EP0986696A1 - Valve system for a valve-controlled combustion engine - Google Patents
Valve system for a valve-controlled combustion engineInfo
- Publication number
- EP0986696A1 EP0986696A1 EP98928335A EP98928335A EP0986696A1 EP 0986696 A1 EP0986696 A1 EP 0986696A1 EP 98928335 A EP98928335 A EP 98928335A EP 98928335 A EP98928335 A EP 98928335A EP 0986696 A1 EP0986696 A1 EP 0986696A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- valve
- valve arrangement
- sheets
- stator
- 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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims abstract description 4
- 238000004804 winding Methods 0.000 claims description 28
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
- 229910052742 iron Inorganic materials 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 description 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
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
- F01L9/20—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
- F01L2009/2105—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids comprising two or more coils
Definitions
- the present invention relates to a valve arrangement for a valve-controlled internal combustion engine.
- the invention relates to a valve arrangement in which the reciprocating movement of the valve member is not effected and controlled by a camshaft. Rather, an electrically operated valve drive is used in the arrangement according to the invention.
- DE 30 19 109 AI describes a valve arrangement which is based on a linear motor for actuating the valves.
- the linear motor is controlled by a microprocessor depending on one or more motor parameters (speed, fuel quantity, etc.). However, no information on the design of the linear motor can be found in this document.
- a gas valve control with a gas exchange valve which is actuated by an electromagnet arrangement.
- a special configuration of the pole leg of the electromagnet arrangement generates a signal related to the movement of the armature in the control line of the electromagnet arrangement. This signal can be evaluated to identify any anchor position without additional sensors.
- a major problem when using an electromagnet arrangement for actuating the valve is the high level of noise when the respective end positions are reached, the abrupt braking when the end positions are reached and the high holding currents required.
- differential electromagnet arrangements which are also proposed in various ways and which are subjected to increasing currents in a targeted manner in order to achieve the required thrust of approximately 300-400 N for car internal combustion engines.
- the valve which is loaded by a spring arrangement, therefore initially carries out an oscillating movement before an iron plate arranged on the valve stem bears against the armature of the electromagnet arrangement, so that a much lower holding current is required.
- the maximum engine speed is considerably limited.
- the start-up time is relatively long since it takes some time for the valve assembly to swing into its desired position due to the high dynamic force required.
- EP 0 485 231 AI also shows a similar type of design of the stator, the stator coils and the rotor of a drive device for a valve arrangement in internal combustion engines.
- teeth of the stator divided in the radial and tangential directions are each surrounded by a radially oriented winding.
- the invention teaches a valve arrangement for a valve-controlled internal combustion engine, with an electric linear motor as an actuator for a valve member, which is defined by the features of claim 1.
- This arrangement enables a very small pole pitch of the linear motor, so that a very high force density can be achieved.
- the force generated by the linear motor can be precisely adjusted along the stroke of the valve member. It is therefore not necessary to apply considerable kinetic energy to the valve member so that it takes on its end position. This means that considerably less energy is required to actuate the valve member than in the arrangements known from the prior art. This also means significantly less noise and less wear.
- the arrangement of the stator winding makes it possible to keep the vibrating forces acting on the winding low, so that vibrations of the winding or friction of the winding on the metal sheets are low. This makes it possible to make do with minimal insulation material or lining material of the winding chamber. This also contributes to the compactness and reliability of the overall arrangement. This also results in a high power density even with small linear motors, since the filling factor of the winding chamber (winding volume in the winding chamber in relation to the total volume of the winding chamber) is high.
- the sheets preferably have at least one recess which contains iron material for connecting the sheets.
- This iron material can be formed by (packed) iron wires that penetrate the sheets across their surface.
- the iron material can also be formed by iron particles which are pressed into the recesses in the metal sheets by means of synthetic resin or the like.
- the invention enables the construction of an actuator in which the at least one winding contributes over its entire extent to the effective generation of force in the linear motor. This means that the winding has no end windings, as is the case with conventional motors. The reason for this is that the winding is completely accommodated between the sheets of the stator in the winding chambers and the winding does not protrude beyond the teeth of the stator in the axial direction or in the radial direction.
