Method for monitoring an electromotively driven fuel pump and fuel feed unit having a fuel pump
US9127611B2 · kind B2 · utility
3Cited by
2References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 23, 2012 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | Jul 3, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23N2231/20
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
During monitoring of an electromotively driven fuel pump of a fuel feed unit for a motor vehicle, a pump current is monitored as a function of a pump voltage or of a pump rotational speed. Through a comparison of the pump current with the pump voltage or the pump rotational speed, it is detected whether leakage or dry running of the fuel pump is present. The fuel feed unit does not require any pressure sensor for this purpose, and is therefore of particularly simple construction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.