  We investigate how to facilitate the injection of domain walls in chiral
ferromagnetic nanowires by electrical means. We calculate the critical current
density above which domain walls are injected into the nanowire depending on
the material parameters and the source of interaction including spin-transfer
torques as well as spin-orbit torques. We demonstrate that the
Dzyaloshinskii-Moriya interaction can significantly reduce the required
critical current to inject the types of domain walls favored by the
Dzyaloshinskii-Moriya interaction. We find that in chiral magnets it is only
possible to shed a single domain wall by means of spin-orbit torques, as they
modify the ground state orientation of the system. In contrast, for
spin-transfer-torque induced shedding of domain walls, we show that there exist
two different critical current densities for the two different domain wall
chiralities, respectively.
  Additionally, for the consecutive creation of domain walls by means of
spin-transfer torques, we find that the interaction between the domain walls
cannot be neglected and even may lead to the pairwise annihilation of
consecutive domain walls with opposite chiralities.
