Patents
US 12768311 B2: Systems and methods for migitating cold start emissions in a vehicle including a catalyst heater via rotation of a turbocharger turbine
- Granted
- 2026-10-20
- Filed
- 2024-10-02 application 18904961
- Type
- Utility · 17 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Control signals are issued to open a wastegate, rotate a turbine, and turn on a catalyst heater disposed between the turbine and a catalyst in response to a trigger signal. The rotation of the turbine causes recirculated air flow in a recirculation flow path including an exhaust manifold, exhaust walls between the exhaust manifold and the turbine, a turbine housing, exhaust walls between the turbine and the wastegate, exhaust walls between the wastegate and the exhaust manifold, and exhaust walls between the turbine and the catalyst heater. Heat is transferred from the recirculated air heated by the catalyst heater to the exhaust manifold, the exhaust walls between the exhaust manifold and the turbine, the turbine housing, the exhaust walls between the turbine and the wastegate, the exhaust walls between the wastegate and the exhaust manifold, and the exhaust walls between the turbine and the catalyst heater.
Source: PTBLXML, file of 2026-10-20 (ipgb20261020.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| GM GLOBAL TECHNOLOGY OPERATIONS LLC 19,536 patents | US company or organization | Detroit, MI | PTBLXML, file of 2026-10-20 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Azeem Sarwar | Rochester Hills, MI | 27 | PTBLXML, file of 2026-10-20 | |
| Mark Claywell | Birmingham, MI | PTBLXML, file of 2026-10-20 | ||
| Maqsood Rizwan Ali Khan | Troy, MI | PTBLXML, file of 2026-10-20 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| F02D | Controlling combustion engines | F02D41/064 | PTBLXML, file of 2026-10-20 |
| F01N | Gas-flow silencers or exhaust apparatus for machines or engines in general; gas-flow silencers or exhaust apparatus for internal-combustion engines | F01N3/2006 | PTBLXML, file of 2026-10-20 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
No recorded assignments or security interests on file for this patent.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.