Exhaust restriction device for improved sensor signal
US11746685B2 · kind B2 · utility
0Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2022 |
| Grant date | Sep 5, 2023 |
| Priority date | — |
| Expiry date | Jan 27, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D9/102
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An engine exhaust system includes a catalytic converter, an exhaust conduit connected upstream of the catalytic converter, and an oxygen sensor extending into the exhaust conduit at a first axial position of the exhaust conduit. A valve is located within the exhaust conduit at the first axial position. The valve includes a movable throttle plate having a bypass notch formed on a periphery of the plate. The valve has an open position, and a closed position in which the bypass notch is placed adjacent to the oxygen sensor to guide exhaust over the oxygen sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.