Abstract: An actuator for supplying compressed air for cleaning and drying a sensor of a vehicle, includes a compression unit configured to compress air from outside to form high-pressure compressed air, a drying unit configured to receive the compressed air compressed to a high pressure by the compression unit via a movement passage to remove moisture from the compressed air, and a storage tank connected to the drying unit via a connecting passage and configured to store the compressed air passing through the drying unit to be supplied to the vehicle, wherein the compressed air is stored in the storage tank so that high-pressure compressed air is generated and sprayed to the sensor of the vehicle, cleaning and drying the same in a short time.

Abstract: An apparatus for reducing flow noise of an air intake system of a vehicle is provided as an assembly of a body member and a cover member. An acoustic metamaterial unit includes a chamber having a predetermined size, an inlet flow path, and an outlet flow path provided therein and is connected to a pipe of an air intake system. The apparatus advantageously reduces or removes high-frequency flow noise occurring in a turbocharger by using the acoustic metamaterial unit. The size and shape of the acoustic metamaterial unit is standardized such that the acoustic metamaterial unit is used compatibly regardless of the type of vehicles, which can make it possible to advantageously reduce costs and improve salability.

Abstract: An embodiment variable valve device of a vehicle intake system includes a variable valve housing fixed to a housing of an air cleaner and including a valve passage penetrating the air cleaner, a variable valve flap rotatably coupled to the variable valve housing and configured to perform opening and closing operations based on an intake negative pressure of an engine to open and close the valve passage, and a cam protrusion and a leaf spring provided on the variable valve flap and the variable valve housing, respectively, wherein the cam protrusion and the leaf spring are in contact with each other.

Abstract: An embodiment variable valve device of a vehicle intake system includes a variable valve housing fixed to a housing of an air cleaner and including a valve passage penetrating the air cleaner, a variable valve flap rotatably coupled to the variable valve housing and configured to perform opening and closing operations based on an intake negative pressure of an engine to open and close the valve passage, and a cam protrusion and a leaf spring provided on the variable valve flap and the variable valve housing, respectively, wherein the cam protrusion and the leaf spring are in contact with each other.

Abstract: An apparatus for reducing flow noise of an air intake system of a vehicle is provided as an assembly of a body member and a cover member. An acoustic metamaterial unit includes a chamber having a predetermined size, an inlet flow path, and an outlet flow path provided therein and is connected to a pipe of an air intake system. The apparatus advantageously reduces or removes high-frequency flow noise occurring in a turbocharger by using the acoustic metamaterial unit. The size and shape of the acoustic metamaterial unit is standardized such that the acoustic metamaterial unit is used compatibly regardless of the type of vehicles, which can make it possible to advantageously reduce costs and improve salability.

Abstract: An apparatus of amplifying sound waves may include a metamaterial structure having a metamaterial inside thereof, an inlet through which air flows into the metamaterial structure, and a penetration portion formed to penetrate a portion of one side of the metamaterial structure, a membrane member coupled to the penetration portion, and a resonance member surrounding the membrane member and coupled to the metamaterial structure and including a space inside thereof and a discharge port fluidically communicating with an outside thereof and the internal space.

Abstract: A variable intake system for a vehicle is provided and includes an air cleaner that filters air via a filter and supplies the air to an engine. A main duct is connected to the air cleaner to supply the air, and a variable valve has a housing that is coupled and mounted to a mounting aperture of a mounting part disposed on a front end of the filter of the air cleaner. An internal passage of the housing is opened by suction pressure of the engine in the mounting part to suction external air. A projection formed on the housing of the variable valve is inserted into a projection seat formed in the mounting part, so that the variable valve is secured to the mounting part.

Abstract: An apparatus of amplifying sound waves may include a metamaterial structure having a metamaterial inside thereof, an inlet through which air flows into the metamaterial structure, and a penetration portion formed to penetrate a portion of one side of the metamaterial structure, a membrane member coupled to the penetration portion, and a resonance member surrounding the membrane member and coupled to the metamaterial structure and including a space inside thereof and a discharge port fluidically communicating with an outside thereof and the internal space.

Abstract: A variable intake system for a vehicle is provided and includes an air cleaner that filters air via a filter and supplies the air to an engine. A main duct is connected to the air cleaner to supply the air, and a variable valve has a housing that is coupled and mounted to a mounting aperture of a mounting part disposed on a front end of the filter of the air cleaner. An internal passage of the housing is opened by suction pressure of the engine in the mounting part to suction external air. A projection formed on the housing of the variable valve is inserted into a projection seat formed in the mounting part, so that the variable valve is secured to the mounting part.

