US 12,473,854 B2
Exhaust structure for exhaust manifold
Vikas Sheth, Edwards, IL (US); Nataraj Srinivasan, Chennai (IN); Pradeep Venugopal, Chennai (IN); and Parthiban Pechiyannan, Pin (IN)
Assigned to Caterpillar Inc., Peoria, IL (US)
Filed by Caterpillar Inc., Peoria, IL (US)
Filed on Mar. 12, 2024, as Appl. No. 18/602,543.
Claims priority of provisional application 63/489,820, filed on Mar. 13, 2023.
Prior Publication US 2024/0309792 A1, Sep. 19, 2024
Int. Cl. F01N 13/10 (2010.01)
CPC F01N 13/10 (2013.01) 20 Claims
OG exemplary drawing
 
1. An exhaust structure for an exhaust manifold associated with an engine, the exhaust structure comprising:
a first inlet section arranged at a first end of the exhaust structure, wherein the first inlet section defines a first inlet flow passage configured to receive exhaust gas, the first inlet flow passage defining a normalized cross-sectional area of flow;
a second inlet section arranged at a second, opposite end of the exhaust structure, the second inlet section defining a second inlet flow passage configured to receive exhaust gas, the second inlet flow passage defining the normalized cross-sectional area of flow; and
an intermediate section disposed between the first inlet section and the second inlet section and in fluid communication with each of the first inlet section and the second inlet section, the intermediate section including:
a flange;
an outlet section defining an outlet flow passage extending through the flange, the outlet flow passage being in fluid communication with each of the first inlet flow passage and the second inlet flow passage and including a flange opening extending through the flange; and
an exhaust redirection section disposed between the first inlet section and the second inlet section, the exhaust redirection section having a reduced cross-sectional area of flow, forming a flow opening through which exhaust is configured to flow, the reduced cross-sectional area of flow being measured at a midpoint along a length of the flange that is less than the normalized cross-sectional area of flow of the first inlet flow passage.