A phenomenological scission point model including temperature-dependent shell effects is used to solve the energy partition problem as a function of mass asymmetry (A1/A2) for plutonium fission. Relevant fragment data such as average excitation energy and total kinetic energy are used as the basis for applying a temperature distribution model based on the Madland-Nix theory that includes the full mass number dependence of spectra, a realistic temperature distribution of fragments, a modified center-of-mass (CMS) spectrum ansatz, CMS anisotropy of neutron emission, and competition of neutron and gamma-ray emission. This new model describes neutron multiplicity, energy, and angular distribution of prompt fission neutrons. Calculated data for 238Pu, 240Pu, and 242Pu spontaneous fission are presented and discussed in comparison with experimental data.