WO2010119530A1 - 自動二輪車 - Google Patents
自動二輪車 Download PDFInfo
- Publication number
- WO2010119530A1 WO2010119530A1 PCT/JP2009/057600 JP2009057600W WO2010119530A1 WO 2010119530 A1 WO2010119530 A1 WO 2010119530A1 JP 2009057600 W JP2009057600 W JP 2009057600W WO 2010119530 A1 WO2010119530 A1 WO 2010119530A1
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- WIPO (PCT)
- Prior art keywords
- reduction ratio
- stand
- center stand
- oil chamber
- support position
- Prior art date
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/66—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings
- F16H61/662—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members
- F16H61/66272—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members characterised by means for controlling the torque transmitting capability of the gearing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62H—CYCLE STANDS; SUPPORTS OR HOLDERS FOR PARKING OR STORING CYCLES; APPLIANCES PREVENTING OR INDICATING UNAUTHORIZED USE OR THEFT OF CYCLES; LOCKS INTEGRAL WITH CYCLES; DEVICES FOR LEARNING TO RIDE CYCLES
- B62H1/00—Supports or stands forming part of or attached to cycles
- B62H1/02—Articulated stands, e.g. in the shape of hinged arms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K2202/00—Motorised scooters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/50—Inputs being a function of the status of the machine, e.g. position of doors or safety belts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/66—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings
- F16H61/662—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members
- F16H61/66254—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members controlling of shifting being influenced by a signal derived from the engine and the main coupling
- F16H61/66259—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members controlling of shifting being influenced by a signal derived from the engine and the main coupling using electrical or electronical sensing or control means
Definitions
- the present invention relates to a motorcycle having a belt type continuously variable transmission.
- Some motorcycles have a center stand that supports the vehicle body with the rear wheels, which are drive wheels, floating above the ground.
- the rear wheel rotates idle.
- the support by the center stand is released and the rear wheel is landed while idling, a sudden torque fluctuation occurs in the torque transmission path to the rear wheel.
- the sudden torque fluctuation as described above can cause a belt slip in a motorcycle equipped with a belt-type continuously variable transmission.
- slipping of the belt is not preferable in terms of durability of the belt and pulley.
- the present invention has been made in view of the above circumstances, and suppresses belt slippage in a continuously variable transmission even when the support by the center stand is released and the rear wheel may land while idling.
- the main purpose is to provide a motorcycle that can be used.
- the motorcycle of the present invention includes an engine and a continuously variable transmission.
- the continuously variable transmission includes a primary pulley and a secondary pulley.
- the primary pulley has a first sheave, a first oil chamber is provided to move the first sheave by hydraulic pressure, and torque output from the engine is transmitted.
- the secondary pulley has a second sheave, a second oil chamber is provided for moving the second sheave by hydraulic pressure, and torque is transmitted from the primary pulley via a belt.
- torque is transmitted from the secondary pulley and a control device that controls the reduction ratio of the continuously variable transmission by changing the hydraulic pressure generated in the first oil chamber and the second oil chamber. Drive wheels and a center stand.
- the center stand rotates between a support position where the vehicle body is supported and a release position where the support is released with the drive wheel floating from the ground.
- the control device includes a stand position acquisition unit that acquires position information of the center stand, and a support position addition unit that increases a predetermined amount of hydraulic pressure generated in each oil chamber when the center stand is at the support position. And having.
- FIG. 1 is a side view of a motorcycle according to an embodiment of the present invention.
- FIG. 2 is a schematic diagram of an engine, a continuously variable transmission, a control device, and a hydraulic circuit included in the motorcycle. It is a functional block diagram of the control part of the transmission control apparatus which the said control apparatus has. It is a flowchart which shows the example of the process which the said control part performs. It is a functional block diagram of the clamp force control part which the said control part has. It is the schematic showing the modification of this invention.
- FIG. 1 is a side view of a motorcycle 1 as an example of an embodiment of the present invention
- FIG. 2 is a schematic diagram of a control device 10, an engine 20, a continuously variable transmission 30, and a hydraulic circuit 50 that the motorcycle 1 has. is there.
- the motorcycle 1 has a front wheel 2 as a driven wheel and a rear wheel 3 as a drive wheel.
- the motorcycle 1 also includes an engine 20, a continuously variable transmission 30 that decelerates the rotation of the engine 20 and transmits it to the rear wheel 3, a control device 10 that controls the engine 20 and the continuously variable transmission 30, and a hydraulic pressure. Circuit 50.
- a center stand 9 is provided at the lower part of the motorcycle 1. The center stand 9 is configured to be rotatable between a support position A where the vehicle body is supported with the rear wheel 3 floating from the ground and a release position B where the support is released.
- the front wheel 2 is rotatably supported by the lower end portion of the front suspension 4.
- a steering shaft 5 is provided at the upper part of the front suspension 4 and is supported so as to be able to rotate left and right.
- a handle 6 is disposed above the steering shaft 5.
- the handle 6, the steering shaft 5, the front suspension 4, and the front wheel 2 are provided so as to rotate integrally left and right, and the front wheel 2 can be steered by operating the handle 6.
- an accelerator grip (not shown) that is operated and rotated by a passenger is provided.
- a seat 7 on which a passenger can sit across is disposed behind the handle 6.
- An engine 20 is disposed below the seat 7.
- the engine 20 has a cylinder 21 and a crankcase 23.
- an intake pipe 24 is connected to the cylinder 21.
