CN101275669A - Continuously variable transmission and straddle-type vehicle - Google Patents

Continuously variable transmission and straddle-type vehicle Download PDF

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Publication number
CN101275669A
CN101275669A CNA200810088067XA CN200810088067A CN101275669A CN 101275669 A CN101275669 A CN 101275669A CN A200810088067X A CNA200810088067X A CN A200810088067XA CN 200810088067 A CN200810088067 A CN 200810088067A CN 101275669 A CN101275669 A CN 101275669A
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target value
control target
control
pattern
lowers category
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CN101275669B (en
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浅冈亮介
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Yamaha Motor Co Ltd
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Yamaha Motor Co Ltd
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Abstract

When performing kick down, during re-acceleration after decelerating, the engine sometimes races unnecessarily, and a smooth acceleration feeling is not obtained. During control by a kick down mode, when accelerating after a throttle has been fully closed, a control target value is set so as not to pass to a Low side of a limit value 400 of the control target value used during re-acceleration. As a result, racing of the engine is inhibited.

Description

Stepless speed variator and Straddle-type vehicle
Technical field
The present invention relates to stepless speed variator, more specifically relate to the stepless speed variator that is suitable for being installed in the vehicle (as Straddle-type vehicle).
Background technique
In motorcycle (such as the scooter motorcycle), often use the V-type variable v-belt drive.The V-type variable v-belt drive comprises: elementary axle is imported into elementary axle such as the output of the power source of motor; Secondary axle absorbs the output that is delivered to driving wheel to be passed; And paired primary and secondary belt wheel, arrange respectively on described elementary axle and the secondary axle, and have variable groove width.The V-type band twines around two belt wheels, and the groove width controlling mechanism changes the groove width of each belt wheel.Therefore, regulate the winding radius of V-type band, with the gear ratio between the stepless gearing method adjusting belt wheel around each belt wheel.
That is, primary pulley and secondary pulley are formed by fixed flange and secondary wheel rim, form the V-type groove therebetween.Each movable wheel rim is set, makes that it can moving axially along elementary axle or secondary axle.The groove width controlling mechanism moves movable wheel rim, to regulate gear ratio with stepless gearing method.
The V-type variable v-belt drive of known a kind of such type also, wherein motor is used for the movable wheel rim of mobile primary pulley, regulates groove width thus.The motion driving force of known V-type variable v-belt drive use motor moves movable wheel rim along the direction (high-grade side) of the groove width of constriction primary pulley or along the direction (low-grade side) of widening the groove width of primary pulley, allow to regulate groove width (for example, referring to Patent Document 1) thus.Known V-type variable v-belt drive is applicable to Straddle-type vehicle (for example, motorcycle).
[patent documentation 1] Japan Patent No.3043061
[patent documentation 2] Japan Patent No.2950957
[patent documentation 3] JP-A-62-175228
Summary of the invention
The problem that the present invention solves
The scooter motorcycle that is provided with the mechanism that is used for electronic control V-type variable v-belt drive automatically changes the gear ratio of stepless speed variator, and does not need the rider to carry out any operation (for example, patent documentation 3).More specifically, can carry out pre-set programs (mapping graph), with based on information (such as, vehicle body, engine speed, accelerator opening etc.) change the gear ratio of stepless speed variator automatically.Therefore, rider's manually-operable becomes easier, and this causes adopting automatic stepless speed variator in recent years in all kinds vehicle.
The motorcycle that is provided with the automatic stepless speed variator that carries out this electronic control comprises the deceleration bar, and the rider can use the deceleration bar to import its intention.Known various types of deceleration bar, such as the gear ratio of stepless speed variator according to the position of deceleration bar and manually operated deceleration bar (for example, refer to Patent Document 2) and be provided with the switch of kickdown is manually carried out in permission by the forcibly changing gear ratio deceleration bar (for example, referring to Patent Document 3).These well known devices allow to use the advantage of automatic stepless speed variator, and permission simultaneously uses rider's intention to obtain the gear ratio of expecting continuously as the basis.In addition, can use engine braking and the driving of kickdown in advance, reduce blunt acceleration thus.
The present invention has developed the V-type variable v-belt drive that is provided with according to the control program (lowering category) of rider's intention kickdown.In addition, use the V-type variable v-belt drive that lowers category that is provided with under all kinds driving conditions.In addition, find that if lower category during the acceleration again after deceleration, the unnecessary idle running that motor occurs causes the situation that steady sense of acceleration is felt.
The scheme of dealing with problems
Make the present invention according to the problems referred to above.Stepless speed variator of the present invention has the gear ratio by control gear control.Described stepless speed variator comprises the control member that lowers category.The described control gear of low-grade side is provided with the normal mode that control target value is set, and described control target value is set to the pattern that lowers category than the more approaching low-grade side of described normal mode; Where again the limits value of the control target value used of accelerating period; And in response to the operation of the described control member that lowers category, by the described pattern but not described normal mode is provided with described control target value of lowering category, if and behind the complete close the throttle of the control period of the described pattern that lowers category, quicken, described control target ratio then is set, and low-grade side makes the low-grade side of the limiting value of its described control target value that is no more than again the accelerating period use.
Described control gear can also be provided with described control target value is set to the pattern that lowers category that more approaches a plurality of levels of low-grade side than described normal mode step by step.Under this structure, operation in response to the described control member that lowers category, by pattern but not described normal mode is provided with described control target value of lowering category in the pattern that lowers category of described a plurality of levels, if and behind the complete close the throttle of the control period of the described pattern that lowers category, quicken, described control target value then is set, makes the low-grade side of the limiting value of its described control target value that is no more than again the accelerating period use.
For example, described control gear can use the sensor of the operation amount that detects the accelerator operation member to judge whether quicken after cutting out described closure fully.
In addition, described control gear can be controlled, make: if after the described pattern control period that lowers category is closed described closure fully, quicken, if and the limiting value of the described control target value of being used than accelerating period again by the described control target value of the described pattern setting that lowers category more approaches high-grade side, then given control target value is set to described control target value; And if the limiting value of the described control target value used than accelerating period again of the described control target value of the described pattern setting that lowers category more approaches low-grade side, the described limiting value of the described control target value of accelerating period use but not described given control target value is set to described control target value more then.
In addition, for example, described control gear can be controlled feasible: if quicken after the described pattern control period that lowers category is closed described closure fully, the described pattern of lowering category that then approaches most high-grade side in the pattern that lowers category by described a plurality of levels is provided with described control target value.
In addition, for example, described control gear can be controlled feasible: if quicken after the described pattern control period that lowers category is closed described closure fully, then the described pattern of lowering category that more approaches high-grade side than the pattern of using before just having quickened behind the complete close the throttle that lowers category in the pattern that lowers category of described a plurality of levels is provided with described control target value.
In addition, described control gear can be controlled feasible: if quicken after the control period of the described pattern that lowers category is closed described closure fully, described control target value is set makes the engine speed control target value temporarily not reduce after just quickening.
In addition, if the described pattern that lowers category is provided with control target value based on engine speed; Described control gear can be controlled feasible: if quicken behind the complete close the throttle of the control period of the described pattern that lowers category, when quickening, if compare with the engine speed control target value of just quickening to be provided with when preceding and closure is not closed fully hour by the engine speed control target value of the described pattern setting that lowers category, continue to use the engine speed control target value that has been provided with before just having quickened, up to described given engine speed control target value become be higher than just quicken before the described engine speed control target value of setting.
In addition, described control gear can be controlled feasible: if quicken after the control period of the control mode that lowers category is closed described closure fully, described control target value is set to make the gear ratio control target value and does not temporarily change to high-grade side after just quickening.
In addition, described control gear can be controlled feasible: if quicken after the described pattern control period that lowers category is closed described closure fully, and the set described control target value of the described pattern of using when quickening that lowers category is not when opening fully for the high-grade side of the described control target value used before just having quickened and described closure, continue to use the described control target value of having used before just having quickened, up to when quickening, surpass by the described control target value of the described pattern setting that lowers category just quickened before the low-grade side of described control target value of use.
Above-mentioned stepless speed variator can be used as the stepless speed variator in a kind of Straddle-type vehicle, this Straddle-type vehicle comprises having motor, stepless speed variator of exporting according to the operation control of accelerator operation member that is connected to described motor and the control gear of controlling the gear ratio of stepless speed variator.
Effect of the present invention
Described control gear is controlled feasible: in response to the operation of the described control member that lowers category, by described reduction pattern but not described normal mode is provided with described control target value, if and behind the complete close the throttle of the control period of the described pattern that lowers category, quicken, the low-grade side of described control target value with the limiting value that is no more than again the described control target value that the accelerating period uses then is set.Therefore, when closing described closure fully, described control gear is suitably controlled stepless speed variator, suppresses the race of engine thus.
