US3913538A - Hydraulic valve-play compensating element for internal combustion engines - Google Patents

Hydraulic valve-play compensating element for internal combustion engines Download PDF

Info

Publication number
US3913538A
US3913538A US401547A US40154773A US3913538A US 3913538 A US3913538 A US 3913538A US 401547 A US401547 A US 401547A US 40154773 A US40154773 A US 40154773A US 3913538 A US3913538 A US 3913538A
Authority
US
United States
Prior art keywords
space
supply space
internal combustion
defoaming
compensating 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.)
Expired - Lifetime
Application number
US401547A
Other languages
English (en)
Inventor
Erich Ableitner
Burkhard Ott
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.)
Daimler Benz AG
Original Assignee
Daimler Benz AG
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 Daimler Benz AG filed Critical Daimler Benz AG
Application granted granted Critical
Publication of US3913538A publication Critical patent/US3913538A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F01L1/2405—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically by means of a hydraulic adjusting device located between the cylinder head and rocker arm

Definitions

  • the present invention relates to a hydraulic valveplay compensating element for internal combustion engines, which includes two'parts longitudinally displaceable relative to one another, which enclose therebetween a pressure space, separated by a check valve from a supply space which is connected with the lubricating oil circulatory system of the internal combustion engine.
  • Valveplay compensating elements in which the supply space is connected directly with the lubricating oil circulatory system of the internal combustion engine by way of a tap line, have not found acceptance to date in practice because it was not possible with tolerable expenditures to so defoam the lubricating oil foamed by the admixture of air, that only air-free oil reaches the pressure space. Tests to achieve a removal of air bubbles by a connection of the pressure space with the supply space by way of leakage oil bores or by a connection of the pressure space with temporarily free and throttled leakage oil bores leading out of the element, did not lead to a success when these arrangements were provided in elements for fast-running internal combustion engines.
  • the present invention is therefore concerned with the task to so construct a hydraulic valve-play compen' sating element with direct connection to the lubricating oil circulatory system that also at high rotational speeds of the internal combustion engine, a good defoaming with rapid removal of the air components takes place.
  • the supply space is in communication in through-flow relation with the lubricating oil circulatory system and in that means are provided in the supply space upstream of the check valve which defoam the oil flow.
  • a safe defoaming with reliable removal of the separated-out air components can be realized by the present invention, which is not influenced by high rotational speeds of the internal combustion engine so that the valve actuation can operate clearance-free also in this rotational speed range with the requisite hydraulic hardness in the valve-play compensating element.
  • the means for defoaming may be arranged in a structurally and functionally favorable manner within a separate space which is in communication both with the inlet of the check valve as also with the supply space and is arranged within the supply space separated therefrom.
  • This separate space may be connected with the sup ply space by one or several bores at a location which is disposed with the installed element at or in proximity to the upper end of the separate space.
  • the means for defoaming may consist in a simple manner of a helix having a slight pitch which slows down the oil stream.
  • the means for defoaming may also be constructed as labyrinth and finally they may also consist of a filter.
  • Another object of the present invention resides in a hydraulic valve play compensating element for internal combustion engines which is very reliable in operation, yet involves readily acceptable expenditures for the defoaming of the air.
  • a further object of the present invention resides in a hydraulic valve play compensating element for internal combustion engines which assures a reliable defoaming of the lubricating air by extremely simple means as well as a reliable removal of the air bubbles under all operating conditions.
  • Still a further object of the present invention resides in a hydraulic valve play compensating element for internal combustion engines which is capable of operating also at high rotational speeds without jeopardizing the defoaming of the lubricating oil.
  • FIG. 1 is a partial cross-sectional view through a valve actuating mechanism for an internal combustion engine equipped with a valve-play compensating element having a helix for defoaming the oil in accordance with the present invention
  • FIGS. 2 and 3 are partial cross-sectional views illustrating modified embodiments of a valve-play compen sating element equipped with a labyrinth for defoaming the oil in accordance with the present invention.
  • FIGS. 4 and 5 are partial cross-sectional views through valve-play compensating elements with filters for defoaming the lubricating oil in accordance with the present invention. 7
