EP1518045A1 - Direct electromagnetic drive for a throttle valve shaft in a throttle valve manifold - Google Patents

Direct electromagnetic drive for a throttle valve shaft in a throttle valve manifold

Info

Publication number
EP1518045A1
EP1518045A1 EP03761406A EP03761406A EP1518045A1 EP 1518045 A1 EP1518045 A1 EP 1518045A1 EP 03761406 A EP03761406 A EP 03761406A EP 03761406 A EP03761406 A EP 03761406A EP 1518045 A1 EP1518045 A1 EP 1518045A1
Authority
EP
European Patent Office
Prior art keywords
throttle valve
magnetic shell
steel ring
inner magnetic
direct drive
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.)
Granted
Application number
EP03761406A
Other languages
German (de)
French (fr)
Other versions
EP1518045B1 (en
Inventor
Gerd Bornmann
Wolfgang Sauerschell
Lutz Scholten
Peter Wiese
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP1518045A1 publication Critical patent/EP1518045A1/en
Application granted granted Critical
Publication of EP1518045B1 publication Critical patent/EP1518045B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
    • F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
    • F02D11/10—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
    • F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
    • F02D11/10—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
    • F02D11/106—Detection of demand or actuation

Definitions

  • the invention relates to a direct drive for a throttle valve shaft in a throttle valve assembly.
  • Direct drives are known. As a rule, this involves the arrangement of a coil which is supplied with electrical current and a rotor which is arranged in its area of action and which is provided with permanent magnets and is set into a rotary movement by the coil induction.
  • the invention has for its object to provide a direct drive for a throttle valve shaft in a throttle valve assembly, with which a position detection of the throttle valve is continuously possible and which only requires a relatively small amount of space.
  • a direct drive for a throttle valve shaft in a throttle valve connector which consists of a coil and a rotor arranged directly next to the coil, in which the rotor consists of a steel ring, in which a first inner magnetic shell and one inside the second inner magnetic shell lie opposite one another and on the outside there is a first outer magnetic shell and a second outer magnetic shell lying opposite one another and 0 in which the steel ring is connected to the throttle valve shaft at its end facing the throttle valve, and in the region of the one facing away from the throttle valve In the middle of the steel ring a sensor for position detection of the Throttle valve is arranged. The rotor is located right next to the coil.
  • the inner circumferential surface of the steel ring, which is connected to the throttle valve shaft consists of a non-magnetic material is particularly advantageous.
  • An intermediate layer made of plastic can be provided.
  • commercially available AMR sensors anisotropy magnetoresistor sensors
  • the first inner magnetic shell and the second inner magnetic shell serve for position detection with respect to the
  • the first outer magnetic shell and the second outer magnetic shell serve to drive the rotor via the coil. It has surprisingly been found that with the direct drive for a throttle valve shaft in a throttle valve connector, position detection of the position of the throttle valve in the throttle valve connector is possible in a relatively simple manner, with only relatively little installation space being required, since the sensor is arranged over a partial area of the valve Coil is realized.
  • the arrangement of the steel ring has the advantage that the magnetic fields, caused by the first inner magnetic shell and the second inner magnetic shell on the one hand and the first outer magnetic shell and the second outer magnetic shell on the other hand, do not adversely affect one another, so that the sensor provides precise information about the actual position of the throttle valve in the throttle valve connector is supplied, which can then be passed on to the control units. Is to it is advantageously not necessary to arrange the sensor outside the rotor of the direct drive in order to detect an accurate detection of the position of the throttle valve in the throttle valve connector, which would require a larger installation space.
  • a preferred embodiment of the invention consists in that the first inner magnetic shell and the first outer magnetic shell and the second inner magnetic shell and the second outer magnetic shell are each arranged parallel to one another on the same half of the steel ring. This advantageously facilitates the manufacture of the direct drive rotor for a throttle valve shaft.
  • the first inner magnetic shell and the first outer magnetic shell and the second inner magnetic shell and the second outer magnetic shell each have the same magnetic polarity. In this way, the course of the magnetic lines in the area of the steel ring can be optimized, as a result of which the quality of the information that is fed to the sensor can also be optimized.
