CN105626847B - synchronizer control method and device - Google Patents
synchronizer control method and device Download PDFInfo
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- CN105626847B CN105626847B CN201410712928.2A CN201410712928A CN105626847B CN 105626847 B CN105626847 B CN 105626847B CN 201410712928 A CN201410712928 A CN 201410712928A CN 105626847 B CN105626847 B CN 105626847B
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Abstract
A kind of synchronizer control method and device, methods described include：Whole vehicle control signal is detected, the control stage residing for synchronizer is judged；In the control stage according to residing for the synchronizer, calculate corresponding shift fork adjustment amount；The translational speed and dynamics of shifting fork bar are adjusted according to the shift fork adjustment amount；According to the translational speed and dynamics after adjustment, the synchronizer is controlled to move using the shifting fork bar.By methods described and device, the ride comfort that synchronizer is moved in shift process can be improved.
Description
Technical field
The present invention relates to field of automobile, more particularly to a kind of synchronizer control method and device.
Background technology
Synchronizer control be automobile gearbox gearshift control in important controlling unit, be directed to shift process and move
The problems such as power break period, smooth gear shifting, gearshift noise and synchronizer wear and tear.Automatically controlling for conventional synchronizer is used more
Open loop type Stress control or flow control.Although such control is simple, the ride comfort of synchronizer gearshift can not be ensured.
Especially under some operating modes, such as acceleration change when, or environment temperature it is inconsistent when etc., it may appear that synchronizer excessive velocities produce
Raw impact, or speed compared with causing the problem of shift time is long slowly.
The content of the invention
The problem of embodiment of the present invention is solved is how to improve the ride comfort that synchronizer is moved in shift process.
To solve the above problems, the embodiment of the present invention provides a kind of synchronizer control method, including：Detect full-vehicle control letter
Number, judge the control stage residing for synchronizer；In the control stage according to residing for the synchronizer, calculate corresponding shift fork adjustment
Amount；The translational speed and dynamics of shifting fork bar are adjusted according to the shift fork adjustment amount；According to the translational speed and dynamics after adjustment, adopt
The synchronizer is controlled to move with the shifting fork bar.
Optionally, the whole vehicle control signal includes：Synchronizer position signalling, vehicle demand gear signal and vehicle are actual
Gear signal.
Optionally, the whole vehicle control signal also includes：Gearbox fuel injection pressure signal.
Optionally, the control stage according to residing for the synchronizer, corresponding shift fork adjustment amount is calculated, including：Inspection
Survey accelerator pedal signal and TOT Transmission Oil Temperature signal；According to the accelerator pedal signal and the TOT Transmission Oil Temperature signal, and
In the control stage residing for the synchronizer, calculate the corresponding shift fork adjustment amount.
Optionally, the shift fork adjustment amount includes the demand speed of shift fork executing agency in correspondence gear box hydraulic control system
Degree and demand pressure.
Optionally, it is described according to the demand speed and the translational speed and dynamics bag of demand pressure control shifting fork bar
Include：According to the demand pressure, the pressure valve of shift fork executing agency in gear box hydraulic system is adjusted；According to demand speed
Degree, adjusts the flow valve of shift fork executing agency in the gear box hydraulic system.
In order to solve above-mentioned technical problem, the embodiment of the invention also discloses a kind of synchronizer control device, including：Inspection
Unit is surveyed, for detecting whole vehicle control signal；Judging unit, for judging the control stage residing for synchronizer；Computing unit, is used
In the control stage according to residing for the synchronizer, corresponding shift fork adjustment amount is calculated；First adjustment unit, according to the shift fork
Adjustment amount adjusts the translational speed and dynamics of shifting fork bar；Second adjustment unit, according to the translational speed and dynamics after adjustment, is used
The shifting fork bar controls the synchronizer movement.
Optionally, the whole vehicle control signal includes：Synchronizer position signalling, vehicle demand gear signal and vehicle are actual
Gear signal.
Optionally, the whole vehicle control signal also includes：Gearbox fuel injection pressure signal.
Optionally, the computing unit includes：Detection sub-unit, for detecting accelerator pedal signal and TOT Transmission Oil Temperature letter
Number；Computation subunit, for according to the accelerator pedal signal and the TOT Transmission Oil Temperature signal, and residing for the synchronizer
The control stage, calculate the corresponding shift fork adjustment amount.
Optionally, the shift fork adjustment amount includes the demand speed of shift fork executing agency in correspondence gear box hydraulic control system
Degree and demand pressure.
