阅读说明：本技术 用于配备有双离合变速器的车辆的离合器控制方法 (Clutch control method for the vehicle equipped with double-clutch speed changer ) 是由 曹圣铉 于 2018-11-02 设计创作，主要内容包括：本发明提供一种设置有双离合变速器的车辆的离合器控制方法,其可以包括：由控制器确定车辆是否以最低档位或最高档位行驶以及是否完成近似档位的预接合；在确定学习驱动轴离合器扭矩的控制器认为学习到的驱动轴离合器扭矩可靠时,存储学习到的驱动轴离合器扭矩和当前离合器温度并且启动计时器；由控制器确定包括时间推移的多个条件,以确定非驱动轴离合器的触点学习是否必要；以及在确定触点学习必要时,由控制器使非驱动轴的近似档位脱离到空档并且执行非驱动轴的触点学习。(Whether the present invention provides a kind of clutch control method of vehicle for being provided with double-clutch speed changer, may include: to determine vehicle with lowest gear or highest gear traveling and the pre- engagement for whether completing approximate gear by controller；When determining that the controller of study drive shaft clutch moment of torque thinks that the drive shaft clutch moment of torque learnt is reliable, stores the drive shaft clutch moment of torque learnt and current clutch temp and start timer；Multiple conditions including time passage are determined by controller, whether the contact study to determine nonpowered axle clutch is necessary；And it is determining contact study when necessary, be detached from the approximate gear of nonpowered axle to neutral gear by controller and executing the contact study of nonpowered axle.)

1. a kind of clutch control method for the vehicle for being provided with double-clutch speed changer, the clutch control method includes following Step:

Determine whether the vehicle with lowest gear or highest gear traveling and complete the pre- of approximate gear by controller Engagement；

Drive shaft clutch moment of torque is learnt by the controller；

Determine that the controller for learning the drive shaft clutch moment of torque thinks the driving shaft clutch learnt in the controller When torque is reliable, stores the drive shaft clutch moment of torque learnt and current clutch temp and start timer；

By the controller determine including the time passage multiple conditions, with determine nonpowered axle clutch contact study whether It is necessary；

Determine contact study when necessary in the controller, by the controller make nonpowered axle approximate gear be detached to Neutral gear, and execute the contact study of the nonpowered axle clutch；And

When completing the contact and learning, the contact of the nonpowered axle clutch is updated to learn by the controller Value, and the approximate gear that pre- engagement is detached from again；And

Wherein, when controlling the nonpowered axle clutch later, the controller uses the contact updated.

2. the clutch control method of the vehicle according to claim 1 for being provided with double-clutch speed changer,

Wherein, learn the driving shaft clutch while controller controls driving shaft clutch under small sliding mode to turn round Square, and the difference between the drive shaft clutch moment of torque learnt and engine torque be less than predetermined reference torque when, really The drive shaft clutch moment of torque learnt calmly is reliable.

3. the clutch control method of the vehicle according to claim 1 for being provided with double-clutch speed changer,

Wherein, the controller drive shaft clutch moment of torque described in repetitive learning and obtains clutch temp at any time, and Difference between the new drive shaft clutch moment of torque learnt and the drive shaft clutch moment of torque of storage is more than the first predetermined reference It is worth, the difference between the clutch temp of the clutch temp and storage that newly obtain is more than the second predetermined reference value, and by institute When being equal to or more than third predetermined reference value by the time of timer determination is stated, determines the contact of the nonpowered axle clutch Study is necessary.

4. the clutch control method of the vehicle according to claim 3 for being provided with double-clutch speed changer,

Wherein, the clutch temp of storage includes the central plate of the double-clutch speed changer, the first pressure plate and the second pressure plate In the temperature of first time, and

Wherein, the clutch temp newly obtained includes the central plate of the double-clutch speed changer, the first pressure plate and the second pressure The temperature of second time of the plate after the first time.

5. the clutch control method of the vehicle according to claim 1 for being provided with double-clutch speed changer,

Wherein, the contact of nonpowered axle clutch described in the controller repetitive learning, in the contact and elder generation currently learnt When difference between the preceding contact learnt is equal to or less than four reference values, the touching for completing the nonpowered axle clutch is determined Point study.

Technical field

The present invention relates to the clutch control methods for the vehicle for being provided with double-clutch speed changer (DCT), and more specifically, It is related to the technology of the contact for updating clutch.

Background technique

Double-clutch speed changer (DCT) realizes quick and smooth shifting by engaging the gear of nonpowered axle in advance.

Vehicle with highest gear or lowest gear when driving, due to almost affirming that current gear is performed to highest respectively The approximate gear of -1 grade of gear or+1 grade of lowest gear of gear as highest gear and lowest gear, so engaging in advance non-driven The approximate gear of axis, and its state tends to keep constant.

