EP1307636A1 - Connection between two shaft ends, positioned coaxially one behind the other, of a gas shuttle valve in an internal combustion engine and a valve actuator - Google Patents
Connection between two shaft ends, positioned coaxially one behind the other, of a gas shuttle valve in an internal combustion engine and a valve actuatorInfo
- Publication number
- EP1307636A1 EP1307636A1 EP01956337A EP01956337A EP1307636A1 EP 1307636 A1 EP1307636 A1 EP 1307636A1 EP 01956337 A EP01956337 A EP 01956337A EP 01956337 A EP01956337 A EP 01956337A EP 1307636 A1 EP1307636 A1 EP 1307636A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shaft ends
- coupling body
- connection according
- valve
- coupling
- 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
- F01L1/34—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
-
- 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
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/10—Connecting springs to valve members
-
- 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
- F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
-
- 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
- F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
- F01L9/21—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids
- F01L2009/2125—Shaft and armature construction
Definitions
- the invention is based on a connection between two shaft ends of a gas exchange valve of an internal combustion engine and a valve actuator arranged coaxially one behind the other, with at least one coupling body at least partially enclosing the shaft ends according to the preamble of claim 1.
- connection is known from EP 0 279 265 B1, in which the coupling body consists of two half shells, the radially outer peripheral surfaces of which are cylindrical and the radially inner of which
- Circumferential surfaces complementary conical to the conically tapering ends of a piston rod of the valve control and a shaft of the gas exchange valve are formed.
- a cylindrical union sleeve is pushed over them, which is held on the half-shells by the axial pretensioning force of a valve spring supported on the bottom of the union sleeve, the stem of the gas exchange valve extending through an opening in the bottom of the union sleeve .
- the two tapered shaft ends have plate-like flanges at the end, which engage behind the coupling body formed by the half-shells, so that the two shaft ends are positively connected to one another by the coupling body.
- connection according to the invention is characterized by a high fatigue strength.
- the pre-applied to the coupling body by the clamping body is Adjustable tension.
- the clamping body contains at least two conical clamping sleeves, which can be axially screwed against one another, with conical surfaces which can be wedged against conical clamping surfaces formed on the radially outer circumferential surface of the coupling body, a defined radial prestress being able to be generated between the coupling body and the shaft ends, depending on the degree of screwing of the conical clamping sleeves.
- This is particularly advantageous in view of the possibly different surface properties depending on the gas exchange valve or valve actuator and, accordingly, the different coefficient of friction, in that for a slippery one
- Static friction necessary radial bias can be set specifically.
- the coupling body is made of several parts in the circumferential direction and preferably contains at least two semi-tubular coupling wedges which complement one another, each of which has two clamping surfaces which are arranged one behind the other on its radially outer peripheral surface and widen conically, each of which has a clamping surface of a conical surface of one of the conical clamping sleeves assigned. Both cone clamping sleeves are expediently provided with an attachment surface for a screwing tool.
- positioning projections and positioning recesses that interlock with one another are provided for positioning the coupling body on the shaft ends on the coupling body and one shaft end each. This ensures that the coupling body is clamped against the shaft ends in a defined position and that there is a balanced surface coverage.
- the coupling wedges have, on their radially inner, cylindrical peripheral surface, annular beads which extend in the peripheral direction and of which one annular bead is assigned to an annular groove of one shaft end.
- Ring beads and ring grooves have a substantially semicircular cross section, the inner radius of the ring grooves being larger than the outer radius of the ring beads in order to avoid direct material contact as far as possible and to keep the notch stresses caused by the ring grooves low.
- connection between the valve actuator and the gas exchange valve is preferably arranged in an accessible area outside a valve actuator housing. It is then very easy to replace the gas exchange valve or valve actuator in the event of a repair; it is not necessary to disassemble the valve actuator.
- FIG. 1 shows a lateral cross-sectional representation through a preferred embodiment of a connection according to the invention between a shaft end of a gas exchange valve. tils an internal combustion engine and a piston rod of a valve actuator;
- FIG. 3 shows an enlarged view of detail A from FIG. 1.
- FIG. 1 Of a valve train of an internal combustion engine, only one gas exchange valve 1 is shown in FIG. 1, which is actuated by a piston rod 2 of a valve actuator 4 in such a way that it performs upward and downward opening and closing movements.
- the piston rod 2 of the valve actuator 4 and a stem 6 of the gas exchange valve 1 are arranged coaxially one behind the other, with one stem end 8 of the piston rod 2 and one stem end 10 of the stem 6 of the gas exchange valve 1 lying opposite one another.
- the piston rod 2 and the stem 6 of the gas exchange valve 1 preferably have the same diameter.
- a coupling body 14 is provided, which both the shaft end 8 of the
- Piston rod 2 as well as at least partially encloses the shaft end 10 of the gas exchange valve 1.
