Fuel injection valve
US6510841B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 1, 2001 |
| Grant date | Jan 28, 2003 |
| Priority date | — |
| Expiry date | Jun 1, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M51/0671
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injector (1) for fuel injection systems of internal combustion engines is specially designed for the direct injection of fuel into the combustion chamber of an internal combustion engine. It is provided with a solenoid coil (10), a two-part armature (20a, 20b) that is acted upon through the solenoid coil (10) in a closing direction by a first resetting spring (23a), and a valve needle (3) that is connected to the larger armature part (20a) in a force-locking manner, for actuating a valve-closure member (4) which together with a valve seat surface (6) forms a sealing seat. The first armature part (20a) is acted upon in the closing direction by the first resetting spring (23a), and the second armature part (20b) is acted upon in the closing direction by the second resetting spring (23b), the spring constants of the resetting springs (23a, 23b) being different.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.