  • valve actuating mechanism for an i ntemal combustion engine includes a cam shaft 1, a rocker arm 2, a valve 3, of which only the valve stem is shown, and a hydraulic valve-play compensating element generally designated by reference numeral4.
  • the valve-play compensating element 4 is arranged in a bore 5 of the cylinder head 6 of the internal combustion engine and includes two parts 7 and 8.
  • the part 7 is constructed cylinderlike and is fixedly arranged at the cylinder head 6 by conventional means.
  • the part 8 is constructed pistonlike and is longitudinallydisplaceably supported in the part 7.
  • the upper end of the valve-play compensating part 8 serves as bearing support 9 for the rocker arm 2.
  • the two parts 7 and 8 enclose therebetween a pressure space 10 which is connected by way of a check valve 1 l with a supply space 12 disposed below the part 7.
  • the supply space 12 is in communication in throughflow relationship with the lubricating oil circulatory system of the internal combustion engine in that it is connected, on the one hand, by way of a bore 13 with a main oil channel supplying lubricating oil and by way of a channel 14 and bores 15 and 16 with the bearing 9 to be lubricated.
  • the connection according to the present invention is so realized that lubricating oil flows through the space 12 in the course of its flow path from bore 13 into bores 15 and 16 by way of channel 14.
  • An essentially cylindrical member According to FIG. 4, a in the member 17 whereas according to FIG. 5, also a paper filter 28 can be used for the same purpose.
  • valve-play com- :pensating element I .As t'o'the rest, theoperation of the valve-play com- :pensating element is conventional so that a further de- ,tailed descriptionthereof is dispensed with herein.
  • a labyrinth 23 may also be arranged in the member 17, as shown in FIG. 2, in lieu of a helix, whereby the lubricatingoil has to flow through the labyrinth 23 in the axial direction.
  • FIG. 2 further illustrates, in lieu of bores (FIG. 1), bores 24 and 25 disposed one behind the other in the axial direction may be provided,
  • FIG. 3 illustrates a labyrinth 26in the member 17 of the mechanism which consists of annular disks disposed one above the other with respectively offset passage bores.
  • steel-wool filter 27 is arranged While we have shown and described several embodiments in accordance with the present invention, it is understood that the same is not limited thereto but is susceptible of numerous changes and modifications as known to those skilled in the art, and we therefore do not wish to be limited to the details shown and described herein but intend to cover all such changes and modifications as are encompassed by the scope of the ment includes two members longitudinally displaceable relative toone another, which members enclose therebetween a pressure space separated by a check valve means from a supply space, characterized in that a lubricating oil circulatory system is provided, the supply space is operatively connected with the lubricating oil circulatory system, a separate oil receiving space communicating with said check valve means is provided in said supply space, bore means are provided for communicating said supply space with said separate oil receiving space, and in that a defoaming means is arranged in said separate oil receiving space for defoaming the oil flowing into said pressure space.
  • a hydraulic valve play compensating element characterized in that the supply space is in communication with the lubricating oil circulatory system in such a manner that a flow of the lubricating oil takes place through the supply space in the 4 course of the lubrication of other parts of an internal combustion engine.
  • a hydraulic valve play compensating element characterized in that said parts are cal member disposed in said supply space, said defoaming means including a labyrinth means arranged in said cylindrical member whereby the oil flow in said cylindrical member is substantially in the axi thereof.
  • a hydraulic valve play compensating element characterized in that a further bore means is provided for discharging separated air'from said separate oil receiving space.
  • a hydraulic valve play compensating element characterized in that said separate oil receiving space is defined by a substantially cylindrical member disposed in said supply space, said defoaming means including a labyrinth means arranged in said cylindrical member, said labyrinth means comprising at least two annular disc members disposed one above the other in said cylindrical member having offset passage bores to direct the flow from said supply space to said check valve means.
  • a hydraulic valve play compensating element according to claim 7, characterized in that 'a further bore means is provided for discharging separated air from said separate oil receiving space.
  • Ahydraulic valve play compensating element characterized in that two annular discs are provided having offset passage bores, and in that a filter element is disposed between said two annular discs.
  • a hydraulic valve play compensating element according to claim 9, characterized in that a further bore means is provided for discharging separated air from said separate oil receiving space.
  • a hydraulic valve play compensating element characterized in that said filter element is a steelwool filter.
