US 12,188,498 B2
Baffle plate devices for sensor flow improvement in exhaust gas aftertreatment systems
Peng Quan, Portland, OR (US); Jeffrey Asaro, Portland, OR (US); and Kevin Sisken, Southport, NC (US)
Assigned to DAIMLER TRUCK NORTH AMERICA, LLC, Portland, OR (US)
Filed by DAIMLER TRUCK NORTH AMERICA, LLC, Portland, OR (US)
Filed on Nov. 15, 2022, as Appl. No. 17/987,501.
Claims priority of provisional application 63/284,476, filed on Nov. 30, 2021.
Prior Publication US 2023/0167837 A1, Jun. 1, 2023
Int. Cl. F15D 1/00 (2006.01); F01N 11/00 (2006.01); F01N 13/08 (2010.01); G01N 1/22 (2006.01)
CPC F15D 1/0005 (2013.01) [F01N 11/002 (2013.01); F01N 13/08 (2013.01); G01N 1/2247 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A baffle plate device, comprising:
first and second side extensions comprising first and second tabs extending therefrom, respectively, wherein:
the first and second tabs are configured to mount to respective interior and opposing portions of an outlet conduit that provides a flow path to the atmosphere for exhaust gas treated by an exhaust gas aftertreatment apparatus; and
the first and second side extensions are configured to deflect a first portion of the treated exhaust gas in the flow path towards first and second tips of first and second sensors that extend through first and second sensor apertures in a wall of the outlet conduit; and
a baffle aperture disposed between the first and second side extensions and configured to permit passage of a second portion of the treated exhaust gas in the flow path so as to direct the second portion of the treated exhaust gas to impact a third tip of a third sensor that extends through a third sensor aperture in the wall of the outlet conduit.