EP3514369B1 - Dispositif d'étranglement - Google Patents

Dispositif d'étranglement Download PDF

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Publication number
EP3514369B1
EP3514369B1 EP19152283.8A EP19152283A EP3514369B1 EP 3514369 B1 EP3514369 B1 EP 3514369B1 EP 19152283 A EP19152283 A EP 19152283A EP 3514369 B1 EP3514369 B1 EP 3514369B1
Authority
EP
European Patent Office
Prior art keywords
throttle
shaft
transmission mechanism
disposed
opening degree
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.)
Active
Application number
EP19152283.8A
Other languages
German (de)
English (en)
Other versions
EP3514369A1 (fr
Inventor
Daisuke Hamasaki
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.)
Mikuni Corp
Original Assignee
Mikuni Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP2018219634A external-priority patent/JP7219063B2/ja
Application filed by Mikuni Corp filed Critical Mikuni Corp
Publication of EP3514369A1 publication Critical patent/EP3514369A1/fr
Application granted granted Critical
Publication of EP3514369B1 publication Critical patent/EP3514369B1/fr
Active legal-status Critical Current
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
    • F02D9/109—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps having two or more flaps
    • F02D9/1095—Rotating on a common axis, e.g. having a common shaft
    • 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
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
    • 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
    • F02D9/1035—Details of the valve housing
    • F02D9/105—Details of the valve housing having a throttle position sensor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/16—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines characterised by use in vehicles
    • F02M35/162—Motorcycles; All-terrain vehicles, e.g. quads, snowmobiles; Small vehicles, e.g. forklifts
    • 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
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
    • F02D2009/0201—Arrangements; Control features; Details thereof
    • F02D2009/0294—Throttle control device with provisions for actuating electric or electronic sensors

