Subtopic: I.C. engine systems – fuel, cooling, lubrication, ignition, electrical, intake and exhaust
Question Statement:
A single cylinder four-stroke diesel engine has an engine displacement volume of 9 L, the engine rotates at 2400 rpm and its volumetric efficiency is 88%. The actual air inducted into the cylinder in m³ s⁻¹ is _________. [round off to three decimal places]
Official Answer Key:
0.157 to 0.159
Step-by-Step Solution & Explanation
• 4-stroke: 1 induction event per 2 revolutions. N=2400rpm=40rev/s ⟹ 20 inductions/s.
• Actual flow = 0.009 m³ × 20 × 0.88 = 0.1584 m³/s
Computed value: 0.158 m³/s (within official range 0.157–0.159)
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