EP1384874B1 - Dispositif d'admission de moteur - Google Patents

Dispositif d'admission de moteur Download PDF

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Publication number
EP1384874B1
EP1384874B1 EP02720533A EP02720533A EP1384874B1 EP 1384874 B1 EP1384874 B1 EP 1384874B1 EP 02720533 A EP02720533 A EP 02720533A EP 02720533 A EP02720533 A EP 02720533A EP 1384874 B1 EP1384874 B1 EP 1384874B1
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EP
European Patent Office
Prior art keywords
valve
bypass
bore
throttle
device block
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP02720533A
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German (de)
English (en)
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EP1384874A1 (fr
EP1384874A4 (fr
Inventor
Hiroshige Akiyama
Junichi Shimokawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Keihin Corp
Original Assignee
Keihin Corp
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Filing date
Publication date
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Publication of EP1384874A1 publication Critical patent/EP1384874A1/fr
Publication of EP1384874A4 publication Critical patent/EP1384874A4/fr
Application granted granted Critical
Publication of EP1384874B1 publication Critical patent/EP1384874B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/1035—Details of the valve housing
    • F02D9/106—Sealing of the valve shaft in the housing, e.g. details of the bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
    • F02B61/02—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving cycles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
    • F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
    • F02D11/10—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
    • F02D35/0015—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for using exhaust gas sensors
    • F02D35/0023—Controlling air supply
    • F02D35/003—Controlling air supply by means of by-pass passages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/1065—Mechanical control linkage between an actuator and the flap, e.g. including levers, gears, springs, clutches, limit stops of the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/02—Light metals
    • F05C2201/021—Aluminium

