JP2009174543A - Throttle valve opening/closing control device of engine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a throttle valve opening/closing control device of an engine, ensuring the closing operation of a throttle valve by the closing operation of an accelerator operating member even during a trouble of a motor or the like by regulating the throttle valve of the engine to be opened over the operational amount of the accelerator operating member. <P>SOLUTION: In the throttle valve opening/closing control device of the engine, a return spring 10 for urging a throttle valve 8 of the engine in the closing direction is connected to the throttle valve, an accelerator operating member 2 to be manually operated so as to open/close the valve and a motor 12 operated to automatically open/close the valve 8 are connected to each other via a three-way transmission 11, and the three-way transmission 11 is constituted so that, when the accelerator operating member 2 is operated in the closing direction of the throttle valve 8, the closing operation is transmitted to the throttle valve 8 preferentially to the operation of the motor 12. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an engine throttle valve opening / closing control device in which an accelerator operating member that is manually operated to open / close the valve and a motor that operates to automatically open / close the valve are connected to the engine throttle valve. Regarding improvement.

  Such an engine throttle valve opening / closing control device is already known as disclosed in Patent Document 1 below.

Japanese Patent Publication No. 3-39176

  In such a throttle valve opening / closing control device, even if the motor or the control unit that controls it malfunctions, the motor may become stuck or move unexpectedly. It is necessary to be able to respond to the closing operation.

  The present invention has been made in view of such circumstances, and the throttle operation of the throttle operation member is closed even when a motor or the like malfunctions by restricting the throttle valve from opening beyond the operation amount of the accelerator operation member. It is an object of the present invention to provide a throttle valve opening / closing control device for an engine, which can ensure the closing operation of the throttle valve by the above-mentioned.

  In order to achieve the above-mentioned object, the present invention connects an accelerator operating member that is manually operated to open and close the throttle valve of an engine and a motor that operates to automatically open and close the valve. A first feature of the engine throttle valve opening / closing control device is that when the accelerator operating member is operated in the closing direction of the throttle valve, the closing operation is transmitted to the throttle valve in preference to the operation of the motor. And

  According to the first feature, the throttle valve is prevented from opening beyond the operation amount of the accelerator operation member, and the closing operation of the throttle valve by the operation of closing the accelerator operation member is ensured even when the motor or the like is broken. be able to.

  In addition, the present invention provides an engine throttle valve connected to a return spring that urges the valve in a closing direction, an accelerator operating member that is manually operated to open and close the valve, and an automatic opening and closing of the valve. In a throttle valve opening / closing control device for an engine, which is connected to a motor that operates as much as possible via a three-way transmission, a throttle valve that is concentrically opposed to the first bevel gear connected to the accelerator operating member, and the first bevel gear A second bevel gear coupled to the first carrier, a carrier rotatably disposed coaxially with the first and second bevel gears, and a bevel rotatably supported by the carrier and meshing with the first and second bevel gears Same as the pinion, carrier stopper means for preventing the carrier from rotating from a predetermined position in one direction, and the first and second bevel gears. The three-way transmission device is composed of a carrier restricting member that is rotatably disposed on the carrier and restricts the rotation range of the carrier in the other direction, and a motor that rotates the carrier restricting member is connected to the carrier restricting member. The second feature.

  According to this second feature, the opening of the accelerator operating member is invalidated by moving the carrier regulating member by the motor in the direction away from the carrier stopper means and regulating the rotation range of the carrier. The throttle valve opening can be automatically adjusted within the range of the operation amount of the accelerator operating member by moving the carrier forward and backward with respect to the carrier stopper means via the carrier restricting member by the motor. In addition, even when a motor or the like fails, the closing operation of the accelerator operating member is transmitted to the throttle valve with priority, and the closing of the throttle valve can be ensured by the return spring.

  In the above description, the accelerator operation member corresponds to an accelerator grip in an embodiment of the present invention described later, and the carrier stopper means corresponds to a first fixed stopper.

  As described above, according to both the first and second features of the present invention, the throttle valve is prevented from opening beyond the operation amount of the accelerator operation member, and the accelerator operation member is closed even when a motor or the like fails. The closing operation of the throttle valve by the operation can be ensured.

1 is a perspective view of a throttle valve opening / closing control device for a motorcycle engine according to the present invention. Front view of the three-way transmission in the throttle valve opening / closing control device (sectional view taken along line 2-2 in FIG. 3) 3-3 sectional view of FIG. Operating state explanatory diagram of the three-way transmission Illustration of different operating states of the three-way transmission Schematic diagram of the control unit Map diagram with multiple control units Characteristic diagram of relationship between accelerator grip rotation angle and throttle valve opening

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on one embodiment of the present invention shown in the accompanying drawings.

  First, in FIG. 1, a driving drum 4 is fixed to an accelerator grip 2 rotatably attached to a right end portion of a steering bar handle 1 of a motorcycle, and a driven drum 5 is fixed to an operating shaft 3 to be described later. 4 and 5 are connected to each other via a pair of upper and lower interlocking wires 6 and 6 ′ so that the operating shaft 3 rotates in conjunction with the accelerator grip 2.

