General Studies · Internal Combustion Engines
In an ideal air-standard four-stroke petrol engine, what assumption is made about the heat addition (burning) process?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1It takes a significant amount of time and occurs at constant pressure.
- 2It is a gradual process that starts before the piston reaches top dead centre.
- 3It starts at the bottom dead centre and continues as the piston moves up.
- 4It occurs instantaneously at constant volume when the piston is at the top dead centre.✓
Correct answer
It occurs instantaneously at constant volume when the piston is at the top dead centre.
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