In addition, described control gear is controlled feasible: if quicken after the described pattern control period that lowers category is closed described closure fully, then the described pattern of lowering category that more approaches high-grade side than the pattern of using before just having quickened behind the complete close the throttle that lowers category in the pattern that lowers category of described a plurality of levels is provided with described control target value.Under this structure, can be further when closing described closure post acceleration fully, use the control that lowers category.In addition, make that quicken to be provided with described control target value after the control period of the described pattern that lowers category is closed described closure fully makes the engine speed control target value under the not temporarily-depressed situation, can obtain to quicken more stably if control after just quickening at control gear.
Description of drawings
Fig. 1 illustrates the stepless speed variator according to the embodiment of the invention.
Fig. 2 is the left side view that illustrates according to the Straddle-type vehicle of the embodiment of the invention.
Fig. 3 (a) illustrates the stepless speed variator when it is in low gear ratio (low-grade side) according to the embodiment of the invention; Fig. 3 (b) illustrates its primary pulley; And Fig. 3 (c) illustrates its secondary pulley.
Fig. 4 (a) illustrates the stepless speed variator when it is in transmission ratio (high-grade side) according to the embodiment of the invention; Fig. 4 (b) illustrates its primary pulley; And Fig. 4 (c) illustrates its secondary pulley.
Fig. 5 illustrates according to the embodiment of the invention and is arranged on desired value setting program (mapping graph) in the control gear of stepless speed variator.
Fig. 6 is first flow chart of controlling that illustrates according to the stepless speed variator of the embodiment of the invention.
Fig. 7 is second flow chart of controlling that illustrates according to the stepless speed variator of the embodiment of the invention.
Fig. 8 illustrates according to the embodiment of the invention and is arranged on desired value setting program (mapping graph) in the control gear of stepless speed variator.
Fig. 9 is the 3rd flow chart of controlling that illustrates according to the stepless speed variator of the embodiment of the invention.
Figure 10 is that the embodiment of the invention is arranged on the desired value setting program (mapping graph) in the control gear of stepless speed variator.
Embodiment
Below, the Straddle-type vehicle that is provided with stepless speed variator according to the embodiment of the invention is described with reference to the drawings.Note, the invention is not restricted to the following examples.
Fig. 1 illustrates the structure outline of stepless speed variator 100.Notice that as can be as seen from Figure 1, stepless speed variator 100 comprises elementary axle 101 (bent axles), primary pulley 102, secondary axle 103, secondary pulley 104, V-type band 105, actuator (motor) 106 and control gear 107.As shown in Figure 2, stepless speed variator 100 is installed in the Straddle-type vehicle 1000.In Fig. 1, label 108 expression motors, 111 expression throttler valves, 112 expression reducing gears, 113 expression clutches, and 114 expression driving wheels.
In the present embodiment, the driving force of motor 108 generations is passed to driving wheel 114 (trailing wheel) via stepless speed variator 100 and reducing gear 112.In the present embodiment, clutch 113 is centrifugal clutchs.When the speed of a motor vehicle in moderating process during, disconnect transmission of power from stepless speed variator 100 to secondary axle 103 approximately less than predetermined value.
As shown in Figure 1, stepless speed variator 100 comprises: primary pulley 102, and it is attached to elementary axle 101; Secondary pulley 104, it is attached to secondary axle 103; And V-type band 105, it twines around primary pulley 102 and secondary pulley 104.
Primary pulley 102 comprises fixed flange 121 and movable wheel rim 122.The groove width of primary pulley 102 can be by being regulated by the motor 106 of control gear 107 controls.Secondary pulley 104 comprises fixed flange 123 and movable wheel rim 124.In conjunction with the spring (not shown), spring is used for regulating groove width according to the groove width of primary pulley 102 in secondary pulley 104.
Fig. 3 (a) illustrates the stepless speed variator 100 when being positioned at low gear ratio (low-grade side).As can be from Fig. 3 (b) as can be seen, in primary pulley 102, the gap between fixed pulley 121 and the movable pulley 122 be bigger, and the V-type band is positioned near all sides (elementary axle 101) of primary pulley 102.On the other hand, as finding out from Fig. 3 (c), in secondary pulley 104, the gap between fixed flange 123 and the movable wheel rim 124 is less, and V-type band 105 is positioned at the outer circumferential side of secondary pulley 104.In the case, the rotational speed of elementary axle 101 is lowered, and is passed to secondary axle 103.Therefore, in the case, transmit low speed, big relatively driving force.
Fig. 4 (a) illustrates the stepless speed variator 100 when being positioned at transmission ratio (high-grade side).As can be from Fig. 4 (b) as can be seen, in primary pulley 102, the gap between fixed pulley 121 and the movable pulley 122 be less, and V-type band 105 is positioned at the outer circumferential side of primary pulley 102.On the other hand, as finding out from Fig. 4 (c), in secondary pulley 104, the gap between fixed flange 123 and the movable wheel rim 124 is bigger, and V-type band 105 is positioned near all sides (the secondary axle 103) of secondary pulley 104.In the case, the rotational speed of elementary axle 101 is increased, and is passed to secondary axle 103.Therefore, in the case, transmit at a high speed, relatively little driving force.
Stepless speed variator 100 bases are preset in the desired value setting program drive motor 106 in the control gear 107, and regulate the groove width of primary pulley 102 thus, to regulate gear ratio.When carrying out kickdown, lower category, and use the control of based target value setting program to obtain to lower category according to rider's intention.
The inventor confirms, when use is provided with the V-type variable v-belt drive 100 of such downshift, if lower category when quickening after the deceleration, exists the unnecessary idle running of motor to cause the steadily situation of sense of acceleration feel again.
The problems referred to above do not have adverse effect to the Security of Straddle-type vehicle.But the inventor has designed the speed changer of various modifications, its address the above problem and promote to improve drive the sensation and manually-operable.
Then, description is according to the modification of the stepless speed variator of the embodiment of the invention.
With reference to figure 2, in the present embodiment, Straddle-type vehicle 1000 comprises accelerator operation member 131 and the control member 132 that lowers category.
Accelerator operation member 131 is by the control member of rider's use with the output of control motor 108.In this embodiment, accelerator operation member 131 is formed by accelerator that is attached to handle or acceleration handle.As can be as seen from Figure 1, control gear 107 be controlled the output of motor 108 thus according to the aperture of the operation control throttler valve 111 of accelerator operation member 131.
As described below, the control member 132 that lowers category is operated by the rider, and is the control member of the pattern of lowering category.In the present embodiment, the control member 132 that lowers category was arranged with the accelerator operation member in 131 minutes, and for example can be button,, was positioned at the button that lowers category (KD button) of considering rider's operability and being easy to the position of rider's operation that is.Control gear 107 is carried out the pattern of lowering category according to the rider to the operation of the control member 132 that lowers category.
As shown in Figure 1, stepless speed variator 100 is connected to motor 108, and is provided with control gear 107.
Control gear 107 is based on control target value control stepless speed variator 100.
More specifically, in the present embodiment, control gear 107 is the microcomputers that comprise CPU, ROM, RAM and timer, and is provided with the memory portion of storage data, program etc. and the treated section of handling (calculating) according to program.
In the present embodiment, as shown in Figure 1, control gear 107 is electrically connected to various sensors, and from various types of sensors, obtain the relevant information needed of state with the various variablees of Straddle-type vehicle, various sensors such as accelerator operation sensor 151, engine load sensor 152, engine speed sensor 153, secondary pulley speed probe 154 and vehicle speed sensor 155.
In these sensors, accelerator operation sensor 151 is the sensors that detect the information relevant with the operation of accelerator operation member 131.Engine load sensor 152 is the sensors that detect throttle opening.In this embodiment, engine load sensor 152 is arranged near the back shaft of throttler valve 111, and the angle of swing of detection throttler valve 111 is as throttle opening.Engine speed sensor 153 is sensors of detection of engine speed.In this embodiment, engine speed sensor 153 be arranged on motor 108 bent axle (elementary axle 101) near, with detection of engine speed.Secondary pulley rotation speed sensor 154 is the sensors that detect the rotational speed of secondary pulley 104.In this embodiment, secondary pulley rotation speed sensor 154 is arranged near the secondary axle 103, and detects the rotational speed of secondary pulley 104.In addition, vehicle speed sensor 155 is to detect the sensor of the travelling speed of Straddle-type vehicle 1000.In this embodiment, vehicle speed sensor 155 is arranged on the live axle of driving wheel 114, and detects the rotational speed of the live axle of driving wheel 114.For example, the rotational speed of the live axle of the speed of a motor vehicle of Straddle-type vehicle 1000 (travelling speed) driving wheel 114 that can detect based on vehicle speed sensor 155 detects.
The limiting value 400 of normal mode 200, lower category mode 3 00 and conduct control target value of use when quickening again is stored in the control gear 107.In addition, in this embodiment, the limiting value of using when closure is closed fully 500 also is stored in the control gear 107.Notice that in this embodiment, control gear 107 is provided with desired value part 140 is set, it is provided with the control target value of control stepless speed variator 100.Desired value is provided with the above-mentioned memory portion that part 140 is arranged on control gear 107.Normal mode 200, the mode 3 00 that lowers category, the limiting value of using as the limiting value 400 of the control target value of using when quickening again and when the close the throttle fully are separately positioned on desired value and are provided with in the part 140.
