A 4-stroke, 5 cylinder engine produces a brake load of 5.6 kN with a torque arm of 30 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 i. ii. 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. ii. iv.
A 4-stroke, 5 cylinder engine produces a brake load of 5.6 kN with a torque arm of 30 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 i. ii. 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. ii. 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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solve part (iv)
Transcribed Image Text: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
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.
power;
ii.
ii.
iv.
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