Definitions

  • the present invention relates to a throttle device, and more specifically to a throttle device suitable for a multiple throttle device that controls the opening degree by a common actuator for a plurality of throttle valves on an intake passage of an engine.
  • an electronic throttle device of a multi-cylinder internal combustion engine specifically a throttle device of an engine mounted on a two-wheeled vehicle
  • by-wire type multiple-line devices in which a plurality of throttle valves disposed in a plurality of intake passages in the vicinity of an intake port are driven and synchronized by a common electric actuator, are frequently used.
  • a throttle device of this type for example, a throttle device in which a throttle shaft supporting a throttle valve is driven by a motor with a speed reduction mechanism, while a rotation (an angular displacement) of a throttle shaft is transmitted to a sensor shaft arranged in parallel therewith by a gear, so that the angular displacement thereof is detected by a throttle position sensor as an opening degree of a throttle valve (See, for example, the Patent Document 1).
  • the gear for rotation transmission from the throttle shaft to the sensor shaft and the motor with the sensor shaft, the throttle position sensor, and the speed reduction mechanism are set on the center side in the direction in which the plurality of intake passages are adjacent (cylinder arrangement direction), so that the full width of the throttle body can be prevented from being increased by the gear train for rotational transmission from the motor to the throttle shaft being positioned at the end of the throttle body.
  • a throttle position sensor in which a brush and a magnet on the movable side are fixed to a rotor such as a sensor shaft, while a resistor and a Hall element on the fixed side are fixed to a fixing member such as a throttle body, and, for example, a brush slides on the resistor according to the rotation of the rotor, so that a voltage signal corresponding to the rotation of the throttle shaft can be output to the outside (see, for example, Patent Documents 2 and 3).
  • Patent Document 4 discloses a sensor on a lever connected to the rotation transmission member.
  • the throttle position sensor detects not the rotation of the throttle shaft directly connected to the throttle valve but the rotation of the sensor shaft interlocked with the throttle shaft through the gear, the detection accuracy of the angular position (rotational displacement) is not sufficiently improved due to error factors such as backlash and the like.
  • the throttle devices described in the Patent Document 2, 3 are so configured that magnet or the like is disposed at the shaft end of a rotor such as the throttle shaft or the sensor shaft and a sensor for detection of the rotation is disposed in a fixed side member opposed to the magnet or the like, sufficient accuracy of angular positional detection is not obtained, due to not only the full width of the throttle device in the alignment direction of the cylinders of the engine being increased but a small rotational radius of the detection portion and the like.
  • the present invention has been made to solve the above-described conventional problems, and for the purpose of providing a compact throttle device with a reduced full width of the throttle body of the throttle device that has a throttle position sensor with high accuracy of throttle opening degree detection.
  • a throttle device mountable on a multiple cylinder engine having an intake port, the throttle device comprising: a first throttle body having a first intake passage formed therein; a second throttle body having a second intake passage formed therein; a throttle valve rotatably provided respectively in the first and the second intake passages; a throttle shaft supporting the throttle valve; an actuator that drives the throttle valve to open and close through the throttle shaft; a rotation transmission mechanism interposed between the actuator and the throttle shaft; a displacement transmission mechanism connected to the throttle shaft and transmits a rotational displacement of the throttle shaft to a predetermined detection position; and a throttle opening degree sensor to detect the opening degree of the throttle valve the displacement transmission mechanism, wherein the rotation transmission mechanism is disposed at a position where the first throttle body and the second throttle body are adjacent, the actuator is disposed within an installation width of either one of the first and the second throttle bodies, and the throttle opening degree sensor is disposed within an installation width of the other one of the first and the
  • the rotation transmission mechanism is disposed in the vicinity of the position where the first and the second throttle bodies are adjacent to each other, and the actuator is disposed within an installation width of either one of the first and the second throttle bodies, and the throttle opening degree sensor is disposed within an installation width of the other one of the first and the second throttle bodies, respectively. Therefore, while the actuator is accommodated in one throttle body of the first and the second throttle bodies, the throttle opening degree sensor detecting the rotational displacement of the throttle shaft is disposed within the width of the other throttle body, so that the throttle opening degree sensor does not protrude from the end portion of the throttle body, thereby making it possible to reduce the width of the full width of the throttle device.
