Alexander Dennis Limited (ADL) and BAE Systems have delivered the first 39 Enviro400H double-deck buses with Series-E hybrid technology to launch customer Go-Ahead London.
Using ultra-capacitor energy storage to further reduce lifecycle costs, these next-generation buses have achieved Ultra Low Emission Bus certification with 37% lower greenhouse gas emissions than conventional diesel buses.
Series-E maintains the series hybrid system architecture – proven in over 1,300 existing Enviro400H hybrid buses – in which the diesel engine only acts as generator to produce energy for the electric drive.
Designed to last the lifetime of the bus, the ultra-capacitor storage will reduce total cost of ownership by not requiring mid-life replacement.
Due to this and other improvements, a 53% reduction in the cost of parts and consumables is predicted over a ten-year period.
Richard Harrington, Go-Ahead London engineering director, says: “With 245 Enviro400H already in our fleet, we know ADL and BAE Systems’ Enviro400H as a reliable bus that helps us improve London’s air quality.
“This experience gave us the confidence to place a volume order for the new Series-E version, and we look forward to recognising its improved fuel economy and lower cost of ownership.”
There is no change for drivers as the new system matches its predecessor’s performance. Passengers continue to enjoy smooth acceleration and braking, while pedestrians and local residents continue to benefit from the arrive-and-go mode which turns off the Euro VI diesel engine at low speed and when stationary at bus stops, cutting out noise and emissions.
Go-Ahead London is the pioneering launch customer for this next generation Enviro400H, with the first 39 buses entering service on Transport for London route 36 between Queen’s Park and New Cross Gate. Another 26 are on order for routes 77 and 87.
Colin Robertson, ADL chief executive, said: “We are delighted that Go-Ahead London has taken the bold step to embrace innovation with these orders. We appreciate the trust placed in us and our technology partner BAE Systems.
“Backed up by our class-leading aftermarket support, these hybrid buses will be an excellent value addition to the Go-Ahead London fleet and we look forward to realising these benefits with further operators.”
Matthew Lawrence, BAE Systems business development manager, added: “With Ultra Low Emission Bus certification, the Enviro400H with Series-E technology and ultra-capacitor energy storage not only suits London operators but gives bus companies around the country the opportunity to apply for Department for Transport funding with a proven solution supported by existing infrastructure.”
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