MECHANICAL SEMINAR TOPIC

1. SEMINAR ON
HY-WIRE TECHNOLOGY
SARATH PRAKASH.V
MECHANICAL ENGINEERING
G.P.T.C KALAMASSERY

2. INTRODUCTION
 Cars are immensely complicated
machines, but they do an incredibly simple
job.
 Most of the complex stuff in a car is
decided to turning wheel
 The two basic elements that largely dictate
car design today are
1. The internal combustion engine
2. Mechanical and hydraulic linkages

3. HY-WIRE BASICS
 The defining characteristic of the Hy-wire
is that it doesn’t have either of those two
things: engine and mechanical and
hydraulic linkages
 Instead of an engine, it has a fuel cell
stack
 Instead of mechanical and hydraulic
linkages, it has a drive by wire system

4. FUEL CELL –ON HY-WIRE
 A fuel cell is an electrochemical energy
conversion device that converts hydrogen
and 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

5. 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

6.  Electrolyte
 It is the proton exchange membrane .
 It blocks electrons .
 The catalyst
It 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.

7. The working of PEMFC

8.  Chemistry of a Fuel Cell
Anode side:
2H2 => 4H+ + 4e-
Cathode side:
O2 + 4H+ +4e- => 2H2O
Net reaction:
2H2 + O2 => 2H2O

9. DRIVE BY WIRE TECHNOLOGY
 The ‘brain’ of Hy-Wire is a central computer
housed 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 body’s
electronics through universal docking ports.

11. X-Drive
 X-drive is the driver’s 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 sides
and back of the car, in place of conventional
mirrors.
 A second monitor, on a console beside the
driver, shows you stereo, climate control and
navigation information.

12.  THE X-DRIVE CAN SLIDE TO EITHER SIDE OF THE VEHICLE

13. Fuel-Cell stack
 It is made up of 200 individual cells connected in
series.
 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

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

16. ADVANTAGES
 1. Fuel efficient - a fuel cell vehicle could
provide twice the fuel efficiency of a comparably
sized conventional vehicle
 2. Environment friendly - the only bi-product
formed is water, which is a non-pollutant.
 3. High stability - a low center of gravity, gives
the architecture both a high stability and superior
handling .

17.  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

18. DISADVANTAGES
 1. Low safety -An electrical failure would mean
total loss of control.
 2. Storage and transportation of hydrogen
fuels – 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.

19. 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 of
storage of hydrogen

20. 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.

21. THANK YOU