However, the country wide in such as region in China or the U.S. is executed for a long time in the case where running at high speed, driving When moving axis is continuously rotated for a long time with highest gear, -1 grade of the highest gear of the approximate gear as nonpowered axle is constant to keep pre- Engagement state.Under current pre- engagement state, there is no the chances of the contact of study nonpowered axle clutch, so that learn Contact may be significantly different with practical contact, this may cause following problem, such as generates impact or combustion knock (engine Flare), wherein engine speed surprisingly rises in the case where executing gear shift when engaging nonpowered axle clutch later.

The information disclosed in background of invention part is only used for enhancing the understanding to the general background technique of invention, And it may be not considered as to recognize or imply in any form that this information forms the prior art well known by persons skilled in the art.

Summary of the invention

Each aspect of the present invention is intended to provide the clutch control method for being provided with the vehicle of double-clutch speed changer, is configured to By when be provided with the vehicle of DCT with highest gear or lowest gear for a long time when driving, due to causing the close of nonpowered axle In the case where keeping pre- engagement state for a long time like gear and the contact of nonpowered axle clutch being made to become inaccuracy, make non-driven Shaft clutch updates its contact suitably to prevent shift quality from deteriorating and ensure stable and stable shift feel.

An exemplary embodiment of the present invention, the clutch control method for being provided with the vehicle of double-clutch speed changer can be with It include: to determine vehicle whether with lowest gear or highest gear traveling and the pre-terminated for whether completing approximate gear by controller It closes；When determining that the controller of study drive shaft clutch moment of torque thinks that the drive shaft clutch moment of torque learnt is reliable, storage The drive shaft clutch moment of torque and current clutch temp that learn and start timer；It is determined by controller including the time Whether multiple conditions of passage, the contact study to determine nonpowered axle clutch are necessary；Determining contact study when necessary, by Controller is detached from the approximate gear of nonpowered axle to neutral gear and executes the contact study of nonpowered axle；And complete contact When study, the contact of nonpowered axle is updated to the value learnt by controller, and the approximate gear that pre- engagement is detached from again； And when controlling nonpowered axle clutch later, use the contact of update.

Controller learns drive shaft clutch moment of torque while can controlling driving shaft clutch under small sliding mode, and And the difference between the drive shaft clutch moment of torque learnt and engine torque be less than predetermined reference torque when, determine study The drive shaft clutch moment of torque arrived is in confidence level.

Controller repetitive learning drive shaft clutch moment of torque and can obtain clutch temp at any time；And learn newly Difference between the drive shaft clutch moment of torque arrived and the drive shaft clutch moment of torque of storage is more than the first predetermined reference value, is newly obtained Difference between the clutch temp of the clutch temp and storage that take is more than the second predetermined reference value, and is measured by timer By the time be equal to or more than third predetermined reference value when, determine nonpowered axle clutch contact study be necessary.

Clutch temp may include the temperature of the central plate of clutch, the first pressure plate and the second pressure plate.

Controller can be with the contact of repetitive learning nonpowered axle clutch, in the contact currently learnt and previously study When the difference between contact arrived is equal to or less than four reference values, the contact study for completing nonpowered axle is determined.

The present invention is configured to by when being provided with the vehicle of DCT with highest gear or lowest gear for a long time when driving, Due to causing the approximate gear of nonpowered axle to keep pre- engagement state for a long time, so the contact of nonpowered axle clutch becomes not In accurate situation, so that nonpowered axle clutch is suitably updated its contact prevent shift quality from deteriorating and ensure to stablize and Stable shift feel.

Methods and apparatus of the present invention has other feature and advantage, these feature and advantage will be in drawings included herein And it is described in detail below in become obvious or be explained in more detail, attached drawing and described in detail below be used to interpret this together Certain principles of invention.

Detailed description of the invention

Fig. 1 is the diagram for showing the configuration that can be applied to the vehicle for being provided with DCT of the invention；；

Fig. 2 is the concept map that can be applied to the configuration of DCT of the invention；And

Fig. 3 is the clutch control for showing the vehicle with double-clutch speed changer of an exemplary embodiment of the present invention The flow chart of the exemplary embodiment of method.

It is appreciated that the drawings are not necessarily drawn to scale, the various features for illustrating basic principle of the invention are presented Slightly simplified expression.Specific design feature of the invention includes such as specific size, direction, position and shape as disclosed herein Shape, these specific design features will partly be determined by especially expected application and use environment.

Appended drawing reference refers to identical or equivalent component of the invention in several figures of attached drawing in the figure.

Specific embodiment

Now with detailed reference to various embodiments of the present invention, its example is shown in the drawings and is retouched below It states.Although the present invention will be described in conjunction with exemplary embodiments, it should be appreciated that, this specification is not intended to limit the present invention It is formed on these exemplary embodiments.On the other hand, the present invention is not only intended to cover exemplary embodiment, but also being intended to cover can With include various alternative solutions in the spirit and scope for the invention being defined by the following claims, modification, etc. Tongfangs Case and other embodiments.

