SEMINAR ON HY-WIRE TECHNOLOGY

INTRODUCTION Cars are immensely complicated machines, but they do an incredibly simple job. 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 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 The two basic elements that largely dictate car design today are 1. The internal combustion engine 2. Mechanical and hydraulic linkages

HY-WIRE BASICS The defining characteristic of the Hy-wire is that it doesnt have either of those two things: engine and mechanical and hydraulic linkages The defining characteristic of the Hy-wire is that it doesnt have either of those two things: engine and mechanical and hydraulic linkages Instead of an engine, it has a fuel cell stack Instead of an engine, it has a fuel cell stack Instead of mechanical and hydraulic linkages, it has a drive by wire system Instead of mechanical and hydraulic linkages, it has a drive by wire system

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. 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 provides a DC (direct current) voltage It can continually recharge a fuel cell by adding chemical fuel- hydrogen for an onboard storage tank It can continually recharge a fuel cell by adding chemical fuel- hydrogen for an onboard storage tank

Proton exchange membrane fuel-cell The type of fuel cell that is used in the The type of fuel cell that is used in the Hy-wire car is the Proton exchange membrane fuel cell. Hy-wire car is the Proton exchange membrane fuel cell. The four basic elements of a PEM fuel cell are:- The four basic elements of a PEM fuel cell are:- The anode, the negative post of the fuel cell The anode, the negative post of the fuel cell The cathode, the positive post of the fuel cell The cathode, the positive post of the fuel cell

Electrolyte Electrolyte It is the proton exchange membrane. It is the proton exchange membrane. It blocks electrons. It blocks electrons. The catalyst The catalyst It is a special material that facilitates the reaction of oxygen and hydrogen. 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 usually made of platinum powder very thinly coated onto carbon paper or cloth. It is rough and porous. It is rough and porous. The platinum-coated side of the catalyst faces the PEM. The platinum-coated side of the catalyst faces the PEM.

The working of PEMFC

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

DRIVE BY WIRE TECHNOLOGY The brain of Hy-Wire is a central computer housed in the middle of the chassis. The brain of Hy-Wire is a central computer housed in the middle of the chassis. It sends electronic signals to It sends electronic signals to The motor control unit to vary the speed. The motor control unit to vary the speed. The steering mechanism to maneuver the car. The steering mechanism to maneuver the car. The braking system to slow the car down. The braking system to slow the car down. It is connected to an array of advanced sensors. It is connected to an array of advanced sensors. The computer is connected to the bodys electronics through universal docking ports. The computer is connected to the bodys electronics through universal docking ports.

X-Drive X-drive is the drivers control unit. X-drive is the drivers control unit. It has two ergonomic groups, positioned to the left and right of a small LCD monitor. 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. 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. A second monitor, on a console beside the driver, shows you stereo, climate control and navigation information.

THE X-DRIVE CAN SLIDE TO EITHER SIDE OF THE VEHICLE THE X-DRIVE CAN SLIDE TO EITHER SIDE OF THE VEHICLE

Fuel-Cell stack Fuel-Cell stack It is made up of 200 individual cells connected in series. 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 collectively provide 94 kilowatts of continuous power and 129 kilowatts at peak power. It is kept cool by a conventional radiator system It is kept cool by a conventional radiator system It delivers DC voltage ranging from 125 to 200 volts It delivers DC voltage ranging from 125 to 200 volts

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

ADVANTAGES 1. Fuel efficient - a fuel cell vehicle could provide twice the fuel efficiency of a comparably sized conventional vehicle 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. 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. 3. High stability - a low center of gravity, gives the architecture both a high stability and superior handling.

4. Highly spacious - As there are no linkages and engine lot of legroom space is available for the passengers. 4. Highly spacious - As there are no linkages and engine lot of legroom space is available for the passengers. 5. Driver friendly – 5. Driver friendly – X-Drive can be taken to anywhere inside the car X-Drive can be taken to anywhere inside the car Gives the driver a clear view of the road and thus increases the drivability. Gives the driver a clear view of the road and thus increases the drivability. 6. Freedom of individual expression – 6. Freedom of individual expression – freedom of individual expression freedom of individual expression

DISADVANTAGES 1. Low safety -An electrical failure would mean total loss of control. 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. 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. 3. Pricing - With the current status of development, manufacturing of the Hy-wire cars on a mass scale would not at all be economical.

FUTURE OF HY-WIRE FUTURE OF HY-WIRE Fuel cells offer a promising alternative Fuel cells offer a promising alternative They need to be compelling, affordable, and profitable. They need to be compelling, affordable, and profitable. The main challenge is in the field of storage of hydrogen The main challenge is in the field of storage of hydrogen

CONCLUSION The Hy-wire concept has so profoundly brought about changes in the automotive industry The Hy-wire concept has so profoundly brought about changes in the automotive industry GM and other auto makers are planning GM and other auto makers are planning to launch such a vehicle for the public usage by the year to launch such a vehicle for the public usage by the year 2020.

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