EP0591533A1 - Dispositif de reglage de poussoir hydraulique a effet direct - Google Patents

Dispositif de reglage de poussoir hydraulique a effet direct Download PDF

Info

Publication number
EP0591533A1
EP0591533A1 EP92909708A EP92909708A EP0591533A1 EP 0591533 A1 EP0591533 A1 EP 0591533A1 EP 92909708 A EP92909708 A EP 92909708A EP 92909708 A EP92909708 A EP 92909708A EP 0591533 A1 EP0591533 A1 EP 0591533A1
Authority
EP
European Patent Office
Prior art keywords
reservoir
oil
sub
lash adjuster
chamber
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Withdrawn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
EP92909708A
Other languages
German (de)
English (en)
Other versions
EP0591533A4 (fr
Inventor
Akihiko Hosaka
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.)
Nittan Corp
Original Assignee
Nittan Valve Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nittan Valve Co Ltd filed Critical Nittan Valve Co Ltd
Publication of EP0591533A1 publication Critical patent/EP0591533A1/fr
Publication of EP0591533A4 publication Critical patent/EP0591533A4/fr
Withdrawn legal-status Critical Current

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
    • 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

Definitions

  • This invention relates to an improvement of a direct acting type hydraulic lash adjuster having a hydraulic unit of the lash adjuster contained in a bucket.
  • valve operating mechanism in an internal combustion engine is easily affected by abrasion and thermal expansion, and the valve clearance is changed during operation to exert bad influence on the output and noise.
  • hydraulic lash adjusters for suitably correcting such a clearance have been used.
  • a hydraulic lash adjuster as shown in Fig. 33.
  • Such a hydraulic lash adjuster is composed of a bucket X and a hydraulic unit Y for the hydraulic lash adjuster accommodated in the interior of the bucket X and interposed between a cam 80 and the shaft end portion of a valve 81.
  • the above-mentioned hydraulic unit Y comprises a bottomed tubular plunger 50 with an oil hole 51 at the bottom, a similarly bottomed tubular body 70 slidably fitted on the outer peripheral surface of the plunger 50 and forming a high pressure chamber 60 between it and the bottom of the plunger, an elastic body 61 interposed within the high pressure chamber 60 and biasing the body 70 toward the closed surface thereof, a check ball 62 provided within the high pressure chamber 60 and taking charge of the operations of closing and opening the above-mentioned oil hole 51, a check ball spring 63 for holding the check ball 62 and a check ball cage 64.
  • This hydraulic unit Y is accommodated within the bucket X, and a main reservoir 52 for holding oil is formed between the back surface of the face disk 90 of the bucket X and the hollow portion of the plunger 50, and further, a sleeve 30 is installed so as to extend from the inside surface of the bucket X and enclose the hydraulic unit Y, so that around the main reservoir 52, partitioned by the peripheral wall surface of the plunger 50, is formed a sub-reservoir 40 which communicates therewith through an overflow recess 53 and to which working oil is supplied through an oil feed path 100 of a cylinder head and an oil feed port 20 of the bucket X.
  • Such a hydraulic lash adjuster utilizes both the elastic effect due to oil leaking down to the exterior and the compression of the volume occurring in the working oil per se when pressure is applied to the working oil filled within the high pressure chamber 60, and the rigid effect of the working oil produced when pressure is further applied so that the compression of the volume does not advance any more, and further, when pressure is released, a repulsion force of the elastic body 61 provided within the high pressure chamber 60 which attempts to expand is produced, so that correcting operations are performed so as to make the clearance in the valve operating mechanism produced due to thermal expansion or the like zero.
  • the hydraulic lash adjuster in the bottomed condition is extended to a predetermined position while performing the suction of the working oil from the reservoirs 40, 52 into the high pressure chamber 60 to make up for the lack of the working oil.
  • the above-mentioned entered air flows from the main reservoir 52 into the high pressure chamber 60, thereby extremely lowering the rigidity to be produced of the working oil within the high pressure chamber 60 (coming to be in a sponge-like state) when the plunger 50 is pressed, and as a result, an appropriate correction of the valve clearance can not be made and noise of the valve when seated becomes larger.
  • bottomed condition means that in the case where the internal combustion engine is stopped with the face disk 90 of the bucket X being pushed up by the cam nose 80a, the hydraulic unit Y is compressed to the most compressed condition, as shown in Fig. 34.
