EP0065075A1 - Capteur pour détecter des marques rapportées sur une piste se déplaçant par rapport audit capteur - Google Patents

Capteur pour détecter des marques rapportées sur une piste se déplaçant par rapport audit capteur Download PDF

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Publication number
EP0065075A1
EP0065075A1 EP82101543A EP82101543A EP0065075A1 EP 0065075 A1 EP0065075 A1 EP 0065075A1 EP 82101543 A EP82101543 A EP 82101543A EP 82101543 A EP82101543 A EP 82101543A EP 0065075 A1 EP0065075 A1 EP 0065075A1
Authority
EP
European Patent Office
Prior art keywords
marks
path
flywheel
ring gear
reference mark
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.)
Withdrawn
Application number
EP82101543A
Other languages
German (de)
English (en)
Inventor
Kurt Donhauser
H.-J. Sellner
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.)
Audi AG
Original Assignee
Audi NSU Auto Union AG
Audi AG
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 Audi NSU Auto Union AG, Audi AG filed Critical Audi NSU Auto Union AG
Publication of EP0065075A1 publication Critical patent/EP0065075A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P7/00—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices
    • F02P7/06—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices of circuit-makers or -breakers, or pick-up devices adapted to sense particular points of the timing cycle
    • F02P7/067—Electromagnetic pick-up devices, e.g. providing induced current in a coil
    • F02P7/0675—Electromagnetic pick-up devices, e.g. providing induced current in a coil with variable reluctance, e.g. depending on the shape of a tooth

