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ME-503 (C) · Alternate Automotive Fuels & Emissions/Important Questions

Alternate Automotive Fuels & Emissions (ME-503 (C)) - Important Questions

  1. Unit 214 Marks High Priority

    Explain the mechanisms of formation of hydrocarbons (HC), carbon monoxide (CO) and nitrogen oxides (NOx) in spark-ignition engines and discuss factors that influence their formation.

    Core theory question: mechanisms of pollutant formation in SI engines; frequently asked and central to emissions unit.

  2. Unit 214 Marks High Priority

    Compare and contrast diesel and petrol emissions (types, relative magnitudes, health/environmental impacts) and outline major control strategies.

    Comparative assessment of emissions from the two major engine types; commonly asked for evaluating control strategies and impacts.

  3. Unit 214 Marks High Priority

    Describe biodiesel production by esterification/transesterification, list key properties of biodiesel and discuss its effects on engine performance and emissions.

    Comprehensive biodiesel question covering production routes, key fuel properties and their influence on engine behaviour and emissions; high repeat frequency.

  4. Unit 210 Marks High Priority

    Discuss alcohol fuels and alcohol–gasoline blends (properties and engine performance).

    Focused topic on alcohol fuels and their blends with gasoline; addresses properties and engine performance impacts — appears frequently in Unit 2.

  5. Unit 210 Marks High Priority

    Explain the types of catalytic converters and measurement techniques (NDIR, FID, chemiluminescent analyzer, GC, smoke meters) used for exhaust emission analysis.

    Emission control technology and measurement techniques question; tests knowledge of converters and instrumentation used in exhaust analysis.

  6. Unit 210 Marks High Priority

    Discuss storage, handling and safety aspects of gaseous fuels (CNG, LPG, hydrogen, biogas) and fuel-metering considerations for gaseous fuels.

    Gaseous fuels operational and safety considerations; important for questions on alternative gaseous fuels and fuel-system design.

  7. Unit 210 Marks High Priority

    Explain biodiesel properties, esterification and performance/emissions of vegetable-oil fuels.

    Practical application question: assesses understanding of vegetable-oil based fuels (biodiesel feedstocks) and their engine performance/emissions characteristics.

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