EP0229792B1 - Procede d'actionnement d'un moteur a combustion interne - Google Patents

Procede d'actionnement d'un moteur a combustion interne Download PDF

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Publication number
EP0229792B1
EP0229792B1 EP86904140A EP86904140A EP0229792B1 EP 0229792 B1 EP0229792 B1 EP 0229792B1 EP 86904140 A EP86904140 A EP 86904140A EP 86904140 A EP86904140 A EP 86904140A EP 0229792 B1 EP0229792 B1 EP 0229792B1
Authority
EP
European Patent Office
Prior art keywords
valve
current
combustion engine
internal combustion
flow
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.)
Expired
Application number
EP86904140A
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German (de)
English (en)
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EP0229792A1 (fr
Inventor
Andreas Fleck
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.)
Cessione audi AG
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0229792A1 publication Critical patent/EP0229792A1/fr
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Publication of EP0229792B1 publication Critical patent/EP0229792B1/fr
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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder

Definitions

  • the invention relates to a method for operating an internal combustion engine according to the preamble of claim 1.
  • Such an internal combustion engine is known for example from DE-A-30 24 109.
  • the gas exchange valve (s) of the internal combustion engine are held in their closed position by an electromagnet being excited and attracting an armature plate.
  • a spring system presses in the opening direction of the valve, so that when the electromagnets are switched off, the spring system takes effect and the valve opens.
  • the electromagnet is switched on, however, the force of the electromagnet is large enough to hold the armature plate in the closed position of the valve despite being acted upon by the spring system.
  • US-A-1 471 861 describes a system in which a gas exchange valve is held in its open or closed position by an electromagnet. This is to save electricity compared to the prior art known on the date of publication of this patent, in which a single electromagnet worked against a mechanical spring.
  • the invention has for its object to operate an internal combustion engine equipped with a generic gas exchange valve such that the energy expenditure is lower.
  • the valve is intended to take advantage of the fact that a high internal pressure arises during the combustion process in the cylinder interior of the internal combustion engine, which pressure also acts on the valve disk. As a result, the valve is subjected to a force which additionally pushes it into its valve seat and thus in the closing direction.
  • the current flow through the electromagnet is controlled in a preferred embodiment, the degree of current flow being dependent on the internal cylinder pressure.
  • the internal cylinder pressure is difficult to measure as a direct measured variable, but empirical values are available which make statements about the time course of the internal cylinder pressure. It is therefore advisable, according to a preferred embodiment, to control the current flow through the electromagnet in a time-dependent manner, the magnitude of the current flow resulting from the empirically determined course of the internal pressure in the cylinder during a combustion process or compression process.
  • the ignition timing is a suitable parameter for synchronizing the time course of the current flow through the electromagnet, since the ignition pressure of the mixture inside the cylinder increases the internal pressure sharply with the ignition timing.
  • the ignition point thus defines the starting point for the chronological sequence of the cylinder internal pressure.
  • the method according to the invention can be used in an internal combustion engine as disclosed in DE-A-30 24 109.
  • the following is essential for the valve arrangement:
  • a cylinder head 10 closes the cylinder interior 12 at the top, in which the combustion processes, as take place in an internal combustion engine, take place in a known manner.
  • a valve 14 is provided, which is shown in FIG. 1 in the open position, that is to say lifted off the valve seat.
  • the valve 14 carries on its valve stem 16 an armature plate 18 which can oscillate back and forth between the pole faces of a magnet 20 and a magnet 22 in the axial direction of the valve stem 16.
  • the valve 14 is closed. However, the valve 14 is not moved by one attraction on the pole face of the magnet to the pole face of the other magnet by magnetic attraction, but a spring system 24, 25, 26, 27 is provided, the springs 24 and 25 being the anchor plate 18 push away from the contact position on the pole face of the magnet 22, while the springs 26 and 27 press the anchor plate 18 away from the contact position on the pole face of the magnet 20.
  • the zero point of this spring system is such that when the magnets 20 and 22 are not excited, the armature plate 18 is located approximately in the middle between the pole faces of the magnets 20 and 22.
  • the magnet 20 is thus excited to hold the armature plate 18 in contact with the pole face of the magnet 20, although the armature plate 18 is acted upon by the force of the spring 26 and 27, which the Intend to push anchor plate 18 away from the pole face.
  • the armature plate 18 receives an acceleration by the springs 26 and 27, which is braked after contact with the springs 24 and 25, but extends so far that the armature plate 18 at least almost up to the plant the pole face of the magnet 22 arrives.
  • the magnet 22 is now energized at this time, the armature plate 18 is held by the pole faces of the magnet 22, the valve 14 closes.
  • the size of the current must be such that the force of the springs 24 and 25 is compensated for.
  • Fig. 2 the working diagram of a four-stroke internal combustion engine is shown, in a known manner in the cycle.
  • An ignition-ready mixture is sucked in, in cycle 11, which is between 180 ° and 360 ° crankshaft angle, that is between bottom dead center and top dead center, the mixture is compressed to be ignited shortly before reaching top dead center.
  • the internal pressure in the cylinder rises sharply during work cycle III, a considerable pressure is exerted on the piston head which drives the internal combustion engine.
  • the internal pressure reaches up to 40 bar; in diesel internal combustion engines it can be significantly higher, for example three times the value.
  • the burned mixture is expelled in work cycle IV.
  • the current flow will not be controlled as a function of the absolute value of the crankshaft angle, but rather the control will try to be synchronized with the ignition point.
  • the reduction of the holding current through the coil of the electromagnet 22 can start at a certain point in time after the ignition point, best expressed in degrees crankshaft angle, since this measure is independent of the speed and, depending on the engine properties, can then be maintained for about 100 ° crankshaft angle. It is possible to control the course of the current over time during these 100 ° crankshaft angles, or only to lower it to a lower value.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

