Siemens-bendix Automotive Electronics Limited

Siemens Automotive Corporation

Sims B Demere

Paul Desmond Daly

David P Wieczorek

Ross W Wood

John S Bright

Benjamin F Brinn, Jr

Richard D Weaver

Kenric J Johnson

Thomas E Hensley

John S Welc

A length of wire is toroidally wound, and then the toroid is encapsulated and cut in two along a plane that is perpendicular to the toroidal axis. The resulting portions are used as stator and/or armature of a solenoid, and in the solenoid the cut face of each forms one side of the solenoid's working gap so that the faces move toward and away from each other as the solenoid operates.

Filament magnetic flux circuit

The nozzle of a fuel injector is constructed to have a seat member and a single thin disc orifice member. A guide member affixed to the seat member guides the injector needle toward the seat in the seat member as the needle is reciprocated within the injector by pulsing the injector solenoid. Fuel is conveyed past the guide member by holes that are spaced radially outwardly from the central hole which guides the needle and that are skewed to the injector axis. As fuel passes through these skewed holes, it acquires angular momentum. The effect of this angular momentum is to increase the divergence of the column of fuel that is emitted by the single thin disc orifice member.

Thin orifice swirl injector nozzle

The amount of protrusion of an end of a standard length push pin from a stationary part of a solenoid-actuated valve is measured at a certain point in the valve fabrication process. Then before the armature is assembled into the valve, a depression whose depth is based on the push pin protrusion measurement is coined into the end of the armature that is to bear against the protruding end of the push pin. When the armature is assembled, the protruding end of the push pin seats in the depression that has been formed in the end of the armature with the result that the air gap between this end of the armature and the stationary part from which the push pin protrudes is the desired thickness. The process is well-suited for automated operation so that maximum production efficiencies can be attained.

Method for controlling solenoid de-energized air gap

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Newport News, VA, United States of America

Sims B Demere