In this embodiment, the control target value of using during the cruising that normal mode 200 is provided with when not lowering category.Control target value when the mode 3 00 of lowering category setting lowers category makes that to compare control target value lower with normal mode 200.The normal mode 200 and the mode 3 00 that lowers category are stored in respectively in the storage area of control gear 107, and are the programs that is provided for the control target value of control gear 107.
Normal mode 200 and lower category mode 3 00 based on judging control target value respectively from the information of vehicles of engine load sensor 152, alternator speed sensor 153, secondary pulley rotation speed sensor 154 and vehicle speed sensor 155 etc.Control gear is controlled the groove width of primary pulley 102 thus based on above-mentioned control target value drive motor 106.
In addition, in this embodiment, normal mode 200 is arranged for the engine speed of the speed of a motor vehicle with control target value, and controls the gear ratio of stepless speed variator 100, makes to obtain given control target value.The mode 3 00 that lowers category multiply by predetermined constant than (ratio lowers category) with the desired value of the engine speed of normal mode setting, control target value is set to normal mode 200 thus and compares lower value.
In response to the operation of the control member 132 that lowers category, control gear 107 uses desired values to be provided with to be provided with in the part 140, and lower category mode 3 00 rather than normal mode 200 is provided with control target value.
The limiting value 400 of the control target value of using in accelerating period again is configured to, the limiting value of the control target value of the stepless speed variator 100 that restriction is provided with when in complete close the throttle post acceleration.Here, more specifically, term " fully close the throttle post acceleration " be meant fully close the throttle (accelerator) to carry out the operation of opening throttle (accelerator) after underspeeding with acceleration.
In this embodiment, when control target value was provided with by the pattern of lowering category, the limiting value 400 of the control target value of using in accelerating period again worked.More specifically, under the normal mode in this embodiment, consider fuel efficiency performance etc., the control target value of stepless speed variator 100 is set, the feasible idle running that does not produce motor.In contrast, the mode 3 00 that lowers category is provided with desired value by speed change characteristic (gear ratio) the multiplication by constants ratio with normal mode 200.Therefore, can produce the problem of the race of engine.
The limiting value 400 of the control target value of using in accelerating period again is configured to be suitable for controlling stepless speed variator and makes the control target value that does not produce the race of engine.Notice that, term " limiting value 400 of the control target value of using in accelerating period again " is meant that being suitable for controlling stepless speed variator makes the repressed control target value of the above-mentioned race of engine here.The amplitude limiter of motor do not represented in term.
For example, pretest based on the Straddle-type vehicle of the same type that stepless speed variator 100 is installed, the limiting value 400 of the control target value of using in accelerating period again can be provided with, and is configured to make the control target value that does not produce the race of engine behind close the throttle fully when quickening again with being suitable for controlling stepless speed variator 100.
In addition, in this embodiment, the limiting value of using 500 is set also when motor cuts out fully.To work as the limiting value of using when closure is closed fully and be arranged to limit the limiting value of the control target value of the stepless speed variator 100 that when complete close the throttle, is provided with.Here, the state of term " close the throttle fully " expression close the throttle.
In this embodiment, when consider suppressing the effect of slip of the primary pulley 102 of stepless speed variator 100 and V-type band 105, the limiting value of using when setting up the contract fully closure in advance 500, this slides because the action of engine braking generation when close the throttle (accelerator) slows down.Can consider the result of simulation on the actual device for example or test and above-mentioned limiting value is set.Note, in the present embodiment, though the above-mentioned limiting value of using when being arranged on complete close the throttle 500 does not need to be provided with the limiting value of using 500 when complete close the throttle.
Fig. 5 illustrates and is arranged on that desired value is provided with the normal mode 200 in the part 140, the mode 3 00 that lowers category, the limiting value 400 of the control target value used when quickening again and the limiting value used when close the throttle fully.Fig. 5 illustrates the speed (desired value) of motor 108 of each desired value setting program with respect to the relation of the speed of a motor vehicle.
More specifically, the vertical pivot of Fig. 5 is represented engine speed, and transverse axis is represented the speed of a motor vehicle.As can be as seen from Figure 5, if the speed of a motor vehicle is identical, along with engine speed uprises, the gear ratio of stepless speed variator be controlled so as to towards low-grade side and changes.In addition, if the speed of a motor vehicle is identical, along with the engine speed step-down, the gear ratio of stepless speed variator is controlled so as to towards low-grade side and changes.
For example, based on the testing signal of engine speed sensor 153, can use the speed that obtains motor 108 of calculating.For example, based on the testing signal of secondary pulley rotation speed sensor 154 or vehicle speed sensor 155, can use to calculate to obtain the speed of a motor vehicle.
P shown in Fig. 5 represents the lower limit of engine speed, and q represents the upper limit of engine speed.In addition, the r shown in Fig. 5 represents the relation between the speed of the speed of a motor vehicle and motor 108 when the groove width of elementary belt wheel 102 is the lowest gear side.In addition, s represents the relation between the speed of the groove width of elementary belt wheel 102 speed of a motor vehicle and motor 108 during for the most high-grade side.
Above-mentioned normal mode 200 in Fig. 5 200a and 200b between operate.200a represents the control target value of the engine speed that complete close the throttle is provided with when not lowering category the cruising of controlling among Fig. 5.The control target value of the engine speed that complete opening throttle was provided with when in addition, 200b represented cruising when the control that do not lower category among Fig. 5.
Note, here, the state of term " when complete close the throttle " expression when close the throttle (accelerator), and the state when opening throttle (accelerator) as far as possible represented in term " when complete opening throttle ".In this embodiment, based on the operation information of the accelerator operation member that obtains from accelerator operation sensor 151, in control gear, judge the state of " when complete close the throttle " and " when complete opening throttle ".Note, if the operative association of throttler valve and accelerator move, then can use engine load sensor 152 decision state of the aperture of detection throttler valve.
In addition, in this embodiment, the above-mentioned mode 3 00 that lowers category is provided with the mode 3 00 that lowers category (being three levels in the example shown in the figure) of a plurality of levels that control target value is set to step by step the more low-grade side of normal mode 200.
First mode 3 01 that lowers category is with the pattern that lowers category that more approaches high-grade side of control target value setting in the mode 3 00 that lowers category of a plurality of levels.In this embodiment, first mode 3 01 that lowers category is arranged on control target value between 301a shown in Fig. 5 and the 301b.When 301a is illustrated in complete close the throttle in first control target value that lowers category the engine speed that is provided with under the control of mode 3 01.When in addition, 301b is illustrated in complete opening throttle in first control target value that lowers category the engine speed that is provided with under the control of mode 3 01.Notice that in the example shown in Fig. 5, first the lower category part of control target value 301a of the engine speed that is provided with under the control of mode 3 01 is identical with the part of the limiting value 400 of the control target value of using when opening throttle fully when quickening again.
Second mode 3 02 that lowers category is that control target value is arranged to more approach the pattern that lowers category of low-grade side than first mode 3 01 that lowers category.In this embodiment, second mode 3 02 that lowers category is arranged on control target value between 302a shown in Fig. 5 and the 302b.When 302a is illustrated in complete close the throttle in second control target value that lowers category the engine speed that is provided with under the control of mode 3 02.When in addition, 302b is illustrated in complete opening throttle in second control target value that lowers category the engine speed that is provided with under the control of mode 3 02.
The 3rd mode 3 03 that lowers category is that control target value is arranged to more approach the pattern that lowers category of low-grade side than second mode 3 02 that lowers category.In this embodiment, the 3rd mode 3 03 that lowers category is arranged on control target value between 303a shown in Fig. 5 and the 303b.When 303a is illustrated in complete close the throttle in the 3rd control target value that lowers category the engine speed that is provided with under the control of mode 3 03.When in addition, 303b is illustrated in complete opening throttle in the 3rd control target value that lowers category the engine speed that is provided with under the control of mode 3 03.
Notice that Fig. 5 makes and is more readily understood the normal mode 200 and the mode 3 00 that lowers category.Notice that as mentioned above, in this embodiment, the desired value of each mode 3 00 that lowers category by the engine speed that will be provided with in the normal mode 200 multiply by predetermined constant to be arranged to control target value more to approach low-grade side than normal mode 200 than (ratio lowers category).
In addition, as mentioned above, 400 among Fig. 5 is illustrated in the limiting value of the control target value of accelerating period use again.In addition, as mentioned above, 500 limiting values of using when being illustrated in complete close the throttle.
Desired value be provided with part 140 according to the operation of the control member 132 that lowers category use desired value to be provided with to be provided with in the part 140 lowering category mode 3 00 and off-order mode 200 is provided with control target value.Then, if at the control period of the mode 3 00 that lowers category close the throttle post acceleration vehicle fully, desired value is provided with part 140 control target value is set, and makes it be no more than the limiting value of the control target value that the accelerating period uses again and arrives low-grade side.
