OAT551 Automotive Systems Syllabus:

OAT551 Automotive Systems Syllabus – Anna University Regulation 2017

UNIT I Automotive Engine Auxiliary Systems

Automotive engines‐ External combustion engines –Internal combustion engines ‐ classification of engines‐ SI Engines‐ CI Engines‐ two stroke engines ‐four stroke engines construction and working principles ‐ IC engine components‐ functions and materials ‐valve timing –port timing diagram‐ Injection system ‐Unit injector system‐ Rotary distributor type ‐ Electronically controlled injection system for SI engines‐CI engines‐Ignition system ‐ Electronic ignition system ‐Transistorized ignition system, capacitive discharge ignition system.

UNIT II Vehicle Frames And Steering System

Vehicle construction and different Chassis layouts –classifications of chassis‐ types of frames‐ frameless chassis construction –articulated vehicles‐ vehicle body ‐ Vehicle aerodynamics‐ various resistances and its effects ‐ steering system –conventional – sophisticated vehicle‐ and types of steering gear box‐Power Steering‐ Steering geometry‐condition for true rolling motion‐Ackermann’s‐ Devi’s steering system ‐ types of stub axle – Types of rear axles.

UNIT III Transmission Systems

Clutch‐types and construction, gear boxes‐ manual and automatic, gear shift mechanisms, over drive, transfer box, fluid flywheel, torque converter, propeller shaft, slip joints, universal joints –‐ Hotchkiss Drive and Torque Tube Drive‐ rear axle‐ Differential‐wheels and tyres.

UNIT IV Suspension And Brakes Systems

Suspension Systems‐ conventional Suspension Systems ‐independent Suspension Systems –leaf spring – coil spring –taper‐lite ‐ eligo,s spring Types of brakes ‐Pneumatic and Hydraulic Braking Systems, Antilock Braking System (ABS), electronic brake force distribution (EBD) and Traction Control. Derive the equation of Forces acting while applying a brake on plain surface ‐ inclined road‐gradient.

UNIT V Alternative Energy Sources

Use of Natural Gas, Liquefied Petroleum Gas, Bio‐diesel, Bio‐ethanol, Gasohol and Hydrogen in Automobiles‐ Engine modifications required –Performance, Combustion and Emission Characteristics of SI and CI engines with these alternate fuels ‐ Electric and Hybrid Vehicles, Fuel Cell. Turbo chargers ‐Engine emission control by three-way catalytic converter system