  • a further preferred embodiment of the invention consists in that the steel ring has an annular groove in the region of the end facing away from the throttle valve, in which the first inner magnetic shell and the second inner magnetic shell rest on the steel ring.
  • the first inner magnetic shell and the second inner magnetic shell can be securely fixed in the steel ring in a relatively simple manner, at the same time preventing the first inner magnetic shell and the second inner magnetic shell from extending over the entire width of the steel ring extend. It is advantageous that the first inner magnetic shell and the second inner magnetic shell are only in the area of the sensor, and thus the smallest disruptive influences on the actual drive are avoided.
  • a further embodiment of the invention consists in that the first inner magnetic shell or the second inner magnetic shell are arranged at a distance a of 1 mm to 3 mm from the stop of the steel ring delimiting the annular groove. In this way, the shielding effect of the steel ring can be optimized, which has an advantageous effect on the position detection of the throttle valve.
  • Magnetic shell or the first outer magnetic shell and the second outer magnetic shell each arranged as a single part.
  • the item thus acts as a ring magnet. This facilitates the manufacture of the direct drive for a throttle valve shaft, since the number of individual parts that are in the
  • Fig. 2 shows the cross section of the direct drive for a throttle valve shaft in a throttle valve assembly according to
  • 3 a), b) shows the direct drive for a throttle valve shaft in a throttle valve connector in a three-dimensional form in an exploded view.
  • Fig. 1 the direct drive for a throttle valve shaft in a throttle valve neck is shown in side view and in cross section according to section A-A. It consists of a coil 1 and a rotor 2 arranged directly next to the coil 1, the rotor 2 consisting of a steel ring 3, in which a first inner magnetic shell 5a and a second inner magnetic shell 5b lie opposite one another. On the outside of the steel ring 3, a first outer magnetic shell 4a and a second outer magnetic shell 4b are arranged opposite one another, which serve to generate the rotary movement via the coil 1.
  • the steel ring 3 is connected to the throttle valve shaft (not shown) and has a sensor in the center (not shown) for detecting the position of the throttle valve. It is clear from FIG. 1 b) that the width of the coil 1 extends over the entire width of the rotor 2.
  • FIG. 2 the direct drive for a throttle valve shaft in a throttle valve neck according to section AA in FIG. 1 is shown enlarged.
  • the steel ring 3 has a sensor (not shown) in the center 6 of the end 3 ′′ facing away from the throttle valve (not shown) for detecting the position of the throttle valve.
  • the steel ring 3 In the region 6 of the end 3 ′′ facing away from the throttle valve, the steel ring 3 has an annular groove 3 ′′ ′′, in which the first inner magnetic shell 5 a and the second inner magnetic shell 5 b rest on the steel ring 3.
  • the first inner magnetic shell 5a and the second inner magnetic shell 5b are at a distance a of 1 mm to 3 mm from that which defines the annular groove 3 ''' Stop 3 * of the steel ring 3 arranged.
  • the steel ring 3 is connected at its end 3 ′ facing the throttle valve to the throttle valve shaft (not shown).
  • the first inner magnetic shell 5a and the second inner magnetic shell 5b are arranged opposite one another in the steel ring 3 in the direction of the arrow.
  • the sensor 10 is arranged in the area 6 of the end 3 ′ 1 (not shown) of the steel ring 3 facing away from the throttle valve 9 in the center for position detection of the throttle valve 9.
  • the sensor 10 is a commercially available position sensor, for example AMR sensors
  • the steel ring 3 has a shielding effect and prevents mutual negative influence of the first inner magnetic shell 5a and the second inner magnetic shell 5b on the one hand and the first outer magnetic shell 4a and the second outer magnetic shell 4b on the other hand.
  • the first inner magnetic shell 5a and the second inner magnetic shell 5b or the first outer magnetic shell 4a and the second outer magnetic shell 4b can also be manufactured as individual parts.
  • the arrangement of the sensor 10 in the center of the interior of the rotor 2 is particularly advantageous, as a result of which the required installation space can be minimized.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

The direct drive for a throttle valve shaft (7) in a throttle valve manifold (8) comprises a coil (1) and a rotor (2) arranged directly adjacent to the coil (1). The rotor (2) is made from a steel ring (3) inside which a first inner magnetic shell (5a) and a second inner magnetic shell (5b) lie opposite each other. The steel ring (3) has a first outer magnetic shell (4a) and a second outer magnetic shell (4b) lying opposite each other on the outside thereof. The steel ring (3) is connected to the throttle valve shaft (7) on the end (3') thereof facing the throttle valve (9). A sensor (10) for position recognition of the throttle valve (9) is arranged in the middle of that region (6) of the end (3'') of the steel ring (3) facing away from the throttle valve (9).

