FR2985768A1 - VALVE DEVICE FOR CAMSHAFT ACTUATOR - Google Patents
VALVE DEVICE FOR CAMSHAFT ACTUATOR Download PDFInfo
- Publication number
- FR2985768A1 FR2985768A1 FR1350385A FR1350385A FR2985768A1 FR 2985768 A1 FR2985768 A1 FR 2985768A1 FR 1350385 A FR1350385 A FR 1350385A FR 1350385 A FR1350385 A FR 1350385A FR 2985768 A1 FR2985768 A1 FR 2985768A1
- Authority
- FR
- France
- Prior art keywords
- filter
- sleeve
- combustion engine
- internal combustion
- valve
- 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.)
- Pending
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
- F01L1/34—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
-
- 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
- F01L2001/34423—Details relating to the hydraulic feeding circuit
-
- 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
- F01L2001/34423—Details relating to the hydraulic feeding circuit
- F01L2001/34426—Oil control valves
- F01L2001/34433—Location oil control 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
- F01L1/34—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
- F01L2001/34423—Details relating to the hydraulic feeding circuit
- F01L2001/34436—Features or method for avoiding malfunction due to foreign matters in oil
- F01L2001/3444—Oil filters
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Dispositif de réglage variable des temps de commande de soupapes d'échange de gaz d'un moteur à combustion interne à pistons linéaires comportant une installation hydraulique de réglage de phases (3) reliée côté entrée à un vilebrequin et côté sortie à un arbre à cames (2) du moteur à combustion interne à pistons linéaires et une unité de soupapes (5) dans la région de l'installation de réglage de phases (3) pour commander hydrauliquement celle-ci, - l'unité de soupapes (5) est reliée à une conduite d'alimentation en liquide hydraulique (7) dirigée radialement dans un manchon (6) entourant l'unité de soupapes (5) à la tête d'un vis centrale et la conduite de liquide hydraulique sous pression (7) est reliée à un canal de pression (9), adjacent radialement dans une pièce (8) du moteur à combustion interne en contact avec le manchon (6). La conduite d'alimentation en liquide hydraulique sous pression (7) et/ou le canal de pression (9) comportent un filtre (11) et/ou un clapet antiretour (13).Device for variable adjustment of the control times of gas exchange valves of a linear piston internal combustion engine comprising a hydraulic phase adjustment system (3) connected on the input side to a crankshaft and on the output side to a camshaft (2) of the linear piston internal combustion engine and a valve unit (5) in the region of the phase adjusting device (3) for hydraulically controlling it, - the valve unit (5) is connected to a hydraulic fluid supply line (7) directed radially in a sleeve (6) surrounding the valve unit (5) at the head of a central screw and the hydraulic fluid line under pressure (7) is connected to a pressure channel (9) adjacent radially in a part (8) of the internal combustion engine in contact with the sleeve (6). The hydraulic pressure supply line (7) and / or the pressure channel (9) comprise a filter (11) and / or a check valve (13).
Description
Domaine de l'invention La présente invention se rapporte à un dispositif de ré- glage variable des temps de commande de soupapes d'échange de gaz d'un moteur à combustion interne à pistons linéaires comportant une installation hydraulique de réglage de phases reliée côté entrée à un vi- lebrequin et côté sortie à un arbre à cames du moteur à combustion interne à pistons linéaires et une unité de soupape dans la région de l'installation de réglage de phases pour commander hydrauliquement celle-ci, - l'unité de soupapes est reliée à une conduite d'alimentation en li- quide hydraulique dirigée radialement dans un manchon (6) entourant l'unité de soupapes à la tête d'un vis centrale et la conduite de liquide hydraulique sous pression est reliée à un canal de pression, adjacent radialement dans une pièce du moteur à combustion in- terne en contact avec le manchon. Etat de la technique Un tel dispositif de réglage variable des temps de com- mande des soupapes d'échange de gaz d'un moteur à combustion interne à pistons linéaires est connu selon le document DE 10 2009 016 186 Al. Dans ce dispositif, l'unité de soupapes est lo- gée dans une vis centrale longue vissée dans l'arbre à cames et portant l'installation de réglage de phases. La tête de la vis est reliée de