Abstract: A throttle body for an engine or fuel cell of a vehicle is provided. The throttle body comprises a cylindrical housing comprising a first open end extending to a second open end defining an inner wall having an inner surface. The throttle body further comprises a moveable blade valve movably disposed on the inner wall and arranged to regulate air to the engine during operation of the vehicle. The moveable blade valve has an outer surface. The throttle body further comprises a dual-phase thermal composite coating (TCC) disposed on one of the inner surface of the inner wall and outer surface of the moveable blade valve for enhanced thermal conductivity and reduced deposit accumulation on the inner surface and the outer surface. The dual-phase TCC comprises a first material comprising between 10 wt % and 90 wt %, and a second material comprising between 10 wt % and 90 wt % of the dual-phase TCC. The dual phase TCC has a contact angle of between 100° and 160° and a thermal conductivity of at least 0.3 W/mK.

Abstract: A throttle valve includes a housing, an electric motor and an insert. The electric motor is accommodated in the housing and drives opening and closing of an air flow passage of the throttle valve. The insert is partially enclosed in the housing and includes an electrically conductive insert body at least partially accessibly exposed from the housing, and an electrically conductive electric motor connector. One end of the motor connector is electrically connected to the insert body, and the other end thereof is electrically connected to the electrically conductive housing of the electric motor.

Abstract: A valve having a metal insert with a fluid passage formed in the metal insert. A composite valve body is disposed at least partially around the metal insert and having at least one port in fluid communication with the fluid passage with the metal insert. A valve member is partially disposed in the metal insert and operable to control the fluid flow through the fluid passage of the metal insert and parts of the valve body.

Abstract: A transmission mechanism includes: an intermediate shaft secured to a support portion provided in a valve body of an electric throttle valve and disposed in parallel to a motor shaft and a valve shaft; and an intermediate gear rotatably disposed at the intermediate shaft, in which the intermediate gear has a first intermediate gear engaged with a motor gear secured to the motor shaft and a second intermediate gear engaged with a valve gear secured to the valve shaft, the first intermediate gear and the second intermediate gear are integrally configured to be aligned in an axial direction of the intermediate shaft, a hemispherical recessed portion recessed upward around an axial center of the intermediate shaft is formed at a lower end portion of the intermediate gear, and a projecting portion projecting upward in a hemispherical shape around the axial center of the intermediate shaft and supporting the recessed portion is formed in a surface of the support portion facing the recessed portion of the intermedia

Abstract: A liquid discharge device to discharge a liquid material stirred near a metering chamber, an application device and an application method using the application device. A liquid discharge device includes a storage unit including a storage container storing a liquid material, and a stirrer drive mechanism; a discharge unit including a metering chamber to be filled with the liquid material, a plunger sliding in close contact with an inner peripheral surface of the metering chamber, a nozzle in communication with the metering chamber, and a switching valve between a first position at which the storage container and the metering chamber are communicated with each other, and a second position at which the metering chamber and the nozzle are communicated; and a connection flow path through which the storage container and the metering chamber are communicated, The stirrer drive mechanism is separable from the storage unit.

Abstract: An automobile exhaust valve is provided, in particular for an automobile combustion engine and more particularly for an embodiment of an implementation of a gas passage shutter. A valve body defines a gas circulation passage along a longitudinal axis and is composed of only two identical half-bodies whose axes, parallel to the longitudinal axis, are offset radially, in order to define inside the valve body two seats on which sides of the gas passage shutter come into flat contact in a closed position. An exhaust pipe equipped with such a valve, and a vehicle equipped with such an exhaust pipe, are also provided.

Abstract: A throttle device includes a throttle body, a throttle valve, a throttle shaft, a throttle gear, and a coil spring. A cylindrical spring guide disposed in the coil spring is provided on the throttle body. A full-close stopper and a full-open stopper arranged at a prescribed interval in a circumferential direction are provided on the spring guide. A fully closed opening regulation lever includes a full-close abutment configured to abut against the full-close stopper and full-open abutment configured to abut against the full-open stopper.

