Abstract
This paper presents a multi-body model of a four-cylinder, four-stroke diesel engine, incorporating component flexibility. The model also includes engine firing order and experimentally measured combustion time history. The paper presents numerical predictions for conical motion of the flywheel as a result of combined torsion-deflection modes of the flexible crankshaft system. The half-engine order responses induce complex three-dimensional whirling motion of the flywheel, which is responsible for repetitive shock loading of the drivetrain system through impact with the clutch system. This leads to an assortment of noise and vibration concerns, one of which is in-cycle vibration of the clutch system. Numerical prediction of this vibration response agrees well with experimental findings.
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More From: Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics
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