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
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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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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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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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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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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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.
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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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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