US20130000573A1 - Hydraulic valve play compensating element for reciprocating-piston internal combustion engines - Google Patents

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

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Publication number
US20130000573A1
US20130000573A1 US13/583,953 US201113583953A US2013000573A1 US 20130000573 A1 US20130000573 A1 US 20130000573A1 US 201113583953 A US201113583953 A US 201113583953A US 2013000573 A1 US2013000573 A1 US 2013000573A1
Authority
US
United States
Prior art keywords
valve
intake
cylinder
working piston
internal combustion
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.)
Abandoned
Application number
US13/583,953
Other languages
English (en)
Inventor
Peter Sailer
Oliver Schnell
Oliver Witter
Klaus Tietzel
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
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 Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Assigned to Schaeffler Technologies AG & Co. KG reassignment Schaeffler Technologies AG & Co. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WITTER, OLIVER, SAILER, PETER, SCHNELL, OLIVER, TIETZEL, KLAUS
Publication of US20130000573A1 publication Critical patent/US20130000573A1/en
Assigned to Schaeffler Technologies AG & Co. KG reassignment Schaeffler Technologies AG & Co. KG CHANGE OF NAME Assignors: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
Assigned to SCHAEFFLER TECHNOLOGIES GMBH & CO. KG reassignment SCHAEFFLER TECHNOLOGIES GMBH & CO. KG MERGER AND CHANGE OF NAME Assignors: Schaeffler Technologies AG & Co. KG, SCHAEFFLER VERWALTUNGS 5 GMBH
Assigned to Schaeffler Technologies AG & Co. KG reassignment Schaeffler Technologies AG & Co. KG CORRECTIVE ASSIGNMENT TO CORRECT THE PROPERTY NUMBERS PREVIOUSLY RECORDED ON REEL 037732 FRAME 0347. ASSIGNOR(S) HEREBY CONFIRMS THE APP. NO. 14/553248 SHOULD BE APP. NO. 14/553258. Assignors: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
Abandoned 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
    • 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
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers
    • F01L1/181—Centre pivot rocking arms
    • 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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/06—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for braking
    • 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
    • F01L2305/00—Valve arrangements comprising rollers
    • 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
    • F01L2820/00—Details on specific features characterising valve gear arrangements
    • F01L2820/01—Absolute values
    • 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
    • F01L2820/00—Details on specific features characterising valve gear arrangements
    • F01L2820/03—Auxiliary actuators
    • F01L2820/032—Electric motors

