Conventional braking system

Regenerative braking system

How does it works

Types of regenerative braking system

Regenerative braking efficiency

Limitations

Models having RBS

Conclusion

Friction is used for braking.

Excessive heat energy is created

during braking.

This heat energy dissipates into the

air wasting as much as the vehicle

80% of the vehicle generated power

Conventional Braking reduced

fuel efficiency.

Regenerative braking means recapturing the

kinetic energy of the vehicle motion and

turning into another energy during braking.

Commonly, kinetic energy is converted into

electric energy

This energy is stored in storage battery and

used later to power the vehicle in hybrid or

fully electric vehicles.

By applying brakes, the electric motors

coupled with drive wheels, rotated in reverse

mode slowing down the car’s wheels.

A properly designed motor becomes an

electric generator, converting into electrical

energy.

This energy is feeding back into storage

battery and used to accelerate the vehicle.

Flywheel energy storage

Compressed gas energy storage

Capacitor energy storage

The energy efficiency of a conventional

car is about 20 percent. About 80% is lost

in heat energy.

Regenerative systems can capture and

return around half of the energy lost in

braking.

Reducing fuel use about 25 to 45 percent.

REGENERATIVE BRAKING EFFICIENCY

CARS HAVING

REGENERATIVE

BRAKING SYSTEM

CHEVROLET VOLT

BMW’S 5 SERIES

TESLA ROADSTER

HONDA FIT EV

NISSAN LEAF

Regenerative braking only works on “drive wheels.”

Regenerative brakes typically don’t provide enough braking force under panic stop conditions.

The friction brake is a necessary back-up in the event of failure of the regenerative brake

The efficiency of a regenerative system is limited by factors like the capacity of the energy storage system and the output of the electric motor

Regeneration braking can minimize the wear

of the brake pads, and reduce the

maintenance cost significantly.

It gives a good future to fully electric and

hybrid vehicle.

Regenerative brake is a small but important

step toward our eventual independence from

fossil fuel.

http://alternativefuels.about.com/od/glossary/g/regenbr

aking.htm

http://auto.howstuffworks.com/auto-parts/brakes/brake-

types/regenerative-braking.htm

www.driveforinnovation.com

www.gizmag.com

www.carsdirect.com

http://en.wikipedia.org/wiki/Regenerative_brake

www.wisegeek.com

PRESENTED BY:

AKASH KUMAR BHANDARI

11MEB325

GC1416