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 IT96TO000327A ITTO960327A IT1285853B1 IT 1285853 B1 IT1285853 B1 IT 1285853B1 IT 96TO000327 A IT96TO000327 A IT 96TO000327A 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 operation
operation valves
valves
Prior art date
Application number
IT96TO000327A
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 IT96TO000327A priority Critical patent/IT1285853B1/it
Publication of ITTO960327A0 publication Critical patent/ITTO960327A0/it
Priority to ES97830123T priority patent/ES2154450T3/es
Priority to DE69703511T priority patent/DE69703511T2/de
Priority to EP97830123A priority patent/EP0803642B1/en
Priority to US08/847,361 priority patent/US5839400A/en
Publication of ITTO960327A1 publication Critical patent/ITTO960327A1/it
Application granted granted Critical
Publication of IT1285853B1 publication Critical patent/IT1285853B1/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
    • 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
    • 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
    • F01L13/0005—Deactivating valves
    • 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
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
    • F01L9/11—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column
    • F01L9/12—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column with a liquid chamber between a piston actuated by a cam and a piston acting on a valve stem
    • F01L9/14—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column with a liquid chamber 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D13/0203—Variable control of intake and exhaust valves
    • F02D13/0207—Variable control of intake and exhaust valves changing valve lift or valve lift and timing
    • F02D13/0211—Variable control of intake and exhaust valves changing valve lift or valve lift and timing the change of valve timing is caused by the change in valve lift, i.e. both valve lift and timing are functionally related
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D13/0257—Independent control of two or more intake or exhaust valves respectively, i.e. one of two intake valves remains closed or is opened partially while the other is fully opened
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D13/0273—Multiple actuations of a valve within an engine cycle
    • 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
    • F01L1/34—Valve-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
    • F01L1/344—Valve-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
    • F01L1/3442—Valve-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
    • F01L2001/34423—Details relating to the hydraulic feeding circuit
    • F01L2001/34446—Fluid accumulators for the feeding circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
IT96TO000327A 1996-04-24 1996-04-24 Motore a combustione interna con valvole ad azionamento variabile. IT1285853B1 (it)

Priority Applications (5)

Application Number Priority Date Filing Date Title
IT96TO000327A 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.
DE69703511T DE69703511T2 (de) 1996-04-24 1997-03-19 Brennkraftmaschine mit verstellbarem Ventilantrieb
EP97830123A EP0803642B1 (en) 1996-04-24 1997-03-19 Internal combustion engine with variably actuated valves
US08/847,361 US5839400A (en) 1996-04-24 1997-04-24 Internal combustion engine with variably actuated valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT96TO000327A IT1285853B1 (it) 1996-04-24 1996-04-24 Motore a combustione interna con valvole ad azionamento variabile.

Publications (3)

Publication Number Publication Date
ITTO960327A0 ITTO960327A0 (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
IT96TO000327A 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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EP0803642B1 (en) 2000-11-15
ITTO960327A1 (it) 1997-10-24
EP0803642A1 (en) 1997-10-29
DE69703511D1 (de) 2000-12-21
ITTO960327A0 (it) 1996-04-24
DE69703511T2 (de) 2001-06-28
ES2154450T3 (es) 2001-04-01
US5839400A (en) 1998-11-24

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