Abstract: The present invention relates to a damper door (1) having an axis of rotation (3), a first face (5), and a second face opposite the first face (5), said first (5) and second faces of the damper door (1) defining a plane, said damper door (1) comprising: a rotation shaft (9) projecting from each side of the plane defined by the first (5) and second faces of the damper door (1), and at least one side wall (11) having a flat surface arranged radially with respect to the rotation shaft (9), characterised in that the rotation shaft (9) has, in the plane of the at least one side wall (11), a semi-elliptical shape (13) extending over the side wall (11) and comprising a large diameter (G1) coinciding with the axis of rotation (3) of the damper door (1) and a small radius (P1) parallel to the plane of the at least one side wall (11).

Abstract: A throttle body for an engine includes a throttle body housing, a throttle body plate supported by and rotatable within the throttle body housing, and a tab carried by the throttle body housing and movable between a first position in which the tab is in direct contact with the throttle body plate to prevent rotation of the throttle body plate and maintain the throttle body plate in a closed position, and a second position in which the tab is not in direct contact with the throttle body plate to permit rotation of the throttle body plate.

Abstract: Embodiments of a gaseous or dual fuel electronic pressure regulation system (EPRS) for a multipoint fuel injection engine are described herein. Additionally, embodiments of a method for controlling the EPRS are provided. In particular, the EPRS employs an electronic pressure regulator (EPR) capable of accurately determining and controlling the mass flow of gaseous fuel into a fuel rail so as to avoid pressure droop and over- and under-pressurization of the gas admission valves (GAVs). By using the EPRS described above, mass flow is able to be distributed to the downstream manifold or engine cylinders very accurately, and the GAVs are able to be driven simultaneously in a pressure/pulse duration that is optimal for accurate and repeatable operation.

Abstract: A method to manufacture a throttle valve for an internal combustion engine comprising a valve body having a seat and a tube for the passage of conditioning fluid; an actuating device, which controls the rotation of a throttle plate; and a substantially uniform layer of a structural and heat-conducting resin interposed between the seat and the tube and applied on the entire available surface of the seat; the method comprising the steps of manufacturing the valve body provided with the seat by causing a first metal material to undergo a die casting process; applying a trace of the structural and thermosetting resin on the bottom of the seat; and inserting the tube into the seat so as to obtain a substantially uniform layer of the structural and thermosetting resin, which is interposed between the seat and the tube.

Abstract: A variable aperture orifice plate assembly for controlling and/or measuring fluid flow therethrough, from an upstream end to a downstream end. The orifice plate assembly includes a damper assembly having an array of adjustable cross-section apertures having an aggregate aperture area, upstream and downstream pressure sensors on opposite sides of the damper assembly, an actuator assembly for adjustably controlling the aggregate area of the apertures, and a processor configured for feedback operation in a closed-loop, to effect operation as an orifice plate. The processor is responsive to differential pressure across the damper assembly, and the aggregate area of the respective apertures normal to the flow paths of fluid flowing therethrough, to control the differential pressure and/or the aggregate area in a closed-loop manner so that fluid flowing between the array of apertures and the downstream end, is characterized by a corresponding array of vena contractae.

Abstract: Present embodiments provide a throttle body which may be used with a variety of engines of different manufacturers. The throttle body includes an inlet which expands to two or more bores, which extend downwardly through the throttle body. The throttle body may provide improved fuel pathways and fuel injector placement.

Abstract: An electronic compressor bypass valve (eCBV) module includes a pedestal housing, and a compressor bypass valve mounted to the pedestal housing. An inlet port, a first outlet port, and a second outlet port are integrally formed as part of the pedestal housing, where pressurized air flows into the inlet port. The eCBV module also includes a venturi device at least partially disposed in the second outlet port. When the compressor bypass valve is in an open position, a portion of the pressurized air flows through the first outlet port, and a portion of the pressurized air flows from the inlet port through the venturi device and through the second outlet port. When the compressor bypass valve is in the closed position the pressurized air is prevented from flowing into the first outlet port, and all of the pressurized air flows through the venturi device and through the second outlet port.

