Fuel injection device for internal combustion engines
US5975428A · kind A · utility
21Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1998 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | Feb 17, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M63/0036
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injection device for internal combustion engines in which a fuel injection valve has a tappet which is actuated by an injection valve member and defines a control chamber that is supplied continuously with high fuel pressure via a throttle and can be relieved via a control valve and an outflow conduit. To that end, the control valve has a valve member, which is actuated by a piezoelectric element in such a way that the valve member is moved toward the control chamber when the outflow conduit opens. In the closing position, the valve member is urged in the closing direction by the pressure in the control chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.