WO2005054647A1 - 電子スロットル弁の制御システムおよび自動二輪車 - Google Patents
電子スロットル弁の制御システムおよび自動二輪車 Download PDFInfo
- Publication number
- WO2005054647A1 WO2005054647A1 PCT/JP2004/016609 JP2004016609W WO2005054647A1 WO 2005054647 A1 WO2005054647 A1 WO 2005054647A1 JP 2004016609 W JP2004016609 W JP 2004016609W WO 2005054647 A1 WO2005054647 A1 WO 2005054647A1
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- WO
- WIPO (PCT)
- Prior art keywords
- throttle valve
- control system
- electric motor
- rotation
- urging
- Prior art date
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Classifications
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- 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
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- 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
- F02D11/107—Safety-related aspects
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
-
- 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
- F02D2009/0277—Fail-safe mechanisms, e.g. with limp-home feature, to close throttle if actuator fails, or if control cable sticks or breaks
-
- 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
- F02D2011/101—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 characterised by the means for actuating the throttles
- F02D2011/102—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 characterised by the means for actuating the throttles at least one throttle being moved only by an electric actuator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
- F02D2041/2068—Output circuits, e.g. for controlling currents in command coils characterised by the circuit design or special circuit elements
- F02D2041/2072—Bridge circuits, i.e. the load being placed in the diagonal of a bridge to be controlled in both directions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/04—Engine intake system parameters
- F02D2200/0404—Throttle position
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/1012—Engine speed gradient
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Definitions
- the present invention relates to a control system for an electronic throttle valve, and more particularly to a control system for a throttle valve when an abnormality occurs in the control system.
- Electronic throttle valves control the opening of the throttle valve by electronic control and adjust the intake amount of the engine (internal combustion engine), so that low exhaust gas and low fuel consumption can be realized. It is starting to be adopted.
- Patent Document 1 discloses that, even without providing such a bypass line, by providing a spring that urges in the closing direction and a spring that urges in the opening direction, the relative urging force can be reduced.
- a method is disclosed in which a throttle valve is rotated by using the same to maintain a predetermined opening position.
- Patent Document 2 discloses that in order to prevent such a sudden rotation of the throttle valve, a throttle is provided by adding resistance to the rotation of the throttle valve which is biased in the closing direction by the spring. A method for gently closing a valve is disclosed. As a result, even if the vehicle is running in a low-speed gear where the engine output does not suddenly decrease, the behavior of the vehicle will not be jerky.
- a means (buffering means) for adding resistance to the rotation of the throttle valve an electronic damper function using an electro-viscous fluid is used.
- Patent document 3 discloses an example in which an electronic throttle valve is applied to a motorcycle.
- Patent document 1 Japanese Patent Application Laid-Open No. 2003-201866
- Patent Document 2 JP-A-6-248979
- Patent Document 3 JP-A-2002-106368
- Patent Document 2 The method described in Patent Document 2 is excellent in suppressing rapid rotation of the throttle valve.
- a method of urging the rotation of the throttle valve in the closing direction and a method of controlling the throttle valve are described.
- the means for adding resistance to rotation is attached to the valve shaft of the throttle valve. To install these mechanisms, a certain accommodation space must be secured around the valve shaft. No.
- the axial force of the throttle valve is extended to one of the left and right sides of the throttle valve, and the extended valve shaft is provided with a piston of an electronic damper (buffering means), Since the return spring is connected, it requires approximately the same storage space as the throttle body itself.
- the present invention has been made in view of the point of being powerful, and it is intended to surely suppress the rapid rotation of the throttle valve even when an abnormality occurs in a control system that does not increase the accommodation space. It is an object of the present invention to provide a control system of an electronic throttle valve capable of performing the above-mentioned.
- An electronic throttle valve control system includes a throttle valve that adjusts an intake amount of an internal combustion engine, an electric motor that drives the throttle valve, and a throttle valve that decelerates the rotation of the electric motor.
- An electronic throttle valve control system including a rotation reduction mechanism for controlling rotation of the throttle valve, wherein an urging mechanism for urging the throttle valve in a closing direction and the urging mechanism when an abnormality occurs in the control system.
- a damping mechanism for attenuating a speed at which the throttle valve rotates in the closing direction by the urging force, wherein at least one of the urging mechanism and the damping mechanism is connected to the rotation reduction mechanism.
- the urging mechanism is provided in the rotation reduction mechanism, and the damping mechanism is connected to the rotation reduction mechanism.
- the rotation reduction mechanism is connected to the electric motor, and when an abnormality occurs in the control system, the electric motor is switched to a regenerative state.
- An electric motor forms the damping mechanism.
- the internal combustion engine is a multi-cylinder internal combustion engine having a throttle valve for each cylinder, and the rotation reduction mechanism is disposed between the plurality of throttle valves.