Optionally, first adjustment unit includes：First adjustment subelement, according to the demand pressure, adjusts speed change
The pressure valve of shift fork executing agency in case hydraulic system；Second adjustment subelement, for according to the demand speed, adjustment to be described
The flow valve of shift fork executing agency in gear box hydraulic system.
Compared with prior art, the technical scheme of the embodiment of the present invention has advantages below：
The embodiment of the present invention adds feedback control mechanism during synchronizer control, is believed by monitoring full-vehicle control
Number, the location of current sync device is judged, so that the different control stages in synchronizer can be by adjusting shifting fork bar in real time
Movement, control synchronizer steadily quickly move, under the premise of the power demand of driver is met, optimize shift process power
Break period, synchronizer noise is reduced, reduce the abrasion of synchronizer hardware, improve shift quality.
Brief description of the drawings
Fig. 1 is a kind of flow chart of synchronizer control method in the embodiment of the present invention；
When Fig. 2 is that synchronizer is by being switched to 1 grade for 2 grades in the embodiment of the present invention, control stage and the relation of synchronizer position
Schematic diagram；
Fig. 3 is the structural representation of the hydraulic control system of shift fork executing agency in the embodiment of the present invention；
Fig. 4 is a kind of structural representation of synchronizer control device in the embodiment of the present invention.
Embodiment
Synchronizer control be automobile gearbox gearshift control in important controlling unit, be directed to shift process and move
The problems such as power break period, smooth gear shifting, gearshift noise and synchronizer wear and tear.Automatically controlling for conventional synchronizer is used more
Open loop type Stress control or flow control.Although such control is simple, the ride comfort of synchronizer gearshift can not be ensured.
Especially under some operating modes, such as acceleration change when, or environment temperature it is inconsistent when etc., it may appear that synchronizer excessive velocities produce
Raw impact, or speed compared with causing the problem of shift time is long slowly.
The embodiment of the present invention adds feedback control mechanism during synchronizer control, is believed by monitoring full-vehicle control
Number, the location of current sync device is judged, so that the different control stages in synchronizer can be by adjusting shifting fork bar in real time
Movement, control synchronizer steadily quickly move, under the premise of the power demand of driver is met, optimize shift process power
Break period, synchronizer noise is reduced, reduce the abrasion of synchronizer hardware, improve shift quality.
It is understandable to enable the above objects, features and advantages of the present invention to become apparent, below in conjunction with the accompanying drawings to the present invention
Specific embodiment be described in detail.
The embodiments of the invention provide a kind of synchronizer control method, reference picture 1 is carried out detailed below by way of specific steps
Explanation.
Step S101, detects whole vehicle control signal, judges the control stage residing for synchronizer.
The above-mentioned synchronizer control stage refers to synchronizer during conversion gear is performed, by residing actual physics
Position, and the control stage that gear change direction is determined.Specifically, the control stage can include：Synchronizer is plucked
Shelves, synchronizer are combined with reference to preceding idle stroke, synchronizer sliding wear, synchronizer combines rear idle stroke, synchronizer and filed and synchronizer
In six control stages such as shelves.
In specific implementation, it can be adopted by gear box control unit (Transmission Control Unit, TCU)
Collect the whole vehicle control signal, so as to judge the control stage residing for synchronizer.
In specific implementation, the whole vehicle control signal can include：Synchronizer position signalling, vehicle demand gear signal
With vehicle actual-gear signal.The actual physics position residing for the synchronizer can be obtained by the synchronizer position signalling
Put, and by relatively the vehicle demand gear signal and the vehicle actual-gear signal, the synchronizer can be obtained
Gear change direction.Therefore the synchronizer position signalling, vehicle demand gear signal and vehicle actual-gear signal are integrated, can
To judge the control stage residing for synchronizer.
In above-mentioned specific implementation, the whole vehicle control signal can also include：Gearbox fuel injection pressure signal.By obtaining
The gearbox fuel injection pressure signal, and the synchronous control phase with reference to residing for synchronizer, it can be found that the synchronous control of the synchronizer
It whether there is failure in system.
Step S102, in the control stage according to residing for the synchronizer, calculates corresponding shift fork adjustment amount.
In specific implementation, the shift fork adjustment amount includes shift fork executing agency in correspondence gear box hydraulic control system
Demand speed and demand pressure.The demand speed corresponds in gear box hydraulic control system, the flow of shift fork executing agency
The controlled quentity controlled variable of valve；The demand pressure corresponds in gear box hydraulic control system, the control of the pressure valve of shift fork executing agency
Amount.
