Dyno One Projects: Low Inertia Offset Hybrid Dyno

Customer: Cummins

Overview

The Cummins tech center in Charleston, NC required expanded capabilities for engine testing. A dyno was required with minimal inertia to allow for low speed and varying test cycles while still allowing peak power test capability. A 100 hp ac motor was used to counteract the large inertial forces of the eddy current dyno, while allowing continued use of the eddy current dyno’s large power absorption capacity. Additionally, when not needed for inertia offsetting, the 100 hp motor can regenerate its full power capacity, partially offsetting power consumption of the test stand.

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Key Features

  • 1500 hp EC + 100 hp AC
  • Tandem Dyno system: AC + EC
  • Inertia offset testing
  • Partial regenerative braking
  • Partial motoring

Equipment Supplied

  • 1500 hp Eddy Current Dyno
  • 100 hp AC motor
  • Coupling
  • Locking calibration hub
  • Torque Transducer
  • Stands/bases
  • Guarding
Low Inertia Offset Hybrid Dyno drawing