Definitions

  • the present invention relates to an intake system for an engine, and particularly, to an improvement in an intake system in which a bypass passage is connected to an intake passage defined in a throttle body and provided with a throttle valve, and extends around the throttle valve, and an actuator is connected to a bypass valve for opening and closing the bypass passage to open and close the bypass valve.
  • the conventional intake system for the engine the entire bypass passage is defined in the throttle body, and the bypass valve and the actuator are mounted to the throttle body. Therefore, the conventional system is accompanied with the following drawbacks: a complicated processing or working is required for the throttle body and moreover, all of parts must be assembled to the throttle body itself, resulting in a poor assemblability.
  • the present invention has been accomplished with such circumstances in view, and it is an object of the present invention to provide an intake system of the above-described type for an engine, wherein the workability and assemblability are improved, and the intake system can be constructed compactly.
  • an intake system for an engine in which a bypass passage is connected to an intake passage defined in a throttle body and provided with a throttle valve, and extends around the throttle valve, and an actuator is connected to a bypass valve for opening and closing the bypass passage to open and close the bypass valve, characterized in that a joint surface of a device block is coupled to a mounting surface formed on the throttle body in parallel to an axis of the intake passage; the bypass passage is comprised of a bypass inlet bore made in the throttle body to permit the communication between the intake passage upstream of the throttle valve and the mounting surface, a bypass outlet bore made in the throttle body to permit the communication between the intake passage downstream of the throttle valve and the mounting surface, an upstream groove defined in the joint surface and leading to the bypass inlet bore with an open surface thereof closed by the mounting surface, a downstream groove defined in the joint surface and leading to the bypass outlet bore with an open surface thereof closed by the mounting surface, a valve chest inlet bore which opens into
  • a device block assembly comprising the device block, bypass valve, actuator, throttle sensor and the like can be fabricated in parallel to the throttle body, thereby contributing to an enhancement in productivity.
  • the upstream groove, the downstream groove, the valve chest inlet bore and the valve chest outlet bore forming principal portions of the bypass passage can be formed at a stroke in the joint surface of the device block by stamping and hence, the fabrication is extremely easy.
  • the bypass valve and the actuator are disposed in parallel to the joint surface of the device block and hence, the upstream and downstream grooves and the bypass valve as well as the actuator can be provided in the relatively thin device block so that they can be disposed in proximity to each other. Therefore, the overhanging of the device block from the throttle body can be reduced, leading to the compactness of the entire intake system.
  • the device block is removed from the throttle body, the maintenance of the bypass passage, the bypass valve, the throttle sensor and the like can be carried out easily.
  • the device block has a valve guide bore provided therein in parallel to the joint surface, and the bypass valve of a piston type is slidably received in the valve guide bore to define the valve chest at a tip end thereof , and is disposed so that an axis thereof has a gradient ascending slightly toward the actuator in a state in which the throttle body has been mounted to the engine for a vehicle.
  • the bypass valve and actuator have only the slight gradient near the horizontal plane. Therefore, even if a vertical vibration is applied with traveling of the vehicle, such vibration cannot be applied violently to a connection between the bypass valve and the actuator, and it is possible to avoid the wearing due to the vibration of the connection to stabilize the metering performance of the bypass valve.
  • the gradient provided to the bypass valve and the actuator is such that the actuator is located at a higher level. Therefore, even if a fluid foreign matter such as oil, water and the like in a blow-by gas and an EGR gas enters into the valve chest of the bypass passage through the intake passage during operation of the engine, the foreign matter cannot be raised toward the step motor and hence, it is possible to previously prevent the defective operation of the actuator due to the freezing or accumulation of the foreign matter.
  • the bypass valve is provided with a recess which opens into an end face of the bypass valve to form a portion of the valve chest, and a metering notched groove extending in an axial direction of the valve to permit the recess to communicate with the valve chest outlet bore during the low opening degree of the bypass valve.
  • the amount of air drawn into the bypass passage can be controlled finely by the area of the notched groove opening into the valve chest outlet bore.
  • the actuator comprises a step motor having a rotor connected through a screw mechanism to the bypass valve non-rotatably fitted in the valve guide bore.
  • the rotation of an output shaft of the step motor can be transmitted as an axial displacement to the piston-type bypass valve, while being reduced by the screw mechanism, whereby the fine adjustment of the opening degree of the bypass valve can be achieved.
  • reference character E designates an engine mounted on a vehicle body of a two-wheeled motor vehicle.
  • An intake pipe Ei connected to a cylinder Eh of the engine E has a gradient ⁇ with its upstream side located at a slightly higher level.
  • a throttle body 1 is connected to an upstream end of the intake pipe Ei and has an intake passage 2 connected to the inside of the intake pipe Ei. Therefore, with the throttle body 1 connected to the intake pipe Ei, the intake passage 2 is disposed to have a gradient ⁇ with its upstream side located at a slightly higher level, as is the intake pipe Ei.