- the valve arrangement according to the invention thus has an actuator which, compared to a conventional motor, has considerably less copper for generating a comparable magnetic field.
- the rotor can be designed as an asynchronous rotor or as a synchronous rotor, or in particular as a reluctance rotor.
- Valve arrangement the rotor is coupled to a sensor for path detection, preferably a moving coil arrangement.
- the rotor can be coupled to a resonance spring arrangement.
- the runner is preferably designed as a hybrid runner with an iron body in which copper or aluminum tires are inserted.
- the invention relates to an internal combustion engine with at least one combustion cylinder, with at least one valve arrangement for intake or exhaust valves with one or more of the above features.
- valve arrangement for a valve-controlled internal combustion engine is schematically illustrated in longitudinal section.
- an electric linear motor 10 serves as an actuator for a valve member 12.
- the linear motor 10 has a rotor 16 coupled to the valve member 12 via a rod 14 and a stator 18.
- the stand 18 is constructed from circular iron sheets 20, the surface of which is oriented perpendicular to the direction of movement B of the rotor 16.
- the stand 18 has teeth 22 facing the rotor 16, each of which has a closed lateral surface facing the rotor 16.
- the individual teeth 22 have a circular cylindrical outer surface.
- oval sheets or sheets with a polygonal shape for the construction of the stand 18.
- the stator 18 has stator windings 24 which are oriented parallel to the surface of the sheets 20. For this purpose, some of the sheets 20 have a smaller diameter than those sheets which form the teeth 22. In this way, between two adjacent teeth 22, open winding chambers 26 are formed, in each of which there is a winding 24 which is concentric with the central longitudinal axis of the stator 18.
- the type of connection of the individual windings gen 24 or its application of electrical current depends on the desired type of motor (single or multi-phase motor).
- each of the sheets 20 has a recess 30 in which polymorphic iron material or packed iron wires for the magnetic connection of the sheets is contained.
- each winding 24 is arranged over its entire extent in the winding chamber, it also contributes to the effective generation of force in the linear motor over its entire length.
- the rotor 16 is a hollow cylindrical iron ring which, on its inner surface facing the stator 18, has recesses which are axially spaced apart and in which copper or aluminum rings 34 are received.
- the rotor 16 thus works as a hybrid rotor.
- the rotor 16 is coupled to a sensor 36 for detecting the path of the rotor 16 in the direction of movement B.
- the rotor 16 is supported against the housing 40 with a resonance spring arrangement 42.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19723923 | 1997-06-06 | ||
DE19723923A DE19723923C2 (en) | 1997-06-06 | 1997-06-06 | Valve arrangement for a valve-controlled internal combustion engine |
PCT/EP1998/003212 WO1998055741A1 (en) | 1997-06-06 | 1998-05-29 | Valve system for a valve-controlled combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0986696A1 true EP0986696A1 (en) | 2000-03-22 |
EP0986696B1 EP0986696B1 (en) | 2002-03-27 |
Family
ID=7831698
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98928335A Expired - Lifetime EP0986696B1 (en) | 1997-06-06 | 1998-05-29 | Valve system for a valve-controlled combustion engine |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0986696B1 (en) |
JP (1) | JP2002506499A (en) |
DE (2) | DE19723923C2 (en) |
WO (1) | WO1998055741A1 (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2784712B1 (en) * | 1998-10-15 | 2001-09-14 | Sagem | ELECTROMAGNETIC VALVE OPERATION METHOD AND DEVICE |