Lower category (301,302,303) of a plurality of levels are set in this embodiment.In addition, according to the pattern that lowers category in the pattern that lowers category of manipulating a plurality of levels (301,302,303) of the control member 132 that lowers category.More specifically, in this embodiment, when the each operation of rider lowers category control member 132, use according to rider's operation and control target value is set to the pattern that lowers category of low-grade side step by step, lower category step by step thus.
When using above-mentioned normal mode 200 or the pattern that lowers category (301,302,303), based on the information of the speed of a motor vehicle and throttle opening, by calculating the control target value that obtains engine speed.
More specifically, based on the position of the transverse axis of speed information process decision chart 5.In addition, by with corresponding to the multiplying each other of the pre-determined factor of the aperture of closure (accelerator), be arranged on the control target value of engine speed when control target value (200a, 301a, 302a, 303a) that complete close the throttle uses and the control target value (200b, 301b, 302b, 303b) used during when complete opening throttle between.In the case, along with throttle opening diminishes, the control target value of using during with the more approaching complete close the throttle of control target value setting (200a, 301a, 302a, 303a).In addition, along with throttle opening becomes big, the control target value of using during with the more approaching complete opening throttle of control target value setting (200b, 301b, 302b, 303b).
The information that control gear 107 uses are relevant with the temporary transient variation of the speed of a motor vehicle and throttle opening repeats to calculate, and the control target value of continuous updating engine speed, controls the gear ratio of stepless speed variator 100 thus.
In this embodiment, in order to suppress the race of engine and to obtain during the close the throttle post acceleration fully steadily to quicken, control gear 107 carries out first control, 701, second control the 702 and the 3rd control 703.
In first control 701, desired value is provided with part 140 control target value is set, and makes the limiting value of the control target value that the accelerating period uses be no more than the low-grade side when the control period of the mode 3 00 that lowers category quickens behind the close the throttle fully more again.
In this embodiment, in first control 701, when the more approaching high-grade side of the limiting value 400 of the control target value of with the mode 3 00 that lowers category control target value being arranged to use than accelerating period again, this control target value is set to control target value.But when the limiting value 400 of the described control target value of by the pattern of lowering category control target value being arranged to use than accelerating period more more approached low-grade side, the limiting value 400 of the control target value that accelerating period is again used was set to control target value.
Then, the control flow of above-mentioned first control 701 will be described with reference to figure 6.
In first control 701, at first, judging part (S11), judge whether the control period accelerator at the mode 3 00 that lowers category is OFF.For example, based on the relevant information of control that lowers category according to the operation of control member 132 of lowering category, can judge whether the mode 3 00 that lowers category is at present controlled.In addition, based on information, can judge whether accelerator is OFF from accelerator operation sensor 151 grades.
If (S11) locates to be judged to be YES at determination step, then program advances to next determination step (S12).But,, then finish first control 701 if locate to judge NO at determination step (S11).
(S12) locates at determination step, judge fully behind the close the throttle vehicle whether quicken.In the example of Fig. 6,, judge whether closed the back vehicle fully at closure quickens based on whether having taken place to switch to accelerator ON from accelerator OFF.Based on information, judge the switching that whether has taken place from accelerator OFF to accelerator ON from accelerator operation sensor 151.
If (S12) locates to be judged to be NO at determination step, the step that describes below (S16), wherein, the control target value of the engine speed that is provided with in the pattern that lowers category when working as complete close the throttle is set to the final control target value of engine speed.If (S12) locates to be judged to be YES at determination step, then program advances to next determination step (S13).
(S13) locates in step, upgrades the control target value that is provided with by the mode 3 00 that lowers category.More specifically, in this embodiment, (S13) locates in step, calculates the control target value of the engine speed of mode 3 00 setting of using when accelerator is switched to ON that lowers category, and its control target value that is set to upgrade.Then, carry out determination step (S14).
(S14) locates at determination step, and whether the control target value of judging the engine speed of locating to upgrade in step (S13) is greater than the limiting value 400 of the control target value of using in accelerating period again.In other words, judge the more approaching low-grade side of limiting value 400 of the control target value whether control target value that the mode 3 00 that lowers category is provided with is used than accelerating period again.
If (S14) locates to be judged as NO at determination step, the control target value of the engine speed of locating to upgrade in step (S13) is not more than the limiting value 400 of the control target value of using in accelerating period again.In the case, the given control target value of locating to upgrade at (S13) is set to control target value (S16).
If (S14) locates to be judged as YES at determination step, the control target value of the engine speed of locating to upgrade in step (S13) is greater than the limiting value 400 of the control target value of using in accelerating period again.In the case, carry out step (S15).Step (S15) is the step that the limiting value 400 of the control target value that will use in the accelerating period is set to control target value.In other words, replace the control target value of the engine speed that the mode 3 00 that lowers category sets, the limiting value 400 of the control target value that accelerating period is again used is set to control target value.Therefore, as the result of step (S15), the limiting value 400 of the control target value of accelerating period use becomes control target value again.
(S16) locates in step, based on the processing of above-mentioned steps (S12), step (S14) and step (S15), the control target value of stepless speed variator 100 is set.
Then, with reference to figure 5 first control 701 is described.
With reference to figure 5, for example, when close the throttle during the cruising (under the control at normal mode) of the control that do not lowering category when slowing down, rider's control member 132 that sometimes can repetitive operation lowers category is to increase the effect of engine braking.
For example, if lower category control three times, shown in the arrow a-c among Fig. 5, the control that lowers category of use will be from first mode 3 01 second mode 3 the 02, the 3rd mode 3 03 that lowers category that lowers category of shifting gears that lowers category.Then, shown in arrow d, when vehicle deceleration, continue to be provided with control target value according to the 3rd mode 3 03 that lowers category.
In this embodiment, as mentioned above, the limiting value of using 500 is set when closure is closed fully.When close the throttle when slowing down, the control target value of the stepless speed variator 100 that mode 3 00 is set if lower category surpasses the low-grade side of the limiting value of using 500 when close the throttle fully, the limiting value of using when then control gear 107 is arranged in complete close the throttle with the control target value of stepless speed variator 100 500.
Therefore, in the present embodiment, lower category under the control of mode 3 03 the 3rd, if the control target value 303a of the engine speed that is provided with when complete close the throttle is reduced to the low-grade side that surpasses the limiting value of using 500 when complete close the throttle, the limiting value of using when complete close the throttle 500 is set to the control target value of stepless speed variator 100.Therefore, shown in arrow e, the limiting value 500 that the control target value of stepless speed variator 100 is used during along complete close the throttle is provided with.
Under the control of the above-mentioned pattern that lowers category, carry out first control 701 fully during the close the throttle post acceleration when.Therefore, shown in arrow e, the limiting value of using along when complete close the throttle the time when control target value 500 be provided with and accelerator when OFF switches to ON, carry out first control 701.
When accelerator when OFF switches to ON and closure and opens, make that the limiting value 500 determined limit of using are invalid when complete close the throttle.Therefore, by the 3rd mode 3 03 that lowers category control target value is set.Therefore, shown in arrow f, the control target value of engine speed increases.
At this moment, if surpass the low-grade side of the limiting value 400 of the control target value of using in accelerating period again by the 3rd lower category control target value that mode 3 03 is provided with, above-mentioned first control 701 limiting value 400 of the control target used of accelerating period again is set to control target value.This judgment processing by determination step shown in Figure 6 (S14) is carried out.Therefore, the control target value that mode 3 03 is provided with if the 3rd lowers category surpasses the low-grade side of the limiting value 400 of the control target value that the accelerating period uses again, then the limiting value 400 of the control target value of accelerating period use is set to control target value again, shown in the arrow g among Fig. 5.Therefore, the control target value of stepless speed variator 100 can not be lower than and be arranged to again the low-grade side of the limiting value 400 of the control target value that the accelerating period uses.Note, be no more than the low-grade side of the limiting value 400 of the control target value that the accelerating period uses when the 3rd lower category control target value that mode 3 03 is provided with again, the 3rd lowers category, and control target value that mode 3 03 is provided with is set to control target value.
As mentioned above, in first control 701, by the determination processing of determination step (S14), when the control target value that is provided with when the mode 3 00 of lowering category surpassed the high-grade side of limiting value 400 of the control target value that the accelerating period uses again, given control target value was set to control target value.But when the control target value that is provided with by the mode 3 00 of lowering category surpassed the low-grade side of limiting value 400 low-grade sides of the control target value that the accelerating period uses again, the limiting value 400 of the control target value that accelerating period is again used was set to control target value.Therefore, control target value can not be lower than and be arranged to again the low-grade side of the limiting value 400 of the control target value that the accelerating period uses.Therefore, when under the pattern of the lowering category control fully during the close the throttle post acceleration, stepless speed variator 100 can be controlled, makes the limiting value 400 of control target value of accelerating period use be no more than low-grade side again, can suppress the race of engine thus.
Note, in Fig. 5, when close the throttle during the cruising (under the control at normal mode) of the control that do not lowering category when slowing down, rider's control member 132 that sometimes can repetitive operation lowers category is to increase the effect of engine braking.Above-mentioned first control 701 is worked in environment in addition.For example, under the pattern control that lowers category, when close the throttle (accelerator) was opened closure (accelerator) with acceleration then to slow down, above-mentioned first control 701 can also be worked.