  • An upstream end of the intake passage 2 is of a funnel shape, and an air cleaner (not shown) is connected to the upstream end of the intake passage 2.
  • a fuel injection valve I for injecting fuel toward an intake valve is mounted to the cylinder Eh.
  • a pair of bosses 3 and 3' are formed on opposite sides of an intermediate portion of the throttle body 1 and have shaft bores 4 and 4' perpendicular to an axis of the intake passage 2, respectively, and a butterfly-type throttle valve 5 for opening and closing the intake passage 2 is secured to a valve shaft 6 rotatably received in the shaft bores 4 and 4'.
  • a throttle drum 7 for connecting an operating wire 9 leading to a throttle operating member (not shown) is secured to one end of the valve shaft 6.
  • a rotor 8a of a throttle sensor 8 for detecting the opening degree of the throttle valve 5 is secured to the other end of the valve shaft 6.
  • a housing 10 is integrally formed at one end of the throttle body 1 and has a bottom surface 1a located in proximity to the intake passage 2 and parallel to the axis of the intake passage 2.
  • the other boss 3' protrudes on the bottom surface 1a of the housing 10, and the shaft bore 4' in the boss 3' and the bottom surface 1a are disposed to be perpendicular to each other.
  • the bottom surface 1a of the housing 10 is a mounting surface.
  • a joint surface 11a of a device block 11 accommodated in the housing 10 is superposed onto the mounting surface 1a, and the device block 11 is secured to the throttle body 1 by a bolt 12.
  • a lid plate 13 is secured to an open surface of the housing 10 by a bolt 14 to air-tightly close the open surface.
  • a first accommodation bore 37 for accommodation of the other boss 3' and the rotor 8a is defined in the device block 11, and a pickup coil 8b is mounted to an inner wall of the first accommodation bore 37.
  • the pickup coil 8b forms the throttle sensor 8 for electrically detecting the opening degree of the throttle valve 5 by cooperation with the rotor 8a.
  • a bypass passage 15 is defined to extend from the throttle body 1 to the device block 11.
  • the bypass passage 15 is comprised of a bypass inlet bore 20 (see Figs.4 and 5 ) made in the throttle body 1 to permit the communication between the intake passage 2 and the mounting surface 1a at a location upstream of the throttle valve 5, a bypass outlet bore 21 (see Figs .
  • the throttle body 1 makes in the throttle body 1 to permit the communication between the intake passage 2 and the mounting surface 1a at a location downstream of the throttle valve 5, an upstream groove 16 defined in the joint surface 11a of the device block 11 and leading at one end thereof to the bypass inlet bore 20, a downstream groove 17 likewise defined in the joint surface 11a of the device block 11 and leading at one end thereof to the bypass outlet bore 21, a valve chest inlet bore 23 which opens into a groove bottom of a downstream end of the upstream groove 16, a valve chest outlet bore 24 which opens into a groove bottom of an upstream end of the downstream groove 17, and a valve chest 22 in a cylindrical valve guide bore 19 defined in the throttle body 1 to permit the communication between the valve chest inlet bore 23 and the valve chest outlet bore 24.
  • the bypass passage 15 is connected to the intake passage 2 so as to extend around or bypass the throttle valve 5.
  • bypass inlet bore 20, the bypass outlet bore 21 and the shaft bores 4 and 4' are disposed in parallel to one another, so that they can be made at a stroke by a multi-spindle drilling machine.
  • the valve chest outlet bore 24 is disposed offset upwards with respect to the valve chest inlet bore 23 and toward the bypass inlet bore 20, as shown in Fig. 4 .
  • the cylindrical valve guide bore 19 is disposed so that it is parallel to the intake passage 2 and in proximity to the upstream groove 16 and the downstream groove 17, and so that the valve chest 22 overlaps with both of the valve chest inlet bore 23 and the valve chest outlet bore 24.
  • valve guide bore 19 is disposed in parallel to the intake passage 2 and hence, in a state in which the throttle body 1 has been connected to the intake pipe Ei, the throttle body 1 is provided with the slight gradient ⁇ as is the intake passage 2 (see Fig.2 ) with the valve chest 22 located at a lower level.
  • a piston-type bypass valve 25 is slidably received in the valve guide bore 19, and the valve chest 22 is defined in the valve guide bore 19 by a tip end of the valve 25.
  • a key 42 integrally and projectingly provided on an inner peripheral surface of the valve guide bore 19 is engaged into a key groove 41 in an outer periphery of the bypass valve 25.
  • a recess 25a which opens into an end face of the bypass valve 25 adjacent the valve chest 22 to form a portion of the valve chest 22, and a metering notched groove 26 which permits the recess 25a to communicate with the valve chest outlet bore 24.
  • the area of the notched groove 26 opening into the valve chest outlet bore 24 is controlled, so that the amount of air drawn into the bypass passage is finely adjusted.
  • the area of the valve chest outlet bore 24 opening into the valve chest 22 is controlled by the end face of the bypass valve 25, so that the amount of air drawn into the bypass passage is adjusted relatively largely.
  • a step motor 28 is disposed coaxially with the bypass valve 25 above the bypass valve 25 along the gradient ⁇ (see Fig.2 ), and has a rotor 28a connected to the bypass valve 25 through a screw mechanism 27. More specifically, an operating member 32 having a threaded bore 31 is non-rotatably fitted into a central portion of the bypass valve 25, and a threaded shaft 30 integrally coupled to the rotor 28a is threadedly fitted into the threaded bore 31 in the operating member 32.
  • the step motor 28 has a stator 28b accommodated and fixed in a second accommodation bore 38 in the device block 11, which leads to the valve guide bore 19.
  • An expanded portion 32a is formed at one end of the operating member 32 to abut against a ceiling surface of the recess 25a in the bypass valve 25, and a clip 35 is locked at the other end of the operating member 32.
  • a coil spring 45 is mounted under compression between the clip 35 and the bypass valve 25 for biasing the bypass valve 25 in a direction of abutment against the shoulder 32a.
