Method for detecting injection events in a piezoelectric actuated fuel injector
US6420817B1 · kind B1 · utility
21Cited by
11References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2000 |
| Grant date | Jul 16, 2002 |
| Priority date | — |
| Expiry date | Jul 11, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method is provided for detecting injection events in a piezoelectric actuated fuel injector. The method comprises the steps of: (a) providing a piezoelectric element for actuating the injector valve; (b) applying a voltage to the piezoelectric element, thereby actuating the injector valve; and (c) monitoring at least one of the voltage or current associated with the piezoelectric element, wherein changes in voltage or current are indicative of injection events in the fuel injector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.