Foregoing description has disclosed first control 701.In the above-described embodiments, describe such example, wherein the pattern that lowers category that a plurality of levels are set in the part 140 is set in desired value.But above-mentioned first control, 701 control stepless speed variators 100 make low-grade side when the limiting value 400 of the control target value that the accelerating period uses has been no more than under the control of the pattern of lowering category close the throttle post acceleration fully again.Therefore, desired value be provided with a plurality of levels are set in the part 140 the pattern that lowers category not necessarily.
Then, second control 702 will be described.
When in desired value the pattern that lowers category that a plurality of levels are set in the part 140 being set with above-mentioned embodiment is the same, usually, when at the control period of the pattern of lowering category fully during close the throttle post acceleration vehicle, the pattern of using before keeping quickening that lowers category.At this moment, if before acceleration, used the pattern several times that lower category, then there is the situation when restriction uses another to lower category pattern after quickening.
At the control period of the mode 3 00 that lowers category fully during the close the throttle post acceleration, second control 702 is provided with control target value by the mode 3 00 that lowers category, and it is set to the most approaching high-grade side in the mode 3 00 that lowers category of a plurality of levels.In other words, in the present embodiment, when in the complete close the throttle post acceleration of the control period of the mode 3 00 that lowers category, the control target value that is provided with by the mode 3 00 that lowers category approaches high-grade side most in the mode 3 00 that lowers category of a plurality of levels.Therefore, after the acceleration, can lower category again in response to rider's request.
The control flow of second control 702 then, is described based on Fig. 7.
In second control 702, at first,, judge whether the control period accelerator at the mode 3 00 that lowers category is OFF at determination step (S21).If (S21) locates to be judged to be YES at determination step, then program advances to next determination step (S22).But,, then finish second control 702 if locate to judge NO at determination step (S21).
(S22) locates at determination step, judge fully behind the close the throttle vehicle whether quicken.Note, in the example of Fig. 7,, judge whether closed the back vehicle fully at closure quickens based on whether having taken place to switch to accelerator ON from accelerator OFF.
If (S22) locates to be judged to be NO at determination step, then the control target value that is provided with under the control of the given pattern that lowers category is set to final control target value (S25).If (S22) locates to be judged to be YES at determination step, then program advances to next determination step (S23).
(S23) locates in step, and the pattern of lowering category is shifted gears and is set to first of the most approaching high-grade side pattern that lowers category in the pattern that lowers category (301,302,303) of a plurality of levels.More specifically, in this embodiment, (S23) locates in step, and when accelerator switched to ON, the pattern of lowering category of use was shifted gears and is set to first of the most approaching high-grade side pattern that lowers category in the pattern that lowers category (301,302,303) of a plurality of levels.Then, program advances to step (S24).
(S24) locates in step, uses the first mode computation control target value of locating to shift gears in step (S23) that lowers category.
(S25) locates in step, based on the processing of locating in above-mentioned determination step (S22) and step (S24) control target value is set.More specifically, vehicle acceleration when located to judge fully close the throttle in step (S22) after is then located in step (S23), the pattern of lowering category first mode 3 01 that lowers category of shifting gears.Then, (S24) locates in step, by the first mode 3 01 compute control desired value that lowers category, and locates in step (S25), and the final control target value of stepless speed variator 100 is set.
Then, with reference to figure 8 second control 702 is described.
In Fig. 8, for example, when closing accelerator in (under the control of normal mode of the control that do not lowering category) during the cruising when slowing down, rider's control member 132 that sometimes can repetitive operation lowers category is to increase the effect of engine braking.
For example, if lower category control three times, shown in the arrow a-c among Fig. 8, the pattern of lowering category of use will be from first mode 3 01 second mode 3 the 02, the 3rd mode 3 03 that lowers category that lowers category of shifting gears that lowers category.Then, shown in arrow d, when vehicle deceleration, continue to be provided with control target value according to the 3rd mode 3 03 that lowers category.
In this embodiment, as mentioned above, the limiting value of using 500 is set when motor cuts out fully.Therefore, if the 3rd lower category control target value 303 that mode 3 03 is provided with surpasses the low-grade side of the limiting value of using 500 when complete close the throttle, the limiting value of using during complete close the throttle 500 is set to control target value (arrow e).
Under the control of the pattern of lowering category, carry out second control 702 fully during the close the throttle post acceleration when.Therefore, when control target value is provided with along the limiting value of using when as the complete close the throttle of arrow e 500, when accelerator when OFF switches to ON, carry out second control 702.
When accelerator switches to ON from OFF, closure is opened, and makes that the limiting value 500 determined limit of using when complete close the throttle are invalid.Then, as shown in Figure 7,, carry out step (S23), thus downshift pattern first mode 3 01 that lowers category of shifting gears as the result of determination of second control, 702 determination step (S22).Then, by first mode 3 01 (S24, S25) that lowers category control target value is set.
The first mode 3 01 set control target value that lowers category is judged by the operating range of accelerator operation member 131.Therefore, for example, can shown in the arrow h among Fig. 8, set control target value.
At this moment, not enough if the rider feels moment of torsion, it can operate accelerator operation member 131 to increase engine speed.In addition, the rider can operate the control member 132 that lowers category to ask the another kind pattern that lowers category.According to second control, when quickening, the pattern that lowers category is from the 3rd mode 3 03 first mode 3 01 that lowers category of shifting gears that lowers category.Therefore, under the rider asked situation that another kind lowers category, the pattern that lowers category was successively from first mode 3 01 second mode 3 the 02, the 3rd mode 3 03 that lowers category that lowers category of shifting gears that lowers category.
In the case, in second control 702, when in the complete close the throttle post acceleration of the control period of the mode 3 00 that lowers category, in the pattern that lowers category (301,302,303) of a plurality of levels, approach high-grade side most by the control target value of the pattern setting that lowers category.Therefore, after the acceleration, can ask and kickdown in response to lowering category of rider.
In addition, shown in arrow h among Fig. 8, and compare by the 3rd control target value that lowers category the engine speed that mode 3 03 is provided with, lower by first the lower category control target value of the engine speed that mode 3 01 is provided with.Therefore, can expect that second control 702 is effective aspect the inhibition race of engine.
In addition, at the control period of mode 3 00 that lowers category, when fully during the close the throttle post acceleration, second control 702 is worked.For example, shown in the dot and dash line as shown in Figure 8, the 3rd lower category mode 3 03 control period close the throttle (accelerator) open when quickening when closure (accelerator) with after slowing down, second control 702 can be worked.In the case,, taken place to quicken and in case shift gears and first lower category behind the mode 3 01 as the result who uses second control 702, can be in response to from rider's the request of lowering category and lower category.In addition,, and carry out the 3rd and compare when lowering category the control of mode 3 03 as the result who uses second control 702, engine speed that control target value is set is lower.Therefore, can expect that second control 702 is effective aspect the inhibition race of engine.
Above-mentioned specification has been finished the description of second control 702.Second control 702 can be made amendment in all fields.
For example, in above-mentioned specification, provide such example, wherein the step in control flow as shown in Figure 7 (S23) is located, control and make and still, to substitute this mode by the pattern of lowering category first mode 3 01 that lowers category of shifting gears, at step (S23), the pattern of lowering category can be shifted gears and be set to more approach than the pattern of just using that lowers category the pattern that lowers category of high-grade side in the pattern that lowers category (301,302,303) of a plurality of levels before close the throttle post acceleration fully.
According to this control,, can ask another to lower category and kickdown in response to the rider fully after the acceleration behind the close the throttle.In addition, comparing, can suppress the unwanted race of engine with continue using just the pattern of lowering category using before the close the throttle post acceleration fully.
Note, for example, at the control period of the mode 3 00 that lowers category fully under the situation of close the throttle post acceleration, can be so that lower category control fails and use normal mode 200.But, in this control, make the inefficacy that lowers category because running counter to rider's wish, when quickening, the moment of torsion of rider's wish can not be obtained to satisfy, and steady acceleration can not be obtained thus.Above-mentioned second control 702 allows to obtain to meet the steady acceleration of rider's wish, and allows to suppress the unwanted race of engine.
In addition, can use second control to control stepless speed variator 100 with first the combining of control 701, wherein first control 701 is provided with the above-mentioned limiting value 400 of the control target value that above-mentioned accelerating period again uses, and makes be no more than the limiting value 400 of the control target value of accelerating period use fully during the close the throttle post acceleration again.Attention is not to use combining of second control and first control 701, and described first control 701 is provided with the above-mentioned limiting value 400 of the control target value of accelerating period use again.The limiting value of using when in addition, not needing to be provided with 500 as the complete close the throttle described among the above-mentioned embodiment.
Then, the 3rd control 703 will be described.
