A 3L, 4-cylinder gasoline engine produces 150 kW at 4,500 rpm when the operating standard condition are 1 bar and 30 °C. The compression ratio of the engine is 9, the heating value of the fuel is 44,400 kJ/kg and the mechanical efficiency is 73%. The engine is brought to an Industrial Plant 3,500 ft above sea level which presented a volumetric efficiency of 70 % at 10.3 kgair/kgfuel- At this condition, find: a) brake power, kW b) brake engine efficiency, % c) Pmg kPa d) Mechanical Efficiency, %

Elements Of Electromagnetics
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ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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A 3L, 4-cylinder gasoline engine produces 150 kW at 4,500 rpm when the
operating standard condition are 1 bar and 30 °C. The compression ratio of the
engine is 9, the heating value of the fuel is 44,400 kJ/kg and the mechanical
efficiency is 73%. The engine is brought to an Industrial Plant 3,500 ft above sea
level which presented a volumetric efficiency of 70 % at 10.3 kgair/kgruel. At this
condition, find:
a) brake power, kW
b) brake engine efficiency, %
c) Pmg kPa
d) Mechanical Efficiency, %
Transcribed Image Text:A 3L, 4-cylinder gasoline engine produces 150 kW at 4,500 rpm when the operating standard condition are 1 bar and 30 °C. The compression ratio of the engine is 9, the heating value of the fuel is 44,400 kJ/kg and the mechanical efficiency is 73%. The engine is brought to an Industrial Plant 3,500 ft above sea level which presented a volumetric efficiency of 70 % at 10.3 kgair/kgruel. At this condition, find: a) brake power, kW b) brake engine efficiency, % c) Pmg kPa d) Mechanical Efficiency, %
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