As shown in Fig. 2 below be switched to by 2 grades 1 grade of shift process illustrate the control stage and demand speed and
Corresponding relation between demand pressure.
(1) the t1-t2 periods：When synchronizer carries out gear switch, 2 can be put to neutral gear position from gear first, that is, entered
Enter synchronizer and pluck the gear control stage.Because this stage is not related to the collision and moment of torsion transmission of hardware, therefore changed to reduce
The break period is kept off, as fast as possible synchronizer can be departed from and put 2 in gear, i.e., by the request of flow valve in shift fork executing agency
The request pressure of speed and pressure valve is set to default maximum, carries out speed control；
(2) the t2-t3 periods：, it is necessary to reduce synchronizer translational speed after synchronizer arrival neutral gear position, therefore now by root
The request speed of flow valve in shift fork executing agency and the request pressure of pressure valve are implemented to adjust according to synchronizer physical location, if
For default minimum value, passively controlled；
(3) the t3-t4 periods：Synchronizer 1 process from neutral to sync bit combines preceding idle stroke, it is necessary to will for synchronizer
Synchronizer is set to more slow speed to avoid causing synchronous impact, therefore the request of flow valve in shift fork executing agency is fast
Degree and the request pressure of pressure valve are set to the smaller value big relative to the shift fork adjustment amount minimum value, carry out speed control；
(4) the t4-t5 periods：Synchronizer is combined from sync bit 1 to the process of sync bit 2 for synchronizer sliding wear, in order to
Avoid causing synchronous impact when synchronizer sliding wear is combined, it is necessary to set less demand pressure in shift fork executing agency.Tool
For body, the request speed of flow valve can be set to default normal operating value, and by functional relation by pressure valve please
Pressure is asked to be set to the respective value related to synchronizer position；When synchronizer positional distance neutral gear position is smaller, i.e., synchronous sliding wear
Before beginning, demand pressure is set to default smaller value；And when synchronizer positional distance neutral gear position is larger, i.e., it is synchronous
Sliding wear combine after the completion of, demand pressure is set to default higher value, during pressure be stepped up, carry out Stress control；
(5) the t5-t6 periods：Synchronizer combines rear idle stroke from sync bit 2 to putting 1 process in gear for synchronizer,
Faster speed is now needed to reduce shift time, but speed can not soon be caused very much to synchronizer and 1 rigidity is put in gear
Collision.Specifically, the demand pressure of pressure valve can be set to smaller, and by functional relation by the demand speed of flow valve
The respective value related to synchronizer position is set to, i.e., when synchronizer positional distance neutral gear position is smaller, demand speed is set to
Comparatively fast, synchronizer apart from neutral gear position it is larger when, demand speed is set to relatively slow, carries out speed control；
(6) when synchronizer, which is reached, puts 1 in gear, filed the control stage into synchronizer.In order to allow combined cover and combination
Gear ring can be at a fully engaged, is realized and is compressed in gear by Stress control；
(7) after synchronizer, which is reached, puts 1 in gear, and complete synchronizer and file after the control stage, into synchronizer in shelves
The control stage.Now need to stablize synchronizer position, according to synchronizer real time position and the difference in shelves target location, to pressure
The request pressure of valve and the request speed of flow valve are implemented to adjust, and are set to default minimum value, are passively controlled.
In specific implementation, the step S102 can also include：Accelerator pedal signal and TOT Transmission Oil Temperature signal are detected,
And according to the accelerator pedal signal and the TOT Transmission Oil Temperature signal, and the control stage residing for the synchronizer, calculate
Corresponding shift fork adjustment amount, that is, calculate the corresponding demand speed and the demand pressure.
The acceleration change situation of vehicle can be obtained by detecting the accelerator pedal signal, and detect the TOT Transmission Oil Temperature
Signal can then obtain the environment temperature in transmission system.In the prior art, when there is acceleration change, or environment
When temperature is inconsistent, the ride comfort of synchronizer Synchronization Control may be all influenceed.According to the accelerator pedal signal and the change
Fast case oil temperature signal situation of change, further can set suitable adjusted value for the shift fork adjustment amount, improve gearshift behaviour
The ride comfort of work.In a particular application, the adjusted value can be configured by experiment according to experimental simulation result.