- the intake pipe 24 is provided with a fuel supply device 26 that sends fuel in a fuel tank (not shown) to the cylinder 21.
- the fuel supply device 26 is, for example, an electronically controlled fuel injection device controlled by the control device 10.
- the fuel supply device 26 may be a carburetor.
- a throttle body 25 having a throttle valve 25a for adjusting the amount of air flowing through the intake pipe 24 is connected to the intake pipe 24.
- the air that has passed through the throttle body 25 flows into the cylinder 21 from the intake pipe 24.
- the throttle valve 25a is, for example, an electronically controlled valve that is moved by an actuator controlled by the control device 10, or a valve that is connected to an accelerator grip provided on the handle 6 and a wire and moves in conjunction with the accelerator grip.
- a piston 21a that reciprocates by the combustion of fuel ignited by the spark plug 29 is disposed in the cylinder 21, a piston 21a that reciprocates by the combustion of fuel ignited by the spark plug 29 is disposed.
- the piston 21a is connected to the crankshaft 23a.
- the cylinder 21 is connected to an exhaust pipe 27 that exhausts exhaust gas generated by fuel combustion.
- the torque output by the engine 20 is transmitted to the continuously variable transmission 30 between the engine 20 and the continuously variable transmission 30, that is, upstream of the continuously variable transmission 30 in the torque transmission path from the engine 20 to the rear wheel 3.
- a clutch 61 that suppresses torque transmission to the continuously variable transmission 30 is provided.
- the clutch 61 is a centrifugal clutch that is automatically connected or disconnected according to the rotational speed of the engine 20.
- the clutch 61 has a drive member 61a that rotates integrally with the crankshaft 23a, and a driven member 61c that rotates integrally with the primary shaft 36 provided in the continuously variable transmission 30.
- the driving member 61a moves in the radial direction by centrifugal force and contacts the driven member 61c.
- the driven member 61c rotates integrally with the driving member 61a by a frictional force with the driving member 61a, whereby the torque of the engine 20 is transmitted to the primary shaft 36 via the clutch 61.
- the continuously variable transmission 30 is a belt-type continuously variable transmission, a primary pulley 31 that rotates integrally with the primary shaft 36, and a secondary pulley that is provided on the secondary shaft 34 and rotates integrally with the secondary shaft 34. 32.
- the continuously variable transmission 30 includes an annular belt 33 that is wound around a primary pulley 31 and a secondary pulley 32 and transmits the rotation of the primary pulley 31 to the secondary pulley 32.
- the belt 33 is, for example, a metal belt or a resin belt.
- the primary pulley 31 has a movable sheave (first sheave) 31a provided so as to be movable in the axial direction of the primary shaft 36, and a fixed sheave 31b facing the movable sheave 31a in the axial direction.
- the secondary pulley 32 also has a movable sheave (second sheave) 32a provided so as to be movable in the axial direction of the secondary shaft 34, and a fixed sheave 32b facing the movable sheave 32a in the axial direction.
- the reduction ratio of the continuously variable transmission 30 changes.
- the speed reduction ratio of the continuously variable transmission 30 is such that the movable sheave 31a is closest to the fixed sheave 31b and the movable sheave 32a is farthest from the fixed sheave 32b (hereinafter referred to as the top (minimum reduction ratio)) and the movable sheave 31a.
- Changes to the reduction ratio when the movable sheave 32a is closest to the fixed sheave 32b hereinafter referred to as low (maximum reduction ratio)).
- the secondary shaft 34 is connected to the axle of the rear wheel 3 via a gear, and the rotation transmitted from the primary pulley 31 to the secondary pulley 32 is transmitted from the secondary shaft 34 to the axle of the rear wheel 3 via the gear.
- the continuously variable transmission 30 is a continuously variable transmission whose reduction ratio is controlled by hydraulic pressure, and a primary oil chamber (hereinafter referred to as a primary oil chamber) in which hydraulic oil is supplied to the primary pulley 31 from a second oil passage 59b. ) 51 is provided, and the secondary pulley 32 is provided with a second oil chamber (hereinafter, secondary oil chamber) 52 to which hydraulic oil is supplied from the first oil passage 59a.
- the movable sheave 31a moves in the axial direction by the hydraulic pressure of the primary oil chamber 51, and sandwiches the belt 33 with the fixed sheave 31b by the hydraulic pressure.
- the movable sheave 32a is moved in the axial direction by the hydraulic pressure of the secondary oil chamber 52, and the belt 33 is sandwiched between the movable sheave 32a and the fixed sheave 32b by the hydraulic pressure.
- the hydraulic circuit 50 is a circuit that causes the primary oil chambers 51 and 52 to generate hydraulic pressure corresponding to the electrical signal input from the transmission control device 14.
- the hydraulic circuit 50 includes a transmission control valve 55 and a clamping force control valve 56.
- the shift control valve 55 includes a solenoid valve that operates according to the current supplied from the transmission control device 14 and a pressure reducing valve that operates according to the signal pressure output by the solenoid valve.
- the clamp force control valve 56 includes a solenoid valve that operates according to the current supplied from the transmission control device 14 and a relief valve that operates according to the signal pressure output from the solenoid valve.
- the oil pump 58 is provided so as to be interlocked with the rotation of the engine 20, sucks the hydraulic oil accumulated in the oil sump 57, and supplies it to the first oil passage 59a.
