DE2428915A1 - V. engine exhaust and inlet valve adjustment system - has single eccentric shaft for both inlet and exhaust - Google Patents

V. engine exhaust and inlet valve adjustment system - has single eccentric shaft for both inlet and exhaust

Info

Publication number
DE2428915A1
DE2428915A1 DE2428915A DE2428915A DE2428915A1 DE 2428915 A1 DE2428915 A1 DE 2428915A1 DE 2428915 A DE2428915 A DE 2428915A DE 2428915 A DE2428915 A DE 2428915A DE 2428915 A1 DE2428915 A1 DE 2428915A1
Authority
DE
Germany
Prior art keywords
inlet
valve
piston
valve adjustment
eccentric 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.)
Withdrawn
Application number
DE2428915A
Other languages
German (de)
Inventor
Werner Altmann
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.)
Daimler Benz AG
Original Assignee
Daimler Benz 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
Priority claimed from DE2363891A external-priority patent/DE2363891A1/en
Application filed by Daimler Benz AG filed Critical Daimler Benz AG
Priority to DE2428915A priority Critical patent/DE2428915A1/en
Publication of DE2428915A1 publication Critical patent/DE2428915A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D13/0203—Variable control of intake and exhaust valves
    • F02D13/0207—Variable control of intake and exhaust valves changing valve lift or valve lift and timing
    • 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
    • F01L1/12—Transmitting gear between valve drive and 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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0063—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of cam contact point by displacing an intermediate lever or wedge-shaped intermediate element, e.g. Tourtelot
    • 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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0063—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of cam contact point by displacing an intermediate lever or wedge-shaped intermediate element, e.g. Tourtelot
    • F01L2013/0068—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of cam contact point by displacing an intermediate lever or wedge-shaped intermediate element, e.g. Tourtelot with an oscillating cam acting on the valve of the "BMW-Valvetronic" type
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

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

Abstract

The design is an improvement to 2363891 and permits the use of a single eccentre shaft to actuate both inlet and exhaust valves. The valve operating shaft (2) has a crank (3) which when rotated lifts and lowers a connected bar (4). The bar has a roller (6) on one side of its free end and a cam face (5) on the opposite. The cam face presses against a rocker arm (7) pivoting on a shaft (17) to open and close the exhaust or inlet valve in the usual way. The connected rod roller presses against a wedge shaped piston (9) which is located in a bore in the valve cover housing and secured by a spring loaded set screw (15). The wedge shaped piston is able to slide in its boring corresponding to the position of the eccentre shaft fitted above the piston.

Description

Daimler-Benz Aktiengesellschaft Palm 10 272A Daimler-Benz Aktiengesellschaft Palm 10 272A Stuttgart-Untertürkheim I^. JuniStuttgart-Untertürkheim I ^. June

Ventilvereteilung für Brennkraftmaschinen (Zusatz zu P 23 6j 891.7 Daim 9892/4)Valve distribution for internal combustion engines (addition to P 23 6j 891.7 Daim 9892/4)

Die Erfindung betrifft ein© Ventilverstellung für Brennkraftmaschinen, insbesondere mit V-förmiger Ventilanordnung, bestehend aus einer als Kurbelwell· ausgebildeten Antriebswelle, die eine angelenkte Stange mit einem balligen Ende und einer an diesem gelagerten Rolle zwischen einer Stützwand und einem keilförmigen Verstellglied hin- und herbewegt, aus einen schwenkbar gelagerten Hebel und aus je einer Exzenterwelle zum Steuern von Hub und Öffnungszeit für Ein- und Aulaß unter Beibehaltung der Lage der Symmetrieachse im Steuerungsdiagramm flir die Auf- und Abwärtsbewegung des Ventiles, nach Patent .... (Patentanmeldung P 23 6j 891.7)·The invention relates to a valve adjustment for internal combustion engines, in particular with a V-shaped valve arrangement, consisting of a drive shaft designed as a crankshaft, which moves an articulated rod with a spherical end and a roller mounted on this back and forth between a support wall and a wedge-shaped adjusting member , from a pivoted lever and from an eccentric shaft each to control the stroke and opening time for inlet and outlet while maintaining the position of the axis of symmetry in the control diagram for the up and down movement of the valve, according to patent ... (patent application P 23 6j 891.7)

Aufgabe der Erfindung ist es, die Ventilverstellung nach dem Hauptpatent weiter zu vereinfachen und dadurch zu verbilligen.The object of the invention is to further simplify the valve adjustment according to the main patent and thereby make it cheaper.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Exzenterwellen zum Steuern von Ein- und Auslaß durch eine einzige oberhalb der Kurbelwelle in der Mittelebene angeordnete Exzenterwelle ersetzt sind. Dies bringt den Vorteil, daß übertragungshebel u.a. Teile entfallen und eine besonders» kompakte Bauform erreicht wird.This object is achieved in that the eccentric shafts for controlling the inlet and outlet by a only eccentric shaft arranged above the crankshaft in the center plane are replaced. This has the advantage that transmission levers and other parts are omitted and a particularly » compact design is achieved.

