Apparatus and method for controlling exhaust gas purification
US10934909B2 · kind B2 · utility
1Cited by
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13Claims
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Key dates
| Filing date | Nov 4, 2019 |
| Grant date | Mar 2, 2021 |
| Priority date | — |
| Expiry date | Nov 4, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An apparatus for controlling exhaust gas purification may include a front unit communicating with an engine exhaust pipe and having a first catalytic filter; a rear unit communicating with the front unit through a connection pipe and having a second catalytic filter and a bypass channel formed to surround the second catalytic filter; and an actuator to open or close the bypass channel. In particular, one end of the bypass channel is opened or closed and other end thereof is sealed so that the second catalytic filter is heated by a primary filtered exhaust gas filtered by and discharged from the front unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.