FR2910529A3 - Hydraulic system i.e. hydraulic stop, for internal combustion engine of motor vehicle, has oil filter placed around external surface of cylindrical wall constituting body of system, and another filter placed on internal surface of wall - Google Patents

Hydraulic system i.e. hydraulic stop, for internal combustion engine of motor vehicle, has oil filter placed around external surface of cylindrical wall constituting body of system, and another filter placed on internal surface of wall Download PDF

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Publication number
FR2910529A3
FR2910529A3 FR0655891A FR0655891A FR2910529A3 FR 2910529 A3 FR2910529 A3 FR 2910529A3 FR 0655891 A FR0655891 A FR 0655891A FR 0655891 A FR0655891 A FR 0655891A FR 2910529 A3 FR2910529 A3 FR 2910529A3
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FR
France
Prior art keywords
hydraulic
wall
filter placed
filter
stop
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Withdrawn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
FR0655891A
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French (fr)
Inventor
Alexandre Hebert
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.)
Renault SAS
Original Assignee
Renault SAS
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Filing date
Publication date
Application filed by Renault SAS filed Critical Renault SAS
Priority to FR0655891A priority Critical patent/FR2910529A3/en
Publication of FR2910529A3 publication Critical patent/FR2910529A3/en
Withdrawn legal-status Critical Current

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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
    • F01L1/20—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
    • F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups

Abstract

The system has an oil supply orifice (1) located laterally on a cylindrical wall of the system. A cylindrical shaped oil filter (10) is placed, at the level of the orifice, around an external surface (2A) of the wall constituting a body of the system. Another filter is placed, at the level of the orifice, on an internal surface of the wall. The external diameter of the latter filter is less than the diameter of the internal surface. The internal diameter of the former filter is equal to external diameter of the external surface.

Description

1 SYSTEME HYDRAULIQUE POUR LE RATTRAPAGE DE JEU DES SOUPAPES DES MOTEURS A1 HYDRAULIC SYSTEM FOR THE RETROFITTING OF VALVE SETTINGS OF MOTORS A

COMBUSTION INTERNE DESCRIPTION Domaine de l'invention L'invention concerne les moteurs à combustion interne pour véhicules automobiles, et en particulier les systèmes hydrauliques qui ont pour fonction de compenser ou rattraper, en continu, l'évolution du jeu au niveau des soupapes. Art antérieur et problème posé Les systèmes hydrauliques peuvent consister par exemple en des butées hydrauliques, des éléments hydrauliques pour culbuteur, ou encore des poussoirs hydrauliques. Tous ces composants ont pour fonction de rattraper le jeu aux soupapes et sont bien connus de l'homme du métier. Au niveau de la butée hydraulique, qui permet de compenser en continu l'évolution du jeu des soupapes d'un moteur à combustion interne, l'huile circule dans la butée hydraulique au travers de jeux, de quelques micromètres, délimités par les pièces constituant cette butée hydraulique. En conséquence, l'huile doit donc avoir une propreté d'un haut niveau. Il est connu d'utiliser un filtre pour nettoyer en continu l'huile utilisée dans différentes parties du moteur à combustion interne. Or, même avec 2910529 2 une filtration correcte de l'huile au niveau du carter du moteur, la possibilité existe toujours de trouver des particules au niveau de la butée hydraulique destinée à compenser le jeu au niveau des soupapes, 5 empêchant ainsi son fonctionnement correct. Le but de l'invention est donc de remédier à ces inconvénients. Or, par la demande de brevet français FR 2 519 074, on connaît un dispositif de réglage 10 hydraulique pour soupape utilisant un filtre à huile. Par contre, ce dernier est implanté dans le piston supérieur du dispositif de réglage, près du trou d'évacuation. En conséquence, ce filtre effectue son office, non pas en entrée de la butée, mais à la sortie 15 de cette dernière. Résumé de l'invention Un premier objet de l'invention est donc un 20 système hydraulique comprenant au moins un orifice d'alimentation d'huile, situé latéralement sur une paroi de la butée. Selon l'invention, on propose de placer un filtre contre l'une des faces de la paroi au niveau de 25 l'orifice d'alimentation en huile de la butée cylindrique. Dans une première réalisation, le filtre est placé en amont de l'orifice d'alimentation, c'est-à-dire sur la face externe de la paroi de la 30 butée.  FIELD OF THE INVENTION The invention relates to internal combustion engines for motor vehicles, and in particular to hydraulic systems whose function is to compensate or catch up, continuously, the evolution of the clearance at the valves. PRIOR ART AND PROBLEM POSED Hydraulic systems can consist, for example, of hydraulic stops, hydraulic elements for rockers, or even hydraulic pushers. All these components have the function of catching the valve clearance and are well known to those skilled in the art. At the level of the hydraulic stop, which makes it possible to continuously compensate for the evolution of the valve clearance of an internal combustion engine, the oil circulates in the hydraulic abutment through clearances, a few micrometers, delimited by the parts constituting this hydraulic stop. As a result, the oil must have a high level of cleanliness. It is known to use a filter to continuously clean the oil used in different parts of the internal combustion engine. However, even with proper filtering of the oil at the crankcase of the engine, the possibility still exists of finding particles at the hydraulic abutment intended to compensate the clearance at the valves, thus preventing its correct operation. . The object of the invention is therefore to overcome these disadvantages. However, French patent application FR 2 519 074 discloses a hydraulic valve adjusting device using an oil filter. However, the latter is implanted in the upper piston of the adjustment device, near the evacuation hole. Consequently, this filter performs its function, not at the entry of the stop, but at the exit 15 of the latter. SUMMARY OF THE INVENTION A first object of the invention is thus a hydraulic system comprising at least one oil supply port, located laterally on a wall of the abutment. According to the invention, it is proposed to place a filter against one of the faces of the wall at the oil supply orifice of the cylindrical stop. In a first embodiment, the filter is placed upstream of the supply orifice, that is to say on the outer face of the wall of the abutment.

