A fluid filtration assembly (FFA) includes a housing having a thickness defined between an internal surface and an external surface, the housing receiving a filter and defining an outer annular flow passage between an outer surface of the filter and the internal surface of the housing; an inlet pipe communicates with the FFA and injects a fluid into the housing to impart a centrifugal force; an outlet pipe communicates with the FFA and discharges the fluid from the housing; and a collection area disposed towards an end of the outer annular flow passage collects particulate matter from the fluid; wherein a width of the outer annular flow passage increases towards the collection area.

A filtration assembly for removing solid particulate matter and contaminants from motor oil including, without limitation, motor oil used in internal combustion engines. A housing having a removable cap defines an inner chamber. Stacked sheets of filter materials, interspersed between pressure plates, are installed within the chamber. Pressurized fluid is introduced into the inner chamber; the fluid pressure acts on the pressure plates and compresses the filter materials. As the pressurized fluid passes through the filter materials, solids and particulate matter are filtered from the fluid stream by the filter materials.

An oil supply system for an internal combustion engine, comprising a lubricating oil circuit in which a first oil pressure generating device, a first device for oil temperature control, and a second device for oil temperature control are provided, wherein the two devices for oil temperature control are arranged in two arms of the lubricating oil circuit connected in parallel and wherein the first oil pressure generating device is arranged in the flow direction upstream of the branch to the two arms leading to the two devices for oil temperature control.

An oil filtering system comprises: a first inlet, a first outlet, and a first oil filter; a first bypass conduit interconnecting the first inlet to the first outlet; a first valve in the first bypass conduit, the first inlet fluidly connected to the first outlet at least via the first bypass conduit in an opened configuration of the first valve, and via the first oil filter in a closed configuration; a second inlet, a second outlet, and a second oil filter; a second bypass conduit between the first inlet and the second outlet; a second valve disposed in the second bypass conduit, the second outlet fluidly connected to the first inlet via the second bypass conduit in an open configuration of the second valve, and via the second oil filter in the closed configuration thereof.

A filter insert for being removably arranged in a filter housing defines a first end and a second end opposite the first end, including a closing arrangement at the first end of the filter insert for controlling opening and closing, respectively, of an aperture, and an actuation arrangement operatively connected to the closing arrangement for actuating the closing arrangement, wherein the actuation arrangement is positioned at the second end of the filter insert and wherein the actuation arrangement is accessible for external contact at the second end of the filter insert.

A filter insert for being removably arranged in a filter housing includes a first connection arrangement for engaging a corresponding second connection arrangement of a filter housing lid for a connection to the filter housing lid. The first connection arrangement is arranged to simultaneously prevent a relative rotational movement between the filter insert and the filter housing lid and allow a relative axial movement between the filter insert and the filter housing lid.

A combined oil filter and restrictor assembly is disclosed having an oil flow restrictor interposed between first and second filters so that, irrespective of the direction of oil flow through the restrictor, debris cannot enter a small diameter bore 32 in a body of the restrictor thereby reducing the likelihood of restrictor blockage. The combined oil filter and restrictor assembly includes a metal threaded member that enables the combined oil filter and restrictor assembly to be easily and quickly assembled to or removed from a component such as a cylinder head of a variable displacement engine. The combined oil filter and restrictor assembly can be used to provide a restricted flow of oil from oil supply passages to signal oil passages used for controlling the operation of deactivatable hydraulic lash adjusters so as to purge the signal oil passages when the deactivatable hydraulic lash adjusters are not deactivated.

An apparatus facilitates multiple paths or circuits through an engine and remote housing for an oil filter. The apparatus includes a first oil filter chamber housing a first oil filter, a second oil filter chamber housing a second oil filter, a first output of the remote housing configured to provide a path from the first oil filter chamber housing to bearings of an engine, a second output of the remote housing configured to provide a path from the second oil filter chamber housing to a sump of the engine, and an input of the remote housing configured to provide a path from an oil pump of the engine to the first oil filter chamber housing.

An oil filtration system includes an oil chamber inlet. Also included is a first screen defining a first chamber volume that receives an oil flow from the oil chamber inlet, the first screen having a first mesh coarseness. Further included is a second screen surrounding the first screen to define a second chamber volume surrounding the first chamber volume, the second screen having a second mesh coarseness that is greater than the first mesh coarseness. Yet further included is at least one exit nozzle having an exit cross-sectional area that is greater than or equal to a cross-sectional area of apertures of the second screen. Also included is a bypass valve disposed in a first position during a first pressure condition within the first chamber volume and in a second position during a second pressure condition within the first chamber volume.

The present invention teaches a method and apparatus to quickly and inexpensively implement advanced, bypass grade, fine, or additional filtration to engines and hydraulic systems. The present invention has the ability to make quick hydraulic connection to the engine or hydraulic system, where oil is super cleaned, without major modifications as is the paradigm by traditional bypass filtration systems and without removing any lubricant from the engine or system that the present invention is connected to, as is the paradigm of traditional bypass filtering systems. When connected to the normally provided stud for the spin-on oil filter in an engine or hydraulic system, the net effect of interest to the present invention is that by simply placing the adapter at the point of connection of the spin-on oil filter, many of the necessary plumbing associated with the traditional bypass filter installation is obviated, as is the energy and labor intensive process of seeking for a pressure point and a return of the oil. The present invention relies on the differential pressure effected by either alone or in combination of an orifice restriction to effect flow of either engine oil or hydraulic fluid, to route through a high efficiency filter, in trapping and low pressure to flow, an amount of dirty oil and then to return same amount to reconstitute a total flow on the system, whereby supplemental or advanced filtration is quickly connected to an engine or hydraulic system.