- the first oil passage 59a is connected to the secondary oil chamber 52 and is connected to the clamping force control valve 56 via the oil passage 59c.
- the clamp force control valve 56 is connected to an oil passage 59d connected to a lubrication path for lubricating each part of the engine 20 and a lubrication path adjustment valve 71 for adjusting the oil pressure of the lubrication path.
- the clamping force control valve 56 introduces hydraulic oil from the first oil passage 59a.
- the clamping force control valve 56 adjusts the amount of hydraulic oil discharged to the oil passage 59c, whereby the hydraulic pressure (line pressure) of the first oil passage 59a and the hydraulic pressure of the secondary oil chamber 52 are changed. It operates so that it may become the oil pressure according to the electric current input from.
- the transmission control valve 55 is connected to the first oil passage 59a via the oil passage 59e, and is connected to the primary oil chamber 51 via the second oil passage 59b. Further, a discharge path 59f is connected to the transmission control valve 55.
- the transmission control valve 55 reduces the hydraulic pressure of the first oil passage 59a, that is, the line pressure, and causes the primary oil chamber 51 to generate hydraulic pressure corresponding to the current input from the transmission control device 14. That is, the transmission control valve 55 supplies the hydraulic oil introduced from the first oil passage 59a through the oil passage 59e to the second oil passage 59b, or introduces the hydraulic oil in the second oil passage 59b to discharge the passage 59f.
- the hydraulic pressure in the primary oil chamber 51 operates so as to become a hydraulic pressure corresponding to the current input from the transmission control device 14.
- the throttle body 25 is provided with a throttle sensor 25b for detecting the throttle opening.
- the throttle sensor 25b is constituted by a potentiometer, for example, and outputs an electrical signal corresponding to the throttle opening.
- the engine 20 is provided with an engine rotation speed sensor 23b that outputs a signal having a frequency corresponding to the rotation speed of the crankshaft 23a.
- the continuously variable transmission 30 includes a primary rotational speed sensor 36a that outputs a signal having a frequency corresponding to the rotational speed of the primary shaft 36, and a secondary rotational speed sensor 34a that outputs a signal having a frequency corresponding to the rotational speed of the secondary shaft 34. And are provided.
- a front wheel rotational speed sensor 2a that outputs a signal having a frequency corresponding to the rotational speed of the front wheel 2 is provided at the lower end of the front suspension 4 shown in FIG.
- the engine rotational speed sensor 23b, the primary rotational speed sensor 36a, the secondary rotational speed sensor 34a, and the front wheel rotational speed sensor 2a are configured by, for example, a rotational sensor including an electromagnetic pickup or a magnetoresistive element.
- the first oil passage 59a is provided with a hydraulic sensor 81 that includes a diaphragm or a piezo element and outputs an electrical signal corresponding to the oil pressure of the first oil passage 59a.
- the second oil passage 59b is provided with a hydraulic sensor 82 that similarly includes a diaphragm and a piezoelectric element and outputs an electric signal corresponding to the oil pressure of the second oil passage 59b.
- the control device 10 has a transmission control device 14 and valve drive circuits 13 and 15.
- the transmission control device 14 includes a storage unit 49 configured by RAM (Random Access Memory) and ROM (Read Only Memory), and a control unit 40 that includes a microprocessor and executes a program stored in the storage unit 49 in advance. And have.
- RAM Random Access Memory
- ROM Read Only Memory
- control unit 40 that includes a microprocessor and executes a program stored in the storage unit 49 in advance. And have.
- maps and threshold values used in the processing executed by the control unit 40 are stored in advance.
- Output signals from the engine rotation speed sensor 23b, the primary rotation speed sensor 36a, and the secondary rotation speed sensor 34a are input to the control unit 40. Based on the output signals of these sensors, the control unit 40 calculates the engine rotation speed, the rotation speed of the primary shaft 36 (hereinafter referred to as primary rotation speed), and the rotation speed of the secondary shaft 34 (hereinafter referred to as secondary rotation speed). To do.
- An output signal from the front wheel rotation speed sensor 2 a is also input to the control unit 40. Based on this output signal, the control unit 40 calculates the rotational speed of the front wheel 2 (hereinafter, front wheel rotational speed) (function as a front wheel rotational speed acquisition unit 47 described later).
- control unit 40 calculates the rotational speed (rear wheel rotational speed) of the rear wheel 3 by multiplying the secondary rotational speed by a gear ratio between the secondary shaft 34 and the axle of the rear wheel 3 (described later). Function as the rear wheel rotational speed acquisition unit 48). Further, the output signals of the hydraulic sensors 81 and 82 and the throttle sensor 25b are input to the control unit 40. Based on the output signals of these sensors, the control unit 40 detects the hydraulic pressure of the primary oil chamber 51 (hereinafter referred to as primary pressure), the hydraulic pressure of the secondary oil chamber 52 (hereinafter referred to as secondary pressure), and the throttle opening. . Based on these data, the control unit 40 operates the transmission control valve 55 and the clamp force control valve 56 to control the continuously variable transmission 30.
- Each sensor is connected to the control unit 40 via an interface circuit (not shown) including an A / D converter, and the output signal of each sensor is a signal that can be processed by the control unit 40 in the interface circuit. And is input to the control unit 40.
- the valve drive circuit 13 supplies a current corresponding to a signal input from the control unit 40 to a solenoid valve constituting the shift control valve 55 to operate the shift control valve 55. Further, the valve drive circuit 15 supplies a current corresponding to a signal input from the control unit 40 to a solenoid valve that constitutes the clamping force control valve 56 to operate the clamping force control valve 56.
