A filter assembly includes a conditioning device that conditions a flow of air upstream of a mass air flow sensor. The filter assembly includes a support frame. The filter assembly further includes a filter media coupled to the support frame, the filter media having a dirty side configured to receive a stream of air and a clean side configured to output a stream of air that has been filtered through the filter media. The filter assembly includes a conditioning device coupled to the support frame, the conditioning device positioned in a downstream direction from the clean side of the filter media with respect to the stream of air, the conditioning device offset from the clean side of the filter media by a separation distance.

A filter assembly includes a conditioning device that conditions a flow of air upstream of a mass air flow sensor. The filter assembly includes a support frame. The filter assembly further includes a filter media coupled to the support frame, the filter media having a dirty side configured to receive a stream of air and a clean side configured to output a stream of air that has been filtered through the filter media. The filter assembly includes a conditioning device coupled to the support frame, the conditioning device positioned in a downstream direction from the clean side of the filter media with respect to the stream of air, the conditioning device offset from the clean side of the filter media by a separation distance.

A vehicle provided with an engine, at least one air intake through which the engine takes in the external air needed to operate, and an air filter, which is arranged in the area of the air intake; the air filter comprises: at least one wave-shaped filtering material panel; an outer reinforcement mesh, an inner reinforcement mesh; and a heating device which is electrically connected to a group of electrified wires of the outer reinforcement mesh and is designed to cause an electric current to flow through said electrified wires, so as to generate heat, due to the Joule effect, on the inside of said outer reinforcement mesh.

An air intake assembly configured to direct air into a throttle body of an engine of an automotive vehicle includes an air cleaner enclosure, primary and secondary air intake ducts and a downstream air intake duct. The primary and secondary air intake ducts route air into the air cleaner enclosure through a first inlet. A method of directing the intake air into the throttle body is also provided. The air cleaner enclosure includes a valve that is configured to move from a closed position to an open position to draw air into the air cleaner enclosure through a second inlet. The valve is moved to the open position upon a pressure increase experienced within the air cleaner enclosure due to water intake. A snorkel has a snorkel inlet that is positioned at an elevation above the first and second inlets.

There is provided an air cleaner including: an outlet pipe through which air is discharged; an airflow meter that is inserted toward an interior of the outlet pipe through a wall of the outlet pipe; and a flow-regulating member that is formed projecting from an inner surface of the outlet pipe at a leading end side of the airflow meter, the flow-regulating member including an edge that is formed with a peaked shape with respect to the inner surface and that runs along a direction of flow of air, a rear end that is formed at a downstream end of the edge in the direction of flow, and that is shaped cut sharply toward the inner surface and a width-narrowing portion that decreases in width in a circumferential direction of the outlet pipe on progression downstream in the direction of flow.

A filter box assembly for a branched intake system in a vehicle includes an air filter and a filter box housing the air filter. The air filter has a downstream face. The filter box defines an airflow path between a dirty air intake opening and multiple clean air output openings, has a clean air section at the downstream face of the air filter from which each of the clean air output openings open, and includes an interior wall in the clean air section that branches the airflow path to each of the clean air output openings at the downstream face of the air filter.

Methods and systems are provided for reliably prognosing a vehicle component, such as a vehicle battery or an intake air filter. A state of degradation of the component is predicted based on a metric that is derived from a sensed vehicle operating parameter, the parameter selected based on the component being diagnosed, as well as based on past driving history and future driving predictions. The predicted state of degradation is then converted into an estimate of time or distance remaining before the component needs to serviced, and displayed to the vehicle operator.

A combined mass airflow sensor and hydrocarbon trap is provided for absorbing evaporative hydrocarbon emissions from an air intake duct of an internal combustion engine. The combined mass airflow sensor and hydrocarbon trap comprises a duct that supports a hydrocarbon absorbing sheet in an unfolded configuration within a housing. The duct communicates an airstream from an air filter to the air intake duct during operation of the internal combustion engine. An opening in the housing receives a mass airflow sensor into the duct, such that the mass airflow sensor is disposed within the airstream. Guide vanes extending across the duct reduce air turbulence within the airstream passing by the mass airflow sensor. Ports disposed along the duct allow the evaporative hydrocarbon emissions to be drawn into the interior and arrested by the hydrocarbon absorbing sheet when the internal combustion engine is not operating.

A cylindrical air cleaner for an internal combustion engine comprises: a cylindrical housing including a circumferential wall having an inlet, a top wall having an outlet, and a bottom wall opposed to the top wall; and a tubular filter element accommodated in the housing. A planar adsorbent filter to adsorb evaporated fuel of the internal combustion engine is located at an inner side of the filter element and extends in an axial direction of the filter element. The adsorbent filter includes a basal end portion fixed to an inner surface of the bottom wall. An inner surface of the filter element is spaced apart from each of opposite planes of the adsorbent filter by a gap that allows air to reach the outlet without passing through the adsorbent filter.

A combined mass airflow sensor and hydrocarbon trap is provided for absorbing evaporative hydrocarbon emissions from an air intake duct of an internal combustion engine. The combined mass airflow sensor and hydrocarbon trap comprises a duct that supports a hydrocarbon absorbing sheet in an unfolded configuration within a housing. The duct communicates an airstream from an air filter to the air intake duct during operation of the internal combustion engine. An opening in the housing receives a mass airflow sensor into the duct, such that the mass airflow sensor is disposed within the airstream. Guide vanes extending across the duct reduce air turbulence within the airstream passing by the mass airflow sensor. Ports disposed along the duct allow the evaporative hydrocarbon emissions to be drawn into the interior and arrested by the hydrocarbon absorbing sheet when the internal combustion engine is not operating.