  • the operating member 32 is connected integrally to the bypass valve 25.
  • a seal groove 46 is defined in the joint surface 11a of the device block 11 to surround the upstream groove 16 and the downstream groove 17, and a seal member 47 is mounted in the seal groove 46, so that when the joint surface 11a is superposed onto the mounting surface 1a of the throttle body 1, the seal member 47 is brought into close contact with the mounting surface 1a. In this manner, open surfaces of the grooves 16 and 17 are air-tightly closed by the mounting surface 1a.
  • Third and fourth accommodation bores 39 and 40 open into an outer surface of the device block 11 opposite from the joint surface 11a.
  • the fourth accommodation bore 40 communicates with a downstream portion of the intake passage 2 through a communication groove 50 in the device block 11 and an orifice 49 in the throttle body 1.
  • An intake air temperature sensor 34 is mounted in the third accommodation bore 39 with its sensing portion 34a facing the upstream groove 16, and a boost vacuum sensor 33 is mounted in the fourth accommodation bore 40 with its sensing portion 33a facing the communication groove 50.
  • Information regarding conditions for the operation of the engine such as a throttle valve opening degree ⁇ th, a boost vacuum Pb and an intake air temperature Ta which are detected by the throttle sensor 8, the boost vacuum sensor 33 and the intake air temperature sensor 34, respectively, as well as an engine temperature Te detected by an engine-cooling water temperature sensor (not shown) and the like, is input to an electronic control unit 36 connected to the step motor 28.
  • a device block assembly 43 is constructed by mounting the bypass valve 25, the step motor 28, the pickup coil 8b, the boost vacuum sensor 23 and the intake air temperature sensor 34 to the device block 11.
  • the electronic control unit 36 calculates an amount of current supplied to the step motor 28 based on the information regarding conditions for operation of the engine such as the throttle valve opening degree ⁇ th, the boost vacuum Pb, the intake air temperature Ta, the engine temperature Te and the like input as described above, and carries out the supplying of current to rotate the rotor 28a in a normal direction or in a reverse direction in order to provide an optimal opening degree of the bypass valve 25 corresponding to the operating condition for the engine such as during starting, first idling and usual idling of the engine and during application of an engine brake.
  • the bypass valve 25 assumes a high opening degree position closer to the step motor 28 , the end face of the bypass valve 25 faces the valve chest outlet bore 24 and hence, the amount of air flowing through the bypass passage 15 and drawn into the engine can be controlled to a relatively large value by the area of the valve chest outlet bore 24 opening into the valve chest 22 to accommodate to the starting or the first idling of the engine.
  • the bypass valve 25 assumes a low opening degree position closer to the valve chest 22, the notched groove 26 of the bypass valve 25 faces the valve chest outlet bore 24 and hence, the amount of air flowing through the bypass passage 15 can be controlled to a relatively small value and finely by the area of the notched groove 26 opening into the valve chest outlet bore 24 to accommodate to the usual idling of the engine or the application of the engine brake.
  • the device block assembly 43 is constructed by mounting the bypass valve 25, the step motor 28, the pickup coil 8b, the boost vacuum sensor 23 and the intake air temperature sensor 34 to the device block 11 detachably mounted to the housing 10 integral with the throttle body 1. Therefore, the labor of processing or working for the throttle body 1 is reduced, and the device block assembly 43 can be fabricated in parallel to the throttle body 1, leading to an enhancement in productivity. Moreover, the maintenance of the bypass passage 15, the bypass valve 25, the throttle sensor 8 and the like can be carried out easily by removing the device block 11 from the throttle body 1.
  • the intake system has general-purpose properties as described above and hence, the degree of freedom of the layout of the intake system can be increased, and moreover, the mass productivity can be enhanced to provide a reduction in cost.
  • the upstream groove 16, the downstream groove 17, the valve chest inlet bore 23 and the valve chest outlet bore 24 constituting principal portions of the bypass passage 15 can be formed at a stroke in the joint surface 11a of the device block 11 by stamping and hence, the fabrication is extremely easy.
  • the valve guide bore 19 permitting the communication between the valve chest inlet bore 23 and the valve chest outlet bore 24 is disposed in parallel to the joint surface 11a of the device block 11 and hence, the upstream and downstream grooves 16 and 17 and the valve guide bore 19 can be formed in the relatively thin device block, so that they are disposed in proximity to each other. Therefore, the overhanging of the device block 11 from the throttle body 1 can be reduced, leading to the compactness of the entire intake system.
  • the bypass valve 25 and the step motor 28 connected to each other through the screw mechanism 27 have only a slight gradient ⁇ near the horizontal plane and hence, even if a vertical vibration is exerted with the traveling of the vehicle, it is not applied violently to a connection between the bypass valve 25 and the step motor 28, i.e., to the screw mechanism 27, and the wear due to the vibration of the mechanism 27 can be avoided to provide a stabilization in metering performance of the bypass valve 25.
  • the gradient ⁇ provided to the bypass valve 25 and the step motor 28 is such that the step motor 28 is located at a higher level. Therefore, even if fluid foreign matters such as oil, water and the like in a blow-by gas and an EGR gas enters into the valve chest 22 of the bypass passage 15 through the intake passage 2 during operation of the engine, the foreign matter cannot be raised toward the step motor 28 and hence, it is possible to previously prevent the defective operation of the step motor 28 due to the freezing or accumulation of the foreign matter.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Abstract