  • the sliding strokes of the plunger 50 and body 70 come to be at the maximum and the amount of suction of the oil into the high pressure chamber 60 comes to be at the maximum. Accordingly, at this time, the amount of suction of the above-mentioned air into the high pressure chamber 60 also comes to be at the maximum, thereby causing a remarkable reduction of the rigidity of the working oil therein.
  • the present invention is devised in view of the above-mentioned problems in the prior art, and a first object of the present invention is to provide a direct acting type hydraulic lash adjuster, in which air is not absorbed into the high pressure chamber when restarting an engine by preventing air from entering into the reservoir.
  • a second object of the present invention is to provide a direct acting type hydraulic lash adjuster which is easy to mount therein a ring body by which an oil path is formed.
  • the direct acting type hydraulic lash adjuster according to Claim 1, wherein, as shown in Fig. 1(a), a hydraulic unit Y of the lash adjuster is accommodated within a bucket X provided with an oil feed port 2 and a sleeve 3 is installed so as to extend from the inside of the bucket X and enclose the hydraulic unit Y, so that a sub-reservoir 4 for feeding working oil injected from said oil feed port 2 to a main reservoir 52 at the hydraulic unit Y side is formed around said hydraulic unit Y, is characterized in that, as shown in Fig.(b) taken along Line A-A of Fig. 1, an oil path 1 is provided which communicates with the oil feed port 2 and turns around in the sub-reservoir 4 until it opens into the sub-reservoir 4.
  • Adopting such a construction produces the operation as described below. That is, as described in the embodiment stated later, even if the working oil leaks during stoppage of the engine, leakage of the working oil is stopped when the oil level drops to the same level as the lowermost level Z of the clearance between the sleeve 3 and the body 70. Accordingly, as the construction according to the present invention is shown diagrammatically in Fig.2, if a drop in the oil level to the same level as the above-mentioned lowermost level Z occurs only within the oil path 1 provided in the sub-reservoir 4, the oil path does not drop to the position where the oil path 1 cut off, and as a result, entrance of air into the reservoirs 52, 4 is prevented.
  • the construction of the opening 1a thereof being positioned in the vicinity of the oil feed port 2 is preferable.
  • the number of rounds the oil path 1 per se around the hydraulic unit Y from the oil feed port 2 may be is from one round to two rounds or more.
  • the direct acting type hydraulic lash adjuster according to Claim 4, wherein, as shown in Fig. 13, a hydraulic unit Y of the lash adjuster is accommodated within a bucket X provided with an oil feed port 20 and a sleeve 30 is installed so as to extend from the inside of the bucket X and enclose the hydraulic unit Y, so that a sub-reservoir 40 for feeding working oil injected from said oil feed port 20 to a main reservoir 52 at the hydraulic unit Y side is formed around said hydraulic unit Y, is characterized in that, as shown in Fig. 14, taken along Line A-A of Fig.
  • a ring body 11 is accommodated within the sub-reservoir 40 and integrally provided therewith, said ring body comprising a partition wall defining a first chamber 12 which turns around like a circular ring along the formed outer wall of the reservoir in the bucket X and communicates with the oil feed port 20 and a second chamber 16 which turns around like a circular ring inside the first chamber 12 and communicates with the main reservoir 52, and a channel for forming an oil path 10, which turns around in the sub-reservoir 40 and opens into the first and second chambers 12 and 16.
  • the circular ring-like first chamber 12 in the sub-reservoir formed by the ring body 11 ensures the communicating condition between the oil feed port 20 and the first chamber 12 in the sub-reservoir, whatever position the ring body 11, which defines the first and second chambers 12, 16 within the sub-reservoir 40 and forms the oil path 10 communicating with both chambers 12 and 16, occupies in the circumference relative to the bucket.
  • the construction of the opening 18 into the second chamber 16 in the sub-reservoir being positioned in the vicinity of the opening 14 into the first chamber 12 in the sub-reservoir is preferable.
  • the number of rounds the oil path per se around the hydraulic unit Y from the first chamber 12 in the sub-reservoir may be is one round to two rounds or more.
  • Fig. 3 shows a valve operating mechanism attached to a horizontal opposed type engine.
  • This is a direct acting type valve operating mechanism in which a hydraulic lash adjuster composed of a bucket X and a hydraulic unit Y is interposed between a cam 80 and a valve 81.
  • the above-mentioned hydraulic unit Y comprises a bottomed cylindrical plunger 50 having an oil hole 51 at the bottom thereof; a body 70 which is slidably fitted on the outer peripheral surface of the plunger 50 and which defines a high pressure chamber 60 between it and the above-mentioned bottom; and a main reservoir 52 formed within the plunger 50 and communicating with the high pressure chamber 60 through the above-mentioned oil hole 51.
