pratik seminar final 2003
TRANSCRIPT
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Electro-Mechanical BrakeSubmitted by
PATEL PRATIK NAVINCHANDRA
2KL05ME046
Under The Guidance Of Prof. S.I.SANGOLLI
SEMINAR ON
DEPARTMENT OF MECHANICAL ENGINEERINGK.L.E.SOCIETYS COLLEGE OF ENGINEERING AND
TECHNOLOGY
UDYAMBAG, BELGAUM-5900082008-2009.
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CONTENTS
INTRODUCTION
HYDRAULIC DESIGN CONSIDERATIONS
BASE NON-ISOLATED HYDRAULIC CIRCUIT DESIGN
FAILURE MODE CONSIDERATIONS- NON- ISOLATED
CIRCUIT
ISOLATED HYDRAULIC CIRCUIT DESIGN
2-WHEEL VS. 4-WHEEL FAILSAFE MODE
APPLICATIONS
CONCLUSION
REFERENCES
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INTRODUCTION
What is EMB system? Also called as Hydraulic Brake by Wire system.
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HYDRAULIC DESIGN CONSIDERATIONS
Input pedal force vs. Brake line pressure output intypical vacuum boosted vehicle.
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Comparison of conventional vacuum boostedsystem and EHB system
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BASE NON-ISOLATED HYDRAULIC CIRCUIT
DESIGN
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FAILURE MODE CONSIDERATIONS- NON-
ISOLATED CIRCUIT
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Fig. 9: Isolation Piston Comparison
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Fig. 10: Simplified Isolation Piston Seal Detection
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2-WHEEL VS. 4-WHEEL FAILSAFE
MODE
Fig. 11: Light Duty Truck Front Vs Rear BrakeComparison
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Fig. 13: Typical Midsize Vehicle Performance
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APPLICATIONS
Mercedes-Benz and Toyota already use almost fully
brake-by-wire systems. Mercedes-Benz E-class and SL models and on Toyota's
Estima.
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CONCLUSION
Here this brake system increases electrical and
mechanical complexity, failsafe braking
performance, accumulator safety, and 2-wheel
versus 4-wheel backup modes. This design also allows system flexibility,
inherent accumulator precharge isolation, and the
ability to tune for optimum failed system
stopping performance for all vehicle classes.
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REFERENCES
1. R. Schwarz, R. Isermann, J. Bhm, J. Nell, and P. Rieth, Modeling
and
control of an electromechanical brake, SAE Paper 980600, 1998.
2. R. Schwarz, R. Isermann, J. Bhm, J. Nell, and P. Rieth, Clamping
force estimation for a brake-by wire actuator, SAE Paper 1999-01-0482, 1999.
3. J. Scobie, M. Maiolani, and M. Jordan, A cost efficient fault tolerant
brake by wire architecture, SAE Paper 2000-01-1054, 2000.
4. Automotive Engineering, by Kripal Singh.
5. http://www.mando.com/eng/technique_safetyehb.htm
6. http://www.wikipedia.com
7. http://www.google.com
http://www.mando.com/eng/technique_safetyehb.htmhttp://www.wikipedia.com/http://www.google.com/http://www.google.com/http://www.wikipedia.com/http://www.mando.com/eng/technique_safetyehb.htm -
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THANK YOU