Abstract: An intake manifold assembly includes a first manifold body portion having a first flange, and a second manifold body portion having a second flange. A joint clip defines a channel, with the first flange and the second flange disposed within the channel. The joint clip, the first flange and the second flange are configured so that the joint clip may be freely positioned over the first flange and the second flange in an initial installation position, after which the joint clip is moved under an axial force along a longitudinal axis parallel with the first flange and the second flange into a locking position, in which the first flange and the second flange engage the joint clip in compressive interlocking engagement to secure the first manifold body portion and the second manifold body portion together.

Abstract: An intake system (10) of an internal combustion engine includes an intake manifold (12) with at least two feed pipes (14) connected with cylinder head intake ports of the internal combustion engine and includes at least one intermediate chamber (30) having connections (34) to an interior volume (24) of each feed pipe (14). Each connection (34) can be opened or closed by way of an intake control valve.

Abstract: An intake manifold assembly is disclosed that utilizes a barrel valve apparatus comprised of segments and connectors. The barrel valve apparatus and its housing component can be tapered and flexible. A protrusion such as a draft can be used to seal the performance of the barrel valve apparatus without a seal. Openings in the barrel valve apparatus can possess an integrated bellmouth shape.

Abstract: The application relates to a hand-held working implement comprising an internal combustion engine, an air filter, and an intermediate flange, wherein the intermediate flange is arranged between the air filter and the internal combustion engine, wherein the bottom of the intermediate flange is arranged opposite the air filter bottom, wherein the air filter bottom and the intermediate flange bound an interior space, wherein the interior space comprises a portion of the duct, wherein a portion of the duct in the interior space is bounded by at least one boundary wall which protrudes into the interior space transversely with respect to the air filter bottom, wherein the boundary wall is formed integrally on the intermediate flange and/or on the air filter bottom, and wherein the boundary wall bridges the spacing between the air filter bottom and the bottom of the intermediate flange.

Abstract: A vehicle includes a variable intake pipe length device capable of adjusting the length of an intake pipe according to the condition of an engine, the intake pipe being provided in an intake passage for inducing air from an air cleaner box to an intake port of the engine, the intake pipe including a fixed funnel and a movable funnel movable relative to the fixed funnel by a driving force of an actuator. A rotating pipe as a part of the intake pipe is rotationally driven by the actuator, and the movable funnel is moved by rotating the rotating pipe, thereby varying the length of the intake pipe.

Abstract: An intake system is provided. The intake system including an intake manifold coupled to an engine and a vacuum port located in said intake manifold and in an air flow path downstream of a throttle body, the vacuum port including a molded flow disruptor including a cross-beam traversing an outlet of the vacuum port. The intake system may further include a vacuum passage coupling the vacuum port to a vehicle subsystem.

Abstract: A vehicle intake duct surrounds a high-flow intake passage, which ensures flow capacity and does not spatially restrict other components. The vehicle includes an engine attached to a vehicle body frame, with the intake duct interconnecting an air cleaner and a throttle body, a transmission for sending engine output to wheels, and a seat mounted on an upper longitudinal frame section of the vehicle body frame. The air cleaner is also provided on the upper longitudinal frame section forward of the seat. The intake duct includes a first extending portion descending rearwardly and downwardly from an outlet of the air cleaner and passing laterally of the throttle body, a curved portion extending rearwardly from the first extending portion and toward a center of the vehicle body frame, and a second extending portion wound around toward a rear portion of the throttle body and connected thereto.

Abstract: An intake manifold assembly for an internal combustion engine that has a modular construction and includes a base member, a runner, and a shell, wherein the base member removably attaches to the engine, and the runner and the shell each separately and independently removably attach to the base member. In another aspect, the assembly further includes a fastener for attaching the runner to the base member, wherein the shell is formed so as to retain the fastener between the shell and the base member when the shell is attached to the base member. In another aspect, the assembly further includes a bumper affixed to a surface of the base member, wherein the bumper abuts a surface of the internal combustion engine. In another aspect, the base member includes a sealing ridge that mates with a sealing groove provided on the shell.

Abstract: A intake manifold or splitter for an internal combustion engine and a process for production of same wherein a functional unit, comprised of a shaft with valves attached thereto, is assembled with bearing parts comprising clothespin-like clamps that clamp onto the shaft to form a sub-assembly which is mounted as a unit into receiving housing of the manifold or splitter, wherein a molding or over-molding at is provided at a level of the contact surface of a connection plate to lock the assembly of valves, shaft and bearings into the receiving housings and form sealing formations that seal against gases between the intake manifold or splitter and the internal combustion engine.