  • the hydraulic unit Y includes an elastic body placed within the high pressure chamber 60, a check ball taking charge of opening and closing the oil hole 51, a check ball spring and a check ball gauge as the components thereof.
  • the bucket X is mounted around the hydraulic unit Y so as to cover the side of the above-mentioned main reservoir 52, and a sub-reservoir 40 communicating with the main reservoir 52 through an overflow recess 53 is formed around the hydraulic unit Y inside the main reservoir by a sleeve 30.
  • On the peripheral wall surface of the bucket X (illustrated at the top of the peripheral wall surface of the bucket X in the same drawing) is provided an oil supply port 20 for introducing working oil, supplied from an oil feed hole (not shown) at the cylinder head side, into the sub-reservoir 40.
  • an oil path 10 which opens in the sub-reservoir 40 after turning approximately one round therein.
  • the oil path 10 is formed in the sub-reservoir 40 as a separate path therefrom by using a ring body of the channel-shaped cross-section and securing the edges of an opening on the outer peripheral side to the inner surface of the bucket X.
  • Figs. 5(a), (b) and (c) show diagrammatically a position of the oil supply port 20 in Fig. 4 and the lowermost level Z of the clearance between the sleeve 30 and the body 70.
  • the oil supply port 20 in the case where the oil supply port 20 is positioned at a level higher than the above-mentioned lowermost level Z at the time of stoppage of the engine, as shown in Fig. 5, the oil supply port 20 provides an inlet for air and the clearance between the sleeve 30 and the body 70 provides an outlet for the working oil within the reservoirs 40 and 52, so that it leaks until the hatched portion (the vertical lowermost level Z of the above-mentioned clearance).
  • the above-mentioned clearance provides an inlet for air and the oil supply port 20 provides an outlet for the working oil within the reservoirs 40 and 52, and the action of leakage functions; however, the surface tension of the working oil in the clearance between the sleeve 30 and the body 70 prevents air from entering therein, and therefore, it is difficult for it to leak.
  • the working oil leaks from the oil supply port 20 when the environmental temperature is high in the daytime and the working oil expands, and air is drawn from the oil supply port 20 when the environmental temperature drops in night and the working oil contracts.
  • the oil path 10 is preferably designed so that the opening 18 thereof comes near the oil supply port 20, as shown in Fig. 7.
  • Figs. 8(a) and (b) are horizontal sectional views and longitudinal sectional views of hydraulic lash adjusters showing other embodiments (second to fourth embodiments) according to the present invention, respectively.
  • These oil paths 10 are provided turning substantially one round within the sub-reservoir 40.
  • Figs. 11(a) and (b) also show the construction of a further embodiment according to the present invention, and the oil path 10 is provided turning more than one round within the sub-reservoir 40.
  • Figs. 12 to 14 show a sixth embodiment according to the present invention, Fig. 12 showing a valve operating mechanism, Fig. 13 a longitudinal sectional view of a hydraulic lash adjuster and Fig. 14 a horizontal sectional view of the same lash adjuster.
  • a ring body 11A is integrally accommodated within a sub-reservoir 40 so that there are formed therein an annular sub-reservoir first chamber 12 along the inner periphery of a bucket X; a sub-reservoir second chamber 16 positioned inside the first chamber 12 and turning around a main reservoir 52; and an oil path 10 turning around along the border of the first and second chambers 12, 16 and communicating with the first and second chambers 12, 16, respectively.
  • the ring body 11A is so constructed that an oil path-defining wall 17 having an L-shaped cross section is integrally connected to the inside of the cylindrical longitudinal wall 13, which divides the sub-reservoir 40 into the first chamber 12 and the second chamber 16, and the oil path-defining wall 17 cooperates with the sleeve 30 to form the oil path 10.
  • the ring body 11A is integrally joined to, for example, the sleeve 30.
  • Figs. 12 to 14 show a sixth embodiment according to the present invention, Fig. 12 showing a valve operating mechanism, Fig. 13 a longitudinal sectional view of a hydraulic lash adjuster and Fig. 14 a horizontal sectional view of the same lash adjuster.
  • a ring body 11A is integrally accommodated within a sub-reservoir 40 so that there are formed therein an annular sub-reservoir first chamber 12 along the inner periphery of a bucket X; a sub-reservoir second chamber 16 positioned inside the first chamber 12 and turning around a main reservoir 52; and an oil path 10 turning around along the border of the first and second chambers 12, 16 and communicating with the first and second chambers 12, 16, respectively.
