Fuel injection valve

Details Fuel injection valve Fuel injection valve

2005-03-22

2005-03-22

Kim, Christopher (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Fluid pressure responsive discharge modifier* or flow...

Resilient or deformable terminal outlet

C239S585500

Reexamination Certificate

active

06869032

ABSTRACT:
A fuel injector, in particular for a high-pressure injector for direct injection of fuel into a combustion chamber of an internal combustion engine, has compression of a fuel/air mixture with spark ignition. On the downstream end of the valve a valve seat element is provided, to which a perforated disk acting as a flow restrictor is connected downstream. A swirl element is situated upstream from the valve seat which imparts an atomization-promoting rotational motion to the fuel to be injected. In the valve seat element downstream from the valve seat, an elongated outlet orifice is provided which opens directly into an orifice in the perforated disk attached to the valve seat element. The width of the outlet orifice is greater than the width of the orifice in the perforated disk, at least at its narrowest location, so that it is possible to adjust the steady-state flow rate of the valve at the orifice.

REFERENCES:
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patent: 6079642 (2000-06-01), Maier
patent: 6273349 (2001-08-01), Fischbach et al.
patent: 3943005 (1990-07-01), None
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patent: 350885 (1990-01-01), None
patent: 2773852 (1999-07-01), None
patent: 11062787 (1999-06-01), None
patent: WO 99/53191 (1999-10-01), None

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