Key requirement of a good I.C. engine combustion chamber: choose the best criterion. Select the most appropriate characteristic of a well-designed combustion chamber.
Mechanical Engineering
IC Engines and Nuclear Power Plants
Difficulty: Easy
Choose an option
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AMinimum turbulence
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BLow compression ratio
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CHigh thermal efficiency and power output
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DLow volumetric efficiency
Answer
Correct Answer: High thermal efficiency and power output
Explanation
Concept/ApproachAn effective combustion chamber promotes rapid, stable combustion (adequate turbulence and mixture motion), good volumetric efficiency, and supports higher compression ratios—leading to high efficiency and power density.
Why others are wrong“Minimum turbulence” harms combustion speed; “low compression ratio” and “low volumetric efficiency” reduce performance.
Final AnswerHigh thermal efficiency and power output.