A six cylinder 2-stroke/cycle, single acting...

Question 1 of 270705eccefa1bacbc34ba4d47423

A six cylinder 2-stroke/cycle, single acting diesel engine has a 580 mm bore and a 1700 mm stroke. What indicated power per cylinder will be developed if the average mean effective pressure is 15.3 kg/cm² at a speed of 120 RPM?

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Question 1 of 27070

🔍 Key Concepts

• Indicated power (IP) formula for reciprocating engines (use mean effective pressure, piston area, stroke, number of power strokes per second) • Difference in power-stroke frequency between 2‑stroke and 4‑stroke engines at the same RPM • Unit conversions: bore in mm to area in m², stroke in mm to m, and mean effective pressure in kg/cm² to N/m² (Pa)

💭 Think About

• Write the general formula for indicated power for a single cylinder, then adjust it for a 2‑stroke engine running at 120 RPM. • Carefully compute the piston area from the 580 mm bore, and the stroke in meters from 1700 mm, then substitute into the formula using SI units. • After finding power in watts, convert the result to kW and compare with the options provided; think about whether the result seems reasonable for ONE cylinder of this size.

✅ Before You Answer

• Make sure you used 2‑stroke power stroke frequency (one power stroke per revolution) rather than the 4‑stroke assumption (one power stroke every two revolutions). • Verify that kg/cm² has been converted to Pa (N/m²) before using it in the SI‑based power formula. • Confirm you are calculating per cylinder power only (do NOT multiply by 6), since the question asks for indicated power per cylinder.