DE102004022832B4 - Valve train for an internal combustion engine - Google Patents
Valve train for an internal combustion engine Download PDFInfo
- Publication number
- DE102004022832B4 DE102004022832B4 DE102004022832.9A DE102004022832A DE102004022832B4 DE 102004022832 B4 DE102004022832 B4 DE 102004022832B4 DE 102004022832 A DE102004022832 A DE 102004022832A DE 102004022832 B4 DE102004022832 B4 DE 102004022832B4
- Authority
- DE
- Germany
- Prior art keywords
- valves
- sliding
- actuating elements
- cam
- valve train
- 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
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 11
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000005755 formation reaction Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Images
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
- 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
- F01L13/0036—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 the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
-
- 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
- F01L1/20—Adjusting or compensating clearance
- F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
- F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
- F01L1/245—Hydraulic tappets
- F01L1/25—Hydraulic tappets between cam and valve stem
-
- 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
- F01L13/0036—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 the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
- F01L2013/0052—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 the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction with cams provided on an axially slidable sleeve
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Ventiltrieb für eine Brennkraftmaschine, umfassend eine Nockenwelle (3) mit einer Schiebenockeneinrichtung (4), die nebeneinander liegende, auf zwei Ventile (24 und 25) einwirkende Nockenbahnen (5, 6 und 7) mit unterschiedlichen Nockenformen (NI, NII, NIII) und Hubkurven (11, 12) besitzt, welche Hubkurven (11, 12) mit Steuerstifte (17, 18, 19, 20) aufweisenden Betätigungselementen zur Verstellung der Schiebenockeneinrichtung (4) zusammenarbeiten, wobei die Nockenbahnen (5, 6 und 7) der auf der Nockenwelle (3) gelagerten Schiebenockeneinrichtung (4) über mindestens ein Gleitelement (23) die zwei Ventile (24 und 25) betätigen, dadurch gekennzeichnet, dass genau ein Gleitelement (23) für die zwei Ventile (24 und 25) vorgesehen ist, wobei das Gleitelement (23) einen von den Nockenbahnen (5, 6 und 7) beeinflussbaren Gleitzapfen (26) und Betätigungselemente (27 und 28), für die zwei Ventile (24 und 25) aufweist, wobei der Gleitzapfen (26) und die Betätigungselemente (27 und 28) für die zwei Ventile (24 und 25) aus einem Stück hergestellt sind, wobei der Gleitzapfen (26) und die Betätigungselemente (27 und 28) für die zwei Ventile (24 und 25) ein T-förmiges Gebilde verkörpern, wobei freie Enden (31 und 32) der nach Art von Armen (29 und 30) ausgebildeten Betätigungselemente (27 und 28) für die zwei Ventile (24 und 25) kreisförmige Kontaktebenen (33 und 34) aufweisen, wobei zwischen den Kontaktebenen (33 und 34) der Betätigungselemente (27 und 28) für die zwei Ventile (24 und 25) und den zwei Ventilen (24 und 25) Stößel (37 und 38) vorgesehen sind.Valve train for an internal combustion engine, comprising a camshaft (3) with a sliding cam device (4), the adjacent cam tracks (5, 6 and 7) acting on two valves (24 and 25) with different cam shapes (NI, NII, NIII) and Stroke curves (11, 12), which stroke curves (11, 12) cooperate with control pins (17, 18, 19, 20) having actuating elements for adjusting the sliding cam device (4), the cam tracks (5, 6 and 7) on the Camshaft (3) mounted slide cam device (4) actuate the two valves (24 and 25) via at least one sliding element (23), characterized in that exactly one sliding element (23) is provided for the two valves (24 and 25), the The sliding element (23) has a sliding pin (26) and actuating elements (27 and 28), which can be influenced by the cam tracks (5, 6 and 7), for the two valves (24 and 25), the sliding pin (26) and the actuating elements (27 and 28) for the two valves (24 and 25) are made in one piece, the slide pin (26) and the actuating elements (27 and 28) for the two valves (24 and 25) embodying a T-shaped structure, with free ends (31 and 32) of the actuating elements (27 and 28) designed in the manner of arms (29 and 30) for the two valves (24 and 25) have circular contact planes (33 and 34), wherein between the contact planes (33 and 34) of the actuating elements (27 and 28) tappets (37 and 38) are provided for the two valves (24 and 25) and the two valves (24 and 25).
