EGR cooler condition module and associated system
US9500145B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2012 |
| Grant date | Nov 22, 2016 |
| Priority date | — |
| Expiry date | May 20, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M26/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An apparatus for determining a condition of an exhaust gas recirculation (EGR) cooler of an internal combustion engine includes a clean EGR cooler module that is configured to estimate the temperature of exhaust gas exiting a clean EGR cooler. The apparatus also includes a fouled EGR cooler module that is configured estimate the temperature of exhaust gas exiting a fouled EGR cooler. Further, the apparatus includes an EGR cooler effectiveness module that is configured to determine a normalized effectiveness of the EGR cooler based on the estimated temperature of exhaust gas exiting a clean EGR cooler and the estimated temperature of exhaust gas exiting a fouled EGR cooler. Additionally, the apparatus includes an EGR cooler condition module that is configured to determine a condition of the EGR cooler based on the normalized effectiveness of the EGR cooler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.