LECTURE NOTES ON SUB : INTERNAL COMBUSTION ENGINE & GAS TURBINES 8th SEMESTER, B.TECH MECHANICAL ENGINEERING COURSE CODE – BME 423 Prepared by: Mrs. Dulari Hansdah Assistant Professor DEPARTMENT OF MECHANICAL ENGINEERING VEER SURENDRA SAI UNIVERSITY OF TECHNOLOGY, BURLA, ODISHA DISCLAIMER This document does not claim any originality and cannot be used as a substitute for prescribed text books. The information presented here is merely a collection by the committee members for their respective teaching assignments. Various sources as mentioned at the refer ence of the document as well as freely available material from internet were consulted for preparing this document. The ownership of the information lies with the respective authors or institutions. Further, this document is not intended to be used for commercial purpose and the committee members are not accountable for any issues, legal or otherwise, arising out of use of this document. The committee members make no representations or warranties with respect to the accuracy or completeness of the contents of this document and specifically disclaim any implied warranties of merchantability or fitness for a particular purpose. The committee members shall be liable for any loss of profit or any other commercial damages, including but not limited to special, in cidental, consequential, or other damages. SYLLABUS Module - I 1. Introduction: Classification of IC engines, working cycles, comparison of t wo stroke & four stroke engines, Comparison between SI & CI engines. (2) 2. Fuel combustion &Fuel injection: Structure & composition of IC engine fuel, Fuel rating properties of fuel, Fuel additives and non -petroleum fuels. Fuel air requirement for ideal normal operation, maximum power & quick acceleration, simple carburetor & its draw back. Practical carburetor, petrol injection. Requirements & type of diesel injection system, fuel pump, injectors &nozzles.(8) Module - II 3. Ignition &combustion in IC Engines: Battery, magneto & Electronic ignition systems, Ignition timing, spark advance mechanism. Stage s of SI engine combustion, Effect of engine variables on ignition lag flame front propagation. Abnormal combustion, pre - ignition & detonation, Theory of detonation, Effect of engine variables on detonation, Control of detonation. Requirement of good combus tion chambers for SI engines. Stages of C I engine combustion. Effect of engine variables on delay periods. Diesel Knock & methods of control in CI engine combustion chambers.(10) Module - III 4. Testing and performance : Power, Fuel and air measurement methods , performance of SI and CI Engines, Characteristics curve. Variables affecting performance and methods to improve engine performance.(5) 5. Cooling and Lubricating Systems, Engine Emission & Controls: Air cooling and Water cooling system, Effect of cooling on power output & efficiency, properties of lubricants &types of lubricating system engine emission & its harmful effect. Methods of measuring pollutants and control of engine emission.(7) Module – IV 6. Gas turbines: Introduction, open & closed cycle gas turb ines, Constant volume &constant pressure cycles. Thermodynamic analysis of ideal basic cycle with regeneration reheat & intercooling .Analysis of ideal basic cycle considering actual losses. Application of gas turbine.(8) LESSON PLAN Sl. No. Lecture No. Topics to be covered 1 Lecture -01 What is IC engines and components of IC engine, IC engine terminology, classification of IC engines, comparison of Two stroke &four stroke engines, Comparison between SI & CI engines, valve and port timing diagram 2 Lecture -02 Working cycles -Otto, Diesel and Dual cycle, problem solving 3 Lecture -03 Fuel- structure & composition of IC engine fuel, properties of SI and CI engine fuel, fuel rating 4 Lectu