For example, when above-mentioned second control 702 was worked, the pattern of lowering category was shifted gears and is set to the pattern that lowers category of more approaching high-grade side.Thus, for example, if control switches to first mode 3 01 that lowers category shown in arrow h1 Fig. 8 from the 3rd control that lowers category mode 3 03, then the control target value of engine speed becomes lower.Therefore, fully under the situation of close the throttle post acceleration, when quickening, the too for a short time wish that is difficult to satisfy the rider of output torque, so vehicle can not be willing to steadily quicken as the rider.In the 3rd control 703, solved when using second control 702 generation above-mentioned difficulties, and control and make vehicle steadily quicken during the close the throttle post acceleration fully.
Preferably, the 3rd control 703 is provided with control target value, for example makes the control target value of engine speed temporarily not descend after just quickening.In addition, for example, preferably, the 3rd control 703 is provided with the control target value of motor gear ratio, makes it temporarily not change to high-grade side after just quickening.
In the case, for example, can use the timer function of control gear 107, with preset time period.Then, and then close the throttle post acceleration fully can be counted cycle time cycle.
Therefore, even quicken back use second control 702 just, the control target value 100 of stepless speed variator 100 excessively is not set to low-grade side after just quickening.Therefore, when quickening, can export the output torque that more mates rider's wish, and obtain steadily to quicken.
Below, describe the above-mentioned the 3rd and control an embodiment of 703.
In this embodiment, when quickening, if by the control target value of the engine speed of the pattern setting that lowers category with just quicken before the control target value of the engine speed that uses compare low and closure is not opened fully, then when quickening, the control target value of the engine speed that uses before keeping just having quickened, up to the control target value of the engine speed of the pattern setting that lowers category surpass just quickened before the control target value of engine speed of use.
In this embodiment, the 3rd control 703 for example can be arranged on step (S24) and the step (S25) in the flow chart shown in Figure 7 in second control.Fig. 9 illustrates such example, and wherein the 3rd of this example the control 703 is set at step (S24) and the step (S25) of Fig. 7.
In this embodiment, at step (S24), carry out determination step (S31).At determination step (S31), whether the control target value of judging the engine speed that has been provided with before just having quickened is higher than the control target value of the set engine speed of the pattern that lowers category of just having quickened the back gearshift.Note, in Fig. 9, for making things convenient for reason, the control target value of the engine speed that has been provided with before just having quickened is expressed as " target engine speed that has used before just having quickened ", and the control target value of just having quickened the set engine speed of the pattern that lowers category of back gearshift is expressed as " target engine speed after just having quickened ".
If the control target value of the engine speed that has been provided with before just having quickened is higher than the control target value of just quickening the set engine speed of the back pattern that lowers category of shifting gears, then determination step (S31) locates to be judged to be YES.If (S31) locates to be judged to be YES at determination step, then carry out following step (S32).
(S32) locates at determination step, judges whether closure (accelerator) is opened fully.If the control target value of the engine speed that has been provided with before just having quickened is higher than the control target value of the set engine speed of the pattern that lowers category of just quickening the back gearshift and closure (accelerator) when not opening fully, determination step (S32) locates to be judged to be YES.If (S32) locates to be judged to be YES at determination step, then carry out following step (S33).
(S33) locates in step, and the control target value of the engine speed that has been provided with before just having quickened is set to control target value.
In other words, the control target value of the engine speed that is provided with before just quickening is higher than the control target value of the set engine speed of the pattern that lowers category of just quickening the back gearshift and closure (accelerator) when not opening fully, and the control target value of set engine speed is set to control target value before just having quickened.
On the other hand, if locate to be judged to be NO, then under these two kinds of situations, carry out step (S34) at determination step (S31) or determination step (S32).
In other words, the control target value of the engine speed that is provided with before just quickening is not higher than the control target value of just having quickened the set engine speed of the pattern that lowers category of shifting gears the back, carries out step (S34).In addition, the control target value of the engine speed that is provided with before just quickening is higher than the control target value of the set engine speed of the pattern that lowers category of just quickening the back gearshift and accelerator when opening fully, carries out step (S34) in a similar manner.
(S34) locates at determination step, and the control target value of the engine speed that the pattern that lowers category of having shifted gears after use has just been quickened is set is set to control target value.
(S25) locates in step, though not shown, be based on the processing of locating in above-mentioned determination step (S22), step (S33) and step (S34) control target value is set.
Then, use Fig. 8 to explain when the situation of using second control the 702 and the 3rd control 703 as the basis.For example, when fully during the close the throttle post acceleration, there is the situation that the control target value of the engine speed shown in arrow h1 is set when second control 702.In the case, the control target value of the engine speed that is provided with before just quickening is higher than the control target value of just quickening the set engine speed of the pattern that lowers category of shifting gears the back.Therefore, the 3rd control 703 is worked.When the 3rd control 703 is worked, the control target value that keeps engine speed is higher than the control target value (shown in arrow i) of engine speed set before just quickening up to the control target value of the set engine speed of the pattern that lowers category of just quickening the back gearshift.
Under this mode, if use the 3rd control 703, the control target value of stepless speed variator 100 is set to excessively not surpass the low-grade side after just having quickened when using second to control 702.Therefore, when quickening, can export the moment of torsion that more meets rider's wish, allow thus to obtain steadily to quicken.
Note, the position of the control target value 303a of set motor is higher than under the situation of control target value 301a of engine speed set when first lowers category in the mode 3 01 when complete opening throttle when the 3rd lowers category in the mode 3 03 when complete close the throttle, and situation is different slightly.
For example, let us consider expression when complete close the throttle by the 3rd represented state of j that lowers category on the solid line 303a of the set control target value of mode 3 03.
In the case, in Fig. 8,, when complete close the throttle, be higher than when the complete opening throttle control target value 301a that lowers category the engine speed that mode 3 01 is provided with by first by the 3rd mode 3 03 set control target value 303a that lowers category by the engine speed place in the represented state of j.
Then, let us is considered in the represented state of in Fig. 8 j to lower category under the control of mode 3 03 when closing accelerator to slow down and situation when opening throttle is with acceleration fully then the 3rd.
Closed accelerator under the control of mode 3 03 and quickened if in Fig. 8, lower category the 3rd in the represented state of j, then second controlled 702 and control, with first mode 3 01 that lowers category of shifting gears with the back of slowing down.In addition, in this embodiment, use the 3rd control 703.In the represented state of j, opened accelerator fully to quicken, the control target value of the engine speed that has been provided with before therefore just having quickened is higher than the control target value of the set engine speed of the pattern that lowers category of just quickening the back gearshift, and accelerator is opened fully.Therefore, carry out step (S34), and the control target value of engine speed is provided with by first pattern of lowering category of just quickening the back gearshift.Therefore, steadily continue first control that lowers category mode 3 01.
In the 3rd control 703, even control target value is provided with by the mode 3 00 that lowers category that second control 702 is set to the high-grade side after just quickening, the control target value of engine speed does not descend.Therefore, can obtain steady acceleration after just having quickened.
The foregoing description has been explained the example of the 3rd control 703, control target value wherein is set makes, when control target value was set to the mode 3 00 that lowers category that just quickens the high-grade side in back and is provided with by second control 702, the control target value of engine speed did not descend.But above-mentioned the 3rd control 703 can be provided with control target value, makes the control target value of gear ratio not change to high-grade side.
As so concrete example, when the control target value ratio of the gear ratio that the pattern of using when by acceleration that lowers category is set has just quickened the more approaching high-grade side of control target value of the preceding gear ratio of using and has not had complete opening throttle, when quickening, the control target value of the gear ratio of using before can keeping just having quickened, up to the control target value of the set gear ratio of the pattern of lowering category surpass just quickened before the low-grade side of control target value of gear ratio of use.
In the case, in the control flow shown in Fig. 9, (S31) locates at determination step, and whether the control target value of judging the gear ratio of the stepless speed variator 100 that has been provided with before just having quickened surpasses the low-grade side of control target value of the gear ratio of the set stepless speed variator 100 of the pattern that lowers category of just having quickened the back gearshift.
Based on this result,, then locate to be judged to be YES at determination step (S31) if judge the control target value of the gear ratio that the control target value of the gear ratio of just having quickened preceding setting is set above the pattern that lowers category of just having quickened the back gearshift.
At determination step (S32), judge and whether open accelerator fully.The control target value of the gear ratio that is provided with before just quickening surpasses the control target value of just having quickened the set gear ratio of the back pattern that lowers category of shifting gears and does not open fully under the situation of accelerator, and (S32) locates to be judged to be YES at determination step.
(S33) locates in step, and the control target value that has been provided with before just having quickened is set to control target value.
The result, when the control target value of the gear ratio that is provided with before just quickening surpassed the control target value of the set gear ratio of the pattern that lowers category of just having quickened the back gearshift and do not open accelerator fully, the control target value that has been provided with before just having quickened was set to control target value.
On the other hand, (S34) locates at determination step, and the set control target value of the pattern that lowers category of just having quickened the back gearshift is set to control target value.
The result, when the control target value of the gear ratio that is provided with before just quickening did not have the control target value of the gear ratio not set above the pattern that lowers category of just having quickened the back gearshift, the set control target value of just having quickened to shift gears the back of the pattern that lowers category was set to control target value.
