Method and device for correlating cylinder charge and maximum intake valve lift of internal combustion engine
US8573180B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 17, 2012 |
| Grant date | Nov 5, 2013 |
| Priority date | — |
| Expiry date | Dec 17, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method for determining a cylinder charge of an internal-combustion engine having valves with a variable valve gear, may include determining a maximum intake valve lift, calculating a standardized cylinder charge relative to at least one of a defined intake spread of an intake valve opening phase and a defined exhaust spread of an exhaust valve opening phase, as a function of the maximum intake valve lift, determining an overlap value, which characterizes an actual overlap of the intake valve opening phase and the exhaust valve opening phase, and determining a corrected cylinder charge based on the standardized cylinder charge and the overlap value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.