EP1389266A1 - Valvegear mechanism for an internal combustion engine - Google Patents
Valvegear mechanism for an internal combustion engineInfo
- Publication number
- EP1389266A1 EP1389266A1 EP02732620A EP02732620A EP1389266A1 EP 1389266 A1 EP1389266 A1 EP 1389266A1 EP 02732620 A EP02732620 A EP 02732620A EP 02732620 A EP02732620 A EP 02732620A EP 1389266 A1 EP1389266 A1 EP 1389266A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- stroke
- piston
- rocker arm
- tool
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
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
- F01L13/0063—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
-
- 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
- F01L1/20—Adjusting or compensating clearance
-
- 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
- F01L1/20—Adjusting or compensating clearance
- F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
- F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
- F01L1/2405—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically by means of a hydraulic adjusting device located between the cylinder head and rocker arm
-
- 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
- F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
-
- 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
- F01L13/0021—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 rocker arm ratio
-
- 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
- F01L2013/0068—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 with an oscillating cam acting on the valve of the "BMW-Valvetronic" type
-
- 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
- F01L2303/00—Manufacturing of components used in valve arrangements
- F01L2303/01—Tools for producing, mounting or adjusting, e.g. some part of the distribution
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/18—Mechanical movements
- Y10T74/18056—Rotary to or from reciprocating or oscillating
- Y10T74/1828—Cam, lever, and slide
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/21—Elements
- Y10T74/2101—Cams
- Y10T74/2107—Follower
Definitions
- the invention relates to a valve train device for an internal combustion engine, which comprises a camshaft in a separate cylinder head of the internal combustion engine for stroke control of a gas exchange valve by means of an intermediate rocker arm which is mounted in the cylinder head on a piston of a hydraulic valve lash compensation element that can be moved.
- valve train devices with variable-stroke gas exchange valves it is particularly desirable for functional reasons to be able to measure the valve lift of a gas exchange valve per cylinder or the valve strokes of the corresponding gas exchange valves across all cylinders.
- valve lash compensation elements are to be supplied with pressure oil via the assigned lines in the separate cylinder head in order to close all relevant contact surfaces in the valve drive without play.
- the disadvantage here is for a measurement of the valve train at the end of the valve train assembly of a cylinder head manufactured in series, the handling with the amount of oil present in a cylinder head, which must be fully applied for clean further work on the cylinder head.
- the invention is based on the object of measuring and / or adjusting a generic valve train device with a rocker arm supported on a hydraulic valve lash compensating element, a measure which enables a perfect play-free area connection between contact surfaces of interacting actuating elements of a gas exchange valve without hydraulic pressurization of the valve lash compensating elements ,
- the advantage of the invention is that no pressure oil has to be supplied to the cylinder head for the measurement and adjustment of the valve train device, the measurement and adjustment is carried out, as it were, with a dry cylinder head. In the case of serial measurement and adjustment, there is no need for a separate pressure oil system. It is also advantageous that the cylinder head is fed oil-free to the other processing stations in the series.
- the tool can engage an articulated ball provided on the piston for the rocker arm, specifically in the transition region to a cylindrical section of the piston.
- the piston be equipped with a separate device for positive and / or non-positive connection with the tool.
- the piston of a valve lash compensating element that can be supplied partially filled with oil has an outer circumferential groove between a guide section and a rocker arm joint head for engaging a tool with a fork-like end section. This arrangement is advantageous for a low-profile valve lash compensation element.
- the piston is loaded in the stroke direction by a translating or rotating or swiveling tool. is actuated, the respective tool being subjected to force in order to maintain the surface closure between the valve drive-side contact surfaces.
- the piston of a hydraulic valve lash compensation element - HVA - designed according to the invention is preferably used in a further embodiment of the invention for a variable-stroke gas exchange valve, a rocker arm equipped with a roller having a control path comprising an idle stroke curve and a stroke curve against the action of a return spring interacts by the camshaft actuated pivot lever, the pivot starting position corresponding to the respective stroke variation being adjustable / adjustable.
- a valve train device with a variable gas exchange valve is shown and described, for example, in DE 199 13 742 A1.
- Figure 2 shows a hydraulic valve lash compensation element with a piston designed according to the invention for rocker arm support.
