Hydrodynamic component

Abstract

The invention relates to a hydrodynamic component comprising at least two elements which form a working chamber therebetween and which comprises a primary wheel and a secondary wheel. A working medium which can be introduced into the working chamber allows torque to be transmitted between said elements. At least one of the elements is arranged in a rotationally fixed manner on a shaft. The hydrodynamic component comprises a device for detecting a variable characterising at least directly the transmitted torque and/or the rotation of the shaft. According to the invention, the shaft is at least designed to have at least two sections which are at an axial distance from each other and which are made of a ferromagnetic material and is provided with a magnetic field which is rotationally stable with the respective section. Magnetic field sensors are arranged in areas corresponding to the at least two sections.

1 - 18 . (canceled) 
     
     
         19 . A hydrodynamic component
 comprising at least two elements which form a working chamber therebetween, which comprises a primary wheel and a secondary wheel, and which via a working medium which can be introduced into the working chamber transmit a torque between said elements,   at least one of the elements is arranged in a rotationally fixed manner on a shaft,   comprising a device for detecting a variable characterizing at least indirectly the transmitted torque and/or the rotational speed of the shaft,   characterized in that   the shaft at least consists of at least two sections which are at an axial distance from each other and which are made of a ferromagnetic material and are provided with a magnetic field configured to be rotationally fixed with the respective section and that   magnetic field sensors are arranged in areas corresponding to the at least two sections.   
     
     
         20 . The hydrodynamic component according to claim  1 , characterized in that at least one of the sections is provided with a permanent magnetic field. 
     
     
         21 . The hydrodynamic component according to claim  1 , characterized in that the magnetic field of at least one section is configured as a coded magnetic field. 
     
     
         22 . The hydrodynamic component according to claim  1 , characterized in that the magnetic field of at least one section has at least two sub-regions which are magnetically different from one another in the circumferential direction. 
     
     
         23 . The hydrodynamic component according to claim  1 , characterized in that the magnetic field sensors are configured to be contact-free with respect to the shaft. 
     
     
         24 . The hydrodynamic component according to claim  1 , characterized in that the magnetic field sensors are configured in the form of coils. 
     
     
         25 . The hydrodynamic component according to claim  1 , characterized in that the magnetic field sensors surround the shaft. 
     
     
         26 . The hydrodynamic component according to claim  1 , characterized in that the shaft is configured as a hollow shaft, wherein at least one of the magnetic field sensors is disposed in the interior of the hollow shaft. 
     
     
         27 . The hydrodynamic component according to claim  1 , characterized in that at least one of the magnetic field sensors is disposed in the region of a sealing element surrounding the shaft. 
     
     
         28 . The hydrodynamic component according to claim  1 , characterized in that at least one of the magnetic field sensors is disposed in a shaft sealing ring surrounding the shaft. 
     
     
         29 . The hydrodynamic component according to claim  1 , characterized in that at least one of the magnetic field sensors is disposed between the shaft sealing rings surrounding the shaft. 
     
     
         30 . The hydrodynamic component according to claim  1 , characterized in that at least one of the magnetic field sensors is disposed in the region of a holder for a sealing element. 
     
     
         31 . The hydrodynamic component according to claim  1 , characterized in that a shaft, seal comprises at least one shaft sealing ring and a piston ring connected via a support element to the shaft sealing ring, wherein at least one of the magnetic field sensors is disposed on the support element. 
     
     
         32 . The hydrodynamic component according to claim  1 , characterized in that in one of the sections the shaft is configured at one or more locations distributed around the circumference of the shaft such that a mechanical loading of the shaft causes a stress gradient. 
     
     
         33 . The hydrodynamic component according to claim  14 , characterized in that the locations comprise stress-relief holes for a lubricant from a region between two sealing elements. 
     
     
         34 . The hydrodynamic component according to claim  14 , characterized in that the locations comprises an edge or groove running axially to the shaft. 
     
     
         35 . The hydrodynamic component according to claim  1 , characterized by its configuration as a hydrodynamic coupling or as a hydrodynamic retarder. 
     
     
         36 . The hydrodynamic component according to claim  1 , characterized by its configuration as a hydrodynamic converter. 
     
     
         37 . The hydrodynamic component according to claim  2 , characterized in that the magnetic field of at least one section is configured as a coded magnetic field. 
     
     
         38 . The hydrodynamic component according to claim  2 , characterized in that the magnetic field of at least one section has at least two sub-regions which are magnetically different from one another in the circumferential direction.