EP1561915A2 - Elektromagnetischer Hubventilaktuator in einer Brennkraftmaschine - Google Patents

Elektromagnetischer Hubventilaktuator in einer Brennkraftmaschine Download PDF

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Publication number
EP1561915A2
EP1561915A2 EP05300063A EP05300063A EP1561915A2 EP 1561915 A2 EP1561915 A2 EP 1561915A2 EP 05300063 A EP05300063 A EP 05300063A EP 05300063 A EP05300063 A EP 05300063A EP 1561915 A2 EP1561915 A2 EP 1561915A2
Authority
EP
European Patent Office
Prior art keywords
valve
electromagnet
coil
closed position
current
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
Application number
EP05300063A
Other languages
English (en)
French (fr)
Other versions
EP1561915A3 (de
EP1561915B1 (de
Inventor
Cédric Morin
Emmanuel Sedda
Christophe Baldi
Christophe Fageon
Raphael Penet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of EP1561915A2 publication Critical patent/EP1561915A2/de
Publication of EP1561915A3 publication Critical patent/EP1561915A3/de
Application granted granted Critical
Publication of EP1561915B1 publication Critical patent/EP1561915B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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

Definitions

  • the invention relates to a control device of the type electromechanical system for opening and closing intake valves and / or exhaust for a combustion engine, in particular a combustion engine internal.
  • valves In an internal combustion engine, the valves are open or closed at specific times in the operating cycle. In the most common motors, control of opening and closing is done mechanically depending on the position of the crankshaft. In recent years, electromechanical controls of valves have been developed which have the advantage of simplifying the implementation of the motor and to allow durations and moments of opening and closing valves that can be chosen at will to optimize engine performance.
  • Such electromechanical devices for controlling valves generally comprise a pallet, or magnetic plate cooperating with two electromagnets and two springs.
  • the pallet is generally secured to the end of a rod of which the other end cooperates with the tail of the valve.
  • the stem can also to be secured to the valve stem.
  • One of the electromagnets is planned to draw the pallet into a position such that the valve is in position closed. In this position, one spring is compressed and the other relaxed, the compressed spring being then used to push the pallet towards the other position, that for which the valve is in the open position.
  • the control from the closed position to the open position is performed by stopping the supply of the first electromagnet and by the subsequent feeding of the second electromagnet. In the open position, the first spring is relaxed and the second spring is compressed. This second spring pushes the pallet when ordering the position opening towards the closed position.
  • one and / or the other of the electromagnets is of the polarized type, that is to say that provides a permanent magnet in the magnetic circuit of one and / or the other electromagnets. In this case, maintaining the valve in an open and / or closed position requires no current.
  • the aim of the invention is to reduce the consumption of electrical energy and to improve the operational safety of such a control device of valve. It is also intended to increase the possibilities of order a valve actuator.
  • a valve actuator according to the invention is characterized in that the closing control electromagnet and the control electromagnet are of the polarized type and that the control of switching from one position to another is only defluxing current, that is to say a current which opposes the effect of blocking the pallet in the closed position or in the open position, following the movement of the pallet being then controlled solely by the springs.
  • the coil of the opening control electromagnet is faulty and if the pallet is in the closed position, the current is kept at zero in the coil of the closing control electromagnet so that the valve remains closed. If the coil of the control electromagnet opening is faulty and if the pallet is in the middle of its course, the coil of the closure control electromagnet is applied to current to position the valve in the closed position; then, the current in this last coil is reduced to zero.
  • the motor can be stopped with closed valve.
  • an engine stopped with closed valves provides braking or blocking when the vehicle is stopped.
  • the coils of the two electromagnets can be in series or in parallel or independent of each other.
  • the coils When the coils are in parallel, if one of the coils is in open circuit (because of a breakdown), it does not does not disturb the operation of the other coil.
  • the reels When the reels are in series, the short circuit of a coil does not prevent the operation of the other coil. It is preferred to mount the coils in parallel with the assembly coils in series because the disconnection of a coil is more likely than a short circuit.