Description
Die Erfindung betrifft einen Ventiltrieb für eine Brennkraftmaschine nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a valve train for an internal combustion engine according to the preamble of patent claim 1.
Es ist ein Ventiltrieb für eine Brennkraftmaschine bekannt,
Es ist eine vergleichbare Schiebenockeneinrichtung, die Hubkurven mit unterschiedlichen Hubkurvensektionen aufweist, bekannt. Letztere sichern einen ruckfreien Verlauf der Verstellung der Schiebenockeneinrichtung zur Schaltung der verschiedenen Nockenbahnen.A comparable sliding cam device is known which has lifting curves with different lifting curve sections. The latter ensure a smooth course of the adjustment of the sliding cam device for switching the various cam tracks.
Ein gattungsgemäßer Ventiltrieb ist aus der deutschen Offenlegungsschrift
Aufgabe der Erfindung ist es, eine Schiebnockeneinrichtung für einen Ventiltrieb einer Brennkraftmaschine zu schaffen, welche Schiebenockeneinrichtung bei räumlich günstiger Anordnung auf der Nockenwelle über ihre Hubkurven funktionsgerecht mit den Ventilen zusammenarbeitet.The object of the invention is to provide a slide cam device for a valve train of an internal combustion engine, which slide cam device cooperates with the valves in a functionally appropriate manner via its stroke curves with a spatially advantageous arrangement on the camshaft.
Nach der Erfindung wird diese Aufgabe durch die Merkmale des Patentanspruchs gelöst. Weitere, die Erfindung ausgestaltende Merkmale sind in den Unteransprüchen enthalten.According to the invention, this object is achieved by the features of the patent claim. Further features embodying the invention are contained in the subclaims.
Die mit der Erfindung hauptsächlich erzielten Vorteile sind darin zu sehen, dass das im Aufbau einfache Gleitelement, das zwischen den Nockenbahnen und den Ventilen wirksam ist, zu einer vorbildlichen Übertragung der Rotationsbewegungen in Hubbewegungen beiträgt. Das Gleitelement, umfassend einen Gleitzapfen und Betätigungselemente, ist nicht nur konstruktiv, sondern auch produktionstechnisch leicht umsetzbar. Die Funktion dieses Ventiltriebs wird noch dadurch unterstützt, dass zwischen dem Gleitelement und den Ventilen Stößel vorgesehen sind. Schließlich schafft die Anordnung der Lager für die Nockenwelle d.h. beiderseits der Schiebenockeneinrichtung günstige räumliche Verhältnisse.The main advantages achieved with the invention can be seen in the fact that the constructionally simple sliding element, which is effective between the cam tracks and the valves, contributes to an exemplary transmission of the rotational movements in lifting movements. The sliding element, comprising a sliding pin and actuating elements, is not only easy to construct, but also easy to implement in terms of production technology. The function of this valve train is supported by the fact that tappets are provided between the sliding element and the valves. Finally, the arrangement of the bearings for the camshaft i.e. favorable spatial conditions on both sides of the sliding cam device.
In der Zeichnung wird ein Ausführungsbeispiel der Erfindung gezeigt, das nachstehend näher beschrieben wird.In the drawing, an embodiment of the invention is shown, which will be described in more detail below.
Es zeigen
-
1 einen Längsschnitt durch einen Zylinderkopf einer Brennkraftmaschine mit dem Ventiltrieb nach der Erfindung, -
2 eine Ansicht von oben auf ein Gleitelement nach der Erfindung.
-
1 2 shows a longitudinal section through a cylinder head of an internal combustion engine with the valve train according to the invention, -
2nd a top view of a sliding element according to the invention.