- control device 10 includes an engine control device 12 connected via a bus. Output signals from the throttle sensor 25b, the engine speed sensor 23b, and the like are also input to the engine control device 12 via a signal line (not shown).
- the engine control device 12 controls, for example, the ignition timing by the spark plug 29 and the fuel injection amount by the fuel supply device 26 based on these data.
- FIG. 3 is a block diagram illustrating functions of the control unit 40 included in the transmission control device 14.
- the control unit 40 includes a reduction ratio control unit 41 and a clamping force control unit 42 as its functions.
- the reduction ratio control unit 41 operates the transmission control valve 55 to change the clamping force of the primary pulley 31 (the force with which the movable sheave 31a and the fixed sheave 31b sandwich the belt 33), thereby controlling the reduction ratio. To do.
- the clamping force control unit 42 operates the clamping force control valve 56 to generate hydraulic pressure that does not cause the belt 33 to slip in the first oil passage 59 a and the secondary oil chamber 52.
- the control unit 40 includes an actual reduction ratio calculation unit 43, a secondary clamp force calculation unit 44, a front wheel rotation speed acquisition unit 47, and a rear wheel rotation speed acquisition unit 48 as functions thereof.
- the actual reduction ratio calculation unit 43 calculates the reduction ratio of the continuously variable transmission 30.
- the actual reduction ratio calculation unit 43 includes a secondary rotational speed detected by the secondary rotational speed sensor 34a (hereinafter, secondary rotational speed Sspd) and a primary rotational speed detected by the primary rotational speed sensor 36a (hereinafter, actual primary rotational speed). Based on the speed Pspd), the reduction ratio of the continuously variable transmission 30 is calculated.
- the secondary clamping force calculation unit 44 calculates the clamping force of the secondary pulley 32 (hereinafter, secondary clamping force Fs).
- the secondary clamping force Fs includes a clamping force generated according to the secondary pressure and a clamping force generated by the centrifugal force of the hydraulic oil in the secondary oil chamber 52. Therefore, the secondary clamping force calculation unit 44 calculates the secondary clamping force Fs based on, for example, the hydraulic pressure detected by the hydraulic pressure sensor 81 (hereinafter, actual secondary pressure Ps) and the secondary rotational speed Sspd.
- the stand position acquisition unit 46 determines whether or not the center stand 9 is at the support position A. The determination method will be described in detail later.
- the reduction ratio control unit 41 and the clamping force control unit 42 perform normal processing described below.
- the reduction ratio control unit 41 and the clamping force control unit 42 are supported position addition processing and reduction ratio change suppression described later. Execute the process.
- the clamping force control unit 42 is based on the torque output by the engine 20 (hereinafter referred to as engine torque T) and the reduction ratio (hereinafter referred to as actual reduction ratio Rt) calculated by the actual reduction ratio calculation unit 43 in the normal processing.
- engine torque T the torque output by the engine 20
- actual reduction ratio Rt the reduction ratio calculated by the actual reduction ratio calculation unit 43 in the normal processing.
- the process of the clamping force control part 42 is performed as follows, for example.
- the clamping force control unit 42 is based on the throttle opening (hereinafter, throttle opening Th) detected by the throttle sensor 25b and the engine rotation speed (hereinafter, engine rotation speed Espd) detected by the engine rotation speed sensor 23b.
- the engine torque T is calculated.
- the clamping force control unit 42 calculates a target clamping force of the secondary pulley 32 (hereinafter, target secondary clamping force Fs ⁇ tg) based on the engine torque T and the actual reduction ratio Rt.
- target secondary clamping force Fs ⁇ tg a target clamping force of the secondary pulley 32
- the clamping force control unit 42 refers to a map or a relational expression stored in the storage unit 49 and calculates a target secondary clamping force Fs-tg corresponding to the engine torque T and the actual reduction ratio Rt.
- the clamping force control unit 42 calculates the target secondary pressure Ps-tg based on the target secondary clamping force Fs-tg calculated in this way. Then, the clamping force control unit 42 supplies a current from the valve drive circuit 15 to the solenoid constituting the clamping force control valve 56 so that the actual secondary pressure Ps becomes the target secondary pressure Ps ⁇ tg. After the transmission control device 14 is activated, the clamping force control unit 42 repeatedly executes the above processing at a predetermined cycle. As a result, the secondary pressure and the hydraulic pressure in the first oil passage 59a gradually change according to changes in the throttle opening Th and the actual reduction ratio Rt.
- the reduction ratio control unit 41 sets a target reduction ratio (hereinafter, target reduction ratio Rt ⁇ tg) based on the operation state such as the throttle opening Th and the secondary rotation speed Sspd, The reduction ratio is controlled so that the actual reduction ratio Rt becomes the target reduction ratio Rt-tg.
- target reduction ratio Rt ⁇ tg a target reduction ratio
- the reduction ratio control unit 41 includes a target reduction ratio calculation unit 41a, a target primary pressure calculation unit 41b, and a valve operation processing unit 41c.
- the target reduction ratio calculation unit 41a is configured to generate a target reduction ratio Rt ⁇ based on the throttle opening degree Th, the secondary rotation speed Sspd, and the vehicle speed (hereinafter, vehicle speed V) calculated based on the output signal of the secondary rotation speed sensor 34a. tg is calculated.