Abstract: A throttle valve housing (1) for a throttle valve arrangement for an internal combustion engine, wherein the throttle valve housing (1) is used to accommodate a pivotally mounted throttle valve and provides movement space for the throttle valve, wherein the throttle valve housing (1) has an inflow opening (2) on a first side for receiving a fluid and the throttle valve housing (1) has an outflow opening (3) on a second side for discharging a fluid, and wherein at least one sealing piece (4) projecting into the flow cross-section is arranged in the movement space of the throttle valve housing (1) and is used as a stop for the throttle valve in the closed position. Improved sealing characteristics are achieved in that the sealing piece (4) is formed in the wall of the throttle valve housing (1) in a non-cutting manner.

Abstract: A valve comprises a valve seat and a rotary valve element. The valve seat comprises a valve opening having a sealing surface. The valve element is mounted with respect to said valve seat for rotation about an axis of rotation between a closed position in which the valve element substantially closes the valve opening and an open position in which the valve element permits flow through the valve opening. The valve opening is elliptical in shape, having spaced apart upper and lower edges the upper and lower edges being generated as respective ellipses formed by parallel sections through a conical surface. The valve seat sealing surface is defined between said upper and lower edges.

Abstract: A valve comprises a valve body, a flap, and a shaft driving the flap. At least one first bearing guides a first end of the shaft. The first end of the shaft includes an inner housing emerging axially. The first bearing includes a barrel axially engaged in the inner housing, such that no accumulation of condensates can occur in the inner housing when the first end of the shaft points downward.

Abstract: A dial structure, a remote controller employing the dial structure, and a controlling method are provided. The dial structure comprises a carrying member and a dial movably connected with the carrying member. The dial is slidable with respect to the dial structure along a sliding direction and rotatable around a rotation shaft. An axial direction of the rotation shaft intersects with the sliding direction. The dial structure further comprises a rotation sensor configured to obtain rotating state information of the dial and a sliding sensor configured to obtain sliding state information of the dial.

Abstract: A regulating device for an internal combustion engine includes an exhaust gas recirculation pipe which opens into an intake pipe which are both formed in a housing, and a regulating element eccentrically mounted on a shaft. The shaft is arranged perpendicular to a center line of the intake pipe and the exhaust gas recirculation pipe. The regulating element includes a first surface, a second surface, and guide ribs arranged on the first surface. In a first end position of the regulating element, in which the intake pipe is at least throttled upstream of an opening of the exhaust gas recirculation pipe, a normal vector of the first surface points to an upstream side of the intake pipe. In a second end position of the regulating element, in which the exhaust gas recirculation pipe is closed, a normal vector of the second surface points to the exhaust gas recirculation pipe.

Abstract: An aspect includes an offset parallel valve system that includes a first valve body and a first valve disc operably disposed within the first valve body. The offset parallel valve system also includes a second valve body in parallel with the first valve body and a second valve disc operably disposed within the second valve body, where the second valve disc is laterally offset from the first valve disc. A linkage system is operably coupled to the first valve disc and the second valve disc. The linkage system includes an armature coupled to a grooved linkage member having a first groove and a second groove. The first groove delays movement of the second valve disc as the first valve disc rotates, and the second groove controls a rotation angle of the second valve disc.

Abstract: A butterfly bypass valve includes a housing defining a bypass flow passage with a pivotable throttle plate therein. An outer edge of the throttle plate in a closed position is in sealing engagement with a sealing portion of the housing such that the throttle plate restricts fluid flow through the bypass flow passage. The throttle plate is pivotable to an open position to allow fluid flow through the bypass flow passage. A port in the housing allows a portion of fluid passing through the bypass flow passage to be removed when the throttle plate is pivoted to the open position. A predetermined amount of pivoting of the throttle plate toward the open position can occur so as to allow flow through the port, while maintaining the edge of the throttle plate in substantially sealing engagement with the sealing portion so as to substantially prevent flow through the bypass passage.