Step S103, the translational speed and dynamics of shifting fork bar are adjusted according to the shift fork adjustment amount.
In specific implementation, the shift fork adjustment amount can include demand pressure and demand speed.Therefore, according to calculating
The demand pressure and demand speed, according to the demand pressure, correspondingly adjust shift fork in gear box hydraulic system and perform
The pressure valve of mechanism；And according to the demand speed, adjust the flow of shift fork executing agency in the gear box hydraulic system
Valve.
As shown in figure 3, flow valve 31 is used for the translational speed for adjusting shifting fork bar 33 in hydraulic cylinder 32, and can be according to shift fork
The position feedback of bar 33 carries out closed loop regulation, and pressure valve 34 is used for the hydraulic pressure for adjusting and maintaining whole oil circuit, can quickly rung
Pressure request is answered, pressure is set up according to the pressure request and pressure is removed, oil pump 35 is used to provide working connection oil pressure.
In above-mentioned specific implementation, for the demand volume of required output calculated and the demand pressure
Power, can be by flow valve and the characteristic of pressure valve, by calling default function or formula to carry out computing, by the flow of requirement
Amount and the demand pressure are converted to corresponding current signal, and flow valve and pressure valve in shift fork executing agency are controlled respectively.
Step S104, according to the translational speed and dynamics after adjustment, controls the synchronizer to move using the shifting fork bar.
In the prior art, synchronizer control simply gives synchronizer mechanisms control instruction by special controller, makes same
Walk device and perform corresponding gear shift operation, but the feedback control not being arranged in synchronizer control process, therefore have impact on same
Walk the smooth shift of device.And under specific operation, this influence can be even more serious.The embodiment of the present invention is by detecting synchronizer institute
In the control stage at place, calculate in current control stage, the suitable shift fork adjustment amount that shift fork actuator needs, and make shift fork pole-footing
According to the translational speed after adjustment and dynamics control synchronizer movement, it is ensured that the ride comfort that synchronizer is moved in shift process.
The embodiment of the invention also discloses a kind of synchronizer control device.As shown in figure 4, the synchronizer control device 40
It can include：Detection unit 41, for detecting whole vehicle control signal；Judging unit 42, for judging the control residing for synchronizer
Stage；Computing unit 43, for the control stage according to residing for the synchronizer, calculates corresponding shift fork adjustment amount；First adjusts
Whole unit 44, the translational speed and dynamics of shifting fork bar are adjusted according to the shift fork adjustment amount；Second adjustment unit 45, according to adjustment
Translational speed and dynamics afterwards, control the synchronizer to move using the shifting fork bar.
In specific implementation, the whole vehicle control signal can include：Synchronizer position signalling, vehicle demand gear signal
With vehicle actual-gear signal.
In specific implementation, the whole vehicle control signal can also include：Gearbox fuel injection pressure signal.
In specific implementation, the computing unit 43 can include：Detection sub-unit, for detect accelerator pedal signal and
TOT Transmission Oil Temperature signal；Computation subunit, for according to the accelerator pedal signal and the TOT Transmission Oil Temperature signal, Yi Jisuo
The control stage residing for synchronizer is stated, the corresponding shift fork adjustment amount is calculated.
In specific implementation, the shift fork adjustment amount includes shift fork executing agency in correspondence gear box hydraulic control system
Demand speed and demand pressure.
In specific implementation, first adjustment unit 44 can include：First adjustment subelement, according to the demand pressure
The pressure valve of shift fork executing agency in power, adjustment gear box hydraulic system；Second adjustment subelement, for according to demand speed
Degree, adjusts the flow valve of shift fork executing agency in the gear box hydraulic system.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is can
To instruct the hardware of correlation to complete by program, the program can be stored in computer-readable recording medium, and storage is situated between
Matter can include：ROM, RAM, disk or CD etc..
Although present disclosure is as above, the present invention is not limited to this.Any those skilled in the art, are not departing from this
In the spirit and scope of invention, it can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
The scope of restriction is defined.
Claims (12)
1. a kind of synchronizer control method, including detection whole vehicle control signal, judge the control stage residing for synchronizer；Its feature
It is, in addition to：
In the control stage according to residing for the synchronizer, calculate corresponding shift fork adjustment amount；
The translational speed and dynamics of shifting fork bar are adjusted according to the shift fork adjustment amount；
According to the translational speed and dynamics after adjustment, the synchronizer is controlled to move using the shifting fork bar.
