COMBUSTION IN IC ENGINES
- What is meant by abnormal combustion in SI engine?
- Define octane number?
- Discuss the factors which promote pre-ignition?
- What are the basic requirements of SI engine combustion chamber?
- Name any two chemicals that can be used as additives in SI engine?
- Describe the term knock rating of fuels.
- How are the SI engine fuels rated? What do you understand by octane number-100?
- Discuss about compression ratio and inlet temperature of mixture for operating variables on detonation.
- How does detonation affect engine performance in SI engines?
- Discuss about spark timing, engine speed and size of bore for operating variables on detonation.
- Define cetane number?
- Briefly explain the importance of flame speed on combustion?
- What is the range of overall A/F ratio in a CI engine combustion chamber?
- How do the injection timing and fuel quality affect the engine knock?
- What is the role of ignition accelerators in CI engines, name one ignition accelerator?
- How CI engine fuels are rated? Explain
- Define swirl, squish and turbulence in CI engine
- List out the advantages and disadvantages of non-turbulence combustion chamber?
- List out the advantages and disadvantages of turbulence combustion chamber?
- Enlist the various methods of controlling diesel knock?
Composed By:
R.Satheesh, M.E., Asso.Prof.,E-Mail: rsatheeshemail@gmail.com
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