manière étanche à un com- posant lui-même relié solidairement au moteur à combustion interne et comportant un canal de pression de sorte que la conduite d'alimenta- tion en liquide hydraulique sous pression dans la vis, fournit le liquide hydraulique sous pression à l'unité de soupape. Comme le liquide hydraulique sous pression utilisé est l'huile de graissage du moteur à combustion interne à pistons linéaires, la difficulté est que les particules de saleté et d'abrasion qui s'accumu- lent dans l'huile de graissage, arrivent dans l'unité de soupapes et peuvent provoquer le bouchage et autres détériorations de l'unité de soupape. Une autre difficulté est que selon la position et la disposi- tion de la conduite d'alimentation en liquide sous pression et du canal de pression, en cas d'arrêt prolongé du moteur à combustion interne, ces conduites se vident au moins en partie, si bien que l'unité de soupapes ne sera de nouveau fonctionnelle que lorsqu'une pression de liquide suffisante sera rétablie et que les inclusions d'air seront éliminées. But de l'invention La présente invention a ainsi pour but de développer un dispositif permettant de régler de manière variable les temps de commande pour éviter l'encrassage de l'unité de soupapes et le cas échéant que l'alimentation en liquide hydraulique sous pression ne se vide et cela en réalisant le dispositif avec des moyens simples et économiques. Exposé et avantages de l'invention A cet effet, l'invention a pour objet un dispositif de réglage variable des temps de commande de soupapes d'échange de gaz d'un moteur à com- as bustion interne à pistons linéaires du type défini ci-dessus, caractérisé en ce que la conduite d'alimentation en liquide hydraulique sous pression et/ou le canal de pression comportent un filtre et/ou un clapet antiretour. Grâce au montage du filtre dans la conduite d'alimenta- 20 tion en liquide hydraulique sous pression ou dans le canal de pression, on garantit que le liquide sous pression arrivant ne contiendra plus de particules en flottement ni d'éléments qui l'encrassent. Si en outre on intègre un clapet antiretour, cela garantit que l'unité de soupapes sera toujours remplie de liquide hydraulique 25 même après un temps d'arrêt prolongé du moteur à combustion interne à pistons linéaires. Pour qu'indépendamment de la position de rotation du manchon par rapport au composant fixe du moteur à combustion interne, on garantit l'alimentation en liquide hydraulique sous pression, 30 la conduite d'alimentation en liquide sous pression comporte à son ex- trémité tournée vers le canal de pression et/ou le canal de pression lui-même, une rainure annulaire avec un filtre et/ou un clapet antiretour intégré dans ou à la rainure annulaire. On a ainsi une position avantageuse, protégée et fixée dans l'espace pour le filtre et/ou le clapet anti- 35 retour. La conduite d'alimentation en liquide hydraulique sous pression et le canal de pression, rejoignent radialement la rainure annulaire. La conduite d'alimentation en liquide hydraulique sous pression et le cas échéant la rainure annulaire, sont installées dans la tête en forme de manchon d'une vis centrale elle-même logée dans l'arbre à cames. Field of the Invention The present invention relates to a variable control device for the control times of gas exchange valves of a linear piston internal combustion engine comprising a hydraulic installation of phase adjustment connected on the input side. to a crankshaft and a camshaft output side of the linear piston internal combustion engine and a valve unit in the region of the phase adjusting device for hydraulically controlling the same; - the valve unit is connected to a radially directed hydraulic supply line in a sleeve (6) surrounding the valve unit at the head of a central screw and the hydraulic fluid line under pressure is connected to a pressure channel radially adjacent in a part of the internal combustion engine in contact with the sleeve. STATE OF THE ART Such a device for variable adjustment of the control times of the gas exchange valves of an internal combustion engine with linear pistons is known from DE 10 2009 016 186 A1. The valve unit is housed in a long central screw screwed into the camshaft and carrying the phase adjustment system. The head of the screw is sealingly connected to a component which is itself integrally connected to the internal combustion engine and comprises a pressure channel so that the pipe for supplying pressurized hydraulic fluid into the screw, supplies