CA2470834A1 - Switch element for valve actuation in an internal combustion engine - Google Patents
Switch element for valve actuation in an internal combustion engine Download PDFInfo
- Publication number
- CA2470834A1 CA2470834A1 CA002470834A CA2470834A CA2470834A1 CA 2470834 A1 CA2470834 A1 CA 2470834A1 CA 002470834 A CA002470834 A CA 002470834A CA 2470834 A CA2470834 A CA 2470834A CA 2470834 A1 CA2470834 A1 CA 2470834A1
- Authority
- CA
- Canada
- Prior art keywords
- outer part
- inner element
- bore
- securing ring
- stop
- 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
- 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
-
- 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
- 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
- F01L1/245—Hydraulic tappets
-
- 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
- F01L1/245—Hydraulic tappets
- F01L1/255—Hydraulic tappets between cam 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
- 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
- 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
- F01L13/0031—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 tappet or pushrod length
-
- 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
-
- 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
- F01L2305/00—Valve arrangements comprising rollers
Abstract
A switch element (1) for valve actuation in an internal combustion engine is disclosed, preferably for valve closure, comprising a simply achieved measur e for adjustment of the coupling play, the coupling means (8) for which are retained in a recess by means of two securing rings (19, 20), the thickness of one of which may be varied.
Claims (8)
1. A switching element for a valve train of an internal combustion engine, preferably for valve deactivation, comprising an outer part and an inner element that is axially displaceable in a bore of the outer part, said outer part and said inner element comprising at least one reception each, which receptions are aligned to each other in an axially spaced-apart relative position effected by a lost motion spring, one of said receptions comprising at least one coupling means that can be displaced toward the other of said receptions for coupling the inner element to the outer part in said relative position, a first top stop being arranged between the inner element and the outer part for defining said relative position, a hydraulic lash adjuster comprising a pressure piston being installed in the inner element, which pressure piston is fixed against moving axially out of the inner element by a second stop, wherein each of the top stops is configured in the form of at least one annular element such as a securing ring and the top stops are arranged on top of each other in the bore of the outer part, as seen when looking into the bore of the outer part, a lower securing ring forms the second top stop and an upper, first securing ring forms the first top stop, variable-thickness first securing rings and constant-thickness second securing rings being provided for mounting as securing rings, and, in a direction leading out of the bore, a stack formed by a first and a second securing ring bears through the first securing ring against a stop such as an annular shoulder of the bore.
2. A switching element of claim 1, wherein the coupling means comprises two pistons that extend diametrically opposite each other in the reception of the inner element, said reception being configured as a radial bore.
3. A switching element of claim 2, wherein the reception of the outer part is made as an annular groove in the bore of the outer part and is intersected by two opposite oil passages such as bores in the outer part, and the inner element is guided in the bore of the outer part by an anti-rotation device.
4. A switching element of claim 3, wherein the anti-rotation device is arranged as a radially protruding element such as a pin that is fixed in one of the outer part and the inner element and is guided in a longitudinal recess of the opposing, other of the inner element and the outer part.
5. A switching element of claim 1, wherein the outer part comprises a means for a rotation-proof guidance of the entire switching element relative to an ambient structure.
6. A switching element of claim 5, wherein the means for the rotation-proof guidance comprises at least one flattened portion on the outer peripheral surface of the outer part.
7. A switching element of claim 1, wherein the switching element is made as a cam follower in a tappet push rod drive.
8. A method of adjusting coupling lash in a switching element for a valve train of an internal combustion engine, preferably for valve deactivation, comprising an outer part and an inner element that is axially displaceable in a bore of the outer part, said outer part and said inner element comprising at least one reception each, which receptions are aligned to each other in an axially spaced-apart relative position effected by a lost motion spring, one of said receptions comprising at least one coupling means that can be displaced toward the other of said receptions for coupling the inner element to the outer part in said relative position, a first top stop being arranged between the inner element and the outer part for defining said relative position, a hydraulic lash adjuster comprising a pressure piston being installed in the inner element, said pressure piston being fixed against moving axially out of the inner element by a second stop, each of the top stops being configured as at least one annular element such as a securing ring, the bore of the outer element comprising a bore-distant stop such as an annular shoulder and the coupling means comprising at least one piston that extends in the reception of the inner element and is made as a radial bore, said method comprising the following steps which may also be supplemented with further intermediate steps:
.cndot. a) snapping-in of the at least one second securing ring into a region axially below the stop, so that the pressure piston of the lash adjuster is pressed through its bore-distant edge by the force of a compression spring of the lash adjuster against the second securing ring and this second securing ring is pressed against the stop;
.cndot. b) with the coupling means extended into the reception of outer part, displacing the inner element in bore direction till the coupling means comes to bear against a lower surface of the reception;
.cndot. c) measuring an idling path covered by the inner element with the coupling means till contact is established with the lower surface, and .cndot. d) mating the at least one first securing ring having such a thickness that, upon a subsequent snapping-in of this first securing ring into a region axially below the stop so as to bear against the second securing ring, the inner element is displaced by the second securing ring, so that the coupling means extends at an equal distance from the reception at least in both axial directions.