  • the throttle device is so configured that the displacement transmission mechanism is connected to the throttle shaft at an end portion side where the other one of the first and the second throttle bodies is not adjacent to the either one of the first and the second throttle bodies, and the throttle opening degree sensor is disposed in a intake passage side of the other one of the first and the second throttle bodies, with respect to the displacement transmission mechanism.
  • the throttle opening degree sensor and the rotation transmission mechanism are disposed to be spaced apart from each other in the axial direction of the throttle shaft, the throttle opening degree sensor avoids from protruding in a width direction from the end portion of the throttle body, so that the full width of the throttle device can be reduced.
  • the throttle device is preferably configured that the throttle valve includes a first throttle valve provided in the first intake passage and a second throttle valve provided in the second intake passage, and the first throttle valve and the second throttle valve are fixed to an identical throttle shaft.
  • a plurality of throttle valves disposed in the plurality of intake passages in the vicinity of the intake ports of the engine can be driven by the identical actuator in response to the throttle operation in a high response and accurate manner.
  • the throttle position sensor so as to protrude outside the full width range of the throttle body, thereby making it possible to miniaturize the throttle device and increase the degree of freedom of arrangement.
  • FIGS. 1-3 show a configuration of a throttle device according to the first embodiment of the present invention.
  • the throttle device 10 of the present embodiment is a multiple type throttle device mounted to a multi-cylinder internal combustion engine, for example, a four-cylinder engine 1 for a two-wheeled vehicle.
  • a plurality of cylinders 1c are mounted in a horizontally placed state to be adjacent to each other in the left-right direction (vehicle width direction) with respect to the body frame extending in the front-rear direction of the two-wheeled vehicle (the direction perpendicular to the paper surface of FIG. 2 ).
  • a pair of throttle devices 10 (10 A, 10 B in FIG. 3 ) are arranged in parallel to the engine 1 so as to be adjacent to each other on the left and right sides.
  • the throttle device 10 includes a throttle body portion 11a (a first throttle body) having an intake passage 12a (a first intake passage), a throttle body portion 11b (a second throttle body) having an intake passage 12b (a second intake passage), a common (same) throttle shaft 14 rotatably supported with respect to the throttle body portions 11a and 11b, a motor 15 capable of opening and closing the plurality of the throttle bulbs 13a and 13b through the throttle shaft 14 and a rotation transmission mechanism 20.
  • a throttle body portion 11a a first throttle body having an intake passage 12a (a first intake passage)
  • a throttle body portion 11b a second throttle body having an intake passage 12b (a second intake passage)
  • a common (same) throttle shaft 14 rotatably supported with respect to the throttle body portions 11a and 11b
  • a motor 15 capable of opening and closing the plurality of the throttle bulbs 13a and 13b through the throttle shaft 14 and a rotation transmission mechanism 20.
  • the rotation transmission mechanism 20 is disposed between the throttle body portions 11a and 11b, so as to be connected to the throttle shaft 14 in the vicinity of a width direction position F corresponding to a body joining position between the adjacent throttle valves 13a and 13b., so that the rotation transmission mechanism 20, disposed between the throttle body portions 11a and 11b, can transmit power to the substantially central position of the throttle shaft 14.
  • the throttle devices 10 are exemplified by a layout adapted to the four-cylinder engine 1.
  • the throttle body portions 11a, 11b respectively have an inner circumferential wall surface of a circular cross section and are arranged to be parallel to each other, and form a plurality of intake passages 12a, 12b (a plurality of branch passages in the case of a manifold) communicating with the plurality of intake ports 1a.
  • a plurality of throttle valves 13a, 13b are provided in the respective intake passages 12a, 12b, so that the opening degree of throttle valves 13a, 13b can be controlled.
  • FIG. 1 the shape of the body portion (unit body 11 to be described later) except for the plurality of throttle body portions 11a and 11b and a periphery of a rotational transmission path between the throttle body portions 11a and 11b are schematically shown with a quadrangle.
  • the plurality of throttle valves 13a and 13b are respectively of a type in which they are rotated in the valve opening and closing directions, for example a butterfly type, but may be of other types.
  • FIG. 3 shows one embodiment of a case that the throttle device 10 is applied to a four-cylinder engine 1 for a two-wheel vehicle.
  • a unit body 11 has a first segment body (first throttle body) 11f and a second segment body (second throttle body) 11s integrally connected in a direction (left-right direction in FIG. 3 ) that the throttle body portions 11a, 11b are adjacent to each other.
