Inderscience Publishers

Theoretical and practical aspects for balancing crankshafts of six-cylinder V60 degree engines

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Courtesy of Inderscience Publishers

Owing to manufacturing variations, a counterweighted crankshaft still needs to be dynamically balanced on a balance machine before being put into service. To balance a non-symmetric counterweighted crankshaft, disconnected from the piston and connecting rod assemblies, on a balance machine, it is necessary to attach correct ring weights on crankpins to represent the dynamic effect of the piston and connecting rod assemblies. The central issues are: What should be the sizes and the locations of the ring weights? This paper presents a set of formulae for determining the ring weights needed for balancing crankshafts of six-cylinder V60 degree engines. The paper also discusses practical considerations, such as the design, manufacturing and installation of the ring weights, the method of testing, and subsequent adjustment if needed.

Keywords: six-cylinder engines, counterweighted crankshafts, balance machines, ring weights, vehicle vibration, V60 degree engines, rotating mass, reciprocating mass, dynamic balancing

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