Le procédé ci-décrit permet d'actionner un moteur à combustion interne à l'aide de soupapes à deux voies de gaz, qui sont maintenues en position d'ouverture ou de fermeture par la force de maintien d'aimants. Lorsque la pression intérieure du cylindre augmente fortement durant la phase de combustion, on réduit la force de maintien, afin de maintenir la soupape dans sa position de fermeture.

Claims (4)

1. Procédé d'actionnement d'un moteur à combustion interne comportant au moins une soupape à gaz à mouvement alternatif qui est maintenue dans sa position de fermeture par un aimant excité par un flux de courant, caractérisé en ce que le flux de courant à travers l'électroaimant (22) est commandé en fonction de la pression interne du cylindre, de telle manière que le flux de courant soit réduit lorsque la pression interne du cylindre dépasse une valeur prédéfinie.
2. Procédé selon la revendication 1, caractérisé en ce que le flux de courant présente une variation prédéfinissable dans le temps pendant le processus de combustion dans le cylindre.
3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le flux de courant est coupé lorsque la force qui agit sur la soupape (14) sous l'effet de la pression interne du cylindre dépasse la force antagoniste.
4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la commande du flux de courant est synchronisée avec l'instant d'allumage.
EP86904140A 1985-07-05 1986-06-25 Procede d'actionnement d'un moteur a combustion interne Expired EP0229792B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853524024 DE3524024A1 (de) 1985-07-05 1985-07-05 Verfahren zum betreiben einer brennkraftmaschine
DE3524024 1985-07-05

Publications (2)

Publication Number Publication Date
EP0229792A1 EP0229792A1 (fr) 1987-07-29
EP0229792B1 true EP0229792B1 (fr) 1988-08-17

Family

ID=6275009

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86904140A Expired EP0229792B1 (fr) 1985-07-05 1986-06-25 Procede d'actionnement d'un moteur a combustion interne

Country Status (6)

