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US Patent 4416423 - Electromagnetically actuatable valve, in particular a fuel injection valve for fuel injection systems

US Patent Issued on November 22, 1983
Estimated Patent Expiration Date: Icon_subject September 30, 2001Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
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Abstract

An electromagnetically actuatable valve is proposed, which serves in particular to inject fuel into the intake tube of internal combustion engines operating with fuel injection systems. The fuel injection valve includes a valve housing, a shell-type core having a magnetic coil, and a flat armature. The flat armature is firmly connected with a spherical valve element which passes through a central guide opening in a guide diaphragm and cooperates with a fixed valve seat. The guide diaphragm guides the valve element in the radial direction toward the valve seat. The flat armature contacts the guide diaphragm via a concentric shoulder providing tension thereto so that the armature is guided in a plane parallel to the end face of the shell core. The fuel supply to the valve is effected via radial inlet openings in the valve wall. The non-metered fuel, after flowing through the magnetic element, can flow into a fuel return flow line by way of radial outlet openings which are axially offset and sealed from the inlet openings.

Inventors

Assignee

Application

No. 06/307241 filed on 09/30/1981

US Classes:

239/585.3, Plate-type armature valve (e.g., plate and integral projection or ball)239/900ELECTROMAGNETICALLY ACTUATED FUEL INJECTOR HAVING BALL AND SEAT TYPE VALVE

Field of Search

239/285Flow controller and ground support interconnection

Examiners

Primary: Kashnikow, Andres
Assistant: Sobel, Paul A.

Attorney, Agent or Firm

US Patent References

2130666, 3001757, 3587970, 4033507, Fuel injection valve
Issued on: 07/05/1977
Inventor: Fromel ,   et al.
4196751, Electric to fluid signal valve unit
Issued on: 04/08/1980
Inventor: Fischer ,   et al.
4310123, Electromagnetic fuel injector with adjustable armature spring
Issued on: 01/12/1982
Inventor: TePastte
4356980, Electromagnetically actuatable valve
Issued on: 11/02/1982
Inventor: Krauss
4365747Electromagnetically actuatable fuel injection valve
Issued on: 12/28/1982
Inventor: Knapp ,   et al.

International Classes

F02M 51/06 (20060101)
F02M 51/08 (20060101)
F02M 63/00 (20060101)

Foreign Application Priority Data

1980-12-12 DE

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