Shawn D Norman

US Patent:

20190218956, Jul 18, 2019

Filed:

Jan 15, 2018

Appl. No.:

15/871766

Inventors:

- Dearborn MI, US
Kerry Timothy HAVENER - Canton MI, US
Shawn David NORMAN - Grass Lake MI, US
Steven A. HORNBY - Ypsilanti MI, US

International Classification:

F01N 13/08
F01N 1/08

Abstract:

A vehicle exhaust system is provided. The exhaust system may include a muffler including a casing, an inlet tube extending therethrough, and an outlet pipe partially disposed therein. The exhaust system may also include an orifice tube that may have a tapered body inserted within an end of the outlet pipe that is disposed between a baffle and a wall of the casing. The orifice tube may also include an inlet portion flared from the tapered body configured to attenuate noise of exhaust gas funneling into the outlet pipe.