CN103498879B - The controlling method that a kind of clutch for vehicular automatic transmission engages and device - Google Patents
The controlling method that a kind of clutch for vehicular automatic transmission engages and device Download PDFInfo
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- CN103498879B CN103498879B CN201310375371.3A CN201310375371A CN103498879B CN 103498879 B CN103498879 B CN 103498879B CN 201310375371 A CN201310375371 A CN 201310375371A CN 103498879 B CN103498879 B CN 103498879B
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Abstract
The invention discloses controlling method and device that a kind of clutch for vehicular automatic transmission engages.Described controlling method comprises falls rotating speed step and clutch engagement step.Described rotating speed step of falling is: before clutch starts transmitting torque, whether the rotating speed judging motor by engine electronic control unit is being suitable within the scope of the safe speed of rotation that clutch engages, and, when the rotating speed of described motor is higher than described safe speed of rotation scope, initiatively taked to fall rotational speed operation by described engine electronic control unit, the rotating speed of described motor is reduced within the scope of described safe speed of rotation; Described clutch engagement step is: control described clutch by transmission control unit and engage.This design prevents engine speed when clutch engages too high and cause hardware damage, decrease the dependence of control system to CAN communication, thus reduce rate of fault.
Description
Technical field
The present invention relates to Clutch Control field, the controlling method that especially a kind of clutch for vehicular automatic transmission engages and device.
Background technique
When the driver that driving experience is less uses the vehicle of automatic transmission, a kind of comparatively common faulty operation is: the bend the throttle when neutral gear (N shelves) slides, and then directly reverses and travels shelves (as D shelves).This faulty operation easily causes and when engine speed is higher, clutch is engaged, thus causes vehicle hardware to damage.
For the hardware damage avoiding this faulty operation to cause, in the prior art, a kind of solution is: before clutch engages, send one by TCU to ECU fall rotating speed request, ECU falls rotating speed request to reduce rotating speed and the moment of torsion of motor in response to this, until engine speed reaches the safety value that an applicable clutch engages; If the tach signal display engine speed that TCU gathers meets the requirement that clutch is re-engaged, then TCU solenoidoperated cluthes are re-engaged, otherwise TCU can wait for, until engine speed meets the requirement that clutch engages, then TCU ability solenoidoperated cluthes engage.But there is certain drawback in such method:
If the communication between 1 ECU and TCU is interrupted due to fault, then the method is by no longer valid;
2, due to the execution of this method, vehicle is made cannot to carry out launching starting (be similar in manual vehicle, driver after violent stepping on accelerator pedal when original place neutral gear, hangs forward gears and starts to walk rapidly);
If the time that 3 vehicles are in neutral gear is shorter, before gear gets back to traveling shelves, engine speed is still higher, and clutch need wait for that engine speed drops to below safety value, just can recombine.This can cause the clutch long period cannot be in conjunction with, and vehicle is in N shelves, does not have power, affects driving experience.
Summary of the invention
The controlling method that the object of the present invention is to provide a kind of clutch for vehicular automatic transmission newly to engage and device, to overcome or to solve at least one defect of the prior art at least in part.
In order to reach this object, the invention provides the controlling method that a kind of clutch for vehicular automatic transmission engages, comprising:
Rotating speed step is fallen: before clutch starts transmitting torque, whether the rotating speed judging motor by engine electronic control unit is being suitable within the scope of the safe speed of rotation that clutch engages, and, when the rotating speed of described motor is higher than described safe speed of rotation scope, when the request not from other control unit, initiatively taked to fall rotational speed operation by described engine electronic control unit, the rotating speed of described motor is reduced within the scope of described safe speed of rotation;
Clutch engagement step: engage by transmission control unit controls described clutch.
Alternatively, fall rotating speed step described in perform when described clutch separation completes; Wherein, alternatively, fall signal when rotating speed step drops to zero in response to the clutch pressure of described clutch described in and perform.
Alternatively, fall rotating speed step described in perform when described clutch starts to engage; Wherein, alternatively, fall rotating speed step described in perform in response to lever is switched to the gear switch signal of traveling shelves from neutral gear.
Alternatively, described clutch engagement step is performed when described transmission control unit does not judge that the rotating speed of described motor is whether within the scope of described safe speed of rotation.
