The document outlines the magic body control suspension system, an advanced electronically controlled system developed by Mercedes-Benz. It explains its components, functionality, driving modes, and compares its performance to conventional systems, emphasizing its merits and demerits. Key features include real-time monitoring of road conditions via a stereo camera and independent control of shock absorbers to enhance ride comfort and stability.

1. MAGIC BODY CONTROL
Seminar Guide, Presented by,
Mr. Jithu J Sooraj k
Asst. Professor Roll no:64
Mechanical Dept.

2. SCHEME OF PRESENTATION
 Introduction
 Classification
 Magic body control
 Components
 Working
 Driving modes
 Comparison
 Vehicle performance
 Equipped vehicles
 Merits and demerits
 References 2

3. INTRODUCTION
 What is suspension system?
 System which isolating automobile from road
shocks
 Consist of springs, dampers, Tires
 Objective of suspension system
 To prevent the road shocks transmitted
 To safeguard occupants and passengers from
road shock
 To preserve stability 3

4. CLASSIFICATION
SUSPENSION
SYSTEM
PASSIVE
ADAPTIVE
ACTIVE
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5. WHY MAGIC BODY CONTROL?
 With the world’s first suspension system with
“eyes”.
 Like riding on a flying carpet.
 Satisfying all requirements.
 A magical combination.
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6. 6
o Magic body control suspension system is an
electronically controlled active suspension system
o A stereo camera on the wind screen continually monitor the
road surface.
oTogether with the information on the driving conditions, the
control unit continually calculates the best control strategy for
dealing with unevenness in the road
o Created by Mercedes-Benz
o Project Manager is Stefan Cytrynski.

7. COMPONENTS
 Electronic control unit(ECU)
 Stereo camera
 Reservoir
 Sensors
 Hydraulic servo mechanism
 Coil springs and Shock absorbers
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8. 8

9. STEREO CAMERA
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 Located on wind
screen
 Continually
monitor the road
surface ahead 15
meters

10. ELECTRONIC CONTROL UNIT (ECU)
 Calculates the current driving status
 Independent controlling of shock absorbers
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RESERVOIR
 Used to store oil
 Supplies the oil to the servomechanism as per
the command of ECU

11. SENSORS
 The sensors continually monitor body movement
and vehicle level and supply the controller with new
data every ten milliseconds
 Four level sensors, one at each wheel measure the
ride level of the vehicle
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12. 12
 Three acceleration sensors called longitudinal,
lateral, vertical acceleration sensors
 The Longitudinal Acceleration Sensor reports
acceleration and deceleration.
 The Lateral Acceleration Sensor detects
transverse or side-to-side movements.
 Three Vertical Acceleration Sensors detect lifting
motion and pitch and roll of the body.

13. HYDRAULIC SERVO MECHANISM
 It is a mechanism that uses automatic feedback
and hydraulics to correct the performance of a
machine
 ECU directs the hydraulic servomechanisms on
how to correct the car's positioning.
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14. COIL SPRINGS AND SHOCK ABSORBERS
 Coil spring is the most common type of
spring found on modern vehicles
 Low cost and compact size
 Shock absorber keeps the suspension from
continuing to bounce after spring
compression and extension
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15. 15

16. WORKING
 The stereo camera scan the road surface and
provide corresponding signals to the ECU.
 ECU determines the amount of pressure to be built
in servo mechanism according to various signals
from sensors
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17. 17
 The sensors and hydraulic servo mechanism generates
forces to counteract the effects of the road surface.
 By these combination the suspension take action before
the wheels reach them.

18. DRIVING MODES
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 Comfort
 sport

19. COMFORT MODE
 Sensitive response and soft damping characteristics
 The suspension level is automatically adjusted
depending on the road speed.
 Vehicle is lowered by ten millimeters at speeds over
120 km/h
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20. SPORT MODE
 Shock absorbers have more stiffer response than
comfort mode
 Vehicle is lowered by10 millimeters at speeds below
120km/h
 Besides these driving modes driver is able to select a
suspension setting raised by 30 millimeters.
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21. COMPARISON
21 Reduced pitching

22. 22
 Reduced rolling tendency

23. VEHICLE PERFORMANCE
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24. EQUIPPED VEHICLES
 Mercedes-Benz S class
 Rolls Royce Ghost
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MERITS
 Stability at all time
 High level of ride comfort
 Minimizing uncomfortable body movements
 Successful elimination of roll and pitch
DEMERITS
High initial cost
Malfunctioning can lead to a big collapse
Require super quick micro-computers

26. REFERENCES
 “Automobile engineering” by Dr. Kripal Singh
 “Fast track” magazine
 A journal on modern suspension systems by Ishan
Raghava
 www.mercedes-benz.com
 www.automobilemag.com
 https://media.daimler.com/dcmedia
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