EP0386474B1 - Sich selbsttätig hydraulisch einstellender Ventilstössel - Google Patents

Sich selbsttätig hydraulisch einstellender Ventilstössel Download PDF

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Publication number
EP0386474B1
EP0386474B1 EP90102264A EP90102264A EP0386474B1 EP 0386474 B1 EP0386474 B1 EP 0386474B1 EP 90102264 A EP90102264 A EP 90102264A EP 90102264 A EP90102264 A EP 90102264A EP 0386474 B1 EP0386474 B1 EP 0386474B1
Authority
EP
European Patent Office
Prior art keywords
guide sleeve
bore
hollow cylindrical
cylindrical wall
valve tappet
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
EP90102264A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0386474A1 (de
Inventor
Georg Dr.Ing.E.H.Dipl.-Kfm. Schaeffler
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.)
INA Waelzlager Schaeffler OHG
Original Assignee
INA Waelzlager Schaeffler OHG
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 INA Waelzlager Schaeffler OHG filed Critical INA Waelzlager Schaeffler OHG
Publication of EP0386474A1 publication Critical patent/EP0386474A1/de
Application granted granted Critical
Publication of EP0386474B1 publication Critical patent/EP0386474B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F01L1/245—Hydraulic tappets
    • F01L1/25—Hydraulic tappets between cam and valve stem

