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We consider the Little Rip (LR), Pseudo Rip (PR) and bounce cosmologicalmodels in the Friedmann-Robertson-Walker (FRW) metric with nonzero spatialcurvature. We describe the evolution of the universe using a generalizedequation of state in the presence of a viscous fluid. The conditions of theoccurrence of the LR, PR and bounce were obtained from the point of view of theparameters of the generalized equation of state for the cosmic dark fluid,taking into account the spatial curvature. The analytical expressions for thespatial curvature were obtained. Asymptotic cases of the early and lateuniverse are considered. A method of Darboux transformation was proposed in thecase of models of an accelerating universe with viscosity.

Little Rip, Pseudo Rip and bounce cosmology from generalized equation of state in the Universe with spatial curvature