Abstract: A valve device for a motor vehicle includes a housing, a flow channel located in the housing, and a flap arranged in the flow channel for closing the flow channel. The flap has regions in which a shaft penetrating the flap is fastened, and the shaft is rotatably supported in the housing. The flap has a spherical elevation at least on one side.

Abstract: An internal combustion engine may include at least one engine block having a plurality of cylinders and at least one flange component. At least one attachment part may be secured to the at least one flange component. An alignment device may be constructed and arranged to align the at least one attachment part relative to the at least one flange component when the at least one attachment part is attached to the at least one flange component. The alignment device may include at least a first alignment unit, a second alignment unit, and a third alignment unit, which may be spaced apart from one another. At least one of the first alignment unit, the second alignment unit, and the third alignment unit may be constructed and arranged to align the at least one attachment part to a cylinder head in relation to a first aligning direction perpendicular to an attaching direction, when the at least one attachment part is attached to the cylinder head.

Abstract: A valve device for a fuel cell arrangement in a motor vehicle includes: a housing; a flow channel extending in the housing; a flap configured to influence a flow cross-section in the flow channel; a shaft to which the flap is attached, the shaft being rotatably supported in the housing; a drive configured to drive the flap via the shaft; a valve seat arranged in the flow channel; and a seal including polytetrafluoroethylene (PTFE) arranged on a radially peripheral edge of the flap, the seal being configured to contact the valve seat with the flap in a closed position of the flap, so that the shaft passes through the flap at an angle. The seal includes a spring.

Abstract: There is provided a range switching device that can switch the shift ranges by use of a mechanical driving force source even when the motor does not normally function. The range switching device includes an output axle coupled with the shift shaft of an automatic transmission, a motor, an elastic driving device whose driving force source is elastic energy of an elastic member, and a coupling mechanism that couples the output axle, the motor, and the elastic driving device with one another; the elastic driving device has a holding mechanism in which there can be performed switching between a holding state where accumulated elastic energy is held and a releasing state where the elastic energy is released so as to drive the output axle.

Abstract: A throttle device is for a marine engine. The throttle device has a throttle body with a through-bore for conveying air for combustion in the marine engine. A throttle plate is movable into and between a closed position in which the throttle plate prevents airflow through the through-bore and an open position in which the throttle plate allows the airflow through the through-bore. A restrictor device located is adjacent to the throttle plate. The restrictor device restricts the airflow through the through-bore when the throttle plate is moved out of the closed position.

Abstract: A driving assistance device, including an automated driving switch; an emergency button; and a controller configured to provide either automated driving in which travel is performed along a current travel path of a host vehicle or automated stopping in response to manipulation by a driver of the automated driving switch or of the emergency button.

Abstract: A mixer valve of an internal combustion engine of a motor vehicle includes a single servo-motor and a differential. A flap arranged in an intake port and a flap arranged in a exhaust duct are driven by a differential. Spring elements tension the flaps in a base position counter to the stops and determine which of the flaps is driven in which control area of the servo-motor.

Abstract: In an electric actuator, one end portion of a return spring is hooked to a first slit formed in a radially outer guide of an output gear, so that the return spring is twisted for a predetermined angle that is slightly smaller than an initial set angle. A tilted slit portion is formed at an opening of a second slit that is formed in a covering wall of a spring installation member to twist the return spring to a predetermined initial set angle. Thereby, simultaneously with assembling of a valve shaft to the output gear, the return spring is twisted for the initial set angle. Thus, an assembling work of the electric actuator can be simplified.

