One dimensional three way catalyst model for control and diagnostics
US9790878B2 · kind B2 · utility
11Cited by
2References
18Claims
0Family size
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Key dates
| Filing date | Jan 17, 2014 |
| Grant date | Oct 17, 2017 |
| Priority date | — |
| Expiry date | Mar 26, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method comprising adjusting a fuel injection amount based on a fractional oxidation state of a catalyst, the fractional oxidation state based on reaction rates of grouped oxidant and reductant exhaust gas species throughout a catalyst and a low-dimensional physics-based model derived from a detailed two-dimensional model to obtain a one-dimensional model averaged over time and space that accounts for diffusion limitations in the washcoat and accurately predicts emissions during cold start.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.