- the target reduction ratio calculation unit 41a refers to a map (hereinafter referred to as a shift control map) that correlates the throttle opening, the vehicle speed, and the primary rotational speed (hereinafter referred to as a shift control map) or a relational expression
- a target speed reduction ratio Rt-tg is calculated by calculating the rotational speed Pspd-tg and dividing the target primary rotational speed Pspd-tg by the secondary rotational speed Sspd.
- the target primary pressure calculation unit 41b calculates a target primary pressure (hereinafter, target primary pressure Pp-tg) based on the actual reduction ratio Rt and the target reduction ratio Rt-tg. This process of the target primary pressure calculation unit 41b is executed as follows, for example.
- the target primary pressure calculation unit 41b first calculates a speed at which the speed reduction ratio should be changed (hereinafter referred to as speed change speed Drt) based on the difference between the actual speed reduction ratio Rt and the target speed reduction ratio Rt-tg.
- speed change speed Drt a speed at which the speed reduction ratio should be changed
- the target primary pressure calculation unit 41b is calculated by the actual reduction ratio calculation unit 43 with reference to a map (hereinafter referred to as a transmission speed map) or a relational expression that associates the difference between the actual reduction ratio and the target reduction ratio with the transmission speed.
- the shift speed Drt corresponding to the difference between the actual reduction ratio Rt and the target reduction ratio Rt-tg calculated by the target reduction ratio calculation unit 41a is calculated.
- the target primary pressure calculation unit 41b adds or subtracts a force corresponding to the transmission speed Drt to the clamping force of the primary pulley 31 necessary for maintaining the current reduction ratio, and a value obtained thereby Is a target clamping force of the primary pulley 31 (hereinafter referred to as a target primary clamping force Fp-tg).
- the target primary pressure calculation unit 41b calculates the target primary clamping force Fp-tg by the following equation (1).
- Fp-tg Fpk-Drt / k ⁇ Pspd (1)
- Fpk is a clamping force of the primary pulley 31 necessary for maintaining the current reduction ratio.
- Fpk is, for example, the product (Fs ⁇ Rf) of the ratio of the clamping force of the secondary pulley 32 and the clamping force of the primary pulley 31 (hereinafter referred to as thrust ratio Rf).
- the target primary pressure calculation unit 41b calculates a thrust ratio Rf corresponding to the actual reduction ratio Rt calculated by the actual reduction ratio calculation unit 43 with reference to a map and a relational expression.
- the target primary pressure calculation unit 41b calculates a target primary clamping force Fp-tg based on the thrust ratio Rf and the secondary clamping force Fs that is the clamping force calculated by the secondary clamping force calculation unit 44. Further, k is a coefficient determined according to the reduction ratio and the primary rotation speed, and the target primary pressure calculation unit 41b refers to the map, and is a coefficient corresponding to the actual reduction ratio Rt and the primary rotation speed Pspd. k is calculated. Pspd is the primary rotation speed detected by the primary rotation speed sensor 36a as described above.
- the target primary pressure calculation unit 41b calculates the target primary pressure Pp-tg based on the target primary clamping force Fp-tg calculated in this way.
- the clamping force of the primary pulley 31 includes a centrifugal force generated by the rotation of the hydraulic oil in the primary oil chamber 51. Therefore, the target primary pressure calculation unit 41b can calculate the primary rotation speed Pspd and the pressure receiving area of the primary pulley 31.
- the target primary pressure Pp-tg is calculated based on (the area of the movable sheave 31a that receives the hydraulic pressure).
- the valve operation processing unit 41c is switched from the valve drive circuit 13 to the speed change control valve 55 so that the hydraulic pressure of the primary oil chamber 51 (hereinafter, actual primary pressure Pp) detected by the hydraulic pressure sensor 82 becomes the target primary pressure Pp-tg. Control the current supplied. Specifically, the valve operation processing unit 41 c calculates a command value based on the difference between the target primary pressure Pp ⁇ tg and the actual primary pressure Pp, and outputs the command value to the valve drive circuit 13. The valve drive circuit 13 supplies a current having a value corresponding to the command value to the shift control valve 55. As a result of this processing by the valve operation processing unit 41c, the difference between the target primary pressure Pp-tg and the actual primary pressure Pp is eliminated, and the actual reduction ratio Rt approaches the target reduction ratio Rt-tg.
- the target primary pressure calculation unit 41b repeatedly executes the above-described processing, and sequentially updates the target primary pressure Pp-tg. That is, every time the actual reduction ratio Rt changes toward the target reduction ratio Rt-tg, the target primary pressure calculation unit 41b is based on the difference between the changed actual reduction ratio Rt and the target reduction ratio Rt-tg. A new target primary pressure Pp-tg is calculated.
- the valve operation processing unit 41 c outputs a command value calculated based on the difference between the newly calculated target primary pressure Pp ⁇ tg and the actual primary pressure Pp to the valve drive circuit 13. As a result, the actual reduction ratio Rt further approaches the target reduction ratio Rt ⁇ tg.
- the transmission speed Drt calculated based on the difference between the actual reduction ratio Rt and the target reduction ratio Rt-tg becomes zero.
- the target primary pressure calculation unit 41b calculates the hydraulic pressure corresponding to the clamping force Fpk of the primary pulley 31 necessary for maintaining the reduction ratio as the target primary pressure Pp-tg.