Description

ELEKTROMAGNETISCHER DIREKTANTRIEB FÜR EINE DROSSELKLAPPENWELLE IN EINEM DROSSELKLAPPENSTUTZENELECTROMAGNETIC DIRECT DRIVE FOR A THROTTLE SHAFT IN AN EM THROTTLE VALVE
Die Erfindung bezieht sich auf einen Direktantrieb für eine Drosselklappenwelle in einem Drosselklappenstutzen. Direktantriebe sind bekannt. In der Regel handelt es sich dabei um die Anordnung einer Spule, die mit elektrischem 0 Strom beaufschlagt wird und einem in ihrem Wirkungsbereich angeordneten Rotor, der mit Permanentmagneten versehen ist und durch die Spuleninduktion in eine Drehbewegung versetzt wird.The invention relates to a direct drive for a throttle valve shaft in a throttle valve assembly. Direct drives are known. As a rule, this involves the arrangement of a coil which is supplied with electrical current and a rotor which is arranged in its area of action and which is provided with permanent magnets and is set into a rotary movement by the coil induction.
5 Der Erfindung liegt die Aufgabe zugrunde, einen Direktantrieb für eine Drosselklappenwelle in einem Drosselklappenstutzen zu schaffen, mit welchem eine Positionserkennung der Drosselklappe kontinuierlich möglich ist und der nur einen relativ geringen Bauraum benötigt. 05 The invention has for its object to provide a direct drive for a throttle valve shaft in a throttle valve assembly, with which a position detection of the throttle valve is continuously possible and which only requires a relatively small amount of space. 0
Die der Erfindung zugrundliegende Aufgabe wird durch einen Direktantrieb für eine Drosselklappenwelle in einem Drosselklappenstutzen gelöst, der aus einer Spule und einem direkt neben der Spule angeordneten Rotor besteht, bei dem 5 der Rotor aus einem Stahlring besteht, in dem innen eine erste innere Magnetschale und eine zweite innere Magnetschale zueinander gegenüberliegend anliegen und auf seiner Außenseite eine erste äußere Magnetschale und eine zweite äußere Magnetschale zueinander gegenüberliegend anliegen und 0 bei dem der Stahlring an seinem der Drosselklappe zugewandten Ende mit der Drosselklappenwelle verbunden ist, und bei dem im Bereich des von der Drosselklappe abgewandten Endes des Stahlringes mittig ein Sensor zur Positionserkennung der Drosselklappe angeordnet ist. Der Rotor ist direkt neben der Spule angeordnet. Darunter ist eine Anordnung des Rotors im Bereich des durch die Spule erzeugten Magnetfeldes zu verstehen, wobei der Bereich des von der Drosselklappe abgewandten Endes des Stahlringes, in dem der Sensor angeordnet ist, sich über einen Teil der Breite der Spule erstreckt. Besonders vorteilhaft ist es, wenn die innere Mantelfläche des Stahlringes, die mit der Drosselklappenwelle verbunden ist, aus einem nicht magnetischen Material besteht. Dabei kann eine Zwischenschicht aus Kunststoff vorgesehen sein. Als Sensoren werden beispielsweise handelsübliche AMR- Sensoren (Anisotropie Magneto Resistor-Sensors) eingesetzt, die beispielsweise von der Firma Philips vertrieben werden. Die erste innere Magnetschale und die zweite innere Magnetschale dienen der Positionserkennung bezüglich derThe object on which the invention is based is achieved by a direct drive for a throttle valve shaft in a throttle valve connector, which consists of a coil and a rotor arranged directly next to the coil, in which the rotor consists of a steel ring, in which a first inner magnetic shell and one inside the second inner magnetic shell lie opposite one another and on the outside there is a first outer magnetic shell and a second outer magnetic shell lying opposite one another and 0 in which the steel ring is connected to the throttle valve shaft at its end facing the throttle valve, and in the region of the one facing away from the throttle valve In the middle of the steel ring a sensor for position detection of the Throttle valve is arranged. The rotor is located right next to the