  • the ring body 11A is so constructed that an oil path-defining wall 17 having an L-shaped cross section is integrally connected to the inside of the cylindrical longitudinal wall 13, which divides the sub-reservoir 40 into the first chamber 12 and the second chamber 16, and the oil path-defining wall 17 cooperates with the sleeve 30 to form the oil path 10.
  • the ring body 11A is integrally joined to, for example, the sleeve 30.
  • an opening 14 Downwardly of the longitudinal wall 13 is provided an opening 14 through which the first chamber 12 communicates with the oil path 10.
  • an opening 18 through which the oil path 10 communicates with the sub-reservoir second chamber 16. That is, the oil supply port 20 communicates, through both the sub-reservoir first chamber 12 which turns around and the oil path 10 which turns around, with the sub-reservoir second chamber 16 communicating with the main reservoir 52, thereby providing a construction where it is more difficult for air to enter into the main reservoir 52 as compared with those of the above-mentioned first to fifth embodiments.
  • the ring body 11 is first accommodated within the bucket X, the sleeve 30 is thereafter accommodated in and further caulked and secured to the bucket X, so that the ring body 11 is integrally held between the sleeve 30 and the bucket face part.
  • the ring body 11, which is previously integrally joined to the sleeve 30, may be incorporated into the bucket, and then caulked and secured thereto.
  • Reference character 31 designates the caulked portion.
  • the oil supply port 20 will open into the sub-reservoir first chamber 12, and therefore, incorporating the ring body 11 at the time it is aligned with the oil supply port 20 of the bucket X is not necessary.
  • Figs. 15 and 16 show a seventh embodiment according to the present invention, Fig. 15 being an enlarged longitudinal sectional view of a lash adjuster and Fig. 16 being an enlarged horizontal sectional view of the lash adjuster (sectional view taken along Line XIV-XIV in Fig. 15).
  • a ring body 11B defines a sub-reservoir first chamber 12 at the face side of a bucket X, and an oil supply port 20 provided in the bucket X extends obliquely to communicate with the sub-reservoir first chamber 12.
  • the ring body 11B is so constructed that an oil path-defining wall 17 having a channel-shaped cross section is integrally connected to the lower edge of a cylindrical longitudinal wall 13, and the longitudinal wall 13 is curved outwardly at the upper end portion thereof so that its contact area with the bucket face portion is made larger to enhance a sealing property. Further, the outer surface of the oil path-defining wall 17 of the ring body 11B engages the inner peripheral surface of the bucket X to thereby position the ring body 11B in the bucket X.
  • Many other parts are the same in construction as those in the lash adjuster according to the above-mentioned sixth embodiment, and so, they are affixed with the same reference characters to omit the explanation thereof.
  • Figs. 17 to 19 show an eighth embodiment according to the present invention, Fig. 17 being an enlarged longitudinal sectional view of a lash adjuster and Figs. 18 and 19 being enlarged horizontal sectional views of the lash adjuster.
  • a ring body 11C is so constructed that an oil path 10 is formed spirally inside an oil path-defining wall 17 which is made to come into contact with the longitudinal wall of a sleeve 30 and the inner peripheral wall of the bucket X, and a vertical through-hole provided on the oil path-defining wall 17 forms an opening 18 which opens in a sub-reservoir second chamber 16.
  • the ring body 11C is so constructed that an oil path-defining wall 17 having a channel-shaped cross section is integrally connected to the lower edge of a cylindrical longitudinal wall 13 which divides a sub-reservoir 40 into a first chamber 12 and a second chamber 16; however, the oil path-defining wall 17 is formed with a groove extending spirally, which forms the oil path 10 turning one and a half rounds. Further, the oil path-defining wall 17 engages the inner peripheral surface of a bucket and the longitudinal wall of a sleeve to position the ring body 11c.
  • Figs. 20 to 22 show a ninth embodiment according to the present invention, Fig. 20 being an enlarged longitudinal sectional view of a lash adjuster and Figs. 21 and 22 being enlarged horizontal sectional views of the lash adjuster.
  • the ring body 11D in the ninth embodiment is composed of longitudinal walls 13 having an H-shaped cross section, a sub-reservoir fist chamber 12 being formed outside the outer longitudinal wall 13a and a sub-reservoir second chamber 16 being formed inside the inner longitudinal wall 13b.
  • a sub-reservoir fist chamber 12 being formed outside the outer longitudinal wall 13a
  • a sub-reservoir second chamber 16 being formed inside the inner longitudinal wall 13b.
