DE3624612A1 - VALVE CONTROL FOR A PISTON PISTON COMBUSTION ENGINE - Google Patents
VALVE CONTROL FOR A PISTON PISTON COMBUSTION ENGINEInfo
- Publication number
- DE3624612A1 DE3624612A1 DE19863624612 DE3624612A DE3624612A1 DE 3624612 A1 DE3624612 A1 DE 3624612A1 DE 19863624612 DE19863624612 DE 19863624612 DE 3624612 A DE3624612 A DE 3624612A DE 3624612 A1 DE3624612 A1 DE 3624612A1
- Authority
- DE
- Germany
- Prior art keywords
- valve
- valve control
- groove
- rocker arm
- guide part
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/26—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder
-
- 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
- F01L2307/00—Preventing the rotation of tappets
-
- 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
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
- F02F1/4214—Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder
-
- 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
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F2001/244—Arrangement of valve stems in cylinder heads
- F02F2001/247—Arrangement of valve stems in cylinder heads the valve stems being orientated in parallel with the cylinder axis
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
Description
Die Erfindung bezieht sich auf eine Ventilsteuerung für eine Hubkolben-Brennkraftmaschine entsprechend dem Oberbegriff von Anspruch 1. Mit dieser Anordnung soll eine querkraftfreie Betätigung der Ventile erreicht werden.The invention relates to a valve control for a Reciprocating internal combustion engine according to the preamble of Claim 1. With this arrangement, a shear force-free Actuation of the valves can be achieved.
Bei einer gattungsbildenden Ventilsteuerung, die aus der DE-PS 12 98 103 bekannt ist, taucht der Kipphebel mit seinem ventilseitigen Arm in eine zentrisch zur Achse der zylindrischen Traversenführung liegenden Vertiefung auf der Oberseite der Traverse ein. Ein Verdrehen der Traverse soll offensichtlich dadurch verhindert werden, daß die Seitenwände der zentrischen Vertiefung an den Seitenflanken des Kipphebelarms geführt sind. Diese Seitenführung der Traverse ist auf einen sehr kurzen, mittig gelegenen Abschnitt ihrer Länge beschränkt. Daraus resultieren sehr kleine Hebelarme für die Verdrehsicherung der Traverse. Die kurzen Hebelarme in Verbindung mit dem funktionell erforderlichen Spiel zwischen den benachbarten Seitenwänden der Vertiefung und den Seitenflanken des Kipphebels ergeben einen untolerierbar großen Verschwenkwinkel der Traverse. Bei verschwenkter Traverse liegen aber die Druckpunkte zwischen Traverse und Ventilschaft seitlich versetzt zu den Ventilachsen. Dadurch entstehen Querkräfte, die die Ventilführung in unerwünschter Weise zusätzlich belasten.In the case of a generic valve control system which results from the DE-PS 12 98 103 is known, the rocker arm dips with his valve arm in a centric to the axis of the cylindrical truss guide lying recess on the Top of the traverse. A turning of the traverse should obviously be prevented by the side walls the central depression on the side flanks of the Rocker arm are guided. This side guide of the traverse is on a very short, central section of their Limited length. This results in very small lever arms for securing the crossbar against rotation. The short lever arms in connection with the functionally required game between the adjacent side walls of the recess and the Side flanks of the rocker arm result in an intolerable large swivel angle of the traverse. When swiveled But the crossbar are the pressure points between the crossbar and Valve stem offset laterally to the valve axes. Thereby lateral forces arise, which the valve guide in undesirable Additional burden.
Es ist deshalb Aufgabe der Erfindung, eine gattungsgemäße Ventilsteuerung zu schaffen, bei der sich trotz des funktionell erforderlichen Spiels in der die Seitenführung der Traverse bewirkenden Vorrichtung eine Verdrehsicherung der Traverse mit tolerierbar kleinem Verschwenkwinkel ergibt.It is therefore an object of the invention, a generic To create valve control, which despite the functionally required play in the side guide the device causing the traverse to prevent rotation the traverse results in a tolerably small swivel angle.
Diese Aufgabe wird erfindungsgemäß mit den kennzeichnenden Merkmalen von Anspruch 1 gelöst. Vorteilhafte Ausbildungen der Erfindung ergeben sich mit den Merkmalen der Ansprüche 2 bis 4. This object is achieved with the characteristic Features of claim 1 solved. Advantageous training The invention results from the features of claims 2 to 4.
