IT1302071B1 - Motore a combustione interna con valvole ad azionamento variabile. - Google Patents
Motore a combustione interna con valvole ad azionamento variabile.Info
- Publication number
- IT1302071B1 IT1302071B1 IT1998TO000156A ITTO980156A IT1302071B1 IT 1302071 B1 IT1302071 B1 IT 1302071B1 IT 1998TO000156 A IT1998TO000156 A IT 1998TO000156A IT TO980156 A ITTO980156 A IT TO980156A IT 1302071 B1 IT1302071 B1 IT 1302071B1
- Authority
- IT
- Italy
- Prior art keywords
- combustion engine
- internal combustion
- variable operation
- operation valves
- valves
- Prior art date
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
- 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
- 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
- F01L1/14—Tappets; Push rods
- F01L1/16—Silencing impact; Reducing wear
-
- 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)
- Valve Device For Special Equipments (AREA)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT1998TO000156A IT1302071B1 (it) | 1998-02-26 | 1998-02-26 | Motore a combustione interna con valvole ad azionamento variabile. |
ES99830065T ES2229658T3 (es) | 1998-02-26 | 1999-02-08 | Motor de combustion interna con sistema de accionamiento hidraulico de valvula variable. |
EP99830065A EP0939205B1 (en) | 1998-02-26 | 1999-02-08 | Internal combustion engine with variable hydraulic valve actuating system |
DE69921216T DE69921216T2 (de) | 1998-02-26 | 1999-02-08 | Brennkraftmaschine mit variabler Hydraulik-Ventilbetätigunsvorrichtung |
US09/257,370 US6138621A (en) | 1998-02-26 | 1999-02-25 | Internal combustion engine with variable valve actuation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT1998TO000156A IT1302071B1 (it) | 1998-02-26 | 1998-02-26 | Motore a combustione interna con valvole ad azionamento variabile. |
Publications (2)
Publication Number | Publication Date |
---|---|
ITTO980156A1 ITTO980156A1 (it) | 1999-08-26 |
IT1302071B1 true IT1302071B1 (it) | 2000-07-20 |
Family
ID=11416488
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT1998TO000156A IT1302071B1 (it) | 1998-02-26 | 1998-02-26 | Motore a combustione interna con valvole ad azionamento variabile. |
Country Status (5)
Country | Link |
---|---|
US (1) | US6138621A (it) |
EP (1) | EP0939205B1 (it) |
DE (1) | DE69921216T2 (it) |
ES (1) | ES2229658T3 (it) |
IT (1) | IT1302071B1 (it) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6510824B2 (en) * | 1997-12-11 | 2003-01-28 | Diesel Engine Retarders, Inc. | Variable lost motion valve actuator and method |
US8820276B2 (en) | 1997-12-11 | 2014-09-02 | Jacobs Vehicle Systems, Inc. | Variable lost motion valve actuator and method |
GB2348245B (en) * | 1999-03-25 | 2002-10-23 | Ricardo Inc | Valvegear for engines of reciprocating piston type |
ATE454536T1 (de) * | 1999-09-16 | 2010-01-15 | Diesel Engine Retarders Inc | Verfahren und vorrichtung zur kontrolle der ventilschliessgeschwindigkeit |
IT1307361B1 (it) * | 1999-10-06 | 2001-11-06 | Fiat Ricerche | Perfezionamenti ai motori a combustione interna con valvole adazionamento variabile. |
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. |
ITTO20010269A1 (it) * | 2001-03-23 | 2002-09-23 | Fiat Ricerche | Motore a combustione interna, con sistema idraulico di azionamento variabile delle valvole, e mezzi di compensazione delle variazioni di vol |
ITTO20010272A1 (it) * | 2001-03-23 | 2002-09-23 | Fiat Ricerche | Motore a combustione interna con valvole ad azionamento variabile e punteria idraulica ausiliaria. |
US6522452B2 (en) * | 2001-04-26 | 2003-02-18 | Jds Uniphase Corporation | Latchable microelectromechanical structures using non-newtonian fluids, and methods of operating same |
ITTO20020149A1 (it) * | 2002-02-21 | 2003-08-21 | C R F Societa Con Sortile Per | Motore pluricilindrico a combustione interna con dispositivo idraulico a controllo elettronico per l'azionamento variabile delle valvole, in |
ITTO20020234A1 (it) * | 2002-03-15 | 2003-09-15 | Fiat Ricerche | Motore pluricilindrico a combustione interna con dispositivo idraulico a controllo elettronico per l'azionamento variabile delle valvole e d |
ITTO20020569A1 (it) * | 2002-07-01 | 2004-01-02 | Fiat Ricerche | Motore a combustione interna con sistema idraulico a controllo elettronico per l'azionamento delle valvole di aspirazione, con mezzi di comp |
JP4244597B2 (ja) * | 2002-08-27 | 2009-03-25 | トヨタ自動車株式会社 | 内燃機関 |
