Abstract: A solenoid valve assembly in which the solenoid and valve are axially fitted together. The solenoid comprises a cylindrical housing having an axial slot running along its entire length to allow the housing to be resiliently circumferentially expanded. The valve body has a cylindrical axial surface over which an axial end portion of the housing is fitted. Just beyond this cylindrical axial surface is a narrow groove. The cylindrical housing of the solenoid is provided with preformed stakes in its end edge which fit into this narrow groove to retain the solenoid end valve together in assembly. The invention is particularly advantageous where there is a limited axial length for the cylindrical housing of the solenoid to fit onto the valve body. The invention provides adequate retention in assembly, a sufficient area for magnetic flux that passes between the solenoid housing and the valve body, and the ability to easily disassemble the solenoid from the valve when such disassembly is desired.

Abstract: A method for controlling fuel injector lift control provides accurate lift dimensions over the life of the injector 10. The method can be implemented by sophisticated equipment for more automated operation but the steps of measuring and determining the spacing between the pole piece 18 and the armature member 26 and forming a spacer 12 as a result of such measurements, substantially follow the concept of differential gaging 36 and stepper motor 52 controlled press 38. Once a spacer 12 is sized, it is mated with the housing member 14 and the valve body assembly 24 and held in place by unitizing the injector 10.

Abstract: A bottom feed fuel injector as used in single point fuel injection systems is fabricated from sintered iron or powdered metal. This reduces secondary machining operations and therefore reduces cost of injectors. Additionally, static adjustments are capable of being made from the end of the injector opposite the discharge end. A top feed injector is described wherein several of its critical elements are molded from sintered iron or powdered metal.