- published: 25 Mar 2015
- views: 226081
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.
Testing the BMW i3 Electric Car
5 Reasons To Buy An Electric Car
Driving the Chevy Bolt: An affordable electric car for everyone — CES 2016
Tested Test Drives the Tesla Model S Electric Car
Electric Car Technology || RISE Of Electric Car | Tesla Motors | Documentary english subtitles
10 Electric Car Facts - WMNews Ep. 16
DIY Electric Car: 04A DC Motor Basics, Part 1
2016 Mitsubishi iMiEV Test Drive Video Review – Cheap Electric Car
Tesla Model 3 vs Chevy Bolt | The Race for the Electric Car
JDM Electric Turd - Part 2