509881/0206 # 509881/0206 #

- 2 - Daim 10 272A - 2 - Daim 10 272A

Ferner kann der schwenkbar gelagerte Hebel als doppelärmiger Hebel und ein Ende desselben als Stützwand ausgebildet sein. Der doppelarmige Hebel kann eine bekannte Einrichtung zum Ausgleich des Ventil-Spieles aufweisen.Furthermore, the pivotably mounted lever can be double-armed Lever and one end of the same can be designed as a support wall. The double-armed lever can be a known device for Have compensation of the valve clearance.

Des weiteren kann das keilförmige Verstellglied als verschiebbarer und drehgesicherter Kolben in einer Bohrung gelagert sein.Furthermore, the wedge-shaped adjusting member can be displaceable and rotatably secured piston be mounted in a bore.

Darüber hinaus kann der Kolben von einer Feder gegen die Exzenterwelle gehalten werden.In addition, the piston can be pressed against the eccentric shaft by a spring being held.

Wird als Drehsicherung für den Kolben z.B. ein Schraubenbolzen verwendet, kann dieser gleichzeitig als Führung für die Feder dienen.If, for example, a screw bolt is used as a rotation lock for the piston, this can also be used as a guide for serve the spring.

Schließlich kann die Bohrung für den Kolben außerhalb der Mittelebene von Ein- und Auslaß angeordnet sein.Finally, the bore for the piston can be arranged outside the center plane of the inlet and outlet.

Die Erfindung ist anhand eines in der Zeichnung dargestellten AusfUhrungsbeispieles näher erläutert.The invention is illustrated by means of one in the drawing AusfUhrungsbeispieles explained in more detail.

Die Fig. zeigt eine Querschnitt-Ansicht im Bereich des Einlaßventiles. der erfindungsgemäßen Ventilverstellung.The figure shows a cross-sectional view in the area of the inlet valve. the valve adjustment according to the invention.

Bei der in der Fig. dargestellten Ventilverstellung ist im Gehäuse 1 eine Kurbelwelle 2 gelagert, an deren Kurbel 3 eine Stange k angelenkt ist. Die Stange k ist am freien Ende 5 ballig ausgeführt und trägt eine Rolle 6. Das freie Ende mit der Rolle 6 wird durch die Kurbel 3 zwischen eine an einen doppelärmigen Hebel 7 angeformte Stützwand 8 und einem keilförmig auegebildeten Kolben 9 hin- und herbewegt. HierbeiIn the valve adjustment shown in the figure, a crankshaft 2 is mounted in the housing 1, to the crank 3 of which a rod k is articulated. The rod k is convex at the free end 5 and carries a roller 6. The free end with the roller 6 is moved back and forth by the crank 3 between a support wall 8 formed on a double-armed lever 7 and a wedge-shaped piston 9. Here

509881/0206509881/0206

- 3 - Daim 10 272Λ - 3 - Daim 10 272Λ

gleitet vorzugsweise das ballige Ende 5 an der Stützwand 8 des Hebels 7 entlang, während die Rolle 6 auf der keilförmigen Bahn 10 des Kolbens 9 abrollt.preferably slides the convex end 5 on the support wall 8 of the lever 7 along, while the roller 6 on the wedge-shaped Path 10 of the piston 9 rolls off.

Der Kolben 9 ist verschiebbar in einer Bohrung 11 im Gehäuse 1 gelagert. Die Stirnseite 12 des Kolbens 9 wird durch eine Feder 13, die in einer Bohrung 1k untergebracht ist, wobei sich die Feder 13 an einen Schraubenbolzen 15 abstützt, gegen eine Exzenterwelle 16 gehalten. Der Schraubenbolzen 15 dient gleichzeitig als Sicherung gegen Verdrehen des Kolbens 9·The piston 9 is slidably mounted in a bore 11 in the housing 1. The end face 12 of the piston 9 is held against an eccentric shaft 16 by a spring 13 which is accommodated in a bore 1 k , the spring 13 being supported on a screw bolt 15. The screw bolt 15 also serves as a safeguard against twisting of the piston 9

Der doppelarmige· Hebel 7 ist um eine Achse 17 im Gehäuse 1 gelagert und wirkt mit einem Ende 18 gegen das Ventil 19. Im Ende 18 des Hebels 7 kann eine bekannte Einrichtung 20 zum Ausgleich des Spieles untergebracht sein.The double-armed lever 7 is mounted about an axis 17 in the housing 1 and acts with one end 18 against the valve 19. In the end 18 of the lever 7, a known device 20 for Compensation of the game be accommodated.

