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Regenerative and friction braking must both be used, creating the need to control them to produce the required total braking. The GM EV-1 was the first commercial car to do this. In 1997 and 1998, engineers Abraham Farag and Loren Majersik were issued two patents for this brake-by-wire technology.
Conventional brakes dissipate kinetic energy as heat, which is irrecoverable. Regenerative braking, used by hybrid/electric vehicles, recovers about 50% of the car's energy in each braking event, leading to perhaps 20% reduction in energy costs of city driving. [11]
Electric brake is an ambiguous term meaning more than one thing: Dynamic braking, Braking using magnetic currents either to charge a battery or waste as heat; Electric friction brake, Electrically controlled friction brake; Track brake; Regenerative brake; Eddy current brake, Braking using eddy currents
Electromagnetic brakes or EM brakes are used to slow or stop vehicles using electromagnetic force to apply mechanical resistance (friction). They were originally called electro-mechanical brakes but over the years the name changed to "electromagnetic brakes", referring to their actuation method which is generally unrelated to modern electro-mechanical brakes.
A small electric car like the Mini Cooper E has a 36.6 kWh battery, while a mid-size car like the Polestar 2 has battery size options of 69 kWH and 82 kWh, and a larger EV like the Porsche Macan ...
A drum brake is a vehicle brake in which the friction is caused by a set of brake shoes that press against the inner surface of a rotating drum. The drum is connected to the rotating roadwheel hub. Drum brakes generally can be found on older car and truck models.
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