A clogging degree estimation apparatus includes an information acquisition unit configured to acquire information indicating a vehicle's traveling status for each predetermined travel section, a coefficient determination unit configured to determine a clogging coefficient K based on the traveling status indicated by the information for each travel section, and a clogging degree calculator configured to calculate an increase in clogging degree based on the product of the clogging coefficient K and a distance of the travel section for each travel section and calculate, as the clogging degree, an integrated value of the increase in clogging degree calculated for each travel section.

A clogging degree estimation apparatus includes an information acquisition unit configured to acquire information indicating a vehicle's traveling status for each predetermined travel section, a coefficient determination unit configured to determine a clogging coefficient K based on the traveling status indicated by the information for each travel section, and a clogging degree calculator configured to calculate an increase in clogging degree based on the product of the clogging coefficient K and a distance of the travel section for each travel section and calculate, as the clogging degree, an integrated value of the increase in clogging degree calculated for each travel section.

A method for operating an air intake system for an engine is disclosed. The air intake system includes an air filter configured to provide filtered air to the engine for combustion. The method includes activating a blower, by a controller, to generate suction and draw purged contaminants from the air filter for facilitating a purging of the air filter. The method further includes deactivating the blower, by the controller, upon a determination of a completion of the purging of the air filter.

A method for operating an air intake system for an engine is disclosed. The air intake system includes an air filter configured to provide filtered air to the engine for combustion. The method includes activating a blower, by a controller, to generate suction and draw purged contaminants from the air filter for facilitating a purging of the air filter. The method further includes deactivating the blower, by the controller, upon a determination of a completion of the purging of the air filter.

Each time clogging of a filter (5) of an air cleaner is determined on the basis of intake negative pressure of an engine (2), and the air filter (5) is cleaned, an accumulated value of operating time of the engine (2) from previous cleaning until clogging is determined is taken as a cleaning interval (S), and sequentially measured. A plurality of stages are previously set by classifying a minimum value and a maximum value of the cleaning interval (S), and the measured cleaning interval (S) is added to the stage to which the measured cleaning interval (S) is to belong, among the stages. A histogram in which an axis of abscissas is taken as the stage, an axis of ordinates is taken as frequency of the cleaning interval (S) is constructed, and an approximate straight line (L2) illustrated by a solid line is obtained by approximating a characteristic line (L1) of the histogram illustrated by a dotted line to a straight line. A characteristic of the histogram is changed as the deterioration of the air filter (5) progresses, and when a slope of the approximate straight line (L2) based on the characteristic gradually decreases from right-upward slop illustrated by a thin line, exceeds (?Y/?X=0) equivalent to the horizontal, deterioration of the air filter is determined.

A cleaning module (10) for cleaning a media flow of a first medium contaminated with a second medium that has a housing (12) having an inlet (18) and an outlet (20, 21) and a replaceable filter element (30) arranged within the housing (12). In this arrangement, a flow direction (32) of the media flow is directed through the filter element (30) in the specified installed state against the force of gravity. The filter element (30) has an absorptive and/or adsorptive material (34) for picking up at least a portion of the second medium in the first medium. A filter element for the cleaning module (10) and a filter system (100) having the cleaning module (10) are disclosed.

A cleaning module (10) for cleaning a media flow of a first medium contaminated with a second medium that has a housing (12) having an inlet (18) and an outlet (20, 21) and a replaceable filter element (30) arranged within the housing (12). In this arrangement, a flow direction (32) of the media flow is directed through the filter element (30) in the specified installed state against the force of gravity. The filter element (30) has an absorptive and/or adsorptive material (34) for picking up at least a portion of the second medium in the first medium. A filter element for the cleaning module (10) and a filter system (100) having the cleaning module (10) are disclosed.

An air filter, including: an openable filter housing having an inlet for air to be cleaned, an outlet for cleaned air, a filter element exchangeably arranged with the filter housing. The filter element includes a filter medium radially surrounding and defining an interior space within the filter element and a support element secured to the filter element. The support element faces away from the filter medium and has a lateral support surface having a cylindrical section and/or a section with a cross section that changes in the direction of the element axis, whose main axis runs axially or parallel to the element axis and with which the support element is supported at least transversely to the element axis against a corresponding support section arranged on a side of the filter housing.

An air filter, including: an openable filter housing having an inlet for air to be cleaned, an outlet for cleaned air, a filter element exchangeably arranged with the filter housing. The filter element includes a filter medium radially surrounding and defining an interior space within the filter element and a support element secured to the filter element. The support element faces away from the filter medium and has a lateral support surface having a cylindrical section and/or a section with a cross section that changes in the direction of the element axis, whose main axis runs axially or parallel to the element axis and with which the support element is supported at least transversely to the element axis against a corresponding support section arranged on a side of the filter housing.

The present disclosure relates to an exhaust scavenging system for an engine system including an engine enclosed in an engine enclosure and an air intake system including an air filter having a filter element for filtering air. The exhaust scavenging system includes an exhaust conduit, a venturi, and a valve system. The exhaust conduit is coupled to the engine and is configured to receive exhaust gas discharged by the engine. The venturi is associated with the exhaust conduit and operates to generate a suction to draw air from the air filter and the engine enclosure. The valve system is configured to selectively fluidly connect the venturi with the engine enclosure or the air filter. The valve system fluidly connects the venturi with the air filter for facilitating purging of the filter element of the air filter.