  A new zero modes enhancement (ZME) model of the true QCD vacuum is breifly
described. It makes possible to analytically investigate and calculate
numerically low-energy QCD structure from first principles. Expressions of
basic chiral QCD parameters (the pion decay constant, the quark and gluon
condensates, the dynamically generated quark mass, etc) as well as the vacuum
energy density (up to the sign, by definition, the bag constant), suitable for
numerical calculations, have been derived. Solution to the Schwinger-Dyson (SD)
equation for the quark propagator in the infrared (IR) domain on the basis of
the ZME effect in QCD was used for this purpose. There are only two independent
quantities (free parameters) by means of which calculations must be done within
our approach. The first one is the integration constant of the above mentioned
quark SD equation of motion. The second one is a scale at which nonperturbative
effects begin to play a dominant role.