the hydraulic fluid under pressure to the valve unit. Since the hydraulic fluid used is the lubricating oil of the internal combustion engine with linear pistons, the difficulty is that the particles of dirt and abrasion that accumulate in the lubricating oil, arrive in the oil. valve unit and may cause clogging and other damage to the valve unit. Another difficulty is that, depending on the position and the arrangement of the pressurized liquid supply line and the pressure channel, in the event of prolonged stopping of the internal combustion engine, these lines are empty at least in part, so that the valve unit will only be functional again when sufficient liquid pressure is restored and air inclusions are eliminated. OBJECT OF THE INVENTION The object of the present invention is therefore to develop a device making it possible to adjust the control times in a variable manner in order to prevent fouling of the valve unit and, where appropriate, the supply of hydraulic fluid under pressure. does not empty and that by realizing the device with simple and economical means. SUMMARY OF THE INVENTION AND ADVANTAGES OF THE INVENTION To this end, the subject of the invention is a device for variable adjustment of the control times of gas exchange valves of an internal combustion engine with linear pistons of the type defined herein. above, characterized in that the pressurized hydraulic liquid supply line and / or the pressure channel comprise a filter and / or a non-return valve. By mounting the filter in the hydraulic fluid supply line under pressure or in the pressure channel, it is ensured that the incoming pressurized liquid will no longer contain floating particles or fouling particles. If in addition a check valve is incorporated, this ensures that the valve unit will always be filled with hydraulic fluid even after a long downtime of the linear piston internal combustion engine. In order that, irrespective of the rotational position of the sleeve with respect to the fixed component of the internal combustion engine, the supply of pressurized hydraulic fluid is ensured, the pressurized liquid supply line has at its end turned to the pressure channel and / or the pressure channel itself, an annular groove with a filter and / or a non-return valve integrated in or to the annular groove. This provides an advantageous position, protected and fixed in the space for the filter and / or the non-return valve. The pressurized hydraulic liquid supply line and the pressure channel radially join the annular groove. The pressurized hydraulic fluid supply line and, if applicable, the annular groove, are installed in the sleeve-shaped head of a central screw itself housed in the camshaft.
Suivant une autre caractéristique, le filtre et/ou le clapet antiretour sont réalisés avec une forme annulaire adaptée à celle de la rainure annulaire. Le filtre est de préférence installé en aval du clapet antiretour selon le sens de passage du flux. Le filtre et/ou le clapet antiretour peuvent se présenter sous la forme d'un ruban et être formés en un anneau par des moyens de liaison, par exemple des crochets ou une liaison par enclipsage pour être ensuite placés dans la rainure annulaire ou à son bord. Comme la pièce ou composant est fixe par rapport au moteur à combustion interne et que le manchon, c'est-à-dire la tête de vis est solidaire en rotation de l'arbre à cames, des joints annulaires d'étanchéité sont prévus à côté de la rainure annulaire. Ces joints peuvent former un ensemble avec le filtre et/ou le clapet antiretour qui sont alors le cas échéant fixés par des bagues de fixation sur le composant ou sur le manchon. According to another characteristic, the filter and / or the non-return valve are made with an annular shape adapted to that of the annular groove. The filter is preferably installed downstream of the check valve in the flow direction. The filter and / or the check valve may be in the form of a ribbon and be formed into a ring by connecting means, for example hooks or a snap connection, to be subsequently placed in the annular groove or at its end. edge. As the part or component is fixed relative to the internal combustion engine and the sleeve, that is to say the screw head is integral in rotation with the camshaft, annular sealing seals are provided to side of the annular groove. These seals can form an assembly with the filter and / or the check valve which are then optionally fixed by fixing rings on the component or on the sleeve.