  • a hydraulic valve play compensating element characterized-in that said separate oil receiving space is defined by a substantially cylindrical member disposed in said supply space, said defoaming means including an annular disc element arranged in said cylindrical member, said disc element including a peripheral edge portion spaced from an internal wall of said cylindrical member to define a passage means, and in that a filter element is disposed in said'passage means.
  • a hydraulic valve play compensating element characterized in that a further bore means is provided for discharging separated air from said separate oil receiving space.
  • a hydraulic valve play compensating element for internal combustion engines which element includes two members longitudinally displaceable relative to one another, which members enclose therebetween a eral bore means.
  • the defoamingmeans are arranged in a separate space which is in communication both with the inlet of the check valve means as also with the supply space, said separate space is arranged within the supply space, though separated therefrom, and in that the separate. space is connected with the supply space by at least one bore means at a location which is disposed at least in proximity to the upperend of the separate space.
  • a hydraulic valve play compensating element according to claim 6 characterized in that said separate space is connected with the supply space by way of sev- 17.
  • ing means includes a helix withslight pitch which slows down the oil flow.
  • bore means are provided for communicating said supply space with said separate oil receiving space, means are provided in said separateoil receiving space upstream of the check valve means for defoaming the oil flow, said defoaming means including a labyrinth 24.
  • An internal combustion engine comprising: a cylinder head means, a bore provided in said cylinder head means, a hydraulic compensating means including two members longitudinally displaceable relative to one another disposedin said bore, a pressure space"enclosed by said two members, a lubricating oil circulatory system for the internal combustion engine, a supply space provided in said bore operatively connected with said lubricating oil circulatory system, a check valve means for separating said pressure space from said supply space, a separate oil receiving means arranged in said supply space and communicating with said check valve means, bore means for communicating said supply space with said separate oil receiving space, and a defoaming means arranged in said separate oil receiving space for defoaming the oil flowing i 19.
  • a hydraulic valve play compensating element according to claim 6, characterized in that the defoaming means include a filter means.
  • a hydraulic valve play compensating element characterized in that the supply space is in communication with the lubricating oil circulatory system in such a manner that a flow of lubricating oil takes place through the supply space in the course of the lubrication of other parts of an internal combustion engine.
  • a hydraulic valve play compensating element for internal combustion engines which element includes two members longitudinally displaceable relative to one another, which members enclose therebetween a pressure space separated by way of a check-valve means from a supply space, characterized in that a ludefoaming the oil flow, said defoaming means includes a helical member having a slight pitch in the flow direction of the oil for slowing down the oil flow from said supply space to said check valve means.
  • a hydraulic valve play compensating element for internal combustion engines which element includes two members longitudinally displaceable relative to one another, which members enclose therebetween a pressure space separated by way of a check valve means from a supply space, characterized in that a lubricating oil system is provided, the supply space is operatively connected with the lubricating oil circulatory system, a separate oil receiving space in communication with the check valve means is provided in said supinto said pressure space.
  • An internal combustion engine according to claim 24, further comprising a valve actuating mechanism, and wherein means are provided for communicating said supply space with said valve actuating mechanism for lubricating said mechanism.
  • defoaming means includes a helical member arranged in said separate oil receiving space having a slight pitch in the flow direction of the oil for slowing down the oil flow from said supply space to said check valve means.
  • said separate oil receiving space is defined by a substantially cylindrical member disposed in said supply space, said defoaming means including a labyrinth means arranged in said cylindrical member, said labyrinth means comprising at least two annular disc members disposed one above the other in said cylindrical member having offset passage bores to direct the flow from said supply space to said check valve means.
  • said defoaming means including an annular disc element arranged in said cylindrical member, said disc element including a peripheral edge portion spaced from an internal wall of said cylindrical member to define a passage means, and a filter element 7 disposed in said passage means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
US401547A 1972-09-27 1973-09-27 Hydraulic valve-play compensating element for internal combustion engines Expired - Lifetime US3913538A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722247459 DE2247459A1 (de) 1972-09-27 1972-09-27 Hydraulisches ventilspiel-ausgleichselement fuer brennkraftmaschinen