Definitions

  • Reciprocating piston internal combustion engines with hydraulic valve lash adjusting elements of the generic type are well known.
  • a problem of such engines is that, depending on the speed of rotation of the reciprocating piston, internal combustion engine and the lift height of the cams, the high pressure chamber of the valve lash adjusting elements is not capable of being sufficiently filled, so that a sinking of the hydraulic valve lash adjusting element can occur and this leads to enhanced or impermissibly large lash in the valve train.
  • the hydraulic valve lash adjusting element gets excessively pumped up, so that valve lash falls short of the permissible value.
  • valve closing body comprises a partial spherical surface in the region of the valve seat and that the ratio of the diameter of the working piston ( 8 ) to twice the radius of the partial spherical surface ( 13 ) is ⁇ 2.
  • valve seat or the valve closing body, possesses a large opening in the region of the valve seat without the overall dimensions of the valve closing body being disproportionately large. This enables an adequate and rapid filling of the high pressure chamber, so that a sinking of the hydraulic valve lash adjusting element is prevented and this, even when additional lobes on the cam shorten the filling time considerably.
  • the valve closing body Adjoining the partial spherical surface, the valve closing body comprises a cylindrical peripheral surface starting from the edge of the spherical surface.
  • the valve closing body has a light weight which, in contrast to usual valve closing bodies configured as balls, manifests a considerably smaller mass although the valve seat has a large diameter.
  • the valve closing body comprises following the cylindrical peripheral surface, a peg and this peg is surrounded by a valve closing spring that is further supported in an opening of a valve cap. In this way, an additional guidance is created for the valve closing body.
  • a bore preferably a stepped bore is arranged adjoining the opening in the valve cap, so that the high pressure chamber can get filled even along the valve closing spring, the peg and the stepped bore.
  • a pocket hole is arranged in the region of the partial spherical surface on the end of the valve closing body turned away from the peg.
  • This pocket bore is a further contribution to a reduction of the mass of the valve closing body and an enlargement of the oil reservoir.
  • the pocket hole also serves as a collecting pocket for contaminants in the oil.
  • the radius of the closing spherical surface is larger than or equal to 2.5 mm.
  • valve seat diameter is larger than or equal to 5.0 mm, and the diameter of the valve closing body is larger than or equal to 7.5 mm. This assures a complete filling of the high pressure chamber even in the presence of intermediate lobes in the region of the base circle of the cams.
  • valve cap is advantageously configured with a stepped inner diameter, and the large diameter surrounds the outer peripheral surface of the valve closing body, while the smaller diameter surrounds the valve closing spring.
  • Beads and openings are arranged on the valve cap in the region of the large diameter and extend from the high pressure chamber to the valve seat in order to assure an adequate and rapid filling of the high pressure chamber.
  • FIG. 1 shows a section through a rocker arm configured as a transmission element comprising a hydraulic valve lash adjusting element that is connected through a roller with a cam of a camshaft, and
  • FIG. 2 shows a section through the hydraulic valve lash adjusting element on an enlarged scale.
  • a rocker arm pivotally mounted on a rocker arm axle 2 is identified at 1 .
  • the rocker arm 1 is operatively connected through a roller 3 to a cam 4 of a reciprocating piston internal combustion engine.
  • the cam is a component part of a camshaft that is designed for use in a reciprocating piston internal combustion engine for a utility vehicle and/or a passenger vehicle.
  • a hydraulic valve lash adjusting element generally identified at 5 that is supplied through a channel with oil from the reciprocating piston internal combustion engine and/or another oil supply unit.
  • the hydraulic valve lash adjusting element 5 comprises a cylindrical housing 7 that is guided for sliding in the rocker arm 1 .
  • a working piston 8 whose outward movement in the cylindrical housing 7 is limited by a spring ring.
  • the working piston 8 is supported, as shown in FIG. 1 , on an end plate 9 that is fixed in the rocker arm 1 .
  • a hollow space configured within the working piston 8 to serve as a reservoir 10 for oil is adjoined by a valve seat 11 to which a valve closing body 12 is associated.
  • the valve closing body 12 comprises a partial spherical surface 13 that merges into a cylindrical peripheral surface 14 .
  • Adjoining the cylindrical peripheral surface 14 is integrally formed on the valve closing body 12 , a peg 15 that is surrounded by a valve closing spring 16 .
  • the valve closing spring 16 is further supported on a valve cap 17 that is firmly installed in the working piston, for example, by pressing.
  • a resetting spring 18 is arranged between the valve cap 17 and the cylindrical housing 7 to bias the working piston away from the cylindrical housing 7 .
  • the space around the resetting spring 18 is configured as a high pressure chamber 19 that is controlled by the valve closing body 12 that prevents a compression of the high pressure chamber.
  • beads 20 and openings 21 that assure a rapid filling of the high pressure chamber 19 out of the reservoir 10 .
  • a pocket hole 22 Through which the mass of the valve closing body is reduced, the reservoir 10 at the same time enlarged and a collecting pocket formed in which contaminants of the oil can get deposited.
  • the ratio of the diameter of the working piston to the diameter of the valve closing body which is normally configured as a ball, is situated above a value of 3 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Valve Device For Special Equipments (AREA)
US13/583,953 2010-04-26 2011-04-13 Hydraulic valve play compensating element for reciprocating-piston internal combustion engines Abandoned US20130000573A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102010018208A DE102010018208A1 (de) 2010-04-26 2010-04-26 Hydraulisches Ventilspiel-Ausgleichselement für Hubkolbenbrennkraftmaschinen
DE102010018208.7 2010-04-26
PCT/EP2011/055753 WO2011134790A2 (de) 2010-04-26 2011-04-13 Hydraulisches ventilspiel-ausgleichselement für hubkolbenbrennkraftmaschinen

