Endurance test bench for vehicle alternators

Endurance test bench for vehicle alternators

 Fields of application

  • Validation of the functionality and fatigue strength of four alternators subjected to certain loads and temperatures
  • Definition of application-specific test cycles with predetermined load, torque and temperature collectives
  • Direct comparative tests for multiple test items (operated in parallel) and recording of measured values for analyses

Test bench architecture and modules

  • Mechatronic integration of different types of alternators
    • Parallel operation of up to four different types of alternators
    • Close-to-application mechanical fixtures for different types of alternators
    • Interfaces: Analogue/digital or bus systems (e.g. LIN interface)
  • Belt drive
    • Close-to-application transmission and torques
    • Adjustable, monitored belt tensions
    • Dynamically configurable drive to simulate a vehicle's combustion engine
  • Load simulation
    • Dynamically configurable electronic loads of up to 7 kW (resistance or power mode)
    • Energy recovery to reduce operating costs
  • Temperature simulation
    • Temperature range: -40 … +140°C
    • Support for the parallel operation of two alternators at room temperature and variable temperature conditions
    • Temperature chamber incl. lift and guide rails for easy mounting
  • Metrology to record
    • Current, voltage and torque outputs of the test items
    • Temperatures of the chamber and the test items
  • Automation
    • Definition of application-specific test cycles with predetermined load, torque and temperature collectives
    • Error control with individual limits for test items, belt drive, load simulation and the climatic chamber