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Example - Single cylinder 4-stroke engine The torque diagram for a single cylinder engine is shown below. The areas above below the mean torque line (in cm²) have been calculated on a graph where vertical scale is 1cm= 100Nm and the horizontal scale is 1cm = 90deg. a)The mean engine speed is 1500rpm. What flywheel inertia is required to the speed fluctuation to + 2%2

Example - Single cylinder 4-stroke engine The torque diagram for a single cylinder engine is shown below. The areas above below the mean torque line (in cm²) have been calculated on a graph where vertical scale is 1cm= 100Nm and the horizontal scale is 1cm = 90deg. a)The mean engine speed is 1500rpm. What flywheel inertia is required to the speed fluctuation to + 2%2

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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please write by hand                                                                                                                                                            

Example – Single cylinder 4-stroke engine The torque diagram for a single cylinder engine is shown below. The areas above and below the mean torque line (in cm²) have been calculated on a graph where the vertical scale is 1cm= 100Nm and the horizontal scale is 1cm = 90deg. a)The mean engine speed is 1500rpm. What flywheel inertia is required to limit the speed fluctuation to ± 2%? b)lf we want to limit the hoop stress to 5MN/m², what would be a suitable diameter of the flywheel if the density is 7200 Kg/m³? What would be the cross- sectional area of the rim? Torque a Mean torque line 1.2 0.45 1.8 3.45 Crankangle (deg) 1.35 0.45 f
Transcribed Image Text:Example – Single cylinder 4-stroke engine The torque diagram for a single cylinder engine is shown below. The areas above and below the mean torque line (in cm²) have been calculated on a graph where the vertical scale is 1cm= 100Nm and the horizontal scale is 1cm = 90deg. a)The mean engine speed is 1500rpm. What flywheel inertia is required to limit the speed fluctuation to ± 2%? b)lf we want to limit the hoop stress to 5MN/m², what would be a suitable diameter of the flywheel if the density is 7200 Kg/m³? What would be the cross- sectional area of the rim? Torque a Mean torque line 1.2 0.45 1.8 3.45 Crankangle (deg) 1.35 0.45 f
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