Fuel injector swirl nozzle assembly

Details Fuel injector swirl nozzle assembly Fuel injector swirl nozzle assembly

2002-01-31

2004-08-31

Hwu, Davis (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Flow deflecting or rotation controlling means

Fluid rotation inducing means upstream of outlet

C239S468000, C239S494000, C239S497000, C239S533140, C239S088000

Reexamination Certificate

active

06783085

ABSTRACT:

TECHNICAL FIELD
The present invention generally relates to a fuel injector nozzle for providing fine atomization of fuel expelled into an internal combustion engine. More specifically, the present invention relates to an improved swirl type injector nozzle assembly.
BACKGROUND
Stringent emission standards for internal combustion engines suggest the use of advanced fuel metering techniques that provide extremely small fuel droplets. The fine atomization of the fuel not only improves emission quality of the exhaust, but also improves the cold start capabilities, fuel consumption, and performance. One way of creating a fine spray of fuel is to use a swirl nozzle that injects the fuel from the nozzle and keeps the fuel moving in a swirling motion as the fuel exits the orifices within the nozzle. Current swirl nozzles incorporate cylindrical orifices within the nozzle, which suppress the swirling motion of the fuel as the fuel passes through the orifices. Therefore, there is a need in the industry for a fuel injector nozzle that will induce a swirling motion into the fuel flow prior to entering the orifices and the orifices will enhance the swirling motion of the fuel to provide fine atomization of the fuel that is injected into the cylinder.


REFERENCES:
patent: 4018387 (1977-04-01), Erb et al.
patent: 4389986 (1983-06-01), Tanasawa
patent: 4643359 (1987-02-01), Casey
patent: 4907748 (1990-03-01), Gardner et al.
patent: 4945877 (1990-08-01), Ziegler et al.
patent: 5058548 (1991-10-01), Morikawa et al.
patent: 5237975 (1993-08-01), Betki et al.
patent: 5335635 (1994-08-01), Kadoi et al.
patent: 5383597 (1995-01-01), Sooriakumar et al.
patent: 5398655 (1995-03-01), Tuckey
patent: 5449114 (1995-09-01), Wells et al.
patent: 5570841 (1996-11-01), Pace et al.
patent: 5673670 (1997-10-01), Powell et al.
patent: 5740967 (1998-04-01), Simmons et al.
patent: 5762272 (1998-06-01), Tani et al.
patent: 5911366 (1999-06-01), Maier et al.
patent: 5941207 (1999-08-01), Anderson et al.
patent: 6065692 (2000-05-01), Brinn, Jr.
patent: 6142390 (2000-11-01), Nordstrom et al.
patent: 6179227 (2001-01-01), Ren et al.
patent: 6227164 (2001-05-01), Miller
patent: 1 186 774 (2002-03-01), None
patent: WO 95/04881 (1995-02-01), None
English Abstract of Japanese Patent JP7035001, (Feb. 2, 1995).

Affiliated with

Also associated with

Rating

Fuel injector swirl nozzle assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fuel injector swirl nozzle assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fuel injector swirl nozzle assembly will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3360366