Method and device for ascertaining one or more starts of combustion in a cylinder of an internal combustion engine from a provided cylinder-pressure curve
US7870846B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 2009 |
| Grant date | Jan 18, 2011 |
| Priority date | — |
| Expiry date | Jul 22, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/403
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method for determining a point in time of a start of combustion in a cylinder of an internal combustion engine includes: providing a base compression pressure model which gives a curve of a compression pressure in the cylinder as a function of the operating point; adjusting the base compression pressure model using measured cylinder pressures of at least one operating state of the internal combustion engine at points in time at which no combustion is taking place in the cylinder, in order to obtain an adjusted compression pressure model; and determining a point in time of a start of combustion with the aid of a pressure curve determined by the adjusted compression pressure model.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.