(A.M.I.M.I) Part B-Six Papers

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1 (A.M.I.M.I) Part B-Six Papers AMB PAPERS 1 AUTO-I (I.C. Engines) 2 AUTO-II ( Chasis, frame, suspension, brakes, steering, mechanism & transmission) 3 AUTO-III (Auto Electrical System Fault Tracing) 4 APPLIED MECHANICS AND WORKSHOP TECHNOLOGY (Statics, Dynamics & Hydraulics & Workshop Technology) 5 MACHINE DRAWING 6 WORKSHOP PRACTICE (Maintenance and repair) AMB-I- AUTO-I (I.C. Engines power Plant) Introduction: The general layout of a motor vehicle, the position and functions of main components and assemblies, the inter relationship of various parts. Engine Unit: The Internal Combustion Engines- Working Principles. Four stroke and Two stroke cycles of operation, single and multi cylinder engines and typical arrangements phenomena of Combustion Chanbers, Location of Valves and Spark Plugs. Efficiency, Power Output and Rating, Engine Components. Cylinder construction and arrangements - Cylinders, Pistons, Piston Rings and Clearances Connecting Rod Big and Little End bearing Valves- Operating mechanisms, dispositions Cam and cam shafts, Tappets, design of these crank shaft arrangements firing orders, fly wheel, crank case induction and exhaust manifolds Silencers, Exhaust systems, power generated and horse power of the engine and mixture strength. Effects of Compression ratio Ignition timing on performance and efficiency Testing of Engine for Brake Horse power, Torque and efficiency. Fuel supply and carburetors: Methods of fuel supply, gravity, autovac, mechanical and electrical pumps, fuel, gauges, effect of mixture, strength of mixture in power output, principles of carburetion, requirements of a good carburetor, study of carburetors fitted in various cars, Zenith, S.U., Solex, Carter etc. essential components, function of jets and choke tube, starting slow running and acceleration, air cleaner, condition affecting carburetor performance. Principles of compression ignition engines: Process of combustion Cycles of operation, Fuel injection pump and nozzle units: Governors, advantages and disadvantages, mechanics, pneumatic and hydraulic governors, supercharging and super chargers. Lubrication: General Principles, Oil guage, Pressure Wet and Dry Sump system, splash and forced lubrication system, oil pumps and filters, carbon deposits, crank case dilution, selection of lubrication oil. Bearing clearances and oil viscosity of liquids index and its variation. Cooling System: Air and water cooling systems. Thermosym phonic and pump circulation, Radiators, water pumps, fans, thermostats, pressure cooling.

2 Fuels: Composition, additives, calorific values, octane rating. Thermal Efficiency and Fuel combustion, Process of combustion, analysis of exhaust as a guide to good combustion. Air Pollution: Introduction Pollution from Petrol Engine Effect of mode of operation on engine operations Effect of engine maintenance on exhaust emission. Gasoline engine emission control Diesel emission Diesel smoke and control Compare of diesel and petrol emission Air pollution from gas turbines Emission from alternative power plant. Distributor system injection system Petrol injection Electronic fuel injection Advantage and disadvantages of Petrol injection. AMB-2- AUTO-II (Chasis, frame, suspension, brakes, steering mechanism &transmission) Introduction: The general layout of motor vehicles the position and function of the main components and main assemblies. The interrelationship of various parts. Frame & Suspension: Rolling, Air and Gradient Resistances, Propulsive force required. Power and Torque, Characteristic of power plant required for road performance, frames, function, cross members, layout of main components, frameless construction, chasis lubrication. Road springs, different types and their action and attachment to frame and axels, cantilever, semi elliptical, shackles. Independent suspension, different types of suspension dampers. Front Axle & Steering: Stub axles and king pin assemblies, the layout of steering gear type of steering box, Worm and Wheel Screw and Nut. Cam and Lever, recirculating ball, steering wheel and column. Principles of steering angles, Principle of Ackermann Steering, corresponding angles of inner and outer wheels, Toe- out on turns, layout of track rods, caster, chamber, king pin inclination, Toe in centre point streeing, point of intersction, various angles in current use, wheel wobbles, radial runout, lateral runout, wheel balance, self-centering steering, power assisted steering. Transmission: The general layout of transmission system, description, construction and function of clutch, types of clutches, cone clutch, single plate clutches, multiplate clutches etc. Necessity for Gear Boxes. Over Drives, Fluid Couplings and Torque Convertors Propeller Shaft and Universal Joints. Methods of realaxle drive, hypoid, helical, worm and wheel. The differential unit description and operation. The rear-axle floating axles-full, semi and three quarter floating axles Front Wheel Drive. Brakes: Function and modes of operation types, Drum and Disc, leading and trailing, brake linkages. Compensating mechanisms of Brakes-Circulations, braking efficiency, stopping distances, principles of hydraulic brakes, brake testing. Wheels & Tyres: General description, rods, wheels and hubs, rim and tyre sizes, tube and tubeless tyres, radial and crossply inflation, pressure cause of tyre wear wheel balance.