- a valve train device 1 for an internal combustion engine (not shown) comprises, in a separate cylinder head 2, a camshaft 3 for stroke control of a gas exchange valve 4 by means of an intermediate rocker arm 5, which is mounted in the cylinder head 2 on a piston 6 of a hydraulic valve lash compensating element - HVA - 7 which can be moved ,
- the piston 6 of the HVA 7 is preferably equipped with a separate device 8 for the positive and / or non-positive connection with the tool 9.
- an outer circumferential groove 15 is provided as a separate device 8 on the piston 6 of a valve lash compensating element or HVA 7, partially supplied with oil, between a guide section 13 and a rocker arm joint head 14 for engaging the tool 9 with a fork-like end section 9 '.
- a tool 9 acting in a translatory manner according to arrow A can be provided, or else a tool acting in a rotational or pivotable manner.
- the respective tool 9 is acted upon by means of a tension spring 16.
- the valve drive device 1 comprises a gas exchange valve 4 which can be adjusted in terms of stroke, a rocker arm 5 equipped with a roller 17 having a control path 19 comprising an idle stroke curve 11 and stroke curve 18 and one actuated by the camshaft 3 against the action of a return spring 20 Swiveling lever 21 cooperates, the swivel starting position corresponding to the respective stroke variation being adjustable / adjustable by means of a control device 25.
- valve train device 1 To measure and / or adjust the valve train device 1 in a separate cylinder head 2, the latter is positioned in a device 22 without pressure oil connection for the HVA 7 at 23 and fixed at 24, the pistons 6 subsequently All compensating elements HVA 7 are mechanically stroke-actuated via automatically supplied tools 9, so that there is no play between the contact surfaces 10 and 11 and with controlled contact force, for example by means of a tension spring 16. Furthermore, all swivel levers 21 of the stroke-variable valve train device 1 are actuated via the common control device 25 in terms of their pivot points for a predetermined minimum stroke of all gas exchange valves 4 and then the camshaft 3 is coupled with a drive device (not shown) arranged in the device 22 and driven at a predetermined speed. The gas exchange valves 4 thus actuated by a stroke are connected to displacement transducers 26 for recording the valve strokes, the individual values of which are shown on a monitor with a predetermined tolerance band and are also documented.
- the documentation of the valve lift is effected only after a predetermined break-in period of the valve drive apparatus 1.
- a outside 'the tolerance band lying valve lift of the cam follower is changed to this Gascicventii against another classified drag lever. 5
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
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10125082A DE10125082A1 (en) | 2001-05-23 | 2001-05-23 | Valve drive device for an internal combustion engine comprises a piston having a device for attaching a tool for mechanical stroke actuation for play-free closing of the contact surfaces of a trailing lever and a valve drive element |
DE10125082 | 2001-05-23 | ||
PCT/EP2002/004175 WO2002095193A1 (en) | 2001-05-23 | 2002-04-16 | Valvegear mechanism for an internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1389266A1 true EP1389266A1 (en) | 2004-02-18 |
EP1389266B1 EP1389266B1 (en) | 2009-03-18 |
Family
ID=7685822
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02732620A Expired - Lifetime EP1389266B1 (en) | 2001-05-23 | 2002-04-16 | Valvegear mechanism for an internal combustion engine |
Country Status (7)
Country | Link |
---|---|
US (1) | US6959674B2 (en) |
EP (1) | EP1389266B1 (en) |
JP (1) | JP3981637B2 (en) |
AT (1) | ATE426086T1 (en) |
DE (2) | DE10125082A1 (en) |
ES (1) | ES2320634T3 (en) |