In addition, when the control target value of the gear ratio that is provided with before just quickening surpasses the control target value of just having quickened the set gear ratio of the back pattern that lowers category of shifting gears and opens accelerator fully, with parallel pattern, control target value is set by the pattern that lowers category of just quickening the back gearshift.
Under this mode, can use second control the 702 and the 3rd control 703, control as a reference with the control target value of using gear ratio.
Hereinbefore, explained stepless speed variator and Straddle-type vehicle according to an embodiment of the invention.But stepless speed variator of the present invention and Straddle-type vehicle are not limited to the foregoing description.
For example, above-mentioned example comprises the pattern that lowers category of the pattern that lowers category (more specifically, the pattern that lowers category of 3 levels) that is provided with a plurality of levels.But, under the situation of the pattern that lowers category that a plurality of levels are set, must not be three.In addition, above-mentioned first control 701 can be applied in the situation of the pattern that lowers category that a plurality of levels are not set.
In addition, in the above-described embodiments, based on the product setting of the speed change characteristic of normal mode and the constant ratio pattern that lowers category.But, can use the different technologies setting pattern that lowers category.
In addition, in above-mentioned example, the control target value of stepless speed variator is the gear ratio of engine speed and stepless speed variator.But the control target value of stepless speed variator is not limited thereto.
In addition, the sensor of closing the preceding and complete opening throttle of joint fully can be detected and accelerator operation sensor 151, engine load sensor 152 etc. can be used for.Therefore, accelerator operation sensor 151, engine load sensor 152 etc. be can judge closure aperture sensor not necessarily.
In addition, some Straddle-type vehicles comprise two desired value setting programs of normal mode, that is, and and the drive pattern and the auxiliary mode that separate with the pattern of lowering category.Drive pattern is the pattern that focuses on fuel consumption etc., and auxiliary mode is the pattern of " motor pattern " of doing, and it is compared with drive pattern gear ratio is set to low-grade side.Under this structure, exist each drive pattern and the further situation that the pattern that lowers category is set of auxiliary mode.Even under such structure, the above-mentioned limiting value of using in the time of can setting up the contract fully closure 500 is with the primary pulley 102 of inhibition stepless speed variator and the slip of V-type band 105.
In addition, in above-mentioned example, the example of scooter motorcycle as Straddle-type vehicle is described.But Straddle-type vehicle is not limited thereto.In addition, the vehicle that stepless speed variator wherein can be installed according to the present invention is not limited to Straddle-type vehicle.For example can be installed in SSV (vehicle side by side) with two people's vehicle seats etc. according to stepless speed variator of the present invention.
In addition, the result of the stepless speed variator structure that is not limited to describe in the foregoing description.The present invention can be applied to various stepless speed variators, and it comprises the V-type band around primary pulley and secondary pulley winding, and wherein the groove width of primary pulley is regulated by actuator and control gear.
As above-mentioned stepless speed variator, for example can use the stepless speed variator of comprising shown in Fig. 8 as the metal tape of V-type band.Note, in Fig. 8, represent with identical label with the structural member and the part that have same operation in the stepless speed variator of the embodiment described in Fig. 1.
In this embodiment,, comprise that the stepless speed variator 800 as the metal tape of V-type band can carry out various modifications except comprising the V-type band 801 as the V-type band shown in Fig. 8,
Metal tape CVT800 comprises clutch 802, elementary turn-sensitive device 803, oil hydraulic cylinder 804,805 and hydraulic control valve 806.
Clutch 802 is arranged between the input shaft of the output shaft of motor 108 and metal tape CVT800, and the transmission of power between the input shaft of the output shaft of connection/disconnection motor 108 and metal tape CVT800.
The rotating speed of elementary turn-sensitive device 803 detection of primary belt wheels 103.In this embodiment, use the ratio of the speed of a motor vehicle of the rotating speed of the primary pulley 103 that elementary turn-sensitive device 803 detected and the Straddle-type vehicle 1000 that vehicle speed sensor 154 is detected, control gear 107 calculates the gear ratio of stepless speed variators 200.Note, can use the ratio of the rotating speed of the rotating speed of the primary pulley 103 that elementary turn-sensitive device 803 detected and the secondary pulley 104 that secondary pulley speed probe 153 is detected to calculate the gear ratio of stepless speed variator 800.
Then, oil hydraulic cylinder 804 is regulated the groove width of primary pulley 103.In this embodiment, oil hydraulic cylinder 804 is applied to the movable wheel rim 122 that forms primary pulley 103 parts with pressure, regulates the groove width of primary pulley 103 thus.In addition, oil hydraulic cylinder 805 is regulated the groove width of secondary pulley 104.In this embodiment, oil hydraulic cylinder 805 is applied to the movable wheel rim 124 that forms secondary pulley 104 parts with pressure, regulates the groove width of secondary pulley 104 thus.Hydraulic control valve 806 is valves of regulating the hydraulic pressure that is applied to oil hydraulic cylinder 804,805.Hydraulic control valve 806 is controlled, and makes that the hydraulic pressure of another oil hydraulic cylinder 805 (804) reduces when the hydraulic pressure of the oil hydraulic cylinder 804 (805) in the oil hydraulic cylinder 804,805 increases.Hydraulic control valve 806 is by control gear 107 controls.
According to the control target Value Operations hydraulic control valve 806 that is provided with, control metal tape CVT800 makes the gear ratio of metal tape CVT800 change by control gear 107.Control gear 107 carries out the control of metal tape CVT800 in the mode of the control that is similar to stepless speed variator 100.Note, in metal tape CVT800, control afterwards the control target value of the rotating speed of 107 use primary pulley 103 again according to present embodiment, rather than the control target value of engine speed.
[industrial applicability]
As mentioned above, can be used for various application according to variable v-belt drive of the present invention, such as striding The variable v-belt drive of ride type vehicle.

Claims (24)

1. a stepless speed variator has the gear ratio by control gear control, and it comprises:
The control member that lowers category, wherein
Described control gear is provided with the normal mode that control target value is set, and described control target value is set to the limits value of the described control target value of using than the pattern that lowers category of the more approaching low-grade side of described normal mode with in accelerating period again; And
Operation in response to the described control member that lowers category, by the described pattern but not described normal mode is provided with described control target value of lowering category, if and behind the complete close the throttle of the control period of the described pattern that lowers category, quicken, described control target value then is set, makes the low-grade side of the limiting value of its described control target value that can not surpass again the accelerating period use.
2. stepless speed variator according to claim 1, wherein:
Described control gear is provided with described control target value is set to the pattern that lowers category that more approaches a plurality of levels of low-grade side than described normal mode step by step;
Operation in response to the described control member that lowers category, by pattern but not described normal mode is provided with described control target value of lowering category in the pattern that lowers category of described a plurality of levels, if and behind the complete close the throttle of the control period of the given pattern that lowers category, quicken, described control target value then is set, and low-grade side makes the low-grade side of the limiting value of its described control target value that can not surpass again the accelerating period use.
3. stepless speed variator according to claim 1 and 2, wherein said control gear use the sensor of the operation amount that detects the accelerator operation member to judge whether quicken after closing described closure fully.
4. stepless speed variator according to claim 1 and 2, wherein:
Described control gear is controlled, and makes:
If after the described pattern control period that lowers category is closed described closure fully, quicken, and
If the limiting value of the described control target value of being used than accelerating period again by the described control target value of the described pattern setting that lowers category more approaches high-grade side, then given control target value is set to described control target value; And
If the described control target value of the described pattern setting that lowers category more approaches low-grade side than the limiting value of the described control target value that accelerating period again uses, the described limiting value of the described control target value of accelerating period use but not described given control target value is set to described control target value more then.
5. stepless speed variator according to claim 2, wherein said control gear is controlled feasible: if quicken after the described pattern control period that lowers category is closed described closure fully, the described pattern of lowering category that then approaches most high-grade side in the pattern that lowers category by described a plurality of levels is provided with described control target value.
6. stepless speed variator according to claim 2, wherein said control gear is controlled feasible: if quicken after the described pattern control period that lowers category is closed described closure fully, then the described pattern of lowering category that more approaches high-grade side than the pattern of using before just having quickened behind the complete close the throttle that lowers category in the pattern that lowers category of described a plurality of levels is provided with described control target value.
7. a stepless speed variator has the gear ratio by control gear control, and it comprises:
The control member that lowers category, wherein
Described control gear is equipped with normal mode that control target value is set and the pattern that lowers category of described control target value being arranged to more approach than described normal mode low-grade side; And
In response to the operation of the described control member that lowers category, by the described pattern but not described normal mode is provided with described control target value of lowering category; And
If quicken behind the described complete close the throttle of pattern control period that lowers category, the pattern of lowering category that then approaches most high-grade side in the pattern that lowers category by described a plurality of levels is provided with described control target value.