Die mit der Erfindung erzielten Vorteile bestehen insbesondere darin, daß sich ein großer Hebelarm für die Verdrehsicherung der Traverse ergibt, daß die Paßgenauigkeit zwischen Führungsteil und Nut gering sein kann, ohne daß sich ein untolerierbarer Verschwenkwinkel der Traverse ergibt und daß die Druckpunktverschiebung zwischen Traverse und Ventilschaft in engen Grenzen bleibt, so daß keine betriebsgefährdenden Beanspruchungen der Ventilführung auftreten.The advantages achieved with the invention exist especially in the fact that there is a large lever arm for the Anti-rotation of the crossbar shows that the fit between the guide part and groove can be small without an intolerable pivoting angle of the cross member results and that the pressure point shift between traverse and Valve stem remains within narrow limits, so that none operational stresses on the valve guide occur.
Zwei Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden nachstehend näher beschrieben. Es zeigen:Two embodiments of the invention are in the drawing are shown and are described in more detail below. It demonstrate:
Fig. 1 Querschnitt eines Zylinderkopfes im Bereich eines Ventilpaares; Figure 1 cross section of a cylinder head in the region of a pair of valves.
Fig. 2 Teilschnitt nach der Linie II-II in Fig. 1. Fig. 2 partial section along the line II-II in FIG. 1.
In einem Zylinderkopf 11 einer nicht weiter dargestellten Hubkolben-Brennkraftmaschine ist die Ventilsteuerung für zwei Ventile 12, 13 angeordnet, die gemeinsam durch einen Kipphebel 14 betätigt werden. Der Kipphebel 14 wird ausgehend von einer nicht gezeigten Nockenwelle durch eine Stoßstange 15 bewegt. Die Bewegung des ventilseitigen Kipphebelarmes 16, wird durch ein Druckstück 17 auf eine Traverse 18 übertragen, die ihrerseits über Druckstücke 19, 20 mit den Schaftenden der Ventile 12, 13 zusammenwirkt. Die Traverse 18 wird parallel zu den Ventilachsen auf einem im Zylinderkopf 11 befestigten, zylindrischen Bolzen 21 geführt.In a cylinder head 11 of a reciprocating piston internal combustion engine, not shown, the valve control for two valves 12 , 13 is arranged, which are actuated together by a rocker arm 14 . Starting from a camshaft, not shown, the rocker arm 14 is moved by a bumper 15 . The movement of the valve-side rocker arm 16 is transmitted by a pressure piece 17 to a cross member 18 , which in turn interacts with the shaft ends of the valves 12 , 13 via pressure pieces 19 , 20 . The cross member 18 is guided parallel to the valve axes on a cylindrical bolt 21 fastened in the cylinder head 11 .
Damit die querkraftfreie Betätigung der Ventile erreicht wird, muß dafür gesorgt sein, daß die Traverse 18 im Betrieb keine Schwenkbewegung um die Achse des Bolzens 21 ausführen kann. Im Beispiel nach Fig. 1 besteht die Vorrichtung für die Verdrehsicherung in der Ausbildung einer Nut 22 an einem Ende der Traverse 18 außerhalb der Ventilachsen, die ein am Kipphebel 14 angeordnetes Führungsteil 23 gleitbar übergreift.So that the actuation of the valves without lateral force is achieved, it must be ensured that the traverse 18 can not execute a pivoting movement about the axis of the bolt 21 during operation. In the example according to FIG. 1, the device for securing against rotation consists in the formation of a groove 22 at one end of the crossmember 18 outside the valve axes, which slidably engages over a guide part 23 arranged on the rocker arm 14 .
Das im Bereich der Kipphebelnabe angeordnete Führungsteil 23, daß im Beispiel aus einer angeformten Rippe besteht, erstreckt sich so weit parallel zu den Ventilachsen in Bewegungsrichtung der Traverse 18, daß in allen Betriebsstellungen der Traverse 18 eine Überlappung zwischen Nut 22 und Führungsteil 23 gewährleistet ist.The guide part 23 arranged in the area of the rocker arm hub, which in the example consists of a molded rib, extends so far parallel to the valve axes in the direction of movement of the cross member 18 that an overlap between the groove 22 and the guide part 23 is ensured in all operating positions of the cross member 18 .
