Fuel injector with direct shutter actuation for internal...

Details Fuel injector with direct shutter actuation for internal... Fuel injector with direct shutter actuation for internal...

2009-04-17

2011-11-22

Gorman, Darren W (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Including valve means in flow line

Reciprocating

C239S533900, C239S533110

Reexamination Certificate

active

08061632

ABSTRACT:
A fuel injector for internal combustion engines provided with a fuel feeding channel, the feeding channel having an axis and an injection outlet; an injection valve to control the outlet; an injection valve having a shutter arranged inside the feeding channel to define, within the feeding channel, a first fuel introduction section, the shutter being movable from and to a closing position along the feeding channel, which has a second section; and an annular sealing seat arranged on the feeding channel upstream of the outlet; an elastic member for normally keeping the shutter in the closing position; an actuator mechanism connected to the shutter to displace the shutter itself from the closing position and to an opening position of the outlet; and a hydraulic resistance that is provided along the feeding channel upstream of the annular sealing seat to balance the forces acting upon the shutter.

REFERENCES:
patent: 4651931 (1987-03-01), Hans et al.
patent: 3624476 (1986-07-01), None
patent: 10348928 (2005-05-01), None
patent: 1498601 (2005-01-01), None
patent: 04143455 (1992-05-01), None
patent: 04143455 EA (1992-05-01), None
patent: WO 02/48536 (2002-06-01), None
patent: WO 03/081022 (2003-10-01), None
patent: WO 03/081022 (2003-10-01), None
patent: WO 2006/063912 (2006-06-01), None
European Search Report mailed Oct. 14, 2008 in European Appln. No. 08425264.2-1263.

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