Control systems and methods for fuel and secondary air injection
US8280610B2 · kind B2 · utility
7Cited by
0References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 27, 2009 |
| Grant date | Oct 2, 2012 |
| Priority date | — |
| Expiry date | Aug 3, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An engine control system comprises an actuator control module and a tertiary injection module. The actuator control module provides secondary air to an exhaust system when a catalyst light-off mode is enabled and provides first and second injections of fuel to a cylinder during each engine cycle while the catalyst light-off mode is enabled. The tertiary injection module selectively provides a third injection of fuel to the cylinder during an exhaust phase of each engine cycle while the catalyst light-off mode is enabled. The first, second, and third injections are each separated by a period of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.