DE19910065C1 (en) | 1999-03-08 | 2000-07-20 | Gruendl & Hoffmann | Internal combustion engine with control valve arrangement(s) has electric linear motor as valve element actuator, hollow cylindrical stator and rotor; rotor is coupled to valve element |
DE19928560C2 (en) * | 1999-06-22 | 2002-02-07 | Bayerische Motoren Werke Ag | Torque control system for internal combustion engines in motor vehicles with an actuating device for variable valve control |
AU2001279781A1 (en) | 2000-07-24 | 2002-02-05 | Compact Dynamics Gmbh | Gas-exchange valve control for a valve-controlled internal combustion engine |
DE10044789C2 (en) * | 2000-09-11 | 2003-06-12 | Compact Dynamics Gmbh | Driving device of a gas exchange valve for a valve-controlled internal combustion engine |
DE10035973C2 (en) * | 2000-07-24 | 2003-06-05 | Compact Dynamics Gmbh | Gas exchange valve for a valve-controlled internal combustion engine |
DE10062823A1 (en) * | 2000-12-15 | 2002-07-04 | Bob Bobolowski Gmbh | Multi-phase and multi-pole synchronous moving coil motor |
EP1536108A1 (en) * | 2003-11-24 | 2005-06-01 | Siemens Aktiengesellschaft | Linear valve drive |
DE102004042925A1 (en) * | 2004-09-02 | 2006-03-09 | Heinz Leiber | Actuated electro-magnetic/electromotive operating actuator coupling device for motor vehicle, has leaf spring loading force on movable unit e.g. valve stem and rotor directly loading force on free ends of stem, in spring`s moving directions |
DE102005017482B4 (en) | 2005-04-15 | 2007-05-03 | Compact Dynamics Gmbh | Gas exchange valve actuator for a valve-controlled internal combustion engine |
DE102005017481B4 (en) | 2005-04-15 | 2007-08-30 | Compact Dynamics Gmbh | Linear Actuator |
DE102005056860A1 (en) | 2005-11-29 | 2007-05-31 | GM Global Technology Operations, Inc., Detroit | Fuel tank made of synthetic material for motor vehicles e.g. for passenger vehicles, has opening and swirl pot which is arranged in interior of container whereby edge of opening is firmly connected with edge of swirl pot |
CN110656995B (en) * | 2019-11-08 | 2021-01-15 | 江苏科技大学 | Combined type electromagnetic drive fully-variable valve actuating mechanism applied to internal combustion engine |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1591421A (en) * | 1977-01-12 | 1981-06-24 | Lucas Industries Ltd | Valve operating mechanism |
US4533890A (en) * | 1984-12-24 | 1985-08-06 | General Motors Corporation | Permanent magnet bistable solenoid actuator |
US4810914A (en) * | 1987-03-26 | 1989-03-07 | International Business Machines Corporation | Linear actuator with multiple closed loop flux paths essentially orthogonal to its axis |
JP2639587B2 (en) * | 1989-03-30 | 1997-08-13 | 株式会社いすゞセラミックス研究所 | Valve stepping drive |
JP2709742B2 (en) * | 1989-12-20 | 1998-02-04 | 株式会社いすゞセラミックス研究所 | Electromagnetic valve drive |
JPH04175408A (en) * | 1990-11-08 | 1992-06-23 | Isuzu Ceramics Kenkyusho:Kk | Solenoid valve driving device |
DE19518056B4 (en) * | 1995-05-17 | 2005-04-07 | Fev Motorentechnik Gmbh | Device for controlling the armature movement of an electromagnetic switching device and method for driving |
DE19722632A1 (en) * | 1997-05-30 | 1998-12-03 | Schaeffler Waelzlager Ohg | Drive for periodically actuating at least one valve in internal combustion engine |
-
1997
- 1997-06-06 DE DE19723923A patent/DE19723923C2/en not_active Expired - Fee Related
-
1998
- 1998-05-29 DE DE59803523T patent/DE59803523D1/en not_active Expired - Fee Related
- 1998-05-29 JP JP50144999A patent/JP2002506499A/en active Pending
- 1998-05-29 WO PCT/EP1998/003212 patent/WO1998055741A1/en active IP Right Grant
- 1998-05-29 EP EP98928335A patent/EP0986696B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9855741A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE19723923A1 (en) | 1998-12-10 |
DE19723923C2 (en) | 2000-06-21 |
DE59803523D1 (en) | 2002-05-02 |
WO1998055741A1 (en) | 1998-12-10 |
EP0986696B1 (en) | 2002-03-27 |
JP2002506499A (en) | 2002-02-26 |
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