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Comparison of the measuring principles

Comparison of the measuring principles. Measuring of reaction torque alignement not critical simple overload protection easy to calibrate, shaft does not have to be opened low dynamic response (typically up to 20Hz) dyno must be on bearings (friction, maintenance).

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Comparison of the measuring principles

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  1. Comparison of the measuring principles • Measuring of reaction torque • alignement not critical • simple overload protection • easy to calibrate, shaft does not have to be opened • low dynamic response (typically up to 20Hz) • dyno must be on bearings (friction, maintenance) 06.09.2014, Page. 1 Hottinger Baldwin Messtechnik GmbH Klaus Weissbrodt

  2. Comparison of the measuring principles • Measuring of in-line torque • measuring of “true torque” in the shaft • high dynamic response (typically up to 1kHz) • dyno is footmounted, no bearings • alignement critical • overload protection difficult • calibration not easy, shaft has to be opened 06.09.2014, Page. 3 Hottinger Baldwin Messtechnik GmbH Klaus Weissbrodt

  3. Comparison of the measuring principles dynamic torque average torque (low pass 20Hz) 5.3 l diesel engine, max. speed 1200 min-1 Shock factor (combustion engines: 2 ... 10) 06.09.2014, Page. 4 Hottinger Baldwin Messtechnik GmbH Klaus Weissbrodt

  4. Comparison of the measuring principles 06.09.2014, Page. 5 Hottinger Baldwin Messtechnik GmbH Klaus Weissbrodt

  5. Comparison of the measuring principles 06.09.2014, Page. 6 Hottinger Baldwin Messtechnik GmbH Klaus Weissbrodt

  6. Comparison of the measuring principles Torque measurement at a transmission • Reaction force at lever arm • In-line torque measurement 06.09.2014, Page. 7 Hottinger Baldwin Messtechnik GmbH Klaus Weissbrodt

  7. 13 litre diesel engine startup 6000 4000 2000 0 0 1 2 3 4 5 6 -2000 -4000 -6000 Time (s) Comparison of the measuring principles Effect of a long drive shaft 06.09.2014, Page. 8 Hottinger Baldwin Messtechnik GmbH Klaus Weissbrodt

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