- the rotation reduction mechanism includes a plurality of rotating bodies provided between the electric motor and the throttle valve, and the urging mechanism includes the plurality of rotating bodies. It is attached to at least one of the rotating bodies.
- the damping mechanism is configured by a piston that reciprocates in a cylinder, and the piston is connected to the rotation damping mechanism, and an abnormality occurs in the control system. At this time, the piston is controlled so that resistance is added to the reciprocating operation of the piston.
- the piston is connected to the rotating body closest to the throttle valve.
- the slot when an abnormality occurs in the control system, the slot is unloaded.
- the tor valve is held in a predetermined opening position after rotating in the closing direction by the urging force of the urging mechanism.
- the throttle valve further includes a second biasing mechanism for biasing the throttle valve in a closing direction or an opening direction.
- the biasing mechanism is configured by a mechanism having a spring.
- the rotating body is constituted by a reduction gear.
- a motorcycle according to the present invention includes the above-described electronic throttle valve control system.
- the urging mechanism that decelerates the rotation of the electric motor and urges the throttle valve in the closing direction to the rotation reduction mechanism that controls the rotation of the throttle valve.
- a damping mechanism that attenuates the speed at which the throttle valve rotates in the closing direction by the urging force of the urging mechanism is connected, so that when an abnormality occurs in the control system that does not increase the accommodation space, the throttle valve Abrupt rotation can be suppressed.
- a rotation reduction mechanism for reducing the rotation of the electric motor is essential. Therefore, the throttle valve is urged to the rotation reduction mechanism in the closing direction.
- an abnormality occurs in the control system that does not increase the accommodation space by connecting the biasing mechanism and the damping mechanism that attenuates the speed at which the throttle valve rotates in the closing direction by the biasing force of the biasing mechanism.
- the rapid rotation of the throttle valve can be suppressed.
- the action of the urging mechanism and the damping mechanism occurs in conjunction with the operation of the rotating and decelerating mechanism, the rapid rotation of the throttle valve can be reliably suppressed.
- the electric motor itself can be used as a damping mechanism by switching the electric motor connected to the rotation reduction mechanism to the regenerative state. It does not increase the storage space that does not need to be added.
- the piston connected to the rotation reduction mechanism can be used as a damping mechanism by adding resistance to the reciprocating operation of the piston, thereby ensuring a reliable operation.
- the effect of the damping mechanism can be produced.
- the rotation reduction mechanism is composed of a plurality of rotating bodies (reduction gears, etc.)
- connecting the piston to the rotating body closest to the throttle valve allows the piston to rotate as the rotating body rotates.
- the range of the reciprocating operation can be minimized, and the damping mechanism can be made compact.
- FIG. 1 is a diagram showing a configuration of a control system for an electronic throttle valve according to the present invention.
- FIG. 2 is a side view showing a configuration of a rotation reduction mechanism having an urging mechanism according to the present invention.
- FIG. 3 is a diagram showing a configuration of a control circuit of an electric motor according to the present invention, where (a) shows a case where the electric motor performs a forward rotation operation, (b) shows a case where the electric motor performs a reverse rotation operation, and (c) shows a case where the electric motor performs a reverse rotation operation. It is a figure showing each case where a motor is in a regenerative state.
- FIG. 4 is a diagram equivalently showing a configuration of a control system for an electronic throttle valve of the present invention.
- FIG. 5 is a sectional view showing an opening position of a throttle valve according to the present invention.
- FIG. 6 is a graph showing a change in the opening degree of the throttle valve with respect to time in the present invention.
- FIG. 7 is a diagram showing another configuration of the electronic throttle valve control system according to the present invention.
- FIG. 8 is a diagram showing a configuration of a throttle mechanism according to the present invention.
- FIG. 9 is a cross-sectional view of an electric drive mechanism including a biasing mechanism and a damping mechanism according to the present invention.
- FIG. 10 is a block diagram showing a configuration of a control system of a throttle mechanism according to the present invention.
- FIG. 11 is a diagram showing a configuration of a rule unit according to the present invention.
- FIG. 12 is a diagram showing a configuration of a control circuit for an electric motor according to the present invention.
- the electronic throttle valve is required to have a fail-safe function that is activated when an abnormality occurs in the control system of the electronic throttle valve, which is beneficial in achieving low exhaust gas and low fuel consumption.
- a fail-safe function that is activated when an abnormality occurs in the control system of the electronic throttle valve, which is beneficial in achieving low exhaust gas and low fuel consumption.
- motorcycles are lighter in weight than passenger cars, so if the full-safety function used in passenger cars is applied to motorcycles as they are, sudden changes in the behavior of the powered vehicle will be noticeable to the driver of the car. It feels like a motorcycle rider.
- the inventor of the present application considers that the restriction of the accommodation space becomes an obstacle in applying the electronic throttle valve to the motorcycle, and without increasing the accommodation space, the control system for the electronic throttle valve is not increased. As a result of studying whether or not the buffer means can be provided, the present invention has been reached.
