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"L" Scheme Sub Code: 22032

Unit 1:

PETROL ENGINES and DIESEL ENGINE: Petrol Engines –Types of engines, straight, V, Square engine –Valve gear  arrangements - types of valves – sodium cooled – Mushroom Valve – Crankshaft:Static balance and dynamic balance – torsional vibration dampers – analysis of performance of single and multi cylinder engines – Firing order 4, 6, & 8 – Detonation - Petrol Knock – Octane Number - Anti Knock Fuel. High Speed Diesel Engines –– Combustion of Diesel fuel - phases of combustion in four stroke engines – diesel knock - Cetane Number – fuel dopes – Types of Diesel Engine Combustion chamber – open, pre combustion and turbulent chamber, air cell and energy cell combustion chamber in TATA and UNO engines – Petrol engine tune up.

Unit 2:

FUEL FEED SYSTEM: Petrol fuel feed systems – layout – construction and working of mechanical and Electrical Fuel feed pumps – Fuel filters - Multi Point Fuel Injection – Air filters : types – dry type, wet type and oil bath type. Carburetion – principles – Simple Carburetors – Solex Carburetor – S.U. Carburetor, Zenith, Mikuni Carburetor. Inlet & Exhaust manifolds - Mufflers and Silencers- DTSI, VTI, CCVTI, PGMFI-petrol injection-MPFI
system necessity- merits and demerits. Diesel fuel feed system – Layout – Feed pump: single and double acting – FIP – jerk type & distributor type – Construction and operation – Diesel filter – Pre filter and Micro filter – Water separator – Injectors and Nozzles – Open type & Closed type, single & multi hole, pintle and pintex type nozzles. - Common Rail Direct Injection (CRDI) - Governors – Mechanical & Pneumatic type – Phasing & Calibration of fuel injection pumps – Injection timing – Testing of Injections. Super Charging – Its effect – Types of superchargers – Roots types, sliding vane and centralised types – Turbo chargers.

Unit 3:

COOLING AND LUBRICATION SYSTEM: Cooling system: Air cooling system - water cooling system – Comparison – Thermo syphon and pump circulation in water cooling system – Open type and Closed type in water cooling system – Thermostat – Construction – wax pellet and Bellows type – Water pump – Radiators – Cellular and tubular – Coolant types - Anti Freeze solution. Lubrication System: Splash - partial pressure system - Full flow and by pass systems – Characteristics of lubricating oils – classification & Identification of SAE oils – Filtering Systems –– Oil Strainer – Oil pumps – Gear and Rotor type – Construction and operation -Pressure Relief Valve – Construction. Draft tube – Positive Crankcase Ventilation Systems – Construction. Vapour recovery cooling system Oil Cooler.

Unit 4:

EMISSION FROM AUTOMOBILES: Various emissions from Automobiles – formation – effects of pollutants on environment and human beings – Emission formation in SI engines - carbon monoxide – unburnt hydrocarbon – Nitric oxide – Lead particulate – Ploy nuclear aromatic hydrocarbon emissions – Emission from C.I Engine – physical delay, chemical delay – significance – emission formation due to incomplete combustion – White, Blue and Black smokes – particulates – Noise pollution. Design and operating variables on emission formation.

Unit 5:

EMISSION CONTROL METHODS: Emission norms – EURO, USA, JAPAN and INDIA. Controlling of pollutants from engine – catalytic converters – charcoat canister control for evaporative emission – positive crank case ventilation system for unburnt hydro carbon emission reduction – Fumigation EGR ( Exhaust gas recirculation ) – Air injection – silencer design on sound reduction in automobiles. – Exhaust gas analyser – Smoke meter.

Text Book

1. Internal Combustion Engines, “Ganesan.V”, Tata-McGraw Hill Publishing Co., New Delhi 1994.
2. Internal Combustion Engines Theory and Practice, “Dr.K.K.Ramalingam”, Scitech Publications(India) Pvt.Ltd, Chennai-17, 2001.
3. Engine Emission, “Springer and Patterson”, Plenum Press, 1990.
    