- the actual reduction ratio Rt is maintained at the target reduction ratio Rt-tg.
- FIG. 4 is a flowchart illustrating an example of processing executed by the control unit 40.
- the stand position acquisition unit 46 determines whether ignition control of the engine 20 is being executed (S1). Information on whether or not the ignition control of the engine 20 is being executed is acquired from the engine control device 12. Next, the stand position acquisition unit 46 determines whether or not the center stand 9 is at the support position A (S2). In the present embodiment, whether or not the center stand 9 is at the support position A is determined by whether or not the rear wheel 3 is idling. That is, the idling of the rear wheel 3 occurs when the center stand 9 is at the support position A and the rear wheel 3 is floating from the ground. Therefore, in this embodiment, whether the rear wheel 3 is idling or not. Is used to determine whether or not the center stand 9 is at the support position A.
- Whether or not the rear wheel 3 is idling is determined based on the front wheel rotation speed acquired by the front wheel rotation speed acquisition unit 47 and the rear wheel rotation speed acquired by the rear wheel rotation speed acquisition unit 48. It is determined whether or not both of the first condition of being close to and the second condition that the difference between the rear wheel rotational speed and the front wheel rotational speed is equal to or greater than a predetermined value (positive value) are satisfied. That is, when the rear wheel 3 is idling, the front wheel 2 is normally stopped, so it is determined whether or not the rear wheel 3 is idling according to these two conditions. Specifically, the first condition is determined by whether or not the front wheel rotational speed is smaller than a threshold value slightly larger than zero.
- whether or not the rear wheel 3 is idling may be determined only by the second condition.
- the determination whether the center stand 9 exists in the support position A provides the stand sensor which outputs the detection signal according to the position of the center stand 9, for example, and is based on this detection signal. May be performed.
- FIG. 5 is a functional block diagram of the clamping force control unit 42.
- the support position addition unit 42i calculates the target secondary pressure Ps-tg in the same manner as in the normal processing, and adds a predetermined value (positive value) to the target secondary pressure Ps-tg, thereby obtaining the target secondary pressure. Ps ⁇ tg is corrected (hereinafter, the corrected target secondary pressure Ps ⁇ tg #).
- the clamping force control unit 42 supplies a current from the valve drive circuit 15 to the solenoid of the clamping force control valve 56 so that the actual secondary pressure Ps becomes the corrected target secondary pressure Ps ⁇ tg #.
- the clamping force of the secondary pulley 32 increases compared to the normal processing.
- the predetermined value is added to the target secondary pressure Ps-tg.
- the present invention is not limited to this, and the predetermined value may be added to the target secondary clamping force Fs-tg.
- the target primary pressure calculation unit 41b calculates the target primary clamping force Fp-tg based on the secondary clamping force Fs calculated by the secondary clamping force calculation unit 44.
- the target primary pressure Pp-tg is calculated. For this reason, as the clamping force of the secondary pulley 32 increases, the clamping force of the primary pulley 31 also increases compared to the normal processing. Thus, the clamping force increases in both the primary pulley 31 and the secondary pulley 32, so that the belt 33 is prevented from slipping.
- the support position addition unit 42i includes an inertia torque corresponding value output unit 421i that outputs a predetermined value to be added to the target secondary pressure Ps-tg, and a weight corresponding value output unit 423i.
- Inertia torque corresponding value output unit 421i outputs a predetermined value corresponding to the inertia torque of the torque transmission path (hereinafter, upstream transmission path) from engine 20 to primary pulley 31 of continuously variable transmission 30. That is, when the rear wheel 3 is landed while idling, the torque in the reverse direction acts on the torque transmission path (hereinafter referred to as the downstream transmission path) from the secondary pulley 32 to the rear wheel 3 of the continuously variable transmission 30.
- the inertia torque corresponding value output unit 421i suppresses the slip of the belt 33 by adding a value for compensating the slip of the belt 33 caused by the inertia torque to the target secondary pressure Ps-tg.
- the weight corresponding value output unit 423i outputs a value corresponding to the weight applied to the rear wheel 3. That is, when the rear wheel 3 is landed while idling, a reverse torque having a magnitude corresponding to the weight applied to the rear wheel 3 acts on the downstream transmission path, and this reverse torque causes the slip of the belt 33 to slip. Can be a factor that causes Accordingly, the weight-corresponding value output unit 423i suppresses the slip of the belt 33 by adding a value for compensating the slip of the belt 33 caused by such torque to the target secondary pressure Ps-tg.
- the weight applied to the rear wheel 3 corresponds to the sum of the weight of the vehicle body itself and the weight applied to the vehicle body (load weight) such as the weight of the passenger.
- Such a load weight may be treated as a fixed value, for example, or a load sensor (load cell) that outputs a detection signal corresponding to the weight applied to the vehicle body is provided on the rear cushion (not shown) of the motorcycle 1. You may make it obtain
- the reduction ratio change suppression unit 41i of the reduction ratio control unit 41 starts a reduction ratio change suppression process (S4). That is, when normal control is applied when the rear wheel 3 is idling, the speed ratio of the continuously variable transmission 30 changes from the low (maximum reduction ratio) side to the top (minimum reduction ratio) side. In the embodiment, the speed ratio of the continuously variable transmission 30 is maintained on the low side by the function of the reduction ratio change suppression unit 41i. Specifically, the reduction ratio change suppression unit 41i fixes the target reduction ratio Rt-tg generated in the above-described target reduction ratio calculation unit 41a to a predetermined value on the low side, or tops the predetermined value on the low side. Keep it side to side.