2. synchronizer control method as claimed in claim 1, it is characterised in that the whole vehicle control signal includes：Synchronizer
Position signalling, vehicle demand gear signal and vehicle actual-gear signal.
3. synchronizer control method as claimed in claim 2, it is characterised in that the whole vehicle control signal also includes：Speed change
Case fuel injection pressure signal.
4. synchronizer control method as claimed in claim 1, it is characterised in that the control according to residing for the synchronizer
In the stage, corresponding shift fork adjustment amount is calculated, including：
Detect accelerator pedal signal and TOT Transmission Oil Temperature signal；
According to the accelerator pedal signal and the TOT Transmission Oil Temperature signal, and the control stage residing for the synchronizer, meter
Calculate the corresponding shift fork adjustment amount.
5. the synchronizer control method as described in claim 1 or 4, it is characterised in that the shift fork adjustment amount is included to strain
The demand speed and demand pressure of shift fork executing agency in fast case hydraulic control system.
6. synchronizer control method as claimed in claim 5, it is characterised in that described according to the demand speed and the need
The translational speed and dynamics for seeking Stress control shifting fork bar include：
According to the demand pressure, the pressure valve of shift fork executing agency in gear box hydraulic system is adjusted；
According to the demand speed, the flow valve of shift fork executing agency in the gear box hydraulic system is adjusted.
7. a kind of synchronizer control device, including detection unit, for detecting whole vehicle control signal；Judging unit, for judging
The control stage residing for synchronizer；Characterized in that, also including：
Computing unit, for the control stage according to residing for the synchronizer, calculates corresponding shift fork adjustment amount；
First adjustment unit, the translational speed and dynamics of shifting fork bar are adjusted according to the shift fork adjustment amount；
Second adjustment unit, according to the translational speed and dynamics after adjustment, controls the synchronizer to move using the shifting fork bar.
8. synchronizer control device as claimed in claim 7, it is characterised in that the whole vehicle control signal includes：Synchronizer
Position signalling, vehicle demand gear signal and vehicle actual-gear signal.
9. synchronizer control device as claimed in claim 8, it is characterised in that the whole vehicle control signal also includes：Speed change
Case fuel injection pressure signal.
10. synchronizer control device as claimed in claim 7, it is characterised in that the computing unit includes：
Detection sub-unit, for detecting accelerator pedal signal and TOT Transmission Oil Temperature signal；
Computation subunit, for according to the accelerator pedal signal and the TOT Transmission Oil Temperature signal, and synchronizer institute
In the control stage at place, calculate the corresponding shift fork adjustment amount.
11. the synchronizer control device as described in claim 7 or 10, it is characterised in that the shift fork adjustment amount includes correspondence
The demand speed and demand pressure of shift fork executing agency in gear box hydraulic control system.
12. synchronizer control device as claimed in claim 11, it is characterised in that first adjustment unit includes：
First adjustment subelement, according to the demand pressure, adjusts the pressure valve of shift fork executing agency in gear box hydraulic system；
Second adjustment subelement, for according to the demand speed, adjusting shift fork executing agency in the gear box hydraulic system
Flow valve.
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| CN201410712928.2A CN105626847B (en) | 2014-11-28 | 2014-11-28 | synchronizer control method and device |
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| CN201410712928.2A CN105626847B (en) | 2014-11-28 | 2014-11-28 | synchronizer control method and device |
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| CN105626847B true CN105626847B (en) | 2017-08-01 |
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| CN108150639A (en) * | 2016-12-02 | 2018-06-12 | 上海汽车集团股份有限公司 | Synchronisation control means and device, the automobile of synchronizer |
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| CN110925420B (en) * | 2019-12-10 | 2021-03-16 | 义乌吉利自动变速器有限公司 | Transmission gear selecting and shifting control method and system and vehicle |
| CN110939731B (en) * | 2019-12-30 | 2021-03-16 | 潍柴动力股份有限公司 | Method and device for adjusting gear engaging distance |
| CN111237445B (en) * | 2020-01-10 | 2021-12-07 | 一汽解放汽车有限公司 | Synchronizer gear shifting pneumatic control method based on PWM valve |
| CN111306293B (en) * | 2020-02-27 | 2021-08-10 | 一汽解放汽车有限公司 | Synchronizer gear shifting pneumatic control method based on switch valve |
| CN113915330A (en) * | 2021-09-28 | 2022-01-11 | 常州华创航空科技有限公司 | Gear shifting device and transmission case |
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