- FIG. 1 is a diagram schematically showing a basic configuration of a control system for an electronic throttle valve according to the present embodiment.
- a throttle valve 10 for adjusting an intake air amount of an internal combustion engine (not shown) is provided in a throttle body 11, and an electric motor 20 for driving the throttle valve 10 is provided with a rotary reduction gear. It is connected to the valve shaft 12 of the throttle valve 10 via a structure 30.
- the rotation reduction mechanism 30 controls the rotation of the throttle valve 10 by reducing the rotation of the electric motor 20, and in the example shown in FIG. 1, three types of rotating bodies 30a, 30b, having different reduction ratios are provided. It is composed of 30c.
- the forward / reverse rotation of the electric motor 20 is controlled by the control unit 21, whereby the opening / closing operation of the throttle valve 10 is controlled.
- As the rotating bodies 30a, 30b, 30c for example, a reduction gear, a link, or the like can be used.
- FIG. 2 is a side view of a part (30b, 30c) of the rotating body when the directional force of the valve shaft 12 of the throttle valve 10 is viewed.
- a biasing mechanism (for example, a spring or the like) 31 is attached so as to wind around the rotation axis of the rotating body 30c, and one end 31a is locked by a pin 32 provided on the rotating body 30c, The other end 31b is supported outside, such as the throttle body 11 (not shown).
- the biasing mechanism 31 arranged in this way applies a biasing force for rotating the valve shaft 12 (not shown) in the closing direction via the rotating body 30c.
- the urging mechanism 31 configured as described above can be integrated with a rotation reduction mechanism that transmits the rotation of the electric motor 20 to the valve shaft of the throttle valve. There is no need to reserve extra storage space for installation. In addition, a return spring for preventing backlash of the rotation reduction mechanism can be used as the urging mechanism 31.
- the rotation reduction mechanism 30 includes a plurality of rotating bodies, the urging mechanism 31 only needs to be attached to at least one rotating body.
- the overall throttle mechanism can be made compact. be able to.
- control unit 21 controls the speed at which the throttle valve 10 rotates in the closing direction by the urging force of the urging mechanism 31 by turning the electric motor 20 into the regenerative state. Control.
- the electric motor in the regenerative state acts as a buffer for sudden rotation of the throttle valve.
- FIG. 3 (a)-(c) shows a control circuit that switches the electric motor 20 to the regenerative state when an abnormality occurs in the control system in the control section 21.
- Fig. 3 (a) shows a case where the electric motor 20 performs forward rotation. In this case, the FETs 1 and 4 are turned on and the FETs 2 and 3 are turned off, so that the electric current flows in the path indicated by the arrow.
- FIG. 3B shows a case where the electric motor 20 performs a reverse rotation operation. In this case, when the FETs 2 and 3 are turned on and the FETs 1 and 4 are turned off, a current flows in a path indicated by an arrow. As described above, by switching the direction of the current flowing through the electric motor 20, the rotation direction of the electric motor 20 is changed, whereby the opening / closing operation of the throttle valve 10 is controlled.
- FIG. 3 (c) shows a case where the electric motor 20 is in a regenerative state.
- the FETs 1 and 2 are turned on, and the FETs 3 and 4 are turned off, thereby indicating with an arrow.
- Current flows in the path.
- the electric motor 20 operates as a generator, generates a back electromotive force, and a current flows in the opposite direction. Due to this current, a torque in a direction opposite to the rotation direction of the electric motor 20 is generated, and a braking operation for suppressing the rotation of the electric motor 20 is performed.
- the electric motor 20 can be brought into a regenerative state by turning off the FETs 1 and 2 and turning on the FETs 3 and 4. Further, when the electric motor 20 is brought into the regenerative state, it is preferable to shut off the power supplied to the electric motor.
- the fail-safe function of the present invention is performed by switching the electric motor 20 to the regenerative state. This operation is performed by a common control circuit that controls the normal operation of the electric motor 20. Control can be performed using a circuit. That is, the fail-safe function according to the present invention allows the electric motor 20 that drives the throttle valve 10 to act as a buffer for sudden rotation of the throttle valve 10 and controls the buffer to correct the electric motor 20. It can be executed by using the control circuit that controls reverse rotation as it is, so there is no need to add any new mechanism to the conventional electronic throttle valve control system.
- FIG. 4 shows an equivalent configuration of the electronic throttle valve control system shown in FIG. 1 and FIG.
- the rotation of the throttle valve 10 disposed in the throttle body 11 is driven by the electric motor 20 connected to the throttle valve 10, and when an abnormality occurs in the control system, the throttle valve is closed in the closing direction.
