Influence of engine parameters on condensation protection strategies
US7079938B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2003 |
| Grant date | Jul 18, 2006 |
| Priority date | — |
| Expiry date | May 21, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A control and method for an internal combustion engine that includes an exhaust gas recirculation system to predict an intake manifold critical temperature (dew point) at which condensation would occur upon entry into exhaust gas recirculation. The control calculates the intake manifold critical temperature (IMT_Critical) as a function of predetermined, sensed or assumed values by processing an equation whose variables are occupied by the values. The control commands adjustments of exhaust gas recirculation operation in response to the calculation, preferably after the actual intake manifold temperature exceeds the IMT_Critical for a predetermined time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.