Autotronics

use of electronics in automobile

1. AUTOTRONICS:IMPROVING VEHICLE PERFORMANCE PALKAR OMKAR SANTOSH TE MECHANICAL ROLL NO 10ME032 Guided By Prof. R.R.Mane

2. AUTRONICS IN A VIEW

3. INTRODUCTION AUTOTRONICS= AUTOMOBILE + ELECTRONICS first electronic part in an automobile was called an ECU ( Engine control unit) Analysts estimate that more than 80 percent of all automotive innovation now stems from electronics

4. HISTORY : TIMELINE: 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), instrument panel lighting, auto locking systems and keyless entry Early 2000’s to date: infotainment, including sophisticated audio and video ; Signals sent via satellite (such as the OnStar System); GPS and mapping Capabilities ; satellite radio Late 2000’s: Steer-by-wire, wireless connectivity

5. This seminar describes automobile applications of autotronics in following domains: Braking system Steering system Suspension system Transmission system Engine (fuel intake)

6. Braking system EBS increases traffic safety through reduced stopping distance and improved brake stability. Functions In ECB: Anti-lock braking system (ABS): Traction control system (TCS) Brake lining wear control

7. ABS: ABS is an acronym for anti-lock braking system. First developed and patented in 1936, ABS is actually derived from the German term "anti blockier system." Anti-lock brakes are designed to prevent skidding and help drivers maintain steering control during an emergency stopping situation D ifference between ABS & Traction Control ABS manage the grip of the tires for braking maneuver Traction Control manage the grip of the tires for accelerating maneuver

8. STEERING SYSTEM The self-alignment estimation control uses both the EPS sensor information and internally programmed EPS control Speed sensitive steering system : Speed sensitive steering system is used to control the power steering pump pressure in relation to vehicle speed. Below 10mph (16km/h) t he computer operates the steering This action reduces the steering effort during low speed maneuver and parking.

9. Electrically powered steering uses an electric motor to drive either the power steering hydraulic pump or the steering   directly. steering sensor" is located on the input shaft where it enters the gearbox housing. An interface circuit that same housing converts the signals from the torque sensor and rotation sensor into signals. The vehicle motion estimation control uses the steering angular velocity information internally programmed in the EPS system. This control helps improve yaw damping of the vehicle at higher speeds on the road. Sensors Accelerating sensor ,displacement sensors ,   Steering wheel position

10. SUSPENSION SYSTEM suspension systems in most vehicles on the road today are passive. Shock absorbers help to dissipate the energy applied to the springs and damp the oscillations . Active Roll Control Systems : Vehicles lean when cornering due to the weight transfer imposed by lateral acceleration. Factors contributing to the roll angle of the vehicle include vehicle height and suspension stiffness. ARC system uses hydraulic and electronic technology to the vehicle roll angle in cornering, which improves handling.

11. The active roll control system contains Control module, Accelerometer , Speed sensor, Fluid reservoir, Electrohydraulic pump, Pressure control valve, Directional control valve, A hydraulic actuator in both the front and rear stabilizer bars .

12. TRANSMISSION SYSTEM Mainly it controls the shifting process of the gears. Electronically controlled transmissions were introduced on BMW products in 1986 on 5 and7 series vehicles . The TCM also adapts to changing conditions within the transmission by monitoring slip ratios . The TCM controls the operation of the Lock-Up Torque Converter which further increases economy ADVANTAGES: Increased fuel economy Improved shift comfort Increased driving safety

13. Electronic Fuel Injection EFI system electronically meters the fuel so that the exact amount needed is provided to the engine. EFI uses to fuel to power the engine by pumping it forcibly by using high pressure through a small nozzle or valve. A high-pressure fuel pump that produces high fuel pressures (5 to 12 MPa)

14. ADAPTIVE CRUISE CONTROL It 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 meters in front of vehicle. As per standard cruise control the driver can override the system at any time. Another advantage of this system is that the driver will not exceed the speed limit on the highway.

15. Airbags T he air bag technology is based on electronic sensors that measure the amount of quick deceleration through an accelerometer The new calculations will take into account the position of the seats, the use of a seat belt and the weight of the occupants.

16. Latest research Active bumper system, active hood lift system, vehicle to vehicle communication Camber thrust in F 1 vehicles Global Positioning System Rain sensing wipers Adaptive light system

17. CONCLUSION we briefly presented current and future vehicular electronics system an approach that uses modern technique to solve most of the local vehicular problems. the automobile industry and will likely continue as people always want and expect more from their cars.

18. THANK YOU !!