Abstract: The present invention has an object to provide a vertical multi-cylinder diesel engine capable of conveniently protecting a common rail and its parts. On the assumption that a width direction of a cylinder block (2) is taken as a horizontal direction, when arranging the common rail (3) horizontally lateral of the cylinder block (2), there is disposed above the common rail (3) a passage forming means (23) which is the alternative of an intake air distributing means (5) and an exhaust air converging means (22). The passage forming means (23) above the common rail (3) may be formed into a box-shaped structure with no branch pipe. Further, an engine cooling fan (4) may be arranged in front of the common rail (3) so as to pass cooling air below the passage forming means (23) above the common rail (3).

Abstract: A suction system for an internal combustion engine has a device for avoiding the ingress of water and includes a switch-over valve between a primary intake line and a secondary intake line. To provide improved protection against water ingress, the switch-over valve is controlled so that during off-road travel there is a change-over from a primary air intake to a secondary air intake.

Abstract: An example plastic intake manifold is assembled with an inner shell received within an outer shell. The method of assembling the outer shell to the inner shell comprises a localized thickness that defines a desired laser weld joint along which laser energy is utilized to form the desired joint between the outer shell and the inner shell. The method also provides for completing a desired weld around an interfering protrusion on an outer surface of the outer shell.

Abstract: A flow guide element is provided for guiding a flow of a fluid medium which is particularly suitable for use in an intake tract of an internal combustion engine. The flow guide element includes a flow tube having an elbow for diverting the flow. In the region of the elbow there is situated, in this case, at least one flow baffle having at least one deflector. The deflector is penetrated by an opening, going right through the flow baffle, in at least one area.

Abstract: An air intake duct arrangement for an internal combustion engine in which a cylinder head is fixed on a body shell of a motor vehicle via a damping element. The cylinder head is closed by a set of timing gear cases, and the intake duct includes an intermediate portion connected to an upstream portion connected to a heat exchanger and to a downstream portion supplying air towards an intake manifold. The upstream and downstream portions include a fixing mechanism configured to co-operate with the intermediate portion. The intermediate portion is integrated in the timing gear case of the engine.

Abstract: A vehicle is capable of preventing the temperature of the fuel injector from becoming high due to engine heat and also facilitating installation and maintenance of the fuel injector. The vehicle includes a head pipe, a body frame coupled with the head pipe and extending downward to the rear, an engine arranged below the body frame, a cylinder axis of the engine being oriented substantially horizontal, an intake passage for supplying air to the engine, and a fuel injector mounted on a midsection of the intake passage for supplying fuel to the engine. At least a portion of the fuel injector is arranged forward relative to a centerline of the intake passage when viewed from the side of the vehicle body.

Abstract: The present invention utilizes a single shaft with cam-actuated control valves and one linear solenoid for control of air flow control vales in the air induction system for a V-type engine. According to various exemplary embodiments of the present invention, the single shaft and one sensor are utilized to activate all control valves. Additionally, the present invention can also be used in in-line engines. Advantageously, the present invention utilizes one moving shaft and sensor to activate all control valves on both sides of the intake manifold without restricting air flow by locating the shaft in the middle of the manifold—lower housing. Further, the control valves are not attached with screws, thus eliminating a tolerance stack-up at assembly problem. The air induction sub-system can be manufactured with metals or plastic, or any combination thereof.

Abstract: An intake manifold is disclosed. The intake manifold includes a first chamber in fluid communication with a PCV line and disposed generally upstream of a second chamber. The chambers are designed to provide a long flow path for the moisture laden PCV gas and to help reduce the introduction of moisture or fluids into the second chamber. This helps to prevent the ingestion of moisture or fluids by the combustion chambers of engine. An optional fluid blocker can also be used to trap fluids and help prevent those fluids from entering a cylinder port.

Abstract: Disclosed herein is a housing wheel engine that has one wheel shaped combustion housing, the housing wheel engine can hold several pistons which's both sides working inside the combustion housing. The housing wheel engine transmits its rotating movement directly to the driveshaft by planetary gearsets. A four strokes time mechanism provided by planetary gearsets.

Abstract: In a device for mechanically closing a separation point between an air intake duct associated with a drivers cap and a connecting duct associated with a chassis supporting an internal combustion engine of a motor vehicle, wherein a locking mechanism is provided which is operable by a tilting of the driver's cab about the driver's cab pivot axis into, or out of, its drive position, the locking mechanism comprises a first locking element supported on the driver's cab and a second locking element associated with an air filter mounted on the chassis and at least one of the locking elements comprises a control cam, which can be moved into engagement with the other locking element by a pivoting of the driver's cab into its drive position.