  • the first segment body 11f has a gear cover portion 11c covering and accommodating the rotation transmission mechanism 20 from one side and one of the throttle body portions 11a, 11b integrally connected.
  • the second segment body 11s has a motor cover 11d (accommodation portion) accommodating a motor 15 and the other one of the throttle bodies 11b, 11a integrally connected.
  • a plurality of fuel injection valves 41 capable of injecting fuel are disposed in the plurality of the intake passages 12a, 12b, with respect to each of the first segment body 11f and the second segment body 11s, while a fuel pipe 42 that distributes and supplies fuel to the plurality of the fuel injection valves 41 is disposed so as to connect the first segment body 11f and the second segment body 11s.
  • the throttle shaft 14 functions as a rotation center axis for rotatably supporting the plurality of throttle valves 13 in a fixed length region on both end sides thereof, and rotates in accordance with the rotational (angular variation) operation amount from the motor 15 through the rotation transmission mechanism 20 at its center portion in a shaft direction of the throttle shaft 14, thereby making it possible to control an opening degree of the throttle valves 13.
  • the motor 15 is an actuator, which is for example a pulse motor such as a step motor or the like, and is adapted to control the rotational angle position of the throttle shaft 14 corresponding to the opening position (throttle position) required for the throttle valves 13, according to the acceleration request input based on the accelerator operation of the two-wheeled vehicle.
  • a pulse motor such as a step motor or the like
  • the rotation transmission mechanism 20 includes a pinion 21 integrally mounted on the rotation output shaft of the motor 15, an idler gear 22 supported on the throttle body 11 so as to be rotatable around the axis while being engaged with the pinion 21, and a control gear 23 integrally connected to the throttle shaft 14 while being engaged with the idler gear 22.
  • the rotation transmission mechanism 20 is provided, between a pair of intake passages 12 adjacent to each other in the left-right direction of the vehicle, with a pinion 21, which is a gear serving as a first transmission member driven by the motor 15, and a control gear 23 which is a gear interlocked with the pinion gear 21 and serving as a second transmission member integrally connected to the throttle shaft 14 in the rotation direction, and is further provided with an idler gear 22 interposed between the both gears.
  • the pitch circle radius increases in the order of the pinion 21, the idler gear 22, and the control gear 23, which are interposed between the motor 15 and the throttle shaft 14, thereby making it possible to fulfill the deceleration function and the high precision positioning function.
  • the throttle device 10 further includes a movable side detection element 31 integrally (integrally in rotation direction) supported by one end of the throttle shaft 14 and a fixed side detection element 32 supported by the throttle body 11, and the movable side detection element 31 and the fixed side detection element 32 collectively constitute a position sensor 30 (throttle opening degree sensor) adapted to detect the angular displacement of the throttle shaft 14 and the control gear 23, which is the displacement of the specific portion in the rotation transmission mechanism 20 corresponding to the opening degree of the throttle valves 13a, 13b, and to output a position signal Pth.
  • the position signal Pth mentioned here represents a signal to control the opening degree of the throttle valves 13a, 13b by the motor 15 through the rotation transmission mechanism 20 according to the acceleration request based on the throttle operation of the two-wheel vehicle.
  • the movable side detection element 31 of the position sensor 30 is integrally supported by the control gear 23 through a plate-shaped lever member 33 integrally connected to one end portion of the throttle shaft 14, and a rotation radius of the movable side detection element 31 around the axis line of the throttle shaft 14 is set, for example, about a pitch circle radius of the control gear 23.
  • the movable side detection element 31 is disposed in an inner side, of the both sides of the plate-shaped lever member 33, opposing the side surface 23a on one end side in a teeth width (tooth trace) direction of the control gear 23 and constituted by a magnet (can be a magnetic pattern in which magnetic poles of N/S are alternately inverted) or a brush.
  • the fixed side detection element 32 of the position sensor 30 is constituted by a Hall element or a resistance coating film.
  • the lever member 33 is connected to the throttle shaft 14, to serve as a displacement transmission mechanism to transmit a rotational displacement of the throttle shaft 14 to a predetermined detection radial position by the position sensor 30.
  • the lever member 33 may be, for example, a rod-shaped or plate-shaped member that supports a brush serving as the movable side detection element 31, or a fan-shaped member or a plurality of radially arranged plate-shaped members that supports an arc-shaped magnetic pattern or the like.