L'invention concerne un dispositif d'admission de moteur dans lequel la surface de jonction (11a) d'un bloc de dispositif (11) est connectée à la surface de fixation (10a) d'un corps d'obturateur (1) parallèle à une voie d'admission (2), et dans lequel une voie de dérivation (15) est composée d'un orifice d'entrée de dérivation (20) établissant une communication entre la région amont de la voie d'admission (2) et une surface de fixation (1a), un orifice de sortie de dérivation (21) établissant une communication entre la région aval de la voie d'admission (2) et la surface de fixation (1a), une rainure amont (16) étant formée dans la surface de fixation (1a), une rainure aval (17) étant formée dans la surface de jonction (11a), une chambre de valve (22) établissant une communication entre les rainures amont et aval (16, 17), et dans lequel une valve de dérivation (25) et son actionneur (28) disposé face à la chambre de valve (22) sont disposés dans le bloc du dispositif (11) de façon parallèle à la surface de jonction (11a), un capteur d'obturateur (8) étant placé dans le bloc de dispositif (11). Cet arrangement permet d'améliorer la fonctionnalité et l'assemblage d'un dispositif d'admission de moteur, possédant une valve de dérivation et un actionneur, tout en réduisant sa taille.

Claims (4)

  1. Système d'admission pour un moteur, dans lequel un passage de dérivation (15) est raccordé à un passage d'admission (2) défini dans un corps d'étranglement (1) et doté d'une vanne d'étranglement (5), et s'étend autour de ladite vanne d'étranglement (5), et un actionneur (28) est relié à une vanne de dérivation (25) dévolue à l'ouverture et à la fermeture dudit passage de dérivation (15), afin d'ouvrir et de fermer ladite vanne de dérivation (25),
    caractérisé par le fait qu'une surface (11a) de rattachement d'un bloc fonctionnel (11) est couplée à une surface de montage (1a) ménagée sur ledit corps d'étranglement (1), parallèlement à un axe dudit passage d'admission (2) ; ledit passage de dérivation (15) comprend un alésage (20) d'admission de dérivation, pratiqué dans ledit corps d'étranglement (1) afin d'autoriser la communication entre ladite surface de montage (1a) et le passage d'admission (2), en amont de ladite vanne d'étranglement (5), un alésage (21) de sortie de dérivation, ouvragé dans ledit corps d'étranglement (1) pour autoriser la communication entre ladite surface de montage (1a) et ledit passage d'admission (2), en aval de ladite vanne d'étranglement (5), une rainure (16) définie, en amont, dans ladite surface de rattachement (11a) et menant audit alésage (20) d'admission de dérivation, et dont une face ouverte est obturée par ladite surface de montage (1a), une rainure (17) définie, en aval, dans ladite surface de rattachement (11a) et menant audit alésage (21) de sortie de dérivation, et dont une face ouverte est obturée par ladite surface de montage (1a), un alésage d'admission (23) de chambre de distribution, qui débouche dans le fond d'une extrémité aval de ladite rainure (16) pratiquée en amont, un alésage de sortie (24) de chambre de distribution, débouchant dans le fond d'une extrémité amont de ladite rainure (17) pratiquée en aval, et une chambre de distribution (22) ménagée dans ledit bloc fonctionnel (11) pour permettre la communication entre ledit alésage d'admission (23) et ledit alésage de sortie (24) de ladite chambre de distribution ; ladite vanne de dérivation (25) faisant face à ladite chambre de distribution (22), et ledit actionneur (28) assigné à l'ouverture et à la fermeture de ladite vanne de dérivation (25), sont placés dans ledit bloc fonctionnel (11) parallèlement à ladite surface de rattachement (11a) ; et un capteur d'étranglement (8), conçu pour détecter un degré d'ouverture de ladite vanne d'étranglement (5), est disposé dans ledit bloc fonctionnel (11).
  2. Système d'admission pour un moteur, selon la revendication 1, dans lequel
    ledit bloc fonctionnel (11) comporte un alésage de guidage (19) façonné, dans ledit bloc, parallèlement à ladite surface de rattachement (11a) ; et ladite vanne de dérivation (25), de type piston, est logée à coulissement dans ledit alésage de guidage (19) en vue de définir ladite chambre de distribution (22), à une extrémité frontale de ladite vanne, et est agencée de façon telle qu'un axe de ladite vanne présente un gradient à progression légèrement ascendante, en direction dudit actionneur (28), dans une condition dans laquelle ledit corps d'étranglement (1) a été monté sur un moteur (E) dédié à un véhicule.
  3. Système d'admission pour un moteur, selon la revendication 2, dans lequel
    ladite vanne de dérivation (25) offre un évidement (25a) qui débouche dans une face extrême de ladite vanne de dérivation (25), pour former une région de ladite chambre de distribution (22), et une rainure contre-dépouillée de dosage (26) s'étendant dans une direction axiale de ladite vanne de dérivation (25), pour permettre audit évidement (25a) de communiquer avec ledit alésage de sortie (24) de ladite chambre de distribution lorsque le degré d'ouverture de ladite vanne de dérivation (25) est faible.
  4. Système d'admission pour un moteur, selon la revendication 2 ou 3, dans lequel
    ledit actionneur comprend un moteur pas-à-pas (28) pourvu d'un rotor (28a) relié, par l'intermédiaire d'un mécanisme (27) à filetage, à ladite vanne de dérivation (25) ajustée, sans faculté de rotation, dans ledit alésage de guidage (19).
EP02720533A 2001-04-27 2002-04-19 Dispositif d'admission de moteur Expired - Lifetime EP1384874B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2001132575 2001-04-27
JP2001132575 2001-04-27
PCT/JP2002/003948 WO2002097254A1 (fr) 2001-04-27 2002-04-19 Dispositif d'admission de moteur