Je nach Stellung der Exzenterwelle 16 und somit des Kolbens 9 wird die Rolle 6 mehr oder weniger weit auf der keilförmigen Bahn 10 des Kolbens abrollen und die Stützwand 8 und somit den Hebel 7 zum Ausschwenken und zum Betätigen des Ventiles 19 veranlassen. Die Bohrung 11, welche als Lagerung für den Kolben 9 dient, ist vorzugsweise außerhalb der Mittelebene·21 angeordnet. Dadurch ist die Möglichkeit gegeben für die Betätigung von Einlaß- und Auslaß die gleichen Teile in spiegelbildlicher Anordnung zu verwenden. Das Ventil 19 wird durch eine Feder 22 gegen eine bekannte Einrichtung 20 zum Ausgleich des Spieles, die im Hebel 7 untergebracht ist, gehalten.Depending on the position of the eccentric shaft 16 and thus of the piston 9, the roller 6 is more or less far on the wedge-shaped Roll off the path 10 of the piston and the support wall 8 and thus the lever 7 for pivoting out and for actuating the valve 19 cause. The bore 11, which serves as a bearing for the piston 9, is preferably outside the center plane * 21 arranged. This gives the opportunity to operate the inlet and outlet the same parts in a mirror image Arrangement to use. The valve 19 is by a spring 22 against a known device 20 for compensation of the game, which is housed in the lever 7, held.

509881/0206509881/0206

Claims (2)

- h - Daim 10 272A - h - Daim 10 272A AnsprücheExpectations . Ventilverstellung für Brennkraftmaschinen, insbesondere mit V-förmiger Ventilanordnung, bestehend aus einer als Kurbelwelle ausgebildeten Antriebswelle die eine ange- * lenkte Stange mit einem balligen Ende und einer an diesem gelagerten Rolle" zwischen einer Stützwand und einem keilförmigen Verstellglied hin- und herbewegt, aus einem schwenkbar gelagerten Hebel und aus je einer Exzenterwelle zum Steuern von Hub und Öffnungszeit für Ein- und Auslaß unter Beibehaltung der Symmetrieachse im Steuerungsdiagramm für die Auf- und Abwärtsbewegung des Ventiles nach Patent ... (Patentanmeldung P 23 63 891.7), dadurch gekennzeichnet, daß die Exzenterwellen zum Steuern von Ein- und Auslaß durch eine einzige oberhalb der Kurbelwell· (2) in der Mittelebene (21) angeordnete Exzenterwelle (16) ersetzt sirid.. Valve adjustment for internal combustion engines, in particular with V-shaped valve arrangement, consisting of a drive shaft designed as a crankshaft with one attached * steered rod with a spherical end and a roller mounted on this "between a support wall and a wedge-shaped adjusting element moved back and forth, consisting of a pivoted lever and an eccentric shaft each to control the stroke and opening time for and outlet while maintaining the axis of symmetry in the control diagram for the upward and downward movement of the valve according to patent ... (patent application P 23 63 891.7), characterized in that the eccentric shafts for controlling the inlet and outlet by a single one above the crankshaft (2) in the central plane (21) arranged eccentric shaft (16) replaces sirid. 2. Ventilverstellung nach Anspruch 1, dadurch gekennzeichnet, daß der schwenkbar gelagerte Hebel als doppelarmiger Hebel (7) und ein Ende desselben als Stützwand (8) ausgebildet ist.2. Valve adjustment according to claim 1, characterized in that that the pivotably mounted lever is designed as a double-armed lever (7) and one end of the same as a support wall (8) is. 3- Ventilverstellung nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß das keilförmige VerstellgÜed als verschiebbarer und drehgesicherter Kolben (9) in einer Bohrung (ii) gelagert ist.3- valve adjustment according to claims 1 and 2, thereby characterized in that the wedge-shaped VerstellgÜed as a displaceable and rotationally secured piston (9) in one Bore (ii) is mounted. h. Ventilverstellung nach den Ansprüchen 1 bis 3» dadurch gekennzeichnet, daß der Kolben (9) von einer Feder (13) gegen die Exzenterwelle (16) gehalten wird. H. Valve adjustment according to Claims 1 to 3 »characterized in that the piston (9) is held against the eccentric shaft (16) by a spring (13). 5· Ventilverstellung nach den Ansprüchen 1 bis k, dadurch gekennzeichnet, daß die Bohrung (ii) für den Kolben (9) außerhalb der Mittelebene (21) von Ein- und .Auslaß angeordnet ist.5. Valve adjustment according to claims 1 to k, characterized in that the bore (ii) for the piston (9) is arranged outside the central plane (21) of the inlet and outlet. 509881/0206509881/0206
DE2428915A 1973-12-21 1974-06-15 V. engine exhaust and inlet valve adjustment system - has single eccentric shaft for both inlet and exhaust Withdrawn DE2428915A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2428915A DE2428915A1 (en) 1973-12-21 1974-06-15 V. engine exhaust and inlet valve adjustment system - has single eccentric shaft for both inlet and exhaust

