Q7: An automobile has a 3-liter SI V6 engine that operates on a 4-stroke cycle at 3600 rpm and produces a brake output torque of 205 N.m. The engine is squared and its compression ratio equals 9.5. At this speed air enters the cylinders at 85 kPa and 60°C, air-fuel ratio equals 15, and the mechanical efficiency of the engine is 85%. Take the heating value of fuel equals to 44 MJ/kg. Calculate: bore, stroke, mean piston speed, clearance volume per cylinder, brake power, indicated power, bmep, imep, bsfc, indicated thermal efficiency, brake thermal efficiency and the volumetric efficiency.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Q7: An automobile has a 3-liter SI V6 engine that operates on a 4-stroke cycle at
3600
rpm and produces a brake output torque of 205 N.m. The engine is squared and
its compression ratio equals 9.5. At this speed air enters the cylinders at 85 kPa and
60°C, air-fuel ratio equals 15, and the mechanical efficiency of the engine is 85%.
Take the heating value of fuel equals to 44 MJ/kg. Calculate: bore, stroke, mean
piston speed, clearance volume per cylinder, brake power, indicated power, bmep,
imep, bsfc, indicated thermal efficiency, brake thermal efficiency and the volumetric
efficiency.
Transcribed Image Text:Q7: An automobile has a 3-liter SI V6 engine that operates on a 4-stroke cycle at 3600 rpm and produces a brake output torque of 205 N.m. The engine is squared and its compression ratio equals 9.5. At this speed air enters the cylinders at 85 kPa and 60°C, air-fuel ratio equals 15, and the mechanical efficiency of the engine is 85%. Take the heating value of fuel equals to 44 MJ/kg. Calculate: bore, stroke, mean piston speed, clearance volume per cylinder, brake power, indicated power, bmep, imep, bsfc, indicated thermal efficiency, brake thermal efficiency and the volumetric efficiency.
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