Alternatively, fall rotational speed operation described in and comprise oil-break.
Alternatively, when described clutch be in not completely jointing state, ignore acceleration pedal position signal.
Alternatively, described controlling method also comprises selection step: fall rotating speed step described in optionally performing according to the input signal of user.
The invention also discloses the control gear that a kind of clutch for vehicular automatic transmission engages, comprising:
Engine electronic control unit, it comprises and falls rotating speed module, describedly fall rotating speed that rotating speed module is configured to judge motor before clutch starts transmitting torque and whether be suitable within the scope of the safe speed of rotation that clutch engages, and, when the rotating speed of described motor is higher than described safe speed of rotation scope, initiatively taked to fall rotational speed operation by described engine electronic control unit, the rotating speed of described motor is reduced within the scope of described safe speed of rotation;
Transmission control unit, it is configured to control described clutch and starts to engage.
Alternatively, described control gear also comprises selection unit, and it is configured to the input signal receiving user, and falls rotating speed module described in enabling or disabling according to this input signal.
Alternatively, described transmission control unit is configured to control described clutch when not judging that the rotating speed of described motor is whether within the scope of described safe speed of rotation and engages.
Compared with prior art, the present invention at least has following technique effect:
1) according to the present invention, before clutch starts transmitting torque, engine speed judgement can be carried out by ECU.When rotating speed is higher than safe speed of rotation scope, ECU, initiatively takes to fall rotational speed operation under the request of other control units not.
This design makes before clutch starts to engage, and engine speed can be in safe speed of rotation scope, avoids engine speed when clutch engages too high and cause hardware damage.In addition, ECU initiatively reduces engine speed under not from the request of other control units, decreases the number of communications with other control units, decreases the dependence of control system to CAN communication to a certain extent, thus reduce rate of fault.
In above process, after ECU carries out reduction of speed to motor, engine speed maintains in the comparatively slow-speed of revolution, and engine noise can be made so less.
2) according to the present invention, TCU can perform clutch engagement step when judging engine speed.This operation shortens by N shelves or P shelves to travelling shelves or travelling power Recovery time when switching shelves, improve driving.
3) according to the present invention, when clutch be in not completely jointing state, ECU ignores acceleration pedal position signal.This design prevents the hardware damage that may cause because of driver's faulty operation in clutch's jointing process.
4) according to the present invention, driver can unrestricted choice whether use described in rotating speed step is fallen.Like this when rotating speed step does not fall in driver described in choice for use, can realize launching starting.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to technological means of the present invention can be better understood, and can be implemented according to the content of specification, and can become apparent to allow above and other objects of the present invention, feature and advantage, below especially exemplified by the specific embodiment of the present invention, and coordinate accompanying drawing, be described in detail as follows.
Accompanying drawing explanation
The flow chart of controlling method of Fig. 1 for providing according to one embodiment of the invention;
Being switched to N shelves by D shelves at vehicle and then being switched to the change curve of gear switching signal, actual-gear, acceleration pedal position signal, engine speed, Engine torque, clutch pressure the occasion of D shelves from N shelves of the controlling method that Fig. 2 provides for one embodiment of the invention;
The structural representation of the control gear that Fig. 3 provides for one embodiment of the invention.
Description of reference numerals is as follows:
Rotating speed step 101 clutch engagement step 102 is fallen
First curve 410 second curve 420
3rd curve 430 the 4th curve 440
5th curve 450 the 6th curve 460
7th curve 470 lever 501
Hall transducer 502 transmission control unit 503
CAN 504 clutch 505
Engine electronic control unit 506 engine rotation speed sensor 507
Vehicle speed sensor 508 accelerator pedal position sensor 509
Throttle opening controlling device 510 ignition advance angle controlling device 511
Oil sprayer 512
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.
Hereinafter, mentioned " clutch start transmitting torque before ", can refer to that vehicle is switched in the process travelling shelves (such as D shelves, R shelves, S shelves, M shelves) by N shelves or P shelves when starting to walk, vehicle is switched in the process of traveling shelves of same direction of travel after being switched to N shelves by traveling shelves in the process of moving again, or travel shelves by one in vehicle travel process to be directly switch to another and to travel in the process of shelves, the clutch 505 of vehicle not yet starts to engage or clutch has completed pressure preparatory stage and/or oil-filled stage but not yet start the occasion of transmitting torque.Technological scheme in embodiment goes for all automatic transmission vehicles such as AT, DCT, AMT, CVT.
