The Hy-wire (Hydrogen drive-by-wire) is a concept
car from General Motors originally introduced in
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.
Two basic elements
largely dictate car
An internal combustion engine requires a
lot of additional equipment to function
No matter what else they do with a car,
designers always have to make room.
The same goes for mechanical and
But the basic function of a car remains the
same however they are built.
• Instead of an engine, it has a fuel cell stack,
which powers an electric motor connected to
1. the wheels.
• Instead of mechanical and hydraulic linkages,
2. it has a drive by wire system based on input
from an electronic controller.
• This is the same control system employed in
3. modern fighter jets as well as many
A computer actually operates the components
that move the wheels, activate the brakes and
so on, based on input from an electronic
Electromechanical actuators and human-
machine interfaces such as pedal and
steering feel emulators are used.
Very user friendly and comforting system
There is no steering wheel, there are no
pedals and there is no engine compartment.
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.
It’s the user
Can slide to either
side of the vehicle
positioned to the
left and right of
small LCD monitor
•Glide the grips up and down lightly
• Turn either grip, in the same way
To accelerate you would turn the throttle on a
•Squeeze either grip.
1. They also generate electricity by chemical
reactions like batteries.
2. Can be continuously recharged
3. Very efficient.
Anode side: Cathode side: Net reaction:
• 2H2 => 4H+ • O2 + 4H+ + • 2H2 + O2 =>
+ 4e- 4e- => 2H2O 2H2O
Made up of 200 individual cells connected in
Collectively provide 94 kilowatts of
continuous power and 129 kilowatts at peak
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
Power in remote areas such as parks
Home power generation
1 •FUEL EFFICIENT
2 •ENVIRONMENT FRIENDLY
3 •HIGH STABILITY
4 •HIGHLY SPACIOUS
5 •DRIVER FRIENDLY
•FREEDOM OF INDIVIDUAL EXPRESSION
STORAGE OF HYDROGEN FUEL
General Motors says it fully intends to release
a production version of the car in 2010,
assuming it can resolve the major fuel and
It is certainly a good illustration of various
ways cars might evolve in the near future.