Method for quantifying oxygen stored in a vehicle emission control device
US6694244B2 · kind B2 · utility
33Cited by
156References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2001 |
| Grant date | Feb 17, 2004 |
| Priority date | — |
| Expiry date | Jul 18, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method and system are provided for determining a present value representative of the quantity of oxygen that is stored in an emission control device receiving exhaust gas generated by an internal combustion engine, as well as a present value for the maximum capacity of the device to store a selected constituent gas of the exhaust gas. The resulting values are advantageously used for adaption of predetermined values for controlling device fill and purge times when operating in an open-loop control mode, whereby open-loop device operation is optimized to reflect changes in device operating conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.