coil. This includes an arrangement of the rotor in the region of the magnetic field generated by the coil, the region of the end of the steel ring facing away from the throttle valve, in which the sensor is arranged, extending over part of the width of the coil. It when the inner circumferential surface of the steel ring, which is connected to the throttle valve shaft, consists of a non-magnetic material is particularly advantageous. An intermediate layer made of plastic can be provided. For example, commercially available AMR sensors (anisotropy magnetoresistor sensors) are used as sensors, which are sold, for example, by Philips. The first inner magnetic shell and the second inner magnetic shell serve for position detection with respect to the
Stellung der Drosselklappe über den angeordneten Sensor. Die erste äußere Magnetschale und die zweite äußere Magnetschale dienen dem Antrieb des Rotors über die Spule. Es hat sich in überraschender Weise gezeigt, dass mit dem Direktantrieb für eine Drosselklappenwelle in einem Drosselklappenstutzen eine Positionserkennung der Stellung der Drosselklappe im Drosselklappenstutzen auf relativ einfache Weise möglich ist, wobei nur relativ wenig Bauraum erforderlich ist, da die Anordnung des Sensors über einen Teilbereich der Spule realisiert wird. Die Anordnung des Stahlringes hat dabei den Vorteil, dass sich die Magnetfelder, bedingt durch die erste innere Magnetschale und die zweite innere Magnetschale einerseits und die erste äußere Magnetschale und die zweite äußere Magnetschale anderseits nicht gegeneinander nachteilig beeinflussen, so dass der Sensor mit genauen Informationen über die tatsächliche Position der Drosselklappe im Drosselklappenstutzen versorgt wird, die dann anschließend an die Steuerungseinheiten weitergegeben werden können. Dazu ist es in vorteilhafter Weise nicht erforderlich, den Sensor außerhalb des Rotors des Direktantriebs anzuordnen, um eine genaue Erkennung der Position der Drosselklappe im Drosselklappenstutzen zu erfassen, was einen größeren Bauraum erforderlich machen würde.Position of the throttle valve via the arranged sensor. The first outer magnetic shell and the second outer magnetic shell serve to drive the rotor via the coil. It has surprisingly been found that with the direct drive for a throttle valve shaft in a throttle valve connector, position detection of the position of the throttle valve in the throttle valve connector is possible in a relatively simple manner, with only relatively little installation space being required, since the sensor is arranged over a partial area of the valve Coil is realized. The arrangement of the steel ring has the advantage that the magnetic fields, caused by the first inner magnetic shell and the second inner magnetic shell on the one hand and the first outer magnetic shell and the second outer magnetic shell on the other hand, do not adversely affect one another, so that the sensor provides precise information about the actual position of the throttle valve in the throttle valve connector is supplied, which can then be passed on to the control units. Is to it is advantageously not necessary to arrange the sensor outside the rotor of the direct drive in order to detect an accurate detection of the position of the throttle valve in the throttle valve connector, which would require a larger installation space.
Eine bevorzugte Ausgestaltung der Erfindung besteht darin, dass die erste innere Magnetschale und die erste äußere Magnetschale sowie die zweite innere Magnetschale und die zweite äußere Magnetschale jeweils parallel zueinander auf derselben Hälfte des Stahlringes angeordnet sind. Dies erleichtert in vorteilhafter Weise die Herstellung des Rotors des Direktantriebs für eine Drosselklappenwelle.A preferred embodiment of the invention consists in that the first inner magnetic shell and the first outer magnetic shell and the second inner magnetic shell and the second outer magnetic shell are each arranged parallel to one another on the same half of the steel ring. This advantageously facilitates the manufacture of the direct drive rotor for a throttle valve shaft.