3 AMB-3- AUTO-III (Auto Electrical System- Fault tracing) Electrical terms, simple electron theory, difference between conductors and insulators, magnets and magnetic phenomenon attraction and repulsion, simple magnetic fields, static electricity, explanation of potential, electric current- effects of current, magnetic, chemical and thermal, E.M.E. and P.D. resistance, Volt, Ampere, Ohm and Ohm s Law and electric circuit, simple cell, cells in series and parallel, resistance in series and parallel, Elementary theory of alternating current-supply. Peak, Average and R.M.S. Values. The general layout of electrical system, Reading of Wiring Diagrams. The Battery- six and twelve volts systems, positive and negative return systems. Storage battery construction, function charging care and maintenance. The automobile generator, principles of operation, constructional details care and maintenance. The Starter Motor, Construction and Function, Coil Ignition, Magneto Ignition, Sparking plugs, Sparking Gap, Ignition Timing. Contact brakers and Distributors, Condensers, Saturation Period and speed of vehicles, automatic advance mechanism. Generator output control, automatic cutout control, methods, third brush and compensated voltage control current control, battery charging valve and metal rectifier types, high rate battery tester and hydrometer, Lighting and electrical accessories, auxillary circuits, direction indicators, windscreen wipers, electric horns, petrol guage, temperature guage and other amenities like heater, cigar-lighter, fan etc. The electrical test bench for output regulation and brush setting of generators. Testing of generators by Grouler and Drop Test. AMB-4- PPLIED MECHANICS & WORKSHOP TECHNOLOGY (Statics, Dynamics & Hydraulics & Workshop technology) Statics: Matter, Force, effects of force: units of measurement of force, composition and resolution of forces in one plane, work, moment of force, couple, simple cases of Equilibrium, centre of gravity, stress, strain and elasticity, Hook s Law, forces- in simple frames, friction, simple mechanics, velocity, ratio and Mechanical Advantage, Efficiency, lever, inclined plane, screw and screw jack, pulley and pulley-blocks, wheel and axle gearwheel trains, simple belt drive. Hydraulics: Density and specific gravity, fluid pressure, Principle of Archimedes, transmission of pressure, Pascal s Law, Bramah Press, Hydraulic Accumulator, Simple suction and force pumps, head and energy of water, discharge through an orifice, Bernoulli s Theorem, Venturimrter. Workshop Technology: The fundamental workshop process, materials commonly used for Iron and Steel, different kinds of Iron and their composition in brief explanation about their manufacturing. Effects of different constituents, effects of addition of metals to steel, properties and uses of copper, zinc, aluminium and other common alloys, wood different kinds, their preservation, selection of wood for work. Smithy: Elements of Smithy and Forging, Smithy Tools, Welding, Lap welding, Butt welding etc. Various operations in forging a given simple machine part, heat treatment of simple workshop tools. Pattern making and foundry works: Material used for making a pattern, allowances for contraction, method of making a pattern for a simple machine part, Principles of Moulding, moulding sands, tools used, Cores and core boxes, Cupola