Dessins La présente invention sera décrite ci-après de manière plus détaillée à l'aide d'un exemple de réalisation d'un dispositif de réglage variable des temps de commande de soupapes d'échange de gaz d'un moteur à combustion interne à pistons linéaires représenté de manière simplifiée dans les dessins annexés dans lesquels : - la figure 1 est une coupe d'un dispositif de réglage variable des temps de commande des soupapes d'échange de gaz d'un moteur à combustion interne à pistons linéaires, et - la figure 2 est un détail de l'unité de soupapes, du manchon qui l'en- toure et d'une pièce ou composant du moteur à combustion interne à pistons linéaires, l'ensemble étant représenté à échelle agrandie. Description détaillée d'un mode de réalisation de l'invention Selon les figures 1 et 2, la référence 1 se rapport à un arbre à cames dont le taraudage reçoit une vis centrale 2. La vis cen- traie 2 porte une installation de réglage de phases 3 serrée sur la vis. Drawings The present invention will be described below in more detail with the aid of an exemplary embodiment of a device for variable adjustment of the control times of gas exchange valves of a piston internal combustion engine. linearly shown schematically in the accompanying drawings in which: - Figure 1 is a section of a variable control device of the control times of the gas exchange valves of a linear piston internal combustion engine, and - FIG. 2 is a detail of the valve unit, the sleeve which surrounds it, and a part or component of the internal combustion engine with linear pistons, the assembly being shown on an enlarged scale. DETAILED DESCRIPTION OF AN EMBODIMENT OF THE INVENTION According to FIGS. 1 and 2, the reference 1 relates to a camshaft whose threading receives a central screw 2. The central screw 2 carries a control installation 3 phases tight on the screw.
Cette installation 3 est reliée en rotation par une roue à chaîne 4, extérieure, au vilebrequin du moteur à combustion interne à pistons linéaires non représenté de manière détaillée. La vis centrale 2 comporte une unité de soupapes portant la référence 5 qui assure la commande hydraulique de l'installation de réglage de phases 3. La vis centrale 2 a une tête prolongée en forme de manchon 6 et elle comporte une conduite d'alimentation en liquide hydraulique sous pression 7 dirigée radialement. Le manchon 6 de la vis centrale 2 comporte radialement une pièce 8 reliée solidairement au moteur à combustion interne et ayant un canal de pression 9 non détaillé. Ce canal fait partie du circuit d'huile de graissage du moteur à combustion interne à pistons linéaires et fournit du liquide hydraulique sous pression à l'unité de soupapes 5. Le canal de pression 9 est aligné radialement et rejoint la conduite d'alimentation en liquide hydraulique sous pression 7. This installation 3 is connected in rotation by a chain wheel 4, external to the crankshaft of the internal combustion engine with linear pistons not shown in detail. The central screw 2 comprises a valve unit bearing the reference 5 which provides the hydraulic control of the phase adjusting device 3. The central screw 2 has a prolonged sleeve-shaped head 6 and it comprises a supply line hydraulic fluid under pressure 7 directed radially. The sleeve 6 of the central screw 2 has radially a part 8 integrally connected to the internal combustion engine and having a non-detailed pressure channel 9. This channel is part of the lubricating oil circuit of the internal combustion engine with linear pistons and supplies pressurized hydraulic fluid to the valve unit 5. The pressure channel 9 is radially aligned and joins the supply line. hydraulic fluid under pressure 7.
Il est indiqué expressément qu'à la place de la tête de la vis centrale 2 avec le manchon 6, on peut également avoir un écrou en forme de manchon qui est alors en liaison avec un embout fileté de l'arbre à cames 1 ou d'une vis sans tête et porte l'installation de réglage de phases 3 en étant fixé. L'unité de soupapes 5 est alors de préférence installée dans l'embout fileté ou la vis sans tête ou l'arbre à cames 1. Une rainure annulaire 10 tournée vers le canal de pression 9, est reliée à la conduite d'alimentation en liquide hydraulique sous pression 7 de sorte que cette conduite d'alimentation 7 est reliée en permanence au canal de pression 9. La rainure annulaire 10 est équipée d'un filtre 11 de forme annulaire et dont les extrémités sont fermées de manière annulaire par une liaison appropriée. A côté du filtre 11, le manchon 6 comporte des rainures usinées recevant des joints d'étanchéité 12 pour rendre étanche le passage du canal de pression 9 dans la conduite d'alimentation en liquide hydraulique sous pression 7 ou la rainure annulaire 10. En outre, la périphérie extérieure de la rainure