  • the throttle device 10 is so configured that the throttle valves 13 in a plurality of intake passages 12 are rotatable supported through the throttle shaft 14 and opened and closed by the motor 15, and the rotation transmission mechanism 20 interposed between the motor 15 and the throttle shaft 14 has the control gear 23 serving as a transmission member integrally connected with the throttle shaft 14 in the rotational direction between the plurality of the intake passages 12.
  • the position sensor 30 that detects the rotational displacement of the throttle valves 13 and the throttle shaft 14 is constituted by the movable side detection element 31 integrally supported by the one end portion of the throttle shaft 14 in a rotational direction, and the fixed side detection element 32 disposed in a central side in the axial direction of the throttle shaft 14 with respect to the movable side detection element 31.
  • the rotational transmission mechanism 20 is provided with its rotational transmission portion (gear meshing portion) at a position where the first segment body 11 f and the second segment body 11s are adjacent to each other, and the motor 15 constituting an actuator is disposed within the installation width Ws of the second segment body 11s having its accommodation portion integrated with the throttle body portion 11b (which may be the throttle body portion 11a). Further, the second segment body 11s is integrally connected with a gear cover portion 11c covering the rotation transmission mechanism 20 from one surface side.
  • the position sensor 30 that outputs the position signal Pth for controlling the motor 15 is disposed within the installation width Wt of the first segment body 11f.
  • the lever member 33 serving as a displacement transmission mechanism is connected to the throttle shaft 14 in an end portion side where the first segment body 11f (the other one of the first and the second throttle bodies) is not adjacent to the second segment body 11s (either one), and under this state, the fixed side detection element 32 of the position sensor 30 is disposed, with respect to the lever member 33, in the side of a width region (intake passage forming width) in which the intake passage 12a (first intake passage) is formed in the first segment body 11f.
  • the throttle valves 13a, 13b includes a first throttle valve 13a provided in the first intake passage 12a and a second throttle valve 13b provided in the second intake passage 13b, and both throttle valves 13a, 13b are fixed to the identical throttle shaft 14, so that they are synchronously driven by the motor 15 via the rotation transmission mechanism 20.
  • the throttle shaft 14 rotates integrally with the control gear 23 that is engaged therewith, so that the degree of opening of the throttle valves changes. This means that the control of the rotational angle position of the throttle shaft 14 corresponding to the opening degree position required for the throttle valves 13 is executed.
  • the rotational angular position of the movable side detection element 31 integrally supported by the throttle shaft 14 in the rotation direction is detected by the fixed side detection element 32 on the side of the throttle body 11, as the rotational angular position of the throttle valves 13 and the throttle shaft 14, so that the opening degree of the throttle valves 13 is detected.
  • an interval d1 (See FIG. 1 ) between the two intake passages 12a, 12b which are disposed adjacent to each other in a cylinder arrangement direction of the engine 1 sandwiching the rotation transmission mechanism 20 and a width dimension of a thick portion (a portion surrounding the rotation transmission mechanism 20) of the unit body 11 corresponding to the d1 can be reduced.
  • two unit bodies 11 are combined to be adapted to the four-cylinder engine 1, so that an interval d2 (Refer to FIG. 2 and FIG. 3 ) between the two central throttle valve portions 11b can be narrowed. Furthermore, by combining the two unit bodies 11 to the four-cylinder engine 1, the degree of freedom of mounting also increases.
  • the rotation transmission mechanism 20 is disposed in the vicinity of the position where the first and the second segment bodies 11f, 11s are adjacent to each other, and the motor 15 is disposed within an installation width Ws of either one of the first and the second segment bodies 11f, 11s, and the throttle opening degree sensor 30 is disposed within an installation width Wt in the vehicle width direction of the other one of the first and the second segment bodies 11f, 11s, respectively.
  • the position sensor 30 detecting the rotational displacement of the throttle shaft 14 is disposed within the installation width Wt of the other segment body 11f, so that the position sensor 30 does not protrude from the end portion of the throttle body, thereby making it possible to reduce the width of the full width W1 of the throttle device.
  • the two motors 15 of both the rotation transmission mechanisms 20 of the left and right throttle devices 10A, 10B may be arranged in the installation width region Wi (Refer to FIG. 2 ) in the central side of the vehicle width direction, inclusive of the installation width Ws in the vehicle width direction of the left and right two segment bodies 11s.
