US 12,228,055 B1
Exhaust system sensor and housing assembly
Yong Yi, Dunlap, IL (US); Nathan Folger, Chillicothe, IL (US); and Christopher Schell, Altura, MN (US)
Assigned to Caterpillar Inc., Peoria, IL (US)
Filed by Caterpillar Inc., Peoria, IL (US)
Filed on Dec. 15, 2023, as Appl. No. 18/541,653.
Int. Cl. F01N 13/00 (2010.01)
CPC F01N 13/008 (2013.01) [F01N 2560/026 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A sensor and housing assembly comprising:
a sensor configured to detect a quantity of a gas in engine exhaust; and
a housing including:
an inner upstream wall;
a first inner side wall having a sensor opening for the sensor;
an inner downstream wall opposite to the inner upstream wall; and
a second inner side wall opposite to the first inner side wall, and having a housing inlet and a housing outlet that is opposite to the sensor opening in the first inner side wall, wherein the housing inlet is upstream of the housing outlet, relative to a direction of flow of the gas in the engine exhaust,
wherein the sensor is positioned within the sensor opening on the first inner side wall, and a tip of the sensor protrudes through the housing outlet.