A presentation on autotronics:

improving vehicle performance

UNDER THE GUIDENCE OF PROF.Q.REHMAN

SUBMITTED BY AMAR

3GN11ME011

contentsIntroduction.

History.

Meaning and systems involved.

Adaptive cruise control.

Airbags.

Comparison.

Advantages and dis-advantages.

Conclusion.

Reference.

INTRODUCTION

Autotronics is the blend of Automobile +Electronics.

Analysts estimate that more than 80 percent of all

automotive innovation now stems from electronics.

Anti-lock brakes, airbag deployment, engine Control,

GPS navigation,the CAN etc are implemented.

Electronic systems are embedded mixed-signal

systems because they feature multiple analog sensors

and analog motor controls under digital control.

History The first electronic part in an automobile was called

an ‘Engine Control Unit’ as it is named later as

‘Electronic Control Unit’.

1970’s: Introduction of electronics for engine

controls.

1980’s: Anti-lock braking introduced.

Early 1990’s: Airbags become standard.

Late 1990’s: Rapid expansion of body electronics –

seat motors (body Computers) auto locking systems

and keyless entry.

Early 2000’s to date: sophisticated audio and video,

Signals sent via satellite; GPS and mapping.

Late 2000’s: wireless connectivity.

Meaning and systems involved. It is the Implementation of electronics in the field of

automobile to improve the performance of the vehicle.

The main functional areas of automobile industries

are strongly influenced by the field of electronics and

these systems are involved to achieve high

performance-

1)Braking system

2)Steering system

3)Suspension system

4)Transmission system

5)Engine system

Braking system Electronic Braking

System(EBS) increases traffic

safety through reduced stopping

distance and improved brake

stability.

EBS sends all inputs electronica

-lly to all braking components in

shorter response times provide a

more comfortable and finely

tuned braking feeling.

Central brake unit (CBU)

Steering system Electronic power steering consists of 2 sensors located on input shaft they are ‘torque sensor’ and ‘rotat -tion sensor’ which converts torque and rotation speed with its direction into voltag -e signals respectively. An “interface” circuit whic -h converts these voltage signals into other form of signals the electronics can process for the smooth and safety steering operation.

Electronic Power Steering

Wheel speed sensor

An overview on Electronic Power Steering

Suspension systemIt’s consists of springs and shock absorbers to

isolate chassis and occupants from sudden vertical changes.

This involves Active Roll Control(ARC) system which uses hydraulic/pneumatic and electronic technology to eliminate the vehicle roll angle in cornering,which improves handling and reduces rollover risks.

ARC systems are more often we seen in Sport Utility Vehicles (SUVs).

ARC system contains a control module, accelerometer, speed sensor,electrohydraulic pump etc to improve the performance of the vehicle.

Active roll control system operation while cornering

Transmission system This system mainly controls the shifting

process of the gears. Many semi-automatic transmissions which

have a fully automatic or semi-automatic clutch uses electronics for its operation and control.

5 and 7 series vehicles of BMW products are installed these systems in 1986.

Increased fuel economy,increased driving safety,

improved shift comfort and modifying line pressures are the benefits achieved by installing this system.

Engine system• Electronic Fuel Injection(EFI) uses a completely different technology to supply power to the engine.• Instead of a floater EFI system electronically meters the fuel so that the exact amount of fuel needed is supplied to the engine.• EFI is more efficient and emission friendly.• compatible and more reliable than the tradional carburetor.

Electronic Fuel Injector

ADAPTIVE CRUISE CONTROL Adaptive Cruise Control (ACC) technology

automatically adjusts the vehicle speed and distance to that of a target vehicle.

ACC uses a long range radar sensor to detect a target vehicle up to 200 mts.

Automatically decelerates or accelerates the vehicle

airbags Technically known as a Supplementary Restraint System

(SRS), Air Cushion Restraint System (ACRS) created in 1952.This is a small electronic chip that moves as a result of fast

deceleration and, as a result, signals the rapid ejection of the airbags.

AIRBAG OPERATION

comparisonParameter Without Using Electronics Electronics

1)Efficiency Less High2)Braking More Less

Less efficient More efficientsystem systemLess economy High economy

3)Steering Less stability High stabilityon turns on turns

4)Security Less secured More secured

ADVANTAGESImproves the vehicle performance.Efficient and highly reliable.Increased safety and comfortable

environment.Implementing electronics will create a

healthy atmosphere by reducing air and noise pollution.

Smarter way of achieving high performance.

Dis-advantages

High cost to implement.Extra care should be taked to maintain.Lifespan of the electronic equipments are

less compared to mechanical equipments.

conclusion A modern car may have up to 100

electronic control units and a commercial vehicle up to 40. With brilliant minds working in the auto industry, there are limitless possibilities to what the manufacturers will include in their products in the coming years.

“Improving performance is a standard not an option”

referencewww.wikipedia.comwww.altera.com Applying Model-Based Design to Commercial

Vehicle Electronics Systems”; Tom Egel, Michael Burke,Michael Carone, Wensi Jin

The Math Works, Inc.; 2008.www.sciencedirect.com

Any queries?

Thanks to one and all….