SIDDAGANGA INSTITUTE OF TECHNOLOGYTUMKUR.

A Seminar on : Hy-Wire, The concept Car.

Presented by: MANJUNATH. B 1SI04ME412

HY-WIREHY-WIRE

we'll look at one we'll look at one interesting vision of the interesting vision of the future, General Motor's future, General Motor's remarkable concept car, remarkable concept car,

overview

1. Problem Definition

2. Introduction

3. History

4. Architecture

5. Working Principle

6. Specification

7. Safety Assessments

8. Advantages

9. Conclusion

Problem Definition

Depletion of conventional fuels

Environmental Pollution

Risk of Accidents

Require More Maintenance

Inflexibility

Drawbacks of Present Automobile Car

Introduction

In order to avoid the use of petroleum products and to feel the touch of Technology, Imagine a car without an internal combustion engine ,steering wheel, brake & accelerator pedals.

Here is a one called HY-WIRE, whose development is in progress, and is done by GENERAL MOTORS.

Introduction

Hy-Wire cars are developed by combining Hydrogen fuel cell with Drive By Wire Technology.

Basically The Drive by Wire concept was derived by the concept Fly by Wire which is employed in fighter jets and in all Aero planes such as Airbus family and Boeing's 777.

General Motors has revealed a first look at Hy-wire cars on Feb 2002.

Hy-wire cars are Exhibited in North American International Auto Show in Detroit and the Geneva Motor Show. And also to the public at the Paris Motor Show.

History

Every piece of equipment that actually moves the car along the road is housed in an 28 cm thick aluminum chassis known as the skateboard.

Architecture

A. Rare Crush Zone

B. Universal Docking Connection

C. Control System

D. Body Attachments

E. Heat Dissipation

F. Fuel Cell System

G. Wheel Motors

H. Front Crush Zone

Basic parts

Working principle

Power Source Drive by Wire

Control Steer by Wire Brake by Wire

PowerFuel Cell

A fuel cell is an electrochemical energy conversion device which converts the chemicals hydrogen and oxygen into water, and in the process it produces electricity. This Produced electricity is utilized as power to the Hy-wire cars.

How hydrogen fuel cell works ?!Chemistry of a Fuel Cell

Anode side:2H2 => 4H+ + 4e- Cathode side:

O2 + 4H+ + 4e- => 2H2O Net reaction:

2H2 + O2 => 2H2O

Animation of hydrogen fuel cell working.

Fuel cell stack capability

One fuel cell only puts out a little bit of power. The fuel-cell stack in the Hy-wire is made up of 200 individual cells connected in series, which collectively provide 94 kilowatts of continuous power and 129 kilowatts at peak power. The compact cell stack is kept cool by a conventional radiator system that's powered by the fuel cells themselves.

Drive by wire control

The computer connects to the body's electronics through a single universal docking port. It transmits a constant stream of electronic command signals from the car controller to the central computer, as well as feedback signals from the computer to the controller.

Steer by Wire

The driver's control unit, X-drive is a lot closer to a video game controller than a conventional steering wheel. The controller has two grips, positioned to the left and right of a small LCD monitor. To steer the car, you glide the grips up and down lightly.

Accelerate by Wire

In order to accelerate, the driver as to just throttle the grips, as we do in our bikes ,thus one of our leg will be free while driving. when grips are throttled motion sensors will send the signals to main computer in the skateboard which rises the RPM of motor coupled to wheels.

Brake by wire

When driver squeeze either grip, it is interpreted by the control system and translated into requests for braking force on each wheel by hydraulic pressure and also to reduce the speed of drive motor .This system provides for integration of ABS. However there is no clutch, even the other leg is also free.

Specification

Top speed: 161 kmphWeight: 1,898 kgChassis length: 4.3 metersChassis width: 1.67 metersChassis thickness: 28 cmWheels: eight-spoke, light alloy wheels.Tires: 51-cm in front and 56-cm in back Fuel-cell power: 94 kilowatts continuous, 129 kilowatts peakFuel-cell-stack voltage: 125 to 200 voltsMotor: 250- to 380-volt three-phase asynchronous electric motor

Safety Assessments

The Injuries Caused by the mechanical Steering Wheels are eliminated.

Sophisticated side and front safety air bags are used.

A second monitor gives information about climate control and navigation information which assist the driver for safety driving.

Vehicles are equipped with front and rare“crush energy” absorbing zone.

Advantages

Flexibility in interior design and control placement

Enhanced braking as the vehicle can monitor and modulate brake pressure at each wheel.

Replacing the steering wheel and column with a joystick, may help to reduce injuries.

Designs which allow better reaction times for drivers.

The radically new architecture with the front and rear panels are made of transparent glass helps in clear view of road .

Hurdles for Hy-Wire Cars

An electrical failure May Lead to total loss of control. In order to Compensate it drive-by-wire cars will need back-up power supplies and redundant electronic linkages.

Energy-efficient methods for producing, transporting and storing hydrogen for the onboard fuel-cell stacks.

Storing of Hydrogen in strong Metal Container will leads to the increase in weight of the car.

Conclusion

Implementing this Cars, environmental pollution can be reduced..

It can replace the conventional energy resources.

By Adopting this concept in all future Cars we can reduce accidents to considerable extent.

Greater comfort ability can be achieved.

Thank you

we shall expect it earlier as possible…..…..

General Motors says it fully intends to release a production version of the car in

2010