EP1298288A1 - Ventilbetätigungselement für ein Gaswechselventil einer Brennkraftmaschine - Google Patents
Ventilbetätigungselement für ein Gaswechselventil einer Brennkraftmaschine Download PDFInfo
- Publication number
- EP1298288A1 EP1298288A1 EP02018741A EP02018741A EP1298288A1 EP 1298288 A1 EP1298288 A1 EP 1298288A1 EP 02018741 A EP02018741 A EP 02018741A EP 02018741 A EP02018741 A EP 02018741A EP 1298288 A1 EP1298288 A1 EP 1298288A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hydraulic
- valve
- line
- gas exchange
- actuating element
- 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
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
- F01L13/0005—Deactivating valves
-
- 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
- F01L1/18—Rocking arms or levers
- F01L1/185—Overhead end-pivot rocking arms
-
- 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
-
- 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
- F01L1/2411—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically by means of a hydraulic adjusting device located between the valve stem and rocker arm
-
- 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
- F01L1/08—Shape of cams
-
- 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
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/34403—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using helically teethed sleeve or gear moving axially between crankshaft and camshaft
- F01L1/34406—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using helically teethed sleeve or gear moving axially between crankshaft and camshaft the helically teethed sleeve being located in the camshaft driving pulley
-
- 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
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
Definitions
- the invention relates to a valve actuating element for a gas exchange valve a Internal combustion engine according to the mentioned in the preamble of claim 1 Art.
- the invention is based on German Patent 35 26 292 C2.
- a hydraulic valve clearance compensation device in a rocker arm for internal combustion engines described.
- the rocker arm has a lubricating oil supply in his axis.
- lubricating oil is conveyed to a lash adjuster, which in the end of the rocker arm is integrated, which rests on a gas exchange valve.
- a hole in the hydraulic valve clearance compensation element the side facing away from the gas exchange valve and an oil return hole on the Rocker arm, the oil return to its axis is possible. Between the axis and The oil return hole is an opening incorporated through which in the lubricating oil located gases can escape from this.
- the object of the invention is for a valve actuator with a hydraulic Loss compensation element to realize a valve shutdown, while simultaneously the leakage losses are minimized.
- the embodiment according to the invention can be used both for rocker arms and for rocker arms.
- there are only small moving masses in the valve train which can be switched on and off at higher speeds gas exchange valves. Due to the omission of mechanical switching systems, such. B. locking pins occur in this invention no wear problems.
- no additional complex oil supply or additional switching valves are needed.
- the hydraulic changeover also allows the use of simple cam contours, as used in valve trains without switching device. Overall, the switching system presented here represents a relatively simple solution, which is also easy to manufacture. For this reason, the manufacturing costs are relatively low.
- An embodiment according to claim 2 enables a simple production of the valve actuating element, which, despite the switchability, the production costs hardly increase.
- the embodiment according to claim 3 reduces the production costs for the inventive Valve actuator.
- a pivoting device allows the development engineers a wide margin in terms of the selection of the actuating element or the power transmission options from the actuator to the axle.
- An embodiment according to claim 7 allows the developer more creative Freedoms regarding the hydraulic fluid supply to the adjustment.
- Fig. 1 shows a section through a valve actuating element 1, which radially to a hydraulic line 4 with a hydraulic medium leading portion 5 and a Axis 3, is arranged, and with a hydraulic clearance compensation element 6, consisting of a plunger 11 and a hydraulic chamber 12 into which a first Spring 13 is arranged.
- the hydraulic medium leading portion 5 is above One-way valve 8, consisting of a cage 14, a ball 15 and a second Spring 16, via a supply line 7 with the hydraulic chamber 12 in conjunction and the supply line 7 is at the same time via a return line 9 at the hydraulic line 4 returned.
- the return line 9 is used when switched off Gas exchange valve at the same time as a supply line for hydraulic medium.
- a cam 10 with the valve actuator 1 is in operative connection.
- the gas exchange valve 2 is activated.
- the hydraulic medium Here engine oil is through the hydraulic line 4 through a hole 22 in the hydraulic line 4, through the one-way valve 8 and the supply line 7 in the hydraulic chamber 12 is conveyed and filled with hydraulic medium.
- the one-way valve 8 prevents a back pressure of the hydraulic medium in the Hydraulic line 4. At the same time, a small amount of hydraulic fluid through the Return line 9 in a movement gap between the hydraulic line 4 and pressed the valve operating member 1 and provides in this Gleitreibungs Scheme for the necessary lubrication.
- a movement ring gap which is not shown in detail is, between the plunger 11 and the valve operating member 1 is also at the same time a leakage gap.