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2363891A DE2363891A1 (en) 1973-07-13 1973-12-21 Valve control system for ic engine - valve rod is controlled by action of lever on adjustable curved surface
DE2428915A DE2428915A1 (en) 1973-12-21 1974-06-15 V. engine exhaust and inlet valve adjustment system - has single eccentric shaft for both inlet and exhaust

Publications (1)

Publication Number Publication Date
DE2428915A1 true DE2428915A1 (en) 1976-01-02

Family

ID=5918204

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2428915A Withdrawn DE2428915A1 (en) 1973-12-21 1974-06-15 V. engine exhaust and inlet valve adjustment system - has single eccentric shaft for both inlet and exhaust

Country Status (1)

Country Link
DE (1) DE2428915A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002006642A1 (en) * 2000-07-18 2002-01-24 Thyssen Krupp Automotive Ag Valve lift controllers
US6360971B1 (en) 1998-11-25 2002-03-26 Alstom Method and appliance for atomizing liquid fuel for a firing installation
EP1215369A2 (en) 2000-12-12 2002-06-19 Jenbacher Aktiengesellschaft Variable hydraulic valve drive
DE102005010182A1 (en) * 2005-03-03 2006-09-21 Entec Consulting Gmbh Variable mechanical valve control for internal combustion engine has intermediate lever, which is connected to valve push rod by means of shaft, such that slide gate roller, is displaced by camshaft in slide gate
US7603973B2 (en) 2005-03-03 2009-10-20 Hydraulik-Ring Gmbh Variable mechanical valve control for an internal combustion engine
DE102017208195A1 (en) * 2017-05-16 2018-11-22 Bayerische Motoren Werke Aktiengesellschaft Cylinder head assembly for an internal combustion engine and internal combustion engine
DE102017208467A1 (en) * 2017-05-19 2018-11-22 Bayerische Motoren Werke Aktiengesellschaft Method for assembling a finger lever switch module
DE102017213590A1 (en) * 2017-08-04 2019-02-07 Mahle International Gmbh Cylinder head cover

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6360971B1 (en) 1998-11-25 2002-03-26 Alstom Method and appliance for atomizing liquid fuel for a firing installation
WO2002006642A1 (en) * 2000-07-18 2002-01-24 Thyssen Krupp Automotive Ag Valve lift controllers
EP1215369A2 (en) 2000-12-12 2002-06-19 Jenbacher Aktiengesellschaft Variable hydraulic valve drive
DE102005010182A1 (en) * 2005-03-03 2006-09-21 Entec Consulting Gmbh Variable mechanical valve control for internal combustion engine has intermediate lever, which is connected to valve push rod by means of shaft, such that slide gate roller, is displaced by camshaft in slide gate
US7603973B2 (en) 2005-03-03 2009-10-20 Hydraulik-Ring Gmbh Variable mechanical valve control for an internal combustion engine
US7624711B2 (en) 2005-03-03 2009-12-01 Hydraulik-Ring Gmbh Variable mechanical valve control for an internal combustion engine
DE102005010182B4 (en) * 2005-03-03 2016-05-25 Kolbenschmidt Pierburg Innovations Gmbh Variable mechanical valve control of an internal combustion engine
DE102017208195A1 (en) * 2017-05-16 2018-11-22 Bayerische Motoren Werke Aktiengesellschaft Cylinder head assembly for an internal combustion engine and internal combustion engine
DE102017208467A1 (en) * 2017-05-19 2018-11-22 Bayerische Motoren Werke Aktiengesellschaft Method for assembling a finger lever switch module
DE102017213590A1 (en) * 2017-08-04 2019-02-07 Mahle International Gmbh Cylinder head cover

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8141 Disposal/no request for examination