Publications (1)

Publication Number Publication Date
US20130000573A1 true US20130000573A1 (en) 2013-01-03

Family

ID=44544232

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/583,953 Abandoned US20130000573A1 (en) 2010-04-26 2011-04-13 Hydraulic valve play compensating element for reciprocating-piston internal combustion engines

Country Status (4)

Country Link
US (1) US20130000573A1 (de)
EP (1) EP2564038B1 (de)
DE (1) DE102010018208A1 (de)
WO (1) WO2011134790A2 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150122220A1 (en) * 2012-07-05 2015-05-07 Eaton Srl Hydraulic lash adjuster
CN106884694A (zh) * 2015-10-22 2017-06-23 舍弗勒技术股份两合公司 用于往复活塞式内燃机的平底或滚轮挺杆
US10119430B2 (en) 2015-06-17 2018-11-06 Schaeffler Technologies AG & Co. KG Transmission element for reciprocating piston internal combustion engines
US10526926B2 (en) 2015-05-18 2020-01-07 Eaton Srl Rocker arm having oil release valve that operates as an accumulator
CN111720184A (zh) * 2020-06-29 2020-09-29 杭州新坐标科技股份有限公司 大型发动机平面液力支撑件
CN114364862A (zh) * 2019-09-20 2022-04-15 卡特彼勒公司 具有液压间隙调节器的摇杆组件

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015216291B3 (de) * 2015-08-26 2016-11-03 Schaeffler Technologies AG & Co. KG Hydraulisches Ausgleichselement eines Ventiltriebs
CN105736086B (zh) * 2016-02-02 2018-06-29 吉林大学 燃烧制动与减压制动结合的发动机制动方法及减压装置

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1916191A (en) * 1931-11-27 1933-07-04 Gen Motors Corp Zero lash valve lifter
US2682864A (en) * 1952-05-08 1954-07-06 Voorhies Carl Valve lifter
USRE24633E (en) * 1959-04-14 Voorhies
US3014472A (en) * 1960-06-13 1961-12-26 Bendix Corp Hydraulic valve tappet
US3124114A (en) * 1964-03-10 Voorhies
US3140698A (en) * 1962-04-13 1964-07-14 Voorhies Carl Hydraulic tappet unit inverted
US4530319A (en) * 1982-07-30 1985-07-23 Honda Giken Kogyo Kabushiki Kaisha Hydraulic lash adjustor in a valve operating mechanism
US6460499B1 (en) * 2001-01-16 2002-10-08 Tecumseh Products Company Hydraulic lifter assembly
US20050229887A1 (en) * 2004-04-16 2005-10-20 Peter Sailer Hydraulic valve-lash-adjusting element
US20070272185A1 (en) * 2006-05-24 2007-11-29 Schaeffler Kg Hydraulic lash adjuster for an internal combustion engine

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2339238A (en) * 1942-03-09 1944-01-18 Buckley Arthur Burton Valve tappet
US4164917A (en) * 1977-08-16 1979-08-21 Cummins Engine Company, Inc. Controllable valve tappet for use with dual ramp cam
US4407241A (en) * 1980-12-31 1983-10-04 Cummins Engine Company, Inc. Expandable hydraulic tappet with a variable exit valve
US4462364A (en) * 1981-09-17 1984-07-31 Aisin Seiki Kabushiki Kaisha Hydraulic lash adjuster
DE4102537A1 (de) * 1991-01-29 1992-07-30 Man Nutzfahrzeuge Ag Auslass-ventilstoessel fuer eine brennkraftmaschine
US5088458A (en) * 1991-02-01 1992-02-18 Siemens Automotive L.P. Lash adjusted for engine valve actuator assembly
DE19818893A1 (de) * 1998-04-28 1999-11-04 Mwp Mahle J Wizemann Pleuco Gm Hydraulisches Ventilspielausgleichselement
DE102004053203A1 (de) * 2004-11-04 2006-06-01 Schaeffler Kg Variabler Ventiltrieb einer Brennkraftmaschine
DE102007014248A1 (de) 2007-03-24 2008-09-25 Schaeffler Kg Hubkolbenbrennkraftmaschine mit Motorbremseinrichtung

