Method for regulating an air/fuel ratio and method for recognizing a fuel quality
US8600646B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2009 |
| Grant date | Dec 3, 2013 |
| Priority date | — |
| Expiry date | Jul 25, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a method for regulating an air/fuel ratio, and in a method for recognizing a fuel quality, a lambda sensor is provided in the exhaust of the internal combustion engine, wherein after fueling of the tank the second adaption value is first adjusted due to a deviation of the lambda signal from the target signal occurring such that the lambda signal oscillates again about the target value, wherein the second adaption value is determined as a function of the current adaption value and as a function of the currently determined quality of the fuel. In a method for recognizing a fuel quality, particularly of a mixture ratio of two types of fuel, the lambda signal of the lambda sensor is analyzed for recognizing the quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.