EMG temp signal model based on EGRC out temp for EGR system anti-fouling protection
US8267069B2 · kind B2 · utility
20Cited by
18References
6Claims
0Family size
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Key dates
| Filing date | Aug 25, 2009 |
| Grant date | Sep 18, 2012 |
| Priority date | — |
| Expiry date | Nov 12, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An EGR control method to prevent condensation within the EGR system uses a temperature sensor signal from an EGR cooler exhaust gas outlet to model or estimate exhaust manifold gas temperature upstream of the cooler. If the estimated exhaust manifold gas temperature falls below a predetermined level, the engine control system closes or partially closes the EGR control valve to stop EGR flow through the cooler and the EGR valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.