DE2436824C3 - Device for the delivery of electrical signals - Google Patents

Device for the delivery of electrical signals

Info

Publication number
DE2436824C3
DE2436824C3 DE19742436824 DE2436824A DE2436824C3 DE 2436824 C3 DE2436824 C3 DE 2436824C3 DE 19742436824 DE19742436824 DE 19742436824 DE 2436824 A DE2436824 A DE 2436824A DE 2436824 C3 DE2436824 C3 DE 2436824C3
Authority
DE
Germany
Prior art keywords
pick
coil
transformer
electrical signal
secondary winding
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
DE19742436824
Other languages
German (de)
Other versions
DE2436824A1 (en
DE2436824B2 (en
Inventor
Rudolf Dipl.-Ing. 7317 Wendlingen Blum
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DE19742436824 priority Critical patent/DE2436824C3/en
Priority to FR7523174A priority patent/FR2280882A1/en
Publication of DE2436824A1 publication Critical patent/DE2436824A1/en
Publication of DE2436824B2 publication Critical patent/DE2436824B2/en
Application granted granted Critical
Publication of DE2436824C3 publication Critical patent/DE2436824C3/en
Expired legal-status Critical Current

Links

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
    • 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
    • F02P17/00—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines
    • F02P17/02—Checking or adjusting ignition timing
    • F02P17/04—Checking or adjusting ignition timing dynamically
    • 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
    • G01D5/14—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 the magnitude of a current or voltage
    • G01D5/20—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 the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00—Testing of engines
    • G01M15/04—Testing internal-combustion engines
    • G01M15/06—Testing internal-combustion engines by monitoring positions of pistons or cranks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/488—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by variable reluctance detectors

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Description

Die Erfindung betrifft eine Einrichtung zur Abgabe eines elektrischen Signales bei Vorbeibewegung einer auf einer Welle angebrachten Markierung an einer Aufnehmerspule, insDesondere zur Kennzeichnung der oberen Totpunktlage von Hub! olben ,'-. Brennkraftmaschinen. The invention relates to a device for dispensing an electrical signal when a marking on a shaft moves past a Pick-up coil, in particular to identify the top dead center position of the stroke! olben, '-. Internal combustion engines.

Es sind Einrichtungen dieser Art bek int, bei denen ein auf der Kurbelwelle einer Brennkraftmaschine angebrachte Markierung, beispielsweise ein Zahn oder Kerbe an einer Aufnehmerspule verbeibewegt wird, welche über eine Impulsformerschaltung und über eine Verstärkerschaltung mit einem elektrischen Signalausgang verbunden ist. an dem ein die Winkelstellung der Kurbelwelle kennzeichnendes Signal auftnti. Damit in der Aufnehmerspule eine Spannung induziert werden kann, ist bei den bekannten Einrichtungen die Aufnehmerspule mit einer Konstantstromquelle verbunden, die einen Strom durch die Aufnehmerspule treibt.There are bodies of this kind that have a marking applied to the crankshaft of an internal combustion engine, for example a tooth or Notch on a pick-up coil is moved, which via a pulse shaping circuit and via a Amplifier circuit is connected to an electrical signal output. on which one the angular position of the Signal identifying the crankshaft. So that a voltage can be induced in the pick-up coil can, the pick-up coil is connected to a constant current source in the known devices, which drives a current through the pickup coil.

Konstantstromqueilen sind in ihrem Aufbau aufwendig und deshalb teuer. Die Verwendung einer Spannungsquelle, die billiger wäre, ist jedoch nicht möglich, da über die Spannungsquelle das in der Aufnehmerspule induzierte Signal kurzgeschlossen würde. Außerdem ist bei den bekannten Einrichtungen von Nachteil, daß eine gemeinsame Masseleitung für die Aufnehmerspule und die Impulsformer- und Verstarkerschalteinrichtung vorgesehen ist. Da die genannte Einrichtung in einem Kraftfahrzeug verwendet werden soll, gelangen über die Masseleitungen häufig Störimpulse zu der Impulsformer und Verstärkerschalteinrichtung, so daß Meßfehler bzw Ungenauigkeiten auftreten können.Constant current sources are complex and therefore expensive to set up. The use of a voltage source which would be cheaper, but is not possible because the voltage source is used in the pick-up coil induced signal would be short-circuited. In addition, it is disadvantageous in the known devices that a common ground line for the pick-up coil and the pulse shaper and amplifier switching device is provided. Since the device is to be used in a motor vehicle, get over the ground lines often glitch to the pulse shaper and amplifier switching device, so that measurement errors or inaccuracies can occur.

