US 12,378,906 B1
Exhaust manifold assembly for internal combustion engine
Md Anwarul Karim, Peoria, IL (US); Zhengfei Hu, Wuxi (CN); and Ryan M. Brown, West Lafayette, IN (US)
Assigned to Caterpillar Inc., Peoria, IL (US)
Filed by Caterpillar Inc., Peoria, IL (US)
Filed on Jun. 7, 2024, as Appl. No. 18/736,846.
Int. Cl. F01N 3/04 (2006.01)
CPC F01N 3/046 (2013.01) [F01N 2260/024 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An exhaust manifold assembly for an internal combustion engine, comprising:
an inner housing configured to receive an exhaust gas from a cylinder head of the internal combustion engine;
an outer housing receiving at least a portion of the inner housing, wherein the outer housing is configured to receive a coolant flow that passes over the at least the portion of the inner housing; and
a plurality of manifold flanges coupled to the outer housing and configured to mount on the cylinder head, wherein at least one of the plurality of manifold flanges has a sleeve portion forming a passage that receives a part of the inner housing therein and receives the coolant flow;
wherein the passage of the sleeve portion has a first converging region, a diverging region and a second converging region for the coolant flow.