Country Link
US (1) US4846120A (fr)
EP (1) EP0229792B1 (fr)
JP (1) JPS62502056A (fr)
DE (2) DE3524024A1 (fr)
ES (1) ES8706898A1 (fr)
WO (1) WO1987000239A1 (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3826978A1 (de) * 1988-08-09 1990-02-15 Meyer Hans Wilhelm Elektromagnetisch betaetigbare stellvorrichtung
JPH0617642B2 (ja) * 1988-10-31 1994-03-09 いすゞ自動車株式会社 電磁力駆動バルブ制御装置
JPH0635812B2 (ja) * 1988-10-31 1994-05-11 いすゞ自動車株式会社 電磁力駆動バルブ制御装置
JP2688953B2 (ja) * 1988-11-11 1997-12-10 株式会社いすゞセラミックス研究所 電磁力駆動バルブ制御装置
JPH0621531B2 (ja) * 1988-12-28 1994-03-23 いすゞ自動車株式会社 電磁力駆動バルブの制御装置
JP2652802B2 (ja) * 1988-12-28 1997-09-10 株式会社いすゞセラミックス研究所 電磁力バルブ駆動装置
JPH03164537A (ja) * 1989-11-21 1991-07-16 Mitsubishi Electric Corp 内燃機関のバルブタイミング制御装置
US5074259A (en) * 1990-05-09 1991-12-24 Pavo Pusic Electrically operated cylinder valve
US5636601A (en) * 1994-06-15 1997-06-10 Honda Giken Kogyo Kabushiki Kaisha Energization control method, and electromagnetic control system in electromagnetic driving device
JP3315275B2 (ja) * 1994-11-04 2002-08-19 本田技研工業株式会社 対向二ソレノイド型電磁弁の制御装置
KR100248332B1 (ko) * 1995-12-23 2000-04-01 정몽규 차량의 흡/배기밸브용 개폐장치
DE59800893D1 (de) * 1997-03-24 2001-07-26 Lsp Innovative Automotive Sys Verbrennungsmotor
JP3695118B2 (ja) * 1998-01-12 2005-09-14 トヨタ自動車株式会社 電磁駆動弁の制御装置
DE19813395A1 (de) * 1998-03-26 1999-09-30 Lsp Innovative Automotive Sys Elektromagnetische Stelleinrichtung
JP4047468B2 (ja) * 1998-11-26 2008-02-13 本田技研工業株式会社 内燃機関の電磁石駆動弁
GB0227668D0 (en) * 2002-11-27 2003-01-08 Ricardo Consulting Eng Improved engine management
US7004120B2 (en) * 2003-05-09 2006-02-28 Warren James C Opposed piston engine
US10344682B1 (en) 2017-01-13 2019-07-09 Andre H Vandenberg Engine valve shaft with flow passages for intake and exhaust control

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1096955A (en) * 1914-05-19 Darrel D Rock Valve-operating mechanism.
US1038598A (en) * 1911-07-29 1912-09-17 Orlando E Kellum Valve mechanism for automobile-engines and the like.
US1471861A (en) * 1921-09-07 1923-10-23 Perrault Oscar Louis Valve-actuating mechanism for internal-combustion engines
GB301444A (en) * 1927-08-31 1928-11-30 Francis Norwood Bland Improvements in or connected with valve mechanism of internal combustion engines
GB1391955A (en) * 1972-07-12 1975-04-23 British Leyland Austin Morris Actuating internal combustion engine poppet valves
US3853102A (en) * 1973-05-31 1974-12-10 L Harvill Magnetic valve train for combustion engines
DE2630512A1 (de) * 1976-07-07 1978-01-12 Daimler Benz Ag Ventilsteuerung, insbesondere fuer brennkraftmaschinen
DE2828678A1 (de) * 1978-06-30 1980-04-17 Bosch Gmbh Robert Verfahren und einrichtung zum betrieb eines elektromagnetischen verbrauchers, insbesondere eines einspritzventils in brennkraftmaschinen
DE3307070C2 (de) * 1983-03-01 1985-11-28 FEV Forschungsgesellschaft für Energietechnik und Verbrennungsmotoren mbH, 5100 Aachen Stelleinrichtung für ein zwischen zwei Endstellungen verstellbares Schaltelement
DE3307683C1 (de) * 1983-03-04 1984-07-26 Klöckner, Wolfgang, Dr., 8033 Krailling Verfahren zum Aktivieren einer elektromagnetisch arbeitenden Stelleinrichtung sowie Vorrichtung zum Durchfuehren des Verfahrens
US4515343A (en) * 1983-03-28 1985-05-07 Fev Forschungsgesellschaft fur Energietechnik und ver Brennungsmotoren mbH Arrangement for electromagnetically operated actuators

Also Published As

Publication number Publication date
DE3660557D1 (en) 1988-09-22
DE3524024A1 (de) 1987-01-15
ES556519A0 (es) 1987-07-16
US4846120A (en) 1989-07-11
JPH0379528B2 (fr) 1991-12-19
WO1987000239A1 (fr) 1987-01-15
EP0229792A1 (fr) 1987-07-29
JPS62502056A (ja) 1987-08-13
ES8706898A1 (es) 1987-07-16

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