- the gear ratio of the continuously variable transmission 30 is maintained on the low side during the support position addition process.
- a smooth start is possible when the rear wheel 3 is landed while idling.
- the gear ratio of the continuously variable transmission 30 is on the low side, the movable sheave 32a and the fixed sheave 32b of the secondary pulley 32 are relatively close, so the distance that the belt 33 contacts the secondary pulley 32 is relatively large. Become. For this reason, the slip of the belt 33 is more easily suppressed.
- the stand position acquisition unit 46 determines whether or not the support by the center stand 9 has been released (S5). Whether or not the support by the center stand 9 is released depends on a condition that the front wheel rotational speed is greater than near zero (a condition opposite to the first condition) and a difference between the rear wheel rotational speed and the front wheel rotational speed. Judgment is made based on whether or not both of the conditions that are equal to or smaller than the value (a condition opposite to the second condition) are satisfied. That is, when the front wheel 2 rotates with the rear wheel 3, it is determined that the support by the center stand 9 has been released.
- the motorcycle 1 described above is provided with a hydraulic continuously variable transmission 30 that transmits torque by a belt 33. Further, the control device 10 controls the stand position acquisition unit 46 that acquires the position information of the center stand 9 and the hydraulic pressure generated in the primary oil chamber 51 and the secondary oil chamber 52 when the center stand 9 is at the support position A. And a support position addition unit 42i that increases the quantity quantitatively. As a result, even if the support by the center stand 9 is released and the rear wheel 3 is landed while idling, the belt 33 can be prevented from slipping in the continuously variable transmission 30.
- the stand position acquisition unit 46 determines that the center stand 9 is in the support position A when the difference between the rear wheel rotation speed and the front wheel rotation speed satisfies the condition that it is a predetermined value or more. Moreover, you may further combine the conditions that a front-wheel rotational speed is below predetermined. According to this, it is possible to determine whether or not the center stand 9 is at the support position A without providing a detection unit that directly detects the position of the center stand 9. Further, it is possible to grasp the idling of the rear wheel 3 that causes the belt 33 of the continuously variable transmission 30 to slip.
- FIG. 6 is a schematic diagram showing a modification of the present invention.
- a detection signal of the stand sensor 95 is input to the control unit 40.
- the stand position acquisition part 46 contained in the control part 40 determines whether the center stand 9 exists in the support position A based on this detection signal. According to this, the position of the center stand 9 can be directly detected.
- the control unit 40 further includes a reduction ratio change suppression unit 41i that suppresses a change in the reduction ratio of the continuously variable transmission 30 when the center stand 9 is at the support position A.
- the reduction ratio change suppression unit 41i may maintain the reduction ratio of the continuously variable transmission 30 on the low side from a predetermined value. According to this, as described above, since the distance in which the belt 33 contacts the secondary pulley 32 in the continuously variable transmission 30 is relatively large, the slip of the belt 33 is more easily suppressed.
- the support position addition unit 42i of the clamp force control unit 42 responds to the load applied to the vehicle body with the hydraulic pressure generated in the primary oil chamber 51 and the secondary oil chamber 52 when the center stand 9 is in the support position A.
- the amount may be increased. According to this, the clamping force of the primary pulley 31 and the secondary pulley 32 can be easily adjusted to a required magnitude.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
Description
Fp-tg=Fpk-Drt/k・Pspd・・・・・(1)
