CN102221084B - Control system and method for synchronization control in dual clutch transmissions - Google Patents
Control system and method for synchronization control in dual clutch transmissions Download PDFInfo
- Publication number
- CN102221084B CN102221084B CN201010530634.XA CN201010530634A CN102221084B CN 102221084 B CN102221084 B CN 102221084B CN 201010530634 A CN201010530634 A CN 201010530634A CN 102221084 B CN102221084 B CN 102221084B
- Authority
- CN
- China
- Prior art keywords
- slippage
- acceleration
- slippage acceleration
- double
- synchronization control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Control Of Transmission Device (AREA)
Abstract
The invention relates to a control system and a method for synchronization control in dual clutch transmission. The control system includes a pressure control solenoid and a flow control solenoid having an input in fluid communication with the pressure control solenoid. A piston adjusts a position of a shift fork and includes a first area in fluid communication with the pressure control solenoid and a second area in fluid communication with the flow control solenoid. A fork sensor senses a position of a shift fork. A slip sensing module estimates slip acceleration between an input shaft and a gear. A flow determining module generates a flow command for the flow control solenoid. A sync control module determines a slip acceleration profile including an estimated slip acceleration, adjusts the estimated slip acceleration based on the measured slip acceleration, and generates a pressure command for the pressure control solenoid based on the adjusted slip acceleration.
Description
the cross reference of related application
This application claims the U.S. Provisional Application No.61/324 enjoying and submitting on April 15th, 2010, the preference of 515, the full content of this provisional application at this by reference to being incorporated to herein.
This application and the U.S. Patent application No.12/850159 (acting on behalf of case No.P012033) submitted in same date are relevant with the U.S. Patent application No.12/850083 (acting on behalf of case No.P011818) submitted in same date.The full content of above-mentioned application at this by reference to being incorporated to herein.
Technical field
The present invention relates to double-clutch speed changer, and the control system related more specifically to for the synchronization control in double-clutch speed changer and method.
Background technique
In the object that this background note provided is to introduce background of the present invention generally.In the work of current signed inventor (in the degree that background technique part describes) and this description otherwise each side be not enough to as prior art when applying for, be both insignificantly also non-ly impliedly recognized as the prior art inconsistent with the present invention.
When driver wants to become another gear from a gear from the automobile with manual transmission, driver's let slip the clutch.Clutch disconnects motor and interrupts kinetic current.Then, driver uses gear-change hand lever to select another gear.Gear-change hand lever is connected to reverse shift fork by mechanical connection component.Reverse shift fork is attached to gear selector, and described gear selector is cancelled a gear and selected another gear.
Gear selector can comprise synchronizer, the speed of gear selector to be mated with gear, to prevent wearing and tearing.Once engage new gear, driver's release the clutch pedal is with connecting engine again and by power transmission to wheel.
From being understandable that above, manual transmission does not provide the continuous kinetic current from motor to wheel.On the contrary, power transmission becomes disconnection (when clutch separation) from connection and becomes connection (when clutch engages and speed changer is in gear) from disconnection.Be understandable that, the performance of luminous efficiency loss and reduction during the period when manual transmission is separated.In addition, the on/off character of the power transmission provided by manual transmission may be tedious.
Double-clutch speed changer (DCT) uses two clutches, but does not comprise clutch pedal.Clutch may be used for control first gear subgroup (such as, a grade, third gear and five grades), and another clutch may be used for controlling second gear seat group (such as, second gear, fourth gear and six grades).Use this setting, different gears can be selected in advance before gear shift, interrupt to prevent the kinetic current from motor to speed changer.Thus, efficiency and performance is improved.
Power train control module and hybrid power control system can be used for the operation of solenoidoperated cluthes, reverse shift fork and gear selector.Between the synchronous of gear selector and joint or separation period, be difficult to control reverse shift fork.Thus, during gear shift, some DCT can produce loud noise noise.In addition, a large amount of time may be needed and make great efforts to demarcate power train control module and hybrid power control system, to carry out gear shift by acceptable shift quality and speed.
Summary of the invention
A kind of control system, comprising: electromagnetic pressure control valve and flow control electromagnetic valve, described flow control electromagnetic valve has the input be communicated with described electromagnetic pressure control valve fluid.Piston regulates the position of reverse shift fork, and comprises the second area that the first surface sum that is communicated with described electromagnetic pressure control valve fluid is communicated with described flow control electromagnetic valve fluid.The position of shift fork sensor sensing reverse shift fork.Slippage sensing module estimates the slippage acceleration between input shaft and gear.Flow determination module produces the flow instruction being used for described flow control electromagnetic valve.Synchronization control module is determined to comprise the slippage acceleration diagram estimating slippage acceleration, regulates and estimates slippage acceleration, and produce the pressure instruction for described electromagnetic pressure control valve based on adjustment slippage acceleration based on measurement slippage acceleration.
