Deposit control in fuel injector nozzles

Fluid sprinkling – spraying – and diffusing – Fluid pressure responsive discharge modifier* or flow... – Fuel injector or burner

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C239S533200, C239S533300

Reexamination Certificate

active

06923387

ABSTRACT:
An injector nozzle for a fuel injected internal combustion engine, said injector nozzle including a port (5) having a valve seat surface (15) and a valve member (3) having a seating surface (17), said valve member (3) being movable relative to the port (5) to respectively provide a nozzle passage (6) between the valve seat surface (15) and the seating surface (15) for the delivery of fuel therethrough or sealed contact therebetween to prevent said delivery of fuel, the valve member (3) including an outer valve surface (18) located adjacent the seating surface and external to the port, wherein a sharp edge (25) is provided on the valve member (3) at the transition between the seating surface (17) and the outer valve surface (18) thereby for controlling the formation of deposits at or adjacent an exit of the nozzle passage (6).

REFERENCES:
patent: 2035203 (1936-03-01), Smith
patent: 4815706 (1989-03-01), Feuling
patent: 4905908 (1990-03-01), Sczomak
patent: 4982708 (1991-01-01), Stutzenberger
patent: 5522550 (1996-06-01), Potz et al.
patent: 5551638 (1996-09-01), Caley
patent: 5685492 (1997-11-01), Davis et al.
patent: 5826801 (1998-10-01), Kobayashi et al.
patent: 5839411 (1998-11-01), Schoell
patent: 5988532 (1999-11-01), Alt et al.
patent: WO 91/11609 (1991-08-01), None
patent: WO 98/07980 (1998-02-01), None
JP 08338343A (ZEXEL KK) Dec. 24, 1996 Figures 1 and 2 Nozzle valve assembly for IC engine such as diesel engine—in which depth of notch has sharp inclination at one side relative to other side so that length of outer edge hole is more than that of inner side.
Derwent Abstract Accession No. 97-007881/01, JP 08277765-A (ZEXEL KK) Oct. 22, 1996 Abstract and Figure Nozzle valve assembly—sets tilt angle of injection hole to axial line of valve more than tilt angel of valve seat to coaxial line of valve during max. lift of valve.
Derwent Abstract Accession No. 97-405662/38, JP 09177638-A (ZEXEL KK) Jul. 11, 1997 Abstract and Figure; Nozzle valve assembly for IC engine esp. Diesel engines—has annual groove whose lower and edge is positioned downards to injection hole.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Deposit control in fuel injector nozzles does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Deposit control in fuel injector nozzles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Deposit control in fuel injector nozzles will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3505801

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.