A 4-stroke, 5 cylinder engine produces a brake load of 5.6 kN with a torque arm of 80 cm. The engine runs at 480 rpm. The bore and the stroke are 250 mm and 320 mm respectively. Calculate, the engine brake power; the brake mean effective pressure if the specific fuel consumption is 0.230 kg/kW.hr and the lower calorific value of the fuel is 43,200 kJ/kg, calculate the brake thermal efficiency; if the volumetric air-fuel ratio is 24.5/1 and the free air pressure and the temperature are 1.013 bar and 27°C respectively, calculate the volumetric efficiency of the engine. i. ii. iii. iv.

A 4-stroke, 5 cylinder engine produces a brake load of 5.6 kN with a torque arm of 80 cm. The engine runs at 480 rpm. The bore and the stroke are 250 mm and 320 mm respectively. Calculate, the engine brake power; the brake mean effective pressure if the specific fuel consumption is 0.230 kg/kW.hr and the lower calorific value of the fuel is 43,200 kJ/kg, calculate the brake thermal efficiency; if the volumetric air-fuel ratio is 24.5/1 and the free air pressure and the temperature are 1.013 bar and 27°C respectively, calculate the volumetric efficiency of the engine. i. ii. iii. iv.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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