Stages of Combustion in C.I Engines

What is the ignition delay period in a CI engine also known as?

Which curve does the pressure-time curve separate from during the start of combustion in a CI engine?

Why is the ignition delay period in a CI engine extremely important?

What happens to fuel immediately upon injection into the combustion chamber of a CI engine?

What is the specific period of inactivity called between the time when fuel hits the hot air in the combustion chamber and the time it starts burning?

Where is the delay period shown on a pressure crank angle diagram in a CI engine?

What causes diesel knock in a compression-ignition (CI) engine?

How does an increase in engine speed affect the delay period in milliseconds?

Which factor contributes to diesel knock related to injector nozzles?

Why is controlling diesel knock essential for engine efficiency?

How does an increase in engine output affect the air-fuel ratio and delay period?

What does a higher compression ratio in a CI engine lead to?

What is the primary characteristic of diesel knock in a CI engine?

How does an increase in the minimum auto ignition temperature impact the delay period?

Why might a CI engine with excessive carbon deposits experience knocking?

What aspect does the Cetane number evaluate in diesel fuel used in CI engines?

What is the primary role of a higher Cetane number in diesel fuels?

How does a higher Cetane number affect the ignition delay in diesel engines?

What potential issue might arise from extremely high Cetane numbers in diesel fuels?

Why is efficient mixing of air and fuel essential in the combustion chamber of a CI engine?

What is the purpose of a high compression ratio in Compression Ignition (CI) engines?

Why must the combustion chamber be robustly constructed in a CI engine?

How do the shape and geometry of the combustion chamber influence combustion in CI engines?

Why should the combustion chamber design be compatible with the engine's ignition system?

What is the difference between the physical delay and the chemical delay?

In a compression-ignition engine, what role does the delay period play in the combustion process?

What factor influences the physical delay in the ignition process of an engine?

Why is the physical delay shorter for light fuels compared to heavy viscous fuels?

Which phase is characterized by rapid pressure rise during combustion?

How does the chemical delay differ from the physical delay in terms of impact on engine performance?

What determines the duration of the period of rapid combustion in an engine?

What distinguishes the ignition lag in spark ignition engines from that in compression-ignition engines?

How do higher combustion chamber temperatures impact the physical delay?

What role does high turbulence play in reducing the physical delay?

Which component is crucial in preventing excessive temperatures within the combustion chamber?

What technology is employed to control nitrogen oxide (NOx) emissions in modern CI engines?

What is the primary function of swirl in a combustion chamber?

Which method involves introducing fuel directly into the combustion chamber using high-pressure injectors?

What type of motion does tumble refer to in the context of a combustion chamber?

Which design feature is responsible for enhancing turbulence by forcing the air-fuel mixture into the combustion zone?

What role does the pre-chamber design play in enhancing turbulence within the combustion chamber?

How does the intake system contribute to turbulence within the combustion chamber?

Which method is most effective in promoting efficient and rapid mixing of air and fuel in the combustion chamber?

Which technology uses high-velocity jets to induce turbulence and initiate combustion in a controlled manner?

What is the purpose of introducing exhaust gas into the intake air using EGR (Exhaust Gas Recirculation)?

In the context of combustion chambers for CI engines, which type features a shallow depth cavity in the piston?

What is the main advantage of open combustion chambers in CI engines?

What technology allows for the adjustment of valve timing, duration, and lift to influence air intake and exhaust processes?

Which chamber type is defined as having a divided combustion space with pressure differences between compartments during combustion?

What type of intake design can be tailored to induce turbulence in the incoming air-fuel mixture?