Exhaust system having pressure sensing system with plugging-mitigation conduit forming always-open leakage path
US11131224B1 · kind B1 · utility
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18Claims
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Key dates
| Filing date | Apr 21, 2020 |
| Grant date | Sep 28, 2021 |
| Priority date | — |
| Expiry date | Apr 21, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An exhaust system includes an exhaust pressure sensing system having sensor conduits structured to fluidly connect to an exhaust conduit in an exhaust system and feed exhaust to a differential pressure sensor. The differential pressure sensor produces a pressure signal indicative of a pressure drop across an exhaust aftertreatment element such as an exhaust filter. A plugging-mitigation conduit provides an always-open leakage path to convey condensate in a stream of leaked exhaust between the sensor conduits to prevent formation of deposits that can impact pressure sensing accuracy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.