Process and device for controlling cylinder selective filling in a combustion engine having a variable operation
US6666197B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 18, 2001 |
| Grant date | Dec 23, 2003 |
| Priority date | — |
| Expiry date | Apr 16, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A process and a device for controlling selective cylinder filling in combustion engines with a variable valve drive, where the valve stroke and/or the valve opening and closing times of the cylinder intake valves are controllable. In order to ensure satisfactory idling quality also in direct fuel-injection engines in spite of the occurring production tolerances, at least one input magnitude is determined on whose basis conclusions can be drawn as to the filling level or filling level differences of each cylinder. From this input magnitude, a control signal for the variable valve operation is determined such that differing filling levels of the cylinder can be balanced out by adjusting the valve drive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.