Die Vorrichtung für die Verdrehsicherung besitzt einen größeren Abstand zur Führungsachse der Traverse 18 - der Achse des Bolzens 21 - als die Druckstücke 19, 20. Der aus dem seitlichen Spiel zwischen Nut 22 und Führungsteil 23 resultierende mögliche Schwenkwinkel der Traverse 18 ergibt an den Druckstücken 19, 20 einen geringeren seitlichen Versatz gegenüber den Ventilachsen, als dem Maß des seitlichen Spiels zwischen Nut 22 und Führungsteil 23 entspricht.The device for securing against rotation is at a greater distance from the guide axis of the crossmember 18 - the axis of the bolt 21 - than the pressure pieces 19 , 20 . The possible swivel angle of the crossbeam 18 resulting from the lateral play between the groove 22 and the guide part 23 results in a smaller lateral offset on the pressure pieces 19 , 20 relative to the valve axes than the dimension of the lateral play between the groove 22 and the guide part 23 .
Vorteilhaft kann die Vorrichtung zur Verdrehsicherung der Traverse 18 auch so angeordnet werden, daß sie zwischen der Traverse 18 und einer benachbarten Gehäusewand 24 wirksam ist. Dabei kann z. B. ein Führungsteil 23′ an der entsprechenden Gehäusewand 24 und die zugehörige Nut 22′ am anderen Ende der Traverse 18 angeordnet sein, siehe strichpunktierte Darstellung in Fig. 1.The device for securing the cross member 18 against rotation can advantageously also be arranged such that it is effective between the cross member 18 and an adjacent housing wall 24 . Here, for. B. a guide member 23 'on the corresponding housing wall 24 and the associated groove 22 ' at the other end of the cross member 18 , see dash-dotted line in Fig. 1st
Claims (4)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19863624612 DE3624612A1 (en) | 1986-07-21 | 1986-07-21 | VALVE CONTROL FOR A PISTON PISTON COMBUSTION ENGINE |
EP87903246A EP0274483A1 (en) | 1986-07-21 | 1987-05-21 | Valve control for reciprocating piston internal combustion engine |
JP62503033A JPS63502683A (en) | 1986-07-21 | 1987-05-21 | Valve control device for reciprocating piston internal combustion engine |
PCT/DE1987/000232 WO1988000644A1 (en) | 1986-07-21 | 1987-05-21 | Valve control for reciprocating piston internal combustion engine |
ES8701697A ES2005617A6 (en) | 1986-07-21 | 1987-06-09 | Valve control for reciprocating piston internal combustion engine. |
CN198787104987A CN87104987A (en) | 1986-07-21 | 1987-07-21 | The valve control mechanism of internal-combustion piston engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19863624612 DE3624612A1 (en) | 1986-07-21 | 1986-07-21 | VALVE CONTROL FOR A PISTON PISTON COMBUSTION ENGINE |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3624612A1 true DE3624612A1 (en) | 1988-02-04 |
DE3624612C2 DE3624612C2 (en) | 1988-09-22 |
Family
ID=6305633
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19863624612 Granted DE3624612A1 (en) | 1986-07-21 | 1986-07-21 | VALVE CONTROL FOR A PISTON PISTON COMBUSTION ENGINE |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0274483A1 (en) |
JP (1) | JPS63502683A (en) |
CN (1) | CN87104987A (en) |
DE (1) | DE3624612A1 (en) |
ES (1) | ES2005617A6 (en) |
WO (1) | WO1988000644A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2633663A1 (en) * | 1988-06-30 | 1990-01-05 | Inst Francais Du Petrole | System for rotationally immobilising a valve |
DE4410122A1 (en) * | 1994-03-24 | 1995-09-28 | Schaeffler Waelzlager Kg | Device for simultaneous operation of two valves of combustion engine |
DE19539842A1 (en) * | 1995-10-26 | 1997-04-30 | Schaeffler Waelzlager Kg | Valve gear for internal combustion engine |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4404378C2 (en) * | 1993-02-20 | 2001-03-08 | Volkswagen Ag | Valve arrangement with a plurality of parallel-axis lift valves and a common actuation device |
