EP0854271B1 - Camshaft bearing arrangement in the cylinder head of an internal combustion engine - Google Patents

Camshaft bearing arrangement in the cylinder head of an internal combustion engine Download PDF

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Publication number
EP0854271B1
EP0854271B1 EP97121420A EP97121420A EP0854271B1 EP 0854271 B1 EP0854271 B1 EP 0854271B1 EP 97121420 A EP97121420 A EP 97121420A EP 97121420 A EP97121420 A EP 97121420A EP 0854271 B1 EP0854271 B1 EP 0854271B1
Authority
EP
European Patent Office
Prior art keywords
camshaft
internal combustion
combustion engine
cylinder head
cover
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
EP97121420A
Other languages
German (de)
French (fr)
Other versions
EP0854271A1 (en
Inventor
Josef Astner
Frank Schneider
Manfred Wamser
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.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler 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
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Application filed by DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP0854271A1 publication Critical patent/EP0854271A1/en
Application granted granted Critical
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Anticipated expiration legal-status Critical
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Classifications

    • 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
    • F02F7/006—Camshaft or pushrod housings
    • 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
    • F01L1/0532—Camshafts overhead type the cams being directly in contact with the driven valve
    • 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
    • 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 invention relates to a camshaft bearing arrangement for storing at least one camshaft in the cylinder head Internal combustion engine according to the preamble of patent claim 1.
  • EP 0 250 797 A2 describes a generic camshaft bearing arrangement for the storage of camshafts in the cylinder head Internal combustion engine known, with camshaft bearings in one removable cover are arranged.
  • the lid forms one End wall of the cylinder head, which has a control chamber section of the cylinder head of the internal combustion engine.
  • a camshaft bearing arrangement is known from EP 0 459 341 A1, with a removable cover to form a gearbox with a bearing for one from the housing of the cylinder head projecting end of the camshafts is provided.
  • a major advantage of the camshaft bearing arrangement according to the invention is that by integrating a Flange area for a feed pump in the cover of the internal combustion engine in addition to those also integrated in the lid Camshaft bearings another function without magnification the overall length of the cylinder head is accommodated. Further enables the self-contained design of the camshaft bearing a relatively rigid mounting of the camshaft.
  • FIG. 1 shows a camshaft bearing arrangement according to the invention for mounting an intake-side camshaft 1 and one in parallel for this purpose extending camshaft 2 in the cylinder head 3 a multi-cylinder internal combustion engine.
  • the cylinder head 3 is of a cylinder head cover, not shown here covered.
  • the cylinder head 3 has an end face 4 of the internal combustion engine a removable housing part 5, which is designed as a cover is, which with several not shown here Screws is attached to the internal combustion engine.
  • the cover 5 forms part of an end wall 6 of the cylinder head 3 from, the cover 5 up to a connection the cylinder head cover of the internal combustion engine extends and one Control room section 7 of the cylinder head 3 covers.
  • the top 5 is provided with a sealing surface 8, sealing with a pad of the cylinder head cover cooperates.
  • the cover 5 has a suspension eye 10 for attaching a load hook for the transport of the internal combustion engine.
  • each is in the direction of a longitudinal central axis 11 camshafts 1 of the internal combustion engine, 2 with inlet cam 12 and outlet cam 13 for actuating Inlet valves 14 and 15 are provided, of which here only the valve stems 14a, 15a with valve spring retainers 14b, 15b are shown.
  • the intake valves 14 and exhaust valves 15 are rotated with respect to the longitudinal central axis 11, wherein on each camshaft 1, 2, the intake cams 12 and Exhaust cams 13 alternately follow each other.
  • the camshafts 1, 2 are arranged in several spaced apart Camshaft bearings 16, 17 rotatably supported, of which here only the lower parts of the bearing are shown.
  • End camshaft bearing 16a is according to the invention in the screwed cover 5 of the internal combustion engine and this leads to a shorter overall length of the cylinder head 3.
  • This final camshaft bearing 16a is closed End shield formed.
  • the lid 5 has one Flange area 19 on (see Fig. 2) to which a feed pump 20 is flanged by the intake-side camshaft 1 is driven.
  • the feed pump 20 serves to promote Fuel from the engine's tank.
  • the end region 21 has an outlet side Camshaft 2 an integral with it
  • Driving bell 22 for driving one also on the flange area 19 of the lid 5 attached high pressure pump 23, the communicates with the feed pump 20 and for fuel supply the injection system of the internal combustion engine.
  • the sealing of the two camshafts 1, 2 against the cover 5 is not visible here in the cover 5 inserted here Shaft sealing rings reached.
  • the camshafts 1, 2 can otherwise serve to drive a wide variety of units.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Description