- An urging mechanism 31 for urging and a damping mechanism 38 for damping the speed at which the throttle valve 10 rotates in the closing direction by the urging force of the urging mechanism 31 cooperate with each other. As a result, the throttle valve 10 slowly rotates in the closing direction and is kept at a predetermined opening position.
- a characteristic point here is that at least one of the urging mechanism 31 and the damping mechanism 38 is connected to the rotation reduction mechanism 30. That is, the action of the urging mechanism 31 or the Z and the damping mechanism 38 occurs in accordance with the operation of the rotation speed reduction mechanism 30, so that the effect of the urging mechanism or the Z and the damping mechanism can be reliably obtained.
- the electric motor 20 when an abnormality occurs in the control system, the electric motor 20 itself forms the damping mechanism 38 by bringing the electric motor 20 into a regenerative state.
- FIG. 5 is a cross-sectional view showing an opening position of the throttle valve 10 in the throttle body 11 as viewed from a direction force parallel to the valve shaft 12 of the throttle valve 10.
- the solid line indicates the opening position 1 Oa of the throttle valve 10 during normal operation.
- the urging force of the urging mechanism 31 is adjusted in advance so as to have an opening degree at which the internal combustion engine can maintain the limp-home state at the predetermined opening position 10b shown in FIG.
- “Evacuation traveling state” refers to a state in which the vehicle can at least be evacuated to a safe place such as a roadside even when the electric control of the electronic throttle valve is cut off, and includes an idling state.
- FIG. 6 shows that the throttle valve 10 is rotated in the closing direction from the opening ⁇ at the time of occurrence of an abnormality in the control system to the predetermined opening ⁇ .
- the throttle valve when an abnormality has occurred in the control system, the throttle valve is rotated in the closing direction and held at the predetermined opening position. If the vehicle can be maintained in the limp mode, the throttle valve may be rotated to the fully closed state. For example, by providing a separate bypass line in the throttle body, if an abnormality occurs in the control system, if a certain amount of air is sucked into the internal combustion engine through the bypass line, the internal combustion engine can be evacuated. It can be maintained in a running state. In the case of a motorcycle, the body of the motorcycle is light. Therefore, if the vehicle can be pushed and moved even when the throttle valve is fully closed, there is no particular need to provide a bypass line.
- a curve A shown by a dotted line shows a case where the throttle valve 10 is rotated in the closing direction only by the urging force of the conventional urging mechanism 31, and in a very short time (t), Predetermined opening ⁇
- a curve B shown by a solid line shows a case where the electric motor 20 is rotated in the closing direction while the rotation speed of the throttle valve 10 is suppressed by setting the electric motor 20 in the regenerative state.
- the predetermined opening ⁇ has been reached over (t).
- FIG. 7 is a diagram showing an example in which a so-called air damper is used as the damping mechanism 38.
- One end of a piston 33 that reciprocates in the cylinder 34 is connected to the rotating body 30c.
- An air vent hole 35 and an opening 36 are formed at an end of the cylinder 34, and an electromagnetic valve 37 is attached to the opening 36.
- the magnitude of the resistance added to the reciprocating operation of the piston 34 in the cylinder 34 is controlled by the opening and closing operation of the electromagnetic valve 37.
- the electromagnetic valve 37 is open, so that no resistance is added to the reciprocating operation of the piston 34 in conjunction with the rotation of the rotating body 30c.
- the electromagnetic valve 37 is closed, thereby adding resistance to the reciprocating operation of the piston 34.
- the piston 34 is preferably connected to the rotating body 30c closest to the throttle valve 10.
- the rotation reduction mechanism 30 for reducing the rotation of the electric motor 20 is generally configured in combination with a plurality of rotation bodies, and the rotation body 30c closest to the throttle valve 10 has the smallest rotation range. Therefore, the range of the reciprocating operation of the piston 33 connected to the rotating body 30c is also minimized, so that the air damper as the reduction mechanism can be made more compact.
- the force required to attenuate the speed at which the throttle valve rotates in the closing direction (damping force) ) Is determined by the relative relationship with the force for urging the throttle valve in the closing direction by the urging mechanism. Therefore, when the urging force is small, the damping force may be small. Therefore, even in the normal operation of the electronic throttle valve, if the applied damping force is smaller than the torque of the electric motor, the normal operation does not hinder even if the damping mechanism is always connected to the rotation reduction mechanism. In this case, for example, when an air damper is used as the damping mechanism, if the air vent hole 35 is set to an appropriate size, the opening and closing operation of the opening 36 by the electromagnetic valve 37 is not required, and the configuration of the damping mechanism is simplified. It can be something.
- FIG. 8 is a diagram showing a configuration of a throttle mechanism 40 connected to an intake port of each cylinder of an engine unit (not shown).
- the throttle body 41 has a cylindrical shape.
- the throttle valve 42 has a disc-shaped valve plate 42b disposed in each throttle body 41, and one throttle valve 42b disposed so as to pass through the throttle body 41.