  • a disposing position, particularly a rotation radius, of a movable side detection element 31 which displacement is detected by the position sensor 30 can be appropriately set, so that it becomes possible to secure the required throttle opening degree detection accuracy through extending the detection width of the rotational displacement of the movable side detection element 31, thereby to increase the degree of freedom of the disposition and the size of the fixed side detection element 32.
  • the lever member 33 of the position sensor 30 is connected to the throttle shaft 14 at an end portion side of the first segment body 11f, and the fixed side detection element 32 of the position sensor 30 is disposed in a side forming the intake passage 12a in the first segment body 11f.
  • the position sensor 30 avoids from protruding in a width direction from the end portion of the throttle body 11, so that the full width W1 of the throttle device can be reduced.
  • the throttle valves 13a, 13b are fixed to the identical throttle shaft 14, a plurality of the throttle valves 13a, 13b disposed in the plurality of intake passages 12a, 12b in the vicinity of the intake ports 1a of the engine 1 can be driven by the identical motor 15 in response to the throttle operation in a high response and accurate manner.
  • the position sensor 30 does not need to protrude out of the range of the full width W1 of the throttle body 11, so that the throttle device 10 can be made compact and the degree of freedom of arrangement can be increased.
  • FIG. 4 shows conventional throttle devices 110, 120 applied to the four cylinders of the engine.
  • the gear transmission mechanisms 112, 122 and the position sensors 113, 123 which perform rotational transmissions from the motors 111, 121 to the throttle shaft (without a reference numeral), are disposed at both ends of the respective throttle shafts.
  • the angular displacement of the throttle shaft can be directly detected by the position sensors 113, 123, and it is possible to exclude errors due to backlashes in a transmission path as in the case of providing a sensor on the side of the motors 111, 121.
  • the throttle device according to the present invention can contribute sufficiently to the miniaturization of the throttle device and the improvement of the mountability to the engine, while ensuring favorable detection accuracy, as compared with the comparison example of the conventional configuration.
  • FIG. 5 shows a configuration of the throttle device according to the second embodiment of the present invention.
  • the left and the right throttle devices 10A, 10B corresponding to the left and the right two cylinders of the engine 1 are reversed from the first embodiment shown in FIG. 2 , so that the motor 15 and the position sensor 30 of each of the throttle devices 10A, 10B are arranged in reverse.
  • FIG. 6 shows a configuration of a throttle device according to a third embodiment of the present invention.
  • the rotation transmission portion (gear meshing portion) of the rotation transmission mechanism 20 is disposed at the position where the first segment body 11f and the second segment body 11s are adjacent to each other, and left and right throttle devices 10A, 10B corresponding to left and right two cylinders of the engine 1 are linearly arranged.
  • the motor 15, constituting an actuator is disposed on the inner side in the vehicle width direction with respect to each of the rotation transmission mechanisms 20, and the respective position sensors 30 are arranged on the outer side in the vehicle width direction.
  • the motor cover portion 11d projects inward in the vehicle width direction from the width of the throttle body portion 11b, while in the first embodiment, the motor cover portion 11d accommodating the motor 15 is disposed within the width of the throttle body portion 11b which is the main portion of the second segment body 11s in the vehicle width direction.
  • both the motor cover portions 11d of the left and right throttle devices 10A, 10B are disposed within the installation width region Wi (refer to FIG. 6 ) in the center side in the vehicle width direction inclusive of the installation width Ws (refer to FIG. 2 ) of the second segment body 11s of the left and right throttle devices 10A, 10B, and does not protrude outward in the vehicle width direction.
  • the respective motors 15 of the left and right throttle devices 10A and 10B are shown on the same straight line, but they may be arranged on different parallel axes.
  • the throttle device is mounted on a four-cylinder engine or a three-cylinder engine, but the present invention is also applicable to a throttle device mounted on an engine of two or more cylinders.
  • the motor may be any electric actuator that can generate rotation.
  • the rotation transmission mechanism 20 is exemplified by employing three gears, the number of gears may be arbitrary, and the rotation transmission elements may be other than gears.
  • the motor 15 may be arranged to be inverted on both sides in the left-right direction of the vehicle body, considering the center of gravity in relationship with other equipment.
  • each of the first and the second segment bodies 11f, 11s may have a plurality of intake passages formed therein, and three or more throttle valves may be rotated by the same motor 15.
  • the present invention is useful for a multilateral throttle device in general suitable for a throttle device in which a plurality of throttle valves on the intake passage of an engine are controlled by an actuator in common.

