- published: 14 Jul 2014
- views: 7737
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.
Modern HEVs make use of efficiency-improving technologies such as regenerative braking, which converts the vehicle's kinetic energy into electric energy to charge the battery, rather than wasting it as heat energy as conventional brakes do. Some varieties of HEVs use their internal combustion engine to generate electricity by spinning an electrical generator (this combination is known as a motor-generator), to either recharge their batteries or to directly power the electric drive motors. Many HEVs reduce idle emissions by shutting down the ICE at idle and restarting it when needed; this is known as a start-stop system. A hybrid-electric produces less emissions from its ICE than a comparably-sized gasoline car, since an HEV's gasoline engine is usually smaller than a comparably-sized pure gasoline-burning vehicle (natural gas and propane fuels produce lower emissions) and if not used to directly drive the car, can be geared to run at maximum efficiency, further improving fuel economy.
Plug-in Hybrid Electric Vehicles
Hybrid vs. Electric car: Today's technology takes on tomorrow's car
How Electric Vehicles Work - the technology underlying an EV
Kit Turns ANY Car Into a Plug in Hybrid Vehicle!
How Hybrid Electric Vehicles Work! (Animation)
Best Hybrid Car and Electric Cars For 2016 [ Buying Guide ]
Reviews For The World Best Top 5 Electric Cars "hybrid"
Inside the i8, BMW's First Hybrid Electric Car | Mashable
Tactical Considerations for Extinguishing Fires in Hybrid and Electric Vehicles
Consider This Before Buying a Hybrid or Electric Car
Kia Unveils 2017 Hybrid & Electric Vehicles | Chicago Auto Show
The Best Hybrid and Electric Cars for 2015
Volvo Electric Car ReCharge Concept hybrid In-Wheel Motor EV
Hybrid Car Electrical Problems