Delphi Technologies, Inc.

John Henry Delaney

Joseph George Spakowski

Charles Wilson Braun

Robert B Perry

Jay Keith Sofianek

Gail E Geiger

Daniel L Varble

David Wesley Rogers

Noreen Louise Mastro

Kevin J Allen

An anti-rotation clip for joining a fuel injector body to a fuel rail socket. A C-shaped base is formed to slide into an annular groove in the injector body. A pair of tangs extend from the base to straddle a rib on the injector body to prevent rotation between the clip and the injector. Opposed sidewalls extending from the base include windows for receiving a radial flange of the fuel rail socket to correctly position the fuel injector axially within the socket. Each window is divided by a locking bar for reception in a notch in the socket flange to prevent rotation between the clip and the socket. The radial positions of the injector rib and flange notch are selected such that the injector will be properly oriented with respect to the engine after installation therein.

Anti-rotation fuel injector clip

A dual-coil outwardly-opening fuel injector including a fuel tube connected at a lower end to a lower injector housing. Within the fuel tube are a lower (opening) solenoid pole piece, a specially-formed armature, and an upper (closing) solenoid pole piece. A seat assembly including an injector nozzle, swirler, and valve seat are adjustably threaded into the lower housing. A pintle assembly, including a solid pintle portion supporting a valve head and a tubular portion welded thereto, is axially disposed within the fuel tube and is welded to the armature which is spaced from the lower pole piece by a distance equal to the opening stroke of the valve. A return spring adjustment mechanism disposed on the upper pole piece engages the upper end of the pintle assembly for varying the closing force of the return spring. Opening and closing solenoid preassemblies are mounted external to the fuel tube for magnetically engaging the pole pieces and armature within in known fashion.

Dual-coil outwardly-opening fuel injector

An actuator ( ) for a fuel injector having a dual coil solenoid. The solenoid coils ( ) are connected in parallel and have windings that are wound in opposite directions. The actuator ( ) of the present invention defines three air gap surfaces ( ), one of which ( ) is located in the space shared between the two coils ( ). The shared air gap surface ( ) has a high flux density due to the additive nature of the magnetic forces between the oppositely wound coils ( ). The dual-coil solenoid of the actuator ( ) of the present invention creates a very high force and a low inductive load which results in fast injector response times.

Dual coil solenoid for a gas direct injection fuel injector

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Scottsville, NY, United States of America

John Henry Delaney