8. a stepless speed variator has the gear ratio by control gear control, and it comprises:
The control member that lowers category, wherein
Described control gear is provided with normal mode that control target value is set and the pattern that lowers category of described control target value being arranged to more approach than described normal mode low-grade side; And
In response to the operation of the described control member that lowers category, by the described pattern but not described normal mode is provided with described control target value of lowering category; And
If behind the described complete close the throttle of pattern control period that lowers category, quicken, then described control target value is set by the described pattern of lowering category that more approaches high-grade side than the pattern of using before just having quickened behind the complete close the throttle that lowers category in the pattern that lowers category of described a plurality of levels.
9. according to each described stepless speed variator among the claim 5-8, wherein said control gear is controlled feasible: if quicken after the control period of the control mode that lowers category is closed described closure fully, described control target value is set to make the engine speed control target value and does not temporarily reduce after just quickening.
10. according to each described stepless speed variator among the claim 5-8, wherein:
The described pattern that lowers category is provided with control target value based on engine speed; And
Described control gear is controlled feasible: if quicken behind the complete close the throttle of the control period of the described pattern that lowers category, when quickening, if compare with the engine speed control target value of just quickening to be provided with when preceding and closure is not opened fully hour by the engine speed control target value of the described pattern setting that lowers category, continue to use the engine speed control target value that has been provided with before just having quickened, up to described given engine speed control target value become be higher than just quicken before the described engine speed control target value of setting.
11. according to each described stepless speed variator among the claim 5-8, wherein said control gear is controlled feasible: if quicken after the control period of the control mode that lowers category is closed described closure fully, described control target value is set to make the gear ratio control target value and does not temporarily change to high-grade side after just quickening.
12. according to each described stepless speed variator among the claim 5-8, wherein:
Described control gear is controlled feasible:
If after the described pattern control period that lowers category is closed described closure fully, quicken, and
When the set described control target value of the described pattern of using when quickening that lowers category is not opened fully for the high-grade side of the described control target value used before just having quickened and described closure,
Continue to use the described control target value of having used before just having quickened, up to when quickening, surpass by the described control target value of the described pattern setting that lowers category just quickened before the low-grade side of described control target value of use.
13. a Straddle-type vehicle comprises having motor, stepless speed variator of exporting according to the operation control of accelerator operation member that is connected to described motor and the control gear of controlling the gear ratio of stepless speed variator, described Straddle-type vehicle comprises:
The control member that lowers category separates setting with described accelerator operation member, wherein
Described control gear is provided with normal mode that control target value is set, described control target value is set to than the pattern that lowers category of the more approaching low-grade side of described normal mode and the limiting value of the described control target value used of accelerating period again; And
Described control gear is controlled, and makes:
Operation in response to the described control member that lowers category, by the described pattern but not described normal mode is provided with described control target value of lowering category, if and behind the complete close the throttle of the control period of the described pattern that lowers category, quicken, described control target ratio then is set, makes the low-grade side of the limiting value of its described control target value that can not surpass again the accelerating period use.
14. Straddle-type vehicle according to claim 13, wherein:
Described control gear is provided with described control target value is set to the pattern that lowers category that more approaches a plurality of levels of low-grade side than described normal mode step by step, and
Described control gear is controlled feasible: in response to the operation of the described control member that lowers category, by pattern but not described normal mode is provided with described control target value of lowering category in the pattern that lowers category of described a plurality of levels, if and behind the complete close the throttle of the control period of the described given pattern that lowers category, quicken, described control target ratio then is set, makes the low-grade side of the limiting value of its described control target value that can not surpass again the accelerating period use.
15. according to claim 13 or 14 described Straddle-type vehicles, wherein said control gear uses the sensor of the operation amount that detects described accelerator operation member to judge whether quicken after cutting out described closure fully.
16. according to claim 13 or 14 described Straddle-type vehicles, wherein:
Described control gear is controlled, and makes:
If after the described pattern control period that lowers category is closed described closure fully, quicken, and
If the limiting value of the described control target value of being used than accelerating period again by the described control target value of the described pattern setting that lowers category more approaches high-grade side, then given control target value is set to described control target value; And
If the described control target value of the described pattern setting that lowers category more approaches low-grade side than the limiting value of the described control target value that accelerating period again uses, the described limiting value of the described control target value of accelerating period use but not described given control target value is set to described control target value more then.
17. Straddle-type vehicle according to claim 14, wherein said control gear is controlled feasible: if quicken after the described pattern control period that lowers category is closed described closure fully, the described pattern of lowering category that then approaches most high-grade side in the pattern that lowers category by described a plurality of levels is provided with described control target value.
18. Straddle-type vehicle according to claim 14, wherein said control gear is controlled feasible: if quicken after the described pattern control period that lowers category is closed described closure fully, then the described pattern of lowering category that more approaches high-grade side than the described pattern of using before just having quickened behind the complete close the throttle that lowers category in the pattern that lowers category of described a plurality of levels is provided with described control target value.
19. a Straddle-type vehicle comprises having motor, stepless speed variator of exporting according to the operation control of accelerator operation member that is connected to described motor and the control gear of controlling the gear ratio of stepless speed variator, described Straddle-type vehicle comprises:
The control member that lowers category separates setting with described accelerator operation member, wherein
Described control gear is provided with normal mode that control target value is set and the pattern that lowers category of described control target value being arranged to more approach than described normal mode low-grade side; And
Described control gear is controlled, and makes:
In response to the operation of the described control member that lowers category, by the described pattern but not described normal mode is provided with described control target value of lowering category; And
If quicken behind the described complete close the throttle of pattern control period that lowers category, the described pattern of lowering category that then approaches most high-grade side in the pattern that lowers category by described a plurality of levels is provided with described control target value.
20. a Straddle-type vehicle comprises having motor, stepless speed variator of exporting according to the operation control of accelerator operation member that is connected to described motor and the control gear of controlling the gear ratio of stepless speed variator, described Straddle-type vehicle comprises:
The control member that lowers category separates setting with described accelerator operation member, wherein
Described control gear is provided with normal mode that control target value is set and the pattern that lowers category of described control target value being arranged to more approach than described normal mode low-grade side, and described control gear is controlled feasible: in response to the operation of the described control member that lowers category, by the described pattern but not described normal mode is provided with described control target value of lowering category, and
If behind the described complete close the throttle of pattern control period that lowers category, quicken, then described control target value is set by the described pattern of lowering category that more approaches high-grade side than the described pattern of using before just having quickened behind the complete close the throttle that lowers category in the pattern that lowers category of described a plurality of levels.
21. according to each described Straddle-type vehicle among the claim 17-20, wherein said control gear is controlled feasible: if quicken after the control period of the control mode that lowers category is closed described closure fully, described control target value is set to make the engine speed control target value and does not temporarily reduce after just quickening.
22. according to each described Straddle-type vehicle among the claim 17-20, wherein:
The described pattern that lowers category that is provided with in the described control gear is provided with control target value based on engine speed; And
Described control gear is controlled feasible: if quicken behind the complete close the throttle of the control period of the described pattern that lowers category, when quickening, if compare with the engine speed control target value of just quickening to be provided with when preceding and closure is not opened fully hour by the engine speed control target value of the described pattern setting that lowers category, continue to use the engine speed control target value that has been provided with before just having quickened, up to described given engine speed control target value become be higher than just quicken before the described engine speed control target value of setting.
23. according to each described Straddle-type vehicle among the claim 17-20, wherein said control gear is controlled feasible: if quicken after the control period of the control mode that lowers category is closed described closure fully, described control target value is set to make the gear ratio control target value and does not temporarily change to high-grade side after just quickening.
24. according to each described Straddle-type vehicle among the claim 17-20, wherein:
Described control gear is controlled, and makes:
If after the described pattern control period that lowers category is closed described closure fully, quicken, and
When the set described control target value of the described pattern of using when quickening that lowers category is not opened fully for the high-grade side of the described control target value used before just having quickened and described closure,
Continue to use the described control target value of having used before just having quickened, up to when quickening, surpass by the described control target value of the described pattern setting that lowers category just quickened before the low-grade side of described control target value of use.
CN200810088067XA 2007-03-30 2008-03-31 Continuously variable transmission and straddle-type vehicle Active CN101275669B (en)

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CN104179921A (en) * 2014-08-02 2014-12-03 山东交通学院 Electronic control device for combined-type automobile automatic transmission
CN111255562A (en) * 2018-11-30 2020-06-09 陕西重型汽车有限公司 Power system and control method of foam fire fighting truck and foam fire fighting truck
CN114072601A (en) * 2019-07-11 2022-02-18 日产自动车株式会社 Control method and control device for continuously variable transmission

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CN104179921A (en) * 2014-08-02 2014-12-03 山东交通学院 Electronic control device for combined-type automobile automatic transmission
CN111255562A (en) * 2018-11-30 2020-06-09 陕西重型汽车有限公司 Power system and control method of foam fire fighting truck and foam fire fighting truck
CN114072601A (en) * 2019-07-11 2022-02-18 日产自动车株式会社 Control method and control device for continuously variable transmission
CN114072601B (en) * 2019-07-11 2023-04-11 日产自动车株式会社 Control method and control device for continuously variable transmission
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TWI340804B (en) 2011-04-21
JP5148215B2 (en) 2013-02-20

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