Method and means for monitoring torque in a hydraulic power unit
AssigneeSauer-Danfoss Inc.
InventorMichael D Gandrud
Life of this patent
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Abstract
The present invention is directed towards a hydraulic power unit including a housing, an internal hydraulic power means, an external hydraulic power means, and a mechanical power shaft associated with the hydraulic power means. In addition, the hydraulic power unit comprises a transducer adapted for measuring torque mounted in the housing in a non-contact relation to the mechanical power shaft adjacent a portion of the shaft imposed with a magnetic field. The hydraulic power unit further comprises a controller associated with the transducer to monitor the measured torque and adjust the operation of the hydraulic power unit accordingly.
Claims5
A hydraulic power unit including a housing, an internal hydraulic power means, an external hydraulic power means and a mechanical power shaft associated with the hydraulic power means, comprising:
- a transducer adapted for measuring torque mounted in the housing in a non-contact relation to an output power shaft adjacent a portion of the output power shaft imposed with a magnetic field, and
- a controller associated with the transducer to monitor the measured torque.
A hydraulic power unit including a housing, a hydraulic power means, an input power means and an output power shaft associated with the internal hydraulic power means, comprising:
- a transducer adapted for measuring torque mounted in the housing in a non-contact relation to a mechanical power shaft adjacent a portion of the mechanical power shaft imposed with a magnetic field,
- a controller associated with the transducer to monitor the measured torque, and
- the controller associated with the input power means to modify the magnitude of input power transmitted to the hydraulic power means within predetermined torque parameters.
A method for monitoring the torque imposed on a mechanical power shaft of a hydraulic power unit that includes a housing, a hydraulic power means, an input power means and an output power means associated with the hydraulic power means, comprising:
- placing a transducer adapted for measuring torque in the housing in a non-contact relation to the mechanical power shaft adjacent a portion of the mechanical power shaft imposed with a magnetic field, and
- providing a controller associated with the transducer to monitor the measured torque.
Dependencies are inferred from the claim text.