Curriculum
- 6 Sections
- 41 Lessons
- 1 Day
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- Fundamentals of Combustion in IC Engines8
- 1.1Key Concepts: Importance of combustion, Stoichiometry, AFR, equivalence ratio, Ignition delay, flame speed, heat release rate
- 1.2Otto Cycle & Diesel Cycle
- 1.3Situational Awareness: Combustion’s impact on emissions, efficiency, thermal loading
- 1.4Influence of modern fuels, ethanol, biodiesel, CNG blends
- 1.5Practical constraints in engines: temperature, pressure, turbulence
- 1.6Real-Life Cases: Automotive combustion challenges in Indian vs global conditions
- 1.7Thermal efficiency improvement programs in OEMs
- 1.8Exercise: Calculate stoichiometric AFR for gasoline vs diesel using given data sets
- Combustion Chemical Reactions & Flame Characteristics4
- 2.1Concepts Chemical kinetics: reaction pathways, radicals, chain branching, Ideal vs practical combustion, In-cylinder thermodynamics
- 2.2Situational Awareness: Effects of EGR, turbocharging, altitude, ambient temperature, Why engines deviate from ideal behaviour
- 2.3Real Cases: CO/HC formation under transient conditions, Diesel soot formation at high loads
- 2.4Exercise: Flame propagation visualisation using simulation clips
- Gasoline & Diesel Combustion — Stages, Curves & Analysis9
- 3.1Concepts SI combustion: ignition – flame kernel – flame propagation burnout
- 3.2CI combustion: ignition delay – premixed burn – diffusion burn – late burn
- 3.3P-θ (pressure-crank angle) diagrams
- 3.4Heat release analysis
- 3.5Situational Awareness: Effects of injection timing, ignition timing, swirl/tumble
- 3.6Constraints in modern GDI, CRDi engines
- 3.7Real Examples: OEM case- misfire in turbo GDI during cold start
- 3.8Real Examples: Case- diesel knock due to poor injector spray
- 3.9Exercise: Identify combustion phases on provided P-θ graph
- Abnormal Combustion & Knock Analysis7
- 4.1Concepts: SI knock vs CI knock, Pre-ignition, detonation, super-knock
- 4.2Concept: Knock indicators, knock sensors, frequency bands & Octane, cetane, fuel chemistry impact
- 4.3Situational Awareness: Real driving emissions (RDE) impact on combustion stability
- 4.4E-fuels & hybrid powertrain knock sensitivities
- 4.5Real-Life Cases Case: Super-knock in turbocharged downsized engines
- 4.6Case: High-altitude diesel knock in commercial vehicles
- 4.7Exercise: Knock intensity analysis using sample vibration/pressure data
- Advanced Combustion Concepts7
- 5.1Concepts: HCCI, PCCI, RCCI combustion, LTC (Low Temperature Combustion)
- 5.2GCI (Gasoline Compression Ignition), Hydrogen & alternative fuel combustion
- 5.3Situational Awareness: Regulatory push: BS6 – CAFE – Net-Zero
- 5.4Why industry is moving to advanced combustion concepts
- 5.5Real Examples: Case- OEM experiment with HCCI mode
- 5.6Case: Dual-fuel RCCI in heavy-duty engines
- 5.7Exercise: Map which advanced combustion strategy suits which application
- Integrated Case Study & Simulation Workshop6
- 6.1Engine Cycle Exercise: effect of AFR, spark timing, injection timing
- 6.2Knock prediction using simplified algorithm
- 6.3Heat release rate adjustment
- 6.4Case Study: Engine knocking under high load, Poor cold-start performance
- 6.5Case Study: High NOx under transient conditions, Soot spike in diesel vehicle
- 6.6Root-cause analysis, Corrective actions, Design & calibration recommendations
Case Study: High NOx under transient conditions, Soot spike in diesel vehicle
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