Electromagnetic actuated exhaust gas recirculation valve
US5901690A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1997 |
| Grant date | May 11, 1999 |
| Priority date | — |
| Expiry date | Sep 3, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M26/68
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An automotive emission control valve including a body having an internal main flow passage between a first port and a second port, a valve seat circumscribing a transverse cross-sectional area of the passage, a valve member including a non-flow-through valve head, an electromagnetic actuator providing a magnetic circuit path that includes an armature for operating the valve member to selectively seat and unseat the valve head on and from the valve seat. The armature comprising a unitary ferromagnetic member having an axial end which contains a walled hole that extends interiorly of the ferromagnetic member and ends at a surface of a transverse wall of the ferromagnetic member. The valve member including a valve stem having a free distal end. The valve further including a locator which is joined to the free distal end of the valve stem. The locator bearing against the surface of the transverse wall.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.