Fig. 1 is the diagram for showing the configuration that can be applied to the vehicle for being provided with DCT of the invention.By the dynamic of engine E Power is selectively supplied to two input shafts I1 and I2 via two the clutches CL1 and CL2 of DCT, and will be in DCT The power supply of the engine of gear shift is completed to driving wheel W.

Controller CLR may be coupled to ECU (control unit of engine) with receive such as engine torque information and to Engine E requested torque reduces, and connects so that for controlling clutch actuator CA and gear actuator GA, which is caused Two clutches of dynamic device control DCT, and the gear actuator changes the gear engagement state of DCT.

Controller CLR is configurable to receive the signal of accelerator pedal sensors (APS) and is configured to receive DCT's The revolving speed etc. of each input shaft I1 and I2.

Two input shafts I1 and I2 can be separated, and an input shaft realizes current gear and transmits driving torque, and Another input shaft will not transmit for realizing new target gear and driving torque.Hereinafter, current gear is realized simultaneously And the input shaft of transmitting driving is referred to as " drive shaft ", is claimed for new target gear without transmitting the input shaft of driving torque For " nonpowered axle ".

In addition, the clutch for being connected to drive shaft is referred to as " driving shaft clutch ", and it is connected to the clutch of nonpowered axle Device is referred to as " nonpowered axle clutch ".

On the other hand, one in two input shafts is configurable to be mainly used for realizing odd gear and is referred to as surprise Number number axis, and another input shaft be configurable to for realizing even gear and as reverse gear R shelves and claimed For even-numbered axis.For example, odd-numbered axis is configurable to realize 1 grade, 3 grades and 5 in the case where advance six speed transmission Shelves, and even-numbered axis is configurable to realize 2 grades, 4 grades, 6 grades and R grades.

Fig. 2 schematically explains the structure of DCT with partial cross section, and clutch plate CH can be set the two of central plate CP Side, and the first pressure plate P1 and the second pressure plate P2 can be set, for clutch plate CH selectively to be pressed to center Plate CP is to transmit power.Two central plate CP can be connected respectively to two input shafts I1 and I2, so that coming from such as engine The power of power source can be for delivery to each input shaft I1 and I2.

With reference to Fig. 3, an exemplary embodiment of the present invention is provided with the clutch control of the vehicle of double-clutch speed changer Whether the exemplary embodiment of method may include: pre- engagement verification step S10, determine vehicle with highest by controller CLR Gear or lowest gear traveling and the pre- engagement for whether completing approximate gear；Timer initiation step S20 learns determining When the controller CLR of drive shaft clutch moment of torque thinks that the drive shaft clutch moment of torque learnt is reliable, the drive learnt is stored Shaft clutch torque and current clutch temp and start timer；Condition determination step S30, it is true by controller CLR It surely include multiple conditions of time passage, whether the contact study to determine nonpowered axle clutch is necessary；Contact learning procedure S40 is determining contact study when necessary, be detached from the approximate gear of nonpowered axle to neutral gear by controller CLR and executed The contact of nonpowered axle learns；And rejoin step S50, when completing contact and learning, by controller CLR by nonpowered axle Contact be updated to the value learnt, and the approximate gear that pre- engagement is detached from again；And later control nonpowered axle from When clutch, the contact of update is used.

For example, lowest gear is first grade, highest gear in the case where DCT as described above may be implemented to advance six speed It is sixth speed, and approximate gear is second gear or fifth speed.Vehicle with lowest gear when driving, approximate gear is second Shelves, and vehicle is with highest gear that approximate gear is fifth speed when driving.

Therefore, in the case where being run using sixth speed as highest gear, drive shaft is even-numbered axis and non-driven Axis is odd-numbered axis, and engages approximate gear in advance.

Study driving shaft clutch is turned round while controller CLR can control driving shaft clutch under small sliding mode Square.

That is, controller CLR can be in the slight sliding for generating and keeping small Yu 100RPM in driving shaft clutch While, according to the relationship for keeping engine torque to be equal to clutch moment of torque constant during slight sliding come by engine torque It is set as clutch moment of torque, and by using clutch moment of torque and is formed between the clutch actuator stroke of clutch moment of torque Relationship update T-S curve.

Herein, T-S curve (torque-stroke curve) is shown between clutch moment of torque and clutch actuator stroke The curve graph of relationship determines the clutch for being used to form desired clutch moment of torque when present controller CLR control clutch in fact Actuator range.

When difference between the drive shaft clutch moment of torque learnt and engine torque is less than predetermined reference torque, control Device CLR processed can determine that the drive shaft clutch moment of torque that study is arrived is in confidence level.

