1. A Seminar on
Kinetic Energy
Recovery System
(KERS)
Supervised by:
MR. S.P. Jena
HOD, Mechanical Department
Prepared By:
Amarendra Acharya
Mechanical Engineering- 7th Semester
NIT, Bhubaneswar

2. CONTENTS
• KERS- INTRODUCTION
• BASIC ELEMENTS
• WORKING PRINCIPLE
• TYPES OF KERS
• ELECTRICAL KERS
• MECHANICAL KERS
• ADVANTAGES
• ONROAD APPLICATIONS
• CONCLUSION

3. What is KERS?
• The acronym KERS stands for Kinetic Energy
Recovery System.
• The device recovers the kinetic energy that is
present in the waste heat created by the car’s
braking process.
• It stores that energy and converts it into power
that can be called upon to boost acceleration.

4. BASIC ELEMENTS OF KERS
• First, a way to store and then return energy to
the power train and
• Second, a place to store this energy.
• Main three components are:
 Power Control Unit
 Motor/Generator Unit
 Batteries/Flywheel

5. WORKING PRINCIPLE
• Store the energy during braking and converts into
power, that can be used to boost acceleration.
• Operates through two cycles:
 Charge Cycle
 Boost Cycle

8. Types of KERS
A mechanical
KERS system
An electrical
KERS system

9. ELECTRICAL KERS
•POWER CONTROL
UNIT
•MOTOR / GENERATOR
UNIT

10. PCU (Power Control Unit)
• Invert and control
the switching of
current from the
batteries to the
MGU.
• Monitor the status
of the individual
cells with the
battery.

11. MGU (MOTOR/GENERATOR
UNIT)
• Consist of distinct
motor and generator
machines coupled
together.
• Creates the power for
the batteries when the
car is braking.
• Return the power from
the batteries to add
power directly to the
engine.

12. WORKING PRINCIPLE OF
ELECTRICAL KERS

13. MECHANICAL KERS
• Flywheel.
• Continuously variable
transmission (CVT).

14. FLYWHEEL
• Energy storage
device.
• Transfer the
energy to and
from the
driveline.

15. CONTINOUSLY VARIABLE
TRANSMISSION
• Cope with the
continuous change in
speed ratio between
the flywheel and road-wheels.
• Provide variable gear
ratio which enables
flywheel to store and
release energy.

17. ADVANTAGES
• High power capability.
• Light weight and small size.
• Completely safe.
• A truly green solution.
• High efficiency storage and recovery.
• Low cost in volume manufacture.
• Very high speeds can be achieved.

19. On road applications
• The Flybrid® 9013 hybrid system has been fitted
to the Jaguar XF demonstrator.

20. KERS IN F1
Kimi Räikkönen took the lead of the 2009
Belgian Grand Prix with a KERS-aided
overtake and subsequently won the race.

21. CONCLUSION
• It’s a technology for the present and the future because it’s
environment-friendly, reduces emissions, has a low
production cost, increases efficiency and is highly
customizable and modifiable. Adoption of a KERS may
permit regenerative braking and engine downsizing as a
means of improving efficiency and hence reducing fuel
consumption and CO2 emissions.
• The KERS have major areas of development in power
density, life, simplicity, effectiveness and first and foremost
the costs of the device. Applications are being considered
for small, mass-production passenger cars, as well as
luxury cars, buses and trucks.

22. REFERENCE
• Wikipedia
• autosport.com
• saeindia.org
• Cross, Douglas. "Optimization of Hybrid Kinetic
Energy Recovery Systems (KERS) for Different
Racing Circuits." SAE Digital Library. SAE
International.Web. 25 Sept. 2009.
• Sorniotti, Aldo, and Massimiliano Curto. "Racing
Simulation of a Formula 1 Vehicle with Kinetic
Energy Recovery System." SAE Digital Library. SAE
International.Web. 25 Sept. 2009.