Q7:- The variation of crank shaft torque of a four cylinder engine may be approximately represented by taking the torque as zero for crank angle 0° and 180° and as 225 N.m for crank angle 20° and 45° ,the intermediate positions of the torque graph being straight lines. The cycle is repeated every half revolution. The average speed is 600 rpm. Supposing that the engine drives a machine requiring a constant torque, determine the weight of the flywheel with radius of gyration 25 cm which must be provided so that the total fluctuation of the speed shall be one percent.

Q7:- The variation of crank shaft torque of a four cylinder engine may be approximately represented by taking the torque as zero for crank angle 0° and 180° and as 225 N.m for crank angle 20° and 45° ,the intermediate positions of the torque graph being straight lines. The cycle is repeated every half revolution. The average speed is 600 rpm. Supposing that the engine drives a machine requiring a constant torque, determine the weight of the flywheel with radius of gyration 25 cm which must be provided so that the total fluctuation of the speed shall be one percent.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter11: Heat Transfer By Radiation

Section: Chapter Questions

Problem 11.12P

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