Electrification specialist Equipmake showcased its latest pure-electric bus technology, in the shape of a zero-emission version of the New Routemaster double-decker bus.
Unveiled on Equipmake’s stand A30 at the Euro Bus Expo – held at the NEC, Birmingham from 1-3 November – the clean, green New Routemaster has been “repowered” by Equipmake. This process sees its hybrid drivetrain completely replaced with Equipmake’s cutting-edge Zero Emission Drivetrain (ZED), which uses 95% British-built component content.
With pre-service trials already started in London, operated by Metroline, the electric version of the New Routemaster will continue to be assessed over the next six months. The programme will deliver valuable test data as Transport for London (TfL) continues to evaluate a range of clean technologies, including state-of-the-art repower systems such as Equipmake’s ZED. Charging infrastructure at Metroline’s Holloway depot, alongside battery data analytics for the bus, is being provided by Zenobē, the EV fleet and battery storage specialist.
The repowered New Routemaster, developed by Equipmake at its base in Snetterton, Norfolk, features a 400kWh battery enabling an expected in-service range of 150 miles – more than enough for a day’s running. The development of the all-electric New Routemaster has come about thanks to a programme part funded by the Advanced Propulsion Centre (APC).
Over the coming months, Equipmake will be trialling additional repowered buses with other bus operators across the UK.
The ZED which features in the New Routemaster can be applied to any existing hybrid or diesel bus, quickly upgrading the vehicle with a state-of-the art battery drivetrain.
One of the ZED’s most important features is Equipmake’s patented ultra-efficient thermal management system. This maintains all three of the ZED’s key components – the battery pack, motor, and inverter – at an optimum operating temperature, maximising vehicle range.
Featuring an advanced water-glycol cooling circuit, the system has the added benefit of providing interior heating during cold conditions with captured thermal energy. When the battery is depleted at the end of a complete duty cycle, it can be recharged at the depot overnight via a CSS DC charging point.
Under the skin, the New Routemaster also features Equipmake’s HTM 3500 electric motor. Seamlessly integrated into the prop shaft without the need for a separate transmission, the motor is precisely engineered to meet the demanding requirements of a fully-laden double-decker bus by producing 3,500Nm torque at a motor speed of just 1,000rpm and delivering 400kW maximum power.
Applicable to all buses
Equipmake’s repower technology programme involves an inspection of each bus to ensure its adaptability to the company’s unique, scalable modular electric chassis. Once its suitability is verified, the process itself is quick, with up to five repowers a week being able to be completed, ensuring buses are off the road for as little time as possible.
Each repower is tailored to specific operator requirements, with service routes simulated to ensure the correct battery power level is selected for optimum performance and efficiency, and guaranteed driving ranges of 150 to 250 miles achievable. This is more than sufficient for a complete duty cycle, allowing buses to be recharged overnight.
Repowering buses with Equipmake’s technology also means a new lease of life for ICE vehicles which might otherwise be scrapped as operators transition to emission-free driving. Instead of writing off a whole vehicle, repowering means the body and systems are effectively recycled – bringing huge environmental gains given that the manufacturing of a vehicle is one of the more polluting and energy-intensive parts of its lifecycle.
As well as bringing environmental benefits, Equipmake’s repower programme makes sense from a cost perspective, with each conversion coming in at less than half the price of a new electric bus. And with most buses expected to remain in service for 14 years or beyond, operators can still make significant efficiencies by repowering a bus halfway through its working life.
Earlier this year, Equipmake was awarded a contract by First Bus to fully convert 12 Optare Versa buses from existing EV Generation One systems to Equipmake’s ZED.
Conversion work has been carried out on the first Versa bus at Equipmake’s Snetterton headquarters, with the first of the 12 buses expected to be back in operation on York’s roads this month.
