Exact(5)
The venerable Integrated Motor Assist system, as seen in various guises on cars like the Insight and Civic Hybrid, relies mainly on the gasoline engine, drawing on the electric motor for extra power during acceleration.
The car, which will come on the market in 2013 or 2014 and cost more than 100,000 euros ($140,000), will use the electric motors to provide power during acceleration.
The piston engine is typically the more muscular of the two sources, sized to provide most of the power during acceleration, while the electric motor is generally smaller in terms of output, usually providing some electric-only operation.
"That means the fuel cells only need to supply 20% of the power during acceleration," Spowers notes.
High-power density is also required to capture the regenerative braking energy and to deliver the peak power during acceleration.
Similar(55)
The system consisted of a 150 W PEMFC stack powered by hydrogen/air, a tank of metal hydrides of AB (TiFe) alloy type with a capacity of 300 standard litres, for storing hydrogen, and an electronic power device based on electrolytic capacitors, to supply peak power demands during acceleration and start up of the vehicle.
A problem of peak power in DC-electrified railway systems is mainly caused by train power demand during acceleration.
Zinc Bromine batteries will be employed to provide the continuous power for normal driving while ultracapacitors will be employed to provide peak power demand during acceleration and to take regenerative braking energy efficiently during deceleration.
The four-seat i8 can go 20 miles solely on battery power and will theoretically travel more than 100 miles on a gallon of gas when the engine and batteries are working together, with the electric motor providing a power boost during acceleration.
In Ref. [10], a 25% reduction of the overall railway electricity cost was achieved by reducing substation peak power during train acceleration.
These values are very high for cyclic activity, supporting the suggestion that muscles may be operating at maximal power during maximal acceleration at high speeds.
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