Servo controlled common rail injector

Details Servo controlled common rail injector Servo controlled common rail injector

1999-02-09

2000-02-15

Weldon, Kevin

Fluid sprinkling, spraying, and diffusing

With system fluid relief or return to supply

Return from liquid pump outlet to supply holder

2395338, F02M 4702

Patent

active

060242981

ABSTRACT:
A fuel injector to inject fuel into a cylinder of an internal combustion engine when installed therein. The injector has an injector body which defines an interior cavity, a movable needle valve which cooperates with the interior body to define a variable-volume control chamber and a control valve for selectively blocking and permitting fluid communication among the control chamber, the high-pressure fuel supply, and the low-pressure fuel return. Such selectively controlled variation of the volume of the control chamber varies the position of the needle valve to selectively permit or prevent fluid communication between the high-pressure fuel supply and the engine cylinder. The control valve for selectively permitting fluid communication is preferably force balanced by relatively low forces acting thereon.

REFERENCES:
patent: 4566416 (1986-01-01), Berchtold
patent: 4566635 (1986-01-01), Trachte
patent: 4946106 (1990-08-01), Turchi et al.
patent: 4962887 (1990-10-01), Matsuoka

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