7 A four-cylinder, four-st roke SI engine, having a bore of 10 cm and stroke 9 em runs at 4000 rpm. The fuel uused has a carbon content of 84.50 per cent and hydrogen content of 15.50 per cent by weight. The volumetric efficiency of the engine at 75% of full throttle and at 1000 rpmm is 0.85 referred to 300 K and 1 bar The engine is to be supPplied with a mixture of air coefficient 0.95 when running at 75%% of full throttle. Calculate the throat diameter of the ventini if the air velocity at throat is not to exceed 200 m/s under the above operating conditions. Also calculate the rate of fuel flow in kg/s at the pressure drop at venturi throat. Discharge Coeflicient for the venturi is 0.S and the arca ratio of the venturi is 0.8. Take R for air as 0.287KJ kg k ad for fnel vaponr is 0.09 kJ kg K.
7 A four-cylinder, four-st roke SI engine, having a bore of 10 cm and stroke 9 em runs at 4000 rpm. The fuel uused has a carbon content of 84.50 per cent and hydrogen content of 15.50 per cent by weight. The volumetric efficiency of the engine at 75% of full throttle and at 1000 rpmm is 0.85 referred to 300 K and 1 bar The engine is to be supPplied with a mixture of air coefficient 0.95 when running at 75%% of full throttle. Calculate the throat diameter of the ventini if the air velocity at throat is not to exceed 200 m/s under the above operating conditions. Also calculate the rate of fuel flow in kg/s at the pressure drop at venturi throat. Discharge Coeflicient for the venturi is 0.S and the arca ratio of the venturi is 0.8. Take R for air as 0.287KJ kg k ad for fnel vaponr is 0.09 kJ kg K.
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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Transcribed Image Text:7 A four-cylinder, four-st roke SI engine, having a bore of 10 cm and stroke
9 em runs at 4000 rpm. The fuel uused has a carbon content of 84.50 per
cent and hydrogen content of 15.50 per cent by weight. The volumetric
efficiency of the engine at 75% of full throttle and at 1000 rpmm is 0.85
referred to 300 K and 1 bar The engine is to be supPplied with a mixture
of air coefficient 0.95 when running at 75%% of full throttle. Calculate
the throat diameter of the ventini if the air velocity at throat is not to
exceed 200 m/s under the above operating conditions. Also calculate the
rate of fuel flow in kg/s at the pressure drop at venturi throat. Discharge
Coeflicient for the venturi is 0.S and the arca ratio of the venturi is 0.8.
Take R for air as 0.287KJ kg k ad for fnel vaponr is 0.09 kJ kg K.
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