WO (1) | WO2002095193A1 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10260557A1 (en) | 2002-12-21 | 2004-07-01 | Ina-Schaeffler Kg | Intermediate lever for a variable valve train of an internal combustion engine |
DE10303128A1 (en) * | 2003-01-28 | 2004-07-29 | Fev Motorentechnik Gmbh | Variable valve drive for a gas shuttle valve in a reciprocating piston engine, especially a reciprocating internal combustion engine, comprises a drive device acting on a stroke transfer device having an adjustable control element |
DE10304991A1 (en) * | 2003-02-07 | 2004-08-19 | Ina-Schaeffler Kg | Adjusting device for effecting lifting functions of lever-type cam-driven transmission links works in a varied valve mechanism for controlling a spark-ignition internal combustion engine under load |
JP4507997B2 (en) * | 2005-06-15 | 2010-07-21 | 三菱自動車工業株式会社 | Variable valve operating device for internal combustion engine |
BRPI0621257A2 (en) * | 2006-01-26 | 2016-11-08 | Giovanni Arvedi | process to produce steel strip |
JP4586768B2 (en) * | 2006-05-29 | 2010-11-24 | トヨタ自動車株式会社 | Valve operating device for internal combustion engine |
EP1905967B1 (en) | 2006-09-25 | 2009-12-16 | Honda Motor Co., Ltd. | Variable valve lift internal combustion engine |
JP2008190441A (en) | 2007-02-06 | 2008-08-21 | Honda Motor Co Ltd | Lift amount adjusting device for variable valve train |
US9217382B2 (en) | 2012-03-13 | 2015-12-22 | Ford Global Technologies, Llc | Method and system for engine air control |
DE102016015443B4 (en) | 2016-12-23 | 2018-10-25 | Dr. Ing. H.C. F. Porsche Ag | Method for adjusting the valve clearance on an internal combustion engine |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2247327C3 (en) * | 1972-09-27 | 1975-06-12 | Daimler-Benz Ag, 7000 Stuttgart | Method and device for measuring valve clearance in internal combustion engines |
JPS5941614A (en) * | 1982-08-31 | 1984-03-07 | Honda Motor Co Ltd | Valve timing measuring device of hydraulic tappet adjusting engine |
JPS59218316A (en) * | 1983-05-26 | 1984-12-08 | Honda Motor Co Ltd | Valve lifting mechanism of internal-combustion engine |
DE4208335A1 (en) * | 1992-03-16 | 1993-09-23 | Kloeckner Humboldt Deutz Ag | Valve play adjustment mechanism for vehicle IC engine - has valve gauge built as measuring device to indicate variations from optimal setting |
JPH07103854A (en) * | 1993-10-05 | 1995-04-21 | Mitsubishi Motors Corp | Inspection apparatus for dynamic valve system valve mechanism of engine |
US5695430A (en) * | 1994-09-21 | 1997-12-09 | Moyer; David F. | Hybrid internal combustion engine |
JP3831104B2 (en) * | 1997-05-13 | 2006-10-11 | 株式会社日立製作所 | Intake / exhaust valve electromagnetic drive |
DE19913742A1 (en) | 1999-03-26 | 2000-09-28 | Bayerische Motoren Werke Ag | Device for stroke adjustment of a gas exchange valve in the cylinder head of an internal combustion engine |
-
2001
- 2001-05-23 DE DE10125082A patent/DE10125082A1/en not_active Withdrawn
-
2002
- 2002-04-16 JP JP2002591638A patent/JP3981637B2/en not_active Expired - Fee Related
- 2002-04-16 AT AT02732620T patent/ATE426086T1/en active
- 2002-04-16 WO PCT/EP2002/004175 patent/WO2002095193A1/en active Application Filing
- 2002-04-16 EP EP02732620A patent/EP1389266B1/en not_active Expired - Lifetime
- 2002-04-16 DE DE50213367T patent/DE50213367D1/en not_active Expired - Lifetime
- 2002-04-16 ES ES02732620T patent/ES2320634T3/en not_active Expired - Lifetime
-
2003
- 2003-11-20 US US10/716,403 patent/US6959674B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO02095193A1 * |
Also Published As
Publication number | Publication date |
---|---|
US6959674B2 (en) | 2005-11-01 |
US20040168661A1 (en) | 2004-09-02 |
ES2320634T3 (en) | 2009-05-27 |
ATE426086T1 (en) | 2009-04-15 |
EP1389266B1 (en) | 2009-03-18 |
JP3981637B2 (en) | 2007-09-26 |
DE10125082A1 (en) | 2002-11-28 |
JP2004521235A (en) | 2004-07-15 |
DE50213367D1 (en) | 2009-04-30 |
WO2002095193A1 (en) | 2002-11-28 |
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