The flow chart of the controlling method that Fig. 1 provides for one embodiment of the invention.The method can comprise falls rotating speed step 101 and clutch engagement step 102.Falling in rotating speed step 101, before clutch 505 starts transmitting torque, whether the rotating speed judging motor by engine electronic control unit (ECU) 506 is being suitable within the scope of the safe speed of rotation that clutch 505 engages, and, when the rotating speed of described motor is higher than described safe speed of rotation scope, initiatively taked to fall rotational speed operation by described engine electronic control unit 506, the rotating speed of described motor is reduced within the scope of described safe speed of rotation.In clutch engagement step 102, engage by transmission control unit (TCU) 503 controls described clutch 505.This design makes before clutch starts joint, and engine speed can be in safe speed of rotation scope, avoids when clutch engages and causes hardware damage because engine speed is too high.In addition, ECU initiatively reduces engine speed under not from the request of other control units, decreases the number of communications with other control units, decreases the dependence of control system to CAN communication to a certain extent, thus reduce rate of fault.
It will be appreciated that, the present invention is not intended to limit the order of falling rotating speed step 101 and clutch engagement step 102 and starting to perform, as long as but as falling in rotating speed step 101 and limiting, the rotating speed of described motor is reduced within the scope of described safe speed of rotation before clutch 505 starts transmitting torque.Can know from the following description, this falls rotating speed step 101 and can start to perform before clutch engagement step 102, also can start to perform with clutch engagement step 102 simultaneously, even can be slightly later to clutch engagement step 102 and start to perform.
Fig. 2 is switched to N shelves by D shelves at vehicle and then is switched to the change curve of gear switching signal, actual-gear, acceleration pedal position signal, engine speed, Engine torque, clutch pressure the occasion of D shelves from N shelves.In fig. 2, also represented by dashed line go out method to be conventionally switched to the change curve of clutch pressure D shelves process from N shelves at vehicle, to compare with method of the present invention.In the change curve shown in Fig. 2, transverse axis is time shaft T.Scene below in conjunction with Fig. 2 more specifically describes an embodiment of controlling method of the present invention.
For the first curve 410, expression be the gear switch signal of vehicle, it corresponds to the position of the lever that driver handles.Before time point t1, gear is in D shelves.At time point t1, gear is switched to N shelves from D shelves.At time point t1 to t3, gear remains on N shelves.At time point t3, gear is switched to D shelves from N shelves.After time point t3, lever remains on D shelves.
For the second curve 420, expression be the actual-gear of the speed changer corresponding with the gear switch signal of the first curve 410.Here, after actual-gear refers to that transmission control unit receives the gear switch signal shown in the first curve 410, the state after solenoidoperated cluthes are separated or have engaged.Because the handoff procedure of clutch between Engage and disengage state needs the regular hour, therefore, actual-gear can postpone in gear switch signal.As shown in Figure 2, be switched to the time point t2 after the time point t1 of the gear switch signal of N shelves at expression gear from D shelves, the actual-gear of speed changer is just transformed into N shelves from D shelves.Same, be switched to the time point t5 after the time point t3 of the gear switch signal of D shelves from N shelves at expression gear, the actual-gear of speed changer is just transformed into D shelves from N shelves.
For the 3rd curve 430, expression be acceleration pedal position signal according to the present invention's vehicle in above process.In above-mentioned whole process, accelerator pedal is all by about 40% of the whole stroke of driver's bend the throttle.It is to be appreciated that acceleration pedal position signal is here only represent a kind of exemplary operation of driver to accelerator pedal.From hereafter, when engaging according to solenoidoperated cluthes of the present invention, this acceleration pedal position signal can be ignored.Therefore, in practice, represent that the 3rd curve 430 of acceleration pedal position signal can be other shape any.