Gemäß einer weiteren Ausgestaltung der Erfindung weisen die erste innere Magnetschale und die erste äußere Magnetschale sowie die zweite innere Magnetschale und die zweite äußere Magnetschale jeweils dieselbe magnetische Polung auf. Auf diese Weise lässt sich der Verlauf der Magnetlinien im Bereich des Stahlringes optimieren, wodurch sich die Qualität der Informationen, die dem Sensor zugeleitet werden, ebenfalls optimiert werden kann.According to a further embodiment of the invention, the first inner magnetic shell and the first outer magnetic shell and the second inner magnetic shell and the second outer magnetic shell each have the same magnetic polarity. In this way, the course of the magnetic lines in the area of the steel ring can be optimized, as a result of which the quality of the information that is fed to the sensor can also be optimized.
Eine weitere bevorzugte Ausgestaltung der Erfindung besteht darin, dass der Stahlring im Bereich des von der Drosselklappe abgewandten Endes eine ringförmige Nut aufweist, in der die erste innere Magnetschale und die zweite innere Magnetschale am Stahlring anliegen. Auf diese Weise lassen sich die erste innere Magnetschale und die zweite innere Magnetschale auf relativ einfache Weise sicher im Stahlring fixieren, wobei gleichzeitig verhindert wird, dass sich die erste innere Magnetschale und die zweite innere Magnetschale über die gesamte Breite des Stahlringes erstrecken. Dabei ist vorteilhaft, dass sich die erste innere Magnetschale und die zweite innere Magnetschale nur im Bereich des Sensors befinden und somit auch kleinste störende Einflüsse auf den eigentlichen Antrieb vermieden werden.A further preferred embodiment of the invention consists in that the steel ring has an annular groove in the region of the end facing away from the throttle valve, in which the first inner magnetic shell and the second inner magnetic shell rest on the steel ring. In this way, the first inner magnetic shell and the second inner magnetic shell can be securely fixed in the steel ring in a relatively simple manner, at the same time preventing the first inner magnetic shell and the second inner magnetic shell from extending over the entire width of the steel ring extend. It is advantageous that the first inner magnetic shell and the second inner magnetic shell are only in the area of the sensor, and thus the smallest disruptive influences on the actual drive are avoided.
Eine weitere Ausgestaltung der Erfindung besteht darin, dass die erste innere Magnetschale oder die zweite innere Magnetschale im Abstand a von 1 mm bis 3 mm zu dem die ringförmige Nut begrenzenden Anschlag des Stahlringes angeordnet sind. Auf diese Weise lässt sich die abschirmende Wirkung des Stahlringes optimieren, was sich vorteilhaft auf die Positionserkennung der Drosselklappe auswirkt.A further embodiment of the invention consists in that the first inner magnetic shell or the second inner magnetic shell are arranged at a distance a of 1 mm to 3 mm from the stop of the steel ring delimiting the annular groove. In this way, the shielding effect of the steel ring can be optimized, which has an advantageous effect on the position detection of the throttle valve.
Gemäß einer weiteren bevorzugten Ausgestaltung der Erfindung sind die erste innere Magnetschale und die zweite innereAccording to a further preferred embodiment of the invention, the first inner magnetic shell and the second inner one
Magnetschale oder die erste äußere Magnetschale und die zweite äußere Magnetschale jeweils als Einzelteil angeordnet.Magnetic shell or the first outer magnetic shell and the second outer magnetic shell each arranged as a single part.