2910529 3 Dans une deuxième réalisation, il est prévu de placer le filtre en aval de l'orifice d'alimentation, c'est-à-dire sur la face interne de la paroi de la butée.In a second embodiment, it is intended to place the filter downstream of the supply port, that is to say on the inner face of the wall of the abutment.

5 Dans sa réalisation préférentielle, la paroi du système est cylindrique, et le filtre est de forme cylindrique. Un deuxième objet de l'invention est un moteur à combustion interne comportant un système 10 hydraulique tel que résumé précédemment. Liste des figures L'invention et ses différentes 15 caractéristiques techniques seront mieux comprises à la lecture de la description suivante, illustrée de quatre figures représentant respectivement : - figure 1, de façon démontée, la butée selon l'invention dans sa première réalisation ; 20 - figure 2, de façon montée, la butée selon l'invention dans sa première réalisation ; - figure 3, de façon démontée, la butée selon l'invention selon une deuxième réalisation de l'invention ; et 25 - figure 4, de façon montée, la butée selon l'invention dans sa deuxième réalisation.In its preferred embodiment, the wall of the system is cylindrical, and the filter is cylindrical in shape. A second object of the invention is an internal combustion engine comprising a hydraulic system as summarized above. List of Figures The invention and its various technical features will be better understood on reading the following description, illustrated by four figures respectively showing: FIG. 1, disassembled, the stop according to the invention in its first embodiment; 20 - Figure 2, mounted, the abutment according to the invention in its first embodiment; - Figure 3, disassembled, the abutment according to the invention according to a second embodiment of the invention; and 25 - Figure 4, mounted, the abutment according to the invention in its second embodiment.

