Abstract:
A cyclone separator including an initial cyclone arrangement (1) arranged first in relation to a flow direction (18) through the separator; a second cyclone arrangement (2) connected in series with the initial cyclone arrangement; a bypass channel (3) bypassing the second cyclone arrangement (2), and a volumetric flow controlled valve device (4) for selectively directing a partial stream (5) through the bypass channel (3).
Abstract:
A filter element has a fold arrangement and a shaped seal extending about at least one section of a circumference of the fold arrangement. The shaped seal consists of a thixotropic sealing material or at least contains such a thixotropic sealing material. The thixotropic sealing material is thixotropic PUR or thixotropic silicone or a mixture of both.
Abstract:
An axial flow filter element including alternately arranged flat and folded filter media layers forming axial channels having an open cross-section, one end of each channel of a first group being sealed and the remaining channels being sealed at the other end so that fluid flowing through the element from an inflow face at one axial end must pass from a channel of the first group through the filter media to a channel of the second group to exit from a discharge face at the other axial end; a channel of the second group adjoining each side of each channel of the first group spaced from the edge of the filter element so fluid can flow through the entire lateral area of the first group of channels except for the folded edges; a peripheral seal constructed as an annular collar adjacent an axial end face of the filter element and connected by an axial section to the exterior of the filter element for sealing the inflow end from the discharge end in a housing; a part of the annular collar protruding axially beyond the axial end face of the filter element, and a frame element connected to the projecting part of the collar for supporting the collar against radially acting external forces.
Abstract:
Apparatus for separating oil from crankcase ventilation gases of an internal combustion engine having at least two oil separators in the form of cyclones connected in parallel and traversed by the crankcase ventilation gases. The apparatus is equipped with a control valve that divides the volumetric flow of the crankcase ventilation gases into at least two subflows, depending on the magnitude of the volumetric flow, and conducts the subflows to the at least two oil separators. A control piston releases or blocks access of the gases to additional cyclones depending on the dynamic pressure of the crankcase gas.
Abstract:
A filter element has a fold arrangement and a shaped seal extending about at least one section of a circumference of the fold arrangement. The shaped seal consists of a thixotropic sealing material or at least contains such a thixotropic sealing material. The thixotropic sealing material is thixotropic PUR or thixotropic silicone or a mixture of both.
Abstract:
A filter device for filtering air in internal combustion engines equipped with a filter that can be inserted into a filter housing and has a flame-retardant effect. The filter comprises a main filter element and an upstream filter fleece whereby the flame-retardant effect is achieved by the fleece prefilter.
Abstract:
A filter element, especially for filtering intake air for an internal combustion engine, which filter element is composed of a coiled filter, through which a flow of air passes axially, and which has an annular gasket on at least one end face, the annular gasket being connected to the filter element by a welded, glued, extruded or fused connection, such that the annular gasket is inserted into a suitably constructed receptacle in a filter housing and radially and/or axially positions the coiled filter. The annular gasket is arranged directly on the end face of the coiled filter and is pressed axially and/or radially into the receptacle of the housing.
Abstract:
In a method for stabilizing folded filter media, a thread is coated with a hot melt adhesive to prepare a coated thread. The coated thread is wound in a plastic state about fold tips of a folded filter medium. The plastic state of the coated thread is maintained by applying heat. The heat is applied in the form of hot air, infrared radiation, or generated by microwaves.
Abstract:
An axial flow filter element including alternating flat and folded media layers forming axial channels, one end of a first group of channels being sealed and the remaining channels being sealed at the other end so fluid flowing through the element passes from channels of the first group through the filter media to channels of the second group to exit the filter; channels of the second group adjoining each side of channels of the first group spaced from the edge of the filter element so fluid flows through the entire lateral area of the first channels; an annular sealing collar adjacent an axial end face of the filter element connected to the exterior of the element to seal the element in a housing; part of the collar projecting axially beyond the end face of the element, and a frame connected to the projecting part for radially supporting the collar.
Abstract:
A filter device for filtering air in internal combustion engines equipped with a filter that can be inserted into a filter housing and has a flame-retardant effect. The filter comprises a main filter element and an upstream filter fleece whereby the flame-retardant effect is achieved by the fleece prefilter.