Toyota Prius

My name is Rodolfo Silva and i´m 34 years old.
Group: ST 04/10


Until the introduction of model Prius, all cars were moved by fuel, diesel or electric motors. Fuel or diesel cars have an internal combustion engine that creates movement at the transmission, which by its turn creates the spinning movement of the wheels. By the other hand, electric car’s have a set of batteries that supply the engine, which moves the transmission and the wheels.
The idea of creating a hybrid system comes from the wish of combining the best of the electric motor with the best of the combustion engine. A hybrid system uses a combustion engine and an electrical motor for propulsion. When the vehicle stops, the petrol engine also stops instead of staying at the ralenti point, wasting energy.
To pull out or when using low speed, the car uses the electric motor, fed by the battery of high voltage. At elevated speeds, the combustion motor moves the vehicle, but the system gives priority for the motor of combustion to work only in the rotations in which it is more efficient. When the power is not sufficient, the electric motor compensates that lack, receiving energy of the HV battery.
If the vehicle moves in a stabilized speed, the motor of combustion will be able to produce more energy than it arranges necessary. In this case, the excess energy is used to produce electricity, reloading the battery. During the slowing down, the motor stops automatically to avoid wastes of energy. And during a slowing down using the brake, the lethargy of the car itself is used to produce electric energy, which is stored in the HV battery.