annulaire 10 comporte un clapet antiretour 13 en forme de tôle annulaire et également en forme d'anneau. Cette tôle annulaire peut être constituée par un ruban de tôle mis en forme d'anneau avec des éléments de liaison. Mais suivant l'élasticité, on peut également glisser cet élément sur la périphérie extérieure du manchon 6 et l'ajuster au bord de la rainure annulaire 10. Le filtre 11, les joints d'étanchéité annulaires 12 et le cla- pet antiretour 13, peuvent être regroupés en une unité constructive et être montés globalement avec le cas échéant des anneaux de fixation du manchon 6 ou du composant 8 qui fixent le composant.10 NOMENCLATURE 1 arbre à cames 2 vis centrale 3 installation de réglage de phases 4 roue à chaîne 5 unité de soupapes 6 manchon 7 conduite d'alimentation en liquide hydraulique sous pression 8 composant 9 canal de pression 10 rainure annulaire 11 filtre 12 joint annulaire 13 clapet antiretour It is expressly stated that instead of the head of the central screw 2 with the sleeve 6, it is also possible to have a nut in the form of a sleeve which is then connected to a threaded end of the camshaft 1 or a grub screw and carries the phase adjusting device 3 while being fixed. The valve unit 5 is then preferably installed in the threaded end or the grub screw or the camshaft 1. An annular groove 10 facing the pressure channel 9, is connected to the feed pipe. hydraulic fluid under pressure 7 so that this supply pipe 7 is permanently connected to the pressure channel 9. The annular groove 10 is equipped with a ring-shaped filter 11 whose ends are annularly closed by a connection appropriate. Next to the filter 11, the sleeve 6 comprises machined grooves receiving seals 12 to seal the passage of the pressure channel 9 in the pressurized hydraulic liquid supply line 7 or the annular groove 10. , the outer periphery of the annular groove 10 comprises a non-return valve 13 in the form of annular sheet and also in the form of a ring. This annular sheet may be constituted by a ring-shaped sheet metal strip with connecting elements. However, depending on the elasticity, this element can also slide on the outer periphery of the sleeve 6 and adjust it to the edge of the annular groove 10. The filter 11, the annular seals 12 and the non-return valve 13, can be grouped in a constructive unit and be mounted globally with, if necessary, rings for fixing sleeve 6 or component 8 which fix the component. 10 NOMENCLATURE 1 camshaft 2 center screw 3 phase adjustment system 4 chain wheel 5 valve unit 6 sleeve 7 pressurized hydraulic fluid supply line 8 component 9 pressure channel 10 annular groove 11 filter 12 annular seal 13 non-return valve
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012200685.0A DE102012200685B4 (en) | 2012-01-18 | 2012-01-18 | Valve arrangement for camshaft adjuster |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2985768A1 true FR2985768A1 (en) | 2013-07-19 |
Family
ID=48693273
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1350385A Pending FR2985768A1 (en) | 2012-01-18 | 2013-01-17 | VALVE DEVICE FOR CAMSHAFT ACTUATOR |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102012200685B4 (en) |
FR (1) | FR2985768A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9920661B2 (en) | 2013-05-16 | 2018-03-20 | Schaeffler Technologies AG & Co. KG | Camshaft phaser with a rotor nose oil feed adapter |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6382148B1 (en) * | 1999-06-10 | 2002-05-07 | Unisia Jecs Corporation | Oil pressure control apparatus for an internal combustion engine |
DE102004049123A1 (en) * | 2004-10-07 | 2006-04-13 | Ina-Schaeffler Kg | Device for changing the timing of gas exchange valves of an internal combustion engine |
DE112009004393B4 (en) * | 2008-12-10 | 2022-03-10 | Schaeffler Technologies AG & Co. KG | Control valve for a device for variably adjusting the control times of gas exchange valves of an internal combustion engine |
DE102009016186A1 (en) * | 2009-04-03 | 2010-10-14 | Schaeffler Technologies Gmbh & Co. Kg | Apparatus for variably adjusting timing of inlet and outlet gas exchange valves of internal combustion engine, has opening communicating with pressurizing medium line that is formed in cylinder head fixed component and opens into receptacle |
DE102009052841A1 (en) * | 2009-11-13 | 2011-05-19 | Hydraulik-Ring Gmbh | camshafts use |
DE202010006605U1 (en) * | 2010-04-03 | 2010-11-18 | Hydraulik-Ring Gmbh | central valve |
-
2012
- 2012-01-18 DE DE102012200685.0A patent/DE102012200685B4/en not_active Expired - Fee Related
-
2013
- 2013-01-17 FR FR1350385A patent/FR2985768A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DE102012200685A1 (en) | 2013-07-18 |
DE102012200685B4 (en) | 2020-10-22 |
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