Der Erfindung liegt die Aufgabe zugrunde, eine Einrichtung zur Aufgäbe von elektrischen Signalen, insbesondere zur Kennzeichnung der oberen Totpunkt* lage von Hubkolben in Brennkraftmaschinen zu schaffenf die ohne die teure und aufwendige Konstant' Stromquelle auskommt und bei der auch eine Massetrennung zwischen der Masseleitung der Aufnehmerspule und der Masseleitung von nachfolgenden Schalteinrichtungen, also beispielsweise von rmpulsformer- und Verstärkerschalteinrichtungen möglich ist.The invention has the object of providing a device for gave up of electrical signals, in particular for identifying the top dead center * position of reciprocating pistons in internal combustion engines to provide f without the expensive and complex constant 'manages power source and at a mass separation between the ground line of the Pick-up coil and the ground line of subsequent switching devices, so for example of pulse shaper and amplifier switching devices is possible.

Diese Aufgabe wird gemäß der Erfindung dadurch gelöst, daßThis object is achieved according to the invention in that

a) die Aufnehmerspule über die Primärwicklung eines Übertragers mit einer Betriebsspannungsquelle verbunden ist, unda) the pick-up coil via the primary winding of a transformer with an operating voltage source connected, and

b) an der Sekundärwicklung des Übertragers das gewünschte elektrische Signal abnehmbar ist.b) the desired electrical signal can be removed from the secondary winding of the transformer.

Weitere vorteilhafte Ausgestaltungen und zweckmäßige Weiterbildungen der Erfindung ergeben sich in Verbindung mit dem Unteranspruch aus der nachfolgenden Beschreibung eines Ausführungsbeispiels und aus der zugehörigen Zeichnung, die in schematischer Darstellung einen Geber zur Erfassung der oberen Totpunktlage von Hubkolben in Brennkraftmaschinen zeigt.Further advantageous refinements and expedient developments of the invention emerge in FIG Connection with the dependent claim from the following description of an exemplary embodiment and from the accompanying drawing, which is a schematic representation of an encoder for detecting the upper Shows dead center position of reciprocating pistons in internal combustion engines.

In der Zeichnung ist eine Aufnehmerspule 1 dargestellt. An dieser Aufnehmerspule wird eine Markierung vorbeibewegt. Diese Markierung kann beispielsweise ein Zahn 2 sein, der auf einer Riemenscheibe 4 angebracht ist, welche mit der Kurbelwelle 3 einer weiter nichtdargestellten Brennkraftmaschine verbunden ist. An Stelle des Zahnes 2 kann auch eine Kerbe in der Scheibe 4 angebracht sein. Die Aufnehmerspule ϊ ist mit einer Masseleitung 5A pick-up coil 1 is shown in the drawing. On this pick-up coil is a Mark moved past. This marking can be, for example, a tooth 2 on a Pulley 4 is attached, which is connected to the crankshaft 3 of an internal combustion engine, not shown connected is. Instead of the tooth 2, a notch can also be made in the disk 4. The pick-up coil ϊ is connected to a ground line 5

so verbunden, welche üblicherweise gleichzeitig die Fahrzeugmasse darstellt. Ein zweiter Anschluß der Aufnehmerspule 1 ist über die Primärwicklung 6 eines Übertragers 7 mit dem Plusp I 8 einer Betriebsspannungsquelle 9 verbunden, die einseitig mit derso connected, which usually simultaneously the vehicle ground represents. A second connection of the pickup coil 1 is via the primary winding 6 of a Transformer 7 connected to the positive I 8 of an operating voltage source 9, which is unilaterally connected to the

5·* Fahrzeugmasse 5 verbunden ist. Die Sekundärwicklung 10 des Übertragers 7 ist über einen Polwendeschalter 11 mit einer Impulsformer und Verstärkfschalteinrichtung 12 verbunden, an deren Ausg3ngsKlemme das gewünschte elektrische Signal auftritt, wenn die5 · * vehicle ground 5 is connected. The secondary winding 10 of the transformer 7 is via a pole reversing switch 11 with a pulse shaper and gain switching device 12 connected, at whose output terminal the desired electrical signal occurs when the

■"' Markierung 2 an der Aufnehmerspule 1 vorbeibewegt wird. Ein zweiter Anschluß der Sekundärwicklung 10 ist über den Polwendeschalter Il mit einer getrennten Verstarker-Masseleituf ι? Π verbunden.Mark 2 moved past pick-up reel 1 will. A second connection of the secondary winding 10 is on the pole reversing switch Il with a separate amplifier ground line ι? Π connected.

