An improved internal combustion engine air intake system that operates in tandem with the original equipment air intake system and does not endanger the vehicle warranty and provides improved airflow to the engine which improves engine performance and efficiency. The improved internal combustion engine air intake system also provides one or more additional air inputs taken from a different location than the original equipment air intake which improves the likelihood of providing additional cooler, denser, air to the engine air intake which will improve engine efficiency.

A filter element has, on a filter element housing, a first and a second filter medium body, which are arranged at an angle to each other.

A filter element, including: a first filter media body having a filter media and an inflow side and an outflow side; and a second filter media body having a filter media and an inflow side and an outflow side; wherein the first filter media body and the second filter media body are adapted for installation into a filter element housing shared by both filter media bodies; wherein the filter element has a longitudinal axis; wherein the filter media bodies in the filter element housing delimit a common clean chamber shared by both filter media bodies, the common clean chamber from which the cleaned fluid is to be discharged via at least one outflow aperture; wherein at least one of the filter media bodies is constructed from at least two sections, each section differing in size from other sections.

A filter element assembly includes a filter body and an auxiliary filter. The filter body includes a sidewall around a hollow core. Further the filter body and auxiliary filter are both received and held on a support including a base and a cage.

An air cleaner assembly (100) for an internal combustion engine, has a housing (10) with at least one intake air inlet and at least one intake air outlet (14) formed in the housing wall (18) for supplying an intake air to the internal combustion engine, at least one filter element disposed within the housing (10) for filtering the intake air, separating a rough air side from a clean air side inside the housing (10), and at least one flow straightener insert (20) comprising a body structure (40) with a hydrocarbon absorbing medium (30) disposed at the clean air side of the filter element. The at least one outlet (14) accommodates the at least one flow straightener insert (20).

A spin tube assembly for an engine air cleaner is provided. The spin tube assembly includes a housing, a spin tube panel, a plurality of spin tubes and at least one constrictor. The plurality of spin tubes are supported on the spin tube panel in parallel relation to one another. Each spin tube of the plurality of spin tubes includes a helical element causing air entering the spin tube to rotate such that particles within the air are moved by centrifugal action outwardly against a wall of the spin tube. At least one spin tube of the plurality of spin tubes has a constrictor upstream from the helical element thereof. The constrictor causes a localized restriction of air entering the at least one spin tube compared to the spin tubes without constrictors. Methods of use and configuration are also provided.

A filter element assembly includes a filter body and an auxiliary filter. The filter body includes a sidewall around a hollow core. Further the filter body and auxiliary filter are both received and held on a support including a base and a cage.

A filter element, including: a first filter medium body having an outflow side and an inflow side; a second filter medium body having an outflow side and an inflow side; wherein the filter element has a longitudinal axis; wherein the first and second filter elements are configured both install into and share in common a filter element housing in which the filter medium bodies delimit a shared common clean space from which the purified fluid is to be discharged via at least one outflow opening; wherein the first filter medium body and the second filter medium body have different sizes and/or different shapes and/or different angular positions of the outflow sides adjoining the clean space.

A filter device having a filter housing and a filter element having a first and a second filter media body at a common filter element housing. Cooperating positive-locking elements are disposed at the filter housing and a the filter element housing, which engage in a positive-locking manner.

An air filter cartridge (1) for an air intake system for a vehicle engine extends along a main axis (X-X). The air filter cartridge includes a filter element (5), suitable to filter the air sucked through the filter element and having extension along the main axis (X-X) and an internal structure (3) that extends inside of the filter element (5). The internal structure (3) identifies a plurality of ducts (30) fluidically independent from each other through which the filtered air flows separately. Each duct (30) extends between an inlet mouth (31), placed in proximity of a respective filter element portion (51), and an outlet mouth (32) placed in proximity of the head element (2) in such a way as to induce the intake of air through each duct (30) through the respective portion of the filter element (51).