Publications (3)

Publication Number Publication Date
EP1384874A1 EP1384874A1 (fr) 2004-01-28
EP1384874A4 EP1384874A4 (fr) 2009-03-11
EP1384874B1 true EP1384874B1 (fr) 2010-12-08

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ID=18980568

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Application Number Title Priority Date Filing Date
EP02720533A Expired - Lifetime EP1384874B1 (fr) 2001-04-27 2002-04-19 Dispositif d'admission de moteur

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EP (1) EP1384874B1 (fr)
CN (1) CN1297736C (fr)
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TWI403640B (zh) * 2011-04-14 2013-08-01 Sanyang Industry Co Ltd Can identify the action of the intake control mechanism

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JP3954819B2 (ja) * 2001-08-31 2007-08-08 株式会社ケーヒン バイパス吸気量制御装置におけるシール構造
CN1938503B (zh) * 2004-03-31 2012-01-18 株式会社京浜 燃料喷射装置中的空转空气控制装置
JP4459154B2 (ja) * 2005-11-09 2010-04-28 株式会社ケーヒン 多連スロットルボデーにおけるエアバイパス装置
CN102678341B (zh) * 2011-12-25 2014-08-27 河南科技大学 一种进气制动器

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JPS60157947U (ja) * 1984-03-29 1985-10-21 日本電子機器株式会社 内燃機関のアイドルスピ−ド制御弁
JPH0645654Y2 (ja) * 1986-01-17 1994-11-24 マツダ株式会社 エンジンの吸気装置
JPS63136236A (ja) * 1986-11-28 1988-06-08 Toshiba Corp デバツグ用切替装置
JPH0631179Y2 (ja) * 1987-02-26 1994-08-22 三菱電機株式会社 機関の吸気量制御装置
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TWI403640B (zh) * 2011-04-14 2013-08-01 Sanyang Industry Co Ltd Can identify the action of the intake control mechanism

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ES2355359T3 (es) 2011-03-25
EP1384874A1 (fr) 2004-01-28
WO2002097254A1 (fr) 2002-12-05
DE60238525D1 (de) 2011-01-20
CN1297736C (zh) 2007-01-31
TW575712B (en) 2004-02-11
EP1384874A4 (fr) 2009-03-11
CN1505732A (zh) 2004-06-16

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