The Beginner's Guide to hybrid electric vehicle (3)
We still focus on hybrid electric vehicle (HEV) for the beginners. The previous article tells us hybrid electric vehicles (HEVs) can be classified according to the way in which power is supplied to the drivetrain. And we have one article for the beginners of hybrid electric vehicles, with brief information for hev.
The hybrid-electric vehicle (HEV) produces less emissions from the conventional internal combustion engine (ICE) than a comparably-sized gas-powered car, as the hybrid electric vehicle (HEV)'s gasoline-powered engine is usually smaller than a pure fossil-fuel vehicle, and if not used to directly drive the vehicle, can be geared to run at maximum efficiency, further improving fuel economy.
Let's check the types by degree of hybridization.
1. Full hybrid. Also called a strong hybrid sometimes. Full hybrid electric vehicle is a vehicle that can run on just the engine, just the batteries, or a combination of both. The examples of full hybrids include Ford Escape Hybrid, Ford Fusion Hybrid, and popular Toyota Prius.
2. Mild hybrid. As the name shows, this form of hybrid electric vehicle is a vehicle, which can not be driven solely on the electric motor, because its electric motor does not have enough power to propel the vehicle on its own. As compared to full hybrids, mild hybrids have smaller batteries and a smaller, weaker motor/generator, which allows automakers to reduce cost and weight. So mild hybrids achieve limited fuel consumption savings, up to 15% in urban driving and 8 to 10% overall cycle.
3. Power assist hybrids. This kind of hybrid electric vehicle (HEV) use internal combustion engine (ICE) for primary power, with a torque-boosting electric motor also connected to a largely conventional powertrain.
