Exhaust sampler
AssigneeCummins Emission Solutions Inc.
InventorsTushar Sudam Udhane, Atul N Bamane, Randolph G Zoran
Life of this patent
Estimating the term…
Abstract
An exhaust sampler includes a sensor assembly enclosure. A portion of the exhaust sampler is coupled to an exhaust conduit in an exhaust aftertreatment system. A sensor is coupled to the exhaust conduit and configured to monitor a level of at least one constituent in exhaust. The exhaust sampler is positioned around the sensor. The sensor protrudes through the sensor assembly enclosure. The exhaust sampler is configured to receive a portion of exhaust in the exhaust conduit through an inlet, route the portion of exhaust to the sensor for sampling, and route the portion of exhaust back into the exhaust conduit through an outlet.
Claims20
An exhaust sampler comprising:
- a sensor assembly enclosure comprising:
- an enclosure body,
- an enclosure inlet extending through the enclosure body, and
- an enclosure outlet extending through the enclosure body, the enclosure outlet having an outlet area;
- a collector comprising:
- a collector body having a collector upstream end, and a collector downstream end opposite the collector upstream end, the collector body comprising a collector wall extending from the collector upstream end to the collector downstream end,
- a collector inlet defined by the collector body at the collector upstream end, and
- a collector outlet extending through the collector wall;
- and
- a transfer tube comprising:
- a transfer tube body having a tube inlet end, and a tube outlet end opposite the tube inlet end, the transfer tube body comprising a tube wall extending from the tube inlet end to the tube outlet end, the tube wall coupled to the collector wall around the collector outlet and to the enclosure body around the enclosure inlet,
- a tube inlet defined by the tube wall at the tube inlet end, the tube inlet having an inlet area between 105% and 200% of the outlet area, inclusive, and
- a tube outlet defined by the tube wall at the tube outlet end.
An exhaust sampler comprising:
- a sensor assembly enclosure comprising:
- an upstream portion,
- a downstream portion,
- an enclosure wall extending between the upstream portion and the downstream portion, and
- an endcap extending between the upstream portion, the downstream portion, and the enclosure wall, the endcap cooperating with the upstream portion, the downstream portion, and the enclosure wall to define a sampler cavity;
- an inlet extending through the upstream portion, the inlet having an inlet area;
- an outlet extending through the downstream portion, the outlet having an outlet area, the outlet area being between 20% and 40% of the inlet area, inclusive;
- and
- a baffle plate assembly disposed in the sampler cavity, the baffle plate assembly comprising a baffle plate coupled to the endcap and extending between the upstream portion and the downstream portion away from the endcap in a first direction orthogonal to the endcap, the baffle plate having a plate height in the first direction;
- wherein the outlet has an outlet height in the first direction;
- and
- wherein the plate height is greater than the outlet height.
Dependencies are inferred from the claim text.