Abstract: An intake system is provided for an internal combustion engine, which includes, but is not limited to an air purifier/resonator configuration, in which a resonator element is situated in the purified air area of the intake system as an integral component in the air outlet of the air purifier, coaxially to the air outlet.

Abstract: An intake system for an internal combustion engine includes: a cylinder block in which a combustion chamber is formed; a cylinder head in which a plurality of intake ports to introduce the combustion air into the combustion chamber are formed; a cylinder head cover disposed on an upper side of the cylinder head; a cam position sensor that detects positions in an axial direction of a motor of a cam slide mechanism and an intake side cam, the motor being disposed on an upper side of the cylinder head cover and driving the intake side cam; and an air cleaner disposed on an upper side of the cylinder head cover, the motor, and the cam position sensor, and a concave portion deeper than the other portions is formed in a bottom wall portion of the air cleaner, and is disposed between the motor and the cam position sensor.

Abstract: An air-guiding device is used in an intake manifold arranged between an internal combustor and an air-filtering device. The air-guiding device is a tubular element made of a flexible metal sheet and includes a positioning section and an air-guiding section. The positioning section is fit in the intake manifold. The air-guiding section includes helical blades that converge as they extend from the positioning section.

Abstract: An engine air intake tract includes a flexible air intake duct having a flexible tubular body. A plurality of radially extending convolutes are formed in and spaced apart on an axially extending outer wall of the tubular body. Each convolute has a circumferential ring-shaped inwardly extending peak bordered by outwardly extending troughs. A liquid sump is formed into a lower portion of the tubular body and includes a plurality of spaced sump chambers with each chamber formed between and connected to at least two adjacent ones of the convolutes and extending radially outwardly from the convolutes.

Abstract: An intake system of an engine is provided. The intake system including an intake manifold, a vacuum port located in said intake manifold and in an air-flow path downstream of a throttle body and upstream of a plurality of intake runners, the vacuum port including a molded flow disruptor including a cross-beam traversing an outlet of the vacuum port, the cross-beam oriented at an angle between 0 and 90 degrees with respect to an axis of a throat in the intake manifold, and a vacuum passage coupling the vacuum port to a vehicle subsystem.

Abstract: An air intake device for an internal combustion engine of a vehicle is provided. The air intake device includes a cylinder head of a cylinder, an inlet port, which is connected to the cylinder head, and a guiding system. The guiding system includes a separating wall element that divides at least one portion of the inlet port with respect to the cylinder head into a first upper part port and second lower part port. The guiding system has a flap element for opening and closing the first upper part port.

Abstract: An induction system in an engine is provided. The air induction system includes an induction conduit including an air flow passage in fluidic communication at least one combustion chamber in the engine and a passive-adsorption hydrocarbon trap positioned within the induction conduit, a portion of the passive-adsorption hydrocarbon trap defining a boundary of the air flow passage, the passive-adsorption hydrocarbon trap including a breathable layer coupled to a substrate layer coupled to the induction conduit, a hydrocarbon adsorption layer interposing the breathable layer and the substrate layer.

Abstract: An intake system for a turbocharged internal combustion engine and a method for controlling warm-up of a turbocharged internal combustion engine are provided. The intake system includes an intake manifold defining a plenum chamber connectable to a plurality of engine cylinders, an intake duct opening into the plenum chamber and supplying a gaseous fluid thereto, an electric heater provided for heating the gaseous fluid, and a cooler supplied with a cooling fluid, provided for cooling the gaseous fluid. The heater and the cooler cooperate to form a conditioning module positioned within the plenum chamber in such a way as to intercept at least a substantial part of the gaseous fluid entering the plenum chamber from the intake duct, wherein the cooler is arranged in series with the heater.

Abstract: A hollow plastic part may include at least two plastic shells connected with one another at a respective edge along at least one joining plane. Each plastic shell may have at least a first component and a second component, wherein the plastic of the first component may have a lower melting temperature than the plastic of the second component. The first component may extend on at least one plastic shell in a caterpillar-like manner along at least part of the respective edge of the second component of this plastic shell.

