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HY-WIRECARSK UDAYKUMAR

3rd B TECH

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INTRODUCTION

The Hy-wire (Hydrogen drive-by-wire) is a concept

car from General Motors originally introduced in

January 2002.

The car runs on hydrogen fuel cells.

Uses a drive-by-wire system, meaning that the

car is controlled electronically.

No need of conventional engine.

All equipments needed are in a very compact place.

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WHY NEED HY-WIRE CAR

Two basic elementslargely dictate car

design today:

internalcombustion

engine

hydrauliclinkages

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MAKING MORE ROOM

An internal combustion engine requires a lot

of additional equipment to function correctly.

No matter what else they do with a car,

designers always have to make room.The same goes for mechanical and

hydraulic linkages.

But the basic function of a car remains thesame however they are built.

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POLLUTION CONCERNS

DEPLETING CONVENTIONALSOURCES

INCREASING POLLUTION

GLOBAL WARMING

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HY-WIRE BASICS

1. Instead of an engine, it has a fuel cell stack, which

powers an electric motor connected to the wheels.

2. Instead of mechanical and hydraulic linkages, it has

a drive by wire system based on input from anelectronic controller.

3. This is the same control system employed in

modern fighter jets as well as many commercialplanes.

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DRIVEBYWIRESYSTEM

A computer actually operates the components that

move the wheels, activate the brakes and so on,

based on input from an electronic controller.

Electromechanical actuators and human-machine

interfaces such as pedal and steering feel

emulators are used.

Very user friendly and comforting system

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There is no steering wheel, there are no

pedals and there is no engine compartment.

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CHASSIS

Every piece of equipment that actually

moves the car along the road is housed in

an 11-inch-thick (28 cm) aluminium chassis

at the base of the car.

Enough space inside.

Better drive view.

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CONTROLANDTRANSMISSION

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HY-WIRE CARS X-DRIVE

Its the user

machine interface.

Can slide to eitherside of the vehicle

Has two ergonomicgrips, positioned tothe left and right ofsmall LCD monitor.

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CONTROLOF X-DRIVE

Glide the grips up and downlightlyFor

steering

Turn either grip, in thesame way you would turnthe throttle on a motorcycle

Toaccelerate

Squeeze either grip.Forbraking

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1. They also generate electricity by chemical

reactions like batteries.

2. Can be continuously recharged3. Very efficient.

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CHEMISTRYOFAFUELCELL

Anode side:

2H2 => 4H++ 4e-

Cathode side:

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

Net reaction:

2H2 + O2 =>2H2O

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HOWA HYDROGEN FUEL CELL WORKS

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FUELSTACK

Made up of 200 individual cells connected in series.

Collectively provide 94 kilowatts of continuous

power and 129 kilowatts at peak power.

The motor controller boosts this up to 250 to 380volts and converts it to AC current to drive the

three-phase electric motor that rotates the wheels

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OTHERAPPLICATIONSOFFUELCELLS

Power in remote areas suchas parks

Military application

Home power generation

Submarines

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ADVANTAGES

1 FUEL EFFICIENT

2 ENVIRONMENT FRIENDLY

3 HIGH STABILITY

4 HIGHLY SPACIOUS

5 DRIVER FRIENDLY

6 FREEDOM OF INDIVIDUAL EXPRESSION

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SHORTCOMINGS

LOW SAFETY

STORAGE OF HYDROGENFUEL

PRICING

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FUTURE OF HY-WIRE CARS

General Motors says it fully intends to release a

production version of the car in 2010, assuming it

can resolve the major fuel and safety issues.

It is certainly a good illustration of various ways

cars might evolve in the near future.

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THANK YOU