Abstract: A motorcycle includes an engine having a substantially vertical cylinder assembly and disposed in a front half of a vehicle body frame, an inverted type rear cushion unit disposed behind the engine in substantially vertical posture, an air cleaner disposed behind the rear cushion unit and below a rider's seat, and an intake air passage connecting air an intake port formed in a rear portion of the cylinder assembly and the air cleaner each other. The intake air passage, i.e., connecting pipe, is arranged so as to be overlapped with an upper portion of the rear cushion unit in a side view of the motorcycle. A cross section shape of the connecting pipe is a vertically long shape in which its longitudinal size is greater than its lateral size.

Abstract: The present invention provides an air intake assembly including a first portion defining a first chamber through which airflow passes. The first portion is coupled to a first throttle member to allow communication from the first chamber to the first throttle member. The air intake assembly also includes a first filter element coupled to the first portion and positioned upstream of the first chamber, and a second portion defining a second chamber through which airflow passes. The second portion is coupled to a second throttle member to allow communication from the second chamber to the second throttle member. The air intake assembly further includes a second filter element coupled to the second portion and positioned upstream of the second chamber, and a conduit coupling the first and second portions. The conduit allows communication between the first and second chambers at a location downstream of the first and second filter elements.

Abstract: An intake port for a 4-cycle engine includes an intake port base integrally formed with a cylinder head, and an intake port forming member that forms an intake port together with the intake port base. The area of the cross section of the intake port orthogonal to a centerline of the intake port is substantially uniform from an open intake side thereof toward a combustion chamber. The angle made by the centerline of the intake port and an intake valve shaft is larger than 90° from a viewpoint of the intake valve. Thereby, the 4-cycle engine can output high power with the intake port shape, as formed with above mentioned configuration, that reduces intake resistance and that uses simple design molds. More specifically, the engine can reliably prevent condensed fuel from remaining in the intake port to avoid incomplete combustion of gas.

Abstract: An air induction housing having a perforated wall which simultaneously provides ample air entry into the air induction housing and excellent intake noise attenuation. The size, number and arrangement of the perforations is selected such that ample airflow is provided and audibility of intake noise is minimized, based upon simultaneous optimization of: providing a plurality of perforations which collectively have an opening size that accommodates all anticipated airflow requirements; sizing each of the perforations such that the airflow demand involves an airflow speed through each perforation that is below a predetermined threshold at which perforation airflow noise is generated; and arranging the perforation distribution in cooperation with configuring of the air induction housing to provide a highest level of intake noise attenuation.

Abstract: An intake manifold system including an intake manifold and a compressed natural gas (CNG) fuel injector located between an inlet and an outlet of the intake manifold. The CNG fuel injector includes a housing, an inlet, an outlet, a seat, a closure member, and a nozzle. In a preferred embodiment, the inlet and outlet communicate a flow of gaseous fuel regulated by the closure member. The gaseous fuel passes through the seat, which is secured to a rim surface of a retainer portion of the nozzle, and into a flow passage that further communicates the flow of gaseous fuel into one or more flow channels. The orientation of the flow channels within the nozzle greatly affects the discharge pattern and mixing characteristics of the gaseous fuel within an intake manifold. A method of metering gaseous fuel in an intake manifold having a gaseous fuel supply coupled to a fuel injector is also described.

Abstract: A transparent component portion includes a first weld surface and a first taper locking surface formed opposite from the first weld surface. An absorbing component portion includes a second weld surface and a second taper locking surface formed opposite from the second weld surface. The first and second taper locking surfaces cooperate to force and lock the first and second weld surfaces into abutting engagement for laser welding.

Abstract: An intake regulating system of an engine equips with an intake regulating-device connected with a breather hose for drawing the oil vapor and the leaked gases from the crankcase of the engine, thereby to mix with outside air to feed into the engine for re-combustion. The intake regulating-device comprises a housing and a pressure-sensing valve. The housing has an air inlet hole, an air outlet hole, and a slender hole. The air outlet hole and the slender hole both are in communication with the air inlet of engine via an intake manifold for generating a pressure difference thereby to drive the pressure-sensing valve. Preferably, the intake regulating-device provides a pair of regulating knobs for adapting the pressure-sensing valve with various intake volumes of an engine.

Abstract: A model-based estimation of mass airflow is provided which provides an accurate estimation of mass airflow without introducing undesirable time delays characteristic of filtered mass airflow signals.

