An air intake assembly has an inlet member, a fluid reservoir, and an outlet. The inlet member defines a generally vertical oriented first fluid channel. The first fluid channel has a vertically extending portion, an upper inlet end, and a lower end. The fluid reservoir has an upper region that defines a second fluid channel. The fluid reservoir is attached to a lower end of the inlet member such that the first fluid channel vertically extending portion is substantially perpendicular to the second fluid channel. The fluid reservoir has an outlet defined by an aperture in a lower region of the fluid reservoir which forms a liquid collector. The trapdoor is pivotably attached to the fluid reservoir adjacent to the outlet. The rigid trapdoor is configured to open when exposed to a predetermined open force value to allow liquid to escape the liquid collector.

Methods and systems for deicing an engine air intake filter and an engine throttle are described. The methods and systems may include activating an evaporative emissions system heater and a pump to de-ice the engine air intake filter and the engine throttle. The deicing may be performed when an engine of a vehicle is not operating.

Provided is a construction machine capable of collecting foreign matter into a dust collection pocket and preventing the foreign matter from being scattered. The construction machine includes a cooler, an air passage forming member including a curved section, a dust-proof filter, a cooling fan generating a normal wind for cooling and a reverse wind opposite thereto, a dust collection pocket, and a turning member. The dust collection pocket has an opening and collects foreign matter at a position downstream of the inner wall surface of the outer corner of the curved section. The turning member is turned about a turning axis by the normal wind and the reverse wind, thereby being moved between a close position to close the opening and an open position to open the opening.

An air intake system may include an engine air cleaner having a dust valve. The intake system may be configured for arrangement on the engine. The dust valve may also be operable to open or close based on operating characteristics of the engine.

The Multiple Intake Air Filtration Device of this invention is a superior, highly efficient air cleaner that utilizes an array of multiple-intake cyclonic tubes spinning air at high speed to efficiently remove the specific sizes of dirt and other particulates that can be ingested in off-road and highway vehicle operations. This Multiple Intake Air Filtration Device is well-suited for use with both normally-aspirated engines and turbocharged engines. It is superior to automotive air cleaners that filter out dirt by use of a screen or porous media because it never becomes clogged as dirt and particulates are filtered out, and it is superior to devices that utilize only a single air flow through cyclonic tubes, because the device of this invention cleans intake air more efficiently while providing a strong flow of clean air to the engine or other component.

This air cleaner device is capable of preventing liquid, in the air that has been sucked in, from escaping to the downstream side of a filter element. The air cleaner device is provided in an intake passage of an internal combustion engine, and comprises: the filter element for removing foreign matter contained in the air that has been sucked into the intake passage; and a collision/separation part which is disposed on a surface of the filter element such that the liquid is separated from the air as a result of the air colliding with the collision/separation part, on the upstream side of the filter element in the suction direction of the air.

This air cleaner device is capable of preventing liquid, in the air that has been sucked in, from escaping to the downstream side of a filter element. The air cleaner device is provided in an intake passage of an internal combustion engine, and comprises: the filter element for removing foreign matter contained in the air that has been sucked into the intake passage; and a collision/separation part which is disposed on a surface of the filter element such that the liquid is separated from the air as a result of the air colliding with the collision/separation part, on the upstream side of the filter element in the suction direction of the air.

The utility vehicle includes a body; a frame that supports the body; an on-board device that is mounted on the frame and requires outside air; and an air intake conduit that is connected to the on-board device. An air intake port of the air intake conduit that sucks in outside air faces a center side of the utility vehicle.

An air cleaner assembly for filtering intake air for a power plant can include a filter cartridge disposed within a housing of the air cleaner assembly, a precleaner assembly including at least one particle separator for separating particulates from an airflow stream and a scavenge port for discharging the separated particulates, the precleaner assembly being located upstream of the filter cartridge, a scavenge system for evacuating the separated particulates out of the scavenge port, the scavenge system including an electric motor coupled to an fan, an input sensor generating an input signal relating to a parameter associated with one or more of the precleaner assembly, the air cleaner assembly, a power plant receiving air from the air cleaner assembly, and a vehicle associated with the power plant, and a controller for operating the speed of the scavenge system based on the input signal from the input sensor.

A water ingestion control system for an internal combustion engine can include a snorkel, at least one closure structure, a choking valve, and a controller. The snorkel can include an air intake opening and at least one evacuation inlet that can be selectively opened and closed by the closure structure. The choking valve can be located between the air intake opening and an air box and selectively open and close fluid communication between the snorkel and the air box. When in a closed state, the choking valve can close fluid communication between the snorkel and the air box and prevents fluid in the snorkel from flowing into the air box and the engine. The controller can be configured to place the choking valve in the closed state when the controller receives data indicative of the presence of water in the snorkel.