Multiple heater exhaust aftertreatment system architecture and methods of control thereof
US11339698B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 2020 |
| Grant date | May 24, 2022 |
| Priority date | — |
| Expiry date | May 27, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2610/03
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A system includes a first heater positioned in or proximate to an exhaust aftertreatment system in exhaust gas-receiving communication with an engine, a second heater positioned downstream of the first heater, and a controller coupled to the first and second heaters. The controller is structured to determine, based on information indicative of a temperature regarding the exhaust aftertreatment system, that the temperature is below a temperature threshold; receive information regarding a characteristic of a battery coupled to the first heater and the second heater; control the temperature regarding the exhaust aftertreatment system without using the first or second heaters in response to determining that the characteristic of the battery is below a first threshold; and control a temperature regarding the exhaust aftertreatment system using the first heater in response to determining that the characteristic of the battery is above the first threshold but below a second threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.