Abstract: An air intake device includes an inner pipe member having a substantially cylindrical shape and defining therein an air intake passage by a wall portion of the inner pipe member, and an outer pipe member which surrounds a periphery side of the inner pipe member to define therebetween a space. The air intake passage communicates a surge tank with an atmosphere intake port through which air is introduced into the surge tank. The wall portion of the inner pipe member has at least one sound transmission portion through which sound is more readily transferred than other portions of the wall portion. The space has one end which is opening and positioned at a side of the atmosphere intake port, and the other end which is closed and positioned at a side of the surge tank.

Abstract: An air intake device of an internal combustion engine which is capable of enhancing the air intake efficiency and reducing the size is provided. The internal combustion engine includes a cylinder head, an intake manifold provided at a longitudinal side surface of the cylinder head, and a head cover provided on the cylinder head. The air intake device of the internal combustion engine includes an air cleaner including an upper casing and a lower casing detachably coupled to each other and incorporating a filter element, an atmospheric air introduction pipe for introducing air to the air cleaner, and an intake pipe extending from the air cleaner to the intake manifold.

Abstract: An engine equipped with an air-intake device for a personal watercraft, includes a cylinder head cover attached to an upper surface of a cylinder head, a plug cap with ignition coil configured to protrude upward from an upper surface of the cylinder head cover; and an air box for the air-intake device that is disposed above the cylinder head cover and is provided on a lower surface thereof with an air inlet that opens to be opposite to the upper surface of the cylinder head cover. The air box is disposed in such a manner that the lower surface of the air box is opposite to the upper surface of the cylinder head cover and a gap is formed between the lower surface of the air box and the upper surface of the cylinder head cover so as to form an air flow in the vicinity of the plug cap with ignition coil that is directed to the air inlet of the air box.

Abstract: An internal combustion engine intake device is provided for an internal combustion engine such that intake device that can reduce the vibration of the throttle chamber of an internal combustion engine. The intake device has an intake air collector, a vacuum tank and a first air induction pipe. The vacuum tank is arranged closely adjacent to the intake air collector. The first air induction pipe extends upstream from the intake air collector in such a manner as to be closely adjacent to the vacuum tank. Preferably, the first air induction pipe is integral with the intake air collector and the vacuum tank.

Abstract: A multicylinder engine intake system includes: first and second throttle bodies; bypasses provided in the first and second throttle bodies and having downstream ends opened to intake paths on downstream sides of throttle valves; and a common bypass control valve which opens and closes the bypasses. The bypass control valve is mounted on the first throttle body. Downstream ends of the bypasses opened in the first and second throttle bodies are formed as throttle holes. The diameter of the throttle hole on the side of the first throttle body is smaller than the diameter of the throttle hole on the second throttle body. Thus, it is possible to equalize amounts of first idling air supplied to a plurality of cylinders irrespective of arrangement of the cylinders in an engine even if lengths of a plurality of bypass downstream paths are not equal to each other, while the bypass control valve is mounted on any of the throttle bodies.

Abstract: A vehicle having moving funnels separated from stationary funnels that suppresses any decrease in intake efficiency. The moving funnels are arranged on an intake side of the stationary funnels to lead air to an engine. A funnel holding section holds the moving funnels and includes opened holes. The moving funnels are moved straight between separated positions in which openings of the moving funnels are separated from openings of the stationary funnels, and abutment positions in which the openings of the moving funnels abut against the openings of the stationary funnels. The opened holes pass air on an upstream side to a downstream side.

Abstract: A tube for directing fluid along a path that includes a bend. The tube comprising a conduit having a first aperture, a second aperture, and a bend portion adjacent the second aperture. An outer bend surface is integrally formed as part of the conduit to at least partially define the second aperture. An insert includes at least a portion of an inner bend surface and is disposed at least partially within the second aperture such that the outer bend surface and the inner bend surface cooperate to at least partially define the bend.

Abstract: In a railroad locomotive for operation in low ambient temperature conditions with the locomotive having an engine which includes a cooling system using a coolant liquid, a coolant liquid containment system is provided and includes a containment tank, an inlet port in fluid flow communication with an outlet from the engine cooling system and with the interior of the containment tank, an inlet valve for controlling the flow of coolant liquid through the inlet port, an outlet inlet port in fluid flow communication with the interior of the tank for discharge of the coolant liquid from the containment tank, an outlet valve for controlling the flow of coolant liquid from the containment tank, a sensor for monitoring a parameter indicative of the temperature of coolant liquid in the engine cooling system and generating a signal indicative of the temperature of the coolant liquid and a control device for receiving information indicative of the temperature of the coolant liquid and in communication with the inlet valv

Abstract: In a multi-cylinder internal combustion engine for vehicles, having a plurality of air ducts leading to the cylinders and an associated engine control device situated in a housing, the air ducts are combined into a single unit, on the exterior of which the engine control device housing is situated on its lower part which forms the underside, and the lower part of the engine control device housing simultaneously forms a part of the air ducts.