Abstract: A fuel evaporative gas treatment device for a fuel tank is used in a motorcycle including a combustion engine with a supercharger. The fuel evaporative gas treatment device includes a canister which contains an adsorbent for adsorbing fuel evaporative gas from the fuel tank, a communication passage which communicates between an air intake passage for the combustion engine and the canister, and a check valve provided on the communication passage. The check valve blocks fluid flow from the air intake passage to the canister and permits fluid flow from the canister to the air intake passage.

Abstract: A plurality of cylinders are disposed in parallel in a vehicle width direction, a clutch chamber is disposed in either one of the right and the left in the vehicle width direction, an intake manifold, a fuel injection device, a throttle body, and an intake pipe are disposed between a cylinder assembly and an air cleaner in an upper part of a crankcase assembly. The throttle body is disposed on an opposite side in the vehicle width direction of the clutch chamber.

Abstract: An intake pipe for intake gas of an internal combustion engine has an intake pipe channel and a flap unit with a flap shaft and a flap fixedly arranged on the flap shaft. The flap unit alternatingly opens or closes the intake pipe channel. A hollow insert body is disposed in the intake pipe channel, wherein the flap unit is arranged in the insert body and the flap is positioned in a hollow interior of the insert body. The insert body has opposite end faces and the opposite end faces are open. The flap shaft extends through opposite walls of the insert body in a radial direction relative to an insert body axis of the insert body. The insert body is rotatable on the flap shaft. A radial inner circumferential side of the insert body widens toward at least one of the open end faces.

Abstract: The intake system has a valve seat, a plate valve, and an elastic sealing member. A path is provided to pass through the valve seat and to communicate with an intake passage of an internal combustion engine. The plate valve fits to or separates from the valve seat to close or open the path. The plate valve is provided with through holes passing through the plate valve in the thickness direction at a valve periphery part. The through holes are arranged linearly one after another in a peripheral direction of the plate valve to be offset to each other in the direction perpendicular to the peripheral direction. The elastic sealing member includes an elastic covering part that covers a first surface and a second surface of the plate valve and elastic coupling parts that are disposed in the through holes and are coupled with the elastic covering part at the first surface and the second surface.

Abstract: A valve device includes a valve, an actuator actuating the valve, a control unit controlling an opening degree of the valve, a return spring biasing the valve only in a valve-closing direction, and a mechanical stopper controlling a rotating limit of the valve in the valve-closing direction. The valve is defined to rotate on a plus side from the full-close position in a valve-opening direction and to rotate on a minus side from the full-close position in a direction opposite from the valve-opening direction. The mechanical stopper stops the valve at a stopper position which is set on the minus side from the full-close position, and a predetermined overshoot range is defined between the full-close position and the stopper position.

Abstract: A control device executes a feedback control operation of an electric motor such that a sensed opening degree of a valve approaches a target opening degree, which is set for a time of fully closing the valve. The control device stops the energization of the electric motor after reaching of the sensed opening degree of the valve to an energization stop opening degree, which is set on a valve opening side of a full closing degree of the valve in a valve opening direction of the valve. A return spring urges the valve in a valve closing direction of the valve. The target opening degree is set on a valve closing side of the energization stop opening degree in the valve closing direction.

Abstract: The disclosure relates to a direct current electric machine comprising a housing, a rotor having coils configured as electromagnets, and a stator with stator magnets. The rotor and the stator are positioned inside the housing. The electric machine also comprises sliding contacts configured to conduct current which is to be conducted through the coils of the rotor, as a commutator. The electric machine further comprises an interference suppressor configured to suppress electrical interference that emanates from the direct current electric machine. The interference suppressor is positioned outside of the housing.

Abstract: An intake device includes: an intake port; a valve body which is disposed in the intake port and rotated around a rotating shaft between an opening position and a closing position; and a seal surface which is integrally provided at the intake port and made up of an inner wall surface with which the valve body comes into contact at the closing position of the valve body, wherein the seal surface includes a first seal surface having an inner contact portion which protrudes to the inside of the intake port and a first outer contact portion which is located further to the outside than the inner contact portion, and a second seal surface having a second outer contact portion without having the inner contact portion.