For the 6th curve 460, expression be according to the present invention in above process clutch 505 pressure change.Before time point t1, clutch 505 engages completely.At time point t1, in response to the gear switch signal being switched to N shelves from D shelves shown in the first curve 410, clutch 505 starts to be separated gradually, and clutch pressure reduces gradually, until be separated completely to time point t2 clutch, clutch pressure is 0.As shown in the second curve 420, put t2 at this moment, actual-gear is changed to neutral gear.From time point t2 to time point t3, clutch pressure remains 0.At time point t3, in response to the gear switch signal being switched to D shelves from N shelves shown in the first curve 410, clutch starts to engage gradually, and clutch pressure starts to increase gradually, until engage completely to time point t5 clutch.As shown in the second curve 420, put t5 at this moment, the actual-gear of vehicle also arrives D shelves.For the 7th curve 470 as a comparison, expression be clutch 505 in above process in prior art pressure change.Can find out, in the 7th curve 470, clutch 505 just starts to engage from the time point t4 being later than time point t3, does not engage complete yet at time point t5.Visible, technological scheme of the present invention relative to existing technologies, can make clutch 505 more early start to engage, also can more early engage completely, shorten vehicle by the power Recovery time of N shelves to D shelves, improve the driving of vehicle.
For the 4th curve 440, expression be according to the present invention in above process vehicle engine speed change, its embody be when when time point t3, engine speed is within the scope of safe speed of rotation engine speed change.Can find out, after time point t2, engine speed has of short duration rising quickly.This is that during to time point t2, clutch pressure is entirely 0, and now motor is non-loaded, and the rotating speed short time rises quickly, and can reduce gradually subsequently because clutch pressure reduces gradually when time point t1 to t2.
For the 5th curve 450, expression be a kind of situation according to the present invention's Engine torque change of vehicle in above process, the Engine torque change that what it embodied is when engine speed exceeds safe speed of rotation scope when time point t3.The curve 455 of dotted portion represents the another kind of situation according to the present invention's Engine torque change of vehicle in above process, but it embodies is Engine torque change when engine speed is within the scope of safe speed of rotation when time point t3.
It is to be appreciated that for the 5th curve 450 and curve 455, what it represented is start to perform method of the present invention at time point t3.Particularly, at time point t3, perform and fall rotating speed step 101 shown in Fig. 1, judge that the rotating speed of motor is whether within the scope of the safe speed of rotation being suitable for clutch joint by ECU.In practice, this falls rotating speed step 101 and can perform in response to the lever shown in the first curve 410 is switched to the gear switch signal of D shelves at time point t3 from N shelves.If fall in rotating speed step 101 judge that engine speed is within the scope of this safe speed of rotation at this, then as shown in curve 455, Engine torque can keep substantially constant, and that is ECU does not carry out falling rotational speed operation.Meanwhile, clutch 505 starts to engage at time point t3, namely performs the clutch engagement step 102 shown in Fig. 1.Otherwise, at gear in the situation such as the N shelves waiting time is too short, engine speed may exceed safe speed of rotation scope at time point t3, but be readily appreciated that although this does not obviously illustrate in the 4th curve 440 of Fig. 2, now, fall in rotating speed step 101 judge that engine speed is higher than this safe speed of rotation scope at this.Under these circumstances, now in order to reach the object making engine speed reduce fast, fall in rotating speed step 101 can take such as oil-break rotational speed operation falls, thus at time point t4, engine speed to be reduced within the scope of safe speed of rotation.Similarly, clutch 505 still starts to engage at time point t3.
As can be seen from the 5th curve 450 and the 6th curve 460 of Fig. 2, to fall the action that rotational speed operation and clutch 505 start to engage be all start at time point t3 according to of the present invention, namely simultaneous, and need not shown in the 7th curve 470 representing prior art, the time point t4 by the time within the scope of the near safe speed of rotation of engine speed just starts to engage.It will be appreciated that, the processes such as pressure preparatory stage, oil-filled stage, moment of torsion transfer stages and synchronization stage are generally included because clutch 505 engages, its engaging time is longer, before clutch 505 moment of torsion transmittance process starts, when ECU has enough oil-breaks, chien shih engine speed drops to the safety range that clutch 505 engages.Therefore, in the present invention, transmission control unit can not judge that engine speed is whether within the scope of safe speed of rotation, and only described clutch engagement step is performed according to gear switch signal.Thus, in principle, the execution of the clutch engagement step 102 in the present invention can independent of falling rotating speed step 101, and the beginning execution sequence between them is only by the restriction of " being reduced within the scope of safe speed of rotation by the rotating speed of described motor before transmitting torque clutch 505 " this condition.
