EP0995885A3 - Rocker arm device for simultaneous control of valve lift and relative timing in a combustion engine - Google Patents

Rocker arm device for simultaneous control of valve lift and relative timing in a combustion engine Download PDF

Info

Publication number
EP0995885A3
EP0995885A3 EP99308287A EP99308287A EP0995885A3 EP 0995885 A3 EP0995885 A3 EP 0995885A3 EP 99308287 A EP99308287 A EP 99308287A EP 99308287 A EP99308287 A EP 99308287A EP 0995885 A3 EP0995885 A3 EP 0995885A3
Authority
EP
European Patent Office
Prior art keywords
rocker arm
lift cam
rocker
combustion engine
valve lift
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.)
Granted
Application number
EP99308287A
Other languages
German (de)
French (fr)
Other versions
EP0995885B1 (en
EP0995885A2 (en
Inventor
Majo Cecur
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.)
Eaton Corp
Original Assignee
Eaton Corp
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 Eaton Corp filed Critical Eaton Corp
Publication of EP0995885A2 publication Critical patent/EP0995885A2/en
Publication of EP0995885A3 publication Critical patent/EP0995885A3/en
Application granted granted Critical
Publication of EP0995885B1 publication Critical patent/EP0995885B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers
    • F01L1/185—Overhead end-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
    • F01L1/2405—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
    • 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
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
    • 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
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0063—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of cam contact point by displacing an intermediate lever or wedge-shaped intermediate element, e.g. Tourtelot
    • 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
    • F01L2001/186—Split rocking arms, e.g. rocker arms having two articulated parts and means for varying the relative position of these parts or for selectively connecting the parts to move in unison
    • 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
    • F01L2305/02—Mounting of 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
    • F01L2820/03—Auxiliary actuators
    • F01L2820/033—Hydraulic engines

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

A valve control system including a valve actuating camshaft (A), having a high lift cam (B) and a low lift cam (C), and an outer rocker arm (2) engaging the high lift cam, and an inner rocker arm (3) engaging the low lift cam. The ends of the rocker arms adjacent the engine poppet valve (V) are fixed to each other by a connector pin (37). The system includes a latching mechanism disposed at the ends of the rocker arms opposite the connector pin (37). Latching of the rocker arms is accomplished by a compound pin (8) moved between latched (FIG. 14A) and unlatched (FIG. 14B) conditions in response to movement of an actuator (9). The system also includes a rocker ratio varying device, such that, during operation in the low lift mode, the lift can be gradually increased as the engine speed increases.
EP99308287A 1998-10-20 1999-10-20 Rocker arm device for simultaneous control of valve lift and relative timing in a combustion engine Expired - Lifetime EP0995885B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1998MI002244A IT1302701B1 (en) 1998-10-20 1998-10-20 ROCKER DEVICE FOR CONTEMPORARY CONTROL OF THE LIFT OF THE VALVES AND THE RELATIVE TIMING IN A COMBUSTION ENGINE.
ITMI982244 1998-10-20

Publications (3)

Publication Number Publication Date
EP0995885A2 EP0995885A2 (en) 2000-04-26
EP0995885A3 true EP0995885A3 (en) 2000-07-19
EP0995885B1 EP0995885B1 (en) 2005-01-12

Family

ID=11380897

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99308287A Expired - Lifetime EP0995885B1 (en) 1998-10-20 1999-10-20 Rocker arm device for simultaneous control of valve lift and relative timing in a combustion engine

Country Status (5)

Country Link
EP (1) EP0995885B1 (en)
JP (1) JP4541471B2 (en)
BR (1) BR9906075A (en)
DE (1) DE69923139T2 (en)
IT (1) IT1302701B1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10060890C2 (en) * 2000-12-07 2003-04-03 Meta Motoren Energietech Device for switching the operation of a charge exchange valve of an internal combustion engine
JP4057855B2 (en) 2002-07-05 2008-03-05 本田技研工業株式会社 Valve operating device for internal combustion engine
US7779797B2 (en) 2005-09-08 2010-08-24 Honda Motor Co., Ltd. Engine valve operating system
DE102008008094B3 (en) 2008-02-08 2009-05-14 Meta Motoren- Und Energie-Technik Gmbh Valve lever assembly for piston combustion engines for changing valve timing of intake valve, has adjustable valve operating unit for working with cam shaft having two cams, and eccentric opening is provided
EP3411568B1 (en) * 2016-02-01 2020-10-21 Eaton Intelligent Power Limited Variable rocker ratio system for a switchable rocker arm
DE102016210463A1 (en) * 2016-06-14 2017-12-14 Thyssenkrupp Ag Valve control device for an internal combustion engine
DE102017101792B4 (en) 2017-01-31 2018-11-15 Schaeffler Technologies AG & Co. KG Variable valve train of a combustion piston engine
GB201710964D0 (en) * 2017-07-07 2017-08-23 Eaton Srl Actuator
US11566544B2 (en) 2018-08-09 2023-01-31 Eaton Intelligent Power Limited Rocker arm assembly with lost motion spring
WO2020030298A1 (en) * 2018-08-09 2020-02-13 Eaton Intelligent Power Limited Deactivating rocker arm having two-stage latch pin
DE102018131601A1 (en) * 2018-12-10 2019-10-31 Schaeffler Technologies AG & Co. KG Switchable drag lever for a valve train of an internal combustion engine and variable valve train for an internal combustion engine
CN116163818B (en) * 2023-04-24 2023-06-27 泰州市姜堰伟达机械有限公司 Rocker arm device of internal combustion engine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4768475A (en) * 1986-02-28 1988-09-06 Fuji Jukogyo Kabushiki Kaisha Valve mechanism for an automotive engine
US4768467A (en) * 1986-01-23 1988-09-06 Fuji Jukogyo Kabushiki Kaisha Valve operating system for an automotive engine
DE4136143A1 (en) * 1991-11-02 1993-05-06 Audi Ag, 8070 Ingolstadt, De Valve control mechanism for IC engine - has combination of two rocker arms which can be positively joined by locking lever
DE4220816A1 (en) * 1992-06-25 1994-01-05 Schaeffler Waelzlager Kg Adjustable valve control for IC engine - has adjustable intermediate member between cam and pivot lever along guide path
US5655488A (en) * 1996-07-22 1997-08-12 Eaton Corporation Dual event valve control system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60228717A (en) * 1984-04-27 1985-11-14 Suzuki Motor Co Ltd Variable device of valve lift in four-cycle engine
JPS62170714A (en) * 1986-01-23 1987-07-27 Fuji Heavy Ind Ltd Valve moving device for automobile engine
JPS62170711A (en) * 1986-01-23 1987-07-27 Fuji Heavy Ind Ltd Valve moving device for automobile engine
IT1240107B (en) * 1990-02-16 1993-11-27 Ferrari Spa VARIABLE DISTRIBUTION SYSTEM, IN PARTICULAR FOR AN ENDOTHERMAL ENGINE.
JPH0626313A (en) * 1992-06-02 1994-02-01 Yoshiteru Ono Variable valve timing mechanism