Das Einzelteil wirkt somit als Ringmagnet . Dies erleichtert die Herstellung des Direktantriebes für eine Drosselklappenwelle, da die Anzahl der Einzelteile, die imThe item thus acts as a ring magnet. This facilitates the manufacture of the direct drive for a throttle valve shaft, since the number of individual parts that are in the
Bereich des Rotors fixiert werden müssen, reduziert ist.Area of the rotor must be fixed is reduced.
Die Erfindung wird nachfolgend anhand der Zeichnung (Fig. 1, a) , b) ; Fig. 2; Fig. 3, a) , b) ) näher und beispielhaft erläutert .The invention is described below with reference to the drawing (Fig. 1, a), b); Fig. 2; Fig. 3, a), b)) explained in more detail and by way of example.
Fig. 1 a) , b) zeigt eine Seitenansicht und einen Querschnitt des Direktantriebs für eine Drosselklappenwelle in einem Drosselklappenstutzen.1 a), b) shows a side view and a cross section of the direct drive for a throttle valve shaft in a throttle valve neck.
Fig. 2 zeigt den Querschnitt des Direktantriebs für eine Drosselklappenwelle in einem Drosselklappenstutzen gemäßFig. 2 shows the cross section of the direct drive for a throttle valve shaft in a throttle valve assembly according to
Fig. 1 b) in vergrößerter Form. Fig. 3 a), b) zeigt den Direktantrieb für eine Drosselklappenwelle in einem Drosselklappenstutzen in dreidimensionaler Form in Explosionsdarstellung.Fig. 1 b) in an enlarged form. 3 a), b) shows the direct drive for a throttle valve shaft in a throttle valve connector in a three-dimensional form in an exploded view.
In Fig. 1 ist der Direktantrieb für eine Drosselklappenwelle in einem Drosselklappenstutzen in der Seitenansicht sowie im Querschnitt gemäß Schnitt A-A dargestellt. Er besteht aus einer Spule 1 und einem direkt neben der Spule 1 angeordneten Rotor 2, wobei der Rotor 2 aus einem Stahlring 3 besteht, in dem innen eine erste innere Magnetschale 5a und eine zweite innere Magnetschale 5b zueinander gegenüberliegend anliegen. Auf der Außenseite des Stahlringes 3 sind eine erste äußere Magnetschale 4a und eine zweite äußere Magnetschale 4b zueinander gegenüberliegend angeordnet, die zur Erzeugung der Drehbewegung über die Spule 1 dienen. Der Stahlring 3 ist mit der Drosselklappenwelle (nicht dargestellt) verbunden und weist mittig einen Sensor (nicht dargestellt) zur Positionserkennung der Drosselklappe auf. Aus Fig. 1 b) wird deutlich, dass sich die Breite der Spule 1 über die gesamte Breite des Rotors 2 erstreckt .In Fig. 1, the direct drive for a throttle valve shaft in a throttle valve neck is shown in side view and in cross section according to section A-A. It consists of a coil 1 and a rotor 2 arranged directly next to the coil 1, the rotor 2 consisting of a steel ring 3, in which a first inner magnetic shell 5a and a second inner magnetic shell 5b lie opposite one another. On the outside of the steel ring 3, a first outer magnetic shell 4a and a second outer magnetic shell 4b are arranged opposite one another, which serve to generate the rotary movement via the coil 1. The steel ring 3 is connected to the throttle valve shaft (not shown) and has a sensor in the center (not shown) for detecting the position of the throttle valve. It is clear from FIG. 1 b) that the width of the coil 1 extends over the entire width of the rotor 2.