Although fall rotating speed step 101 and clutch engagement step 102 in fig. 2 in example all to start to perform at time point t3, as indicated earlier, ECU can reduce engine speed to its safe speed of rotation scope rapidly by the rotational speed operation that falls of such as oil-break.Therefore, in principle, the time of implementation of falling rotating speed step 101 even can be slightly later to the time of implementation of clutch engagement step 102, as long as guarantee to be reduced within the scope of this safe speed of rotation by the rotating speed of described motor before clutch 505 starts transmitting torque.Certainly, when falling rotating speed step 101 and clutch engagement step 102 all starts to perform at time point t3, they can perform in response to same signal (as being switched to the gear switch signal of D shelves in the first curve 410 from N shelves), and this is conducive to the realization of simplified control system.
Can be seen by the 7th curve 470 of the 6th curve 460 of the present invention of the correspondence in comparison diagram 2 and corresponding prior art, in the present invention, clutch 505 more early starts to engage, also can more early engage completely, shorten vehicle by the power Recovery time of N shelves to D shelves, improve the driving of vehicle.
In another embodiment of the present invention, the random time point fallen in the time period before time point t2 that rotating speed step 101 can complete in clutch separation starts with clutch the time point t3 engaged performs.Such as, this falls rotating speed step 101 and can perform at time point t2, and now, this falls signal when rotating speed step 101 can drop to zero in response to the clutch pressure of described clutch 505 and performs.Of the present inventionly falling rotating speed step by earlier performing, before gear shift, both earlier engine speed can be down to the safe speed of rotation scope that clutch 505 engages, also can save oil consumption.
In other embodiments of the invention, the D shelves in the said process shown in Fig. 2 can be changed to R shelves or other travelings shelves (as S shelves), and/or the N shelves in said process are changed to P shelves.
The detailed operation of an embodiment of the clutch control method of vehicular automatic transmission of the present invention is described below in conjunction with Fig. 2 and Fig. 3.
When lever is in D shelves, driver's bend the throttle, vehicle is with 3 grades of travelings.Now lever position is D, and actual-gear is 3 grades, and clutch engages.In this exemplary operation, as shown in the 3rd curve 430 of Fig. 2, acceleration pedal position signal remains unchanged in whole process, that is, the amount that driver's bend the throttle is identical, 40% of whole stroke as previously described.
At time point t1, driver is release the gas pedal not, lever is pushed N shelves (need be appreciated that this may be the driver's operation of an inappropriate even mistake), as shown in first curve 410 of time point t1.After lever change in location, the sensor be connected with lever sends lever position signal gear switch signal in other words, passes to TCU, and by TCU and CAN, passes to ECU.After TCU receives lever position signal, start to lay down clutch pressure, until clutch is separated completely, make speed changer enter neutral gear, as shown in the 6th curve between time point t1-t2.Now engine loading reduces suddenly, turns round although ECU starts to fall, delayed due to throttle adjustment, still there will be of short duration engine speed and to rise quickly phenomenon, as in the 4th curve immediately following shown in the part after time point t2.After ECU receives gear switch signal, according to current gear, the speed of a motor vehicle and throttle opening amount signal, judge driver's operation, ignore acceleration pedal position signal, start adjusting air inflow quantity, reduce Engine torque.Although now driver still steps on the accelerator pedal of 40%, but ECU controls throttle inflow amount, the moment of torsion maintaining engine idling operation is only provided, simultaneously because motor runs (but may still higher than the safe speed of rotation scope being suitable for clutch and engaging) with the comparatively slow-speed of revolution, engine noise is also made significantly to reduce.
At time point t3, lever is pulled back to D shelves by driver, and the sensor be connected with lever sends gear switch signal, passes to TCU, and passes to ECU by TCU and CAN.When ECU receives gear switch signal, judge that driver travels for recovering D shelves according to current gear, the speed of a motor vehicle and acceleration pedal position signal.ECU judges engine speed, if now engine speed exceedes the safe speed of rotation scope that clutch engages, then ECU is under the request not from other control units particularly TCU, initiatively takes to fall rotational speed operation as oil-break, engine speed is declined rapidly.If now engine speed has been reduced to the allowed band that clutch 505 is re-engaged, then can continue to keep idling moment of torsion.When TCU receives gear switch signal, when not judging that the rotating speed of described motor is whether within the scope of described safe speed of rotation, directly start to perform described clutch engagement step 102.
