IT1270443B - Comando di distribuzione a geometria variabile per un motore a combustione interna. - Google Patents

Comando di distribuzione a geometria variabile per un motore a combustione interna.

Info

Publication number
IT1270443B
IT1270443B ITTO930079A ITTO930079A IT1270443B IT 1270443 B IT1270443 B IT 1270443B IT TO930079 A ITTO930079 A IT TO930079A IT TO930079 A ITTO930079 A IT TO930079A IT 1270443 B IT1270443 B IT 1270443B
Authority
IT
Italy
Prior art keywords
combustion engine
internal combustion
distribution control
variable geometry
geometry distribution
Prior art date
Application number
ITTO930079A
Other languages
English (en)
Inventor
Giorgio Roffina
Franco Battistino
Original Assignee
Fiat Auto Spa
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 Fiat Auto Spa filed Critical Fiat Auto Spa
Priority to ITTO930079A priority Critical patent/IT1270443B/it
Publication of ITTO930079A0 publication Critical patent/ITTO930079A0/it
Priority to EP93119186A priority patent/EP0615057B1/en
Priority to DE69304302T priority patent/DE69304302T2/de
Publication of ITTO930079A1 publication Critical patent/ITTO930079A1/it
Application granted granted Critical
Publication of IT1270443B publication Critical patent/IT1270443B/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
    • F01L13/0036—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
    • F01L13/0042—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 with cams being 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
    • 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
    • F01L1/26—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/18—DOHC [Double overhead camshaft]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
    • F02F1/4214—Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F2001/244—Arrangement of valve stems in cylinder heads
    • F02F2001/245—Arrangement of valve stems in cylinder heads the valve stems being orientated at an angle with the cylinder axis

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

Comando di valvole di distribuzione di un motore a combustione interna, provvisto di un albero a camme a profilo variabile, spostabile secondo il suo asse longitudinale, e di valvole comandate tramite un bilanciere comprendente un pattino a contatto con la superficie della camma connesso, in modo da poter ruotare, con un alberino inserito in sedi ricavate sulla testata.
ITTO930079A 1993-02-10 1993-02-10 Comando di distribuzione a geometria variabile per un motore a combustione interna. IT1270443B (it)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ITTO930079A IT1270443B (it) 1993-02-10 1993-02-10 Comando di distribuzione a geometria variabile per un motore a combustione interna.
EP93119186A EP0615057B1 (en) 1993-02-10 1993-11-29 Variable geometry distribution control for an internal combustion engine
DE69304302T DE69304302T2 (de) 1993-02-10 1993-11-29 Ventilsteuerungseinrichtung mit variabler Geometrie für eine Brennkraftmaschine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO930079A IT1270443B (it) 1993-02-10 1993-02-10 Comando di distribuzione a geometria variabile per un motore a combustione interna.

Publications (3)

Publication Number Publication Date
ITTO930079A0 ITTO930079A0 (it) 1993-02-10
ITTO930079A1 ITTO930079A1 (it) 1994-08-10
IT1270443B true IT1270443B (it) 1997-05-05

Family

ID=11411099

Family Applications (1)

Application Number Title Priority Date Filing Date
ITTO930079A IT1270443B (it) 1993-02-10 1993-02-10 Comando di distribuzione a geometria variabile per un motore a combustione interna.

Country Status (3)

Country Link
EP (1) EP0615057B1 (it)
DE (1) DE69304302T2 (it)
IT (1) IT1270443B (it)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5988128A (en) * 1997-03-27 1999-11-23 Toyota Jidosha Kabushiki Kaisha Valve driving apparatus for engine
DE102006047293A1 (de) * 2006-10-06 2008-04-10 Schaeffler Kg Ventiltrieb für eine Brennkraftmaschine mit verschiebbaren Raumnocken

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1586933A (it) * 1968-09-25 1970-03-06
JPS59103907A (ja) * 1982-12-07 1984-06-15 Honda Motor Co Ltd 内燃機関の動弁装置
IT1195192B (it) * 1986-10-07 1988-10-12 Fiat Auto Spa Comando valvole per motori ad alberi a camme in testa
DE3708675A1 (de) * 1987-03-17 1988-09-29 Bayerische Motoren Werke Ag Ventilbetaetigungsanordnung fuer brennkraftmaschinen mit mehreren gleichartigen ventilen fuer jeden zylinder
DE4117566A1 (de) * 1991-05-29 1992-12-03 Audi Ag Ventilsteuerung fuer eine brennkraftmaschine
IT1257540B (it) * 1992-05-22 1996-01-30 Ferrari Spa Sistema di comando di valvole per un motore endotermico a fasatura variabile, in particolare un motore con piu' valvole per cilindro.

Also Published As

Publication number Publication date
ITTO930079A0 (it) 1993-02-10
EP0615057B1 (en) 1996-08-28
ITTO930079A1 (it) 1994-08-10
EP0615057A1 (en) 1994-09-14
DE69304302T2 (de) 1997-01-02
DE69304302D1 (de) 1996-10-02

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19990225