(12 Oct 2014, 9:38 am)Dan wrote Think that's something different. Our resident from Corbridge may have a greater knowledge than me, given that he'd done his research in the past about the Fab56/Cobalt Volvo B9 modifications.

The eFan Micro Hybrid System is a totally different proposal to the 'flywheel' proposal.


It simply replaces the hydraulically-driven cooling fan (and the combined water/air intake charge cooler) with electrically-powered cooling fans working on separate air-charge cooler and water radiator.

In simple terms, it replaces the drag required to constantly power the hydraulic fan from 20 kW to 3 kW with electric fans that can be switched on and off as required. This will reduce the fuel consumption.

For those wanting more information, see:-
http://northeastbuses.co.uk/forum/showthread.php?tid=925&pid=66549#pid66549

The flywheel proposal system uses an electrically-driven high speed flywheel made of carbon fibre to store the energy generated by a bus as it slows down to stop. It then uses the stored energy to power an electric motor which helps accelerate the bus back up to speed, generating fuel savings of more than 20 per cent.