Fuel injection apparatus
US7828228B2 · kind B2 · utility
4Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2008 |
| Grant date | Nov 9, 2010 |
| Priority date | — |
| Expiry date | Jun 27, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M51/0603
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An inflection point sensing arrangement of an electronic drive unit, which drives a fuel injection valve, senses an inflection point in a pressure-changing process of the pressure in the control chamber. A charging and discharging condition changing arrangement of the electronic drive unit changes a charging condition for charging of the electric current to a piezoelectric actuator of the fuel injection valve or a discharging condition for discharging of the electric current from the piezoelectric actuator upon sensing of the inflection point, which is sensed with the inflection point sensing arrangement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.