DE10239748A1 (de) * | 2002-08-29 | 2004-03-11 | Ina-Schaeffler Kg | Nehmereinheit eines strömungsmittelbetätigten variablen Ventiltriebs einer Brennkraftmaschine |
ES2279329T3 (es) * | 2004-01-16 | 2007-08-16 | C.R.F. Societa' Consortile Per Azioni | Motor de combustion interna con un unico arbol de levas que controla las valvulas de escape de forma mecanica, y las valvulas de admision por medio de un dispositivo hidraulico controlado electronicamente. |
JP4616229B2 (ja) * | 2006-09-29 | 2011-01-19 | 本田技研工業株式会社 | 多気筒内燃機関 |
JP4656052B2 (ja) * | 2006-12-21 | 2011-03-23 | トヨタ自動車株式会社 | 内燃機関のバルブ特性制御装置 |
ATE469293T1 (de) | 2008-04-10 | 2010-06-15 | Fiat Ricerche | Turbokraftstoffmotor mit variabler steuerung der aufnahmeventile |
EP2184451B1 (en) | 2008-11-07 | 2011-08-17 | C.R.F. Società Consortile per Azioni | Diesel engine having cams for driving the intake valves which have a main lobe and an additional lobe connected to each other |
DE602008005159D1 (de) | 2008-11-07 | 2011-04-07 | Fiat Ricerche | Dieselmotor mit variabler Einlassventilbetätigung und einer internen Abgasrückführung |
EP2204566B1 (en) | 2008-12-29 | 2011-06-29 | Fiat Group Automobiles S.p.A. | Adaptive control system of the air-fuel ratio of an internal combustione engine with a variable valve timing system |
JP4743287B2 (ja) * | 2009-02-04 | 2011-08-10 | トヨタ自動車株式会社 | 可変動弁装置の制御装置 |
EP2397674B1 (en) | 2010-06-18 | 2012-10-24 | C.R.F. Società Consortile per Azioni | Internal combustion engine with cylinders that can be de-activated, with exhaust gas recirculation by variable control of the intake valves, and method for controlling an internal combustion engine |
EP2653703B1 (en) | 2012-04-19 | 2014-04-30 | C.R.F. Società Consortile per Azioni | Internal combustion engine with cylinders which can be deactivated, in which the deactivated cylinders are used as pumps for recirculating exhaust gases into the active cylinders, and method for controlling this engine |
US9255498B2 (en) * | 2012-08-06 | 2016-02-09 | Mahle International Gmbh | Variable valve phasing lift and duration |
US8813605B2 (en) | 2012-08-24 | 2014-08-26 | Chrysler Group Llc | Pendulum absorber snubber |
DE102018129287A1 (de) | 2018-11-21 | 2020-05-28 | Schaeffler Technologies AG & Co. KG | Verbrennungsmotor mit hydraulisch variablem Gaswechselventiltrieb |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2827884A (en) * | 1954-07-19 | 1958-03-25 | Gen Motors Corp | Timed actuator mechanism |
DE3511819A1 (de) * | 1985-03-30 | 1986-10-09 | Robert Bosch Gmbh, 7000 Stuttgart | Ventilsteuervorrichtung |
JPH01134018A (ja) * | 1987-11-19 | 1989-05-26 | Honda Motor Co Ltd | 内燃機関の動弁装置 |
US5275136A (en) * | 1991-06-24 | 1994-01-04 | Ford Motor Company | Variable engine valve control system with hydraulic damper |
WO1993011345A1 (en) * | 1991-11-29 | 1993-06-10 | Caterpillar Inc. | Engine valve seating velocity hydraulic snubber |
US5421359A (en) * | 1992-01-13 | 1995-06-06 | Caterpillar Inc. | Engine valve seating velocity hydraulic snubber |
JPH05256115A (ja) * | 1992-03-12 | 1993-10-05 | Honda Motor Co Ltd | 内燃機関の動弁装置 |
US5158048A (en) * | 1992-04-02 | 1992-10-27 | Siemens Automotive L.P. | Lost motion actuator |
US5216988A (en) * | 1992-10-15 | 1993-06-08 | Siemens Automotive L.P. | Dual bucket hydraulic actuator |
US5531192A (en) * | 1994-08-04 | 1996-07-02 | Caterpillar Inc. | Hydraulically actuated valve system |
US5485813A (en) * | 1995-01-11 | 1996-01-23 | Siemens Automotive Corporation | Lost motion actuator with damping transition |
DE19604455B4 (de) * | 1996-02-08 | 2006-10-05 | Ivan Kunz | Pneumatische Ventilsteuerung für Verbrennungskraftmaschinen |
IT1285853B1 (it) * | 1996-04-24 | 1998-06-24 | Fiat Ricerche | Motore a combustione interna con valvole ad azionamento variabile. |
-
1998
- 1998-02-26 IT IT1998TO000156A patent/IT1302071B1/it active IP Right Grant
-
1999
- 1999-02-08 ES ES99830065T patent/ES2229658T3/es not_active Expired - Lifetime
- 1999-02-08 EP EP99830065A patent/EP0939205B1/en not_active Expired - Lifetime
- 1999-02-08 DE DE69921216T patent/DE69921216T2/de not_active Expired - Lifetime
- 1999-02-25 US US09/257,370 patent/US6138621A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ES2229658T3 (es) | 2005-04-16 |
ITTO980156A1 (it) | 1999-08-26 |
DE69921216D1 (de) | 2004-11-25 |
EP0939205A1 (en) | 1999-09-01 |
EP0939205B1 (en) | 2004-10-20 |
DE69921216T2 (de) | 2005-10-27 |
US6138621A (en) | 2000-10-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
0001 | Granted |