  On the other hand, a throttle shaft 7 of a butterfly-type throttle valve 8 that opens and closes the intake passage 7a is rotatably supported on the throttle body 7 disposed in the intake system of the engine. The amount of intake is adjusted.

  Both ends of the valve shaft 9 protrude outward from the throttle body 7, and a return spring 10 comprising a torsion coil spring that biases the throttle valve 8 in the closing direction is connected to one end thereof. . The operating shaft 3 is rotatably arranged so as to be coaxial with the valve shaft 9, and the operating shaft 3 and the motor 12 are connected to the valve shaft 9 via the three-way transmission 11.

  The operating shaft 3 is connected to an accelerator operation amount sensor 23 that detects the rotation angle thereof, that is, the operation amount of the accelerator grip 2, and the valve shaft 9 is connected to a throttle opening sensor 24 that detects the opening of the throttle valve 8. Is done.

  The three-way transmission 11 will be described with reference to FIGS.

  The three-way transmission 11 includes a first bevel gear 13 fixed to the operating shaft 3, a second bevel gear 14 fixed to the valve shaft 9 so as to face the first bevel gear 13, and the operating shaft 3 or the valve shaft 9. , A carrier 15 rotatably supported on the carrier 15, one or a plurality of bevel pinions 16 that are rotatably supported by the carrier 15 and mesh with the first and second bevel gears 13 and 14, and the operating shaft 3. Or a carrier restricting member 17 that is supported on the valve shaft 9 so as to be relatively rotatable, and is opposed to one side surface of the carrier 15 and defines a rotation limit in one direction of the carrier 15. 21 is fixed to the casing 20 of the three-way transmission 11.

  The carrier restricting member 17 is a driven gear 17a that is supported so as to be relatively rotatable with respect to the operating shaft 3 or the valve shaft 9, and is provided on a side surface of the driven gear 17a so as to face the other side surface of the carrier 15, and A movable stopper 17b that regulates the rotation range of the carrier 15 in cooperation with the stopper 21 is engaged with the driven gear 17a. Therefore, the rotation of the carrier 15 can be restricted by rotating the carrier restricting member 17 by the operation of the motor 12.

  Further, the casing 20 of the three-way transmission 11 has a second facing the movable stopper 17b at a position away from the first fixed stopper 21 by sandwiching the carrier 15 and the movable stopper 17b with the first fixed stopper 21. A fixed stopper 22 is fixed.

  A control unit 25 is connected to the motor 12. As shown in FIG. 6, the control unit 25 receives motorcycle operation information such as the output signal of the accelerator operation amount sensor 23, the engine speed Ne, the transmission shift position Mp, the vehicle speed V, and the driving wheel speed Wv. Based on these conditions, a condition is determined, a map corresponding to the determination result is called, a target value of the throttle opening is set according to the called map, and the motor 12 is operated in the forward or reverse direction toward the target value. To do. In the meantime, the opening signal of the throttle valve 8 output from the throttle opening sensor 24 is fed back to the control unit 25, and the control unit 25 having received the signal indicates whether the actual opening of the throttle valve 8 has reached the target value. Whether or not the motor 12 is operated is determined.

  As shown in FIG. 7, a plurality of maps 1 to 3 having different throttle opening characteristics with respect to the accelerator operation amount are prepared as maps stored in the control unit 25.

  Next, the operation of this embodiment will be described.

  Now, as shown in FIG. 3, it is assumed that the carrier 15 is sandwiched between the first fixed stopper 21 and the movable stopper 17 b of the carrier regulating member 17. In this state, the carrier 15 cannot rotate in any direction. Therefore, when the first bevel gear 13 is rotated in the “open” direction or the “closed” direction by operating the accelerator grip 2, the bevel pinion 16 is moved on the carrier 15. Since only the rotation is performed and the second bevel gear 14 is rotated in the opposite direction to the first bevel gear 13 by the same angle, the throttle valve 8 connected to the second bevel gear 14 can be opened or closed. The throttle valve opening characteristic with respect to the accelerator grip operation amount during this period can be shown by a line A in FIG.

  Next, when the throttle valve 8 is held in the fully closed state by the biasing force of the return spring 10, as shown in FIG. 4, the carrier restricting member 17 is moved from the position shown in FIG. And the movable stopper 17b is separated from the carrier 15 by rotating by an angle α1 in the “open” direction. In this state, even if the first bevel gear 13 is rotated in the “open” direction by operating the accelerator grip 2, the bevel pinion 16 rotates and revolves until the carrier 15 contacts the movable stopper 17 b of the carrier regulating member 17. Since the second bevel gear 14 simply rolls, the second bevel gear 14 does not rotate and the fully closed state of the throttle valve 8 is not changed.

  When the carrier 15 comes into contact with the movable stopper 17b by rotating the first bevel gear 13 in the “open” direction by an angle β1, the rotation in the “open” direction of the first bevel gear 13 causes the bevel pinion 16 to rotate only. By this rotation, the second bevel gear 14 is rotated in the opposite direction to the first bevel gear 13 and the throttle valve 8 can be opened.

