Systems and methods for operating passive nitrogen oxide adsorbers in exhaust aftertreatment systems
US12366191B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 2024 |
| Grant date | Jul 22, 2025 |
| Priority date | — |
| Expiry date | Aug 13, 2044 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02C20/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A system includes a passive NOx adsorber (PNA) for receiving and treating exhaust gas generated by an engine and a controller. The controller is configured to: while exhaust gas is received by the PNA, detect a torque demand that is greater than a threshold value; responsive to detecting that the torque demand is greater than the threshold value, engage a motor, coupled with a battery system, with a drive shaft of the system to meet at least a portion of the torque demand; and in response to the engagement of the motor with the drive shaft not meeting all of the torque demand, engage the engine with the drive shaft to meet a remainder of the torque demand.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.