Abstract: A device of dividing the intake tract of an engine system positioned upstream from the throttle plate that optionally has holes in at least one divider section and functions to enhance airflow from the air source to the throttle plate.

Abstract: A polymeric vessel includes a first shell formed from a thermoplastic polymer and including a weld stub, and a second shell formed from the thermoplastic polymer and including a weld anvil matable with the weld stub. The polymeric vessel also includes a friction weld joint joining the weld stub and the weld anvil, and a coupling element interconnecting the first shell and the second shell and spaced apart from the friction weld joint.

Abstract: An air-intake duct, which is disposed between an air outlet of an air cleaner box constituting an air cleaner and an air inlet of a throttle body constituting a throttle device, is configured to guide air cleaned by the air cleaner to the throttle device. The air-intake duct includes a tubular coupling member including an upstream coupling portion coupled in an air tight manner to the air outlet of the air cleaner box and a downstream coupling portion air-tightly coupled to the air inlet of the throttle body, the coupling member being entirely formed of an elastic rubber material. The air-intake duct also includes an air guide member including a first air inlet configured to take in air therethrough from inside the air cleaner box, a first air outlet configured to discharge the air therethrough toward the throttle body, and a fitting portion fitted to the coupling member.

Abstract: An air directing device for motorcycles with an inner air directing plenum and an engine air cleaner bottom housing. The inner air directing plenum nests into the air cleaner bottom housing half. The walls of the air cleaner housing include an aperture that aligns with the forward opening of the inner air directing plenum. The air cleaner housing bottom base plate includes an aperture that aligns with the rear portion of the inner air directing plenum and also aligns with the location of the rear cylinder of a twin cylinder motorcycle engine. An optional outer air directing plenum attaches to the top housing half of an engine air cleaner. The space created between the top housing half and the inside surface of the outer plenum allows an air flow when the motorcycle is in motion that helps cool the rear cylinder of a twin cylinder motorcycle engine.

Abstract: A method and apparatus for tuning an engine by a modified pod filter or velocity stack using a tunable pod air filter with base and cap members forming a housing that is joined together by a filter membrane to define a plenum or resonance chamber within the housing that contains only air drawn in through the filter. An aperture in the base member passes air to the inlet of an engine. A tuning sleeve is sealingly engaged within the aperture and extends into the plenum to control air flow out of the plenum and into the engine. The tuning sleeve is tubular with a pattern of vents through its surface to control flow rate. The vents may be drilled, punched or otherwise cut through the sleeve to control air flow. After being vented, the sleeve is reinserted into the filter housing and the filter is installed on the engine.

Abstract: An intake air routing device for an engine having a plurality of cylinders, includes a pair of half case bodies forming an air chamber, an air filter arranged in the air chamber and configured to purify outside air received via an intake duct, and a plurality of intake passages extending from the air chamber. The plurality of intake passages are connected with respective intakes ports of the engine. A partition plate is disposed in the air chamber, and is formed separately from the case bodies. The partition plate is arranged in the air chamber such that it extends in the air chamber by a predetermined length in a direction intersecting with a direction where the intake passages are lined up so as to partition the intake passages from each other. Such intake air routing device reduces intake interference while maintaining a small size of the intake air routing device.

Abstract: An adapter structure for mounting a boost pressure sensor according to the present invention, includes: an intake manifold mounting unit which is provided at an intake manifold and is formed with a penetrating hole at one side portion thereof to communicate with an inside of the intake manifold; a pressure sensor adapter which has a lower portion separably coupled to the intake manifold mounting unit, is made of a heat resistant or heat isolating material, and has a channel which is formed at one side portion thereof, transmits intake air pressure from the penetrating hole of the intake manifold mounting unit to the outside, and has an inner space of which a portion far from the penetrating hole of the intake manifold mounting unit is greater than a portion close to the penetrating hole of the intake manifold mounting unit; a boost pressure sensor which is mounted at an upper portion of the pressure sensor adapter so that a pressure detection portion is tightly coupled to an upper end portion of the channel o

Abstract: An engine-driven power generator apparatus, which includes, within a case, an engine and a power generator drivable with the engine, and in which an operation panel is provided on a front cover and an air intake louver for introducing air into the case is provided within the case, includes: a waterproof cover covering the operation panel and the air intake louver; an air guide passage of a labyrinth shape provided within the waterproof cover and communicating the outside of the waterproof cover with the air intake louver; and a brush-shaped water separation unit provided in the air guide passage and having a plurality of pins projecting in a direction intersecting flows of air in the air guide passage.