Abstract: A working machine includes a throttle cable for transmitting an amount of operation of a throttle lever to a throttle valve, upper and lower guide rollers for guiding the throttle cable, and a throttle cable tightening/loosening means including a pivotable arm portion having a pressing roller located between the upper and lower guide rollers. The working machine further includes connecting means interconnecting the arm portion and a clutch lever. Operation of the clutch lever moves the pressing roller between a tightening position to tighten the throttle cable and a slackening position to slacken the throttle cable.

Abstract: In detection of a temperature of fresh air which is supplied to an intake manifold of an engine, by a fresh air temperature sensor, the invention aims at preventing precision of an engine control from dropping due to difference in an attached position of the fresh air temperature sensor. The engine device has an intake pipe for supplying fresh air to the intake manifold, a breather chamber for separating lubricating oil, the breather chamber being arranged within a head cover covering an upper surface side of a cylinder head, and a blow-by gas return pipe. The intake pipe and the breather chamber are connected via the blow-by gas return pipe. The fresh air temperature sensor detecting a temperature of the fresh air introduced into the intake pipe is attached to the intake pipe.

Abstract: A system according to the principles of the present disclosure includes a desired throttle area module, a correction factor module, a throttle control module, and an airflow compensation diagnostic module. The desired throttle area module determines a desired throttle area based on a driver input. The correction factor module determines a throttle area correction factor based on a difference between an estimated intake airflow and a measured intake airflow to compensate for a decrease in the measured intake airflow due to a flow restriction. The throttle control module determines a desired throttle position based on the desired throttle area and the throttle area correction factor. The airflow compensation diagnostic module diagnoses a fault in an amount of intake airflow compensation based on the throttle area correction factor.

Abstract: An airflow control apparatus does not impede fluid flow and does not reduce intake efficiency even when a flow passage area is decreased by the valve area. The airflow control apparatus includes a housing whose interior forms a fluid passage, bushes attached to the housing interior, a shaft held by the bushes, and a valve attached to the housing interior and rotatable in synchronization with the shaft. The passage includes an upstream passage, a dead band, and a downstream passage. Bush attachment grooves are provided in a portion of the passage. The bottom surface of the bush attachment grooves include an opening. The bushes are rotatably fitted to the opening and are attached to the housing interior. A first cross section perpendicular to a flow direction in the upstream passage has a larger cross-sectional area than a second cross section perpendicular to the flow direction in the downstream passage.

Abstract: An Exhaust Gas Recirculation (EGR) apparatus for recirculating engine exhaust gas comprising a valve member disposed in an exhaust gas recirculation passage of an engine, the valve member movable between an open position and a closed position to control the flow of the exhaust gas through the exhaust gas recirculation passage, one or more bleeders to enable flow of exhaust gas through the exhaust gas recirculation passage when the valve member is in the closed position.

Abstract: A fresh air system for supplying combustion chambers of an internal combustion engine with fresh air may include a housing, through which at least one fresh air path passes, and a flap mechanism, which includes at least one flap adjustably mounted on the housing. The flap may be rotatably adjustable between a closed position, in which the flap closes off the fresh air path in a fluid-tight manner and an opened position, in which the flap opens the fresh air path for fresh air to flow through. The flap mechanism may include a spring-elastic preload element, which supports itself on the housing and preloads the flap against at least one of the opened position and the closed position.

Abstract: A butterfly valve including a valve body having a passage, a valve shaft assembly, a valve plate, and a tube that is friction fit inside the passage is provided. The valve shaft assembly includes a first shaft portion and a second shaft portion. The first and second shaft portions are in opposing spaced relation with the valve plate disposed therebetween. The valve plate has a flange such that when the butterfly valve is in the closed position a seal is formed with the tube, which is disposed within the fluid flow passage. The valve plate has lip extending from a portion of the valve plate that is radially outward from the circumference of the tube. The lip acts to reduce flow induced torque experienced while the valve plate is actuated from the closed to the open position.