Definitions

  • the invention relates to a signal transmitter for scanning web marks attached to a component moving relative to the signal transmitter and at least one reference mark according to the preamble of the main claim.
  • the problem often arises of knowing the speed of a component and its passage through a reference position.
  • the speed of the internal combustion engine and the passage of the crankshaft must be known by a reference position in order to control the ignition timing precisely.
  • Known ignition systems use generic signal generators for this purpose, which scan a flywheel of the internal combustion engine.
  • a first core with a coil thereon is assigned to a starter ring gear attached to the flywheel. The scanning of the teeth provides a speed signal.
  • a second core with a coil thereon is assigned a reference mark formed on the flywheel, for example a hole in the flywheel, and supplies a reference signal which indicates a reference position of the crankshaft.
  • the known system thus works with two separate coils and associated cores, which means a relatively large structural effort.
  • An ignition system is known from the magazine "Electronics", 1977, number 9, page 64, which works with a single signal transmitter which scans the starter ring gear of the flywheel.
  • One tooth of the starter ring gear is slotted and thus forms a reference mark.
  • the signal transmitter used to scan this flywheel in which the path of movement of the path marks formed by the individual teeth and the slotted tooth coincide, contains an oscillator with an exciter and measuring winding.
  • the one slotted tooth causes a different phase shift between the voltages in both windings, which is recognized in a downstream electronics.
  • the signal generator is relatively expensive because of the oscillator contained in it.
  • the invention is based on the object of developing a generic signal transmitter in such a way that, with a simple structure, reliable detection of the signals caused by the web marks and of the signal caused by the at least one reference mark is possible.
  • a single core is used, which ends with an end face from the path of movement of the path marks and with the other end face in front of the path of movement of the at least one reference mark.
  • the end faces can be precisely aligned to the different trajectories, so that each mark causes a well-defined flux change in the core, which is picked up by the coil surrounding the core and is used for signal generation. This ensures a safe separation of the from the Coil generated signals in signals based on the web mark and the reference mark signals possible.
  • the claim 2 characterizes an embodiment of the invention for use for ignition systems in motor vehicles.
  • Claim 3 characterizes an advantageous embodiment of a flywheel that can be used for the signal transmitter according to the invention.
  • Claim 5 characterizes a further embodiment of a flywheel that can be used with the signal transmitter according to the invention.
  • the invention can be used for all types of applications in which different types of marks have to be scanned which are attached to a component which moves relative to a signal transmitter.
  • a spark ignition internal combustion engine designated overall by 5 and known in terms of its construction, has a flywheel 7, which is provided with a starter ring gear 9.
  • a starter 11 is attached to the internal combustion engine 5, and its pinion 13 meshes with the starter ring gear 9 in a manner known per se when starting.
  • a signal transmitter 17 is provided which is connected to an ignition device 19.
  • the igniter 19 is further connected to lines 21 and 23, which are connected to sensors known per se for measuring the negative pressure in an intake manifold (not shown) of the internal combustion engine 5 and for measuring the temperature of the internal combustion engine 5.
  • the igniter 19 generates, in a manner known per se, from signals which correspond to a reference position of the internal combustion engine, the speed of the internal combustion engine and the negative pressure in the intake manifold and the temperature specify an ignition pulse, which are supplied to the individual spark plugs of the internal combustion engine via a distributor 25 in a manner known per se and therefore not explained in detail.
  • FIG. 2 shows details of the flywheel 7 and the signal generator 17 from FIG. 1.
  • a further tooth 27 is then formed on the flywheel 7 in the axial extension of a tooth of the starter ring gear 9.
  • the individual teeth of the starter ring gear 9 form path marks, whereas the individual tooth 27 forms a reference mark.
  • a generally U-shaped core 29 made of magnetizable or permanently magnetic material is arranged on the outer periphery of the flywheel 7 and carries a coil 31.
  • One of the end faces 33 is arranged at a small radial distance from the starter ring gear 9.
  • the other end face 35 is located at a slight radial distance from the path of movement of the tooth 27 which rotates together with the flywheel 7 and forms the reference mark.
  • the force flow through the core 29 changes (caused by its permanent magnetism or a direct current application to the coil) 31) corresponding to the gap sizes between the end faces 33 and 35 and the flywheel 7 which differ with the teeth.
  • FIG. 3 differs from FIG. 2 in that the reference mark on the flywheel 7 is not formed by an additional tooth, but by a recess 39 which is formed axially next to the starter ring gear 9 on the flywheel 7.
  • this recess 39 is located axially next to a space between two teeth of the starter ring gear 9.
  • the core 29 is advantageously designed such that its leg with the end face 35 is slightly longer than the leg with the end face 33, so that the smallest possible gaps between the Core 29 and the flywheel 7 exist.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Linear Or Angular Velocity Measurement And Their Indicating Devices (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
EP82101543A 1981-05-15 1982-02-27 Capteur pour détecter des marques rapportées sur une piste se déplaçant par rapport audit capteur Withdrawn EP0065075A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813119414 DE3119414C2 (de) 1981-05-15 1981-05-15 Elektromagnetischer Signalgeber zur Messung der Winkellage eines sich drehenden Bauteils
DE3119414 1981-05-15

Publications (1)

Publication Number Publication Date
EP0065075A1 true EP0065075A1 (fr) 1982-11-24

Family

ID=6132430

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82101543A Withdrawn EP0065075A1 (fr) 1981-05-15 1982-02-27 Capteur pour détecter des marques rapportées sur une piste se déplaçant par rapport audit capteur

Country Status (3)

Country Link
EP (1) EP0065075A1 (fr)
JP (1) JPS57191511A (fr)
DE (1) DE3119414C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0080056A2 (fr) * 1981-11-20 1983-06-01 Vacuumschmelze GmbH Capteur électromagnétique de déplacement à mesures multiples
DE4335805A1 (de) * 1993-10-20 1995-04-27 Bayerische Motoren Werke Ag Schaltanordnung zur Erfassung zumindest einer einer Drehwinkelposition einer Welle zugeordneten Markierung

