US 12,071,880 B1
Exhaust assemblies and vehicles including an exhaust assembly
Bruce Bezner, Lindsay, TX (US); Aaron Walterscheid, Muenster, TX (US); and Kevin Walterscheid, Muenster, TX (US)
Assigned to PACCAR Inc, Bellevue, WA (US)
Filed by PACCAR Inc, Bellevue, WA (US)
Filed on Oct. 20, 2023, as Appl. No. 18/491,519.
Int. Cl. F01N 13/10 (2010.01); F01N 1/08 (2006.01)
CPC F01N 13/102 (2013.01) [F01N 1/08 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A vehicle, comprising:
an engine;
an exhaust pipe, fluidly coupled to the engine;
a vehicle body comprising a fairing having an exhaust opening; and
an exhaust assembly, the exhaust assembly comprising:
an expansion chamber having a first opening fluidly coupled to the exhaust pipe and a second opening aligned with the exhaust opening in the fairing, a cross-sectional area of the second opening being greater than a cross-sectional area of the first opening, and
a choke plate attached to the expansion chamber and shaped and sized to cover at least ten percent of the cross-sectional area of the second opening.