Аннотация:In this paper we present a new model of the heliospheric interface - the region of the solar wind interaction with the local interstellar medium. The main advancement of this new model is in multicomponent treatment of charged particles in the heliosphere. All charged particles are divided into several co-moving sorts. The coldest sort with parameters typical for original solar wind protons is considered in the frame of fluid approximation. The hot pickup proton components created from interstellar H atoms and heliospheric ENAs by charge exchange, electron impact ionization and photoionization, are treated kinetically. The charged components are considered in the model self-consistently with interstellar H atoms, which a-re described kinetically as well. To solve the kinetic equation for H atoms we use Monte Carlo method with splitting of trajectories, which allows 1) to reduce statistical uncertainties for correct interpretation of observational data, 2) to separate all H atoms in the heliosphere into several populations depending on the place of their birth and on the type of parent protons.