Die Erfindung bezieht sich auf eine Nockenwellenlageranordnung zur Lagerung mindestens einer Nockenwelle im Zylinderkopf einer Brennkraftmaschine gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a camshaft bearing arrangement for storing at least one camshaft in the cylinder head Internal combustion engine according to the preamble of patent claim 1.

Aus der EP 0 250 797 A2 ist eine gattungsgemäße Nockenwellenlageranordnung zur Lagerung von Nockenwellen im Zylinderkopf einer Brennkraftmaschine bekannt, wobei Nockenwellenlager in einem abnehmbaren Deckel angeordnet sind. Der Deckel bildet eine Stirnwand des Zylinderkopfes, welche einen Steuerraumabschnitt des Zylinderkopfes der Brennkraftmaschine abdeckt.EP 0 250 797 A2 describes a generic camshaft bearing arrangement for the storage of camshafts in the cylinder head Internal combustion engine known, with camshaft bearings in one removable cover are arranged. The lid forms one End wall of the cylinder head, which has a control chamber section of the cylinder head of the internal combustion engine.

Aus der DE 36 43 438 C1 ist eine Nockenwellenlageranordnung einer Brennkraftmaschine bekannt. Die Nockenwelle der mehrzylindrigen Brennkraftmaschine ist zusätzlich im Steuerkasten der Brennkraftmaschine gelagert. Dieses Lager stützt sich an einem Lagerschild ab, welches seinerseits mit dem Steuerkastendeckel verschraubt ist. Hierdurch ergibt sich ein großer Bauraumbedarf der Anordnung.DE 36 43 438 C1 describes a camshaft bearing arrangement Internal combustion engine known. The multi-cylinder camshaft Internal combustion engine is also in the control box Internal combustion engine stored. This camp is based on one End shield, which in turn with the control box cover is screwed. This results in a large space requirement the arrangement.

Aus der EP 0 459 341 A1 ist eine Nockenwellenlageranordnung bekannt, bei der ein abnehmbarer Deckel zur Bildung eines Getriebekastens mit einer Lagerstelle für ein aus dem Gehäuse des Zylinderkopfes auskragendes Ende der Nockenwellen vorgesehen.A camshaft bearing arrangement is known from EP 0 459 341 A1, with a removable cover to form a gearbox with a bearing for one from the housing of the cylinder head projecting end of the camshafts is provided.

Zum allgemeinen technischen Hintergrund wird noch auf die DE 34 24 773 A1 verwiesen. For the general technical background, reference is made to DE 34 24 773 A1.

Es ist die Aufgabe der Erfindung eine Nockenwellenlageranordnung derart auszubilden, daß bei ausreichend steifer Lagerung der Nockenwelle weitere Funktionen auf kleinem Bauraum unterbringbar sind.It is the object of the invention to provide a camshaft bearing arrangement to be designed in such a way that with sufficiently rigid storage additional functions can be accommodated on the camshaft in a small installation space are.

Diese Aufgabe wird erfindungsgemäß durch die im Kennzeichen des Patentanspruchs 1 gegebenen Merkmale gelöst.This object is achieved by the in the characteristic of Features given claim 1 solved.

Ein wesentlicher Vorteil der erfindungsgemäßen Nockenwellenlageranordnung besteht darin, daß durch die Integration eines Flanschbereiches für eine Förderpumpe in den Deckel der Brennkraftmaschine zusätzlich zu den ebenfalls in den Deckel integrierten Nockenwellenlagern eine weitere Funktion ohne Vergößerung der Baulänge des Zylinderkopfes untergebracht ist. Ferner ermöglicht die in sich geschlossene Ausbildung des Nockenwellenlagers eine relativ steife Lagerung der Nockenwelle.A major advantage of the camshaft bearing arrangement according to the invention is that by integrating a Flange area for a feed pump in the cover of the internal combustion engine in addition to those also integrated in the lid Camshaft bearings another function without magnification the overall length of the cylinder head is accommodated. Further enables the self-contained design of the camshaft bearing a relatively rigid mounting of the camshaft.

