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JNTU II Year B.Tech. AME II Semester syllabus
Posted Date: 12 Aug 2008 Resource Type: Articles/Knowledge Sharing Category: Syllabus
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Posted By: sunil Member Level: Diamond
Rating:  Points: 2
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THERMAL ENGINEERING - I
UNIT – I
Actual Cycles and their Analysis: Introduction, Comparison of Air Standard and Actual Cycles, Time Loss Factor, Heat Loss Factor, Exhaust Blowdown-Loss due to Gas exchange process, Volumetric Efficiency. Loss due to Rubbing Friction, Actual and Fuel-Air Cycles Of CI Engines.
UNIT-II
I.C. ENGINES : Classification - Working principles, Valve and Port Timing Diagrams, Air – Standard,
air-fuel and actual cycles - Engine systems – Fuel, Carburetor, Fuel Injection System, Ignition, Cooling and
Lubrication.
UNIT – III
Combustion in S.I. Engines : Normal Combustion and abnormal combustion – Importance of flame
speed and effect of engine variables – Type of Abnormal combustion, pre-ignition and knocking (explanation
of ) – Fuel requirements and fuel rating, anti knock additives – combustion chamber – requirements, types.
UNIT IV
Combustion in C.I. Engines : Four stages of combustion – Delay period and its importance – Effect of
engine variables – Diesel Knock– Need for air movement, suction, compression and combustion induced
turbulence – open and divided combustion chambers and nozzles used – fuel requirements and fuel rating.
UNIT – V
Testing and Performance : Parameters of performance - measurement of cylinder pressure, fuel
consumption, air intake, exhaust gas composition, Brake power – Determination of frictional losses and
indicated power – Performance test – Heat balance sheet and chart.
UNIT – VI
COMPRESSORS – Classification –positive displacement and roto dynamic machinery – Power producing and power absorbing machines, fan, blower and compressor – positive displacement and dynamic types – reciprocating and rotary types.
Reciprocating : Principle of operation, work required, Isothermal efficiency volumetric efficiency and effect of clearance, stage compression, undercooling, saving of work, minimum work condition for stage compression.
UNIT VII
Rotary (Positive displacement type) : Roots Blower, vane sealed compressor, Lysholm compressor –
mechanical details and principle of working – efficiency considerations.
Dynamic Compressors : Centrifugal compressors: Mechanical details and principle of operation –
velocity and pressure variation. Energy transfer-impeller blade shape-losses, slip factor, power input
factor, pressure coefficient and adiabatic coefficient – velocity diagrams – power.
UNIT-VIII
Axial Flow Compressors : Mechanical details and principle of operation – velocity triangles and energy
transfer per stage degree of reaction, work done factor - isentropic efficiency- pressure rise calculations –
Polytropic efficiency.
TEXT BOOKS:
1. I.C. Engines / V. GANESAN- TMH
2. Thermal Engineering / Rajput / Lakshmi Publications.
REFERENCES:
1. IC Engines – Mathur & Sharma – Dhanpath Rai & Sons.
2. Engineering fundamentals of IC Engines – Pulkrabek / Pearson /PHI
3. Thermal Engineering / Rudramoorthy - TMH
4. Thermodynamics & Heat Engines / B. Yadav/ Central Book Depot., Allahabad
5. I.C. Engines / Heywood /McGrawHIll.
6. Thermal Engineering – R.S. Khurmi & J.K.Gupta – S.Chand
7. IC Engines/ Ramalingam/ Scietech publishers
For more details, visit Http://jntu.ac.in/dap/syl.html
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