2910529 4 Description détaillée de deux réalisations de l'invention appliquée aux butées hydrauliques par exemple 5 En référence à la figure 1, la première réalisation de l'invention propose donc de monter un filtre à huile 10 de forme cylindrique, de faible épaisseur, autour de la butée hydraulique, et en particulier autour de la face externe 2A de la paroi 10 cylindrique constituant les corps de la butée hydraulique, au niveau de l'orifice d'alimentation 1 en huile de la butée. On note que celui-ci est latéral alors qu'un trou d'évacuation 3 est placé au sommet et au centre de la butée hydraulique. En effet, l'huile 15 rentre latéralement par l'orifice d'alimentation 1, gagne le centre de la butée en passant entre certaines pièces pour déboucher par l'orifice d'évacuation 3. La figure 2 montre cet ensemble monté, c'est-à-dire le filtre 10 étant placé autour de la face 20 externe, qui est maintenant cachée, de la paroi externe de la butée, au niveau de l'orifice d'alimentation. On constate donc que le diamètre interne du filtre 10 est égal au diamètre externe de la face externe, référencé 2A sur la figure 1 de la paroi cylindrique de la butée, 25 de sorte à obtenir une étanchéité pour que l'huile soit obligée de passer par le filtre 10. En référence à la figure 3, la deuxième solution choisie est d'utiliser un filtre 20 de diamètre externe légèrement inférieur au diamètre de la 30 face interne de la paroi cylindrique 2 constituant le 2910529 5 corps de la butée hydraulique, au niveau de l'orifice d'alimentation 1. Dans ce cas, le filtre 20 est donc placé à l'intérieur de la paroi cylindrique 2 au niveau de 5 l'orifice d'alimentation 1. La partie supérieure 4 de la butée, portant l'orifice d'évacuation 3, étant démontée et remontée pour chapeauter le filtre 20. Dans ce cas, la partie supérieure possède une partie inférieure 4A d'un diamètre plus restreint, légèrement 10 inférieur au diamètre intérieur du filtre à huile 20, de manière à centrer ce dernier. La figure 4 montre cette deuxième réalisation assemblée. Le filtre 20 étant coincé entre la paroi cylindrique 2 de la butée et la partie inférieure 4A de 15 la partie supérieure 4 de la butée, toujours au niveau de l'orifice d'évacuation. Ainsi l'huile est nettoyée constamment avant son utilisation dans la partie fonctionnelle de la butée, destinée à rattraper en permanence le jeu au 20 niveau des soupapes du moteur. Ainsi, les plus grosses particules pouvant continuer à évoluer dans l'huile avec les filtres classiques ont toutes les chances d'être arrêtées avant leur arrivée dans les parties fonctionnelles de la butée.2910529 4 Detailed description of two embodiments of the invention applied to hydraulic stops, for example With reference to FIG. 1, the first embodiment of the invention proposes to mount a thin cylindrical oil filter 10, around the hydraulic stop, and in particular around the outer face 2A of the cylindrical wall constituting the body of the hydraulic stop, at the oil supply port 1 of the abutment. It is noted that it is lateral whereas an evacuation hole 3 is placed at the top and in the center of the hydraulic abutment. Indeed, the oil 15 enters laterally through the supply port 1, gaining the center of the stop passing between certain parts to open through the evacuation port 3. Figure 2 shows the assembled assembly, c ' that is, the filter 10 being placed around the outer, now hidden, face of the outer wall of the abutment at the feed port. It can thus be seen that the internal diameter of the filter 10 is equal to the external diameter of the external face, referenced 2A in FIG. 1 of the cylindrical wall of the abutment, so as to obtain a seal so that the oil is forced to pass. by the filter 10. With reference to FIG. 3, the second solution chosen is to use a filter 20 of external diameter slightly smaller than the diameter of the internal face of the cylindrical wall 2 constituting the body of the hydraulic abutment, at the level of the supply port 1. In this case, the filter 20 is thus placed inside the cylindrical wall 2 at the feed opening 1. The upper part 4 of the stop, carrying the discharge port 3, being disassembled and reassembled to cap the filter 20. In this case, the upper portion has a lower portion 4A of a smaller diameter, slightly less than the inner diameter of the oil filter. 20, so as to center the latter. Figure 4 shows this second assembly. The filter 20 is wedged between the cylindrical wall 2 of the abutment and the lower part 4A of the upper part 4 of the abutment, always at the level of the discharge orifice. Thus the oil is constantly cleaned before use in the functional part of the stop, intended to make up for the play at the level of the engine valves. Thus, the largest particles that can continue to evolve in the oil with the conventional filters are likely to be stopped before their arrival in the functional parts of the stop.

