EP0229793B1 - Verfahren zum betreiben einer brennkraftmaschine - Google Patents

Verfahren zum betreiben einer brennkraftmaschine Download PDF

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Publication number
EP0229793B1
EP0229793B1 EP86904141A EP86904141A EP0229793B1 EP 0229793 B1 EP0229793 B1 EP 0229793B1 EP 86904141 A EP86904141 A EP 86904141A EP 86904141 A EP86904141 A EP 86904141A EP 0229793 B1 EP0229793 B1 EP 0229793B1
Authority
EP
European Patent Office
Prior art keywords
coil
current
time
gas exchange
computer
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
EP86904141A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0229793A1 (de
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
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0229793A1 publication Critical patent/EP0229793A1/de
Application granted granted Critical
Publication of EP0229793B1 publication Critical patent/EP0229793B1/de
Expired legal-status Critical Current

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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 method for operating an internal combustion engine according to the preamble of claim 1.
  • the object of the invention is to provide a method with which a generic internal combustion engine can be operated with the highest possible efficiency.
  • crankshaft angle-controlled system is characterized by good accuracy; it is superior to the time-controlled ignition systems which are simpler in structure.
  • the time-controlled systems determine the respective crankshaft angle position on the basis of a time base and the speed.
  • crankshaft angle-controlled system When transferring a crankshaft angle-controlled system to the arrangement for controlling the gas exchange valves in a generic internal combustion engine, however, it turns out that the accuracy inherent in the crankshaft angle-controlled system is not readily usable for compliance with the opening and closing times of the gas exchange valves.
  • a switch is made from a crankshaft angle-related system for determining opening and closing times for the gas exchange valves to a time-based one.
  • crankshaft angle information is evaluated at the same time in order to determine speed changes.
  • the figure shows the time course of the current flowing through the coil, in particular during the time of the position change of the gas exchange valve.
  • the armature of the gas exchange valve is in the vicinity of a coil through which current flows, the current flow through this coil exerting holding force on the armature of the gas exchange valve. If the current flow through the coil is switched off, the holding force breaks down.
  • a spring system acts on the gas exchange valve and accelerates it towards the other rest position. As described in DE-A-30 24 109, the central position of this spring system is between the two rest positions, so that the spring system acts on the gas exchange valve in such a way that it is moved approximately beyond its rest position into the other working position.
  • the coil assigned to the other working position is excited so that the armature, when it comes into the vicinity of the coil core, is caught by the latter and is held in its other working position by the current flow through the coil.
  • the current curve labeled coil 1 represents the current curve in the coil that is responsible for the closed position of the gas exchange valve. If the gas exchange valve is to open, the current through the coil 1 is switched off at time t, so that the armature is pressed into the open position of the gas exchange valve by the spring force.
  • the computer Since the computer has calculated the times beforehand, the computer knows at the same time when the armature of the gas exchange valve will hit the pole faces of the coil core, which serves to hold the gas exchange valve in the open position. In order to have built up a sufficiently high current when the armature strikes the pole faces, which ensures sufficient force to catch the armature, the current in the coil 2 is switched on in good time beforehand at a time t o . At time t 2 , the armature strikes the pole face of coil 2, which can be seen in the current profile by a corresponding small incision.
  • the time period between the times t and t 2 that is to say the flight phase of the gas exchange valve, in which the armature comes from the contact of one pole face to the other pole face, regardless of the crankshaft angle and regardless of the speed.
  • This time period t 2 -t l depends on the sticking time of the armature on the pole face before it is released and on the pure flight time, which is essentially influenced by the force of the springs which act on the gas exchange valve.
  • the computer is now switched over to a time base in order to, starting at time t 1 , at a time t 3 is slightly later than the expected time of impact, to switch off the capture current in coil 2, so that the current passing through the coil 2, due to a free-running circuit, gradually decreases again, in order to then go into a clocked hold phase.
  • the period between t 2 and t 3 is a certain safety space to guarantee that the gas exchange valve was actually caught by the coil 2 and the gas exchange valve is accordingly kept in its full open position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
EP86904141A 1985-07-05 1986-06-25 Verfahren zum betreiben einer brennkraftmaschine Expired EP0229793B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3524025 1985-07-05
DE19853524025 DE3524025A1 (de) 1985-07-05 1985-07-05 Verfahren zum betreiben einer brennkraftmaschine

Publications (2)

Publication Number Publication Date
EP0229793A1 EP0229793A1 (de) 1987-07-29
EP0229793B1 true EP0229793B1 (de) 1988-08-17

Family

ID=6275010

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86904141A Expired EP0229793B1 (de) 1985-07-05 1986-06-25 Verfahren zum betreiben einer brennkraftmaschine

Country Status (4)

Country Link
EP (1) EP0229793B1 (ja)
JP (1) JPH07111127B2 (ja)
DE (2) DE3524025A1 (ja)
WO (1) WO1987000240A1 (ja)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3765744D1 (de) * 1986-10-13 1990-11-29 Audi Ag Verfahren zum betrieb einer brennkraftmaschine.
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
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
DE3923477A1 (de) * 1989-07-15 1991-01-24 Fev Motorentech Gmbh & Co Kg Verfahren zur steuerung der ankerbewegung von schaltmagneten
JPH04259614A (ja) * 1991-02-12 1992-09-16 Hideo Yoshikawa 内燃機関の動弁装置
DE19741570A1 (de) * 1997-09-20 1999-03-25 Heinz Leiber Elektromagnetische Stelleinrichtung
DE19756342C2 (de) 1997-12-18 2003-02-13 Conti Temic Microelectronic Verfahren zur Steuerung einer Brennkraftmaschine
JP3487216B2 (ja) 1999-05-11 2004-01-13 トヨタ自動車株式会社 電磁駆動弁
US6405693B2 (en) * 2000-02-28 2002-06-18 Toyota Jidosha Kabushiki Kaisha Internal combustion engine and method for controlling valve of internal combustion engine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1471861A (en) * 1921-09-07 1923-10-23 Perrault Oscar Louis Valve-actuating mechanism for internal-combustion engines
DE2343905C2 (de) * 1973-08-31 1982-10-07 Daimler-Benz Ag, 7000 Stuttgart Vorrichtung zur digital-elektronischen Steuerung der Einlaß-, Auslaß- und Einspritzventile sowie der Zündung bei Brennkraftmaschinen
JPS5952111B2 (ja) * 1976-04-09 1984-12-18 キユーピー株式会社 定量充填装置
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
DE3024109A1 (de) * 1980-06-27 1982-01-21 Pischinger, Franz, Prof. Dipl.-Ing. Dr.Techn., 5100 Aachen Elektromagnetisch arbeitende stelleinrichtung
JPS59162312A (ja) * 1983-03-08 1984-09-13 Mikuni Kogyo Co Ltd 電子制御エンジン

Also Published As

Publication number Publication date
JPH07111127B2 (ja) 1995-11-29
JPS62503182A (ja) 1987-12-17
DE3660558D1 (en) 1988-09-22
EP0229793A1 (de) 1987-07-29
DE3524025A1 (de) 1987-01-15
WO1987000240A1 (en) 1987-01-15

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