Von einer Brennkraftmaschine
Um die Schiebenockeneinrichtung
Die Nockenbahnen
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004022832.9A DE102004022832B4 (en) | 2004-05-08 | 2004-05-08 | Valve train for an internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004022832.9A DE102004022832B4 (en) | 2004-05-08 | 2004-05-08 | Valve train for an internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102004022832A1 DE102004022832A1 (en) | 2005-12-01 |
DE102004022832B4 true DE102004022832B4 (en) | 2020-03-26 |
Family
ID=35267372
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102004022832.9A Expired - Lifetime DE102004022832B4 (en) | 2004-05-08 | 2004-05-08 | Valve train for an internal combustion engine |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102004022832B4 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006012386B3 (en) * | 2006-03-15 | 2007-08-30 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Valve gear for internal combustion engine, has cam connected with cam shaft in torque-proof manner, and another cam supported on cam shaft, where latter cam is connectable and separable with former cam by controllable main locking piston |
DE102007051739A1 (en) * | 2007-10-30 | 2009-05-07 | Schaeffler Kg | Valve gear of an internal combustion engine |
DE102008029325A1 (en) * | 2008-06-20 | 2009-12-24 | Daimler Ag | Valve drive device |
DE102008029349A1 (en) * | 2008-06-20 | 2009-12-24 | Daimler Ag | Valve drive device |
DE102009015486A1 (en) | 2009-03-28 | 2010-09-30 | Schaeffler Technologies Gmbh & Co. Kg | Electromagnetic actuator comprises housing with electrically energized magnetic coil device, and magnetic coil device generates magnetic field, where stationary core area is commonly assigned to permanent magnets |
DE102010013216B4 (en) | 2009-04-04 | 2022-04-28 | Schaeffler Technologies AG & Co. KG | Valve train of an internal combustion engine |
DE102011101400B4 (en) | 2011-05-13 | 2013-02-07 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Valve train for internal combustion engines for actuating gas exchange valves |
DE102011078434A1 (en) * | 2011-06-30 | 2013-01-03 | Schaeffler Technologies AG & Co. KG | Mounting a camshaft by means of rolling bearings |
DE102015216384A1 (en) | 2015-08-27 | 2017-03-02 | Schaeffler Technologies AG & Co. KG | Valve train construction group for an internal combustion engine |
DE102016206065A1 (en) | 2016-04-12 | 2017-10-12 | Schaeffler Technologies AG & Co. KG | Valve train construction group for an internal combustion engine |
DE102019114046A1 (en) * | 2019-05-27 | 2020-12-03 | Bayerische Motoren Werke Aktiengesellschaft | Valve drive for an internal combustion engine of a motor vehicle, internal combustion engine, motor vehicle and use of a valve drive |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4230809A1 (en) * | 1992-09-02 | 1994-03-03 | Steckhan Helmut Prof Dr | Control for several, simultaneously actuatable valves in group - has yoke-shape transverse secured to valves or their stems, with single cam for valve group. |
EP0798451B1 (en) * | 1996-03-25 | 1999-04-21 | Dr.Ing.h.c. F. Porsche Aktiengesellschaft | Valve control of an internal combustion engine |
US5988128A (en) * | 1997-03-27 | 1999-11-23 | Toyota Jidosha Kabushiki Kaisha | Valve driving apparatus for engine |
DE10148177A1 (en) * | 2001-09-28 | 2003-04-17 | Ina Schaeffler Kg | Valve drive with valve stroke reversal for gas exchange valves of 4-stroke IC engines has slide grooves extending across each other due to location at small relative distance, to reduce axial space requirement |
-
2004
- 2004-05-08 DE DE102004022832.9A patent/DE102004022832B4/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4230809A1 (en) * | 1992-09-02 | 1994-03-03 | Steckhan Helmut Prof Dr | Control for several, simultaneously actuatable valves in group - has yoke-shape transverse secured to valves or their stems, with single cam for valve group. |
