HYBIRD ELECTRIC VEHCLES
A hybrid electric vehicle (HEV) is a type of hybrid vehicle and electric vehicle which combines a conventional internal combustion engine(ICE) propulsion system with an electric propulsion system. The presence of the electric powertrain is intended to achieve either better fuel economy than a conventional vehicle or better performance. There are a variety of HEV types, and the degree to which they function as EVs varies as well. The most common form of HEV is the hybrid electric car, although hybrid electric trucks (pickups and tractors) and buses also exist.
There are three basic types of plug-in electric vehicles:
- Plug-in Hybrid Electric Vehicle (PHEV)
- Extended-Range Electric Vehicle (EREV)
- All-Battery Electric Vehicle (BEV)
A Plug-in Hybrid Electric Vehicle is similar to conventional hybrids, but they have a larger battery that can be charged by plugging into an electric outlet. PHEVs are usually designed with an electric-only range of 10 to 40 miles, blended with a gasoline engine to achieve higher speeds and loads. After the electric-only range is exceeded, the vehicle continues to operate as a hybrid vehicle using a gasoline engine or generator.
A typical Extended-Range Electric Vehicle has an all-electric range of about 40 miles. After the battery has been discharged, a gasoline-driven generator powers the vehicle for 300-plus miles of ‘extended-range’ driving.
A typical Battery Electric Vehicle is powered entirely by electricity from the utility grid. Current Battery Electric Vehicles have a range of 80 to120 miles or more.
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