thyssenkrupp Presta Ag Steering gear having an elastically mounted pinion

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