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 dynamic 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 4WD Powertrain Test System.

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