  • the invention relates, in general, to a device for actuating valve for an internal combustion engine comprising a member of the type ferromagnetic connected to the valve and movable in a race for which at one end of this stroke the valve is in the closed position and at another end of the stroke, this valve is in position open, the control of the displacement being carried out using a first and second electromagnets and spring means (s) in such a way that the member is close to a first electromagnet for the closed position of the valve and near the second electromagnet for the position open of the valve, which is characterized in that, both electromagnets being of the polarized type with each a permanent magnet to hold the organ at the corresponding end of its stroke in the absence of current in the corresponding coil of this electromagnet, it comprises control means for passing the valve from its open position to its closed position or its closing position to its open position, comprising means to apply to the coil of the second electromagnet or to the coil of the first electromagnet, only a defluxing impulse opposing the
  • the device comprises a means for detecting the operation of the coils of electromagnets and a means of safety in case of failure of one of the coils, apply to the coil of the non-faulty electromagnet, a current allowing to position the valve in the closed position.
  • the security means may include means for, in case of coil failure of the second electromagnet, apply to the coil of the first electromagnet a current allowing the member to move towards this first electromagnet.
  • the invention also relates to an engine comprising a device actuating the type defined above.
  • FIG. 1 is a diagram of valve actuation device according to the invention.
  • Figures 2a and 2b are diagrams illustrating the operation of a valve actuator according to Figure 1.
  • FIG. 1 shows an embodiment of an actuator according to the invention in which there is provided, on the one hand, a control electromagnet of closure of the polarized type, with a magnet to block the valve in closed position in the absence of current in the coil electromagnet and, on the other hand, an electromagnet opening control, also of polarized type, whose magnet allows also, in the absence of current in the corresponding coil, keep the valve in the open position.
  • FIG. 1 there is shown a pallet or magnetic plate 10 integral with a rod 12 cooperating with a tail 14 of a valve 16.
  • the closure control electromagnet 18 comprises a circuit magnet 20, a permanent magnet 22 and a control coil 24.
  • the opening control electromagnet 26 has a circuit magnetic 28, a permanent magnet 30 and a control coil 32.
  • a spring 36 surrounds the valve stem 14. It is arranged in such a way it is compressed when the valve 16 is in the open position (towards the bottom in Figure 1) and relaxed in the case where the valve 16 is in position closing (upwards in the representation of Figure 1).
  • a spring 38 surrounds the rod 12 and is arranged in such a way that compressed when the valve is in the closed and relaxed position when the valve is in the open position.
  • the plate 10 When the actuator shown in FIG. 1 operates normally (without failure), the plate 10 is attracted to the magnetic circuit 20 thanks to the supply of the coil 24 and to the effect of the permanent magnet 22.
  • the current in the coil 24 is zero when the valve is in position closed because the magnet 22 is sufficient to hold the plate 10 against the circuit 20. In this position, the spring 36 is relaxed and the spring 38 is compressed.
  • the transition from the open position to the closed position is effected similarly by applying a defluxing current in the coil 32.
  • the valve can be maintained in closed position.
  • FIG. 2a shows the switching from the closed position to the open position of the valve.
  • Curve 50 represents the position of the valve. On part 52 of this curve 50, the valve is in the closed position and on the part 54, the valve is in the open position.
  • Curve 56 represents the variation of the speed valve or tray. On the bottom diagram, it is shown by the curve 58, the intensity of the current in the coil 24. This intensity is zero except for a pulse 60 during which the defluxing current. Moreover, the current in the coil 32 is kept at zero.
  • Figure 2b shows the switching from the open position to the position closed of the valve.
  • a current is applied to the coil 32 of defluxing which opposes the maintenance of the plate 10 against the circuit 28 and no current is applied to the coil 24.
  • the curve 62 represents the variation of the position of the valve from the open position 64 to the position closed 66.
  • Curve 68 represents the variation of the speed of the valve and on the bottom diagram of Figure 2b, the curve is represented 70, the variation of the current in the coil 32. The intensity of the current in this coil remains equal to zero except during the application of a pulse 72 of defluxing.
  • a current applied to the coil 32 allows to control the valve to the closed position.
  • the valve can be maintained in closed position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Magnetically Actuated Valves (AREA)
  • Spark Plugs (AREA)
EP05300063A 2004-02-03 2005-01-26 Elektromagnetischer Hubventilaktuator in einer Brennkraftmaschine Not-in-force EP1561915B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0450201 2004-02-03
FR0450201A FR2865763B1 (fr) 2004-02-03 2004-02-03 Actionneur electromecanique de soupape de moteur a combustion interne

