  The present paper deals with calculations based on a standard model of cosmic
ray acceleration in Supernova remnants (SNR) and on the latest astronomical
data concerning the variety in Supernovae types, energies as well as the sites
of their explosions. The results obtained allow explaination of the main
features of all particle cosmic ray spectrum, including the 'knee'. This
conclusion is based essentially on the premise that energy of accelerated CR in
the given SNR is proportional to the kinetic energy of this explosion, that
stresses the input of high energy explosions and suppresses the contribution of
low energy explosions to the total CR flux.