Abstract: The invention relates to a double metering device for metering a fluid of an internal combustion engine, said metering device comprising a body in which are arranged a first (3) and a second (4) fluid circulation path for said fluid, in which paths first and second mobile shut-off shutters are positioned in order to meter the flow rate of fluid passing along said paths (3, 4), said metering device further comprising a motor that actuates said shutters and a drive train able to actuate the first shutter and/or the second shutter in response to actuation of said motor. According to the invention, the drive train is configured so that over a first operating range (30) it meters the flow rate passing along the first outlet path (3) by actuating the first shutter, the other shutter being held in the open position.

Abstract: A butterfly valve (100) is provided. The butterfly valve (100) includes a valve body (103) including a valve bore (109) passing through the valve body (103), with the valve bore (109) including an upstream valve bore portion (109U) and a downstream valve bore portion (109D), a shaft bore (112), a valve shaft (121) located in the shaft bore (112) and extending substantially across the valve bore (109), and a valve flap (107) affixed to the valve shaft (121) and configured to be rotated by the valve shaft (121). The valve flap (107) is configured to rotate between a closed orientation blocking the valve bore (109) and an open orientation. The valve flap (107) is affixed on an upstream valve bore portion side of the valve shaft (121), wherein incoming fluid presses the valve flap (107) against the valve shaft (121).

Abstract: A method of operating a vehicle having an engine, an engine control unit (ECU), a throttle operator, and a throttle body fluidly communicating with the engine. A throttle valve disposed in the throttle body regulates fluid flow to the engine. A throttle valve actuator is connected thereto for controlling a throttle valve position. A key receiver is configured to link to a key. The method includes linking a key to the key receiver and initiating engine operation. If the key is linked to the key receiver and engine operation has been initiated, an identification code of the key is read and an authorization status of the key is thereby determined. If the key is determined to be authorized, the throttle valve position is controlled based in part on a throttle operator position. If the key is determined to be unauthorized, the throttle valve position is limited to a security limit.

Abstract: A vehicular air intake is configured to produce a turbulent intake air flow in a cylinder of an engine. The air flow may be provided as a vortex. A throttle valve, for controlling an amount of intake air provided to the engine, has a pivot shaft with an axis which is offset from a center axis of an air intake passage in which the throttle valve is installed, and a throttle plate affixed to the pivot shaft. The pivot axis is offset and spaced away from the central axis of the throttle body such that a first portion of a throttle plate disposed on a first side of the pivot shaft, is larger than a second portion of the throttle plate disposed on a second side of the pivot shaft. This arrangement provides the non-uniform turbulent air flow into the engine.

Abstract: A valve device for an intake system of an internal combustion engine may include a housing and a flap arrangement. The housing may have one inlet duct per cylinder of the internal combustion engine. The flap arrangement may have a flap for each inlet duct for varying the cross-section of the respective inlet duct through which a flow can pass. The respective flap may be a trough-shaped flap having a curved stirrup region. The respective flap may be arranged between the stirrup ends eccentrically with respect to a flap pivot axis. The flap arrangement may have a common actuating shaft for the common pivoting of the flaps about the flap pivot axis. The actuating shaft may be coupled with an adjusting drive via a lever element having a metallic insert and a plastic body injected onto the insert.

Abstract: An engine including a motorized throttle valve that can implement mutually neighboring disposition of a throttle body and a cylinder head and can implement a good opening and closing responsibility thereof. A swelling portion is formed on a side wall of a valve chamber in such a manner so as to bite between those of throttle bodies which neighbor with each other in order to accept a protrusion of part of a valve system in a radial direction of first and second camshafts. An electric motor is disposed at one side of the group of the throttle bodies. A speed reduction mechanism, for transmitting output power of the electric motor to a valve shaft, is disposed between those throttle bodies, which neighbor with each other at a different location in the group of the throttle bodies, in a neighboring relationship with the valve chamber.