.cndot. a) snapping-in of the at least one second securing ring into a region axially below the stop, so that the pressure piston of the lash adjuster is pressed through its bore-distant edge by the force of a compression spring of the lash adjuster against the second securing ring and this second securing ring is pressed against the stop;
.cndot. b) with the coupling means extended into the reception of outer part, displacing the inner element in bore direction till the coupling means comes to bear against a lower surface of the reception;
.cndot. c) measuring an idling path covered by the inner element with the coupling means till contact is established with the lower surface, and .cndot. d) mating the at least one first securing ring having such a thickness that, upon a subsequent snapping-in of this first securing ring into a region axially below the stop so as to bear against the second securing ring, the inner element is displaced by the second securing ring, so that the coupling means extends at an equal distance from the reception at least in both axial directions.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US35462802P | 2002-02-06 | 2002-02-06 | |
DE10204672A DE10204672A1 (en) | 2002-02-06 | 2002-02-06 | Valve-actuating switch element has two securing rings, thickness of one of which can be varied |
US60/354,628 | 2002-02-06 | ||
DE10204672.7 | 2002-02-06 | ||
PCT/EP2003/000307 WO2003067038A1 (en) | 2002-02-06 | 2003-01-15 | Switch element for valve actuation in an internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2470834A1 true CA2470834A1 (en) | 2003-08-14 |
CA2470834C CA2470834C (en) | 2010-09-28 |
Family
ID=27735651
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2470834A Expired - Lifetime CA2470834C (en) | 2002-02-06 | 2003-01-15 | Switch element for valve actuation in an internal combustion engine |
Country Status (8)
Country | Link |
---|---|
US (5) | US7464680B2 (en) |
EP (1) | EP1472438B1 (en) |
AT (1) | ATE300665T1 (en) |
AU (1) | AU2003205602A1 (en) |
CA (1) | CA2470834C (en) |
ES (1) | ES2243886T3 (en) |
MX (1) | MXPA04006988A (en) |
WO (1) | WO2003067038A1 (en) |
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-
2003
- 2003-01-15 US US10/498,481 patent/US7464680B2/en active Active
- 2003-01-15 ES ES03702437T patent/ES2243886T3/en not_active Expired - Lifetime
- 2003-01-15 EP EP03702437A patent/EP1472438B1/en not_active Expired - Lifetime
- 2003-01-15 WO PCT/EP2003/000307 patent/WO2003067038A1/en not_active Application Discontinuation
- 2003-01-15 MX MXPA04006988A patent/MXPA04006988A/en active IP Right Grant
- 2003-01-15 CA CA2470834A patent/CA2470834C/en not_active Expired - Lifetime
- 2003-01-15 AT AT03702437T patent/ATE300665T1/en not_active IP Right Cessation
- 2003-01-15 AU AU2003205602A patent/AU2003205602A1/en not_active Abandoned
-
2005
- 2005-03-25 US US11/088,776 patent/US6997154B2/en not_active Expired - Lifetime
-
2006
- 2006-04-13 US US11/402,904 patent/US7207303B2/en not_active Expired - Lifetime
- 2006-05-02 US US11/415,074 patent/US7210439B2/en not_active Expired - Lifetime
-
2008
- 2008-11-17 US US12/272,567 patent/US20090145391A1/en not_active Abandoned
Also Published As
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ES2243886T3 (en) | 2005-12-01 |
US6997154B2 (en) | 2006-02-14 |
US7210439B2 (en) | 2007-05-01 |
MXPA04006988A (en) | 2005-05-27 |
EP1472438B1 (en) | 2005-07-27 |
US20060219199A1 (en) | 2006-10-05 |
US20050166880A1 (en) | 2005-08-04 |
US20060191503A1 (en) | 2006-08-31 |
US20050120989A1 (en) | 2005-06-09 |
EP1472438A1 (en) | 2004-11-03 |
WO2003067038A1 (en) | 2003-08-14 |
US7207303B2 (en) | 2007-04-24 |
AU2003205602A1 (en) | 2003-09-02 |
US20090145391A1 (en) | 2009-06-11 |
ATE300665T1 (en) | 2005-08-15 |
CA2470834C (en) | 2010-09-28 |
US7464680B2 (en) | 2008-12-16 |
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