Claims (5)

REVENDICATIONS 1. Système hydraulique comportant au moins un orifice d'alimentation (1) en huile situé latéralement sur une paroi (2) d'une butée, caractérisée en ce qu'elle comprend un filtre (10, 20), placé contre l'une des faces de la paroi (2), au niveau de l'orifice d'alimentation (1).  1. Hydraulic system comprising at least one oil supply port (1) located laterally on a wall (2) of a stop, characterized in that it comprises a filter (10, 20), placed against one faces of the wall (2) at the supply port (1). 2. Système hydraulique selon la revendication 1, caractérisée en ce que le filtre (10) est placé en amont de l'orifice d'alimentation (1), c'est-à-dire sur la face externe (2A) de la paroi (2) de la butée.  2. Hydraulic system according to claim 1, characterized in that the filter (10) is placed upstream of the supply port (1), that is to say on the outer face (2A) of the wall (2) the stop. 3. Système hydraulique selon la revendication 1, caractérisée en ce que le filtre (20) est placé en aval de l'orifice d'alimentation (1), c'est-à-dire contre la face interne de la paroi (2) de la butée.  3. Hydraulic system according to claim 1, characterized in that the filter (20) is placed downstream of the supply port (1), that is to say against the inner face of the wall (2) of the stop. 4. Système hydraulique selon l'une quelconque des revendications précédentes, dans lequel la paroi (2) est cylindrique, caractérisé en ce que le filtre (10,20) est de forme cylindrique.  4. Hydraulic system according to any one of the preceding claims, wherein the wall (2) is cylindrical, characterized in that the filter (10,20) is cylindrical. 5. Moteur à combustion interne comportant un système hydraulique selon l'une quelconque des revendications précédentes.  5. Internal combustion engine comprising a hydraulic system according to any one of the preceding claims.
FR0655891A 2006-12-22 2006-12-22 Hydraulic system i.e. hydraulic stop, for internal combustion engine of motor vehicle, has oil filter placed around external surface of cylindrical wall constituting body of system, and another filter placed on internal surface of wall Withdrawn FR2910529A3 (en)

Priority Applications (1)

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FR0655891A FR2910529A3 (en) 2006-12-22 2006-12-22 Hydraulic system i.e. hydraulic stop, for internal combustion engine of motor vehicle, has oil filter placed around external surface of cylindrical wall constituting body of system, and another filter placed on internal surface of wall

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FR0655891A FR2910529A3 (en) 2006-12-22 2006-12-22 Hydraulic system i.e. hydraulic stop, for internal combustion engine of motor vehicle, has oil filter placed around external surface of cylindrical wall constituting body of system, and another filter placed on internal surface of wall

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202017006770U1 (en) 2017-05-23 2018-05-02 Schaeffler Technologies AG & Co. KG Hydraulic support element for a drag lever in a valve train of an internal combustion engine
DE102017112468B3 (en) 2017-06-07 2018-07-19 Schaeffler Technologies AG & Co. KG Hydraulic support element
DE102017112574B3 (en) 2017-06-08 2018-07-26 Schaeffler Technologies AG & Co. KG Hydraulic support element with a ring filter
DE102017110803A1 (en) 2017-05-18 2018-11-22 Schaeffler Technologies AG & Co. KG Hydraulic valve clearance compensation element for an internal combustion engine
DE102017114061A1 (en) 2017-06-26 2018-12-27 Schaeffler Technologies AG & Co. KG Valve train of an internal combustion engine
DE102017115097A1 (en) 2017-07-06 2019-01-10 Schaeffler Technologies AG & Co. KG Hydraulic support element
DE102017116640A1 (en) 2017-07-24 2019-01-24 Schaeffler Technologies AG & Co. KG Hydraulic support element for a drag lever in a valve train of an internal combustion engine
DE102017126288A1 (en) 2017-11-09 2019-05-09 Schaeffler Technologies AG & Co. KG Pipe for pressure medium supply of valve train elements

