Question

A horizontal steam engine running at 120 r.p.m. has a bore of 250 mm and a stroke of 400 mm. The

connecting rod is 0.6 m and mass of the reciprocating parts is 60 kg. When the crank has turned

through an angle of 45° from the inner dead centre, the steam pressure on the cover end side is 550

kN/m2 and that on the crank end side is 70 kN/m2. Considering the diameter of the piston rod equal to

50 mm, determine: 1. turning moment on the crank shaft, 2. thrust on the bearings, and 3. acceleration

of the flywheel, if the power of the engine is 20 kW, mass of the flywheel 60 kg and radius of gyration

0.6 m.​

Answer 1

Explanation:

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