Abstract: An expandable manifold comprises an expansion chamber defined by a resilient surface. Intake is provided by a conduit extending into the chamber. As reverse impulses resulting from the closing of an intake valve enter the expansion chamber from the output end of the chamber, the volume of the chamber increases as the resilient surface expands. The reverse impulses propagate along the inner surface of the resilient surface toward a void defined by the outer surface of the conduct and the inner surface of the resilient surface. When the intake valve reopens, the reverse impulse flow is redirected and combined with intake flow from the source of fuel/air. The reverse impulses are redirected within and proximate the void. Energy associated with the reverse flow is redirected and combined with the forward flow to improve overall engine performance.

Abstract: An improved snowmobile component layout structure includes an engine provided at front portion of the vehicle body, a cylinder head of the engine is inclined by an angle ? rearwards from a vertical axis, a steering shaft extends forwardly of the engine, and an air intake system, including an air cleaner, is provided at the rear side of the engine. In addition, a rider seat is provided on the rear side of the engine, and an elongated fuel tank is provided below the seat. The air cleaner has an improved disposition between the fuel tank and the engine. The inventive configuration narrows the spacing between an engine and a rider and concentrates mass to enhance turning performance.

Abstract: To secure enough of an amount of intake air and an increase in a flow rate in a balanced manner to improve a filling efficiency for increasing power in an internal combustion engine. A combustion chamber is formed between a cylinder block and a cylinder head opposite to a top portion of a piston slidably fitted in the cylinder block. An intake path extends from an inlet pipe, separately or integrally, connected to the cylinder head to the cylinder head and is in communication with an intake valve port that opens to the top surface of the combustion chamber to be opened/closed with the intake valve. Intake paths are provided with a pair of throttle portions arranged with an interval in an air flow direction of the intake paths and an expanding portion positioned between the throttle portions.

Abstract: To provide an intake system of a motorcycle, which is capable of attenuating intake noise efficiently, and facilitating arrangement of resonators. An air cleaner includes an air cleaner case having an element and an expansion chamber with an intake passage connected thereto. Intake ducts introduce outside air into the air cleaner case. Resonators are provided on the expansion chamber and intake ducts, respectively.

Abstract: An air-intake apparatus includes a surge tank, a plurality of intake manifolds, a throttle, and a connecting pipe portion. A plurality of cylinders of an internal combustion engine includes a predetermined group of cylinders, a phase difference in combustion timing between which is an integral multiple of a combustion interval between the plurality of cylinders. The integral multiple is equal to or larger than two times. The plurality of intake manifolds includes a group of intake manifolds, each of which is connected to corresponding one of the predetermined group of cylinders. The connecting pipe portion connects the group of intake manifolds.

Abstract: An air intake system for an engine has an air filter, a throttle body, and a tube coupled to the air filter at a first end and the throttle body at the second end. In this regard, the air intake elbow transitions from a circular air inlet to an oval air outlet. Further, the air intake elbow redirects the airflow radially ninety degrees to connect the circular air inlet to the oval air inlet of the throttle body. Furthermore, the air intake elbow transitions in such a way as to accelerate the air through the air intake elbow and ensure that the air is delivered to the throttle body without substantial turbulence.

Abstract: An intake duct structure having an intake path extending forwardly from a cleaner box, penetrating through an area near a head pipe of a vehicle body frame, and opening at a front end portion of a front cowl. During low speed operation of the engine, an intake valve closes a main intake path MR from a front end intake port and opens a sub-intake path SR from a lower portion intake port. On the other hand, during high speed operation of the engine, the intake valve opens the main intake path MR and closes the sub-intake path SR. The lower portion intake port opens forward of a head pipe inside a front cowl and obliquely downwardly toward the rear. With this arrangement, entry of rainwater into the intake path can be minimized during low speed operation of the engine.

