A two stroke IC engine has a stroke length of 120 mm and cylinder diameter 80 mm. Its mean effective pressure is 4 \times10^5 N/m^2 and the crankshaft speed is 1500 r.p.m. What is its indicated power (in kW)?

SSC JE Mechanical Engineering 2017 Set 5 Paper

Question : 127 of 200

Marks: +1, -0

A two stroke IC engine has a stroke length of 120 mm and cylinder diameter 80 mm. Its mean effective pressure is

4 ×10^5

m^2

and the crankshaft speed is 1500 r.p.m. What is its indicated power (in kW)?

Solution:

Indicated power is given as

IP=\PLAN/60

={4×10^5×0.12×(π/4)0.08^2×1500}/60

IP = 6031.5 W
IP = 60.31 kW

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