Abstract: A PCV anti-freezing apparatus for two-cylinder engine may include a PCV (Positive Crankcase Ventilation) nipple connected to an intake manifold of a two-cylinder engine, and an oil separator formed within the PCV nipple.

Abstract: An intake manifold is provided with a chamber member provided with an exhaust port and a chamber formed therein, a port member provided with an intake groove forming a ventilation passage bent so as to be communicated with the exhaust port and the chamber of the chamber member when the chamber member and the port member are welded together, and a cover member that covers the port member from a side opposite to the welded side between the chamber member and the port member. The intake groove has an outer wall surface opposing to the chamber member is formed with a reinforcing member so as to protrude from at least one of the port member side or chamber member side toward another one thereof, and the reinforcing member extends along an extending direction of the intake groove, the reinforcing member is welded to another reinforcing member protruding from another outer wall surface of the port member and chamber member, or from the port member and the chamber member.

Abstract: A vehicle is provided that includes an intake device including a throttle body that is connected to a rear-side surface of a cylinder head which constitutes a part of an engine body which is mounted on a vehicle-body frame in a state where an axis of a crankshaft is arranged along the longitudinal direction. A sufficient clearance can be ensured between the intake device and a member which is arranged above the throttle body. A posture of the throttle body 30 is set such that an axis C2 of an intake passage formed in the throttle body 30 extends in the rearward and downward direction.

Abstract: A fuel shroud assembly (100) into which fuel (118) is injected for mixing with an air stream (120) in a fuel manifold. The shroud assembly (100) comprises a plurality of parallel fuel scoops (102) each receiving the injected fuel (118). The fuel stream (118) flows through each scoop (102), exiting at an open scoop end (114A). The air stream (120) flows between scoops, creating a shear region proximate each scoop end (114A) where the fuel exits. The shear causes mixing of the air (120) and the fuel (118) streams, wherein the degree of mixing is not dependent on the momentum ratio of the air (120) or fuel (118) streams.

Abstract: An intake manifold flange system prevents leakage between joining portions of an intake manifold and a cylinder head while permitting stress relief. A flange body has an opening for receiving a distal end of the intake manifold and fastener hole openings for fixing the flange body to the cylinder head. Spaced annular grooves are arranged in an axial direction of the intake manifold. O-rings of a dimension to extend from the annular grooves and provide a pressurized contact with the distal end of an intake manifold. An annular groove is formed at a surface opposite a mounting portion of the cylinder head and an O-ring seal enables offsetting of the flange body from the cylinder head surface.

Abstract: The present invention relates to an air intake duct for an internal combustion engine that is capable of reducing the noise associated with the induction of air. The air intake duct includes an inlet and an outlet as well as an opening in a side wall located between the inlet and outlet. Mounted within this opening is a woven acoustic membrane. The acoustic membrane reduces inlet snorkel noise by dissipating pressure waves in the duct. The woven acoustic membrane is formed from a material that allows sufficient air flow into the air intake duct and also resists water penetration into the air intake duct.

Abstract: An air duct assembly supplies air from an air cleaner housing to an engine throttle and includes a first duct connected to the air cleaner housing and a second duct connected to the engine air intake. Open ends of the first and second ducts are spaced from one another and the second duct has a flared bell mouth at its open end. The second duct includes a sleeve that defines an attenuation chamber. A flexible bellows overlies the first and second ducts and the sleeve, and extends across the space between the first and second ducts to provide an airtight connection therebetween and flex during relative motion between the air cleaner housing and the engine air intake. A hydrocarbon adsorbing material can be housed within the attenuation chamber.

Abstract: A manifold, such as an intake manifold or a fuel injection manifold, for use in an internal combustion engine, as well as a method of operating such an engine, are disclosed. In at least one embodiment, the manifold includes an input end capable of being coupled at least indirectly to an air input device, first and second intake tubes linking the input end to first and second exit ports, respectively, and a first communication channel linking the first and second intake tubes. The communication channel has a first width that is substantially less than a second width of at least one of the first and second intake tubes, and the communication channel links upper portions of the first and second intake tubes, while lower portions of the intake tubes remain separated by a wall.

