Exhaust sensor baffle
AssigneeFaurecia Emissions Control Technologies, USA, LLC
InventorNeil Burge
Life of this patent
Estimating the term…
Abstract
An exhaust system includes an exhaust duct that defines an exhaust gas passage extending along an axis and which has a cross-section extending across the axis. At least one sensor opening in the exhaust duct is configured to receive an exhaust gas sensor. A baffle is positioned within the exhaust gas passage and includes a plurality of guide channels with open cross-sections. Each guide channel extends from a first end facing an inner surface of the exhaust duct to a second end opposite the first end. The guide channels guide exhaust gas from different regions of the cross-section toward the at least one sensor opening.
Claims24
An exhaust system comprising:
- an exhaust duct defining an exhaust gas passage extending along an axis and having a cross-section extending across the axis;
- at least one sensor opening in the exhaust duct that is configured to receive an exhaust gas sensor;
- and
- a baffle positioned within the exhaust gas passage, the baffle including a plurality of guide channels with open cross-sections, each guide channel extending from a first end facing an inner surface of the exhaust duct to a second end opposite the first end, and wherein the guide channels guide exhaust gas from different regions of the cross-section toward the at least one sensor opening.
An exhaust system comprising:
- an exhaust duct defining an exhaust gas passage extending along an axis and having a cross-section extending across the axis, and wherein the exhaust duct includes at least one sensor opening;
- at least one SCR catalyst upstream of the sensor opening;
- a NOx sensor mounted within the sensor opening and extending to a sensor tip that is within the exhaust gas passage;
- and
- a baffle positioned within the exhaust gas passage, the baffle including a plurality of guide channels with open cross-sections, each guide channel extending from a first end facing an inner surface of the exhaust duct to a second end opposite the first end, and wherein the guide channels guide exhaust gas from different regions of the cross-section toward the sensor tip.
Dependencies are inferred from the claim text.