Hybrid Cars or Electric Cars ???

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(Wikipedia) A hybrid electric vehicle is an alternative fuel vehicle driven by electricity from batteries and, alternatively, an internal combustion engine that drives a generator.

Normally, the engine can also drive the wheels in directly. In designing a hybrid car, the engine heat is the energy source that is used as a last option, and provides an electronic system for determining which engine to use and when to do it.

In the case of gasoline-electric hybrids, when the internal combustion engine works, what does with its optimum efficiency. If it generates more energy than necessary, the electric motor is used as a generator and charging the batteries of the system.

In other situations, it works only the electric motor, feeding on the energy stored in the battery. In some it is possible to recover the kinetic energy under braking, which is usually dissipated as heat in the brakes, turning it into electricity. This kind of brakes are often called "regenerative".

The combination of a combustion engine always operates at peak efficiency, and energy recovery braking (especially useful in the city), makes these vehicles achieve better returns that conventional vehicles. All electric cars use batteries charged by an external source, which causes problems for them autonomy of operation without recharging. This complaint is avoided with hybrid cars.

The great problem existing in which the electric motor to replace the heat on the vehicle is the ability of accumulating power, which is very low compared to the ability of accumulation of energy in the form of fuel. Approximately 1 kg of batteries can store the energy equivalent of 18 grams of fuel, although this calculation does not take into account the limited energy of that energy in a combustion engine, compared with an electric motor. Even so this represents a major technological barrier to an electric motor.

However, the energy storage capabilities in a mobile vehicle forcing designers to use a complicated multi-channel energy, and hybrid, to replace a simple and cheap energy chain classic tank-engine-wheels. Electricity, energy and currency exchange, facilitating the use of many different technologies, as the electric motor consumes electricity, regardless of the source used to generate it.

While the surcharge for a hybrid vehicle is repayable over the life of a car, the consumer rarely chooses to make a strong initial investment in a vehicle of this type. In contrast, in a medium-term future, in which the price of oil will shoot for its scarcity and the only way to fill this gap is increasing efficiency and using biofuels (higher cost of production that oil at present) The hybrid vehicle will pass just to be a luxury for wealthy, and environmentalists are convinced, the only viable road transport.

Thanks to the use of hybrid technology achieves reductions in consumption up to 80% and 40% in city road, in comparison between hybrid and conventional vehicles of similar benefits. Pollutant emissions will have a parallel.

(Comment from Oscar Granda)

For economic and ecological reasons, the capacity of the batteries are still a limiting factor for the autonomy of electric cars that require points of reload for certain distances according to your requirement and use. Given that reality, hybrid cars are currently the best option, since it achieved great levels of efficiency and autonomy, providing greater opportunities, to conveniently combine the technology of electric car technology with the car to fossil fuels.