Durch den AnschluU der Betriebsspannungsquclle 9 über die Primärwicklung 6 des Übertragers 7 ergibt sii h gleichspannungsmäßig ein geringer Widerstand fur den durch die Aufnehmerspüe 2 fließenden Strom. Wech sel-trommäßig ergibt sich dagegen ein hoher Wider stand, sr) daß bei Vorbcibewegung des /ahnes 2 an derBy connecting the operating voltage source 9 via the primary winding 6 of the transformer 7 results in sii h In terms of DC voltage, a low resistance for the current flowing through the pick-up tank 2. Change On the other hand, there is a high negative in terms of drums stood, sr) that when the / ahnes 2 moved in front of the

w Aufnehmerspule 1 ein elektrisches Signal in der Aufnenmerspule 1 induziert werden kann Dieses elektrische Signal wird über die Primärwicklung 6 des Übertragers 7 auf die Sekundärwicklung 10 übertragen und in der Schalteinrichtung 12 weiterverarbeitet An w pick-up coil 1 an electrical signal can be induced in pick-up coil 1. This electrical signal is transmitted via primary winding 6 of transformer 7 to secondary winding 10 and processed further in switching device 12

r' einer Ausgangsklemme 14 kann ein Signal abgenommen werden, das die Winkelstellung der Kurbelwelle 3 der Brennkraftmaschine kennzeichnet r 'an output terminal 14, a signal can be picked up which characterizes the angular position of the crankshaft 3 of the internal combustion engine

Zweckmäßigerweise ist dip Sekundären kliing 10 über den Polwendesehalier 11 mit der nachfolgenden Schalteinrichtung 12 verbunden, so daß der Schalteinrichtung 12 stets ein Signal mit der gleichen Phasenlage zugeführt wird, auch wenn an Stelle des Zahnes 2 eine Kerbe verwendet wird.Conveniently, dip secondary is 10 via the Polwendesehalier 11 with the following Switching device 12 connected so that the switching device 12 a signal with the same phase position is always supplied, even if instead of tooth 2 a Notch is used.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims (2)

Patentansprüche:Patent claims: 1. Einrichtung zur Abgabe eines elektrischen Signales bei Vorbeiwegung einer auf einer Welle angebrachten Markierung an einer Aufnehmerspule, insbesondere zur Kennzeichnung der oberen Totpunktlage von Hubkolben in Brennkraftmaschinen, dadurch gekennzeichnet, daß1. Device for emitting an electrical signal when one passes by on a wave attached marking on a pick-up reel, in particular to identify the top dead center position of reciprocating pistons in internal combustion engines, characterized in that a) die Aufnehmerspule (1) über die Primärwicklung (6) eines Übertragers (7) mit einer Betriebsspannungsquelle (9) verbunden ist, wobeia) the pick-up coil (1) via the primary winding (6) of a transformer (7) with a Operating voltage source (9) is connected, wherein b) an der Sekundärwicklung (10) des Übertragers (7) das gewünschte elektrische Signal abnehmbar ist.b) the desired electrical signal can be removed from the secondary winding (10) of the transformer (7) is. 2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß da« Ausgangssignal der Sekundärwicklung (10) über einen Polwendeschalter (11) einer nachgeschalteten Schalteinrichtung (12) zugeführt ist.2. Device according to claim 1, characterized in that there «output signal of the secondary winding (10) fed via a pole reversing switch (11) to a downstream switching device (12) is.
DE19742436824 1974-07-31 1974-07-31 Device for the delivery of electrical signals Expired DE2436824C3 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19742436824 DE2436824C3 (en) 1974-07-31 1974-07-31 Device for the delivery of electrical signals
FR7523174A FR2280882A1 (en) 1974-07-31 1975-07-24 T.D.C. of I.C. engine piston signalling device - delivers signal when marking on shaft passes before pickup coil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742436824 DE2436824C3 (en) 1974-07-31 1974-07-31 Device for the delivery of electrical signals

Publications (3)

Publication Number Publication Date
DE2436824A1 DE2436824A1 (en) 1976-02-12
DE2436824B2 DE2436824B2 (en) 1980-06-12
DE2436824C3 true DE2436824C3 (en) 1981-02-19

Family

ID=5922014

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19742436824 Expired DE2436824C3 (en) 1974-07-31 1974-07-31 Device for the delivery of electrical signals

Country Status (2)

Country Link
DE (1) DE2436824C3 (en)
FR (1) FR2280882A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2607395A1 (en) * 1976-02-24 1977-08-25 Bosch Gmbh Robert DEVICE FOR SIGNAL EVALUATION OF MECHANICAL-ELECTRIC ROTARY MARK ENCODERS
GB2116718B (en) * 1982-03-10 1985-08-07 Autosense Equipment Limited Determining the position of a piston in the cylinder of an ic engine

Also Published As

Publication number Publication date
FR2280882A1 (en) 1976-02-27
DE2436824A1 (en) 1976-02-12
FR2280882B3 (en) 1979-04-27
DE2436824B2 (en) 1980-06-12

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Legal Events

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OD Request for examination
C3 Grant after two publication steps (3rd publication)
8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee