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 vehicle air induction assembly includes an air guide, an air duct and a bracket member. The air duct is configured to supply air to an engine air filter. The air guide has an opening therein and is configured to be connected to a vehicle fascia. The air duct is configured to be connected to the air guide such that air flowing through the opening flows into the air duct. The bracket member is connected to the air guide. The bracket member has a first side wall, a second side wall and a lower wall connecting the first and second side walls. The bracket member and the air duct are disposed on opposite sides of the air guide opening. An air inlet is defined by the air guide and the bracket member.

A hose clamp includes an open ended ring body having a first engagement pin located at one end portion, a second engagement pin located at another end portion, and a retaining clip located adjacent the first engagement pin; and a connecting lever detachably attached to the ring body, and including a lever body having a first pivot notch located on one end, a second pivot notch spaced away from the first pivot notch, and a clipping slot located at another end. The first notch of the lever is connected to the first engagement pin of the ring, and the second notch is connected to the second engagement pin of the ring. When the lever is rotated relative to the ring body, the first notch pivots around the first engagement pin and the second notch of the lever pulls the second engagement pin around the first engagement pin.

Systems and methods are disclosed for an air intake assembly comprising an airbox defining a plenum for enclosing an air filter, an intake tube attached to the air filter at a first end of the intake tube, the intake tube having a shoulder, and a multi-lipped gasket for detachably connecting the intake tube to the airbox, the multi-lipped gasket comprising a body portion defining a bore for sealingly engaging the intake tube, a lip adjacent the bore for engaging the shoulder of the intake tube, and a pair of distal lips for sealingly engaging the airbox, wherein the airbox, the air filter, and the intake tube are adapted so that air flows into the airbox, through the air filter, through the intake tube, and into a combustion engine (optionally reaching the combustion engine by first passing through a turbocharger and intercooler) of a vehicle.

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.

A hinged connection device includes first and second tubular components around a main axis which respectively include a first male hinge member provided with an end head shaped as a spherical segment and a second female hinge member provided with a complementary seat receiving movably inside the end head of the first member. The first member is configured to be housed at least partially inside the first component and to be assembled to the second component throughout the second member. The second member is configured to be mounted around the second component and assembled to the first component over the first member such that the two tubular components are assembled together by the reciprocal intersection of the two hinge members.

An air intake system for a vehicle has a conduit having an internal wall forming an air passage. A deflector is disposed within the air passage. A restricting structure is disposed within the air passage between the deflector and a conduit outlet. The restricting structure defines at least in part an opening substantially laterally aligned with the deflector. The restricting structure has a lateral wall disposed downstream of the deflector and extending within the air passage. The lateral wall has a front surface generally facing a conduit inlet, and a plurality of surface-increasing features provided on the front surface. Each of the surface-increasing features has a length of at least 1 mm measured from the front surface in a direction normal thereto. An air intake system having a collector connected to the deflector and positioned to collect at least some moisture from air flowing past the deflector is also described.

An air induction system includes an air duct and an air permeable membrane. The air duct is configured to deliver intake air to an engine. The air duct includes a cylindrical wall defining a bore and an enclosure projecting from an outer radial surface of the cylindrical wall and defining a cavity therein. The cylindrical wall has an opening extending therethrough that enables airflow from the bore to the cavity in the enclosure. The air permeable membrane is configured to cover the opening in the cylindrical wall.

An intake plenum is for a marine engine, the marine engine having first and second throttle devices for controlling flow of intake air to the marine engine. The intake plenum has an airbox providing an expansion volume, first and second inlets that convey the intake air in parallel to the expansion volume, first and second outlets that convey the intake air in parallel from the expansion volume to the first and second throttle devices, and first and second Helmholtz-style attenuator devices located at the first and second outlets, respectively. Together the first and second inlets, expansion volume, and first and second Helmholtz-style attenuator devices are configured to attenuate different frequencies of sound emanating from the marine engine via the first and second outlets.

An intake manifold includes a surge tank, an inlet pipe, and intake pipes. The surge tank includes a curved portion and a bulging portion. The curved portion forms a curved outer wall of the surge tank and includes an inner surface that is continuous with inner surfaces of entrances of the intake pipes. The bulging portion bulges into the surge tank toward the curved portion and overlaps with an imaginary extension of an exit of the inlet pipe into the surge tank. The bulging portion includes a flow changing portion. The flow changing portion is configured to direct a flow of intake air toward a section that is more interior into the surge tank than the bulging portion in relation to the inlet pipe and located on part of the inner surface of the surge tank that is continuous with the inner surface of the curved portion.