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4768467A (en) * 1986-01-23 1988-09-06 Fuji Jukogyo Kabushiki Kaisha Valve operating system for an automotive engine
US4768475A (en) * 1986-02-28 1988-09-06 Fuji Jukogyo Kabushiki Kaisha Valve mechanism for an automotive engine
DE4136143A1 (en) * 1991-11-02 1993-05-06 Audi Ag, 8070 Ingolstadt, De Valve control mechanism for IC engine - has combination of two rocker arms which can be positively joined by locking lever
DE4220816A1 (en) * 1992-06-25 1994-01-05 Schaeffler Waelzlager Kg Adjustable valve control for IC engine - has adjustable intermediate member between cam and pivot lever along guide path
US5655488A (en) * 1996-07-22 1997-08-12 Eaton Corporation Dual event valve control system

Also Published As

Publication number Publication date
DE69923139D1 (en) 2005-02-17
DE69923139T2 (en) 2005-12-29
JP4541471B2 (en) 2010-09-08
ITMI982244A1 (en) 2000-04-20
EP0995885B1 (en) 2005-01-12
EP0995885A2 (en) 2000-04-26
BR9906075A (en) 2000-09-05
ITMI982244A0 (en) 1998-10-20
IT1302701B1 (en) 2000-09-29
JP2000130132A (en) 2000-05-09

Similar Documents

Publication Publication Date Title
EP0213759B1 (en) Valve operating mechanism
EP0276533B1 (en) Valve operating mechanism for internal combustion engine
CA1329077C (en) Valve operating mechanism in an internal combustion engine
EP3464837B1 (en) Actuation apparatus
US20080127917A1 (en) Mode-Switching Cam Follower
EP0995885A3 (en) Rocker arm device for simultaneous control of valve lift and relative timing in a combustion engine
EP1169558A1 (en) Exhaust and intake rocker arm assemblies for modifying valve lift and timing during positive power
EP1533486B1 (en) Valve-actuating device for internal combustion engine
CA2165987A1 (en) Valve mechanism for an internal combustion engine
EP1111205A3 (en) Valve drive device of an internal combustion engine
WO2017060496A1 (en) Rocker arm assembly for an internal combustion engine
EP1026370A3 (en) Variable-valve-actuation apparatus for internal combustion engine
JPH0258445B2 (en)
EP0276532B1 (en) Valve operating mechanism for internal combustion engine
EP1273771A4 (en) Valve gear of internal combustion engine
SE0001227D0 (en) Rocker arm assembly for engines
JP2000130132A5 (en)
EP1264967A3 (en) Mechanical lash adjuster apparatus for an engine cam
EP0967367A3 (en) Valve drive system for an internal combustion engine
JPS61185606A (en) Valve timing varying device for four-cycle engine
EP1247945A3 (en) Internal combustion engine
EP0324092A1 (en) Valve actuation device for multi-valve-type engine
JPH0243004B2 (en)
EP0125096A3 (en) Mechanism for variably controlling an internal combustion engine valve
JPH0629524B2 (en) Valve timing switching device for internal combustion engine

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: A2

Designated state(s): DE FR GB IT

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20010109

AKX Designation fees paid

Free format text: DE FR GB IT

17Q First examination report despatched

Effective date: 20031010

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 69923139

Country of ref document: DE

Date of ref document: 20050217

Kind code of ref document: P

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

ET Fr: translation filed
26N No opposition filed

Effective date: 20051013

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20150924

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20150924

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20151030

Year of fee payment: 17

Ref country code: IT

Payment date: 20151016

Year of fee payment: 17

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69923139

Country of ref document: DE

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20161020

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20170630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161102

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170503

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161020

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161020