In other embodiments, when by of the present invention fall rotating speed step 101 perform as time point t2 in advance, fall rotational speed operation can also comprise regulate throttle opening and/or regulate firing angle, such as reduce throttle opening and/or reduce ignition advance angle.
In other embodiments of the invention, 3 grades in said process any one gear that can replace with R shelves or D shelves, also can replace to the drivable position such as S shelves, M shelves; N shelves in said process also can replace to P shelves.
In the above-described embodiments, can when clutch 505 is in not complete jointing state (as Fig. 2 time point t1 to time point t5 between the random time point of time period, and do not comprise time point t1, time point t5; Or as vehicle start to walk from static time), ECU ignores acceleration pedal position signal, and now driver's bend the throttle also can not produce the effect that engine speed is increased.This being designed with is beneficial to performing the inventive method in the process reducing engine speed, makes engine speed increase due to the faulty operation of driver.
It will be appreciated that, " ECU ignores acceleration pedal position signal when clutch 505 is in not complete jointing state " this feature is not limited to application in the present invention, but does not such as implement also can apply in controlling method of the present invention and system in other occasion.Such as, this can prevent the unfamiliar driver of driving operation because inappropriate or operate accelerator pedal (as the bend the throttle when neutral gear slides, then directly reversing D shelves) mistakenly and cause damage to vehicle hardware.Best, driver can select whether close this function ignoring acceleration pedal position signal according to the needs of oneself, like this can after this function of closedown, and what realize vehicle launches starting (with manual vehicle, after driver steps on the gas suddenly when original place neutral gear, hang forward gears and start to walk rapidly).
Whether in the above-described embodiments, can be enabled fall rotating speed step 101 by driver's unrestricted choice, this selects step to realize by one, such as, falls rotating speed step 101 described in optionally performing according to the input signal of user.This design gives the larger selection freedom of driver and can when wanting realization to launch starting, select to close the function ignoring acceleration pedal position signal and fall rotating speed step 101 with selection closedown, make vehicle to realize better launching starting, avoid and fall rotating speed step 101 and launch the obstruction that causes of starting to walk to vehicle.
In the above-described embodiments, the safe speed of rotation range set that described clutch 505 engages is the speed range referring to be less than or equal to 2000rpm, also can be set smaller than or equal the speed range of 1950rpm.
The invention also discloses the control gear that a kind of clutch for vehicular automatic transmission engages, comprise: engine electronic control unit 506, it comprises and falls rotating speed module, describedly fall rotating speed that rotating speed module is configured to judge motor before clutch 505 starts transmitting torque and whether be suitable within the scope of the safe speed of rotation that clutch 505 engages, and, when the rotating speed of described motor is higher than described safe speed of rotation scope, initiatively taked to fall rotational speed operation by described engine electronic control unit 506, the rotating speed of described motor is reduced within the scope of described safe speed of rotation, transmission control unit 503, it is configured to control described clutch 505 and starts to engage.
The structural representation of the control gear that Fig. 3 provides for one embodiment of the invention.Can find out, in the embodiment described in figure 3, lever 501 is connected with Hall transducer 502; Hall transducer 502 is connected with transmission control unit signal; Transmission control unit 503 is connected with clutch 505 signal, for joint and the process of disconnection of solenoidoperated cluthes 505.Engine rotation speed sensor 507, vehicle speed sensor 508, accelerator pedal position sensor 509 are connected with engine electronic control unit 506 signal respectively; Throttle opening controlling device 510, ignition advance angle controlling device 511 signal are connected with engine electronic control unit 506 signal respectively with oil sprayer 512.Transmission control unit 503, engine electronic control unit 506 are connected with CAN 504 signal respectively.
In one embodiment of the invention, described transmission control unit 503 is configured to control described clutch 505 when not judging that the rotating speed of described motor is whether within the scope of described safe speed of rotation and engages.This design makes clutch 505 hinge structure can more early start to engage, and also more early can engage completely, thus shorten the power Recovery time of vehicle, improve the driving of vehicle.
