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A prototype AC Propulsion tzero electric car with an external range-extender or genset trailer, 1999. A range extender is a fuel-based auxiliary power unit (APU) that extends the range of a battery electric vehicle by driving an electric generator that charges the vehicle's battery.
ATEGs allow the automobile to generate electricity from the engine's thermal energy rather than using mechanical energy to power an electric generator. Since the electricity is generated from waste heat that would otherwise be released into the environment, the engine burns less fuel to power the vehicle's electrical components, such as the ...
Harvesting that heat energy using a thermoelectric generator can increase the fuel efficiency of the car. Thermoelectric generators have been investigated to replace the alternators in cars demonstrating a 3.45% reduction in fuel consumption. [33] Projections for future improvements are up to a 10% increase in mileage for hybrid vehicles. [34]
Disadvantages of a diesel electric transmission are the potential complexity, cost, and decreased efficiency due to energy conversion. [dubious – discuss] Diesel engines and electric motors are both known for having high torque at low rpm, this may leave high rpm with little torque. Typically a petrol engine is paired with electric motors for ...
The SDP45 is a six-axle, C-C, 3,600-horsepower (2,680 kW) diesel-electric locomotive built by General Motors' Electro-Motive Division of La Grange, Illinois.It was a passenger-hauling version of the SD45 on a stretched locomotive frame with an extended, squared-off long hood at the rear, aft of the radiators, giving space for a steam generator for passenger train heating.
Thus, the diesel truck is using 3.37 times the amount of energy that the electric truck is using. Therefore, the only variables that are stopping commercial use of electric trucks are original vehicle cost and driving range, owing to the high battery pack cost and low specific energy. [27]
Conventional shock absorbers simply dissipate this energy as heat. In electric or hybrid vehicles, electricity generated by the shock absorber can be used to extend battery life by powering the drivetrain. In non-electric vehicles, it can power accessories like air conditioning. While several systems have been developed, they are still in ...
Then, energy is taken up by converting the hydrogen back into electricity within fuel cells. " 'This means that only a quarter of the initially available energy reaches the electric motor' ... Such losses in conversion don't stack up well against, for instance, recharging an electric vehicle (EV) like the Nissan Leaf or Chevy Volt from a wall ...