Automotive and Combustion Engine Technology(Department Elective III) — Summer 2020

Explain the combustion phenomenon for gasoline engine.

List the advantages of engine downsizing.

What are the types of nozzle are used in gasoline direct injection?

Explain salient feature of spray guided combustion system for gasoline direct injection

What is charge stratification combustion?

Explain supercharging of engine.

Explain the reasons of knocking in SI Engine. List various methods to reduce knocking.

Enlist various after treatment technologies for diesel and gasoline vehicle.

What is lean boost direct injection (LBDI) concept? Explain the working principle of LBDI

What are the advantages of combining direct injection and turbo charging in spark- ignition engine?

What is internal exhaust gas recirculation system and external exhaust gas recirculation system?

What is auto ignition phenomenon? What is the basic difference between auto ignition combustion and SI combustion?

Explain effect of different properties of gasoline on combustion phenomenon

Explain factors which increase NOx production in CI engine.

With a neat sketch explain the process of turbo charging?

Differentiate homogenous combustion and diffusion combustion based on any seven aspects.

Explain the principle of auto ignition combustion in the gasoline engine.

What is Turbo Lag in Turbocharging?

Explain the effect of fuel injection timing on auto ignition combustion.

Give advantage of HCCI engine.

Which are the modifications required to change from SI combustion to auto ignition combustion?

Describe how the selective catalytic reduction (SCR) NOx control as an alternative to lean NOx traps (LNT)

What is Gasoline Direct Injection?

Explain EGR with the neat sketch

Describe the stages of combustion of HCCI in gasoline engines.1