- the hydraulic line 4 is about the axis 3 so twisted that the bore 22 connected to the return line 9 and the supply hole 7 is closed.
- valve actuating element 1 two bores 9 a, a machining bore, are also provided for the return line 9 and a further bore 7a, a machining bore to the supply line 7 recognizable. These, in the assembly by the hydraulic line 4 sealed holes 7a and 9a allow a simple mechanical production of the return line 9 and the supply line 7 and a simple implementation of the one-way valve 8 in the valve actuator 1.
- FIG. 2 is a schematic Representation of a drive of the hydraulic line 4 shows.
- the drive is via an actuating element 17, which with a first transmission element 19, here a Spur gear, communicating.
- This meshes with a second transmission element 20, a second spur gear, which on the hydraulic line 4 radially attached to the outer circumference.
- a first transmission element 19 here a Spur gear
- a second transmission element 20 By the transmission ratio of the first transmission element 19 to the second transmission element 20 may be almost any Translation or reduction be realized.
- the hydraulic line 4 is radially a slot 21, a hydraulic inlet and the bore 22 can be seen.
- the End faces of the hydraulic line 4 are closed and hydraulic medium is promoted by the hydraulic inlet 21 in the hydraulic line 4.
- Through the hole 22, which is either flush with the supply line 7 or depending on the switching state is in communication with the return line 9, the hydraulic medium is either conveyed into the hydraulic chamber 12 or from this back into the hydraulic line 4.
- Actuators are electromagnetic, hydraulic, pneumatic, mechanical or piezoelectric systems possible.
- the hydraulic medium can via the hydraulic inlet 21, z. B. by a Schwinghebelachsenlager be performed in the hydraulic line 4 and from there via the bore 22 to the supply lines 7, and return lines 9 of the get individual valve actuation elements 1.
- Another variant for rotating the hydraulic line 4 is the hydraulic line 4 with an electric motor and a worm gear, the hydraulic line 4 to twist.
- Other variants would be drives via a belt drive, or pogelzellenversteller or axial piston adjuster with helical teeth.
- the valve actuating element 1 according to the invention can, for example, only for one Gas exchange valve 2 of an internal combustion engine or for a plurality of gas exchange valves a cylinder or for all gas exchange valves of the internal combustion engine be used simultaneously.
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
In vorteilhafter Weise kann die erfindungsgemäße Ausgestaltung sowohl für Kipphebel als auch für Schlepphebel eingesetzt werden. Darüber hinaus handelt es sich nur um geringe bewegte Massen im Ventiltrieb, wodurch auch bei höheren Drehzahlen Gaswechselventile zu- und abgeschalten werden können. Durch den Entfall von mechanischen Schaltsystemen, wie z. B. Verriegelungsstiften, treten bei dieser Erfindung keine Verschleißprobleme auf. Neben der nahezu völligen Verschleißfreiheit ist besonders hervorzuheben, dass bei der hier vorgeschlagenen Ausgestaltung keine zusätzliche aufwendige Ölversorgung bzw. zusätzliche Schaltventile benötigt werden. Die hydraulische Umschaltung gestattet darüber hinaus die Verwendung von einfachen Nockenkonturen, wie sie in Ventiltrieben ohne Schaltvorrichtung eingesetzt werden. Insgesamt stellt das hier vorgestellte Schaltsystem eine relativ einfache Lösung dar, die auch fertigungstechnisch einfach herstellbar ist. Aus diesem Grund sind die Herstellkosten relativ niedrig. Bei Verwendung eines derartigen Systems für jedes Ein- bzw. Auslassventil, ist es auf einfache Weise möglich, eine Ventilabschaltung oder auch eine Zylinderabschaltung durchzuführen. Bei Verwendung des brennkraftmaschineneigenen Schmiermittelsystems, wird keine weitere zusätzliche Hochdruckschmiermittelversorgung benötigt. Darüber hinaus sind nur geringe Änderungen an einem herkömmlichen Zylinderkopf zur Adaption des erfindungsgemäß vorgeschlagenen Systems notwendig.