SE528784C2 (en) * | 2005-06-07 | 2007-02-13 | Scania Cv Abp | Apparatus for transferring movement from a rocker arm to a valve device of an internal combustion engine and an internal combustion engine including such a device |
JP4540116B2 (en) * | 2006-02-13 | 2010-09-08 | Udトラックス株式会社 | Valve mechanism |
US7523729B2 (en) * | 2007-02-13 | 2009-04-28 | Gm Global Technology Operations, Inc. | Rocker assembly with adjustable swivel foot |
US8006661B2 (en) * | 2009-08-04 | 2011-08-30 | International Engine Intellectual Property Company, Llc | Bridge and pivot foot arrangement for operating engine cylinder valves |
CN102022151B (en) * | 2010-12-29 | 2012-07-04 | 潍柴动力扬州柴油机有限责任公司 | Valve bridge of engine valve driving mechanism |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB454761A (en) * | 1936-02-25 | 1936-10-07 | Joseph Maina | Improvements in or relating to valve mechanisms for internal combustion engines |
AT258041B (en) * | 1965-06-11 | 1967-11-10 | H C Hans Dipl Ing Dr Dr List | Valve drive for an internal combustion engine |
DE1906882A1 (en) * | 1969-02-12 | 1970-09-03 | Kloeckner Humboldt Deutz Ag | Device for actuating several valves in reciprocating internal combustion engines |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1298496A (en) * | 1970-07-16 | 1972-12-06 | English Electric Diesels Ltd | Improvements in and relating to internal combustion engine valve gear |
DE2055665A1 (en) * | 1970-11-12 | 1972-05-18 | Süddeutsche Bremsen-AG, 8000 München | Device for actuating valves of internal combustion engines arranged in pairs |
JPS4726732U (en) * | 1971-04-12 | 1972-11-27 | ||
JPS4812802U (en) * | 1971-06-22 | 1973-02-13 | ||
FR2553823B3 (en) * | 1983-10-25 | 1986-01-03 | Renault | VALVE TAPPETER FOR INTERNAL COMBUSTION ENGINES AND OVERHEAD CAMSHAFTS |
IT1182480B (en) * | 1985-07-02 | 1987-10-05 | Fiat Auto Spa | TAPPING SYSTEM FOR INTERNAL COMBUSTION ENGINES EQUIPPED WITH SHAFTS WITH VARIABLE PROFILE CAMS |
-
1986
- 1986-07-21 DE DE19863624612 patent/DE3624612A1/en active Granted
-
1987
- 1987-05-21 EP EP87903246A patent/EP0274483A1/en not_active Withdrawn
- 1987-05-21 JP JP62503033A patent/JPS63502683A/en active Pending
- 1987-05-21 WO PCT/DE1987/000232 patent/WO1988000644A1/en not_active Application Discontinuation
- 1987-06-09 ES ES8701697A patent/ES2005617A6/en not_active Expired
- 1987-07-21 CN CN198787104987A patent/CN87104987A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB454761A (en) * | 1936-02-25 | 1936-10-07 | Joseph Maina | Improvements in or relating to valve mechanisms for internal combustion engines |
AT258041B (en) * | 1965-06-11 | 1967-11-10 | H C Hans Dipl Ing Dr Dr List | Valve drive for an internal combustion engine |
DE1906882A1 (en) * | 1969-02-12 | 1970-09-03 | Kloeckner Humboldt Deutz Ag | Device for actuating several valves in reciprocating internal combustion engines |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2633663A1 (en) * | 1988-06-30 | 1990-01-05 | Inst Francais Du Petrole | System for rotationally immobilising a valve |
DE4410122A1 (en) * | 1994-03-24 | 1995-09-28 | Schaeffler Waelzlager Kg | Device for simultaneous operation of two valves of combustion engine |
DE4410122C2 (en) * | 1994-03-24 | 2003-05-08 | Ina Schaeffler Kg | Connection of a guide rail of a valve actuation device to a camshaft bearing |
DE19539842A1 (en) * | 1995-10-26 | 1997-04-30 | Schaeffler Waelzlager Kg | Valve gear for internal combustion engine |
Also Published As
Publication number | Publication date |
---|---|
EP0274483A1 (en) | 1988-07-20 |
CN87104987A (en) | 1988-02-03 |
DE3624612C2 (en) | 1988-09-22 |
JPS63502683A (en) | 1988-10-06 |
WO1988000644A1 (en) | 1988-01-28 |
ES2005617A6 (en) | 1989-03-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
D2 | Grant after examination | ||
8363 | Opposition against the patent | ||
8330 | Complete disclaimer |