Method for monitoring the condition of a piezo injector of a fuel injection system
US9587610B2 · kind B2 · utility
0Cited by
5References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 5, 2011 |
| Grant date | Mar 7, 2017 |
| Priority date | — |
| Expiry date | Jan 17, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/221
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method for monitoring the condition of a piezoinjector of a fuel injection system is disclosed. The fuel injection is carried out in injection cycles, each of which comprises a filling phase, a holding phase, and an emptying phase. The discharge resistance is ascertained during the holding phase of the piezoinjector. Conclusions about the working order of the piezoinjector are drawn using the ascertained discharge resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.