In another embodiment of the present invention, described control gear also comprises selection unit (not shown), and it is configured to the input signal receiving user, and falls rotating speed module described in enabling or disabling according to this input signal.Driver's unrestricted choice can be made so whether to enable and to fall rotating speed module, improve the selection degrees of freedom of driver.
In another embodiment of the present invention, described engine electronic control unit be configured to when the clutch 505 of the automatic transmission of vehicle be in not completely jointing state, ignore acceleration pedal position signal.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the various improvement that method of the present invention is conceived and technological scheme is carried out; or directly apply to other occasion, all within protection scope of the present invention without improving.
Claims (10)
1., for the controlling method that the clutch of vehicular automatic transmission engages, comprising:
Rotating speed step (101) is fallen: before clutch starts transmitting torque, whether the rotating speed judging motor by engine electronic control unit is being suitable within the scope of the safe speed of rotation that clutch engages, and, when the rotating speed of described motor is higher than described safe speed of rotation scope, initiatively taked to fall rotational speed operation by described engine electronic control unit, the rotating speed of described motor is reduced within the scope of described safe speed of rotation;
Clutch engagement step (102): engage by transmission control unit controls described clutch;
Wherein, described clutch engagement step is performed when described transmission control unit does not judge that the rotating speed of described motor is whether within the scope of described safe speed of rotation.
2. controlling method according to claim 1, is characterized in that, described in fall rotating speed step and perform when described clutch separation completes.
3. controlling method according to claim 2, is characterized in that, described in fall signal when rotating speed step drops to zero in response to the clutch pressure of described clutch and perform.
4. controlling method according to claim 1, is characterized in that, described in fall rotating speed step and perform when described clutch starts to engage.
5. controlling method according to claim 4, is characterized in that, described in fall rotating speed step in response to lever from neutral gear be switched to travel shelves gear switch signal and perform.
6. controlling method according to claim 1, is characterized in that, described in fall rotational speed operation and comprise oil-break.
7. according to claim 1 ?controlling method according to any one of 6, it is characterized in that, when described clutch be in not completely jointing state, ignore acceleration pedal position signal.
8. according to claim 1 ?controlling method according to any one of 6, it is characterized in that, also comprise selection step: described in optionally performing according to the input signal of user, fall rotating speed step.
9., for the control gear that the clutch of vehicular automatic transmission engages, comprising:
Engine electronic control unit (506), it comprises and falls rotating speed module, describedly fall rotating speed that rotating speed module is configured to start to judge before transmitting torque motor at clutch (505) and whether be suitable within the scope of the safe speed of rotation that clutch engages, and, when the rotating speed of described motor is higher than described safe speed of rotation scope, initiatively taked to fall rotational speed operation by described engine electronic control unit, the rotating speed of described motor is reduced within the scope of described safe speed of rotation;
Transmission control unit (503), it is configured to control described clutch when not judging that the rotating speed of described motor is whether within the scope of described safe speed of rotation and starts to engage.
10. control gear according to claim 9, is characterized in that, also comprises selection unit, and it is configured to the input signal receiving user, and falls rotating speed module described in enabling or disabling according to this input signal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310375371.3A CN103498879B (en) | 2013-08-26 | 2013-08-26 | The controlling method that a kind of clutch for vehicular automatic transmission engages and device |
| CN201610223685.5A CN105757142B (en) | 2013-08-26 | 2013-08-26 | The control method and device that a kind of clutch for vehicle automatic speed variator engages |
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| CN201310375371.3A CN103498879B (en) | 2013-08-26 | 2013-08-26 | The controlling method that a kind of clutch for vehicular automatic transmission engages and device |
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| CN201610223685.5A Division CN105757142B (en) | 2013-08-26 | 2013-08-26 | The control method and device that a kind of clutch for vehicle automatic speed variator engages |
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| CN103498879A CN103498879A (en) | 2014-01-08 |
| CN103498879B true CN103498879B (en) | 2016-04-27 |
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| CN105259804B (en) | 2015-10-15 | 2018-01-19 | 浙江吉利汽车研究院有限公司 | The method for preventing TCU and ESP from producing interference |
| CN105889494A (en) * | 2016-05-25 | 2016-08-24 | 广西柳工机械股份有限公司 | Control method and control system of planetary gearbox |
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