Hyundai Nexo - Fuel Cell System Evaluation

Content Fuel Cell System Testing:

- Measurement of voltage, current, temperature, pressure, volume flow based on P&ID plan 

- Data acquisition system: INCA

- Measurement of legislation cycles (WLTP & NEDC) on roller dynamometer test bench at: 

  • official, ambient temperature (25°C / 23°C)

  • cold start (-7°C)

  • warm condition (35°C)

- Measurement on roller dynamometer test bench at different low temperatures and driving modes (Frost-start characterization)

- Fuel Cell stack & system mapping and efficiency investigations: 

  • Generation of fuel cell stack polarization curves via successive stack load increase (velocity increase) 

  • Starting from 0 km/h to max. velocity, with each load step being hold until stabilization of the systems temperatures, flow levels and output power is reached

  • Start up and shut down investigations by measurement of the different components' operation procedures

- Fuel Cell System frost start characterization at -30°C:

  • Pre-conditioning of the vehicle in a specific climate chamber

  • Gas pedal tip-in and measurement of the energy flows to determine the systems performance related to operation temperature

Deliverables:

- Fuel Cell System and Fuel Cell Stack investigations regarding:

  • Performance, efficiency, operation strategy, heat up strategy, start up and shut down procedure

- Analysis of the Fuel Cell systems operation under frost start conditions

- Report in *.pdf-format

- Raw Data