IT1253875B - Dispositivo a camme aventi profilo deformabile e/o spostabile, tramite fluido in pressione, per variare la fasatura di valvole di motori - Google Patents

Dispositivo a camme aventi profilo deformabile e/o spostabile, tramite fluido in pressione, per variare la fasatura di valvole di motori

Info

Publication number
IT1253875B
IT1253875B ITRM910572A ITRM910572A IT1253875B IT 1253875 B IT1253875 B IT 1253875B IT RM910572 A ITRM910572 A IT RM910572A IT RM910572 A ITRM910572 A IT RM910572A IT 1253875 B IT1253875 B IT 1253875B
Authority
IT
Italy
Prior art keywords
deformable
motors
vary
pressure fluid
valve timing
Prior art date
Application number
ITRM910572A
Other languages
English (en)
Inventor
Francesco Giulio Di
Anna Gigantino
Original Assignee
Francesco Giulio Di
Anna Gigantino
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 Francesco Giulio Di, Anna Gigantino filed Critical Francesco Giulio Di
Priority to ITRM910572A priority Critical patent/IT1253875B/it
Publication of ITRM910572A0 publication Critical patent/ITRM910572A0/it
Priority to PCT/IT1992/000054 priority patent/WO1993003261A1/en
Publication of ITRM910572A1 publication Critical patent/ITRM910572A1/it
Application granted granted Critical
Publication of IT1253875B publication Critical patent/IT1253875B/it

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
    • F01L13/0057—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 splittable or deformable cams
    • 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
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/08—Shape of cams
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H53/00—Cams or cam-followers, e.g. rollers for gearing mechanisms
    • F16H53/02—Single-track cams for single-revolution cycles; Camshafts with such cams
    • F16H53/04—Adjustable cams

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

Il dispositivo comprende un tipo di camma a profilo deformabile e/o spostabile, tramite fluido in pressione, che consente una variazione in antivipo o in ritardo dell'apertura e/o della chiusura di ognuna delle valvole di un motore a combustione interna o non.Il funzionamento del dispositivo è fondato sugli effetti che un fluido in pressione, agente all'interno di una camma, realizzata sulla struttura di una camma nel suo insieme o su elementi elastici posti in coazione con essa.
ITRM910572A 1991-07-31 1991-07-31 Dispositivo a camme aventi profilo deformabile e/o spostabile, tramite fluido in pressione, per variare la fasatura di valvole di motori IT1253875B (it)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ITRM910572A IT1253875B (it) 1991-07-31 1991-07-31 Dispositivo a camme aventi profilo deformabile e/o spostabile, tramite fluido in pressione, per variare la fasatura di valvole di motori
PCT/IT1992/000054 WO1993003261A1 (en) 1991-07-31 1992-05-21 A cam device with a shape being deformable and/or removable by means of a fluid under pressure for varying the phasing of engine valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITRM910572A IT1253875B (it) 1991-07-31 1991-07-31 Dispositivo a camme aventi profilo deformabile e/o spostabile, tramite fluido in pressione, per variare la fasatura di valvole di motori

Publications (3)

Publication Number Publication Date
ITRM910572A0 ITRM910572A0 (it) 1991-07-31
ITRM910572A1 ITRM910572A1 (it) 1993-01-31
IT1253875B true IT1253875B (it) 1995-08-31

Family

ID=11400294

Family Applications (1)

Application Number Title Priority Date Filing Date
ITRM910572A IT1253875B (it) 1991-07-31 1991-07-31 Dispositivo a camme aventi profilo deformabile e/o spostabile, tramite fluido in pressione, per variare la fasatura di valvole di motori

Country Status (2)

Country Link
IT (1) IT1253875B (it)
WO (1) WO1993003261A1 (it)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1256558B (it) * 1992-12-18 1995-12-07 Francesco Giulio Di Dispositivo a camme, per variare la fasatura di valvole di motori, utilizzante fluido incomprimibile come elemento strutturale per realizzare la deformazione e/o lo spostamento del profilo delle camme
GR1001530B (el) * 1993-03-29 1994-03-31 Christos Valasopoulos Μεταβλητό έκκεντρο εκκεντροφόρων αξόνων εμβολοφόρων μηχανών εσωτερικής καύσεως.
JPH08506879A (ja) * 1993-12-17 1996-07-23 バラソポウロス，クリストス 対称軸線から偏倚した点の周りにおける特殊な形のカムローブの角運動装置
DE102010008983A1 (de) * 2010-02-24 2011-08-25 Neumayer Tekfor Holding GmbH, 77756 Nocken und Nockenwelle

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3144009A (en) * 1962-05-14 1964-08-11 Dick Schoep Variable valve timing mechanism
JPS5954713A (ja) * 1982-09-21 1984-03-29 Fuji Heavy Ind Ltd 可変バルブタイミング装置
DE3720947A1 (de) * 1986-07-03 1988-01-07 Volkswagen Ag Nockenwellenanordnung
DE3705128A1 (de) * 1987-02-18 1988-09-01 Opel Adam Ag Fuer eine brennkraftmaschine bestimmte nockenwelle
JPH01178710A (ja) * 1988-01-06 1989-07-14 Mazda Motor Corp エンジンのバルブ駆動装置

Also Published As

Publication number Publication date
ITRM910572A1 (it) 1993-01-31
WO1993003261A1 (en) 1993-02-18
ITRM910572A0 (it) 1991-07-31

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Legal Events

Date Code Title Description
0001 Granted