Abstract: An engine assembly may include an engine block, a first cylinder head, and an air intake assembly. The engine block may include a first bank defining a first set of cylinders. The first cylinder head may be fixed to the first bank and may include a first set of intake ports. The air intake assembly may include an intake air tube, a crankcase ventilation housing integrally formed with the intake air tube, and an oil separation assembly located within the crankcase ventilation housing. The intake air tube may be in communication with the first set of intake ports and an air source. The crankcase ventilation housing may have a wall at least partially defined by the intake air tube.

Abstract: An intake manifold is disclosed which has an upper shell portion having a first peripheral flange, a lower shell portion having a second peripheral flange, and at least one metallic post having a first plate and a second plate. The first and second peripheral flanges are friction welded and the first plate of the posts is friction welded to the upper shell portion and the second plate of the posts is friction welded to the lower shell portion. The upper and lower shells are made of a polymeric, or plastic, material. The metallic post is comprised substantially of aluminum or other suitable metals or alloys. The upper and lower shell portions define a cavity and a section of the post between the first and second plates traverses through the cavity.

Abstract: A composite intake manifold coupled to a V-engine is provided. The composite intake manifold includes a supporting member overmolded in an unsupported region of the composite intake manifold.

Abstract: An intake manifold includes a first piece and a second piece. The first piece includes a first branch pipe half portion and an intake air introducing portion. The second piece is connected to the first piece by vibration-welding and includes a second branch pipe half portion, an additional body, and a connecting portion. The second branch pipe half portion is connected to the first branch pipe half portion. The additional body is connected to the intake air introducing portion. The second branch pipe half portion and the additional body are spaced apart from each other at a predetermined distance. The connecting portion connects the second branch pipe half portion to the additional body.

Abstract: An air intake apparatus for an internal combustion engine includes an intake manifold adapted for being connected to an engine head, the intake manifold including therein an intake passage through which a stream of fuel-air mixture passes and a receiving portion formed at an inner circumferential surface of the intake passage, the receiving portion being at a downstream side of stream of fuel-air mixture; a valve open/close mechanism including a cartridge made of resin, an open/close valve accommodated in the cartridge, and a shaft for rotating the open/close valve, the cartridge defining a first clearance with the receiving portion and defining a second clearance with the engine head; and a first elastic member arranged between the engine head and the cartridge of the valve opening/closing mechanism for elastically retaining the cartridge in an upstream direction of the stream of fuel-air mixture.

Abstract: A vehicle has a frame, at least one front wheel, at least one front suspension assembly, at least one rear wheel, and at least one rear suspension assembly, a seat, a steering assembly, an engine, and an air intake system fluidly communicating with the engine. At least one of the front and rear suspension assemblies includes an air spring. An air compressor selectively supplies air to the at least one air spring. An inlet of the air compressor fluidly communicates with the air intake system. During operation of the air compressor to supply air to the at least one air spring, the air compressor draws air from the air intake system and simultaneously supplies the air to the at least one air spring. A control unit is electrically connected to the air compressor for controlling an operation of the air compressor.

Abstract: Provided is an intake system that enables extension of an intake air introduction pipe without increasing the external dimension of the intake system. The intake system comprises: a plurality of branch pipes (27-30) which are arranged one next to the other and communicate at downstream ends thereof with a plurality of intake ports (14) provided in an engine (10), respectively, each branch pipe extending from the downstream end thereof to an upstream end thereof in a curved manner; an intake chamber (26) communicating with the upstream ends of the branch pipes; and an intake air introduction pipe (25) having a downstream end communicating with the intake chamber, wherein the intake air introduction pipe has a section that extends in a space defined between the branch pipes and the engine in a direction of arrangement of the branch pipes.

Abstract: A vehicle has a frame, at least one front wheel connected to the frame, at least one front suspension assembly connecting the at least one front wheel to the frame, at least one rear wheel connected to the frame, and at least one rear suspension assembly connecting the at least one rear wheel to the frame. At least one of the at least one front and at least one rear suspension assemblies includes an air spring. A seat is connected to the frame. An engine is connected to the frame and is operatively connected to at least one of the wheels. An air compressor is connected to the frame and fluidly communicates with the at least one air spring for supplying air to the at least one air spring. A control unit is electrically connected to the air compressor for controlling an operation of the air compressor.

