JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Prerequisites

Thermodynamics, Thermal Engineering I & II

Course objectives: The course is intended to

• Analyze engine cycles and the factors responsible for making the cycle different from the Ideal cycle.
• Apply principles of thermodynamics, fluid mechanics, and heat transfer to influence the engine’s performance.
• Understand the delay period and fuel injection system.
• Become aware of the relevance of environmental and social issues on the design process of internal combustion engines

Course Outcomes

At the end of the course, the student will be able to:

• Apply thermodynamic analysis to IC engines and describe combustion phenomena in spark ignition and compression ignition engines.
• Describe the working of major systems used in conventional and modern engines.
• Summarize the methods used to improve engine performance and estimate performance parameters.
• Describe engine emission control techniques and implement viable alternate fuels.

UNIT - I

Introduction – Historical Review – Engine Types – Design and operating Parameters. Cycle Analysis: Thermo-chemistry of Fuel – Air mixtures, properties – Ideal Models of Engine cycles – Real Engine cycles - differences and Factors responsible for – Computer Modeling.

UNIT - II

Gas Exchange Processes: Volumetric Efficiency – Flow through ports – Supercharging and Turbo charging. Charge Motion: Mean velocity and Turbulent characteristics – Swirl, Squish – Pre-chamber Engine flows.

UNIT - III

Engine Combustion in SI Engines: Combustion and Speed – Cyclic Variations – Ignition – Abnormal combustion Fuel factors, MPFI, SI engine testing. COMBUSTION IN CI ENGINES: Essential Features – Types of Cycle. Pr. Data – Fuel Spray Behavior – Ignition Delay – Mixing Formation and control, Common rail fuel injection system.

UNIT - IV

Pollutant Formation and Control: Nature and extent of problems – Nitrogen Oxides, Carbon monoxide, unburnt Hydrocarbon and particulate – Emissions – Measurement – Exhaust Gas Treatment, Catalytic converter, SCR, Particulate Traps, Lean, NOx, Catalysts.

UNIT - V

Engine Heat Transfer: Importance of heat transfer, heat transfer and engine energy balance, Convective heat transfer, radiation heat transfer, Engine operating characteristics. Fuel supply systems for S.I. and C.I engines to use gaseous fuels like LPG, CNG and Hydrogen. Modern Trends in IC Engines: Lean Burning and Adiabatic concepts, Rotary Engines, Modification in I.C engines to suit Bio – fuels, HCCI and GDI concepts.

R19 M.Tech. Thermal Engineering

TEXT BOOKS:

• 1. I.C. Engines by V. Ganesan, TMH
• 2. I.C. Engines Fundamentals by Heywood, TMH

REFERENCE BOOKS:

• 1. I.C. Engines by G.K. Pathak & DK Chevan, Standard Publications
• 2. Dual-Fuel Diesel Engines by Ghazi A. Karim, CRC Press
• 3. I.C. Engines by RK Rajput, Laxmi Publications
• 4. Internal Combustion Engines by S.S. Thipse, Jaico
• 5. Computer Simulation of C.I. Engine Process by V. Ganesan, University Press
• 6. Fundamentals of IC Engines by HN Gupta, PHI, 2nd edition
• 7. I.C. Engines by Fergnson, Wiley.
• 8. The I.C. Engine in theory and Practice Vol. I /Teylor /IT Prof. And Vol. II
• 9. Computer Simulation of Spark-Ignition Engine Processes by V. Ganesan, Universities Press. R19 M.Tech. Thermal Engineering M. TECH. I Year II Sem. (THERMAL ENGINEERING)