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2247459A1 (en) * 1972-09-27 1974-04-04 Daimler Benz Ag HYDRAULIC VALVE CLEARANCE COMPENSATING ELEMENT FOR COMBUSTION MACHINERY
FR2519074A1 (en) * 1981-12-28 1983-07-01 Stanadyne Inc HYDRAULIC REGULATOR FOR INTERNAL COMBUSTION ENGINE CULBUTERY
JPS5970823A (en) * 1982-10-15 1984-04-21 Kasuya Seikou Kk Lubrication filter in externally oiling type tappet to valve gear system for internal-combustion engine
DE10020117A1 (en) * 2000-04-22 2001-10-25 Schaeffler Waelzlager Ohg Guide bush for housing bore in internal combustion engine for cam follower has porous surface construction as sieving filter in passage for hydraulic fluid
EP1382807A2 (en) * 2002-07-18 2004-01-21 Bayerische Motoren Werke Aktiengesellschaft Spool valve with oil filter for variable camshaft drive

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2247459A1 (en) * 1972-09-27 1974-04-04 Daimler Benz Ag HYDRAULIC VALVE CLEARANCE COMPENSATING ELEMENT FOR COMBUSTION MACHINERY
FR2519074A1 (en) * 1981-12-28 1983-07-01 Stanadyne Inc HYDRAULIC REGULATOR FOR INTERNAL COMBUSTION ENGINE CULBUTERY
JPS5970823A (en) * 1982-10-15 1984-04-21 Kasuya Seikou Kk Lubrication filter in externally oiling type tappet to valve gear system for internal-combustion engine
DE10020117A1 (en) * 2000-04-22 2001-10-25 Schaeffler Waelzlager Ohg Guide bush for housing bore in internal combustion engine for cam follower has porous surface construction as sieving filter in passage for hydraulic fluid
EP1382807A2 (en) * 2002-07-18 2004-01-21 Bayerische Motoren Werke Aktiengesellschaft Spool valve with oil filter for variable camshaft drive

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017110803A1 (en) 2017-05-18 2018-11-22 Schaeffler Technologies AG & Co. KG Hydraulic valve clearance compensation element for an internal combustion engine
DE202017006770U1 (en) 2017-05-23 2018-05-02 Schaeffler Technologies AG & Co. KG Hydraulic support element for a drag lever in a valve train of an internal combustion engine
DE102017111225A1 (en) 2017-05-23 2018-05-30 Schaeffler Technologies AG & Co. KG Hydraulic support element for a drag lever in a valve train of an internal combustion engine
DE102017112468B3 (en) 2017-06-07 2018-07-19 Schaeffler Technologies AG & Co. KG Hydraulic support element
WO2018224074A1 (en) 2017-06-07 2018-12-13 Schaeffler Technologies AG & Co. KG Hydraulic support element
US11459915B2 (en) 2017-06-07 2022-10-04 Schaeffler Technologies AG & Co. KG Hydraulic support element
DE102017112574B3 (en) 2017-06-08 2018-07-26 Schaeffler Technologies AG & Co. KG Hydraulic support element with a ring filter
US10422255B2 (en) 2017-06-08 2019-09-24 Schaeffler Technologies AG & Co. KG Hydraulic support element with a ring filter
DE102017114061A1 (en) 2017-06-26 2018-12-27 Schaeffler Technologies AG & Co. KG Valve train of an internal combustion engine
DE102017115097A1 (en) 2017-07-06 2019-01-10 Schaeffler Technologies AG & Co. KG Hydraulic support element
DE102017116640A1 (en) 2017-07-24 2019-01-24 Schaeffler Technologies AG & Co. KG Hydraulic support element for a drag lever in a valve train of an internal combustion engine
DE102017126288A1 (en) 2017-11-09 2019-05-09 Schaeffler Technologies AG & Co. KG Pipe for pressure medium supply of valve train elements

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