A combustion air intake apparatus for a truck, tractor, or bus vehicle for highway use includes an air deflecting element that is selectively deployable to cause dynamic air pressure created by vehicle motion to increase static air, pressure within the intake apparatus under appropriate conditions. Deployment or retraction of the air deflecting element is responsive to at least one of forward speed of the vehicle, air pressure downstream of an air inlet opening, or throttle position, and may further be responsive to detection of precipitation and/or particulate material. An air deflecting element may include a moveable plate or flap, moveable louvers, or a moveable duct.

An intake swirl gasket is disclosed herein. It is installed between a cylinder head and an intake manifold and comprises plural airflow holes for respectively communicating with plural intake passages of the cylinder head; and plural diversion devices respectively disposed in the plural airflow holes and each having an axis and plural splitter blades extended from the axis for connecting to an inner wall of each of the plural airflow holes, wherein each of the plural splitter blades is shaped as an arc to form a recessed surface towards the intake manifold at one side thereof and a convex surface towards the cylinder head at the other side thereof, and wherein an included angle between each of the plural splitter blades and an end face of the intake swirl gasket oriented towards the cylinder head ranges from 50 to 80 degrees.

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 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.

An intake device for an internal combustion engine configures a flow passage for intake air that is drawn into combustion chambers. The intake device includes an intake manifold configuring multiple runners that respectively distribute intake air to multiple cylinders, a surge tank including a cavity that is connected to the runners and defines a convergence portion, a throttle body incorporating a throttle valve, and a connection pipe connecting the surge tank and the throttle body and configuring a curved flow passage extending between the throttle body and the surge tank. The connection pipe includes a partition plate that divides the curved flow passage into a circumferentially inner flow passage and a circumferentially outer flow passage.

An intake tower for a work vehicle has a grille with a front face and a duct defining an internal volume and an air intake. The air intake has a periphery at which the grille is mounted and first and second ends. The first end of the air intake is closer to a region of relative low pressure within the internal volume of the duct than the second end. A partition extending between the first and second ends of the air intake is recessed from the front face of the grille. The partition defines one or more intake openings leading to the internal volume of the duct. The opening(s) or portion thereof define a first flow area at the first end of the air intake and a second flow area at the second end of the air intake. The first flow area is lesser than the second flow area, and the opening(s) or portion thereof defining the first flow area is located nearer the front face of the grille than the opening(s) or portion thereof defining the second flow area.

An air intake system is provided that supplies charge air to multiple cylinders in an in-line configuration in an uniflow-scavenged, two-stroke opposed-piston engine. The engine is configured such that the intake ports of the cylinders are situated in one intake chamber within the engine block. The air intake chamber includes a feature to balance the mass of air that reaches the intake port of each cylinder in the engine.

A rectification structural body includes a pipe line configured such that air flows from an air cleaner to an airflow sensor. The pipe line has a portion bent in an arc shape. In the pipe line, an air guide plate dividing an internal space of the pipe line into an inner portion and an outer portion of the arc is provided substantially parallel with the center line of the pipe line. The air guide plate includes two ribs. The two ribs are each in an arc shape. The two ribs stand, inside the pipe line, facing each other to extend toward each other. End edges of the two ribs are separated from each other in a rib standing direction by 0.5 to 5 mm at least on an airflow sensor side of the pipe line.

There is disclosed a cooling system for a liquid cooled internal combustion power plant housed in an engine compartment in a tail cone of an aircraft. The cooling system has: a tail cone inlet defined through a wall of the tail cone and fluidly communicating with an environment; a wall inlet defined through a firewall of the engine compartment; a blower within the engine compartment and having a blower inlet and a blower outlet, the blower inlet fluidly communicating with the environment via the tail cone inlet, via the wall inlet, and via an interior of the engine compartment; a blower outlet defined through a wall of the aircraft and fluidly communicating with the environment; and a cooling flow path extending from the tail cone inlet to the air outlet and across the wall inlet, the cooling flow path in heat exchange relationship with the power plant.

An ejector includes a high-pressure passage, a low-pressure passage, and a connection passage. The high-pressure passage includes an upstream end and a downstream end. The upstream end is configured to be connected to a passage through which a high-pressure gas flows. The low-pressure passage is connected to the downstream end of the high-pressure passage. The connection passage is connected to a junction of the high-pressure passage and the low-pressure passage. The high-pressure passage is bent at one or more locations between the upstream end and the downstream end.

Provided is a centrifugal compressor, including: a movable member which is movable between a first position and a second position, the first position being a position at which an opening degree of an auxiliary flow passage arranged more on an outer diameter side than a main flow passage becomes a first opening degree, the second position being a position at which an opening degree of the auxiliary flow passage becomes a second opening degree smaller than the first opening degree; and a linear actuator configured to drive the movable member in a rotation axis direction of the impeller.