Physics · Thermodynamics
Which of the following correctly describes the air temperature after the compression stroke in a Compression Ignition (CI) engine?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1It falls below the initial ambient temperature due to expansion effects.
- 2It is warm but insufficient to ignite fuel, requiring a spark plug to initiate combustion.
- 3It rises high enough to ignite the injected fuel spontaneously without an external spark.✓
- 4It remains at the ambient room temperature.
Correct answer
It rises high enough to ignite the injected fuel spontaneously without an external spark.
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