- the left and right throttle bodies 41 in FIG. 8 are connected to each other by a connection boss 4 Id, and an electric drive mechanism 43 is provided between the center throttle bodies 41.
- the electric drive mechanism 43 arranges the electric motor 43a so that its rotation axis is parallel to the valve shaft 42a, and controls the rotation of a drive gear 43b mounted on the rotation shaft of the electric motor 43a to an intermediate large gear.
- the power is transmitted to a fan-shaped valve shaft driving gear 43e fixed to the valve shaft 42a via the small intermediate gear 43d.
- the valve shaft 42a is configured to be rotationally driven by the valve shaft driving gear 43e.
- the electric drive mechanism 43 is housed in a case 43f formed separately from the throttle body 41.
- a throttle valve opening sensor 44 for detecting the opening of the throttle valve 42 is attached to the right end protruding outward of the valve shaft 42a.
- a disc-shaped boss 45a of the free arm 45 is mounted on the left end so as to be relatively rotatable.
- the arm 45b (not shown) of the free arm 45 is connected to the intermediate pulley via the link plate 46. Connected to 47.
- This intermediate pulley 47 is connected to a throttle grip of a steering handle via a throttle cable 48. Connected to 49.
- the link plate 46, the intermediate pulley 47, the throttle cable 48, and the throttle grip 49 constitute a throttle operating mechanism 60 that manually opens and closes the throttle valve 42 in accordance with the operation amount of the rider's throttle grip 49.
- the electric drive mechanism 43 and the throttle operation mechanism 60 function as a drive source.
- the intermediate pulley 47 is fixedly supported at the left end of the intermediate shaft 47a so as to rotate therewith.
- the intermediate shaft 47a is rotatable by a boss 41c formed on the throttle body 41 at the left end. It is pivotally supported.
- a throttle grip opening sensor 50 for detecting an operation angle of the throttle grip 49 is mounted.
- a fuel injection valve 51 is provided below each throttle body 41 for each cylinder, and a common fuel supply pipe 52 is connected to a fuel introduction portion of each fuel injection valve 51.
- FIG. 9 is a diagram showing a configuration in which the electric drive mechanism 43 is provided with a spring 31 as an urging mechanism and an air damper 70 as a damping mechanism.
- the spring 31 is attached so as to wind around the rotation axis of the valve shaft driving gear 43e, and one end of the spring 31 is engaged with a pin 32 provided on the valve shaft driving gear 43e. The other end is supported by the case 43f or a throttle body (not shown).
- the spring 31 arranged in this manner applies an urging force for rotating the valve shaft 42a in the closing direction via the valve shaft driving gear 43e.
- the piston 73 of the air damper 70 has a rod 71 supported by the valve shaft driving gear 43e, and an end of the cylinder 72 connected to the case 43f.
- the drive mechanism 43 is integrated.
- An air vent hole 74 and an opening 76 are formed at the end of the cylinder 72, and an electromagnetic valve 75 is attached to the opening 76.
- the magnitude of the resistance added to the reciprocating operation of the piston 73 in the cylinder 72 is controlled by the opening and closing operation of the electromagnetic valve 75.
- the electromagnetic valve 75 is open, so that no resistance is added to the reciprocating operation of the piston 73 interlocked with the rotation of the valve shaft driving gear 43e.
- the electromagnetic valve 75 is closed, thereby adding resistance to the reciprocating operation of the piston 73.
- the air vent hole 74 is formed small enough to add resistance to the reciprocating operation of the piston 73, and the opening 76 is large enough not to add resistance to the reciprocating operation of the piston 73 when opened. Is formed.
- the rod 71 of the piston 73 is connected to a valve shaft driving gear 43e which is a rotation reduction mechanism closest to the throttle valve 10. Since the valve shaft driving gear 43e closest to the throttle valve 10 has the smallest rotation range, the range of the reciprocating motion of the piston 73 connected to the valve shaft driving gear 43e can be minimized, thereby reducing the air damper 70. It can be more compact.
- FIG. 10 is a block diagram showing a configuration of a control system of the throttle mechanism.
- the amount of intake air introduced into each cylinder is adjusted by throttle mechanism 40, and the amount of fuel injection in each cylinder is adjusted by fuel injection valve 51, thereby adjusting the output power.
- the valve shaft 42a is rotated by the driving force of the electric motor 43a in the electric drive mechanism 43, and the throttle valve 42 is opened and closed.
- the throttle valve opening sensor 44 detects the opening of the throttle valve 42 and outputs a throttle opening detection signal to the control unit 100.
- the electric motor 43a in the electric drive mechanism 43 generates a driving force according to a throttle driving signal input from the control unit 100, and drives the driving gear 43b, the intermediate large gear 43c, and the intermediate small gear 43d by the driving force. Through this, the valve shaft 42a in the throttle mechanism 40 is rotated.
