IT1285853B1 - Motore a combustione interna con valvole ad azionamento variabile. - Google Patents

Motore a combustione interna con valvole ad azionamento variabile.

Info

Publication number
IT1285853B1
IT1285853B1 ITTO960327A IT1285853B1 IT 1285853 B1 IT1285853 B1 IT 1285853B1 IT TO960327 A ITTO960327 A IT TO960327A IT 1285853 B1 IT1285853 B1 IT 1285853B1
Authority
IT
Italy
Prior art keywords
combustion engine
internal combustion
variable actuation
actuation valves
valves
Prior art date
Application number
Other languages
English (en)
Inventor
Francesco Vattaneo
Marco Consani
Lorentino Macor
Original Assignee
Fiat Ricerche
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 Ricerche filed Critical Fiat Ricerche
Priority to ITTO960327 priority Critical patent/IT1285853B1/it
Publication of ITTO960327D0 publication Critical patent/ITTO960327D0/it
Publication of ITTO960327A1 publication Critical patent/ITTO960327A1/it
Application granted granted Critical
Publication of IT1285853B1 publication Critical patent/IT1285853B1/it

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/26Valve-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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0005Deactivating valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L9/00Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/02Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
    • F01L9/021Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic the action of a cam being transmitted to a valve by a fluid column, e.g. a fluid conduit
    • F01L9/023Hydraulic lifters, i.e. fluid chamber comprised between a piston actuated by a cam and a piston acting on a valve stem
    • F01L9/025Hydraulic lifters, i.e. fluid chamber comprised between a piston actuated by a cam and a piston acting on a valve stem the volume of the chamber being variable, e.g. for varying the lift or the timing of a valve
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • F01L2001/34423Details relating to the hydraulic feeding circuit
    • F01L2001/34446Fluid accumulators for the feeding circuit
ITTO960327 1996-04-24 1996-04-24 Motore a combustione interna con valvole ad azionamento variabile. IT1285853B1 (it)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ITTO960327 IT1285853B1 (it) 1996-04-24 1996-04-24 Motore a combustione interna con valvole ad azionamento variabile.

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
ITTO960327 IT1285853B1 (it) 1996-04-24 1996-04-24 Motore a combustione interna con valvole ad azionamento variabile.
ES97830123T ES2154450T3 (es) 1996-04-24 1997-03-19 Motor de combustion interna con valvulas de gobierno variable.
EP19970830123 EP0803642B1 (en) 1996-04-24 1997-03-19 Internal combustion engine with variably actuated valves
DE1997603511 DE69703511T2 (de) 1996-04-24 1997-03-19 Brennkraftmaschine mit verstellbarem Ventilantrieb
US08/847,361 US5839400A (en) 1996-04-24 1997-04-24 Internal combustion engine with variably actuated valves

Publications (3)

Publication Number Publication Date
ITTO960327D0 ITTO960327D0 (it) 1996-04-24
ITTO960327A1 ITTO960327A1 (it) 1997-10-24
IT1285853B1 true IT1285853B1 (it) 1998-06-24

Family

ID=11414578

Family Applications (1)

Application Number Title Priority Date Filing Date
ITTO960327 IT1285853B1 (it) 1996-04-24 1996-04-24 Motore a combustione interna con valvole ad azionamento variabile.

Country Status (5)

Country Link
US (1) US5839400A (it)
EP (1) EP0803642B1 (it)
DE (1) DE69703511T2 (it)
ES (1) ES2154450T3 (it)
IT (1) IT1285853B1 (it)

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US6951211B2 (en) 1996-07-17 2005-10-04 Bryant Clyde C Cold air super-charged internal combustion engine, working cycle and method
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JP3887086B2 (ja) * 1997-11-19 2007-02-28 ヤマハ発動機株式会社 内燃機関の燃料系搭載構造
US8820276B2 (en) 1997-12-11 2014-09-02 Jacobs Vehicle Systems, Inc. Variable lost motion valve actuator and method
ITTO980060A1 (it) * 1998-01-23 1999-07-23 Fiat Ricerche Perfezionamenti ai motori a combustione intenra con valvole ad azionam ento variabile.
IT1302071B1 (it) * 1998-02-26 2000-07-20 Fiat Ricerche Motore a combustione interna con valvole ad azionamento variabile.
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US6308681B1 (en) 1999-12-29 2001-10-30 Hector A. Gubler Valve-arrangement for controlling gas in a piston-type internal-combustion engine
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US6321706B1 (en) * 2000-08-10 2001-11-27 Borgwarner Inc. Variable valve opening duration system
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ITTO20010272A1 (it) * 2001-03-23 2002-09-23 Fiat Ricerche Motore a combustione interna con valvole ad azionamento variabile e punteria idraulica ausiliaria.
ITTO20010273A1 (it) 2001-03-23 2002-09-23 Fiat Ricerche Motore a combustione interna con sistema idraulico per l'azionamento variabile delle valvole e con mezzi di spurgo dell'aria dal sistema idr
ITTO20010270A1 (it) 2001-03-23 2002-09-23 Fiat Ricerche Motore a combustione interna con sistema idraulico di azionamento variabile delle valvole e punteria a doppio stantuffo.
ITTO20010271A1 (it) 2001-03-23 2002-09-23 Fiat Ricerche Perfezionamenti ai motori a combustione interna con sistema idraulicoper l'azionamento variabile delle valvole del motore.
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US7080614B2 (en) 2002-05-31 2006-07-25 Ina-Schaeffler Kg Hydraulically actuated, variable valve drive of an internal combustion engine
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EP2801706B1 (en) 2013-05-09 2016-06-15 C.R.F. Società Consortile per Azioni Internal combustion engine, with a system for variable actuation of the intake valves provided with a three-way electric valve having three levels of supplying current, and method for controlling this engine
EP2803828B1 (en) 2013-05-17 2015-08-19 C.R.F. Società Consortile per Azioni A spark ignition internal combustion engine having intake valves with variable actuation and delayed closure
EP2832960B1 (en) 2013-08-01 2015-09-16 C.R.F. Società Consortile per Azioni Internal combustion engine having a system for variable actuation of the intake valves, provided with an electrically actuated control valve having two ways and three positions
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EP3156619B1 (en) 2015-10-13 2018-06-06 C.R.F. Società Consortile per Azioni System and method for variable actuation of a valve of an internal combustion engine, with a device for dampening pressure oscillations
EP3181842B1 (en) 2015-12-17 2019-06-19 C.R.F. Società Consortile per Azioni System and method for variable actuation of a valve of an internal combustion engine, with an electrically operated control valve having an improved control
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EP3489475B1 (en) 2017-11-27 2020-02-12 C.R.F. Società Consortile per Azioni System and method for actuation of an engine valve of an internal combustion engine

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Also Published As

Publication number Publication date
DE69703511D1 (de) 2000-12-21
EP0803642A1 (en) 1997-10-29
EP0803642B1 (en) 2000-11-15
ITTO960327A1 (it) 1997-10-24
DE69703511T2 (de) 2001-06-28
US5839400A (en) 1998-11-24
ITTO960327D0 (it) 1996-04-24
ES2154450T3 (es) 2001-04-01

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