公开(公告)号：US20220364490A1

公开(公告)日：2022-11-17

申请号：US17317865

申请日：2021-05-11

Applicant: Caterpillar Inc.

Inventor： Samuel S. Kumar ,  Matthew F. Fahrenkrug ,  Daniel R. Barb ,  Ramakrishna Manda ,  Paul A. Zwart ,  Thierry A. Marchione ,  Kevin L. Martin

IPC: F01N3/20 ,  F01N3/30

Abstract: An injector for a diesel exhaust fluid (DEF) delivery system includes a first conduit extending along a longitudinal direction; a second conduit extending along the longitudinal direction and disposed within the first conduit; a nozzle tip having a side wall and an end wall; and a shell surrounding the first conduit and being spaced apart from the first conduit along a radial direction. The side wall has a thickness extending along the radial direction from an external surface of the nozzle tip to an inner surface of the second conduit. The end wall defines an outlet flow passage therethrough, and the outlet flow passage is in fluid communication with the first conduit and the second conduit via a chamber defined by an internal surface of the nozzle tip.