WO2011133088A1 - Valve lift device for a combustion engine - Google Patents
Valve lift device for a combustion engine Download PDFInfo
- Publication number
- WO2011133088A1 WO2011133088A1 PCT/SE2011/050442 SE2011050442W WO2011133088A1 WO 2011133088 A1 WO2011133088 A1 WO 2011133088A1 SE 2011050442 W SE2011050442 W SE 2011050442W WO 2011133088 A1 WO2011133088 A1 WO 2011133088A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- contact
- unit
- guide surface
- valve lift
- camshaft
- 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
- 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
- F01L1/181—Centre 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
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/14—Tappets; Push rods
- F01L1/146—Push-rods
-
- 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
-
- 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
- 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
- F01L13/0047—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 the movement of the valves resulting from the sum of the simultaneous actions of at least two cams, the cams being independently variable in phase in respect of each other
-
- 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
- F01L13/0063—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 modification of cam contact point by displacing an intermediate lever or wedge-shaped intermediate element, e.g. Tourtelot
Definitions
- said contact means take the form of roller means adapted to rolling along the guide surfaces. The friction between the guide surfaces and the contact means thus becomes minimal.
- the control spindle 20 By turning the control spindle 20 and the connecting elements 19 it is possible to move the first unit 16 along the guide surface 6 in a plane which is perpendicular to the camshaft's rotational axis 5a.
- the control spindle 20 is turned to a desired rotational position by means of a schematically depicted power means 21 activated by a control unit 22.
- the power means 21 may be operated electrically, pneumatically or hydraulically.
- the control unit 22 may be a computer unit with suitable software.
- the cam follower 8 comprises also a second unit 17 connected to the pushrod 11.
- the second unit 17 comprises the second roller means 10.
- the first unit 16 comprises a contact portion with a contact surface 23.
- the second unit comprises a contact portion in the form of a contact roller 24 situated vertically above the contact surface 23.
- the control unit 22 activates the power means 21, which turns the control spindle 20 to the rotational position depicted in Fig. 3.
- the connecting elements 19 of the control spindle 20 here move the first unit 16 to a position in which the first roller means 9 makes contact with the first guide surface 6 at the contact position 9a 2 .
- the valve lift begins when the angle v of the camshaft 5 is -50°.
- the second roller means 10 comes into contact with the initial portion 7ai .
- the protruding portion 7a lifts the second roller means 10 and the second unit 17.
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
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2011800196736A CN102859131A (en) | 2010-04-19 | 2011-04-12 | Valve lift device for a combustion engine |
US13/641,609 US8770161B2 (en) | 2010-04-19 | 2011-04-12 | Valve lift device for a combustion engine |
JP2013506111A JP5685309B2 (en) | 2010-04-19 | 2011-04-12 | Valve lift device for combustion engine |
EP11772318.9A EP2561191B1 (en) | 2010-04-19 | 2011-04-12 | Valve lift device for a combustion engine |
RU2012148904/06A RU2513215C1 (en) | 2010-04-19 | 2011-04-12 | Ice valve lifter |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE1050381-1 | 2010-04-19 | ||
SE1050381A SE534761C2 (en) | 2010-04-19 | 2010-04-19 | Valve lift device of an internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011133088A1 true WO2011133088A1 (en) | 2011-10-27 |
Family
ID=44834375
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE2011/050442 WO2011133088A1 (en) | 2010-04-19 | 2011-04-12 | Valve lift device for a combustion engine |
Country Status (7)
Country | Link |
---|---|
US (1) | US8770161B2 (en) |
EP (1) | EP2561191B1 (en) |
JP (1) | JP5685309B2 (en) |
CN (1) | CN102859131A (en) |
RU (1) | RU2513215C1 (en) |
SE (1) | SE534761C2 (en) |
WO (1) | WO2011133088A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104047660A (en) * | 2013-03-15 | 2014-09-17 | 科勒公司 | Variable valve timing apparatus and internal combustion engine incorporating the same |
EP3073070A1 (en) * | 2015-03-25 | 2016-09-28 | Caterpillar Energy Solutions GmbH | Camshaft based variable valve timing |
AT522750A1 (en) * | 2019-07-04 | 2021-01-15 | Avl List Gmbh | VARIABLE VALVE DRIVE DEVICE |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5907089B2 (en) * | 2013-02-26 | 2016-04-20 | マツダ株式会社 | Engine valve gear |
SE541922C2 (en) * | 2017-03-31 | 2020-01-07 | Scania Cv Ab | Four-stroke Internal Combustion Engine and thereto related Vehicle and Method |