- Fig. 1:
- Schnittzeichnung durch ein Ventilbetätigungselement
- Fig. 2:
- Schematische Darstellung eines Antriebs einer Achse
- 1
- Ventilbetätigungselement
- 2
- Gaswechselventil
- 3
- Achse
- 4
- Hydraulikleitung
- 5
- Hydraulikmediumführender Bereich
- 6
- Hydraulisches Spielausgleichselement
- 7
- Versorgungsbohrung
- 7a
- Bearbeitungsbohrung der Versorgungsleitung
- 8
- Einwegeventil
- 9
- Rückflussleitung
- 9a
- Bearbeitungsbohrung Rückflussleitung
- 10
- Nocken
- 11
- Stößel
- 12
- Hydraulikkammer
- 13
- Erste Feder
- 14
- Käfig
- 15
- Kugel
- 16
- Zweite Feder
- 17
- Stellelement
- 18
- Übersetzung
- 19
- Erstes Übertragungselement
- 20
- Zweites Übertragungselement
- 21
- Hydraulikzulauf
- 22
- Bohrung
Claims (7)
- Ventilbetätigungselement für ein Gaswechselventil einer Brennkraftmaschine, das schwenkbeweglich um eine Achse einer Hydraulikleitung mit einem hydraulikmediumführenden Bereich angeordnet ist, wobei von der Hydraulikleitung beabstandet ein hydraulisches Spielausgleichselement in dem Ventilbetätigungselement angeordnet ist, das auf das Gaswechselventil einwirkt, und das hydraulische Spielausgleichselement durch eine Versorgungsleitung mit einem darin angeordneten Einwegeventil von der Hydraulikleitung mit Hydraulikmedium versorgt wird, wobei die Versorgungsleitung mit einer Rückflussleitung, die zur Hydraulikleitung rückgeführt ist, verbunden ist,
dadurch gekennzeichnet, dass die Hydraulikleitung (4) um ihre Achse (3) schwenkbar und abwechselnd die Versorgungsleitung (7) oder die Rückflussleitung (9) mit dem hydraulikmediumführenden Bereich (5) verbindbar ist. - Ventilbetätigungselement für ein Gaswechselventil Anspruch 1,
dadurch gekennzeichnet, dass das Rückschlagventil (8) an die Hydraulikleitung (4) angeordnet ist. - Ventilbetätigungselement für ein Gaswechselventil nach zumindest einem der zuvor genannten Ansprüche, wobei das hydraulische Spielausgleichselement in einem Gehäuse angeordnet ist,
dadurch gekennzeichnet, dass das Ventilbetätigungselement (1) das Gehäuse ist. - Ventilbetätigungselement für ein Gaswechselventil nach zumindest einem der zuvor genannten Ansprüche,
dadurch gekennzeichnet, dass die Hydraulikleitung (4) von einem Stellelement (17) verschwenkbar ist. - Ventilbetätigungselement für ein Gaswechselventil nach Anspruch 4,
dadurch gekennzeichnet, dass die Hydraulikleitung (4) direkt oder über eine Übersetzung (18) von dem Stellelement (17) verschwenkbar ist. - Ventilbetätigungselement für ein Gaswechselventil nach den Ansprüchen 4 und 5,
dadurch gekennzeichnet, dass das Stellelement (17) elektrisch oder hydraulisch angetrieben ist. - Ventilbetätigungselement für ein Gaswechselventil nach zumindest einem der zuvor genannten Ansprüche,
dadurch gekennzeichnet, dass der Zufluss von Hydraulikmedium in die Hydraulikleitung aus radialer oder axialer Richtung erfolgt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10147293A DE10147293A1 (de) | 2001-09-26 | 2001-09-26 | Ventilbetätigungselement für ein Gaswechselventil einer Brennkraftmaschine |
DE10147293 | 2001-09-26 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1298288A1 true EP1298288A1 (de) | 2003-04-02 |
EP1298288B1 EP1298288B1 (de) | 2004-02-25 |
Family
ID=7700264
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02018741A Expired - Lifetime EP1298288B1 (de) | 2001-09-26 | 2002-08-22 | Ventilbetätigungselement für ein Gaswechselventil einer Brennkraftmaschine |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1298288B1 (de) |
DE (2) | DE10147293A1 (de) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102661223A (zh) * | 2012-05-02 | 2012-09-12 | 哈尔滨工程大学 | 一种靴形型线凸轮 |
CN106968739A (zh) * | 2017-05-11 | 2017-07-21 | 杭州新坐标科技股份有限公司 | 一种轻量化高强度的柴油机滚轮摇臂 |
US10428705B2 (en) | 2017-05-15 | 2019-10-01 | Polaris Industries Inc. | Engine |
