Method and device for determining the temperature of the fuel in a fuel reservoir injection system
US7110875B2 · kind B2 · utility
3Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2004 |
| Grant date | Sep 19, 2006 |
| Priority date | — |
| Expiry date | Mar 17, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2250/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In fuel reservoir injection systems also known as common rail fuel-injection systems (1) for motor vehicles the problem exists that for a defined quantity of fuel that is about to be injected it is necessary to take into account not only the predominant pressure of the fuel but also its temperature. It is difficult to install and use a temperature sensor to detect the fuel temperature. The invention therefore proposes a method and a device for determining the temperature (T) from the pressure (P) measured by the pressure sensor (4) and the sound-propagation velocity (V) of a shock wave triggered at the moment of injection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.