  • two vertical oil paths 10a and 10b In the region interposed between the inner and outer longitudinal walls 13a and 13b are formed two vertical oil paths 10a and 10b, and the two oil paths 10a and 10b communicate with each other through a hole 10c provided on the horizontal partition wall.
  • an opening 18 through which an oil path 10a communicates with the second chamber.
  • Figs. 23 to 25 show a tenth embodiment according to the present invention, Fig. 23 being an enlarged longitudinal sectional view of a lash adjuster and Figs. 24 and 25 being enlarged horizontal sectional views of the lash adjuster.
  • a ring body 11E in the tenth embodiment comprises an extended portion with a modified T-shaped cross section which defines an oil path 10 and which is integrally connected inside a cylindrical longitudinal wall 13.
  • a vertical through-hole 18e Through which the oil path 10 and a sub-reservoir second chamber communicate with each other.
  • an oil path 10e turning around the longitudinal wall of a sleeve, by the extended portion 17 with a modified T-shaped cross section.
  • the oil path 10e and the oil path 10 communicate with each other through a cut-out portion 17e provided on the T-shaped extended portion 17.
  • a small air vent hole 30a On the longitudinal wall of the sleeve 30 facing the oil path 10e is provided a small air vent hole 30a, so that air within the sub-reservoir 40 is positively led out of both the small air vent hole 30a and the clearance between the sleeve and the body, thereby preventing air from entering into the main reservoir 52.
  • Figs. 26 to 28 show an eleventh embodiment according to the present invention, Fig. 26 being an enlarged longitudinal sectional view of a lash adjuster and Figs. 27 and 28 being enlarged horizontal sectional views of the lash adjuster.
  • the oil path 10 and the oil path 10e communicate with each other through one cut-out portion formed on the T-shaped extended portion 17; however, a ring body 11F is so constructed that 8 cut-out portions 17f equally arranged in the peripheral direction are provided at the lower edge of the longitudinal wall of the T-shaped extended portion, and the oil path 10 and the oil path 10e communicate with each other through the cut-out portions 17f.
  • Other parts are the same in construction as those of the ring body shown in the above-mentioned tenth embodiment, and so, the explanation thereof is omitted.
  • Figs. 29 to 31 show a twelfth embodiment according to the present invention, Fig. 29 being an enlarged longitudinal sectional view of a lash adjuster and Fig. 30 being an enlarged horizontal sectional view of the lash adjuster.
  • a ring body 11G is so constructed that a flange-like horizontal extended portion, which cooperates with a sleeve 30 to form an oil path 10, is integrally connected inside a cylindrical longitudinal wall 13 which separates and defines a sub-reservoir first chamber 12 and a sub-reservoir second chamber 16.
  • Other parts are the same in construction as those of the ring body 11F shown in the above-mentioned eleventh embodiment, and are affixed with the same reference characters to omit the explanation thereof.
  • the present embodiment shows the construction of a direct acting type hydraulic lash adjuster in a horizontal opposed type engine in which a valve operating mechanism is horizontally provided; however, of course, the construction of the present invention may be applied also to a direct acting type hydraulic lash adjuster in which a valve operating mechanism is obliquely provided, as shown in Figs. 32 (a) and (b), and provides similar advantageous effects.
  • the direct acting type hydraulic lash adjuster as set forth in Claim 1 prevents an entrance of air into both the main and sub-reservoirs, because in the case where leakage of the working oil from the above-mentioned clearance occurs at the time of stoppage of an engine, a drop in the level of the working oil (an entrance of air) due to such a leakage only occurs in the oil path. Accordingly, also when an internal combustion engine is restarted from the bottomed condition, suction of air into the high pressure chamber is suppressed, and therefore, the primary function to be fulfilled by the hydraulic lash adjuster is most effective.
  • the direct acting type hydraulic lash adjuster as set forth in Claim 4 comprises a sub-reservoir first chamber in the form of a circular ring, and therefore, whatever position the ring body, which divides the sub-reservoir into a first chamber and a second chamber and forms an oil path communicating with both chambers, occupies in the peripheral direction with respect to the bucket, communication of the oil supply port with the sub-reservoir first chamber is ensured, so that when the oil lash adjuster is incorporated, that is, when the ring body is incorporated into the bucket, there is no need of the ring body being positioned in the peripheral direction, and accordingly, assembly of the lash adjuster is simplified.