EP0798451B1 (en) * | 1996-03-25 | 1999-04-21 | Dr.Ing.h.c. F. Porsche Aktiengesellschaft | Valve control of an internal combustion engine |
US5988128A (en) * | 1997-03-27 | 1999-11-23 | Toyota Jidosha Kabushiki Kaisha | Valve driving apparatus for engine |
DE10148177A1 (en) * | 2001-09-28 | 2003-04-17 | Ina Schaeffler Kg | Valve drive with valve stroke reversal for gas exchange valves of 4-stroke IC engines has slide grooves extending across each other due to location at small relative distance, to reduce axial space requirement |
Also Published As
Publication number | Publication date |
---|---|
DE102004022832A1 (en) | 2005-12-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1503048A1 (en) | Valve drive for an internal combustion engine | |
DE102004022832B4 (en) | Valve train for an internal combustion engine | |
DE19908286B4 (en) | Variable valve control for internal combustion engines | |
EP0712462B1 (en) | Rocker assembly with interconnectable arms | |
DE102007052249B4 (en) | Internal combustion engine valve train switching device | |
EP0779411B1 (en) | Valve driving device for an internal combustion engine | |
EP1609961A1 (en) | Valve actuating element for two valves having hydraulic lash adjusters | |
EP3434871A1 (en) | Sliding cam system | |
DE19730814A1 (en) | Periodically actuated valve gear for gas or fluid exchange | |
DE10312961C5 (en) | Device for the variable actuation of gas exchange valves of internal combustion engines | |
DE102016212480A1 (en) | Variable valve train of a combustion piston engine | |
DE102009006894A1 (en) | Device for switching operation of a hydraulic valve clearance compensation element | |
DE102005058548B4 (en) | Valve drive for an internal combustion engine | |
DE4334395C2 (en) | Cam switching mechanism for motors | |
DE10006015A1 (en) | Variable valve drive for load control of separately ignited IC engine pref. fully variable drive for throttle free engine control and drive is arranged between lifting facility | |
EP2668376B1 (en) | Variable valve drive | |
DE102007020107A1 (en) | Spacing cam valve-drive for combustion engine, uses cam follower unit with deactivation capability for valve switch-off | |
DE102004022833A1 (en) | Valve train for internal combustion engine, has valves with respective cam units having cam tracks, tappets provided between cam tracks and valves and transmission pivots made of single piece with housings of tappets | |
DE102011109676A1 (en) | Internal combustion engine, has camshaft bearing channels formed in intake and outlet flange surfaces, and actuator unit including actuator, where actuator unit is provided in oil chamber to control operating unit between camshafts | |
DE102007054977A1 (en) | Valve drive device | |
DE4100763A1 (en) | DEVICE FOR ACTUATING THE VALVES OF A PISTON PISTON ENGINE | |
DE19720900B4 (en) | Internal combustion engine with a valve drive for globe valves | |
DE102018112815A1 (en) | Variable valve train of a reciprocating internal combustion engine | |
DE102008022937A1 (en) | Three-dimensional valve gear for internal-combustion engine, has three-dimensional cam of valve cam shaft and transfer element which stands in connection with three-dimensional cam by feeler element | |
EP0679798B1 (en) | Arrangement for simultaneously driving two valves in an internal combustion engine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8127 | New person/name/address of the applicant |
Owner name: DR. ING. H.C. F. PORSCHE AKTIENGESELLSCHAFT, 7, DE |
|
8127 | New person/name/address of the applicant |
Owner name: DR. ING. H.C. F. PORSCHE AKTIENGESELLSCHAFT, 7, DE |
|
8110 | Request for examination paragraph 44 | ||
R016 | Response to examination communication | ||
R079 | Amendment of ipc main class |
Free format text: PREVIOUS MAIN CLASS: F01L0001047000 Ipc: F01L0001000000 |
|
R016 | Response to examination communication | ||
R016 | Response to examination communication | ||
R018 | Grant decision by examination section/examining division | ||
R020 | Patent grant now final | ||
R071 | Expiry of right |