Range Extended Electric Vehicle
Ricardo have combined their extensive experience in hybridisation, plug-in technology, low weight engines and vehicle refinement to benefit the new genre of RE-EVs
We have the ability to design, develop and integrate specific
- Engines and APUs (Auxiliary Power Unit)
- Transmission
- The other systems required by such applications (e-ancillaries...)
A number of key challenges affect range-extended electric vehicles in offering a practical package while also maximising electric vehicle operation. These have included the provision of acceptable performance when operating in extremely cold ambient conditions, in hilly terrain, at high speeds or in a battery deleted state to mitigate range anxiety.
Through the integrated, systems level engineering of the range extended electric vehicle powertrain, genuine synergies can be realised in terms of thermal performance and the sizing and specification of key components such as the electric motor, battery system, transmission and mechanical flywheel.
As the requirements from different manufacturers and their vehicle types, intended uses and mission profiles are so diverse, Ricardo have developed a simulation toolset to allow rapid optimisation of systems level components for RE-EV applications ensuring that customers receive the performance, driveability and useability they expect from their low carbon vehicle purchase.
Effect of RE-EV engine power level
- 1.5 tonne MPV over aggressive OEM Mission Profile
- Charge Sustaining mode –10 deg C cold start
- Target 25 km EV range - achieved 25.5km
- Charge sustained with 39.5 kW
Illustration of Ricardo simulation toolset output from which the 39.5kW value was deducted:
