Three-way valve and fuel injection device having the same

Details Three-way valve and fuel injection device having the same Three-way valve and fuel injection device having the same

2007-06-26

2007-06-26

Nguyen, Dinh Q. (Department: 3752)

Fluid sprinkling, spraying, and diffusing

With means to vibrate or jiggle discharge

By electric transducer

C239S088000, C239S096000, C239S533200, C239S585100, C123S447000, C123S498000, C251S129060, C251S050000

Reexamination Certificate

active

10947439

ABSTRACT:
A three-way valve having a valve chamber with a low-pressure port, a high-pressure port, and a control port is provided. The three-way valve also has a control valve installed in the valve chamber for closing one of the low-pressure port and the high-pressure port. A guide hole communicates with the valve chamber via the high-pressure port. A guide portion is slidably installed in the guide hole and moves together with the control valve. The guide portion further receives a fuel pressure at the high-pressure port in a closing direction of the high-pressure port. The control valve is driven by a piezoelectric actuator to open the low-pressure port and close the high-pressure port. The valve chamber communicates with an oil-accumulating chamber via a by-pass conduit. The oil-accumulating chamber is defined within the guide hole and is located opposite the guide portion from the valve chamber.

REFERENCES:
patent: 6994272 (2006-02-01), Kurrle et al.
patent: 2003/0019960 (2003-01-01), Magel
patent: 19803910 (1998-11-01), None
patent: 10257140 (2003-06-01), None
patent: 0816670 (1998-01-01), None
patent: 2003-148277 (2003-05-01), None
patent: 2004-176656 (2004-06-01), None
patent: WO 00/23704 (2000-04-01), None
patent: WO 01/29395 (2001-04-01), None
patent: WO 03/044359 (2003-05-01), None
French Search Report—Dec. 19, 2005.

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