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Advance I.C. Engines TAE-II Power Point Presentation

Name Of Topic: Comparison Between SI and CI Engines. Advance I.C. Engines TAE-II Power Point Presentation. Prepared By- Adneya S. Deodhar Mech.6 th Semester Sec-A Roll No- 05. Heat Engine.

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Advance I.C. Engines TAE-II Power Point Presentation

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  1. Name Of Topic: Comparison Between SI and CI Engines Advance I.C. EnginesTAE-II Power Point Presentation Prepared By- Adneya S. Deodhar Mech.6th Semester Sec-A Roll No- 05

  2. Heat Engine • Definition: “Heat engine is a device which transforms the chemical energy of fuel into thermal energy and utilizes this thermal energy to perform useful work. ” • Thus using heat engine thermal energy is converted to mechanical energy in a heat engine. Heat engines classification is given below 1. Internal Combustion Engines (IC Engines) A. Rotary IC Engines • Open Cycle Gas Turbine • Wankel Engine B. Reciprocating IC Engines • Gasoline Engine (SI Engine) • Diesel Engine (CI Engine) 2. External Combustion Engines (EC Engines) A. Rotary EC Engines • Steam Turbine • Closed Cycle Gas Turbine B. Reciprocating EC Engines • Steam Engine • Stirling Engine

  3. Spark Ignition Engine (SI Engine) • The credit of invention of SI engine goes to Nicolaus A. Otto(1876). Therefore SI engine is also called as Otto Engine Four Stroke SI Engine • In a four stroke engine the cycle of operation is completed in four strokes of piston or two revolutions of crank shaft. During four strokes there are five events to be completed viz. suction , compression, combustion, expansion and exhaust. Each stroke consist of 180 degree of crankshaft rotation. The cycle of operation for an ideal four stroke SI engine consist of following strokes • Suction or intake stroke • Compression stroke • Expansion or power stroke • Exhaust stroke • Cycle of operation is shown in Fig.

  4. Working Of Four Stroke SI engine

  5. Ideal & Actual PV Diagram For 4 Stroke SI Engine Ideal PV diag. Actual PV diag.

  6. Sectional View Of SI Engine

  7. Animation Showing Working Of SI Engine

  8. Compression Ignition Engine (CI Engine) • The credit of invention of CI engine goes to Rudolf Diesel (1892). Four Stroke CI Engine • The four stroke CI Engine is similar to the four stroke SI engine but it operates at much higher compression ratio . The compression ratio for SI engine is between 6 to 10 while for CI engine it is between 16 to 20. • Working operation of CI engine is shown in fig.

  9. Working Of Four Stroke CI Engine

  10. Four Stroke CI Engine

  11. PV Diagram For Four Stroke CI Engine

  12. Animation Showing Working of CI Engine

  13. THANK YOU 

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