B.E. (Automobile Engineering) Internal Combustion Engines Syllabus - Mumbai University 2026

Atkinson Cycle and Miller Cycle, Fuel Air and Actual working cycles analysis, Valve Timing Diagram, LHR & VCR Engines, Homogeneous charge compression Ignition, Rotary Engine-Six stroke engine concept (No Numerical from this module)

Module 2: Spark Ignition Engines

• Fuel Supply System: Automotive engine air-fuel mixture requirements, principle of carburetion & working (only introduction – No Numerical) Fuel Injection: Single-point and Multipoint injection, Gasoline Direct Injection Ignition System: Schematic details and working of different types of Ignition systems in SI Engines Combustion: Combustion phenomenon in SI Engines, Ignition delay, Flame propagation, Pressure-Crank angle diagram, Detonation and Knocking, Factors affecting combustion and detonation, Introduction to combustion chamber design, Types of combustion chambers University of Mumbai , Rev 2019 13

Module 3: Compression Ignition Engines

• Fuel Injection Systems: Air injection systems, Airless/solid injection systems, Common rail, individual pump, distributor and unit systems. Injection pumps, Fuel injector, Types of nozzles, Electronically controlled CRDI system Combustion: Combustion phenomenon in C I engines, Stages of combustion, Delay period, Knocking, Pressure-Crank angle diagram, Factors affecting combustion and knocking, Types of combustion chambers

Module 4: Engine lubrication: Types of Lubricants, their properties, SAE rating of Lubricants, Types of Lubrication systems.

• Engine Cooling: Necessity of engine cooling, disadvantages of overcooling, Cooling systems and their comparison: Air cooling, Liquid cooling Supercharging/Turbo-charging: Objectives, Limitations, Methods and Types, Different arrangements of Turbochargers. Latest Trends in power boosting methods. Engine Testing and Performance:

Module 5: Measurement of Brake Power, Indicated Power, Frictional Power, Fuel Consumption, Air flow, BMEP, Performance characteristics of SI and CI Engines, Effects of load and speed on Mechanical, Indicated Thermal, Brake Thermal and Volumetric Efficiencies, Heat Balance Sheet. Engine Exhaust Emission and its control:

• Constituents of exhaust emission and its harmful effects on environment and human health, Formation of NOx, HC, CO and particulate emissions, Methods of controlling emissions; Catalytic convertors, particulate traps, Exhaust Gas Recirculation, EURO and BHARAT norms.

Module 6: I C Engine Fuels:

• Gasoline - Alcohol - Hydrogen - Natural Gas and Liquefied Petroleum Gas - Biodiesel- Biogas - Producer Gas: Properties - Suitability - Engine Modifications - Merits and Demerits as fuels. Basics of Electronic Engine Controls: Electronic Control Module (ECM): Components, requirement & working. Sensors: Throttle Position, Crankshaft Position, Camshaft Position, Inlet Air Temperature, Coolant Temperature, Mass Air flow and Exhaust Gas Oxygen sensors (their construction and importance in ECM) Electronic Spark control, Air Management system, Idle speed control University of Mumbai , Rev 2019 14

Module 4: Only Four questions to be solved. Links for online NPTEL/SWAYAM courses:

Module 1: https://nptel.ac.in/courses/112/103/112103262/

Module 2: https://nptel.ac.in/courses/112/104/112104033/

Module 3: https://onlinecourses.nptel.ac.in/noc20_me42/preview

Module 4: https://nptel.ac.in/noc/courses/noc20/SEM1/noc20-me42/

• University of Mumbai , Rev 2019 15

Text Books

• 1 A Course in Internal Combustion Engine, Mathur and Sharma, Dhanpat Rai & Sons, New Delhi, 2001
• 2 Internal Combustion Engine, V Ganesan, McGraw-Hill, 1995
• 3 Internal Combustion Engines, Domkundwar & Domkundwar, Dhanpat Rai & Co., 2013
• 1 Internal Combustion Engines Fundamentals, Heywood, McGraw Hill, 1988
• 2 High Speed Combustion Engines, Heldt, Oxford IBH Publishing Co., Calcutta, 1985
• 3 Internal Combustion Engines, V.L. Maleeve, McGraw-Hill Inc.,US; International 2 Revised ed edition, 1964
• 4 Fundamental of Internal Combustion Engines, Gill and Smith, 4/E,. Oxford & IBH Publishing Company Pvt. Limited, 2007
• 5 Fundamentals of Internal Combustion Engines, Gupta, Prentice-Hall of India Pvt.Ltd (June 1, nd 2006) 2 ed,
• 6 Internal Combustion Engine, S.L. Beohar