Method of controlling the burnt gas fraction in an engine cylinder with EGR and IGR
US9422875B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2012 |
| Grant date | Aug 23, 2016 |
| Priority date | — |
| Expiry date | Apr 23, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method of controlling an internal-combustion engine (1) equipped with an exhaust gas recirculation circuit and with variable timing means, having a first actuator (8) and of a second actuator (9). The method comprises acquiring a torque setpoint for the engine Tqsp determining a position setpoint for the first actuator (8) VVTint and a position setpoint for the second actuator (9) VVTexh by using a burnt gas flow model (MEGB) that relates the position setpoints of the actuators to the engine torque setpoint Tqsp . The burnt gas flow model (MEGB) comprises a cylinder filling model (MR), the burnt gas fraction in the cylinder is controlled by applying position setpoints VVTint and VVTexh to the variable timing means (8 and 9).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.