4 practice, method of Moulding and Casting, a given sample part, Defects in casting usually noticed and their Remedies. Soldering and welding: Sheet metal work, Solder and Fluxes, tools, Methods of soldering, Electric and gas, Welding Equipment and tools and method of welding. Fitting: Tools used, Chipping, Filling, Scrapping, Riveting, Tapping, Measuring Instrument and Gauges, methods of Marking out. Simple matching tools: The centre Lathe, Turning, Boring, Screw cutting, methods of Grinding, Cutting Tools and Drills, Simple Drilling Machine, Simple description of Milling, Grinding, Planing, Shaping and Slotting machines, use of simple Jigs and Fixtures. AMB-5 MACHINE DRAWING Free hand sketching with dimensions of simple Components, Sketches of simple assemblies, Drawing Instruments and their uses. Construction of common geometrical plane figures including circles and tangents and their applications to general marking out problems, Dimensioning and Lettering, Straight line, dividing a straight line into a number of equal parts and in a given ratio, construction of scales, rectilinear figures, regular polygons, circles, Principles of projection, plan and elevation, projection of rectangle, square, circle, cube, prisms and pyramids, sectional view of simple solid, conventional method of showing Threads, square ends, keys etc, Indication of Machined parts, Views of simple Machine Parts, Fixtures, simple bearings, Plummer Block, Automobile Components, Pistons, Connecting Rod, Gear Box, Clutch. AMB-6 WORKSHOP PRACTICE (Maintenance & repair) Engine: Top- overhauling of Engine. Equipment and procedure, possible engine troubles. Their diagnosis and their remedies, wear in an engine. Methods of dismantling, inspection, rectification or replacement, repair, re-assembly, adjustment and final testing of all components attention to bearing. Reboring of cylinders, fitting of liners. The use of the specialized equipments such as cylinder boring and honing equipment, cylinder gauges. Work on crank shaft, dressing of the crank pins, fitting piston rings, method of inserting a piston, checking connecting rod or alignment, use of alignments, jigs, sleeving press. Valve and valve seat grinder and valve refacer, Decarbonising. Engine tuning and testing equipment, practical tuning of a carburettor. Transmission: Lubrication of chasis, principle of operation and maintenance of lubrication equipment, wheel and maintenance of lubrication equipment, wheel alignment, wheel alignment gauges, caster, camber, kingpin inclination, gauges, removal and refitting of tyres repairing and vulcanising servicing of brakes, inspecting, relining and adjustment, trace steering troubles dismantling, repair and assembling of front axle units Servicing of Clutch, Servicing the Gear Box unit, adjustment of the Final Drive Servicing of the rear Axle, Final Testing of all the components.

5 Electrical testing equipments: Electrical testing equipments, battery repairs and charging High rate battery tester and hydrometer output regulation and brush setting of generators, current consumption and voltage drop of Starter Motors. Magneto and coil tests with spark gaps, rotary gap for advance and retard. Magneto Armeture tests, Coil and Condenser test, Armeture testing, withdraw and refitting of ball races, testing of field coils, Tests on automatic output, testing and focusing of head lamps, wiring up all electrical circuits, circuit tests, insulation tests, use of Voltmeter and Ammeter special instruments for fault finding.

AUTO MECHANICS. PAPER 1: will consist of forty multiple-choice objective questions all of which are to be answered in 1 hour for 40 marks.

AUTO MECHANICS. PAPER 1: will consist of forty multiple-choice objective questions all of which are to be answered in 1 hour for 40 marks. SCHEME OF EXAMINATION AUTO MECHANICS There will be three papers, Papers1, 2 and 3 all of which must be taken. Papers 1 and 2 shall be a composite paper to be taken at one sitting. PAPER 1: will consist