  If the first bevel gear 13 is returned to the fully closed position by closing the accelerator grip 2 from the opened state of the throttle valve 8, the second bevel gear 14 is first moved to the fully closed position of the throttle valve 8 only by the rotation of the bevel pinion 16. Then, the carrier regulating member 17 returns to the contact position with the first fixed stopper 21 (FIG. 3) by the rotation and revolution of the bevel pinion 16.

  The throttle valve opening characteristic with respect to the accelerator grip operation amount during this period can be shown by a line B in FIG.

  Next, the operation of the motor 12 further rotates the carrier restricting member 17 in the “open” direction of the first bevel gear 13, and when the rotation angle reaches an angle α 2 corresponding to the maximum operation amount β 2 of the accelerator grip 2, FIG. As shown in FIG. 3, the movable stopper 17b of the carrier restricting member 17 comes into contact with the second fixed stopper 22, and further rotation is restricted. Therefore, even if the accelerator grip 2 is fully operated in the fully open direction, the throttle valve 8 can no longer be opened, and the throttle valve 8 maintains the fully closed position by the urging force of the return spring 10.

  As is apparent from the above operation, the rotation angles α1 and α2 of the carrier regulating member 17 by the motor 12 produce the lost motion angles β1 and β2 of the accelerator grip 2. Therefore, if the carrier restricting member 17 is rotated in the “close” direction of the first bevel gear 13 by the operation of the motor 12 and the carrier 15 is pushed toward the first fixed stopper 21 by the movable stopper 17b, the first bevel gear 13 Because the second bevel gear 14 is rotated in the opening direction of the throttle valve 8 by the bevel pinion 16 that rolls toward the first fixed stopper 21, the throttle valve 8 can be opened, and the carrier 15 is moved to the first fixed stopper 21. When this is received, the opening limit of the throttle valve 8 is reached. Therefore, the throttle valve 8 does not open beyond the opening operation amount of the accelerator grip 2.

  On the contrary, if the carrier restricting member 17 is rotated in a direction away from the carrier 15 from the movable stopper 17b, the second bevel gear 14 is rotated in the closing direction of the throttle valve 8 by the action of the urging force of the return spring 10. The bevel pinion 16 rolls on the first bevel gear 13 in the direction opposite to the previous time, and when the carrier 15 catches up with the movable stopper 17b, the closing of the throttle valve 8 stops. Thus, the opening degree of the throttle valve 8 can be freely controlled by the operation of the motor 12. Therefore, by controlling the operation of the motor 12 by the control unit 25, for example, wheel traction control or vehicle speed cruise control can be performed.

  During the opening / closing control of the throttle valve 8 by the operation of the motor 12, if the motor 12 is stuck or if the motor 12 moves unexpectedly due to a failure of the control unit 25, the driver If the first bevel gear 13 is rotated in the “closed” direction by the closing operation, the bevel pinion 16 is immediately rotated and the second bevel gear 14 is attached to the return spring 10 regardless of the position of the movable stopper 17b. The throttle valve 8 can be preferentially closed by rotating in the closing direction of the throttle valve 8 in cooperation with the force.

  The present invention is not limited to the above embodiments, and various design changes can be made without departing from the scope of the gist of the present invention.

2. Accelerator operation member (accelerator grip)
8. Throttle valve 10 ... Return spring 11 ... Three-way transmission 12 ... Motor 13 ... First bevel gear 14 ... First 2 bevel gear 15 ··· carrier 16 ··· bevel pinion 17 ··· carrier regulating member 21 ··· carrier stopper means (first fixed stopper)

Claims (2)

An accelerator operating member (2) that is manually operated to open and close the valve (8) and a motor (12) that operates to automatically open and close the valve (8) are connected to the throttle valve (8) of the engine. In a connected engine throttle valve opening and closing control device,
When the accelerator operating member (2) is operated in the closing direction of the throttle valve (8), the closing operation is transmitted to the throttle valve (8) in preference to the operation of the motor (12). An engine throttle valve opening / closing control device. A return spring (10) for biasing the valve (8) in the closing direction is connected to the throttle valve (8) of the engine, and an accelerator operating member (2) manually operated to open and close the valve (8). And a throttle valve opening / closing control device for an engine in which a motor (12) that operates to automatically open and close the valve (8) is connected via a three-way transmission (11).
A first bevel gear (13) coupled to the accelerator operating member (2), a second bevel gear (14) coupled coaxially with the first bevel gear (13) and coupled to the throttle valve (8), A carrier (15) rotatably disposed coaxially with the first and second bevel gears (13, 14), and a carrier (15) rotatably supported by the first and second bevel gears (13, 14). 14) Bevel pinion (16) meshing with the carrier, carrier stopper means (21) for preventing rotation of the carrier (15) from a predetermined position in one direction, and coaxially with the first and second bevel gears (13, 14) The carrier restricting member (17) that is rotatably arranged to restrict the rotation range of the carrier (15) in the other direction constitutes the three-way transmission (11), and the carrier restricting member (17) Characterized in that connecting the motor (12) for rotating the record, the throttle valve opening and closing control apparatus for an engine.

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