Editing Motor–generator (section)

==Motor/generator versus motor–generator==
In principle, any [[electrical generator]] can also serve as an electric motor, or vice versa. In [[hybrid vehicles]] and other lightweight power systems, a '''motor/generator''' is a single electric machine that can be used as an [[electric motor]] or a [[electrical generator|generator]], converting between electrical power and [[mechanical energy|mechanical power]].

From the 2014 season, Formula 1 racing cars will have two of what are described as 'Motor Generator Units' (MGUs), one each on the drive train and the turbocharger.<ref>{{cite web |title=2014 Formula One Engine Regulations |url=https://www.fia.com/sites/default/files/publication/file/FIA%20F1%20Power%20Unit%20leaflet.pdf |website=www.fia.com |publisher=Fédération Internationale de l'Automobile |access-date=10 March 2020 |page=5}}</ref>  These are motor/generators rather than motor–generators, single units which can act as ''either'' a motor or a generator. They make the cars more fuel-efficient by harvesting energy from [[regenerative braking]] and from the turbocharger, and can also be used to provide up to 160 BHP extra to the wheels to aid acceleration and overtaking, or to spin up the turbo to increase boost pressure faster, thereby reducing [[turbo lag]].