Abstract

Un dispositif de réglage de poussoir hydraulique à effet direct comprend un module hydraulique Y destiné à ce dispositif et incorporé dans un logement (X) doté d'un orifice d'entrée d'huile (2), et un sous-réservoir (4) destiné à fournir l'huile de fonctionnement envoyée via l'orifice d'entrée d'huile (2) vers un réservoir principal (52) placé du côté du module hydraulique (Y). Ce réservoir est formé autour de ce module hydraulique (Y) grâce à l'installation d'un manchon (3) de façon telle qu'il parte de l'intérieur du logement (X) pour aller entourer le module hydraulique (Y). Une conduite d'huile (1) y est ménagée et communique avec l'orifice d'entrée d'huile (2) et passe à la périphérie du sous-réservoir (4) où elle vient déboucher, de façon que l'huile qui se trouve dans ce sous-réservoir (4) ne puisse en ressortir facilement, ce qui empêche l'entrée d'air dans ledit sous-réservoir (4) et dans le réservoir principal (52).
EP9292909708A 1992-04-27 1992-05-11 Dispositif de reglage de poussoir hydraulique a effet direct. Withdrawn EP0591533A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP10817092 1992-04-27
JP108170/92 1992-04-27
PCT/JP1992/000598 WO1993022542A1 (fr) 1992-04-27 1992-05-11 Dispositif de reglage de poussoir hydraulique a effet direct

Publications (2)

Publication Number Publication Date
EP0591533A1 true EP0591533A1 (fr) 1994-04-13
EP0591533A4 EP0591533A4 (fr) 1994-10-19

Family

ID=14477764

Family Applications (1)

Application Number Title Priority Date Filing Date
EP9292909708A Withdrawn EP0591533A4 (fr) 1992-04-27 1992-05-11 Dispositif de reglage de poussoir hydraulique a effet direct.

Country Status (2)

Country Link
EP (1) EP0591533A4 (fr)
WO (1) WO1993022542A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0770764A1 (fr) * 1995-10-27 1997-05-02 EATON AUTOMOTIVE S.p.A. Poussoir hydraulique sans soudure muni d'un dispositif de siphon
WO1997028356A1 (fr) * 1996-02-03 1997-08-07 INA Wälzlager Schaeffler oHG Poussoir pour mecanisme de distribution d'un moteur a combustion interne
US5928734A (en) * 1995-01-05 1999-07-27 Empe Findlay Industries Gmbh Soft trim part for the interior finishing of, in particular, motor vehicles and method for the manufacture of a soft trim part
US6695998B2 (en) 2001-11-09 2004-02-24 Jsp Licenses, Inc. Mold apparatus and method for one step steam chest molding

