4WD Powertrain Test System Facility at Millbrook for Emissions Testing and Electric and Hybrid Powertrain Integration

4WD Powertrain Test System

Millbrook's 4WD Powertrain Test System is ideally suited to advanced development of hybrid and electric powertrains, transmissions and advanced vehicle control strategies.

It has four hub-mounted high dymanic dynamometers and a 350kW battery
simulator. It can also be used to test laid-out powertrains (PIL) or full
vehicles (VIL).


  • Vehicle-in-the-Loop (VIL) simulation and test capability
  • Powertrain-in-the-Loop (PIL) simulation and test capability
  • IC or hybrid emissions development, including simulation of real world and regulatory cycles
  • Electric vehicle and battery management system development
  • Powertrain testing with a virtual battery using the battery simulator
  • Powertrain control strategy development
  • Development of ABS and traction control systems using fully integrated tyre slip models
  • Mule use of components to simulate future vehicles
  • Condensed testing on a rig as opposed to track or road-based testing
  • Highly repeatable measurement of fuel economy, emissions and energy consumption
  • Fuel and lubricant trials in a highly repeatable environment
  • EDU and e-axle functional development and durability

4WD Powertrain Test System Facility Specifications

  • System nominal power absorption 750kW
  • Dyno inertia 0.84kgm²
  • 4x ultra-dynamic synchronous motors; 350kW, 3,500Nm (+20% overload)
  • Transient overload to 900kW/8,400Nm
  • Maximum speed 3,000 min-1
  • 350kW Battery Simulator (1,000V/1,000A)
  • Cell and engine intake air control between 18°C and 25°C +/- 1°C
  • Engine coolant control to +/- 1°C
  • Test bench intercooler temperature control to +/-1°C
  • AVL Fuel Exact measurement with temperature conditioning
  • Measurement of 70 temperatures and
    32 pressures
  • Dual stream raw emissions bench
  • Full vehicle or system testing
  • 160km/h WLTP vehicle cooling fan

Contact us now for more information on Millbrook's 4E Powertrain Test Cell.

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