Certainly, controller CLR can from ECU receive engine torque with comparative learning to drive shaft clutch moment of torque, And if difference is less than reference torque, such as 10Nm to 20Nm, then controller CLR can determine the drive shaft clutch that study is arrived Device torque is reliable.

In this way, it is in order to prevent in the touching of study nonpowered axle that controller CLR, which learns the reason of drive shaft clutch moment of torque, During point, all nonpowered axle clutch moment of torque characteristics and drive shaft clutch moment of torque characteristic are unexpectedly in inaccurate state, Or it by study later, is driven by learning the contact of nonpowered axle thereafter with accurately being grasped first before contact changes The clutch moment of torque characteristic of moving axis.

Controller CLR repetitive learning drive shaft clutch moment of torque and can obtain clutch temp at any time.

Using the drive shaft clutch moment of torque and clutch temp newly learnt, controller CLR can be determined for determining Whether need to learn the condition of the contact of nonpowered axle clutch.That is, in the drive shaft clutch moment of torque newly learnt Difference between the drive shaft clutch moment of torque of storage is more than the first predetermined reference value, the clutch temp newly obtained and storage Clutch temp between difference be more than the second predetermined reference value, and be equal to or more than by timer measurement by the time When third predetermined reference value, controller CLR can determine the contact for needing to learn nonpowered axle clutch.

For example, the difference between the new drive shaft clutch moment of torque learnt and the drive shaft clutch moment of torque of storage is super When crossing the first reference value (such as 0.5mm), the clutch temp newly obtained when being converted into clutch actuator stroke and storage Clutch temp between difference be more than the second reference value (such as 30 DEG C), and being equal to by the time by timer measurement Or when being greater than third predetermined reference value (such as 5 minutes), controller CLR can determine that the contact of nonpowered axle is meaningfully changed Become, so that it is determined that needing to learn the contact of nonpowered axle clutch.

Therefore, the first reference value to third reference value be not limited to shown in value, but be appropriately selected as in can be with The level for needing to update the contact of nonpowered axle is determined according to above-mentioned technical purpose.

On the other hand, clutch temp may include temperature, the temperature of the first pressure plate P1 at the central plate CP of clutch The temperature of degree and the second pressure plate P2.

Controller CLR can obtain clutch temp by temperature sensor or temperature model, by by central plate The average temperature value of CP, the first pressure plate P1 and the second pressure plate P2 are set as clutch temp to determine that the temperature of clutch becomes Change, the temperature change of clutch is determined based on the temperature change of most serious among these three components, and passing through will be to three Component application different weights value and the weighted average obtained is set as clutch temp to determine the temperature change of clutch.

Therefore, in any case, this method can be enough to reflect nonpowered axle clutch by the temperature change of clutch The variation of the contact of device.

Controller CLR can be with the contact of repetitive learning nonpowered axle clutch, and in the currently contact that learns and elder generation When difference between the preceding contact learnt is equal to or less than four predetermined reference values, determine that the contact for completing nonpowered axle is learned It practises.

That is, the contact of controller CLR repetitive learning nonpowered axle clutch, in the difference with previous learning value When lower than certain level, the contact study for completing nonpowered axle is determined.Herein, the 4th reference value can be according to above-mentioned purpose It is determined by testing and analyzing with design method, and such as being determined as 0.5mm, to be converted into clutch actuator row Journey.

As reference, the side as the contact of study clutch such as the method that study clutch actuator stroke can be used Method, the clutch actuator stroke are detected as while discharging clutch the angular acceleration of sudden change clutch and so It is slowly engaged by contact afterwards.

Once completing the contact study of nonpowered axle, then the contact of nonpowered axle is updated to learn by controller CLR Value and the approximate gear for engaging release in advance, so that the gear shift after being is ready.

Certainly, when controlling nonpowered axle clutch later, controller CLR controls nonpowered axle using the contact of update Clutch, thus by preventing shifting shock or combustion knock using correct contact.

In order to facilitate explanation and accurate definition in the appended claims, word " top ", " lower part ", " inside ", " outer Portion ", "upper", "lower", " top ", " lower part ", " upward ", " downward ", " front ", " rear portion ", " rear ", " inside ", " outer Side ", " inside ", " outside ", "inner", "outside", " internal ", " external ", " forward " and " backward ", for reference to as shown in the figure The position of feature of exemplary embodiment these features are described.

For the purpose of illustration and description, the foregoing description of presented certain exemplary embodiments of the invention.They It is not intended to detailed or limits the invention to disclosed precise forms, and many modifications can be carried out apparently according to above-mentioned introduction And variation.It selects and describes exemplary embodiment to explain the certain principles and their practical application of invention, so that Others skilled in the art can implement and utilize various exemplary embodiments and their various substitutions of the invention Scheme and modification.The range of invention is intended to by claims appended hereto and their equivalents.