Method for operating a fuel injection device, especially for a motor vehicle
US7258109B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 22, 2005 |
| Grant date | Aug 21, 2007 |
| Priority date | — |
| Expiry date | Jul 22, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2041/2058
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method for operating a fuel injection device, particularly of a motor vehicle. The fuel injection device is provided with an injection valve which has a piezoelectric element. In using the method, the piezoelectric element is activated in such a way that the injection valve goes over into an opened state. During the activation, an electrical voltage is ascertained and/or prespecified at the piezoelectric element and/or an electrical current is ascertained and/or specified via the piezoelectric element. From the path of the voltage and/or from the path of the current one may infer the point in time of opening of the injection valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.