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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)

Claims (3)

  1. Dispositif papillon pouvant être monté sur un moteur à plusieurs cylindres ayant un orifice d'admission, le dispositif papillon comprenant :
    un premier corps de papillon ayant un premier passage d'admission formé à l'intérieur ;
    un deuxième corps de papillon ayant un deuxième passage d'admission formé à l'intérieur ;
    un papillon des gaz prévu en rotation respectivement dans les premier et deuxième passages d'admission ;
    un axe de papillon supportant le papillon des gaz ;
    un actionneur qui entraîne l'ouverture et la fermeture du papillon des gaz par l'axe de papillon ;
    un mécanisme de transmission de rotation interposé entre l'actionneur et l'axe de papillon ;
    un élément de levier servant de mécanisme de transmission de déplacement relié à l'axe de papillon et transmet un déplacement en rotation de l'axe de papillon à une position de détection prédéterminée ; et
    un capteur de degré d'ouverture de papillon pour détecter le degré d'ouverture du papillon des gaz par l'élément de levier, dans lequel
    le mécanisme de transmission de rotation est disposé à une position où le premier corps de papillon et le deuxième corps de papillon sont adjacents,
    l'actionneur est disposé à l'intérieur d'une largeur d'installation de l'un des premier et deuxième corps de papillon, et
    le capteur de degré d'ouverture de papillon est disposé à l'intérieur d'une largeur d'installation de l'autre des premier et deuxième corps de papillon et ayant un élément de détection côté mobile relié d'un seul tenant à une extrémité de l'axe de papillon par l'élément de levier et un élément de détection côté fixe supporté sur l'autre des premier et deuxième corps de papillon,
    l'élément de levier est relié à l'axe de papillon au niveau d'un côté d'une partie d'extrémité où l'autre des premier et deuxième corps de papillon n'est pas adjacent à l'un des premier et deuxième corps de papillon, et l'élément de levier a une longueur radiale par laquelle il dispose l'élément de détection côté mobile, et
    le capteur de degré d'ouverture de papillon et le mécanisme de transmission de rotation sont situés à l'écart l'un de l'autre dans la direction axiale de l'axe de papillon.
  2. Dispositif papillon selon la revendication 1, dans lequel
    le capteur de degré d'ouverture de papillon est disposé dans un côté d'un passage d'admission dans l'autre des premier et deuxième corps de papillon, par rapport au mécanisme de transmission de déplacement.
  3. Dispositif papillon selon la revendication 1, dans lequel
    le papillon des gaz comporte un premier papillon des gaz prévu dans le premier passage d'admission et un deuxième papillon des gaz prévu dans le deuxième passage d'admission, et
    le premier papillon des gaz et le deuxième papillon des gaz sont fixés à un axe de papillon identique.
EP19152283.8A 2018-01-23 2019-01-17 Dispositif d'étranglement Active EP3514369B1 (fr)

Applications Claiming Priority (2)

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JP2018008806 2018-01-23
JP2018219634A JP7219063B2 (ja) 2018-01-23 2018-11-22 スロットル装置

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EP3514369A1 EP3514369A1 (fr) 2019-07-24
EP3514369B1 true EP3514369B1 (fr) 2020-12-23

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Publication number Priority date Publication date Assignee Title
JP7131917B2 (ja) * 2018-01-23 2022-09-06 株式会社ミクニ スロットル装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2517437C3 (de) 1975-04-19 1978-11-09 Bayer Ag, 5090 Leverkusen Verfahren zur Gewinnung von 13 - und 1,8 Dinitronaphthalin
US6202626B1 (en) * 1997-01-31 2001-03-20 Yamaha Hatsudoki Kabushiki Kaisha Engine having combustion control system
JP2003201883A (ja) 2002-01-07 2003-07-18 Keihin Corp スロットル開度センサー
JP4341811B2 (ja) * 2003-04-04 2009-10-14 本田技研工業株式会社 スロットルバルブ開度制御装置
JP2010019137A (ja) * 2008-07-09 2010-01-28 Yamaha Motor Co Ltd スロットル装置およびそれを備えた自動二輪車
JP5854639B2 (ja) * 2010-05-25 2016-02-09 株式会社ミクニ スロットル制御装置
JP2012159052A (ja) * 2011-02-02 2012-08-23 Mikuni Corp 吸気制御装置
JP5901254B2 (ja) * 2011-11-30 2016-04-06 株式会社ミクニ 多連スロットル装置

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None *

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