  We report signatures of episodic accretion in young stellar objects (YSOs)
that emerge in protobinary configurations in a gravoturbulent gas collapse. We
find in most of these protobinary systems strong accretion bursts between the
two companions with a recurrence time-scale of about 1 kyr. The accretion rate
onto the secondary star typically exceeds that onto the primary with a peak
value of 2 $\times 10^{-2}$ M$_{\odot}$ yr$^{-1}$ for the former and 6 $\times
10^{-3}$ M$_{\odot}$ yr$^{-1}$ for the latter. We propose that the secondary
companion which remains more active in its episodes of accretion bursts,
especially for the gas cores with subsonic velocity dispersion, may provide
observational opportunities to find traces of episodic accretion in the
surrounding gas of the embedded YSOs that are in a binary configuration. Also,
protostars evolving as single objects in the same environment show fewer
accretion bursts and all together a more steady mass growth history. The
prestellar cores with subsonic velocity dispersion exhibit an order of
magnitude more intense accretion bursts than in the case of cores with
supersonic velocity dispersions. The latter shows the formation of some of the
protobinaries in which the primary acts as a more actively accreting companion.
This can support these binaries to become systems of extreme mass ratio.
Moreover, the YSOs in binary configurations with small semi-major axis $a$
$\approx$ 50 au and high mass ratio $q$ > 0.7 support phases of intense
episodic accretion. The eccentricity, however, seems to play no significant
role in the occurrence of accretion bursts.
