MAGNETOELASTIC TORQUE SENSOR SYSTEM FOR DRIVE TRAIN, DRIVE TRAIN, METHOD OF MEASURING TORQUE IN DRIVE TRAIN, METHOD OF OPERATING DRIVE TRAIN AND METHOD OF MANUFACTURING PRIMARY SENSOR UNIT

摘要

PROBLEM TO BE SOLVED: To provide a sensor system for measuring a torque generated in an engine.SOLUTION: A magnetoelastic torque sensor system for a drive train is described which comprises a primary sensor unit 14 having a magnetoelastic portion 40 and a secondary sensor unit 16 having a magnetic sensitive portion 18. A magnetoelastic material generates a magnetic field due to the torque contribution amount of each cylinder 22 in an engine 20. A signal provided by the secondary sensor unit 16 is processed by an electronic control unit 32. The electronic control unit 32 in particular controls and/or reads out at least one magnetic sensitive portion 18 of the secondary sensor unit 16 and generates a signal which correlates with stress applied on the primary sensor unit 14.SELECTED DRAWING: Figure 1