- the throttle operation mechanism 60 manually opens and closes the throttle valve 42 according to the operation amount of the rider's throttle grip 49 when the driving force of the electric drive mechanism 43 is cut off.
- Vehicle speed sensor 103 detects the rotation speed of rear wheel 115, and outputs a vehicle speed signal corresponding to the rotation speed to control unit 100.
- the throttle grip opening sensor 50 detects the operation angle of the throttle grip 49 and outputs a throttle operation angle detection signal to the control unit 100.
- the shift switch 105 outputs a shift position signal to the control unit 100 in response to a manual operation of the rider.
- FIG. 11 is a block diagram of the control unit 100.
- the circuit includes a plurality of input circuits 201 and 202, a CPU 205, a drive circuit 206, an output monitoring circuit 208, and a motor power cutoff circuit 214.
- the input circuit 201 outputs a throttle opening detection signal input from the throttle valve opening sensor 44 to the CPU 205.
- the input circuit 202 outputs a throttle operation angle detection signal input from the throttle grip opening sensor 50 to the CPU 205.
- the CPU 205 outputs a control signal for controlling each operation of the electric motor 43a in the electric drive mechanism 43 to the drive circuit 206 based on various signals input from the input circuits 201 and 202, respectively.
- the CPU 205 has a function of monitoring its own operation state and detecting an operation abnormality. When detecting the operation abnormality, the CPU 205 outputs a cutoff signal to each motor power cutoff circuit 214 and A mode switching signal for shifting the electric motor 43a to the brake mode is output to the drive circuit 206.
- the CPU 205 has a function of detecting an abnormality of each of the sensors 44 and 50 based on each signal input from the input circuits 201 and 202, respectively.
- a signal is output to each motor power cutoff circuit 214 and a mode switching signal for shifting the electric motor 43a to the brake mode is output to each drive circuit 206.
- the CPU 205 has a function of detecting an abnormality of the drive circuit 206 and the electric motor 43a based on a signal input from the output monitoring circuit 208.
- the mode switching signal Is output to the drive circuit 206.
- the drive circuit 206 forms an H-bridge circuit composed of FETs 1-4 (see FIG. 3).
- the FETs 1 and 4 are turned on, the FETs 2 and 3 are turned off, and the drive current flows through the path shown in FIG.
- the drive circuit 206 and the electric motor operate in reverse, the FETs 2 and 3 are turned on and the FETs 1 and 4 are turned off, and a drive current flows through the path shown in FIG.
- the FETs 1 and 2 are turned on, the FETs 3 and 4 are turned off, and a drive current flows through a path shown in FIG. 3 (c).
- the electric motor 43a operates as a generator, generates a back electromotive voltage, and a current flows in the opposite direction. Due to this current, a torque is generated in a direction opposite to the original rotation direction of the electric motor 43a, and a braking operation is performed.
- the drive circuit 206 controls ON / OFF of the FETs 1-4 based on each control signal input from the CPU 205 to control the forward rotation operation and the reverse rotation operation of each electric motor 43a. Also, drive The driving circuit 206 controls the FETs 1-4 on and off based on the mode switching signal input from the CPU 205 to control the braking operation of each electric motor 43a.
- the output monitoring circuit 208 detects a drive current flowing between the drive circuit 206 and the electric motor 43a, and outputs a drive current signal to the CPU 205.
- the motor power supply cutoff circuit 214 supplies the motor power supply to the drive circuit 206, and cuts off the motor power supply to the drive circuit 206 when an abnormal signal is input from the CPU 205.
- the throttle valve opening sensor 44 and the vehicle speed sensor 103 function as a detection unit that detects an operation state of the vehicle.
- the operation angle is detected by the throttle grip opening sensor 50, and the throttle operation angle detection signal is input to the CPU 205 in the control unit 100. Further, the opening of the throttle valve 42 is detected by a throttle valve opening sensor 44, and the throttle opening detection signal is input to the CPU 205 in the control unit 100.
- the CPU 205 controls the electric drive in the electric drive mechanism 43 based on the throttle operation angle detection signal input from the throttle grip opening sensor 50 and the throttle opening detection signal input from the throttle valve opening sensor 44.
- a control signal for controlling the operation of the motor 43a is output to the drive circuit 206.
- the drive circuit 206 performs ON / OFF control of the FETs 1-4 based on the control signal input from the CPU 205 to cause the electric motor 43a to perform normal rotation operation or reverse rotation operation, and to set the throttle valve 42 to a desired opening position. Open and close.
- the CPU 205 When detecting an abnormality in the operation state, the CPU 205 outputs a cutoff signal to each motor power supply cutoff circuit 214 and outputs a mode switching signal to the drive circuit 206.