Definitions

  • the invention relates to an automatically hydraulically adjusting valve tappet, which is arranged in a guide bore of a cylinder head of an internal combustion engine, and against whose one end face a control cam runs, and which, on the other hand, rests with a second end face against the end of a valve stem, the valve tappet being made from a cup Housing consists, which comprises a hollow cylindrical wall, which is closed at one end by a bottom, against which the control cam runs from the outside, and which has a cylindrical guide sleeve concentric to the hollow cylindrical wall, which ends at one end towards the bottom and at the other into the Extends the center of a disc part, which merges with its outer circumference into the hollow cylindrical wall of the housing, as a result of which an annular oil reservoir is delimited between the hollow cylindrical wall and the cylindrical guide sleeve, which axially leading bore is supplied with oil, the actual hydraulic lash adjuster being longitudinally displaceably guided in the guide sleeve, which is formed by a piston and an overlapping
  • the guide sleeve is connected directly to the floor at its end facing away from the disk part. Deflections of the floor, which occur during operation when the cam runs up, are directly communicated to the guide sleeve and the disk part. As a result of the high frequency of these deflections, there is a risk that breaks may occur on the guide sleeve and / or the disk part, or that the connection of the disk part to the bore of the hollow cylindrical outer wall, which is often done by welding, is destroyed (DE-A-35 28 432).
  • the invention has for its object to avoid the disadvantages while maintaining the advantages of this known construction, and in particular to ensure that occurring floor deflections have no influence on the guide sleeve and parts connected to it.
  • the guide sleeve having at its end adjacent to the bottom an approximately radially outwardly directed flange which is made in one piece with it, which extends at a distance from the bottom and extends to the bore of the hollow cylindrical wall, and in that the guide sleeve is liquid-tightly connected to the pane part. In this way, the guide sleeve is safely separated from the ground, so that its deflections can no longer have any adverse effects on the guide sleeve.
  • valve tappet is known in which the guide sleeve, to which the disk part is directly connected, is surrounded by a further sleeve. This works in the area of the floor additional sleeve into an outward flange.
  • the use of a further sleeve on the one hand significantly increases the mass of the valve tappet, and on the other hand the completion of the hydraulically adjustable valve tappet produced as a mass product is considerably more complex.
  • the flange itself can be so slightly funnel-shaped that it is only in its radially outermost region in contact with the inner surface of the bottom. It then only has contact with the floor at a point where floor deflections no longer have an effect.
  • contact between the flange and the inner surface of the base can also be completely ruled out in that the flange is supported on a shoulder of the hollow cylindrical wall which is provided at a short distance from the base.
  • the disc part in its center with a short collar which is directed axially towards the bottom and which receives the end of the guide sleeve. If it proves to be additionally necessary, the disk part and the guide sleeve can be connected to one another in a liquid-tight manner by welding, soldering, gluing or the like. It is also possible within the scope of the invention to connect the guide sleeve and the disk part to one another by means of an annular part made of polymeric material which receives the free ends of the guide sleeve on the one hand and the disk part on the other hand in circumferential grooves and at the same time seals liquid-tight.
  • the invention also offers the variant of designing the disk part in such a way that at its radially outer edge it merges into a hollow cylindrical sleeve, which lies with its outer jacket in the bore of the hollow cylindrical wall of the cup-shaped housing, on the end face on the outer edge of the flange supports and at a circumferential point that coincides with the hole for the oil supply a longitudinal channel is deformed, which, together with the bore wall of the hollow cylindrical wall, forms a longitudinal channel, in the lower region of which the bore for the oil supply opens, and which is open at its end facing the floor towards the annular oil reservoir.
  • the valve tappet shown in Figure 1 consists of the cup-shaped housing 1, which comprises the hollow cylindrical wall 2, which is closed at its upper end by the bottom 3. Inside the hollow cylindrical wall 2 and concentric to it is arranged the guide sleeve 4, which at its bottom end merges in one piece into the approximately radially directed flange 5, which in turn has a short cylindrical collar 6 axially facing away from the bottom 3 on its radially outer edge, with which it rests in the bore of the hollow cylindrical wall 2.
  • the guide sleeve is fastened in the center of a disk part 7 by a weld 8.
  • the disk part 7 is in turn connected to the hollow cylindrical wall 2 in a liquid-tight manner in that it is supported on the one hand on a shoulder of the wall 2 and on the other hand is held by a bead which is formed from the wall by non-cutting deformation.
  • the hollow cylindrical wall 2, the disk part 7, the guide sleeve 4 and the flange 5 together delimit an annular oil reservoir 9, which is supplied with oil from the lubricating oil circuit of the internal combustion engine through a bore 10.
  • the actual hydraulic lash adjuster 11 is guided in a longitudinally displaceable manner, which is formed from the inner piston 12 and the outer piston 13 spanning these, which are longitudinally displaceably guided and which together limit the oil pressure chamber 14. This is through the bore 16 closed by the check valve 15 with the central oil reservoir 17th connected in the inner piston 12.
  • an inlet opening 18 is provided in the guide sleeve 4, which opens into the channel 19 extending towards the bottom, which is delimited by the lateral surface of the outer bulb 13 on the one hand and the bore of the guide sleeve 4 on the other hand.
  • an oil transfer opening 20 is finally provided in the bottom 3.
  • the flange 5 only has contact with the inner surface of the bottom 3 with its radially outermost region, it is ensured that deflections of the bottom 3 occurring during operation do not affect the flange 5 and thus the guide sleeve 4 and the disk part 7 can impact. This prevents damage to these parts or their mutual connections.
  • FIG. 2 differs from that of Figure 1 only in that the disc part 7 has in its center a short, axially towards the bottom 3 collar 21, which receives the end of the guide sleeve 4 and also here for the liquid-tight connection a weld 8 is provided.
  • the flange 5 runs exclusively radially.
  • the flange 5 is supported on a shoulder 22 of the hollow cylindrical wall 2. In this way it is ensured with certainty that deflections of the base 3 cannot affect the flange.
  • the connection between the guide sleeve 4 on the one hand and the disk part 7 on the other hand takes place in this embodiment by an annular part 23 made of polymeric material, which receives the free ends of the guide sleeve 4 on the one hand and the disk part 7 on the other hand in circumferential grooves and at the same time seals liquid-tight.
  • FIG. 4 shows a variant of the embodiment in accordance with FIG a hollow cylindrical sleeve 24 merges, which rests with its outer jacket in the bore of the hollow cylindrical wall 2 of the cup-shaped housing 1, is supported at the end face on the outer edge of the flange 5 and at a circumferential point, which coincides with the bore 10 for the oil supply, to one Longitudinal channel 25 is deformed, which together with the bore wall 2 forms a longitudinal channel 26, in the lower region of which the bore 10 opens and which at its end facing the bottom 3 is open to the annular oil reservoir 9.
  • This configuration ensures that the annular oil reservoir 9 cannot run empty when the internal combustion engine is at a standstill.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
EP90102264A 1989-03-08 1990-02-06 Sich selbsttätig hydraulisch einstellender Ventilstössel Expired - Lifetime EP0386474B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8902780U 1989-03-08
DE8902780U DE8902780U1 (de) 1989-03-08 1989-03-08 Sich selbsttätig hydraulisch einstellender Ventilstößel

Publications (2)

Publication Number Publication Date
EP0386474A1 EP0386474A1 (de) 1990-09-12
EP0386474B1 true EP0386474B1 (de) 1993-06-09

Family

ID=6836815

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90102264A Expired - Lifetime EP0386474B1 (de) 1989-03-08 1990-02-06 Sich selbsttätig hydraulisch einstellender Ventilstössel

Country Status (5)

