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Proterra unveils ZX5 next-generation battery-electric transit bus

Green Car Congress

The ZX5 bus, Proterra’s fifth-generation battery-electric transit vehicle, features a new streamlined vehicle design and maximizes the amount of energy that can be stored on board the vehicle to increase power and range.

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MHI to supply 2 electric buses featuring MLIX Li-ion batteries for Kitakyushu City

Green Car Congress

In combination with a lighter body enabled by the partial adoption of carbon fiber construction, the new buses will be able to operate continuously over increased distances—up to 80 kilometers (50 miles) on a full charge, at a top speed of 85 km/h (53 mph). Load capacity is 72 passengers.

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GE demonstrates dual battery system for electric buses; pairing high-energy density sodium battery with high-power lithium battery optimizes performance and lowers cost

Green Car Congress

Currently, the bus has a top speed of 50 mph (80 km/h) and about a 60-80 mile (97-129 km) range under idealized conditions. GE researchers believe a dual system with high power and energy storage capacity could achieve the optimal electric driving range and acceleration requirements at a more practical size scale and cost for larger vehicles.

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Citroën to show Cactus concept with Hybrid Air powertrain

Green Car Congress

Hybrid Air is a full-hybrid solution combining compressed air and hydraulic power, with no battery required for energy storage. Hybrid Air combines a PureTech gasoline engine, a compressed air energy storage unit, a hydraulic pump/motor unit and an automatic transmission with an epicyclic gear train. Earlier post.).

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Volvo Car and Flybrid vehicle testing showing flywheel KERS can deliver fuel savings up to 25%, with significant performance boost

Green Car Congress

Under braking, kinetic energy which would otherwise be lost as heat is transferred from the wheels to the KERS, and is used to spin a 6 kg carbon fiber flywheel at up to 60,000 revs per minute. The flywheel’s stored energy is sufficient to power the car for short periods. This has a major impact on fuel consumption.

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BMW deploying iX5 Hydrogen pilot fleet

Green Car Congress

In coasting overrun and braking phases, the motor also serves as a generator, feeding energy back into a power battery. The hydrogen needed to supply the fuel cell is stored in two 700-bar tanks made of carbon-fibre reinforced plastic (CFRP). kg/100 km Range in the WLTP cycle: 504 km (313 miles) Production at Munich pilot plant.

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Audi unveils e-gas project: synthetic methane from the methanation of green hydrogen; series production of CNG models in 2013 powered by e-gas

Green Car Congress

Audi says that its e-gas project provides an answer to the question as to how green power can be efficiently stored, irrespective of location. If there are strong sea winds, for instance, then surplus power supplies can be converted to e-gas and stored in the largest available energy-storage system: the public gas network.

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