Publications (3)

Publication Number Publication Date
EP1561915A2 true EP1561915A2 (de) 2005-08-10
EP1561915A3 EP1561915A3 (de) 2008-09-03
EP1561915B1 EP1561915B1 (de) 2011-01-05

Family

ID=34673944

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05300063A Not-in-force EP1561915B1 (de) 2004-02-03 2005-01-26 Elektromagnetischer Hubventilaktuator in einer Brennkraftmaschine

Country Status (6)

Country Link
US (1) US7111596B2 (de)
EP (1) EP1561915B1 (de)
AT (1) ATE494459T1 (de)
DE (1) DE602005025706D1 (de)
ES (1) ES2359250T3 (de)
FR (1) FR2865763B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2895594B1 (fr) * 2005-12-22 2008-03-07 Sagem Defense Securite Dispositif de deplacement lineaire d'un corps entre deux positions predeterminees
US8662071B2 (en) * 2011-02-14 2014-03-04 Bsh Home Appliances Corporation Household gas appliance with a magnetically controlled gas supply system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1047028A (ja) * 1996-07-31 1998-02-17 Suzuki Motor Corp 電磁弁型エンジンの制御装置
EP1010866A2 (de) * 1998-12-07 2000-06-21 Toyota Jidosha Kabushiki Kaisha Elektromagnetischer Ventilbetätiger
EP1174595A1 (de) * 2000-07-18 2002-01-23 Peugeot Citroen Automobiles SA Ventilaktuator in einer Brennkraftmaschine
US20030080306A1 (en) * 2001-10-26 2003-05-01 Toyota Jidosha Kabushiki Kaisha Method of controlling current applied to electromagnetically driven valve and control system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4829947A (en) * 1987-08-12 1989-05-16 General Motors Corporation Variable lift operation of bistable electromechanical poppet valve actuator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1047028A (ja) * 1996-07-31 1998-02-17 Suzuki Motor Corp 電磁弁型エンジンの制御装置
EP1010866A2 (de) * 1998-12-07 2000-06-21 Toyota Jidosha Kabushiki Kaisha Elektromagnetischer Ventilbetätiger
EP1174595A1 (de) * 2000-07-18 2002-01-23 Peugeot Citroen Automobiles SA Ventilaktuator in einer Brennkraftmaschine
US20030080306A1 (en) * 2001-10-26 2003-05-01 Toyota Jidosha Kabushiki Kaisha Method of controlling current applied to electromagnetically driven valve and control system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 06, 30 avril 1998 (1998-04-30) & JP 10 047028 A (SUZUKI MOTOR CORP), 17 février 1998 (1998-02-17) *

Also Published As

Publication number Publication date
US7111596B2 (en) 2006-09-26
FR2865763B1 (fr) 2010-08-20
US20050199198A1 (en) 2005-09-15
FR2865763A1 (fr) 2005-08-05
ES2359250T3 (es) 2011-05-19
EP1561915A3 (de) 2008-09-03
DE602005025706D1 (de) 2011-02-17
EP1561915B1 (de) 2011-01-05
ATE494459T1 (de) 2011-01-15

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