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5. Calculate the brake thermal efficiency of a supercharged 4-cylinder, four stroke with a bore and stroke of 3.94" x 5.91". The compression ratio is 14. Using a brake dynamometer reads a scale of 143.3 pounds with 13.8 arm at 440 rpm. For a perio test, 1.433 pounds of fuel with 40,702 KJ/kg heating value are completely burned ratio of 0.07 a.) 31.8%

5. Calculate the brake thermal efficiency of a supercharged 4-cylinder, four stroke with a bore and stroke of 3.94" x 5.91". The compression ratio is 14. Using a brake dynamometer reads a scale of 143.3 pounds with 13.8 arm at 440 rpm. For a perio test, 1.433 pounds of fuel with 40,702 KJ/kg heating value are completely burned ratio of 0.07 a.) 31.8%

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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5. Calculate the brake thermal efficiency of a supercharged 4-cylinder, four stroke cycle Diesel engine with a bore and stroke of 3.94" x 5.91". The compression ratio is 14. Using a brake torque analysis, the dynamometer reads a scale of 143.3 pounds with 13.8 arm at 440 rpm. For a period of 14 minutes of test, 1.433 pounds of fuel with 40,702 KJ/kg heating value are completely burned with air with fuel-air ratio of 0.07 a.) 31.8% b.) 34.1% c.) 32.7% d.) 33.5%
Transcribed Image Text:5. Calculate the brake thermal efficiency of a supercharged 4-cylinder, four stroke cycle Diesel engine with a bore and stroke of 3.94" x 5.91". The compression ratio is 14. Using a brake torque analysis, the dynamometer reads a scale of 143.3 pounds with 13.8 arm at 440 rpm. For a period of 14 minutes of test, 1.433 pounds of fuel with 40,702 KJ/kg heating value are completely burned with air with fuel-air ratio of 0.07 a.) 31.8% b.) 34.1% c.) 32.7% d.) 33.5%
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