POWER AND PROPULSION
• Explain the relative position of camshaft lobes −− Theoretically −− Volumetrically −− Practical • Describe Valve Actuation Timing and its design compromise
• Discuss the basic differences between spark ignition versus compression ignition technologies and correctly apply them to a given application • Describe the limitation of each of the operating cycle technologies and/or the combustion/ ignition systems • Explain in terms of specifications and appropriateness the fundamental differences and benefits between the stroked engine technology and the rotary eccentric cycle Module V: Thermodynamics • Articulate the thermodynamic principles and definitions of some of the more practical commonly employed cycles: −− Otto Cycle • Appreciate the applicability of the fundamentals of thermal management, as well as the use of these concepts as a means to predict performance Module VI: Air/Fuel Delivery Systems • Apply combustion theory and the use of the stoichiometric ratio as it applies to internal combustion, hydrocarbon based engines • Demonstrate a working knowledge of the fundamental principles of fluid dynamics as they apply to liquid/air flow regimes within a closed channel • Discuss the economics of emissions as this concept applies to the concept of ‘Air/Fuel Ratio’ • Discuss the principles, properties and value of fluid flow through a venturi and how it provides the motive force to pull liquids into a flow stream, and then to cause mixing within that flow stream • Correctly identify components within a carbureted fuel/ air management system, and define their function and/or contribution to fuel management functions • Provide the same knowledge discourse on fuel injection systems and components • Realize the causes of emission production, due to the effects of design, operation, and components of an engine Module VII: Valve Train • Describe all components associated with and adjacent to the valve systems within the modern internal combustion engine • Detail all of the relevant operational characteristics of the camshaft, which includes a technical description of its: −− Function −− Design −− Diesel Cycle −− Mixed Cycle −− Atkinson Cycle
−− Low engine rotational speed −− High engine rotational speed
Module IX: Fuels and Combustion • Knowledgeably discuss the chemical composition of hydrocarbon based fuels, specifically the: −− Chemical constituents, chemical formula, the formulation process, the heat value and the expected potential energy of gasoline and diesel −− Meaning and method of derivation of the ‘Pump Number’ rating for gasoline, and the difference between ‘Pump Number’ and ‘Octane’ as it is typically incorrectly applied −− Value and use of ‘Research Octane Number’ and ‘Motor Octane Number’ as they apply to gasoline −− Meaning and method of derivation of the ‘Cetane’ rating for diesel, its use as a measure of fuel heating value, and its application when selecting fuel grades as a function of environmental conditions (i.e. primarily temperature −− Main by-products of combustion of gasoline and diesel with standard air • Give a general description of the expected by- products of hydrocarbon based combustion • Describe the beneficial properties associated with the fluid dynamics of laminar flow regime and its effect on flame propagation rates • Define the concept of compression ratio and its effect on combustion efficiency and potential energy release from the fuel • Discuss the relationship between compression ratio and typical combustion head configurations, design guidelines, and interrelated effects Module X: Ignition • Provide a comparison of spark ignition versus compression ignition • Give a general description of the spark ignition systems and components • Review the developmental history of ignition systems, their relative improvements and beneficial effect on emission reductions • Discuss authoritatively ignition theory, with specificity regarding the concepts of: −− Normal ignition −− Pre-ignition −− Pre-detonation • Compare and contrast the benefits and detractors of the various heat ranges of spark plugs • Explain the need for and effect of ignition timing
−− Benefits of various configurations −− Use as an emission control device
Module VIII: Component and Event Timing • Define the relationship between camshaft and crankshaft positions
211
3 ways to get a no-obligation price quote to deliver a course to your company: Call SAE Corporate Learning at +1.724.772.8529 | Fill out the online quote request at sae.org/corplearning | Email us at corplearn@sae.org
Made with FlippingBook Online newsletter