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990015226A1 (fr) * 1989-05-23 1990-12-13 Eaton Corporation Poussoir hydraulique

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59194507U (ja) * 1983-05-12 1984-12-24 三菱マテリアル株式会社 バルブリフタ−
JPS6121805U (ja) * 1984-07-13 1986-02-08 愛知機械工業株式会社 油圧式バルブリフタ−
DE3628619A1 (de) * 1986-08-22 1988-03-03 Schaeffler Waelzlager Kg Sich selbsttaetig hydraulisch einstellender ventilstoessel
JPH01173303U (fr) * 1988-01-14 1989-12-08
DE3810436A1 (de) * 1988-03-26 1989-10-12 Schaeffler Waelzlager Kg Sich selbsttaetig hydraulisch einstellender ventilstoessel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990015226A1 (fr) * 1989-05-23 1990-12-13 Eaton Corporation Poussoir hydraulique

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO9322542A1 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5928734A (en) * 1995-01-05 1999-07-27 Empe Findlay Industries Gmbh Soft trim part for the interior finishing of, in particular, motor vehicles and method for the manufacture of a soft trim part
EP0770764A1 (fr) * 1995-10-27 1997-05-02 EATON AUTOMOTIVE S.p.A. Poussoir hydraulique sans soudure muni d'un dispositif de siphon
WO1997028356A1 (fr) * 1996-02-03 1997-08-07 INA Wälzlager Schaeffler oHG Poussoir pour mecanisme de distribution d'un moteur a combustion interne
US5975038A (en) * 1996-02-03 1999-11-02 Ina Walzlager Schaeffler Ohg Pushrod for operating the valve gear mechanism of an internal combustion engine
US6695998B2 (en) 2001-11-09 2004-02-24 Jsp Licenses, Inc. Mold apparatus and method for one step steam chest molding

Also Published As

Publication number Publication date
WO1993022542A1 (fr) 1993-11-11
EP0591533A4 (fr) 1994-10-19

Similar Documents

Publication Publication Date Title
US4437439A (en) Valve tappet
US4392462A (en) Inverted bucket tappet with seal
US4397271A (en) Semi-self-contained hydraulic lash adjuster
US20070287562A1 (en) Hydraulic Tensioner For A Traction Mechanism Of An Internal Combustion Engine
US5839413A (en) Quick start HEUI system
US6148789A (en) Engine-pressurized prestart oiler
US4648360A (en) Hydraulic valve tappet
US4191142A (en) Self-contained hydraulic lash adjuster
US4876994A (en) Hydraulic play compensation element
EP0591533A1 (fr) Dispositif de reglage de poussoir hydraulique a effet direct
EP0361637B1 (fr) Compensateur hydraulique du jeu d'une soupape
JPS61265316A (ja) カートリッジ組立品を取付ける胴を有する自給型ラッシュ調整機
EP0552369A1 (fr) Dispositif hydraulique de reglage de jeu muni d'un event
US5595149A (en) Method of first filling of a hydraulic valve actuating device
US3139078A (en) Horizontal hydraulic valve lifter
US2873729A (en) Self-contained type hydraulic valve lifter
EP0395311B1 (fr) Poussoir hydraulique
GB2129883A (en) Liquid fuel injection pump
US4470382A (en) Valve lash adjuster for an internal combustion engine
JPS60206915A (ja) 弁間隙自動補正装置
JPH0610623A (ja) 直動型油圧ラッシュアジャスタ
JPH05288019A (ja) 内燃機関用油圧ラッシュアジャスタ
EP0400602B1 (fr) Compensateur hydraulique de jeu du type à action directe
CN214063088U (zh) 柱塞组件和液压间隙调节器
JP2782088B2 (ja) 直動型油圧ラッシュアジャスタ

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB

17P Request for examination filed

Effective date: 19940504

A4 Supplementary search report drawn up and despatched

Effective date: 19940901

AK Designated contracting states

Kind code of ref document: A4

Designated state(s): DE FR GB

17Q First examination report despatched

Effective date: 19950505

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19950916