Publications (1)

Publication Number Publication Date
US3913538A true US3913538A (en) 1975-10-21

Family

ID=5857573

Family Applications (1)

Application Number Title Priority Date Filing Date
US401547A Expired - Lifetime US3913538A (en) 1972-09-27 1973-09-27 Hydraulic valve-play compensating element for internal combustion engines

Country Status (5)

Country Link
US (1) US3913538A (it)
DE (1) DE2247459A1 (it)
FR (1) FR2217530B1 (it)
GB (1) GB1394635A (it)
IT (1) IT994300B (it)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4098240A (en) * 1975-02-18 1978-07-04 Eaton Corporation Valve gear and lash adjustment means for same
US4538559A (en) * 1982-09-03 1985-09-03 Toyota Jidosha Kabushiki Kaisha Engine cam for use in internal combustion engine
JPS60206914A (ja) * 1984-03-31 1985-10-18 Nittan Valve Kk 油圧式弁間隙自動補正装置
DE3623238A1 (de) * 1986-07-10 1988-02-04 Bayerische Motoren Werke Ag Vorrichtung zur bereitstellung von im wesentlichen luftfreiem schmieroel
US5311845A (en) * 1990-10-12 1994-05-17 Nittan Valve Co., Ltd. Oil pressure lash adjuster equipped with air vent
WO2006005404A1 (de) * 2004-07-10 2006-01-19 Schaeffler Kg Einrichtung zur filterung von schmieröl
WO2008101793A1 (de) * 2007-02-21 2008-08-28 Schaeffler Kg Ventiltrieb einer brennkraftmaschine mit einem schlepphebel
US20090050102A1 (en) * 2007-08-24 2009-02-26 Strandburg Alan G Oil filter having an integral metering orifice for a valve lifter oil manifold assembly
WO2018224074A1 (de) * 2017-06-07 2018-12-13 Schaeffler Technologies AG & Co. KG Hydraulisches abstützelement

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56167808A (en) * 1980-05-28 1981-12-23 Toyota Motor Corp Oil feeder for hydraulic equipment of internal combustion engine
US4334855A (en) * 1980-07-21 1982-06-15 Honeywell Inc. Furnace control using induced draft blower and exhaust gas differential pressure sensing
DE4226163A1 (de) * 1992-08-07 1994-02-10 Schaeffler Waelzlager Kg Motorventilabschaltung mittels Nockenrollenverlagerung
DE4234868C2 (de) * 1992-10-16 1999-10-28 Schaeffler Waelzlager Ohg Verfahren zur Herstellung eines Schlepp- oder Kipphebels

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2096257A (en) * 1935-06-17 1937-10-19 Moorhouse Alfred Hydraulic valve tappet
US2098115A (en) * 1936-02-10 1937-11-02 Eaton Mfg Co Hydraulic valve lifter
US2145484A (en) * 1937-01-25 1939-01-31 Charles E Johnson Hydraulic tappet
US2153097A (en) * 1937-07-19 1939-04-04 Moorhouse Alfred Tappet
US2246330A (en) * 1940-03-14 1941-06-17 Eaton Mfg Co Hydraulic tappet construction
US2250752A (en) * 1937-11-10 1941-07-29 Eaton Mfg Co Valve tappet
US2267535A (en) * 1941-03-06 1941-12-23 Johnson Products Inc Hydraulic tappet
US2309740A (en) * 1941-07-24 1943-02-02 Eaton Mfg Co Internal combustion engine
US2942595A (en) * 1958-04-09 1960-06-28 Johnson Products Inc Hydraulic tappet
US3025842A (en) * 1961-02-06 1962-03-20 Gen Motors Corp Self-contained hydraulic lash adjuster
US3314404A (en) * 1966-03-21 1967-04-18 Earl A Thompson Engine valve operating mechanism

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR767993A (fr) * 1933-11-25 1934-07-27 Wilcox Rich Corp Mécanisme de commande de soupape
US2220336A (en) * 1940-01-22 1940-11-05 Johnson Products Inc Hydraulic tappet
FR929582A (fr) * 1945-06-27 1947-12-31 Eaton Mfg Co Perfectionnements aux poussoirs de soupape à compensation automatique
FR1178986A (fr) * 1956-07-17 1959-05-19 Ford Poussoir hydraulique
US2938508A (en) * 1959-06-04 1960-05-31 Gen Motors Corp Horizontally operable hydraulic valve lifter
US3070080A (en) * 1961-06-30 1962-12-25 Gen Motors Corp Horizontal valve lifter

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2096257A (en) * 1935-06-17 1937-10-19 Moorhouse Alfred Hydraulic valve tappet
US2098115A (en) * 1936-02-10 1937-11-02 Eaton Mfg Co Hydraulic valve lifter
US2145484A (en) * 1937-01-25 1939-01-31 Charles E Johnson Hydraulic tappet
US2153097A (en) * 1937-07-19 1939-04-04 Moorhouse Alfred Tappet
US2250752A (en) * 1937-11-10 1941-07-29 Eaton Mfg Co Valve tappet
US2246330A (en) * 1940-03-14 1941-06-17 Eaton Mfg Co Hydraulic tappet construction
US2267535A (en) * 1941-03-06 1941-12-23 Johnson Products Inc Hydraulic tappet
US2309740A (en) * 1941-07-24 1943-02-02 Eaton Mfg Co Internal combustion engine
US2942595A (en) * 1958-04-09 1960-06-28 Johnson Products Inc Hydraulic tappet
US3025842A (en) * 1961-02-06 1962-03-20 Gen Motors Corp Self-contained hydraulic lash adjuster
US3314404A (en) * 1966-03-21 1967-04-18 Earl A Thompson Engine valve operating mechanism

