| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 239575000 | And filter, sifter or screen | 12 |
| 20090121049 | Internal lower fuel injector filter - An internal lower filter for a fuel injector includes a self-supporting guide guiding a reciprocably activated valve of an internal valve assembly of a fuel injector and a plurality of filter holes formed in said guide filtering fuel flowing through the fuel injector and preventing contaminants contained in the fuel from entering a sealing area of the internal valve assembly. Incorporating the guide filter in accordance with the invention in a fuel injector enables capturing particles or contaminants, generated within the fuel injector during assembly or during operation, before entering the sealing area of an internal valve assembly. Accordingly, failure modes of the injector, such as a stuck open condition that may lead to a hydraulic lock of the engine, can be reduced. By forming the filter holes in a typically used ball guide, no changes are required to the currently used assembly line equipment or the current assembly process. | 05-14-2009 |
| 20090236448 | Fuel injector lower filter - A lower filter for a fuel injector includes a disk having an annular shape and including a plurality of filter holes. The disk is positioned upstream of a valve guide of an internal valve assembly without contacting the valve guide. The disk prevents internally generated contaminants contained in fuel flowing through the filter holes from reaching a valve guide area and a sealing area of the internal valve assembly. By installing the lower filter upstream of the valve guide and without contact to the valve guide, interference with the guidance and reciprocal movement of the valve is avoided. Application of the lower filter in fuel injectors may reduce the occurrence of injector failures by reducing the number of stuck open conditions in injectors and by reducing the number of hydro lock engine incidents without interference with the valve guide. | 09-24-2009 |
| 20090256009 | Protection device for a lower guide system of a fuel injector - A protection device for a lower guide system of a fuel injector includes a debris shield deflecting a fuel flow around a lower guide system and a particle trap collecting particles contained within the fuel flow. By deflecting the fuel flow towards flow passages around the lower guide system, the particles contained in the fuel flow are prevented from entering a lower guide area, such as a radial gap between the stationary components of the lower guide system and the moving component of the valve assembly. The particle trap may be defined in a lower housing of the fuel injector or may be integrated in the debris shield. The debris shield may be integral with a valve assembly or may be a separate component. A permeable area may be integrated in the debris shield to enable partial flow therethrough. | 10-15-2009 |
| 20100213286 | ADJUSTING AND FILTER ARRANGEMENT FOR AN INJECTION VALVE AND INJECTION VALVE - The injection valve has a housing and a cavity with a fluid inlet portion and a fluid outlet portion, a valve needle axially movable in the cavity, the valve needle preventing a fluid flow in a closing position and releasing the fluid flow in further positions, and a spring element mechanically coupled to the needle and designed to exert an axial force on the needle. The adjusting and filter arrangement is arrangeable in the cavity between the inlet and outlet portion and has a filter element formed as a filtration body block and designed to filter the fluid, an adjusting element rigidly coupled to the housing and to preload the spring element and formed as an outer casing for the filter element, and a spring guiding element extending in axial direction and engaging the spring element, wherein the adjusting element and the spring guiding element form a one-piece element. | 08-26-2010 |
| 20110006136 | Lower Fuel Injector Filter - A lower fuel injector filter includes a generally planar disk having an annular shape and including a plurality of filter holes. The disk is retained by a valve guide within a valve seat. The disk prevents internally generated contamination particles contained in fuel flowing through the filter holes from reaching a valve and seat interface positioned downstream of the valve guide. The disk may also be retained by a ball valve stop proximate the valve seat. | 01-13-2011 |
| 20110011955 | PARALLEL CIRCUIT FUEL FILTRATION FOR FUEL INJECTORS - A fuel injector that comprises a parallel circuit fuel filtration circuit providing filtered fuel to the control valve. Specifically, a fuel filter is positioned inside the injector within the passage leading to the control valve. Debris is removed from the fuel and filtered fuel is allowed to pass through to the control valve. Unfiltered fuel may be purged from the fuel injector during injection. Alternatively, unfiltered fuel may be removed from the injector via the drain. | 01-20-2011 |
| 20120181357 | FILTRATION IRRIGATION METHOD, FILTRATION IRRIGATION DEVICE AND THE MANUFACTURING METHOD THEREOF - A filtration irrigation method, filtration irrigation device and the manufacturing method thereof, said filtration irrigation device comprises a water carrying chamber, in which one or more porous filter membranes are arranged. One or more flow restrictors corresponding to each membrane are set on the wall of the water carrying chamber. The total permeation capacity of the flow restrictors is less than that of said filter membranes. The present invention can avoid the blockage of the device effectively. | 07-19-2012 |
| 20140091161 | PISTON COOLING JET - A piston cooling jet includes a housing, a nozzle, a valve, a pressure chamber, a pressure adjusting passage, and a filter. The nozzle is provided to project outward from the housing, and capable of spraying oil toward a piston. The valve is capable of moving reciprocally inside the housing, and configured to receive a load due to a hydraulic pressure in an engine-side oil passage applied from a front side of the valve. The valve includes a valve-side oil passage that communicates with the engine-side oil passage. The pressure chamber communicates with the valve-side oil passage. The pressure adjusting passage is disposed between the pressure chamber and a space outside the housing. The filter is disposed in the valve, and configured to remove foreign matter that cannot pass through the pressure adjusting passage from oil passing through the valve-side oil passage. | 04-03-2014 |
| 20150008271 | Injector Orifice Plate Filter - A hoop filter is adapted to protect a pressure control orifice plate in a common rail fuel injector from being plugged by contaminated fuel. Shaped in the form of a band, the filter is configured to engage the circumference of a pressure control orifice plate. For purposes of filtration, the orifice plate has a circumferential groove which intersects at least one internal orifice; the groove is externally covered by the body of the hoop filter. In one embodiment, the band-shaped hoop filter has small apertures adapted to filter out any particle having a size greater than 50 microns. In another disclosed embodiment, the hoop filter is a solid band-shaped edge filter without any apertures; instead the orifice plate periphery includes circumferentially spaced vertical grooves which interface with the bottom and top edges of the filter to restrict entry of contaminant particles. | 01-08-2015 |
| 20150041565 | VALVE FOR METERING A FLOWING MEDIUM - A valve for metering a flowing medium, particularly a fluid, which has a filter situated in the medium stream and has a filter ring that includes a plurality of filter pores and a support element supporting the filter ring on its outgoing flow side. The support element is developed as a radially elastic support ring having a plurality of through holes, which rests against the filter ring with radial prestressing. | 02-12-2015 |
| 20150369176 | VALVE FOR METERING FLUID, THE VALVE CONTAINING A FILTER DEVICE - A valve for metering fluid includes: a flow channel, which leads from a fluid inlet to a metering opening for the fluid; and a filter device, which is situated in the flow channel, and through which the fluid flows. The filter device has a coarse filter and a fine filter which is situated downstream from the coarse filter in the flow direction of the fluid. | 12-24-2015 |
| 20220136473 | FILTRATION DEVICE FOR A COMMON RAIL FUEL INJECTOR - A filtration device may include a securement section and a filter. The securement section may be configured to be threadably secured to and extend within an interior of a common rail fuel injector. The securement section may include a passage for fuel. The passage may extend in a direction along a central axis of the securement section. The filter may be configured to be positioned within the interior of the common rail fuel injector to filter the fuel flowing through the common rail fuel injector. The filter may include a plurality of holes that are fluidly connecting to the passage of the securement section. The diameter of the filter may be smaller than a diameter of the securement section. | 05-05-2022 |