Reference Book

1. Internal Combustion Engine analysis and Practice, “Obert.E.F” International Text Book Co., Scranton, Pennsylvania, 1988.
2. Internal Combustion Engine Fundamentals, “Heywood.J.B”, McGraw Hill Book Co., 1995.
3. Internal Combustion Engines, “Taylor.C.F”, MIT Press, 1972
4. Automobiles and Pollution SAE Transaction, 1995
5. SAE Transactions, " Vehicle emission ", 1982 (3 volumes). 

Automotive Engine "K" Scheme - Sub Code: 12133

Unit 1:

Petrol Engines – working principle of two stroke and four stroke engines – comparison – main bearings, Connecting rod – bearings – major parts of an engine – engine block, Cylinder head, Liner, Piston, Crankshaft, Camshaft – babbits – Precision inserts – shell bearings – Materials of construction – Types of engines, straight, V, Square engine – Combustion chamber design – L, F, I, T – types – Value gear arrangements, types of valves – sodium cooled – Mushroom Valve – Crankshaft Static Balance and dynamic balance – torsional vibration dampers – analysis of performance of single and multi cylinder engines – Firing order 4,6,&8 – Detonation / Petrol Knock – Octane No Anti Knock Fuel.

Unit 2:

Fuel feed systems:
Layout – construction and working of mechanical and Electrical Fuel feed pumps – Fuel filters Multi Point Fuel Inject on – Air filters, types – dry type, wet type and oil bath type.

Carburetion:
Principles – Simple Carburetors – drawbacks of circuits – float circuit starting circuit; ideal & low speed circuit – float circuit and acceleration circuit – Solex Carburetor – S.U. Carburetor, Zenith, Mikuni, Carburetor, Inlet & Exhaust manifolds Mufflers and Silencers- DTSI, VTI, CCVTI, PGMFI-petrol injection-MPFI system-necessity-merits and demerits.

Unit 3:

Cooling system:
Air cooling system, water cooling system – Comparison – Thermo – siphon and pump circulation in water cooling system – Open type and Closed type in water cooling system – Thermostat – Construction – wax pellet and Bellows type – Water pump – Radiators – Cellular and tubular – Coolant types Anti Freeze Constructional details.

Lubrication System:
Splash, partial pressure system – Characteristics of ubricating oils – classification & Identification of SAE oils – Filtering Systems – Full flow and by pass systems – Oil Strainer – Oil pumps – Gear & Rotor type –  Construction and operation  Pressure Relief Valve – Construction draft tube – Positive Crankcase Ventilation Systems – Construction draft tube – coolant type cooling system – Vapour recovery cooling system Oil Cooler.

Unit 4:

High Speed Diesel Engines – Two Stroke and Four  strokes – Combustion of Diesel fuel, phases of combustion in four stroke engines – diesel knock, Cetane No. – fuel dopes – Types of Diesel Engine Combustion chamber – open, pre combustion and turbulent chamber, air cell and energy cell combustion chamber in TATA and UNO engines – Catalytic converters, unleaded petrol – Petrol engine tune up – maintenance.

Unit 5:

Diesel fuel system:
Layout – Feed pump single and double acting – FIP – jerk type & distributor type– Construction and operation – Diesel filter – Pre filter and Micro filter – Water  separator – Injectors and Nozzles – Open type & Closed type, single & multi hole, pintle and pintex type nozzles.

Common Rail Direct Injection (CRDI).
Governors:
Mechanical & Pneumatic type – Phasing & Calibration of fuel injection pumps – Injection timing – Testing of Injections.

Super Chargers:
Its effect – Types of superchargers – Roots types, sliding vane and Centralised types– Turbo chargers.

Reference Books:

1. The Motor Vehicle – Newton and Steeds.
2. High Speed Combustion Engines – P. M. HELDT
3. High Speed Diesel Engines – P. M. HELDT