ここで、Fpkは、現在の減速比を維持するために必要なプライマリプーリ31のクランプ力である。Fpkは、例えば、上述したセカンダリプーリ32のクランプ力とプライマリプーリ31のクランプ力の比(以下、推力比Rf)の積(Fs×Rf)である。目標プライマリ圧算出部41bは、マップや関係式を参照し、実減速比算出部43によって算出された実減速比Rtに対応する推力比Rfを算出する。そして、目標プライマリ圧算出部41bは、当該推力比Rfと、セカンダリクランプ力算出部44によって算出されたクランプ力であるセカンダリクランプ力Fsとに基づいて、目標プライマリクランプ力Fp-tgを算出する。また、kは、減速比とプライマリ回転速度とに応じて決定される係数であり、目標プライマリ圧算出部41bは、マップを参照して、実減速比Rtとプライマリ回転速度Pspdとに対応する係数kを算出する。Pspdは、上述したように、プライマリ回転速度センサ36aによって検知したプライマリ回転速度である。
Claims (7)
- エンジンと、
第1シーブを有し、該第1シーブを油圧により動かす第1油室が設けられ、前記エンジンから出力されたトルクが伝達されるプライマリプーリと、第2シーブを有し、該第2シーブを油圧により動かす第2油室が設けられ、前記プライマリプーリからベルトを介してトルクが伝達されるセカンダリプーリと、を備える無段変速機と、
前記第1油室および前記第2油室に発生する油圧を変化させて、前記無段変速機の減速比を制御する制御装置と、
前記セカンダリプーリからトルクが伝達される駆動輪と、
前記駆動輪が地面から浮いた状態で車体が支持される支持位置と、支持が解除される解除位置との間を回動するセンタースタンドと、を備え、
前記制御装置は、
前記センタースタンドの位置情報を取得するスタンド位置取得部と、
前記センタースタンドが前記支持位置にあるときに、前記各油室に発生させる油圧を所定量増加させる支持位置時加算部と、を有する、
ことを特徴とする自動二輪車。 - 請求項1に記載の自動二輪車において、
従動輪を更に備え、
前記制御装置は、前記駆動輪の回転速度を取得する駆動輪回転速度取得部と、前記従動輪の回転速度を取得する従動輪回転速度取得部と、を更に有し、
前記スタンド位置取得部は、前記駆動輪の回転速度と前記従動輪の回転速度との差が所定以上のときに、前記センタースタンドが前記支持位置にあると判定する、
ことを特徴とする自動二輪車。 - 請求項2に記載の自動二輪車において、
前記スタンド位置取得部は、前記駆動輪の回転速度と前記従動輪の回転速度との差が所定以上、かつ、前記従動輪の回転速度が所定以下のときに、前記センタースタンドが前記支持位置にあると判定する、
ことを特徴とする自動二輪車。 - 請求項1に記載の自動二輪車において、
前記センタースタンドの位置に応じた検知信号を出力するスタンドセンサを更に備え、
前記スタンド位置取得部は、前記スタンドセンサの検知信号に基づいて、前記センタースタンドの位置情報を生成する、
ことを特徴とする自動二輪車。 - 請求項1に記載の自動二輪車において、
前記制御装置は、前記センタースタンドが前記支持位置にあるときに、前記無段変速機の減速比の変化を抑制する減速比変化抑制部を更に有する、
ことを特徴とする自動二輪車。 - 請求項1に記載の自動二輪車において、
前記制御装置は、前記センタースタンドが前記支持位置にあるときに、前記無段変速機の減速比を所定よりもロー側で維持する減速比変化抑制部を更に有する、
ことを特徴とする自動二輪車。 - 請求項1に記載の自動二輪車において、
前記制御装置は、前記車体にかかる荷重の情報を取得する荷重取得部を更に有し、
前記支持位置時加算部は、前記センタースタンドが前記支持位置にあるときに、前記第1油室および前記第2油室に発生させる油圧を、前記荷重に応じた量増加させる、
ことを特徴とする自動二輪車。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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US13/264,186 US8360190B2 (en) | 2009-04-15 | 2009-04-15 | Two-wheeled motor vehicle |
PCT/JP2009/057600 WO2010119530A1 (ja) | 2009-04-15 | 2009-04-15 | 自動二輪車 |
CN200980158773.XA CN102395816B (zh) | 2009-04-15 | 2009-04-15 | 自动二轮车 |
JP2011509129A JP5372141B2 (ja) | 2009-04-15 | 2009-04-15 | 自動二輪車 |
EP09843311.3A EP2420704A4 (en) | 2009-04-15 | 2009-04-15 | TWO-WHEEL MOTOR VEHICLE |
Applications Claiming Priority (1)
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PCT/JP2009/057600 WO2010119530A1 (ja) | 2009-04-15 | 2009-04-15 | 自動二輪車 |
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WO2010119530A1 true WO2010119530A1 (ja) | 2010-10-21 |
Family
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PCT/JP2009/057600 WO2010119530A1 (ja) | 2009-04-15 | 2009-04-15 | 自動二輪車 |
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US (1) | US8360190B2 (ja) |
EP (1) | EP2420704A4 (ja) |
JP (1) | JP5372141B2 (ja) |
CN (1) | CN102395816B (ja) |
WO (1) | WO2010119530A1 (ja) |
Cited By (2)
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JP2013124716A (ja) * | 2011-12-14 | 2013-06-24 | Honda Motor Co Ltd | 無段変速機の滑り検知装置 |
WO2017110210A1 (ja) * | 2015-12-26 | 2017-06-29 | アルプス電気株式会社 | サイドスタンド付き車両 |
Families Citing this family (4)
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DE102012206003A1 (de) * | 2012-04-12 | 2013-10-17 | Robert Bosch Gmbh | Verfahren zur Regelung eines pedalgetriebenen Fahrzeugs und Regelungsvorrichtung |
JP6178583B2 (ja) * | 2013-02-14 | 2017-08-09 | 本田技研工業株式会社 | 直進旋回判定装置 |
JP6927689B2 (ja) * | 2016-10-31 | 2021-09-01 | 株式会社シマノ | 自転車用制御装置およびこれを含む自転車用制御システム |
CN108386534B (zh) * | 2018-04-12 | 2019-06-14 | 吉林大学 | 一种金属带式无级变速器的夹紧力比的测试方法 |
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- 2009-04-15 EP EP09843311.3A patent/EP2420704A4/en not_active Withdrawn
- 2009-04-15 US US13/264,186 patent/US8360190B2/en not_active Expired - Fee Related
- 2009-04-15 CN CN200980158773.XA patent/CN102395816B/zh not_active Expired - Fee Related
- 2009-04-15 JP JP2011509129A patent/JP5372141B2/ja not_active Expired - Fee Related
- 2009-04-15 WO PCT/JP2009/057600 patent/WO2010119530A1/ja active Application Filing
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JP5372141B2 (ja) | 2013-12-18 |
CN102395816B (zh) | 2014-10-15 |
CN102395816A (zh) | 2012-03-28 |
JPWO2010119530A1 (ja) | 2012-10-22 |
US8360190B2 (en) | 2013-01-29 |
EP2420704A1 (en) | 2012-02-22 |
EP2420704A4 (en) | 2016-03-16 |
US20120043151A1 (en) | 2012-02-23 |
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