Abstract: An intake assembly for an internal-combustion engine includes an intake duct for each cylinder, which communicates with an airbox that includes a filtering element. Each intake duct communicates with the airbox by a respective throttle body. A monitoring channel connects the intake ducts together and is configured for perturbing in a negligible way the dynamics of the fluid inside the intake ducts. Associated to said monitoring duct are sensors for monitoring the pressure inside the monitoring duct and designed to send signals indicating the value of pressure of the fluid taken in by the engine to an electronic control unit.

Abstract: A vehicle air intake mechanism comprises an air intake duct having an inlet end opening which opens in an axial direction, and a flow-guiding member having an outer surrounding wall that defines a flow channel in fluid communication with the inlet end opening. The outer surrounding wall has first and second end portions that extend in the axial direction. The first end portion of the outer surrounding wall surrounds an inlet end portion of the air intake duct. The first axial end of the outer surrounding wall defines a first end opening that is in fluid communication with the flow channel and that opens in the axial direction. The inlet end opening is disposed between and is spaced apart from first and second axial ends of the outer surrounding wall in the axial direction.

Abstract: An intake manifold for a multiple-cylinder internal combustion engine has a collective part forming an intake gas distribution chamber, and a branch part forming branch intake passages. The collective part includes a first section defining a first space joined to a second section defining a second space. The first and second spaces define the intake gas distribution chamber. The first and second sections have corner parts, the second section being provided with a guide wall covering the inside surfaces of the corner parts. The guide wall has a guide surface and opposes the intake gas inlet, the intake gas distribution chamber being defined between the intake gas inlet and the guide wall. The guide wall and the corner parts define a back space communicating with the intake gas distribution chamber.

Abstract: An intake manifold (2) of comburent air is provided for an internal combustion engine (1) with a recirculating conduit (60) of exhaust gases. The intake manifold (2) includes a first inlet mouth (213) of the comburent air, a second inlet mouth (214) in communication with the recirculating conduit (60) of the exhaust gases, and a plurality of outlet mouths (201), having a wall (7) positioned in front of each of the outlet mouths (201) and suitable for dividing the internal volume of the intake manifold (2) into two chambers (215, 204), the first chamber (215) being placed in communication with the first inlet mouth (213) and the second inlet mouth (214) and the second chamber (204) being placed in communication with the outlet mouths (201), the wall (7) defining an opening (70) suitable for placing the first chamber (215) and the second chamber (204) in communication.

Abstract: An apparatus and method for customizing the sound emitted from an automotive vehicle during operation. Specifically, the vehicle operator uses a controller to vary the sound emitted from the engine exhaust and intake or engine compartment sounds during vehicle operation. In addition, the operator can control the sound level, sound type and sound aspect in the vehicle interior or passenger compartment and the vehicle exterior. Further, the apparatus uses an active sound control system, such as those using microphones and speakers, to customize and/or tune the sound emanating from the vehicle.

Abstract: An gas directing/exhaust system and method are provided that has different embodiments. In some embodiments, the gas directing mechanism has a first pathway and a second pathway. In other embodiments, the gas directing mechanism has a second pathway and one or more first pathways located inside of the second pathway. In other embodiments, the gas directing mechanism has the first and second pathways and a third pathway inside of the second pathway.

Abstract: An intake manifold M for an internal combustion engine has two or more structural members P1 to P3 including a first structural member P1 integrally provided with an inlet flange 22 to which a throttle device 4 is connected, and an outlet flange 40 to be joined to a cylinder head 2 provided with intake ports 5. The first structural member P1 is provided integrally with an inlet part 21 forming at least part of an inlet passage 11 and including the inlet flange 22. The outlet flange 40 is formed integrally with the inlet part 21 so as to extend across a direction in which the inlet passage 11 extends, two bolts 451 and 452 for fastening the outlet flange 40 to the cylinder head are disposed respectively on the opposite sides of the inlet passage 11. The rigidity of the inlet flange and fastening of the outlet flange to the cylinder head by fastening means improves a vibration reducing effect on a throttle device joined to the inlet flange.

Abstract: An air intake system for an off-road vehicle includes an intake conduit upstream of a segmented debris removal device and a mail filter element. A baffle is disposed in the intake conduit and extends into the incoming air stream to avoid swirl in the air stream and provide more even air flow distribution into the segments of the segmented debris removal device. The baffle may have two generally parallel elements spaced from one another to reduce mixing of air regions separated by the baffle. The baffle reduces or eliminates vortices that adversely affect air flow into the segmented debris removal device.