- Cross circuit 214 shielding the motor power, when shutdown signal from the CPU205 is input, motor supplies the drive circuit 206 - to cut off the motor power 0
- the drive circuit 206 interrupts the supply of the motor power by the motor power cutoff circuit 214.
- the mode switch signal is input from the CPU 205, the FETs 1 and 2 are turned on, the FETs 3 and 4 are turned off, and the operation shifts to the brake operation, as shown in FIG. Suppresses the sudden movement of.
- the CPU 205 When detecting an abnormality in the throttle opening detection signal or the throttle operation angle detection signal input from the input circuit 201 or the input circuit 202, the CPU 205 detects an abnormality in the throttle valve opening sensor 44 or the throttle grip opening sensor 50. Is determined, and a cutoff signal is output to the motor power cutoff circuit 214, and a mode switching signal is output to the drive circuit 206. When a cutoff signal is input from the CPU 205, the motor power cutoff circuit 214 cuts off the motor power supplied to the drive circuit 206.
- the supply of the motor power to the drive circuit 206 that drives the electric motor 43a is interrupted when an abnormality occurs in each of the sensors 44 and 50. Thereafter, the drive circuit 206 switches each electric motor 43a to a braking operation.
- the drive circuit shows an H-bridge circuit configuration composed of FETs 1-4.
- FET 1-4 fails, it may be difficult to shift to braking operation.
- a brake operation relay circuit 300 it is conceivable to connect a brake operation relay circuit 300 to the H-bridge circuit as shown in FIG.
- the relay circuit 300 is operated, the electric motor can be reliably braked. As a result, the reliability of the brake operation can be improved.
- the element used for the relay circuit 300 is not limited to a relay, and for example, a semiconductor element capable of performing a switching operation may be used.
- the present invention is applied to a vehicle using an engine unit as a power source.
- the present invention is not limited to this.
- the present invention is also applicable to a vehicle using an electric motor as a power source.
- the throttle mechanism includes the electric drive mechanism 143 and the throttle operation mechanism 60 as drive sources, but a configuration may be employed in which a spring that biases the throttle valve is included as a drive source.
- the present invention is not limited to this. When an abnormality occurs, the control system of the present invention can be applied.
- the motorcycle in the above-described embodiment means a motorcycle, and includes a motor-operated bicycle (motorbike) and a starter, and specifically refers to a vehicle that can turn by tilting the vehicle body. Therefore, even if at least one of the front wheel and the rear wheel is two or more wheels and the number of tires is counted as a tricycle or a four-wheel vehicle (or more), it can be included in the “motorcycle”.
- motorbike motor-operated bicycle
- starter specifically refers to a vehicle that can turn by tilting the vehicle body. Therefore, even if at least one of the front wheel and the rear wheel is two or more wheels and the number of tires is counted as a tricycle or a four-wheel vehicle (or more), it can be included in the “motorcycle”.
- an electronic throttle valve control system capable of suppressing rapid rotation of a throttle valve even when an abnormality occurs in a control system that does not increase the accommodation space. it can.
Landscapes
- 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)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005515891A JPWO2005054647A1 (ja) | 2003-11-12 | 2004-11-09 | 電子スロットル弁の制御システムおよび自動二輪車 |
US10/579,010 US7461630B2 (en) | 2003-11-12 | 2004-11-09 | Electronic throttle valve control system and two-wheeled motor vehicle |
EP04819746A EP1691059B1 (en) | 2003-11-12 | 2004-11-09 | Control system of electronic throttle valve and motorcycle |
ES04819746T ES2381005T3 (es) | 2003-11-12 | 2004-11-09 | Sistema de control de válvula de mariposa electrónica y motocicleta |
AT04819746T ATE549497T1 (de) | 2003-11-12 | 2004-11-09 | Steuersystem für elektronisches drosselventil und motorrad |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003382033 | 2003-11-12 | ||
JP2003-382033 | 2003-11-12 | ||
JP2004113570 | 2004-04-07 | ||
JP2004-113570 | 2004-04-07 |
Publications (1)
Publication Number | Publication Date |
