Method for determining a condition of an exhaust gas recirculation (EGR) system for an internal combustion engine
US6446498B1 · kind B1 · utility
16Cited by
13References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1999 |
| Grant date | Sep 10, 2002 |
| Priority date | — |
| Expiry date | Jun 30, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M2026/004
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method for determining a condition of an exhaust gas recirculation (EGR) system for an internal combustion engine. The method includes the steps of setting an EGR valve located on the EGR system to a first position, determining a first temperature value at a location on the EGR system, setting the EGR valve to a second position, determining a second temperature value at the location, and determining a condition of the EGR system as a function of the difference between the first and second temperature values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.