Weitere Ausgestaltungen und Vorteile der Erfindung gehen aus den übrigen Unteransprüchen und der Beschreibung hervor.Further configurations and advantages of the invention go out the other subclaims and the description.

Ein Ausführungsbeispiel der Erfindung ist im folgenden in zwei Zeichnungen mit weiteren Einzelheiten näher erläutert, und zwar zeigen:

Fig. 1
in einer Draufsicht eine erfindungsgemäße Nockenwellenlageranordnung im Zylinderkopf einer Brennkraftmaschine mit einem stirnseitig an der Brennkraftmaschine angeflanschten, abnehmbaren Deckel und
Fig. 2
eine stirnseitige Draufsicht auf den Deckel der Brennkraftmaschine.
An embodiment of the invention is explained in more detail in the following in two drawings, showing:
Fig. 1
In a plan view, a camshaft bearing arrangement according to the invention in the cylinder head of an internal combustion engine with a removable cover and flanged on the end face of the internal combustion engine
Fig. 2
a front plan view of the cover of the internal combustion engine.

Fig. 1 zeigt eine erfindungsgemäße Nockenwellenlageranordnung zur Lagerung einer einlaßseitigen Nockenwelle 1 und einer parallel dazu verlaufenden auslaßseitigen Nockenwelle 2 im Zylinderkopf 3 einer mehrzylindrigen Brennkraftmaschine. Der Zylinderkopf 3 ist von einer hier nicht dargestellten Zylinderkopfhaube abgedeckt.1 shows a camshaft bearing arrangement according to the invention for mounting an intake-side camshaft 1 and one in parallel for this purpose extending camshaft 2 in the cylinder head 3 a multi-cylinder internal combustion engine. The cylinder head 3 is of a cylinder head cover, not shown here covered.

Der Zylinderkopf 3 weist an einer Stirnseite 4 der Brennkraftmaschine ein abnehmbares Gehäuseteil 5 auf, das als Deckel ausgebildet ist, welcher mit mehreren hier nicht dargestellten Schrauben an der Brennkraftmaschine befestigt ist. Gemäß Fig. 2 bildet der Deckel 5 einen Teil einer Stirnwand 6 des Zylinderkopfes 3 aus, wobei sich der Deckel 5 bis zu einem Anschluß an die Zylinderkopfhaube der Brennkraftmaschine erstreckt und einen Steuerraumabschnitt 7 des Zylinderkopfes 3 abdeckt. An einer Oberseite ist der Deckel 5 mit einer Dichtfläche 8 versehen, die mit einer Anschlußfläche der Zylinderkopfhaube dichtend zusammenwirkt. In einem einlaßseitigen Bereich 9 bildet der Deckel 5 eine Aufhängeöse 10 zur Befestigung eines Lasthakens für den Transport der Brennkraftmaschine aus.The cylinder head 3 has an end face 4 of the internal combustion engine a removable housing part 5, which is designed as a cover is, which with several not shown here Screws is attached to the internal combustion engine. 2 the cover 5 forms part of an end wall 6 of the cylinder head 3 from, the cover 5 up to a connection the cylinder head cover of the internal combustion engine extends and one Control room section 7 of the cylinder head 3 covers. At a The top 5 is provided with a sealing surface 8, sealing with a pad of the cylinder head cover cooperates. Forms in an inlet-side area 9 the cover 5 has a suspension eye 10 for attaching a load hook for the transport of the internal combustion engine.

