1. -BY ASHISH PANDEY (TE MECHANICAL)
Hy-wire cars
-BY
ASHISH PANDEY
(TE MECHANICAL)

2. 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.

3. Two basic elements largely dictate car design today:
Why Need HY-WIRE CAR
Two basic elements largely dictate car design today:
internal combustion engine
hydraulic linkages

4. 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 the same however they are built.

5. DEPLETING CONVENTIONAL SOURCES
POLLUTION CONCERNS
DEPLETING CONVENTIONAL SOURCES
INCREASING POLLUTION
GLOBAL WARMING

6. 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 an electronic controller. 3.
This is the same control system employed in modern fighter jets as well as many commercial planes.

7. Drive by wire system
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

8. BASIC STRUCTURE
There is no steering wheel, there are no pedals and there is no engine compartment.

9. 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.

10. Control and transmission

11. HY-wire Car’s X-drive It’s the user machine interface.
Can slide to either side of the vehicle
Has two ergonomic grips, positioned to the left and right of small LCD monitor .

12. Control of X-drive For steering Glide the grips up and down lightly
To accelerate
Turn either grip, in the same way you would turn the throttle on a motorcycle
For braking
Squeeze either grip.

13. POWER – HYDROGEN FUEL CELLS
They also generate electricity by chemical reactions like batteries.
Can be continuously recharged
Very efficient.

14. Chemistry of a fuel cell
Anode side:
2H2 => 4H+ + 4e-
Cathode side:
O2 + 4H+ + 4e- => 2H2O
Net reaction:
2H2 + O2 => 2H2O

15. How a Hydrogen Fuel Cell Works

16. Fuel stack 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 380 volts and converts it to AC current to drive the three-phase electric motor that rotates the wheels

17. Other applications of fuel cells
Power in remote areas such as parks
Military application
Home power generation
Submarines

18. Hydrogen fuel cells are very efficient compared to what we have now

19. Advantages FUEL EFFICIENT ENVIRONMENT FRIENDLY HIGH STABILITY1
FUEL EFFICIENT 2
ENVIRONMENT FRIENDLY 3
HIGH STABILITY 4
HIGHLY SPACIOUS 5
DRIVER FRIENDLY 6
FREEDOM OF INDIVIDUAL EXPRESSION

20. SHORTCOMINGS
LOW SAFETY
STORAGE OF HYDROGEN FUEL
PRICING

21. 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.

22. THANK YOU