In Fig. 2 ist der Direktantrieb für eine Drosselklappenwelle in einem Drosselklappenstutzen gemäß Schnitt A-A in Fig. 1 vergrößert dargestellt. Der Stahlring 3 weist im Bereich 6 des von der Drosselklappe (nicht dargestellt) abgewandten Endes 3 ' ' mittig einen Sensor (nicht dargestellt) zur Positionserkennung der Drosselklappe auf. Im Bereich 6 des von der Drosselklappe abgewandten Endes 3 ' ' weist der Stahlring 3 eine ringförmige Nut 3' ' ' auf, in der die erste innere Magnetschale 5a und die zweite innere Magnetschale 5b am Stahlring 3 anliegen. Die erste innere Magnetschale 5a und die zweite innere Magnetschale 5b sind dabei im Abstand a von 1 mm bis 3 mm zu dem die ringförmige Nut 3 ' ' ' begrenzenden Anschlag 3* des Stahlringes 3 angeordnet. Der Stahlring 3 ist an seinem der Drosselklappe zugewandten Ende 3 ' mit der Drosselklappenwelle (nicht dargestellt) verbunden.In FIG. 2, the direct drive for a throttle valve shaft in a throttle valve neck according to section AA in FIG. 1 is shown enlarged. The steel ring 3 has a sensor (not shown) in the center 6 of the end 3 ″ facing away from the throttle valve (not shown) for detecting the position of the throttle valve. In the region 6 of the end 3 ″ facing away from the throttle valve, the steel ring 3 has an annular groove 3 ″ ″, in which the first inner magnetic shell 5 a and the second inner magnetic shell 5 b rest on the steel ring 3. The first inner magnetic shell 5a and the second inner magnetic shell 5b are at a distance a of 1 mm to 3 mm from that which defines the annular groove 3 ''' Stop 3 * of the steel ring 3 arranged. The steel ring 3 is connected at its end 3 ′ facing the throttle valve to the throttle valve shaft (not shown).
In Fig. 3 a), b) ist der Direktantrieb für eineIn Fig. 3 a), b) is the direct drive for one
Drosselklappenwelle 7 in einem Drosselklappenstutzen 8 dreidimensional in Form einer ExplosionsZeichnung dargestellt. Die erste innere Magnetschale 5a und die zweite innere Magnetschale 5b sind zueinander gegenüberliegend gemäß Pfeilrichtung innen im Stahlring 3 anliegend angeordnet. Der Sensor 10 wird im Bereich 6 des von der Drosselklappe 9 abgewandten Endes 3'1 (nicht dargestellt) des Stahlringes 3 mittig zur Positionserkennung der Drosselklappe 9 angeordnet. Bei dem Sensor 10 handelt es sich um handelsübliche Positionssensoren, wobei beispielsweise AMR-SensorenThrottle valve shaft 7 in a throttle valve connector 8 shown three-dimensionally in the form of an exploded view. The first inner magnetic shell 5a and the second inner magnetic shell 5b are arranged opposite one another in the steel ring 3 in the direction of the arrow. The sensor 10 is arranged in the area 6 of the end 3 ′ 1 (not shown) of the steel ring 3 facing away from the throttle valve 9 in the center for position detection of the throttle valve 9. The sensor 10 is a commercially available position sensor, for example AMR sensors
(Anisotropie Magneto Resistor-Sensoren) zum Einsatz kommen. Diese Sensoren werden von der Firma Philips, beispielsweise unter der Typenbezeichnung KMZ41, vertrieben. Der Stahlring 3 hat eine abschirmende Wirkung und verhindert eine gegenseitige negative Beeinflussung der ersten inneren Magnetschale 5a und der zweiten inneren Magnetschale 5b einerseits und der ersten äußeren Magnetschale 4a und der zweiten äußeren Magnetschale 4b andererseits. Die erste innere Magnetschale 5a und die zweite innere Magnetschale 5b oder die erste äußere Magnetschale 4a und die zweite äußere Magnetschale 4b können auch jeweils als Einzelteil gefertigt sein. Besonders vorteilhaft ist die Anordnung des Sensors 10 mittig im Inneren des Rotors 2, wodurch sich der erforderliche Bauraum minimieren lässt. (Anisotropy Magneto Resistor sensors) are used. These sensors are sold by Philips, for example under the type designation KMZ41. The steel ring 3 has a shielding effect and prevents mutual negative influence of the first inner magnetic shell 5a and the second inner magnetic shell 5b on the one hand and the first outer magnetic shell 4a and the second outer magnetic shell 4b on the other hand. The first inner magnetic shell 5a and the second inner magnetic shell 5b or the first outer magnetic shell 4a and the second outer magnetic shell 4b can also be manufactured as individual parts. The arrangement of the sensor 10 in the center of the interior of the rotor 2 is particularly advantageous, as a result of which the required installation space can be minimized.