Wie in Fig. 1 gezeigt ist jede der in Richtung einer Längsmittelachse 11 der Brennkraftmaschine verlaufenden Nockenwellen 1, 2 mit Einlaßnocken 12 und Auslaßnocken 13 zur Betätigung von Einlaßventilen 14 und Auslaßventilen 15 versehen, von denen hier nur die Ventilschäfte 14a, 15a mit Ventilfedertellern 14b, 15b dargestellt sind. Die Einlaßventile 14 und Auslaßventile 15 sind in Bezug auf die Längsmittelachse 11 verdreht angeordnet, wobei an jeder Nockenwelle 1, 2 die Einlaßnocken 12 und die Auslaßnocken 13 jeweils abwechselnd aufeinanderfolgen. Die Nokkenwellen 1, 2 sind in mehreren mit Abstand voneinander angeordneten Nockenwellenlagern 16, 17 drehbar gelagert, wovon hier nur die Lagerunterteile dargestellt sind. Dabei ist die Anordnung aufgrund der verdrehten Ventilanordnung so getroffen, daß pro Zylinder jeweils zwei Nocken 12, 13 der einlaßseitigen Nokkenwelle 1 zwischen zwei benachbarten Nockenwellenlagern 16 angeordnet sind, während jeweils zwei Nocken 12, 13 der auslaß-seitigen Nockenwelle 2 zu beiden Seiten eines Nockenwellenlagers 17 angeordnet sind.As shown in Fig. 1, each is in the direction of a longitudinal central axis 11 camshafts 1 of the internal combustion engine, 2 with inlet cam 12 and outlet cam 13 for actuating Inlet valves 14 and 15 are provided, of which here only the valve stems 14a, 15a with valve spring retainers 14b, 15b are shown. The intake valves 14 and exhaust valves 15 are rotated with respect to the longitudinal central axis 11, wherein on each camshaft 1, 2, the intake cams 12 and Exhaust cams 13 alternately follow each other. The camshafts 1, 2 are arranged in several spaced apart Camshaft bearings 16, 17 rotatably supported, of which here only the lower parts of the bearing are shown. Here is the arrangement due to the twisted valve arrangement so that per cylinder two cams 12, 13 of the intake-side camshaft 1 arranged between two adjacent camshaft bearings 16 are, while two cams 12, 13 of the outlet-side Camshaft 2 on both sides of a camshaft bearing 17 are arranged.

Das an einem Ende 18 der einlaßseitigen Nockenwelle 1 angeordnetes Abschlußnockenwellenlager 16a ist erfindungsgemäß in dem angeschraubten Deckel 5 der Brennkraftmaschine angeordnet und führt dadurch zu einer geringeren Baulänge des Zylinderkopfes 3. Dieses Abschlußnockenwellenlager 16a ist als in sich geschlossenes Lagerschild ausgebildet. Der Deckel 5 weist einen Flanschbereich 19 auf (siehe Fig. 2), an den eine Förderpumpe 20 angeflanscht ist, die von der einlaßseitigen Nockenwelle 1 angetrieben wird. Die Förderpumpe 20 dient zur Förderung von Kraftstoff aus dem Tank der Brennkraftmaschine.That arranged at one end 18 of the intake-side camshaft 1 End camshaft bearing 16a is according to the invention in the screwed cover 5 of the internal combustion engine and this leads to a shorter overall length of the cylinder head 3. This final camshaft bearing 16a is closed End shield formed. The lid 5 has one Flange area 19 on (see Fig. 2) to which a feed pump 20 is flanged by the intake-side camshaft 1 is driven. The feed pump 20 serves to promote Fuel from the engine's tank.

In einem dem Deckel 5 zugewandten Endbereich 21 weist die auslaßseitige Nockenwelle 2 eine einstückig mit ihr ausgebildete Mitnehmerglocke 22 zum Antrieb einer ebenfalls am Flanschbereich 19 des Deckels 5 befestigten Hochdruckpumpe 23 auf, die mit der Förderpumpe 20 in Verbindung steht und zur Kraftstoffversorgung des Einspritzsystemes der Brennkraftmaschine dient. Die Abdichtung der beiden Nockenwellen 1, 2 gegenüber dem Dekkel 5 wird über in den Deckel 5 eingelegte hier nicht sichtbare Wellendichtringe erreicht. Die Nockenwellen 1, 2 können im übrigen zum Antrieb unterschiedlichster Aggregate dienen.In an end region 21 facing the cover 5, the end region 21 has an outlet side Camshaft 2 an integral with it Driving bell 22 for driving one also on the flange area 19 of the lid 5 attached high pressure pump 23, the communicates with the feed pump 20 and for fuel supply the injection system of the internal combustion engine. The sealing of the two camshafts 1, 2 against the cover 5 is not visible here in the cover 5 inserted here Shaft sealing rings reached. The camshafts 1, 2 can otherwise serve to drive a wide variety of units.

Claims (7)

  1. Camshaft mounting arrangement for mounting at least one camshaft (1) in the cylinder head (3) of an internal combustion engine, at least one camshaft bearing (16a) at one end (18) of the camshaft (1) being arranged in a removable housing part (5) of the internal combustion engine, the housing part, designed as a cover (5), forming an end wall (6) of the cylinder head (3) of the internal combustion engine closing off a timing chamber section (7) of the cylinder head (3),
    characterised in that
    the cover (5) has a flange region (19) on which a delivery pump (20), driven by the camshaft (1), is flange-mounted.
  2. Camshaft mounting arrangement as claimed in claim 1,
    characterised in that
    the delivery pump (20) is driven by the inlet-end camshaft (1).
  3. Camshaft mounting arrangement as claimed in claim 1 or 2,
    characterised in that
    the delivery pump (20) is used to convey fuel from the tank of the internal combustion engine.
  4. Camshaft mounting arrangement as claimed in claim 1,
    characterised in that
    the cover (5) extends so as to abut with a cylinder head hood.
  5. Camshaft mounting arrangement as claimed in claim 1,
    characterised in that
    the end-face camshaft bearing (16a) is a self-contained end shield.
  6. Camshaft mounting arrangement as claimed in claim 1,
    characterised in that
    in the end region (21), the camshaft (2) is provided with an integrally formed driving cover (22) for driving a high-pressure pump (23).
  7. Camshaft mounting arrangement as claimed in claim 1,
    characterised in that
    the cover (5) has a suspension eyelet (10) for transporting the internal combustion engine.
EP97121420A 1997-01-21 1997-12-05 Camshaft bearing arrangement in the cylinder head of an internal combustion engine Expired - Lifetime EP0854271B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19701874A DE19701874C5 (en) 1997-01-21 1997-01-21 Camshaft bearing assembly in the cylinder head of an internal combustion engine
DE19701874 1997-01-21

Publications (2)

Publication Number Publication Date
EP0854271A1 EP0854271A1 (en) 1998-07-22
EP0854271B1 true EP0854271B1 (en) 2001-10-31

Family

ID=7817868

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97121420A Expired - Lifetime EP0854271B1 (en) 1997-01-21 1997-12-05 Camshaft bearing arrangement in the cylinder head of an internal combustion engine

Country Status (3)

Country Link
US (1) US5934235A (en)
EP (1) EP0854271B1 (en)
DE (2) DE19701874C5 (en)

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DE19846586B4 (en) * 1998-10-09 2009-07-09 Audi Ag Method for producing a composite housing
JP3721468B2 (en) * 2002-03-11 2005-11-30 愛知機械工業株式会社 Cylinder head structure
US6953015B2 (en) * 2002-07-23 2005-10-11 Honda Giken Hogyo Kabushiki Kaisha Engine
DE10322306B4 (en) * 2003-05-17 2014-03-13 Daimler Ag Bearing of a cylinder head housing
US7395790B2 (en) * 2004-11-18 2008-07-08 S&S Cycle, Inc. Reed valve breather for evolution engine
JP2007002739A (en) * 2005-06-23 2007-01-11 Honda Motor Co Ltd Engine
JP2011127432A (en) * 2009-12-15 2011-06-30 Hitachi Automotive Systems Ltd Valve timing control apparatus cover and method of manufacturing the same
BR112016016910B1 (en) * 2014-01-24 2022-11-16 Eaton Intelligent Power Limited REFRIGERATION SYSTEM FOR COOLING PORTIONS OF AN AGRICULTURAL MACHINE, AIR SUPPLY SYSTEM FOR AN AGRICULTURAL MACHINE AND METHOD FOR COOLING PORTIONS OF AN AGRICULTURAL MACHINE
BR112016016908B1 (en) * 2014-01-24 2022-07-19 Eaton Intelligent Power Limited AIR SUPPLY SYSTEM FOR AN AGRICULTURAL MACHINE AND METHOD FOR COOLING AN ENGINE EXHAUST OF AN AGRICULTURAL MACHINE

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JPS59211754A (en) * 1983-05-18 1984-11-30 Honda Motor Co Ltd Fuel pump driver device of internal-combustion engine
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Also Published As

Publication number Publication date
DE19701874C1 (en) 1998-06-10
DE59705174D1 (en) 2001-12-06
US5934235A (en) 1999-08-10
DE19701874C5 (en) 2006-06-22
EP0854271A1 (en) 1998-07-22

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