  In this paper, we suggest that the process in quark nova explosion may exist
widely in various kinds of supernova, although it only happens in a small part
in the core in most cases. And the contribution to the energy releasing of
whole supernova explosion can also be provided by QCD interacting term. In this
way we derive a general equation of energy quantity to be released in quark
nova process related to several parameters. After quark nova explosion process,
the remnant can be a quark star, or a neutron star with quark matter core if
this process only happens in a small part inside the compact star instead of a
"full" quark nova. We will also use a more generalized approach to analyse the
strangelets released from quark nova and will draw a possible interpretation of
why effects caused by strangelets have not been observed yet. Our result
suggests that the ordinary matter can only spontaneously transform into strange
quark matter by crushing them into high pressure under the extreme condition in
compact star, although generally the reaction would really be exergonic.