Claims

Patentansprüche claims
1. Direktantrieb für eine Drosselklappenwelle (7) in einem Drosselklappenstutzen (8) , bestehend aus einer Spule (1) und einem direkt neben der Spule (1) angeordneten Rotor (2) , bei dem der Rotor (2) aus einem Stahlring (3) besteht, in dem innen eine erste innere Magnetschale (5a) und eine zweite innere Magnetschale (5b) zueinander gegenüberliegend anliegen und auf seiner Außenseite eine erste äußere Magnetschale (4a) und eine zweite äußere1. Direct drive for a throttle valve shaft (7) in a throttle valve connector (8), consisting of a coil (1) and a rotor (2) arranged directly next to the coil (1), in which the rotor (2) consists of a steel ring (3 ), in which a first inner magnetic shell (5a) and a second inner magnetic shell (5b) lie opposite one another and on the outside a first outer magnetic shell (4a) and a second outer one
Magnetschale (4b) zueinander gegenüberliegend anliegen und bei dem der Stahlring (3) an seinem der Drosselklappe (9) zugewandten Ende (3') mit der Drosselklappenwelle (7) verbunden ist und bei dem im Bereich (6) des von der Drosselklappe (9) abgewandten Endes (3'') des Stahlringes (3) mittig ein Sensor (10) zur Positionserkennung der Drosselklappe (9) angeordnet ist.Magnetic shell (4b) lie opposite one another and in which the steel ring (3) is connected to the throttle valve shaft (7) at its end (3 ') facing the throttle valve (9) and in which the area (6) of the throttle valve (9 ) facing away from the end (3 '') of the steel ring (3), a sensor (10) for position detection of the throttle valve (9) is arranged in the center.
2. Direktantrieb nach Anspruch 1, bei dem die erste innere Magnetschale (5a) und die erste äußere Magnetschale (4a) sowie die zweite innere Magnetschale (5b) und die zweite äußere Magnetschale (4b) jeweils parallel zueinander auf derselben Hälfte des Stahlringes (3) angeordnet sind.2. Direct drive according to claim 1, wherein the first inner magnetic shell (5a) and the first outer magnetic shell (4a) as well as the second inner magnetic shell (5b) and the second outer magnetic shell (4b) each parallel to one another on the same half of the steel ring (3rd ) are arranged.
3. Direktantrieb nach Anspruch 2, bei dem die erste innere Magnetschale (5a) und die erste äußere Magnetschale (4a) sowie die zweite innere Magnetschale (5b) und die zweite äußere Magnetschale (4b) jeweils dieselbe magnetische Polung aufweisen.3. Direct drive according to claim 2, wherein the first inner magnetic shell (5a) and the first outer magnetic shell (4a) and the second inner magnetic shell (5b) and the second outer magnetic shell (4b) each have the same magnetic polarity.
Direktantrieb nach einem der Ansprüche 1 bis 3 , bei dem der Stahlring (3) im Bereich (6) des von der Drosselklappe (9) abgewandten Endes (31 ') eine ringförmige Nut (31 ' ') aufweist, in der die erste innere Magnetschale (5a) und die zweite innere Magnetschale (5b) am Stahlring (3) anliegen.Direct drive according to one of Claims 1 to 3, in which the steel ring (3) has an annular groove (3 1 '') in the region (6) of the end (3 1 ') facing away from the throttle valve (9) in which the first inner magnetic shell (5a) and the second inner magnetic shell (5b) rest on the steel ring (3).
Direktantrieb nach Anspruch 4, bei dem die erste innere Magnetschale (5a) und die zweite innere Magnetschale (5b) im Abstand a von 1 mm bis 3 mm zu dem die ringförmige Nut (3 ' ' ' ) begrenzenden Anschlag (3*) des Stahlringes (3) angeordnet sind.Direct drive according to Claim 4, in which the first inner magnetic shell (5a) and the second inner magnetic shell (5b) at a distance a of 1 mm to 3 mm to the stop (3 *) of the steel ring delimiting the annular groove (3 '' ') (3) are arranged.
6. Direktantrieb nach einem der Ansprüche 1 bis 5 , bei dem die erste innere Magnetschale (5a) und die zweite innere Magnetschale (5b) oder die erste äußere Magnetschale (4a) und die zweite äußere Magnetschale (4b) jeweils als Einzelteil angeordnet sind. 6. Direct drive according to one of claims 1 to 5, wherein the first inner magnetic shell (5a) and the second inner magnetic shell (5b) or the first outer magnetic shell (4a) and the second outer magnetic shell (4b) are each arranged as a single part.
EP03761406A 2002-06-27 2003-05-28 Direct electromagnetic drive for a throttle valve shaft in a throttle valve manifold Expired - Fee Related EP1518045B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10228856 2002-06-27
DE10228856A DE10228856A1 (en) 2002-06-27 2002-06-27 Direct drive for a throttle valve shaft in a throttle valve assembly
PCT/DE2003/001756 WO2004003363A1 (en) 2002-06-27 2003-05-28 Direct electromagnetic drive for a throttle valve shaft in a throttle valve manifold

Publications (2)

Publication Number Publication Date
EP1518045A1 true EP1518045A1 (en) 2005-03-30
EP1518045B1 EP1518045B1 (en) 2006-08-02

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EP03761406A Expired - Fee Related EP1518045B1 (en) 2002-06-27 2003-05-28 Direct electromagnetic drive for a throttle valve shaft in a throttle valve manifold

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US (1) US7100568B2 (en)
EP (1) EP1518045B1 (en)
JP (1) JP4012541B2 (en)
DE (2) DE10228856A1 (en)
WO (1) WO2004003363A1 (en)

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Also Published As

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DE50304486D1 (en) 2006-09-14
EP1518045B1 (en) 2006-08-02
JP2005534846A (en) 2005-11-17
US20050098153A1 (en) 2005-05-12
WO2004003363A1 (en) 2004-01-08
JP4012541B2 (en) 2007-11-21
US7100568B2 (en) 2006-09-05
DE10228856A1 (en) 2004-01-22

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