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Q4. A high-performance four-stroke SI engine has a swept volume of 875 cm and a compression ratio of 10:1. The indicated efficiency is 55% of the corresponding Otto cycle. At 8000 rpm, the mechanical efficiency is 85%, and the volumetric efficiency is 90%. The mass air: fuel ratio is 13:1 and the calorific value of the fuel is 44 MJ/kg. The air is induced at 20° C and 1 bar. Calculate: (a) the overall efficiency And the SFC. (b) The air mass flowrate, power output and BMEP

Q4. A high-performance four-stroke SI engine has a swept volume of 875 cm and a compression ratio of 10:1. The indicated efficiency is 55% of the corresponding Otto cycle. At 8000 rpm, the mechanical efficiency is 85%, and the volumetric efficiency is 90%. The mass air: fuel ratio is 13:1 and the calorific value of the fuel is 44 MJ/kg. The air is induced at 20° C and 1 bar. Calculate: (a) the overall efficiency And the SFC. (b) The air mass flowrate, power output and BMEP

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
Problem 1.1MA
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Q4. A high-performance four-stroke SI engine has a swept volume of 875 cm² and a compression ratio of 10:1. The indicated efficiency is 55% of the corresponding Otto cycle. At 8000 rpm, the mechanical efficiency is 85%, and the volumetric efficiency is 90%. The mass air fuel ratio is 13:1 and the calorific value of the fuel is 44 MJ/kg. The air is induced at 20° C and 1 bar. Calculate: (a) the overall efficiency And the SFC. (b) The air mass flowrate, power output and BMEP
Transcribed Image Text:Q4. A high-performance four-stroke SI engine has a swept volume of 875 cm² and a compression ratio of 10:1. The indicated efficiency is 55% of the corresponding Otto cycle. At 8000 rpm, the mechanical efficiency is 85%, and the volumetric efficiency is 90%. The mass air fuel ratio is 13:1 and the calorific value of the fuel is 44 MJ/kg. The air is induced at 20° C and 1 bar. Calculate: (a) the overall efficiency And the SFC. (b) The air mass flowrate, power output and BMEP
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