EP1484479A3 - Variable-lift timing system for an internal combustion engine - Google Patents

Variable-lift timing system for an internal combustion engine Download PDF

Info

Publication number
EP1484479A3
EP1484479A3 EP04102518A EP04102518A EP1484479A3 EP 1484479 A3 EP1484479 A3 EP 1484479A3 EP 04102518 A EP04102518 A EP 04102518A EP 04102518 A EP04102518 A EP 04102518A EP 1484479 A3 EP1484479 A3 EP 1484479A3
Authority
EP
European Patent Office
Prior art keywords
variable
combustion engine
internal combustion
timing system
valve
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Withdrawn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
EP04102518A
Other languages
German (de)
French (fr)
Other versions
EP1484479A2 (en
Inventor
Ennio Ascari
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.)
Hpe High Performance Engineering Srl
Original Assignee
Hpe High Performance Engineering Srl
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 Hpe High Performance Engineering Srl filed Critical Hpe High Performance Engineering Srl
Publication of EP1484479A2 publication Critical patent/EP1484479A2/en
Publication of EP1484479A3 publication Critical patent/EP1484479A3/en
Withdrawn legal-status Critical Current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
    • 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
    • F01L13/0021—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 rocker arm ratio
    • F01L13/0026—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 rocker arm ratio by means of an eccentric
    • 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
    • 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
    • F01L13/0021—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 rocker arm ratio
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

A variable-lift timing system (10) for an internal combustion engine. The system (10) includes an actuating mechanism (12) for moving a valve (11). An intermediate assembly (15) is interposed between the valve (11) and the actuating mechanism (12), and includes a first contoured member (15a), a contoured surface (18) of which contacts the rod (11a) of the valve (11), and a second contoured member (15b), a contoured surface (22) of which contacts a cam (14) rotated by the actuating mechanism (12). A roller (20) is interposed between the first contoured member (15a) and the second contoured member (15b), and the spatial position of the roller is regulated by an actuating device (23, 25) to determine the law of movement of the valve (11).
EP04102518A 2003-06-06 2004-06-04 Variable-lift timing system for an internal combustion engine Withdrawn EP1484479A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO20030347 2003-06-06
ITBO20030347 ITBO20030347A1 (en) 2003-06-06 2003-06-06 VARIABLE LIFT DISTRIBUTION SYSTEM FOR AN ENDOTHERMAL MOTOR.

Publications (2)

Publication Number Publication Date
EP1484479A2 EP1484479A2 (en) 2004-12-08
EP1484479A3 true EP1484479A3 (en) 2005-08-24

Family

ID=33156326

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04102518A Withdrawn EP1484479A3 (en) 2003-06-06 2004-06-04 Variable-lift timing system for an internal combustion engine

Country Status (2)

Country Link
EP (1) EP1484479A3 (en)
IT (1) ITBO20030347A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20050326A1 (en) 2005-05-12 2006-11-13 Luigi Conti INTERNAL COMBUSTION ENGINE WITH VARIABLE LIFTED VALVES

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE370440A (en) *
FR2472078A1 (en) * 1979-12-21 1981-06-26 Baguena Michel Four stroke engine valve drive - has roller controlling valve timing reciprocated between concave surface and shaped cam face
JPS60228717A (en) * 1984-04-27 1985-11-14 Suzuki Motor Co Ltd Variable device of valve lift in four-cycle engine
US5189998A (en) * 1991-07-23 1993-03-02 Atsugi Unisia Corporation Valve mechanism of internal combustion engine
DE10117584A1 (en) * 2001-04-07 2002-10-10 Willi Roth Device for lift adjustment of gas exchange valves has slide piece on trailing lever between valve and cam follower, whereby in no-lift position slide piece lies directly in middle of bearing point of cam follower
WO2003008772A1 (en) * 2001-07-17 2003-01-30 Thyssenkrupp Automotive Ag Variable valve-stroke controller

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10106921A1 (en) 2001-02-15 2002-08-22 Bayerische Motoren Werke Ag Method for synchronizing the filling of cylinders of an internal combustion engine, in particular a reciprocating piston internal combustion engine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE370440A (en) *
FR2472078A1 (en) * 1979-12-21 1981-06-26 Baguena Michel Four stroke engine valve drive - has roller controlling valve timing reciprocated between concave surface and shaped cam face
JPS60228717A (en) * 1984-04-27 1985-11-14 Suzuki Motor Co Ltd Variable device of valve lift in four-cycle engine
US5189998A (en) * 1991-07-23 1993-03-02 Atsugi Unisia Corporation Valve mechanism of internal combustion engine
DE10117584A1 (en) * 2001-04-07 2002-10-10 Willi Roth Device for lift adjustment of gas exchange valves has slide piece on trailing lever between valve and cam follower, whereby in no-lift position slide piece lies directly in middle of bearing point of cam follower
WO2003008772A1 (en) * 2001-07-17 2003-01-30 Thyssenkrupp Automotive Ag Variable valve-stroke controller

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 010, no. 092 (M - 468) 9 April 1986 (1986-04-09) *

Also Published As

Publication number Publication date
EP1484479A2 (en) 2004-12-08
ITBO20030347A1 (en) 2004-12-07

Similar Documents

Publication Publication Date Title
US10077686B2 (en) Pushrod assembly
PL1526257T3 (en) Exhaust braking device for a 4-stroke internal piston combustion engine
EP1577509A3 (en) Electromechanically actuated valve control based on a vehicle electrical system
WO2005106215A3 (en) Valve actuation system with valve seating control
ATE421035T1 (en) EXHAUST VALVE MECHANISM FOR COMBUSTION ENGINE
AU2003237968A1 (en) A stroke adjusting device for valves of a combustion engine
EP1273777A3 (en) Apparatus and method for two-step intake phased engine control system
WO2006090292A3 (en) Rocker arm arrangement for dual valve timing with single cam lobe
EP1079078A3 (en) Variable valve apparatus of internal combustion engine and method of varying the open-close characteristic of an engine valve
ATE509190T1 (en) DEVICE FOR AN COMBUSTION ENGINE
EP1403471A3 (en) Variable valve timing system for an internal combustion engine
AU2003900003A0 (en) Piston De-activation Mechanism for Internal Combustion Engines
EP1264967A3 (en) Mechanical lash adjuster apparatus for an engine cam
WO2008143658A3 (en) Finger follower lost motion valve actuation system with locating link
DE602006012654D1 (en) COMBUSTION ENGINE WITH STEP-UP ADJUSTABLE VALVE HOLDING SYSTEM
EP1484479A3 (en) Variable-lift timing system for an internal combustion engine
EP1335115A3 (en) Internal combustion engine provided with decompressing means
EP1798386A3 (en) Valve-operating mechanism
EP1243762A3 (en) Internal-combustion engine with hydraulic system for variable operation of the engine valves
EP1270882A3 (en) Four-stroke internal combustion engine with valve resting mechanism
ATE428045T1 (en) ADJUSTABLE VALVE CONTROL
WO2004033942A3 (en) Maintaining controlled orientation of a roller lifter follower used in conjunction with a variable phased valve lifter
AU2003249101A1 (en) A mechanism for varynig the valve stroke of an internal combustion piston engine
DE60336065D1 (en) NOCKENST SSELARM FOR A COMBUSTION ENGINE
JP2004084630A (en) Valve mechanism

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): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL HR LT LV MK

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 BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL HR LT LV MK

17P Request for examination filed

Effective date: 20060223

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

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: 20061121