Abstract: An air duct orifice includes an adapter pipe inserted in and attached to an end portion of an air duct connected to an engine side; an orifice pipe protruding from an outer surface of the adapter pipe; and an orifice cover coupled to an upper opening formed on the orifice pipe. The orifice pipe is disposed in a receiving opening formed on the air duct. The orifice pipe has engaging jaws on two side surfaces, and the orifice cover has combining holes on two side surfaces. The engaging jaws are engaged with the combining holes. The side surfaces of the orifice pipe without engaging jaws and the side surfaces of the orifice cover without combining holes are spaced apart from each other to form a radiation path of noise. The air duct orifice further includes a small resonator mounted to a lower side surface of the air duct.

Abstract: In an internal combustion engine wherein an intake manifold for performing intake for the front and rear cylinders is placed in a narrow and high-temperature V-bank, to provide a structure of an intake device that does not allow an overall height of the internal combustion engine to become high. An intake structure of a V-type internal combustion engine includes a throttle body having a throttle opening sensor on one end of a throttle valve shaft that is provided so that an intake passage of the throttle body can extend in a crankshaft direction between front and rear cylinders. The center of the intake passage of the throttle body is disposed to be shifted to one cylinder side, and the throttle opening sensor is placed on a side where the center of the intake passage of the throttle body is apart from the cylinder.

Abstract: According to one aspect of the invention, there is provided an intake device for an internal combustion engine, including a gas passage unit defining therein a secondary gas supply passage for supplying a secondary gas to an intake of the engine, and a thermal insulator disposed over at least one side of the gas passage unit so as to thermally insulate the secondary gas supply passage.

Abstract: A multi-cylinder engine wherein a direction in which a crank shaft spans is a front and rear direction and a widthwise direction of a cylinder head (1) perpendicular to the front and rear direction is a lateral direction, the multi-cylinder engine comprising the cylinder head (1) which has one lateral side to which an intake-air distributing passage wall (2) is attached and has the other lateral side to which an exhaust-gas converging passage wall (3) is attached, an EGR cooler being interposed between an exhaust-gas converging passage and an intake-air distributing passage. In this multi-cylinder engine, the EGR cooler (4) spans in the front and rear direction laterally of a cylinder block (5) and the exhaust-gas converging passage wall (3) is positioned just above the EGR cooler (4).

Abstract: An intake structure for internal combustion engine includes an intake passage which is communicated with a combustion chamber of the internal combustion engine and through which air to be supplied to the combustion chamber flows; and a valve which is provided in the intake passage and which controls the airflow in the intake passage. The intake passage has a recess which is formed in the inner wall face of the intake passage and in which the valve is arranged; and a groove that is connected to the recess, at a substantially center position of the recess in a width direction of the recess, and that extends from the recess toward the downstream side of the intake passage.

Abstract: A duct main body is formed into a hollow tubular shape having in an interior thereof an intake passageway for introducing outside air into an internal combustion engine by connecting integrally a plurality of divided bodies such as a first divided body and a second divided body which are formed of a thermoplastic resin and has in a duct wall of the second divided body an opening which establishes a communication between the inside and outside of the intake passageway. An air-permeable member is insert molded in the second divided body in such a manner as to cover the opening. The air-permeable member has on an outer edge thereof a joining portion which is impregnated with the thermoplastic resin.

Abstract: A pipe fitting assembly is provided for an intake manifold defining a generally cylindrical bore and having at least one tab portion defining at least one groove. The pipe fitting assembly includes a fitting member having a generally cylindrical portion configured for insertion into the bore such that the fitting member is rotatable between a first and second position. At least one flange is formed on the fitting member and is operable to engage the at least one groove when the fitting member is rotated from the first position to the second position, thereby preventing the removal of the cylindrical portion from the bore. A tube member is also provided having a first end mounted with respect to the fitting member and a second end mounted with respect to the intake manifold. The tube member is operable to retain the fitting member in the second position.

Abstract: A separator system has a plurality of separator stages (11, 12, 13) and operates to remove particulates from air, particularly in the inlet to an engine. Each stage includes a plurality of side-by-side inertial separators (26) through which the air flows and by which particulates are removed. Each stage (11, 12, 13) produces a pressure drop and the additional total pressure drop produced by each stage after the first is less than the additional total pressure drop produced by the preceding stage in an upstream direction. This allows particulates to be removed by the separator stages (11, 12, 13) alone without the use, in normal operation, of a barrier filter (14).

