公开(公告)号：US20210017894A1

公开(公告)日：2021-01-21

申请号：US16515271

申请日：2019-07-18

Applicant: Tenneco Automotive Operating Company Inc.

Inventor： Scott D. CARPER ,  Sakib R. KAZI

IPC: F01N13/18

Abstract: A single-piece tubular shell for an exhaust device includes a first peripheral wall portion, a second peripheral wall portion, and a third peripheral wall portion. The first peripheral wall portion at least partially defines a first interior region having a first longitudinal axis extending therethrough. The second peripheral wall portion at least partially defines a second interior region having a second longitudinal axis extending therethrough. The second longitudinal axis is non-coaxially aligned with the first longitudinal axis. The third peripheral wall portion extends between and connects the first peripheral wall portion and the second peripheral wall portion such that the first interior region and the second interior region are in fluid communication. The first peripheral wall portion, the second peripheral wall portion, and the third peripheral wall portion are integrally formed and define an uninterrupted, smooth shell inner surface.