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WO2005054647A1 true WO2005054647A1 (ja) | 2005-06-16 |
Family
ID=34593935
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/016609 WO2005054647A1 (ja) | 2003-11-12 | 2004-11-09 | 電子スロットル弁の制御システムおよび自動二輪車 |
PCT/JP2004/016608 WO2005047671A1 (ja) | 2003-11-12 | 2004-11-09 | 電子スロットル弁の制御システムおよび自動二輪車 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/016608 WO2005047671A1 (ja) | 2003-11-12 | 2004-11-09 | 電子スロットル弁の制御システムおよび自動二輪車 |
Country Status (7)
Country | Link |
---|---|
US (2) | US7461630B2 (ja) |
EP (2) | EP1691059B1 (ja) |
JP (3) | JPWO2005054647A1 (ja) |
AT (1) | ATE549497T1 (ja) |
ES (2) | ES2564166T3 (ja) |
TW (2) | TW200519286A (ja) |
WO (2) | WO2005054647A1 (ja) |
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US7315779B1 (en) | 2006-12-22 | 2008-01-01 | Bombardier Recreational Products Inc. | Vehicle speed limiter |
US7380538B1 (en) | 2006-12-22 | 2008-06-03 | Bombardier Recreational Products Inc. | Reverse operation of a vehicle |
US7530345B1 (en) | 2006-12-22 | 2009-05-12 | Bombardier Recreational Products Inc. | Vehicle cruise control |
JP2012052458A (ja) * | 2010-08-31 | 2012-03-15 | Suzuki Motor Corp | エンジンのスロットル装置 |
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JP2011256878A (ja) * | 2005-08-30 | 2011-12-22 | Yamaha Motor Co Ltd | 鞍乗型車両用の駆動力制御装置、その制御方法、および鞍乗型車両 |
JP4732119B2 (ja) * | 2005-10-18 | 2011-07-27 | 本田技研工業株式会社 | 鞍乗り型車両における吸気制御装置 |
JP5053159B2 (ja) * | 2007-09-18 | 2012-10-17 | ヤマハ発動機株式会社 | 鞍乗型車両 |
US8175766B2 (en) * | 2009-06-25 | 2012-05-08 | Brammo, Inc. | Throttle control method and system |
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JP5854639B2 (ja) * | 2010-05-25 | 2016-02-09 | 株式会社ミクニ | スロットル制御装置 |
US8534397B2 (en) | 2010-06-03 | 2013-09-17 | Polaris Industries Inc. | Electronic throttle control |
JP5025778B2 (ja) | 2010-10-18 | 2012-09-12 | 三菱電機株式会社 | 電子スロットル制御装置 |
JP5721256B2 (ja) * | 2011-01-24 | 2015-05-20 | 本田技研工業株式会社 | 電動車両の制御装置 |
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BR112017008825A2 (pt) | 2014-10-31 | 2018-03-27 | Polaris Inc | método e sistema de direção assistida para um veículo, métodos para controlar um sistema de direção assistida de um veículo e para controlar um veículo, método de substituição de borboleta para um veículo recreativo, e, veículo. |
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US11110913B2 (en) | 2016-11-18 | 2021-09-07 | Polaris Industries Inc. | Vehicle having adjustable suspension |
US10406884B2 (en) | 2017-06-09 | 2019-09-10 | Polaris Industries Inc. | Adjustable vehicle suspension system |
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US11293355B2 (en) * | 2018-08-23 | 2022-04-05 | Mikuni Corporation | Electronically controlled throttle device for engine |
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- 2004-11-09 WO PCT/JP2004/016609 patent/WO2005054647A1/ja active Application Filing
- 2004-11-09 AT AT04819746T patent/ATE549497T1/de active
- 2004-11-09 JP JP2005515891A patent/JPWO2005054647A1/ja active Pending
- 2004-11-09 JP JP2005515427A patent/JP4212059B2/ja active Active
- 2004-11-09 US US10/578,630 patent/US7594495B2/en active Active
- 2004-11-09 ES ES04818471.7T patent/ES2564166T3/es active Active
- 2004-11-09 EP EP04818471.7A patent/EP1688604B1/en active Active
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- 2004-11-09 WO PCT/JP2004/016608 patent/WO2005047671A1/ja active Application Filing
- 2004-11-12 TW TW093134745A patent/TW200519286A/zh unknown
- 2004-11-12 TW TW093134743A patent/TWI282832B/zh active
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Also Published As
Publication number | Publication date |
---|---|
ATE549497T1 (de) | 2012-03-15 |
JP4212059B2 (ja) | 2009-01-21 |
TW200519286A (en) | 2005-06-16 |
JPWO2005054647A1 (ja) | 2007-06-28 |
EP1688604B1 (en) | 2016-02-24 |
EP1688604A1 (en) | 2006-08-09 |
EP1691059A1 (en) | 2006-08-16 |
US7461630B2 (en) | 2008-12-09 |
US7594495B2 (en) | 2009-09-29 |
TW200521320A (en) | 2005-07-01 |
US20080022970A1 (en) | 2008-01-31 |
WO2005047671A1 (ja) | 2005-05-26 |
EP1691059B1 (en) | 2012-03-14 |
US20070169744A1 (en) | 2007-07-26 |
ES2381005T3 (es) | 2012-05-22 |
ES2564166T3 (es) | 2016-03-18 |
EP1688604A4 (en) | 2009-12-30 |
TWI292013B (ja) | 2008-01-01 |
JP2009057982A (ja) | 2009-03-19 |
EP1691059A4 (en) | 2009-12-30 |
TWI282832B (en) | 2007-06-21 |
JPWO2005047671A1 (ja) | 2007-05-31 |
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