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE24633E (en) * 1959-04-14 Voorhies
US3124114A (en) * 1964-03-10 Voorhies
US1916191A (en) * 1931-11-27 1933-07-04 Gen Motors Corp Zero lash valve lifter
US2682864A (en) * 1952-05-08 1954-07-06 Voorhies Carl Valve lifter
US3014472A (en) * 1960-06-13 1961-12-26 Bendix Corp Hydraulic valve tappet
US3140698A (en) * 1962-04-13 1964-07-14 Voorhies Carl Hydraulic tappet unit inverted
US4530319A (en) * 1982-07-30 1985-07-23 Honda Giken Kogyo Kabushiki Kaisha Hydraulic lash adjustor in a valve operating mechanism
US6460499B1 (en) * 2001-01-16 2002-10-08 Tecumseh Products Company Hydraulic lifter assembly
US20050229887A1 (en) * 2004-04-16 2005-10-20 Peter Sailer Hydraulic valve-lash-adjusting element
US7146954B2 (en) * 2004-04-16 2006-12-12 Ina-Schaeffler Kg Hydraulic valve-lash-adjusting element
US20070272185A1 (en) * 2006-05-24 2007-11-29 Schaeffler Kg Hydraulic lash adjuster for an internal combustion engine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150122220A1 (en) * 2012-07-05 2015-05-07 Eaton Srl Hydraulic lash adjuster
US10294828B2 (en) * 2012-07-05 2019-05-21 Eaton Intelligent Power Limited Hydraulic lash adjuster
US10526926B2 (en) 2015-05-18 2020-01-07 Eaton Srl Rocker arm having oil release valve that operates as an accumulator
US10119430B2 (en) 2015-06-17 2018-11-06 Schaeffler Technologies AG & Co. KG Transmission element for reciprocating piston internal combustion engines
CN106884694A (zh) * 2015-10-22 2017-06-23 舍弗勒技术股份两合公司 用于往复活塞式内燃机的平底或滚轮挺杆
CN114364862A (zh) * 2019-09-20 2022-04-15 卡特彼勒公司 具有液压间隙调节器的摇杆组件
CN111720184A (zh) * 2020-06-29 2020-09-29 杭州新坐标科技股份有限公司 大型发动机平面液力支撑件

Also Published As

Publication number Publication date
EP2564038A2 (de) 2013-03-06
DE102010018208A1 (de) 2011-10-27
WO2011134790A3 (de) 2012-03-15
EP2564038B1 (de) 2014-09-17
WO2011134790A2 (de) 2011-11-03

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AS Assignment

Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SAILER, PETER;SCHNELL, OLIVER;WITTER, OLIVER;AND OTHERS;SIGNING DATES FROM 20120803 TO 20120822;REEL/FRAME:028935/0187

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION

AS Assignment

Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, GERMANY

Free format text: CHANGE OF NAME;ASSIGNOR:SCHAEFFLER TECHNOLOGIES GMBH & CO. KG;REEL/FRAME:037732/0347

Effective date: 20150101

Owner name: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, GERMANY

Free format text: MERGER AND CHANGE OF NAME;ASSIGNORS:SCHAEFFLER TECHNOLOGIES AG & CO. KG;SCHAEFFLER VERWALTUNGS 5 GMBH;REEL/FRAME:037732/0228

Effective date: 20131231

AS Assignment

Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, GERMANY

Free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE PROPERTY NUMBERS PREVIOUSLY RECORDED ON REEL 037732 FRAME 0347. ASSIGNOR(S) HEREBY CONFIRMS THE APP. NO. 14/553248 SHOULD BE APP. NO. 14/553258;ASSIGNOR:SCHAEFFLER TECHNOLOGIES GMBH & CO. KG;REEL/FRAME:040404/0530

Effective date: 20150101