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SEMINAR ON

HY-WIRE TECHNOLOGY

SARATH PRAKASH.V

MECHANICAL ENGINEERING

G.P.T.C KALAMASSERY

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INTRODUCTION

Cars are immensely complicatedmachines, but they do an incredibly simple

job.

Most of the complex stuff in a car isdecided to turning wheel

The two basic elements that largely dictate

car design today are

1. The internal combustion engine

2. Mechanical and hydraulic linkages

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HY-WIRE BASICS

The defining characteristic of the Hy-wireis that it doesnt have either of those two

things: engine and mechanical and

hydraulic linkagesInstead of an engine, it has a fuel cell

stack

Instead of mechanical and hydrauliclinkages, it has a drive by wire system

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FUEL CELL ON HY-WIRE

A fuel cell is an electrochemical energy

conversion device that converts hydrogenand oxygen into water, producing

electricity and heat in the process.

It provides a DC (direct current) voltage

It can continually recharge a fuel cell by

adding chemical fuel- hydrogen for an

onboard storage tank

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Proton exchange membrane

fuel-cell

The type of fuel cell that is used in the

Hy-wire car is the Proton exchange

membrane fuel cell.

The four basic elements of a PEM fuel cell

are:-

The anode, the negative post of the fuel cell

The cathode, the positive post of the fuel cell

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ElectrolyteIt is the proton exchange membrane .

It blocks electrons .

The catalystIt is a special material that facilitates the reaction of

oxygen and hydrogen.

It is usually made of platinum powder very thinly

coated onto carbon paper or cloth.

It is rough and porous .

The platinum-coated side of the catalyst faces the

PEM.

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The working of PEMFC

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Chemistry of a Fuel Cell

Anode side:

2H2 => 4H+ + 4e-

Cathode side:

O2 + 4H+ +4e- => 2H2O

Net reaction:

2H2 + O2 => 2H2O

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DRIVE BY WIRE TECHNOLOGY

The brain of Hy-Wire is a central computerhoused in the middle of the chassis.

It sends electronic signals to

The motor control unit to vary the speed.

The steering mechanism to maneuver the car.

The braking system to slow the car down .

It is connected to an array of advanced sensors.

The computer is connected to the bodyselectronics through universal docking ports.

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X-Drive

X-drive is the drivers control unit . It has two ergonomic groups , positioned to the

left and right of a small LCD monitor.

The color monitor in the center of the controller

displays speed, mileage, fuel level and the rear-view images from video cameras on the sidesand back of the car, in place of conventionalmirrors.

A second monitor, on a console beside thedriver, shows you stereo, climate control andnavigation information.

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12/21 THE X-DRIVE CAN SLIDE TO EITHER SIDE OF THE VEHICLE

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Fuel-Cell stack

It is made up of 200 individual cells connected inseries.

It collectively provide 94 kilowatts of continuous

power and 129 kilowatts at peak power.

It is kept cool by a conventional radiator system

It delivers DC voltage ranging from 125 to 200

volts

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THE HYDROGEN TANKS AND FUEL-CELL STACK IN THE HY-WIRE

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ADVANTAGES

1. Fuel efficient- a fuel cell vehicle couldprovide twice the fuel efficiency of a comparablysized conventional vehicle

2. Environment friendly -the only bi-productformed is water, which is a non-pollutant.

3. High stability -a low center of gravity, givesthe architecture both a high stability and superiorhandling .

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4. Highly spacious -As there are no

linkages and engine lot of legroom space

is available for the passengers.

5. Driver friendly X-Drive can be taken to anywhere inside the car

Gives the driver a clear view of the road and thus

increases the drivability.

6. Freedom of individual expression freedom of individual expression

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DISADVANTAGES

1. Low safety-An electrical failure would mean

total loss of control.

2. Storage and transportation of hydrogenfuels production , transportation and storage

of hydrogen for the on board fuel cell stack.

3. Pricing -With the current status of

development, manufacturing of the Hy-wire cars

on a mass scale would not at all be economical.

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FUTURE OF HY-WIRE

Fuel cells offer a promising alternative

They need to be compelling, affordable,and profitable.

The main challenge is in the field ofstorage of hydrogen

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CONCLUSION

The Hy-wire concept has so profoundly

brought about changes in the automotive

industry

GM and other auto makers are planning

to launch such a vehicle for the public

usage by the year 2020.

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THANK YOU