Combustion and Emissions for Engineers

Public awareness regarding pollutants and their adverse health effects has created an urgent need for engineers to better understand the combustion process as well as the pollutants formed as by-products of that process. To effectively contribute to emission control strategies and design and develop emission control systems and components, a good understanding of the physical and mathematical principles of the combustion process is necessary. This seminar will bring issues related to combustion and emissions "down to earth," relying less on mathematical terms and more on physical explanations and analogies.

What Will You Learn

By attending this seminar, you will be able to:
  • Identify and describe the important processes in combustion and emission
  • Identify the formation mechanisms and reduction strategies of pollutant species in combustion systems
  • Recognize the effects of engine design and operating conditions on combustion and emission
  • Explain the technology and the logic behind after-treatment of pollutants
  • Identify the underlying laws and principles used in combustion and emission black-boxed computer programs
  • Explain the role chemical kinetics plays in the design of low-emission combustion systems
  • Identify design trade-offs between increasing engine performance and maintaining low emission characteristics

Is This Course For You

Engineers working on the design of combustion engine components, software development and application for modeling of thermal-fluid, combustion and emissions processes, and those working on the reduction of harmful pollutants emissions will find this course valuable.

Materials Provided

This data is not available at this time

Course Requirements

This data is not available at this time

Topics

DAY ONE
  • Air Composition
  • Concept of "Complete Combustion"
  • A/F & Stoichiometric (A/F)ST, and (Equivalence Ratio)
  • Lean, Rich, Stoichiometric Mixture
  • First and Second Law and Applications in Combustion Systems
  • Adiabatic Flame Temperature, Heat of Reaction (or Heating Value) and Their Usage
  • Thermodynamic and Chemical Equilibrium
  • Demonstration Applications of Equilibrium Using Computer Simulation (SuperState)
DAY TWO
  • Chemical Kinetics
    • General concept and rate of reaction (RR)
    • Classifying reactions
  • Reaction Between Gas Molecules and a Solid Surface
    • Physical absorption, chemisorption, and heterogenous catalysts
    • Nature of catalysis reaction
    • Arrhenius equation and activation energy
    • Analysis of data for complex reaction
    • General characteristics of catalysis
  • Explosion
    • Simplified generalized kinetic model (slow reaction and explosion)
    • Explosion and flammability limits
  • Mechanism of H2O2 Reaction
  • Oxidation of CO
  • Explosion Limits of Hydrocarbons (HC)
    • Experimental combustion characteristics
    • Methane and Paraffin oxidations
    • Demonstration applications of chemical kinetics using SuperState
  • Autoignition and Induction Time Using SuperState
  • Flame and its Propagation
    • Laminar flame structure
    • Laminar flame speed (SL)
    • Flammability limits
    • Quenching distance dT
    • Flame stabilization
DAY THREE
  • Combustion in SI Engines
    • Simple thermodynamic analysis of SI engine combustion
    • Flame and unburned gas motions
    • Mass fraction burned and heat release analysis
    • Combustion process characterization
    • Flame structure, speed, and effects of various parameters on burning rate
    • SL turbulence & turbulent flame
    • Cyclic variability, partial burning & misfire
  • Pollutant Formation and Control
    • Nature of problem SI & CI 
    • NO and NO2 formation kinetics and reduction
    • CO kinetics and reduction
    • Unburned Hydrocarbon (UHC) emission and reduction
    • Effects of design and operating parameters on HC and NOx
    • Demonstration Applications of Pollution Effects Using SuperState -- Minor species; Lean-burn engine
  • Exhaust Gas Treatments
    • Options
    • Catalytic converters
    • Thermal reactors
  • Typical Engine Emission Results
  • Emission Measurements
  • FTP Emission Standards