- the coupling body 14, viewed in the circumferential direction, is preferably made of several parts and consists of two semi-tubular coupling wedges 16, 18, which essentially complement one another, as best shown in FIG.
- FIG. 2 Sectional view of Figure 2 can be seen.
- the radially inner peripheral surfaces of the two coupling wedges 16, 18 are cylindrical and have the same radius as the piston rod 2 and the shaft 6 of the gas exchange valve 1. Seen in the circumferential direction, the two coupling wedges 16, 18 do not close together without gaps, but a narrow gap 20 remains at the two joints, so that for the two coupling wedges 16 , 18 there is a circumferential compensation if radial pressure is exerted on them from the outside.
- positioning projections and positioning recesses which interlock with one another are provided for positioning the coupling body 14 on the shaft ends 8, 10 on the coupling body 14 and one shaft end 8, 10 each. This ensures that the coupling body 14 is in a defined position relative to the two shaft ends 8, 10 and that there is a balanced surface coverage.
- the two coupling wedges 14, 16 each have two on their radially inner, cylindrical peripheral surface
- Ring beads extending circumferentially, from which an upper ring bead 22 engages in a circumferential annular groove 24 formed on the shaft end 8 of the piston rod 2 and a lower ring bead 26 engages in an annular groove 28 present on the shaft end 10 of the gas exchange valve 1.
- the ring beads 22, 26 do not lie in the ring grooves 24, 28 of the shaft ends, since their inner radius is larger than the outer radius of the ring beads 22, 26.
- the two semi-tubular coupling wedges 16, 18 each have clamping surfaces 30, 32 arranged one behind the other on their radially outer circumferential surface and widening conically in order to be able to clamp the coupling wedges 16, 18 radially against the two shaft ends 8, 10.
- a clamping body preferably two conical clamping sleeves 34, 36, which can be axially screwed against one another, is provided with conical surfaces 38, 40, which can be tipped against the clamping surfaces 30, 32 of the coupling wedges 16, 18, with a defined radial preload depending on the degree of screwing of the two conical clamping sleeves 34, 36 between the coupling wedges 16, 18 and the two shaft ends
- the threads 42, 44 are therefore outside the force flow that occurs when the valve is actuated, which flows from the piston rod 2 via the two coupling Wedges 1 6, 18 extends to the shaft 6 of the gas exchange valve 1 and is only subject to the static preload for applying the frictional engagement between the coupling wedges 16, 18 and the shaft ends 8, 10. Since the annular beads 22, 26 of the two coupling sleeves 16, 18 do not rest in the annular grooves 24, 28 of the shaft ends 8, 10, the one generated by the radial pressing of the coupling wedges 16, 18 predominates when coupling the piston rod 2 and the shaft 6 of the gas exchange valve 1 Frictional component compared to the form-locking component caused by the mutually assigned ring bead / ring groove pairings.
- the annular bead / annular groove pairings thus primarily serve to fix the position of the coupling body 14 on the shaft ends 8, 10 and can therefore be dimensioned correspondingly small. As a result, their notch effect at the shaft ends 8, 10 and their influence on the fatigue strength of the connection is low.
- Valve actuator 4 and the stem 6 of the gas exchange valve is, as can be seen from FIG. 1, arranged outside a valve actuator housing 52 of the valve actuator 4 and in an easily accessible area, so that the valve divider 4 and the gas exchange valve 1 can easily be assembled and disassembled as individual modules.
- the coupling body 14 could also be designed as a one-piece sleeve instead of as a two-piece sleeve, in which case a continuous, axially extending slot must be provided in the wall of the sleeve in order to enable a compensating movement of the one-piece sleeve in the circumferential direction , if radial bias is applied from the outside by the wedge effect of the cone clamping sleeves 34, 36.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lift Valve (AREA)
- Actuator (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Braking Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10036810A DE10036810A1 (en) | 2000-07-28 | 2000-07-28 | Connection between two shaft ends of a gas exchange valve of an internal combustion engine and a valve actuator arranged coaxially one behind the other |
DE10036810 | 2000-07-28 | ||
PCT/DE2001/002691 WO2002010558A1 (en) | 2000-07-28 | 2001-07-18 | Connection between two shaft ends, positioned coaxially one behind the other, of a gas shuttle valve in an internal combustion engine and a valve actuator |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1307636A1 true EP1307636A1 (en) | 2003-05-07 |