Country Link
US (1) US4951619A (ru)
EP (1) EP0386474B1 (ru)
JP (1) JPH02271007A (ru)
DE (2) DE8902780U1 (ru)
ES (1) ES2041055T3 (ru)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8902780U1 (de) * 1989-03-08 1989-04-20 INA Wälzlager Schaeffler KG, 8522 Herzogenaurach Sich selbsttätig hydraulisch einstellender Ventilstößel
US4987672A (en) * 1989-07-28 1991-01-29 Fuji Valve Co., Ltd. Method of partitioning the internal space of a hollow cylindrical member
DE4005261A1 (de) * 1990-02-20 1991-08-22 Bayerische Motoren Werke Ag Tassenstoessel mit einem hydraulischen ventilspiel-ausgleichselement
DE4118776A1 (de) * 1991-06-07 1992-12-10 Schaeffler Waelzlager Kg Mechanischer ventilstoessel fuer eine brennkraftmaschine
DE4124484C1 (ru) * 1991-07-24 1993-01-14 Fa. Carl Freudenberg, 6940 Weinheim, De
US5280771A (en) * 1992-09-23 1994-01-25 Eaton Corporation Direct acting hydraulic tappet
DE4340035B4 (de) * 1992-12-10 2006-02-23 Ina-Schaeffler Kg Mechanischer Tassenstößel
DE4314619A1 (de) * 1993-05-04 1994-11-10 Schaeffler Waelzlager Kg Stößel
DE4325610A1 (de) * 1993-07-30 1995-02-02 Schaeffler Waelzlager Kg Tassenförmiger Ventilstößel
DE4343876A1 (de) * 1993-12-22 1995-06-29 Schaeffler Waelzlager Kg Stößel für den Ventiltrieb einer Brennkraftmaschine
DE19602012A1 (de) * 1996-01-20 1997-07-24 Schaeffler Waelzlager Kg Durch einen Nocken einer Brennkraftmaschine betätigter Ventilstößel
DE19603916A1 (de) * 1996-02-03 1997-08-07 Schaeffler Waelzlager Kg Stößel für den Ventiltrieb einer Brennkraftmaschine
DE19630443A1 (de) * 1996-07-27 1998-01-29 Schaeffler Waelzlager Kg Hydraulisches Spielausgleichselement
DE19724563A1 (de) * 1997-06-11 1998-12-17 Schaeffler Waelzlager Ohg Tassenförmiger Ventilstößel
US6536391B2 (en) * 2000-12-13 2003-03-25 Delphi Technologies, Inc. Compact hydraulic lash adjuster
EP1536106A1 (en) * 2000-12-13 2005-06-01 Delphi Technologies, Inc. Hydraulic lash adjuster
DE102020104313B3 (de) * 2020-02-19 2021-01-28 Schaeffler Technologies AG & Co. KG Stößel zur Beaufschlagung eines Pumpenkolbens einer Kraftstoffhochdruckpumpe

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4590898A (en) * 1979-12-05 1986-05-27 Eaton Corporation Hydraulic tappet for direct-acting valve gear
DE3006644A1 (de) * 1980-02-22 1981-09-03 Motomak Motorenbau, Maschinen- u. Werkzeugfabrik, Konstruktionen GmbH, 8070 Ingolstadt Ventilstoessel fuer brennkraftmaschinen mit obenliegender nockenwelle
JPS60157907U (ja) * 1984-03-28 1985-10-21 アイシン精機株式会社 ダイレクト式油圧リフタ
DE3437478A1 (de) * 1984-10-12 1986-04-17 INA Wälzlager Schaeffler KG, 8522 Herzogenaurach Sich selbsttaetig hydraulisch einstellender ventilstoessel
DE3500425A1 (de) * 1985-01-09 1986-07-10 Motomak Motorenbau, Maschinen- u. Werkzeugfabrik, Konstruktionen GmbH, 8070 Ingolstadt Hydraulischer tassenstoessel fuer verbrennungsmotoren
JPH0746723Y2 (ja) * 1985-06-20 1995-10-25 日産自動車株式会社 油圧バルブリフタ−
DE3542192A1 (de) * 1985-11-29 1987-06-04 Schaeffler Waelzlager Kg Sich selbsttaetig hydraulisch einstellender ventilstoessel
DE3617858A1 (de) * 1986-05-27 1987-12-03 Freudenberg Carl Fa Tassenstoessel
DE3637906A1 (de) * 1986-11-06 1988-05-19 Schaeffler Waelzlager Kg Sich selbsttaetig hydraulisch einstellender ventilstoessel
DE8808711U1 (de) * 1988-03-26 1988-08-25 INA Wälzlager Schaeffler KG, 8522 Herzogenaurach Sich selbsttätig hydraulisch einstellender Ventilstößel
DE3810436A1 (de) * 1988-03-26 1989-10-12 Schaeffler Waelzlager Kg Sich selbsttaetig hydraulisch einstellender ventilstoessel
DE8902780U1 (de) * 1989-03-08 1989-04-20 INA Wälzlager Schaeffler KG, 8522 Herzogenaurach Sich selbsttätig hydraulisch einstellender Ventilstößel

Also Published As

Publication number Publication date
JPH02271007A (ja) 1990-11-06
ES2041055T3 (es) 1993-11-01
EP0386474A1 (de) 1990-09-12
US4951619A (en) 1990-08-28
JPH0573887B2 (ru) 1993-10-15
DE59001639D1 (de) 1993-07-15
DE8902780U1 (de) 1989-04-20

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