Low Cost Mechanical Bus KERS en route to production in mid 2016
The trial was conducted on a standard bus route in Gillingham, Kent from March 2015. It successfully demonstrated the performance of the Flybrid KERS under real-world operating conditions including the capture, storage and release of energy from the brakes and the drivability of the system. The learnings from the trial have already proven invaluable in selecting the operating strategy for the volume production system, which will be a second generation design.
Already undergoing detailed testing on rigs and in a new Euro VI StreetLite bus, this new KERS design is intended to further improve bus fuel efficiency and reduces the KERS weight and cost, helping to improve the bus operator payback.
In collaboration with its global Tier 1 manufacturing partner, Torotrak is on track to commence production of bus KERS systems from mid 2016 onwards. Tier 2 suppliers across the UK and other parts of the EU have been nominated and the manufacture of production tooling is currently underway.
Adam Robson, Torotrak Group CEO, said: “This is a very exciting time for the Group with the bus KERS project that started in 2012 going into commercial production from the middle of this year. I am delighted with the progress we have made and we look forward to delivering our first systems to Wrightbus during Q3 2016.”
The Flybrid KERS for buses is a highly efficient and robust hybrid technology, ideal for the long service life and repeated stop-start duty cycle of public service buses. Using common materials and manufacturing methods, and removing the requirement for replacement batteries during service life the flywheel-based technology can offer exceptional value and an opportunity for widespread hybridisation.
|The steel and carbon fibre flywheel weighing 8.5kg |
spins at up to 30,000 rpm.
|The KERS unit is very compact, allowing fitment into the|
rear engine bay
Ian Tarran, Engineering Director at Arriva UK Bus commented: “As one of the largest bus operators in the UK with over 5,900 buses, improving the efficiency of our bus fleet and reducing emissions is important to us and our customers. Having collaborated with Torotrak and Wrightbus on the flywheel project since 2012 we are looking forward to installing Flybrid KERS across our bus fleet from Q3 2016 onwards.”
Torotrack are working on many other transport modes including cars, trucks and off road vehicles. http://www.torotrak.com/