- Mechanical B Sta 4 Cylinder U Stroke Diesel Engine Develops 25 Kw At 2000rpm U At S Up Break Specific Fuel Consumptio 1 (146.92 KiB) Viewed 27 times
mechanical B ( STA 4 cylinder u stroke diesel engine develops, 25 kw at 2000rpm u at's up break specific fuel consumption (BSF) is 0.26 kg/kWhore Calculate the power output of the engine and its Bere when the fuel rate is reduced by 40% at the same spoed. The efficiency is 80%. Assume that the indicator thund efficiency changes linearly with the equivalence ratio and Truce is o l percent increase in indicated thermal officiency for or increase in the equivallence ratio. Equivalence ration 16) at a higher fuel flow rate is 0.666. 22. An 8 cylinder cylinder automobile petool engine of 10 maa bene and 90mm stroke has a compression ratio of 7. the engine develops 136 kW at 4000 rpm. The engine operates at 20% rich in fuel and the [atmospheric conditions are 2T C and 760 mm of Hg barometer. is the Bs FC is 0.34 kg/kWher. Estimate the power output and IBSFC when i) Barometer is 740 mm Hy and temp. of 47°C. a) Barometer is 775 mm of Hg and temp of 70 . the frictional mean effective presence at 4000 rpm is 2.10 bar 10 °C