High-Performance 2E Hybrid Powertrain Engine Test Cell at Millbrook with engineers performing engine testing and hybrid powertrain testing

High-Performance 2E Hybrid Powertrain Test Cell

This test cell is ideally suited to testing high-performance high-speed engines and complex hybrid powertrain development testing.

It has two wheel-mounted, ultra-high dynamic AC dynamometers and a 300kW battery simulator. It is large, allowing for additional equipment to be added as required, and self-contained, including its own control room. The 40,000L fuel tank is split into two bulk volumes.


Hybrid Powertrain Test Facility

  • System nominal power absorption 700kW
  • Dyno inertia 0.84 kgm²
  • 2x ultra-dynamic synchronous motors; 350kW, 3,500Nm (+20% overload). Maximum speed 3,000 min-1
  • Dynamic torque changes performed at minimum 0.13ms
  • 300kW Battery Simulator (1,000V/600A)
  • ETAS Inca ECU calibration tools with iLinkRT real-time interface
  • Modelling and Simulation realised through Mathworks and dSPACE software integration
  • Cell and engine intake air control between 20°C to 35°C +/- 2°C
  • Engine coolant control to +/- 1°C
  • Test bench intercooler temperature control to +/-1°C
  • AVL Fuel Exact measurement with temperature conditioning to +/-0.02°C
  • Measurement of 70 temperatures and 32 pressures
  • Additional analogue and digital input/output channels available


  • IC or hybrid emissions development, including simulation of real world and regulated cycles
  • Test of powertrain with a virtual battery using the battery simulator
  • Powertrain control strategy development
  • Hardware integration testing
  • Development of low maturity hardware
  • Development of 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

Contact us now for more information on the high-performance hybrid powertrain test cell.

Millbrook has 28 engine test cells in the UK covering a diverse range of capabilities, with latest test cell automation software and hardware and up to 2.1MW dynamometers.

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