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4098240A (en) * 1975-02-18 1978-07-04 Eaton Corporation Valve gear and lash adjustment means for same
US4538559A (en) * 1982-09-03 1985-09-03 Toyota Jidosha Kabushiki Kaisha Engine cam for use in internal combustion engine
JPS60206914A (ja) * 1984-03-31 1985-10-18 Nittan Valve Kk 油圧式弁間隙自動補正装置
JPH0625526B2 (ja) 1984-03-31 1994-04-06 日鍛バルブ株式会社 油圧式弁間隙自動補正装置
DE3623238A1 (de) * 1986-07-10 1988-02-04 Bayerische Motoren Werke Ag Vorrichtung zur bereitstellung von im wesentlichen luftfreiem schmieroel
DE3623238C2 (it) * 1986-07-10 1988-09-08 Bayerische Motoren Werke Ag, 8000 Muenchen, De
US5311845A (en) * 1990-10-12 1994-05-17 Nittan Valve Co., Ltd. Oil pressure lash adjuster equipped with air vent
US20070272192A1 (en) * 2004-07-10 2007-11-29 Peter Sailer Device for Filtering Lubricating Oil
WO2006005404A1 (de) * 2004-07-10 2006-01-19 Schaeffler Kg Einrichtung zur filterung von schmieröl
WO2008101793A1 (de) * 2007-02-21 2008-08-28 Schaeffler Kg Ventiltrieb einer brennkraftmaschine mit einem schlepphebel
DE102007008409A1 (de) * 2007-02-21 2008-08-28 Schaeffler Kg Ventiltrieb einer Brennkraftmaschine mit einem Schlepphebel
US20090050102A1 (en) * 2007-08-24 2009-02-26 Strandburg Alan G Oil filter having an integral metering orifice for a valve lifter oil manifold assembly
US7549405B2 (en) * 2007-08-24 2009-06-23 Delphi Technologies, Inc. Oil filter having an integral metering orifice for a valve lifter oil manifold assembly
WO2018224074A1 (de) * 2017-06-07 2018-12-13 Schaeffler Technologies AG & Co. KG Hydraulisches abstützelement
CN110709586A (zh) * 2017-06-07 2020-01-17 舍弗勒技术股份两合公司 液压支撑元件
US11459915B2 (en) * 2017-06-07 2022-10-04 Schaeffler Technologies AG & Co. KG Hydraulic support element

Also Published As

Publication number Publication date
FR2217530B1 (it) 1976-10-01
DE2247459A1 (de) 1974-04-04
FR2217530A1 (it) 1974-09-06
IT994300B (it) 1975-10-20
GB1394635A (en) 1975-05-21

Similar Documents

Publication Publication Date Title
US3913538A (en) Hydraulic valve-play compensating element for internal combustion engines
US3304925A (en) Hydraulic valve lifter
US3809033A (en) Rocker arm engine brake system
US3875908A (en) Valve gear and lash adjuster for same
US4441465A (en) Lash adjuster oil-supplying device
US4098240A (en) Valve gear and lash adjustment means for same
JP2950984B2 (ja) 弁装置
US4279226A (en) Hydraulic tappet for an internal combustion engine having an overhead camshaft
US4481913A (en) Hydraulic lash adjuster oil metering ball valve
US3799129A (en) Hydraulic lash adjuster oil metering means
US2007197A (en) Fuel injection device
US3704696A (en) Hydraulic valve lifter
US2109459A (en) Internal combustion engine
US3670707A (en) Clearance compensating mechanism, especially for valve drives of internal combustion engines
US3875910A (en) Device for adjusting and holding the valve play in internal combustion engines
US3703178A (en) Single-cylinder internal combustion engine
US2126885A (en) Valve gear
US2738861A (en) Engine cylinder lubricating means
US2401631A (en) Engine
US2496449A (en) Internal-combustion engine
US2678702A (en) Bearing lubrication
JPH0510481B2 (it)
JPS59208112A (ja) ラツシユ調整可能なバルブロツカア−ム
US3498273A (en) Antipump-up tappet
US2992639A (en) Non-seizing hydraulic valve lifter