Bottom feed injector with top calibration feed

Details Bottom feed injector with top calibration feed Bottom feed injector with top calibration feed

1995-05-19

1996-11-26

Weldon, Kevin

Fluid sprinkling, spraying, and diffusing

Processes

2395854, F02M 5106

Patent

active

055776639

ABSTRACT:
A bottom feed engine fuel injector is provided with a valve spring calibration adjuster such as an adjusting tube, which permits fuel flow from the top of the injector during manufacturing calibration and run in. The upper end of the injector is capped in the last manufacturing step after calibration to prevent fuel passage through this opening in normal engine use where bottom fuel feed is used in conventional fashion. Several exemplary adjusters and top feed closing embodiments are illustrated and described. The modified injector structure and manufacturing process reduces costs by allowing both top and bottom feed injectors to be assembled and calibrated on the same manufacturing equipment.

REFERENCES:
patent: 5156341 (1992-10-01), Terakado et al.
patent: 5158236 (1992-10-01), Sugiyang et al.
patent: 5185297 (1993-02-01), Asano
patent: 5275341 (1994-01-01), Romann et al.
patent: 5330153 (1994-07-01), Reifer
patent: 5348233 (1994-09-01), Press et al.

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