EP1307636B1 EP1307636B1 (en) | 2006-04-19 |
Family
ID=7650538
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01956337A Expired - Lifetime EP1307636B1 (en) | 2000-07-28 | 2001-07-18 | Connection between two shaft ends, positioned coaxially one behind the other, of a gas shuttle valve in an internal combustion engine and a valve actuator |
Country Status (8)
Country | Link |
---|---|
US (1) | US6752116B2 (en) |
EP (1) | EP1307636B1 (en) |
JP (1) | JP2004505194A (en) |
KR (1) | KR100777933B1 (en) |
CN (1) | CN1258640C (en) |
DE (2) | DE10036810A1 (en) |
HU (1) | HUP0202740A2 (en) |
WO (1) | WO2002010558A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3000534A1 (en) * | 2013-01-02 | 2014-07-04 | Peugeot Citroen Automobiles Sa | Link for use between shank of solenoid valve and support of actuator, has connection element placed in cavity according to direction with regard to oblique direction of axis of shank, where direction is approximately perpendicular to axis |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10141176A1 (en) * | 2001-08-22 | 2003-03-20 | Bosch Gmbh Robert | Detachable connection for coupling a gas exchange valve of an internal combustion engine to an actuator |
US7796804B2 (en) * | 2007-07-20 | 2010-09-14 | Kla-Tencor Corp. | Methods for generating a standard reference die for use in a die to standard reference die inspection and methods for inspecting a wafer |
CN102678220B (en) * | 2011-03-08 | 2016-04-20 | 朱譞晟 | Axially drive the single shaft dual control full Variable Valve Time of arc chute formula and lift mechanisms |
KR101176046B1 (en) | 2011-12-30 | 2012-08-24 | 오종찬 | Segment automatic stand taper control block separation shuttle valve |
CN104314635B (en) * | 2014-09-04 | 2017-01-11 | 宁波华液机器制造有限公司 | Variable driver |
DE102017206151B3 (en) * | 2017-04-11 | 2018-10-11 | Ford Global Technologies, Llc | Internal combustion engine comprising valve trains with valve springs and method for mounting such a valve spring |
US11092209B2 (en) * | 2017-08-25 | 2021-08-17 | Thyssenkrupp Bilstein Gmbh | Vibration damper for vehicles, a piston rod and a method for fixing a working piston on a piston rod of a vibration damper |
CN109794764B (en) * | 2019-04-04 | 2024-03-29 | 深圳万测试验设备有限公司 | Coaxial adjusting device |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR931101A (en) * | 1945-07-23 | 1948-02-13 | Eaton Mfg Co | Improvements to a valve for an internal combustion engine |
SU1621816A3 (en) | 1987-02-10 | 1991-01-15 | Интератом Гмбх (Фирма) | Hydraulic device for controlling valves of i.c.engine |
JPH1113435A (en) * | 1997-06-25 | 1999-01-19 | Toyota Motor Corp | Solenoid operated valve |
DE19811779C1 (en) * | 1998-03-18 | 1999-04-22 | Daimler Chrysler Ag | Device for operating gas exchange valve for internal combustion engine |
DE19824475A1 (en) * | 1998-05-30 | 1999-12-02 | Daimler Chrysler Ag | Electromagnetic actuator for operating gas exchange valve in IC engine |
DE19947848A1 (en) | 1998-10-28 | 2000-05-04 | Fev Motorentech Gmbh | Actuator for operating gas exchange valve in internal combustion engine has length compensated coupling element between control elements |
-
2000
- 2000-07-28 DE DE10036810A patent/DE10036810A1/en not_active Withdrawn
-
2001
- 2001-07-18 HU HU0202740A patent/HUP0202740A2/en unknown
- 2001-07-18 KR KR1020027003959A patent/KR100777933B1/en not_active IP Right Cessation
- 2001-07-18 WO PCT/DE2001/002691 patent/WO2002010558A1/en active IP Right Grant
- 2001-07-18 CN CNB018022146A patent/CN1258640C/en not_active Expired - Fee Related
- 2001-07-18 DE DE50109559T patent/DE50109559D1/en not_active Expired - Lifetime
- 2001-07-18 EP EP01956337A patent/EP1307636B1/en not_active Expired - Lifetime
- 2001-07-18 US US10/089,499 patent/US6752116B2/en not_active Expired - Fee Related
- 2001-07-18 JP JP2002516457A patent/JP2004505194A/en not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO0210558A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3000534A1 (en) * | 2013-01-02 | 2014-07-04 | Peugeot Citroen Automobiles Sa | Link for use between shank of solenoid valve and support of actuator, has connection element placed in cavity according to direction with regard to oblique direction of axis of shank, where direction is approximately perpendicular to axis |
Also Published As
Publication number | Publication date |
---|---|
KR20020032626A (en) | 2002-05-03 |
US6752116B2 (en) | 2004-06-22 |
CN1258640C (en) | 2006-06-07 |
HUP0202740A2 (en) | 2002-12-28 |
DE50109559D1 (en) | 2006-05-24 |
EP1307636B1 (en) | 2006-04-19 |
US20030029410A1 (en) | 2003-02-13 |
DE10036810A1 (en) | 2002-02-07 |
KR100777933B1 (en) | 2007-11-20 |
JP2004505194A (en) | 2004-02-19 |
CN1386159A (en) | 2002-12-18 |
WO2002010558A1 (en) | 2002-02-07 |
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