A vehicle becomes hybrid when it combines two or more power sources. In fact many people have probably owned a hybrids vehicle at some point. Hybrid vehicles are powered by two energy sources such as a combustion engine or fuel cell. These are the vehicles having the potential to be two to three times more fuel- efficient than conventional vehicles .In general hybrids capture energy lost during braking and return it to the on-board battery. Hybrid vehicle operates the alternative power unit to supply the power required by the vehicle, to recharge the batteries, and to power accessories like the air conditioner and heater. A hybrid can achieve the cruising range and performance advantages of conventional vehicles with the low-noise, low-exhaust emissions, and energy in dependence benefits of electric vehicles .In the coming years, hybrids can play a significant role in addressing several of the major problems faced by the world today: climate change, air pollution, and oil dependence. The motor can take care of city travel which poses stop and go conditions as well as power-consuming add-ons such as the A/C or power-windows and power-steering. At high speeds, the gasoline engine supplies power. When the car is in uniform motion or when it is decelerating, it generates power which charges the …show more content…
Most of the times other alternate source of energy for hybrid vehicles is electricity hence these are called electric hybrid cars. These cars combines both the power of gasoline engine with that of an electric motor. In mild hybrids, the gasoline engine provides the main source of power, and the electric motor provides additional power whenever needed. The second type of hybrid can be termed as a full hybrid, where the gasoline engine and the electric motor can operate the vehicle