Electromagnetic hydraulic valve, in particular a 3/2-way directional control valve, for controlling a variable drive train of an internal combustion engine
US7243680B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2006 |
| Grant date | Jul 17, 2007 |
| Priority date | — |
| Expiry date | Jun 16, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87217
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a hydraulic valve (1), which comprises an electromagnet (2) with a magnet armature (3) as well as the valve part (4) with at least two valve seats (5, 6). The electromagnet (2) is formed by a hollow-cylindrical plastic coil former (8), a coil winding (10) which is accommodated in the latter and a magnet housing (11) which encloses the coil winding (10), the hollow cylinder of the coil former (8) being formed as an armature space (14) of the magnet armature (3), into which an upper magnet pole (15) and a lower magnet pole (16) protrude. The valve part (4) is formed by a hollow-cylindrical valve housing (18), which has a pressure connection (P) at the end as well as a consumer connection (A) and a tank connection (T), respectively arranged in its lateral surface (19), in the hollow cylinder of which housing two cup-shaped deep-drawn parts (23, 24) with the valve seats (5, 6) are pressed. The hydraulic valve (1) can be inserted into a complementary valve receptacle by the valve part (4) and has a fastening flange (26), by means of which it can be screwed on the valve receptacle in a manner sealing the pressure medium.According to the invention, at least the ma…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.