EP1549913A1 - Roue de detection - Google Patents

Roue de detection

Info

Publication number
EP1549913A1
EP1549913A1 EP03753440A EP03753440A EP1549913A1 EP 1549913 A1 EP1549913 A1 EP 1549913A1 EP 03753440 A EP03753440 A EP 03753440A EP 03753440 A EP03753440 A EP 03753440A EP 1549913 A1 EP1549913 A1 EP 1549913A1
Authority
EP
European Patent Office
Prior art keywords
teeth
crankshaft
tooth
widths
encoder wheel
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Withdrawn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
EP03753440A
Other languages
German (de)
English (en)
Inventor
Rainer Falsett
Roland Fischer
Reinhard Seyer
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.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler 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 DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP1549913A1 publication Critical patent/EP1549913A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
    • G01D5/249—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains using pulse code
    • G01D5/2492—Pulse stream
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
    • G01D5/246—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains by varying the duration of individual pulses

Definitions

  • the invention relates to a sender wheel for a device for measuring the angle of rotation of a crankshaft according to the closer defined in the preamble of claim 1.
  • the invention further relates to a device for measuring the angle of rotation of a crankshaft according to claim 5.
  • the evenly distributed over the circumference of the encoder gear teeth provide the information regarding the angular velocity and the rotational speed of the crankshaft, by the time interval of arrival of the successive signals of the respective leading edge of the individual teeth.
  • two or more teeth are omitted, so that the pulse sensor detects this gap during the rotation of the sensor wheel and transmits it to the control unit. passes. This is thus able to determine from the determined zero position and the angular velocity measured as described above at any time, the angular position of the crankshaft. This is necessary to maintain the correct timing of the fuel injection into the combustion chambers and the correct ignition timing.
  • Another advantage of the encoder wheel according to the invention is that known or already existing pulse sensors can continue to be used.
  • the respective angular position of the crankshaft can be determined precisely by determining the width of three successive teeth.
  • Fig. 1 is a schematic representation of an apparatus according to the invention for measuring the angle of rotation of a crankshaft
  • Fig. 2 is an inventive encoder wheel.
  • An engine 1 shown very schematically in FIG. 1 has a crankshaft 2 on which connecting rods and pistons, not shown in a known manner, are mounted.
  • the pistons perform in a likewise known manner in corresponding cylinders of the internal combustion engine 1 due to the rotation of the crankshaft 2 an oscillatory movement.
  • the internal combustion engine 1 is further provided with a device 3 for measuring the angle of rotation and optionally the rotational speed of the crankshaft 2, which has a fixedly mounted on the internal combustion engine 1 pulse sensor 4 and a fixed to the crankshaft 2 and thus the rotation-performing donor wheel 5.
  • the pulse sensor 4 which may be of a type known per se, receives signals from the encoder wheel 5 and forwards them to a control unit 6 in order to calculate the rotational speed and / or the rotational angle of the crankshaft 2 therefrom. These calculations are to comply with the correct injection and ignition of the internal combustion engine 1 required.
  • the angular velocity of the encoder wheel 5 and thus the rotational speed of the crankshaft 2 can be determined in a simple and known manner by a front edge 9 of a respective tooth 7 passing through the pulse sensor 4 be determined.
  • the teeth 7 have different widths, which will be explained in more detail below with reference to an example.
  • width of each tooth 1 is understood to mean the angular distance of the front edge 9 to a trailing edge 10 of the respective tooth 7.
  • Fig. 2 the various configuration of the teeth 7 is shown only over a certain part of the circumference of the encoder wheel 5.
  • the width of the teeth 7 varies in four stages, in the present case in the stages of 1.2 °, 2.4 °, 3.6 ° and 4.8 °.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

L'invention concerne une roue de détection conçue pour un dispositif destiné à mesurer la vitesse de rotation et/ou l'angle de rotation d'un vilebrequin d'un moteur à combustion interne. Cette roue de détection comporte une pluralité de dents disposées circonférentiellement et comprenant respectivement une arête avant ainsi qu'une arête arrière qui définissent la largeur desdites dents, ainsi que des interstices se trouvant entre ces dents. Les arêtes avant et arrière respectives des dents sont espacées les unes des autres d'une distance angulaire sensiblement identique. Un nombre limité de largeurs de dent différentes est prévu sur le pourtour de ladite roue. La présente invention est caractérisée en ce que la séquence des largeurs d'au moins trois dents successives réparties sur le pourtour de la roue est significative.
EP03753440A 2002-10-08 2003-09-20 Roue de detection Withdrawn EP1549913A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10246806 2002-10-08
DE10246806A DE10246806A1 (de) 2002-10-08 2002-10-08 Geberrad
PCT/EP2003/010512 WO2004033996A1 (fr) 2002-10-08 2003-09-20 Roue de detection