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3326477A1 (de) * 1983-07-22 1985-01-31 Telefunken electronic GmbH, 7100 Heilbronn Anordnung zur bestimmung der drehzahl, der drehrichtung und/oder des drehwinkels eines gegenstandes
JPS6056510U (ja) * 1983-09-24 1985-04-20 東陶機器株式会社 生素地の孔明け機
JPS61120919A (ja) * 1984-11-17 1986-06-09 Nissan Motor Co Ltd クランク角度検出器
US4851752A (en) * 1987-03-26 1989-07-25 Yamaha Corporation Magnetic encoder and a method for producing the same
ES2030254T3 (es) * 1988-11-02 1992-10-16 Daimler-Benz Aktiengesellschaft Sensor del angulo de direccion de un vehiculo automovil.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1602827A (fr) * 1968-07-04 1971-02-01
US3930201A (en) * 1973-11-15 1975-12-30 Bosch Gmbh Robert Pulse source to provide a pulse train representative of movement of a shaft and a reference pulse representative of a reference position
DE2627436A1 (de) * 1975-06-20 1976-12-23 Matsushita Electric Ind Co Ltd Umdrehungszaehler
FR2359990A1 (fr) * 1976-07-27 1978-02-24 Magneti Marelli Spa Appareil pour l'avance a l'allumage de moteurs a combustion interne
FR2365105A1 (fr) * 1976-09-16 1978-04-14 Bosch Gmbh Robert Dispositif pour determiner la position et le nombre de tours d'un arbre en rotation
DE2949260A1 (de) * 1979-12-07 1981-06-11 Volkswagenwerk Ag, 3180 Wolfsburg Vorrichtung zur gewinnung von signalen fuer den betrieb einer maschine, insbesondere fuer die zuendung einer fremdgezuendeten brennkraftmaschine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1357125A (fr) * 1963-02-22 1964-04-03 Novi Pb Sa Capteur perfectionné pour commande du dispositif de coupure d'un allumage à haute tension
DE2212813B2 (de) * 1972-03-16 1974-10-31 Siemens Ag, 1000 Berlin Und 8000 Muenchen Elektronische Zündwinkelmeßeinrichtung für eine Brennkraftmaschine
DE2244321A1 (de) * 1972-09-09 1974-03-21 Gehap Gmbh & Co Kg Kontaktlose zuendeinrichtung fuer brennkraftmaschinen
DE2352268C3 (de) * 1973-10-18 1979-10-18 Mathias Prof. Dipl.-Ing. 8630 Coburg Ott Zündvorrichtung für Brennkraftmaschinen
US4081995A (en) * 1977-02-22 1978-04-04 Rockwell International Corporation Apparatus and method for extrapolating the angular position of a rotating body
GB1566396A (en) * 1978-03-29 1980-04-30 Hughes Microelectronics Ltd Electrical displacement transducer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1602827A (fr) * 1968-07-04 1971-02-01
US3930201A (en) * 1973-11-15 1975-12-30 Bosch Gmbh Robert Pulse source to provide a pulse train representative of movement of a shaft and a reference pulse representative of a reference position
DE2627436A1 (de) * 1975-06-20 1976-12-23 Matsushita Electric Ind Co Ltd Umdrehungszaehler
FR2359990A1 (fr) * 1976-07-27 1978-02-24 Magneti Marelli Spa Appareil pour l'avance a l'allumage de moteurs a combustion interne
FR2365105A1 (fr) * 1976-09-16 1978-04-14 Bosch Gmbh Robert Dispositif pour determiner la position et le nombre de tours d'un arbre en rotation
DE2949260A1 (de) * 1979-12-07 1981-06-11 Volkswagenwerk Ag, 3180 Wolfsburg Vorrichtung zur gewinnung von signalen fuer den betrieb einer maschine, insbesondere fuer die zuendung einer fremdgezuendeten brennkraftmaschine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0080056A2 (fr) * 1981-11-20 1983-06-01 Vacuumschmelze GmbH Capteur électromagnétique de déplacement à mesures multiples
EP0080056A3 (fr) * 1981-11-20 1986-04-02 Vacuumschmelze GmbH Capteur électromagnétique de déplacement à mesures multiples
DE4335805A1 (de) * 1993-10-20 1995-04-27 Bayerische Motoren Werke Ag Schaltanordnung zur Erfassung zumindest einer einer Drehwinkelposition einer Welle zugeordneten Markierung

Also Published As

Publication number Publication date
DE3119414C2 (de) 1983-04-07
DE3119414A1 (de) 1982-12-09
JPS57191511A (en) 1982-11-25

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Withdrawal date: 19830426

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SELLNER, H.-J.

Inventor name: DONHAUSER, KURT