INJECTOR HAVING TANGENTIALLY ORIENTED PURGE LINE

摘要

A fluid injector (4-2) for 'an exhaust treatment device (40) is disclosed. The fluid injector may have a housing (70) at least partially forming a fluid chamber (98). The housing may have a central axis (90), and a fluid passagewa (80) configured to supply fluid to the fluid chamber. The supply of fluid may be in a tangential direction relative to the central axis. The injector (42) can provide mixing with pressurized air and can be used to regenerate a particulate trap (53).