SI Automobile engine operates at WOT on a four-stroke air standard Otto Cycle at 3000rpm. Fuel is isooctane with AF = 14, a heating value of 49,554 KJ/kg. The engine has compression ratio of 7.4:1 and a stroke to bore ratio of S/B = 1.128. At the start of the compression stroke, conditions in cylinder combustion chamber are 1 bar and 671.67 Rankine. It can be assumed that there is 4% exhaust residual left over the previous cycle. This cycle consists of 4 cylinder with 3.1 Liter Sl automobile engine. Use k = 1.332, Cv = 0.821 KJ/kg.K. Heat added is 2.226 Kilojoules. Determine: Bore of the cylinder in centimeter and Stroke of the cylinder in centimeter.

SI Automobile engine operates at WOT on a four-stroke air standard Otto Cycle at 3000rpm. Fuel is isooctane with AF = 14, a heating value of 49,554 KJ/kg. The engine has compression ratio of 7.4:1 and a stroke to bore ratio of S/B = 1.128. At the start of the compression stroke, conditions in cylinder combustion chamber are 1 bar and 671.67 Rankine. It can be assumed that there is 4% exhaust residual left over the previous cycle. This cycle consists of 4 cylinder with 3.1 Liter Sl automobile engine. Use k = 1.332, Cv = 0.821 KJ/kg.K. Heat added is 2.226 Kilojoules. Determine: Bore of the cylinder in centimeter and Stroke of the cylinder in centimeter.

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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Cycle work of an air standard otto engine is 1100 kj/kg. Maximum cycle temperature is 3300 deg. C and the temperature at the end of isentropic compression is 700 deg. C. Calculate the compression ratio of the engine. (A) 9.34 (B) 6.25 7.78 (D) 8.54