A 3.2-liter, four-cylinder, four-stroke cycle, direct injection SI supercharged engine operates at 4000 RPM. Compression ratio is c = 9 and air fuel ratio (AF) is equal to 15. The supercharger has an isentropic efficiency of 94% and a mechanical efficiency in ts link with the engine of 90%. It is desired that air be delivered to the cylinders at 62°C and 170 kPa, while ambient conditions are 20 °C and 100 kPa. The properties of air are cp = 1.005 kJ/kg-K, cy = 0.718 kJ/kg-K, R = 0.287 kJ/kg K, and k = 1.4. Determine: a) Amount of aftercooling needed ( Heat which is removed in aftercooler). [KW) b) Engine power lost to run supercharger. [KW]

A 3.2-liter, four-cylinder, four-stroke cycle, direct injection SI supercharged engine operates at 4000 RPM. Compression ratio is c = 9 and air fuel ratio (AF) is equal to 15. The supercharger has an isentropic efficiency of 94% and a mechanical efficiency in ts link with the engine of 90%. It is desired that air be delivered to the cylinders at 62°C and 170 kPa, while ambient conditions are 20 °C and 100 kPa. The properties of air are cp = 1.005 kJ/kg-K, cy = 0.718 kJ/kg-K, R = 0.287 kJ/kg K, and k = 1.4. Determine: a) Amount of aftercooling needed ( Heat which is removed in aftercooler). [KW) b) Engine power lost to run supercharger. [KW]

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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