Abstract: A filter cover structure of a drawer-type air cleaner is provided. The structure includes a main body in which an air filter reception part is formed and a filter cover provided to open or close the air filter reception part. The filter cover includes a lever configured to be locked to or released from a filter cover fastening part of the air filter reception part by rotating the lever around a rotating shaft.

Abstract: A hose clamp may include a body portion having an annular shape which is open at one portion and surrounding an external surface of a hose and an external surface of an object to be fastened, a stationary portion coupled to an external surface of one end portion of the body portion, a movable portion coupled to an external surface of an opposite end portion of the body portion, and a fastening portion coupled to the stationary portion to be movable along axial directions of the body portion. The fastening portion moves along one of the axial directions of the body portion and presses the movable portion in a first circumferential direction of the body portion such that the one end portion and the opposite end portion of the body portion move toward each other and the body portion inwardly presses and fastens the hose and the object.

Abstract: A hose clamp may include a body portion having an annular shape which is open at one portion and surrounding an external surface of a hose and an external surface of an object to be fastened, a stationary portion coupled to an external surface of one end portion of the body portion, a movable portion coupled to an external surface of an opposite end portion of the body portion, and a fastening portion coupled to the stationary portion to be movable along axial directions of the body portion. The fastening portion moves along one of the axial directions of the body portion and presses the movable portion in a first circumferential direction of the body portion such that the one end portion and the opposite end portion of the body portion move toward each other and the body portion inwardly presses and fastens the hose and the object.

Abstract: A virtual engine sound system for a vehicle includes: a speaker mounted on an intake system, and generating an anti-noise sound with inverted phase to an engine noise of an internal combustion engine or a virtual sound; and a valve which is movable between an open position in which an outlet of an air cleaner is opened and a closed position in which the outlet of the air cleaner is closed. The speaker is controlled by an ECU, and the valve is controlled by a valve controller. The ECU controls the speaker to generate the anti-noise sound in an operating condition in which the internal combustion engine is operating, and controls the speaker to generate the virtual sound in an operating condition in which the internal combustion engine is not operating.

Abstract: A filter apparatus may include a frameless filter having a sealing member coupled to the edge portion of a filter paper which filters foreign matters, and a filter paper case having a seating space of the filter paper, and fitted and coupled to the sealing member to form a self-lock holding force with the sealing member.

Abstract: An air duct for a vehicle functions to reduce intake noise and includes an outer housing configured having a pipe shape so that outside air is introduced into an engine therethrough. The air duct also has an inner pipe fixed in the outer housing so that an outer surface of the inner pipe is spaced apart from an inner surface of the outer housing, thereby partitioning the inside of the outer housing in a radial direction. A space between the inner pipe and the outer housing communicates with the inside of the inner pipe.

Abstract: A virtual engine sound system for a vehicle includes: a speaker mounted on an intake system, and generating an anti-noise sound with inverted phase to an engine noise of an internal combustion engine or a virtual sound; and a valve which is movable between an open position in which an outlet of an air cleaner is opened and a closed position in which the outlet of the air cleaner is closed. The speaker is controlled by an ECU, and the valve is controlled by a valve controller. The ECU controls the speaker to generate the anti-noise sound in an operating condition in which the internal combustion engine is operating, and controls the speaker to generate the virtual sound in an operating condition in which the internal combustion engine is not operating.

Abstract: A filter cover structure of a drawer-type air cleaner is provided. The structure includes a main body in which an air filter reception part is formed and a filter cover provided to open or close the air filter reception part. The filter cover includes a lever configured to be locked to or released from a filter cover fastening part of the air filter reception part by rotating the lever around a rotating shaft.

Abstract: A filter apparatus may include a frameless filter having a sealing member coupled to the edge portion of a filter paper which filters foreign matters, and a filter paper case having a seating space of the filter paper, and fitted and coupled to the sealing member to form a self-lock holding force with the sealing member.

Abstract: An air duct for a vehicle functions to reduce intake noise and includes an outer housing configured having a pipe shape so that outside air is introduced into an engine therethrough. The air duct also has an inner pipe fixed in the outer housing so that an outer surface of the inner pipe is spaced apart from an inner surface of the outer housing, thereby partitioning the inside of the outer housing in a radial direction. A space between the inner pipe and the outer housing communicates with the inside of the inner pipe.

Abstract: An apparatus for cooling intake air temperature of a vehicle may include a vortex tube receiving high pressure air discharged from an intercooler of a vehicle and then separating the high pressure air using centrifugation into high temperature air and low temperature air; a first bypass line connecting the vortex tube with a compressor, allowing the low temperature air to move therethrough, and selectively opened/closed by a first check valve; a second bypass line connecting the vortex tube with an exhaust line of the vehicle and allowing the high temperature air to move therethrough as a second check valve is opened/closed; and a controller controlling to open or close the first and second check valves.