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Dynamics of MachineryThe purpose of balancing reciprocating masses is to: (i) Increase engine temperature (ii) Reduce unbalanced forces and couples (iii) Increase friction (iv) Reduce fuel supply.20262mDynamics of MachineryWrite a short note on reciprocating masses balancing by revolving mass.20267mDynamics of MachineryExplain partial balancing of locomotives and derive the expression for hammer blow.20267mDynamics of MachineryFor a two-cylinder locomotive with cranks at 90°: reciprocating mass per cylinder = 300 kg; crank radius = 0.3 m; driving wheel diameter = 1.8 m; distance between cylinder centre lines = 0.65 m; distance between driving wheel central planes = 1.55 m. Determine (i) the fraction of reciprocating masses to be balanced if hammer blow is not to exceed 46 kN at 96.5 km/h, (ii) variation in tractive effort, and (iii) maximum swaying couple.20267m
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