US10550754B2 (en) | 2017-05-15 | 2020-02-04 | Polaris Industries Inc. | Engine |
US10576817B2 (en) | 2017-05-15 | 2020-03-03 | Polaris Industries Inc. | Three-wheeled vehicle |
US10639985B2 (en) | 2017-05-15 | 2020-05-05 | Polaris Industries Inc. | Three-wheeled vehicle |
USD904227S1 (en) | 2018-10-26 | 2020-12-08 | Polaris Industries Inc. | Headlight of a three-wheeled vehicle |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005039967A1 (de) * | 2005-08-23 | 2007-03-08 | Dr.Ing.H.C. F. Porsche Ag | Schlepphebel |
DE102006007121A1 (de) * | 2006-02-16 | 2007-08-23 | Daimlerchrysler Ag | Gaswechselventilbetätigungsvorrichtung |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3526292A1 (de) * | 1984-08-29 | 1986-03-13 | Odai Tekko K.K., Nishio, Aichi | Ventilmechanismus fuer eine brennkraftmaschine |
JPS6181509A (ja) * | 1984-09-04 | 1986-04-25 | Honda Motor Co Ltd | 内燃機関の動弁装置 |
EP0442460A1 (de) * | 1990-02-16 | 1991-08-21 | FERRARI S.p.A. | Ventilsteuervorrichtung, insbesondere für Brennkraftmaschinen |
DE4427271A1 (de) * | 1993-08-11 | 1995-02-16 | Volkswagen Ag | Ventiltrieb für ein nockenbetätigtes, schließfederbestücktes Hubventil |
US6058895A (en) * | 1995-12-11 | 2000-05-09 | Fev Motorentechnik Gmbh & Co. | Means for the actuation of valves on a reciprocating engine with a variable valve lift, in particular a reciprocating internal combustion engine |
-
2001
- 2001-09-26 DE DE10147293A patent/DE10147293A1/de not_active Withdrawn
-
2002
- 2002-08-22 EP EP02018741A patent/EP1298288B1/de not_active Expired - Lifetime
- 2002-08-22 DE DE50200256T patent/DE50200256D1/de not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3526292A1 (de) * | 1984-08-29 | 1986-03-13 | Odai Tekko K.K., Nishio, Aichi | Ventilmechanismus fuer eine brennkraftmaschine |
JPS6181509A (ja) * | 1984-09-04 | 1986-04-25 | Honda Motor Co Ltd | 内燃機関の動弁装置 |
EP0442460A1 (de) * | 1990-02-16 | 1991-08-21 | FERRARI S.p.A. | Ventilsteuervorrichtung, insbesondere für Brennkraftmaschinen |
DE4427271A1 (de) * | 1993-08-11 | 1995-02-16 | Volkswagen Ag | Ventiltrieb für ein nockenbetätigtes, schließfederbestücktes Hubventil |
US6058895A (en) * | 1995-12-11 | 2000-05-09 | Fev Motorentechnik Gmbh & Co. | Means for the actuation of valves on a reciprocating engine with a variable valve lift, in particular a reciprocating internal combustion engine |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 010, no. 253 (M - 512) 29 August 1986 (1986-08-29) * |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102661223A (zh) * | 2012-05-02 | 2012-09-12 | 哈尔滨工程大学 | 一种靴形型线凸轮 |
CN102661223B (zh) * | 2012-05-02 | 2013-10-30 | 哈尔滨工程大学 | 一种靴形型线凸轮 |
CN106968739A (zh) * | 2017-05-11 | 2017-07-21 | 杭州新坐标科技股份有限公司 | 一种轻量化高强度的柴油机滚轮摇臂 |
CN106968739B (zh) * | 2017-05-11 | 2022-08-05 | 杭州新坐标科技股份有限公司 | 一种轻量化高强度的柴油机滚轮摇臂 |
US10428705B2 (en) | 2017-05-15 | 2019-10-01 | Polaris Industries Inc. | Engine |
US10550754B2 (en) | 2017-05-15 | 2020-02-04 | Polaris Industries Inc. | Engine |
US10576817B2 (en) | 2017-05-15 | 2020-03-03 | Polaris Industries Inc. | Three-wheeled vehicle |
US10639985B2 (en) | 2017-05-15 | 2020-05-05 | Polaris Industries Inc. | Three-wheeled vehicle |
US11041426B2 (en) | 2017-05-15 | 2021-06-22 | Polaris Industries Inc. | Engine |
US11572813B2 (en) | 2017-05-15 | 2023-02-07 | Polaris Industries Inc. | Engine |
US11614019B2 (en) | 2017-05-15 | 2023-03-28 | Polaris Industries Inc. | Engine |
USD904227S1 (en) | 2018-10-26 | 2020-12-08 | Polaris Industries Inc. | Headlight of a three-wheeled vehicle |
Also Published As
Publication number | Publication date |
---|---|
DE50200256D1 (de) | 2004-04-01 |
DE10147293A1 (de) | 2003-04-10 |
EP1298288B1 (de) | 2004-02-25 |
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