Method for the production of a magnetic circuit for a valve

In the case of already known electromagnetically actuable fuel- injection valves, a connecting ring consisting of a nonmagnetic material is incorporated in a leakproof and fixed manner between an internal pole and a valve enclosure constructed separately therefrom. The production of the highly preci...

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Bibliographic Details
Main Author STIEGLITZ, PETER, 96094 BAMBERG, DE
Format Patent
LanguageEnglish
German
Published 06.10.1994
Edition5
Subjects
BASIC ELECTRIC ELEMENTS
BLASTING
COMBUSTION ENGINES
ELECTRICITY
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
INDUCTANCES
LIGHTING
MAGNETS
MECHANICAL ENGINEERING
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF
TRANSFORMERS
WEAPONS
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Summary:In the case of already known electromagnetically actuable fuel- injection valves, a connecting ring consisting of a nonmagnetic material is incorporated in a leakproof and fixed manner between an internal pole and a valve enclosure constructed separately therefrom. The production of the highly precise individual components and the fixing of the components through to the production of the leakproof and fixed connections by, for example, soldering are complicated and cost-intensive methods. The novel method for the production of a magnetic circuit for a valve represents a particularly cost-effective variant. In this case, the one-part magnetic body is constructed in such a way that an inner internal pole (1) and an outer valve enclosure (8) are connected by means of a base (69), while outside the base (69) an axially extending annular opening (70) radially separates the internal pole (1) and the valve enclosure (8). A soldering body (72) and a nonmagnetic intermediate ring (10) are introduced into the annular opening (70). Soldering then takes place, while only thereafter is the spatial separation of internal pole (1) and valve enclosure (8) undertaken by removal of material. The fuel-injection valve is particularly suitable for fuel-injection systems of mixture-compressing, spark-ignition (external-ignition) internal combustion engines.
Bibliography:Application Number: DE19934310719