CN108757081B (en) * | 2018-05-22 | 2021-06-08 | 大连理工大学 | Multi-rod continuously variable valve mechanism with bottom camshaft |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0262256A1 (en) * | 1986-10-03 | 1988-04-06 | Werner Dipl.-Ing. Emmel | Cam shaft for a piston engine |
US5253621A (en) * | 1992-08-14 | 1993-10-19 | Group Lotus Plc | Valve control means |
US20050092269A1 (en) * | 2003-10-31 | 2005-05-05 | Caterpillar Inc. | Engine valve actuation system |
US20070199529A1 (en) * | 2006-02-28 | 2007-08-30 | Caterpillar Inc. | Variable engine valve actuation system |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE648807C (en) * | 1935-07-30 | 1937-08-09 | Karl Wessel Dipl Ing | Valve control for combustion engines |
US2934052A (en) * | 1958-11-17 | 1960-04-26 | Irvin R Longenecker | Valve operating mechanism |
US4077369A (en) * | 1976-04-21 | 1978-03-07 | Joseph F. Buehner, Trustee | Internal combustion engine valve stroke adjusting device and combination thereof with engine |
US4205634A (en) * | 1978-02-17 | 1980-06-03 | Tourtelot Edward M Jr | Variable valve timing mechanism |
US4469056A (en) * | 1983-02-22 | 1984-09-04 | Tourtelot Jr Edward M | Dual follower variable valve timing mechanism |
JPS62137313A (en) | 1985-12-09 | 1987-06-20 | Masaharu Fukue | Towing type discriminating device for quality of soil of seabed |
JPS62137313U (en) * | 1986-02-22 | 1987-08-29 | ||
JPS634313A (en) | 1986-06-24 | 1988-01-09 | Hiruta Kogyo Kk | Adjusting device for position of pedal of brake or the like |
JPS634313U (en) * | 1986-06-27 | 1988-01-12 | ||
JPH02123215A (en) * | 1988-10-31 | 1990-05-10 | Suzuki Motor Co Ltd | Valve timing varying device for four-cycle engine |
GB9021270D0 (en) * | 1990-10-01 | 1990-11-14 | Mitchell Stephen W | Improvements in or relating to driving connections between two rotatable bodies |
US6491008B1 (en) * | 2001-10-18 | 2002-12-10 | Ford Global Technologies, Inc. | Variable valve timing adjustable roller rocker arm assembly |
RU2328604C2 (en) * | 2003-12-24 | 2008-07-10 | Хонда Мотор Ко., Лтд. | Device to adjust valve up travel in internal combustion engine |
US7430997B2 (en) * | 2004-02-06 | 2008-10-07 | Mikuni Corporation | Variable valve operating device for engine |
US7299775B2 (en) * | 2004-08-31 | 2007-11-27 | Toyota Jidosha Kabushiki Kaisha | Variable valve operating device |
CN101273186B (en) * | 2005-09-27 | 2010-05-19 | 丰田自动车株式会社 | Variable valve gear and method of adjusting valve opening rate |
FR2899276A1 (en) * | 2006-03-28 | 2007-10-05 | Renault Sas | Intake and exhaust valves` variable lifting control device for e.g. petrol engine, has cam follower comprising support zones with clearance compensating device for compensating clearance induced by displacement of axle |
EP2025888A1 (en) * | 2007-08-06 | 2009-02-18 | Iveco S.p.A. | Device for actuating the decompression engine brake in an internal combustion engine provided with hydraulic tappets |
CN101403326A (en) * | 2008-06-16 | 2009-04-08 | 奇瑞汽车股份有限公司 | Variable air valve lift range mechanism of internal combustion engine |
-
2010
- 2010-04-19 SE SE1050381A patent/SE534761C2/en unknown
-
2011
- 2011-04-12 US US13/641,609 patent/US8770161B2/en not_active Expired - Fee Related
- 2011-04-12 RU RU2012148904/06A patent/RU2513215C1/en not_active IP Right Cessation
- 2011-04-12 WO PCT/SE2011/050442 patent/WO2011133088A1/en active Application Filing
- 2011-04-12 EP EP11772318.9A patent/EP2561191B1/en active Active
- 2011-04-12 CN CN2011800196736A patent/CN102859131A/en active Pending
- 2011-04-12 JP JP2013506111A patent/JP5685309B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0262256A1 (en) * | 1986-10-03 | 1988-04-06 | Werner Dipl.-Ing. Emmel | Cam shaft for a piston engine |
US5253621A (en) * | 1992-08-14 | 1993-10-19 | Group Lotus Plc | Valve control means |
US20050092269A1 (en) * | 2003-10-31 | 2005-05-05 | Caterpillar Inc. | Engine valve actuation system |
US20070199529A1 (en) * | 2006-02-28 | 2007-08-30 | Caterpillar Inc. | Variable engine valve actuation system |
Non-Patent Citations (1)
Title |
---|
See also references of EP2561191A4 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104047660A (en) * | 2013-03-15 | 2014-09-17 | 科勒公司 | Variable valve timing apparatus and internal combustion engine incorporating the same |
EP2792860A3 (en) * | 2013-03-15 | 2015-07-15 | Kohler Co. | Variable valve timing apparatus and internal combustion engine incorporating the same |
EP3073070A1 (en) * | 2015-03-25 | 2016-09-28 | Caterpillar Energy Solutions GmbH | Camshaft based variable valve timing |
AT522750A1 (en) * | 2019-07-04 | 2021-01-15 | Avl List Gmbh | VARIABLE VALVE DRIVE DEVICE |
Also Published As
Publication number | Publication date |
---|---|
EP2561191B1 (en) | 2017-08-02 |
US20130032109A1 (en) | 2013-02-07 |
US8770161B2 (en) | 2014-07-08 |
JP5685309B2 (en) | 2015-03-18 |
CN102859131A (en) | 2013-01-02 |
JP2013525673A (en) | 2013-06-20 |
EP2561191A1 (en) | 2013-02-27 |
SE534761C2 (en) | 2011-12-13 |
RU2513215C1 (en) | 2014-04-20 |
EP2561191A4 (en) | 2014-12-17 |
SE1050381A1 (en) | 2011-10-20 |
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