active wheels/ hub motors ashwin thottumkara full ppt

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ACTIVE WHEELS

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In 2008, Michelin reinvented the wheel at the paris motor show.

The illustration was shown in two concept cars: Venturi Volage & WILL.

Venturi was made with all the four active wheels while WILL had just the two in the front active.

INTRODUCTION

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What is active wheel ?

Michelin’s Active Wheel is an intelligent wheel capable of propelling cars without gasoline.It has got two motors which sit inside the hub. one to propel the car. another for active suspension system.

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MICHELIN ACTIVE WHEEL

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ACTIVE SUSPENSION SYSTEM

Active suspension system controls vertical movement of the wheels by an on boardsystem.

This system has the capability to adjust itself continously to changing road conditions by artificially extending the design parameters.

It has an extremely fast response time 3/1000 ths of a second.

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INSIDE THE ACTIVE WHEEL

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COMPONENTS OF ACTIVE SUSPENSION SYSTEM

1. Sensors: various sensors installed around vehicle to monitor vehicle conditions.

2. Electronic control unit (ECU):In this microcomputer, calculations are made so as to make the necessary adjustments in the suspension.

3. Actuators: Instructions from the ECU are converted into electrical signals and directed to various actuators to control the suspension.

4. Adjustable shocks and springs.

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Typical arrangement of a Active suspension system

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ACTIVE WHEELS POWERED BY??1. FUEL CELLS:

2. LITHIUM ION: BATTERIES:

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ADVANTAGES OF USING ACTIVE WHEEL

Passenger safety increased.Frees up space that would normally house the

engine,differential,gearbox,transmission shaft.

Active wheel makes faster turns in poor conditions.

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CONCERNS REGARDING ACTIVE WHEEL

Active wheels are heavier than any wheels.

Routing of high voltage electric cables adjacent to wheels.

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CONCLUSION An EV can be redesigned from top to bottom

since all key components—the engine, electrical suspension systems, tyre and brakes—are now integrated in the wheel.

Simplifying vehicles creates new opportunities in vehicle design by freeing styling teams from constraints previously thought to be inevitable

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REFERENCES

“Active suspension system” by Scott Memmer.“Michelin unveils Active wheel in affordable electric car” by Christene Lepisto. “Getting through without gasoline- The Move to Hydrogen fuel cell”,Science & Technology review.

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VENTURI VOLAGE

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Thank you

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