Method for forming a signal relating to the quantity of exhaust gas recirculated in an internal combustion engine
US5619974A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 1996 |
| Grant date | Apr 15, 1997 |
| Priority date | — |
| Expiry date | Jan 16, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method for forming a signal relating to the quantity of exhaust gas recirculated in an internal combustion engine. The signal for the quantity of recirculated exhaust gas is formed on the basis of a signal for the stream of fresh gas fed to the internal combustion engine and a signal for the entirety of the stream of gas fed to the internal combustion engine. The signal for the entirety of the stream of gas which is fed is formed from a series of characteristic operating variables. These characteristic operating variables include, inter alia, the pressure in the intake tract, which can either be detected by means of a sensor or be formed from standby signals. The signal for the quantity of recirculated exhaust gas can be provided with a dynamic correction signal. Furthermore, the signal for the quantity of recirculated exhaust gas can be used in an exhaust gas recirculation valve with position reporting facility to identify an adaptive correction signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.