Publications (1)

Publication Number Publication Date
EP1549913A1 true EP1549913A1 (fr) 2005-07-06

Family

ID=32038310

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03753440A Withdrawn EP1549913A1 (fr) 2002-10-08 2003-09-20 Roue de detection

Country Status (5)

Country Link
US (1) US20060241895A1 (fr)
EP (1) EP1549913A1 (fr)
JP (1) JP2006502393A (fr)
DE (1) DE10246806A1 (fr)
WO (1) WO2004033996A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004053156A1 (de) * 2004-11-03 2006-05-04 Robert Bosch Gmbh Verfahren zur Bestimmung der absoluten Kurbelwellenwinkelposition einer Brennkraftmaschine
EP1674831A1 (fr) * 2004-12-23 2006-06-28 Carl Freudenberg KG Procédé de transmission d'informations angulaires et dispositif pour la mise en oeuvre de ce procédé
US8346501B2 (en) * 2009-06-22 2013-01-01 Stowe Woodward, L.L.C. Industrial roll with sensors arranged to self-identify angular location
DE102010054532A1 (de) 2010-12-15 2012-06-21 Volkswagen Ag Verfahren zur automatischen Bestimmung eines Geberradfehlers einer Brennkraftmaschine
JP6016941B2 (ja) 2012-01-17 2016-10-26 ストウ・ウッドワード・ライセンスコ，リミテッド・ライアビリティ・カンパニー 回転ロールの角位置を決定するシステムおよび方法
DE102013102371B4 (de) 2013-03-11 2022-02-03 Danfoss Power Solutions Gmbh & Co. Ohg Signalgeber für eine Drehbewegungsmessanordnung
WO2023186493A1 (fr) * 2022-03-28 2023-10-05 Robert Bosch Gmbh Disque de déclenchement modifié, dispositif de commande et procédé pour moteur primaire de véhicule

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Publication number Priority date Publication date Assignee Title
GB8322886D0 (en) * 1983-08-25 1983-09-28 Lucas Ind Plc Transducer means
JPS60125756A (ja) * 1983-12-09 1985-07-05 Toyota Motor Corp 分配型燃料噴射ポンプ
DE3608321A1 (de) * 1986-03-13 1987-09-17 Pierburg Gmbh & Co Kg Einrichtung zum erfassen der zylinderbezogenen kurbelwellenstellung
US4972332A (en) * 1987-07-28 1990-11-20 Caterpillar Inc. Apparatus for determining the speed, angular position and direction of rotation of a rotatable shaft
GB2228842B (en) * 1989-01-09 1993-01-06 Schlumberger Ind Ltd Relative position transducer
GB9311694D0 (en) * 1993-06-07 1993-07-21 Switched Reluctance Drives Ltd Electric machine rotor prosition encoder
FR2734322B1 (fr) * 1995-05-15 1997-07-25 Magneti Marelli France Procede de reconnaissance de la phase des cylindres d'un moteur multicylindres a combustion interne a cycle a quatre temps
DE19521277A1 (de) * 1995-06-10 1996-12-12 Bosch Gmbh Robert Einrichtung zur Zylindererkennung bei einer mehrzylindrigen Brennkraftmaschine
DE19750304A1 (de) * 1997-11-13 1999-05-20 Bosch Gmbh Robert Vorrichtung zum Erfassen der Drehung eines Teils einschließlich der Drehrichtung
US5977765A (en) * 1997-12-05 1999-11-02 Ford Global Technologies, Inc. Speed, direction, and acceleration sensor for a rotating shaft having a rotor with teeth having unequal spacing
DE19816936A1 (de) * 1998-04-16 1999-10-21 Siemens Ag Antennen-Transponder-Anordnung zur Energieübertragung und Winkelmessung
DE19910117A1 (de) * 1999-03-08 2000-09-14 Zahnradfabrik Friedrichshafen Erkennung der Dreh- bzw. Verschieberichtung, bzw. der Drehzahl und der Verschiebegeschwindigkeit bewegter Teile
KR100335927B1 (ko) * 1999-07-21 2002-05-09 이계안 크랭크 각도 신호 처리장치 및 그 처리 방법
DE10017542A1 (de) * 2000-04-08 2001-10-11 Bosch Gmbh Robert Vorrichtung zur Positions- und/oder Drehzahlerkennung eines rotierenden Teils

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004033996A1 *

Also Published As

Publication number Publication date
JP2006502393A (ja) 2006-01-19
WO2004033996A1 (fr) 2004-04-22
DE10246806A1 (de) 2004-04-22
US20060241895A1 (en) 2006-10-26

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