Abstract: An internal combustion engine intake duct device is provided with an intake duct body and an air flow directing structure. The intake duct body has an inlet, a left outlet and a right outlet with an intake air passage formed in the intake duct body for supplying intake air from the inlet to left and right outlets. The inlet is disposed on an opposite side of the intake duct body from the left and right outlets and laterally between the left and right outlets in a top plan view. The air flow directing structure is arranged in the intake duct body to direct a flow of intake air entering from the inlet toward the left and right outlets. The air flow directing structure includes a first sound reflecting part serving to block sound from the left intake pipe and a second sound reflecting part serving to block sound from the right intake pipe.

Abstract: An intake manifold including a collecting pipe and a plurality of branch pipes comprises a single gas intake port, a gas outlet port opening into each branch pipe, and a gas passage extending to be divided into more than one branch passages from the gas intake port to each gas outlet port. The gas passage is configured so that the branch passages are equal in pressure loss which will be generated between the gas inlet port and each gas outlet port, and the gas passage extends to be branched in stages from the gas inlet port to each gas outlet port, forming a tournament-form configuration which is symmetrical about the gas inlet port. The collecting pipe and each branch pipe are integrally molded of resin. The gas inlet port and the gas passage are provided in a projecting section integrally molded with the branch pipes.

Abstract: An intake manifold assembly includes a housing, a shaft assembly, and an intake insert. The shaft assembly has a metal shaft with bearings located at each end to provide hard mounting surfaces for the shaft assembly when assembled in the housing. The bearings support the shaft within the housing and allow the shaft to freely rotate. Bushings are spaced along the shaft to absorb vibrations and assist is providing a low friction surface for shaft assembly rotation. Journal pockets in the housing and in the intake insert surround the bushings. Isolators located within the journal pockets and housing surround the bushings and assist in dampening vibrations.

Abstract: An object of the present invention is to provide a duct having a simple structure and capable of suppressing occurrences of an intake noise and a dropping-out of an adsorbent, and to a process for producing the same capable of producing easily. The present duct (1) is one comprising a duct body (2) in tubular, and the duct body (2) is comprised of a nonwoven fabric in which an adsorbent (3) in at least one type among granular, powdery and fibrous is disposed as an intermediate layer. The duct body (2) is preferably composed of a first fiber layer (7) located on an inner circumferential side, a second fiber layer (8) located on an outer circumferential side, and the adsorbent (10) is disposed between the first fiber layer (7) and the second fiber layer (8).

Abstract: The assembly (10) for admitting combustion air to the engine of a motorcycle comprises: an air filter (12); a housing (11) for mounting at the top portion of the motorcycle and forming a support for the air filter (12); an air inlet module (13) fitted to the housing and including at least one movable shutter (131, 131?); control means for controlling the movements of the shutter (131, 131?); and assembly means (17, 171-174) for assembling the assembly at the top portion (21) of the motorcycle. The air filter (12) is generally annular and subdivides the inside volume of the housing (11) into a radially inner chamber and a radially outer chamber. The radially inner chamber is fed with air through the air inlet module (13), while the radially outer chamber forms, around the air filter (12), a chamber for stabilizing the flow of air downstream from the filter.

Abstract: An air intake apparatus configured to combine air filtered separately through a plurality of air cleaners and lead it to a single throttle body suppresses or prevents variation in the pressure of airflow introduced from a plurality of intake paths to the single throttle body. Outside air is introduced to the plurality of air cleaners by a single air cleaner inlet. The air cleaner inlet has a chamber of a predetermined capacity which has a single intake duct, and a plurality of branching passages which branch off from the chamber into the same number as there are air cleaners and are connected to the separate air cleaners.

Abstract: An apparatus (100) for a gaseous fuel injection system includes a first chamber (15b) connectable with a source of gaseous fuel at a required inlet pressure, a second chamber (15c) connectable with an engine or other apparatus so as to supply gaseous fuel thereto and further connected with said first chamber (15b) through a controllable valving means. A flow control means (25) has an inlet connectable with the first chamber (15b) and an outlet connectable with an orifice (25b) for controlling the pressure at the outlet of the flow control means (25) to be no more than 53% of the inlet pressure.

Abstract: An air intake apparatus for an internal combustion engine includes an air intake manifold that has a plurality of branch pipes that are connected to an internal combustion engine and has a collecting pipe to which a throttle body is connected, in which an air intake quantity that is taken into the internal combustion engine is adjusted using a throttle valve of the throttle body, and in which a fuel injection quantity is adjusted in accordance with the air intake quantity. In this air intake apparatus for an internal combustion engine, an air flow meter that detects a quantity of air that is taken into the internal combustion engine is provided in each branch pipe of an air intake manifold.