A 100 cc petrol engine with a compression ratio of 6 compresses the air fuel mixture to 900 kpa and 375 oc, at the end of compression the ignition is started and the pressure rises along a straight line and attains the highest value of 3.0 mpa after the piston has travelled 4% of the working stroke. The air fuel ratio is 15 : 1 take r for mixture as 0.275 kj/kg.K, calorific value of fuel = 44 mj/kg and cv = 0.965kj/kg-k. Find the heat loss per kg of charge during explosion. Flue gases and air has same gas constant.
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· A 100 cc petrol engine with a compression ratio of 6 compresses the air fuel mixture to 900 kpa and 375 oc, at the end of compression the ignition is started and the pressure rises along a straight line and attains the highest value of 3.0 mpa after the piston has travelled 4% of the working stroke.
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