In further feature, described synchronization control module comprises slippage acceleration module, and described slippage acceleration module produces slippage acceleration diagram based on initial slippage acceleration and predetermined lock in time.Described synchronization control module also comprises error module, and described error module produces slippage acceleration error based on estimation slippage acceleration and measurement slippage acceleration.Described synchronization control module also comprises summation module, and described summation module produces based on estimation slippage acceleration and slippage acceleration error and regulates slippage acceleration.Described synchronization control module also comprises force transducer module, and described force transducer module produces power instruction based on adjustment slippage acceleration.
In further feature, described synchronization control module also comprises pressure converter module, and described pressure converter module produces pressure instruction based on power instruction.The Part III that described slippage acceleration diagram comprises the first portion tiltedly fading to maximum value, the constant second portion in maximum value and tiltedly becomes towards zero with first rate.Second area is greater than the first area.Described reverse shift fork moves to sync bit from neutral position.Described flow instruction is the constant flow rate instruction between sync period.
In other feature, said system and method are implemented by computer program, and described computer program is performed by one or more processor.Described computer program can be on a tangible computer-readable medium resident, such as but not limited to storage, nonvolatile data storage and/or other suitable tangible media.
The present invention relates to following technical proposals.
1. a control system, comprising:
Electromagnetic pressure control valve;
Flow control electromagnetic valve, described flow control electromagnetic valve has the input be communicated with described electromagnetic pressure control valve fluid;
Piston, described piston regulates the position of reverse shift fork, and comprises the second area that the first surface sum that is communicated with described electromagnetic pressure control valve fluid is communicated with described flow control electromagnetic valve fluid;
Estimate the slippage sensing module of slippage acceleration;
Flow determination module, described flow determination module produces the flow instruction being used for described flow control electromagnetic valve; With
Synchronization control module, described synchronization control module is determined to comprise the slippage acceleration diagram estimating slippage acceleration, regulate based on measurement slippage acceleration and estimate slippage acceleration, and produce the pressure instruction for described electromagnetic pressure control valve based on adjustment slippage acceleration.
2. the control system according to scheme 1, wherein, described synchronization control module comprises slippage acceleration module, and described slippage acceleration module produces slippage acceleration diagram based on initial slippage acceleration and predetermined lock in time.
3. the control system according to scheme 2, wherein, described synchronization control module also comprises error module, and described error module produces slippage acceleration error based on estimation slippage acceleration and measurement slippage acceleration.
4. the control system according to scheme 3, wherein, described synchronization control module also comprises summation module, and described summation module produces based on estimation slippage acceleration and slippage acceleration error and regulates slippage acceleration.
5. the control system according to scheme 4, wherein, described synchronization control module also comprises force transducer module, and described force transducer module produces power instruction based on adjustment slippage acceleration.
6. the control system according to scheme 5, wherein, described synchronization control module also comprises pressure converter module, and described pressure converter module produces pressure instruction based on power instruction.
7. the control system according to scheme 1, wherein, the Part III that described slippage acceleration diagram comprises the first portion tiltedly fading to maximum value, the constant second portion in maximum value and tiltedly becomes towards zero with first rate.
8. the control system according to scheme 1, wherein, second area is greater than the first area.
9. the control system according to scheme 1, wherein, described reverse shift fork moves to sync bit from neutral position.
10. the control system according to scheme 1, wherein, described flow instruction is the constant flow rate instruction between sync period.
11. 1 kinds of methods, comprising:
The second area that the first surface sum using piston to regulate the position of reverse shift fork, described piston to comprise to be communicated with electromagnetic pressure control valve fluid is communicated with flow control electromagnetic valve fluid;
Measure slippage acceleration;
Produce the flow instruction being used for described flow control electromagnetic valve; With
Determine to comprise the slippage acceleration diagram estimating slippage acceleration;
Regulate based on measurement slippage acceleration and estimate slippage acceleration; With
The pressure instruction for described electromagnetic pressure control valve is produced based on adjustment slippage acceleration.
12. methods according to scheme 11, also comprise: produce slippage acceleration diagram based on initial slippage acceleration and predetermined lock in time.
13. methods according to scheme 12, also comprise: based on estimation slippage acceleration with measure slippage acceleration and produce slippage acceleration error.
14. methods according to scheme 13, also comprise: produce power instruction based on adjustment slippage acceleration.
15. methods according to scheme 14, also comprise: produce pressure instruction based on power instruction.
16. methods according to scheme 11, wherein, the Part III that described slippage acceleration diagram comprises the first portion tiltedly fading to maximum value, the constant second portion in maximum value and tiltedly becomes towards zero with first rate.
17. methods according to scheme 11, wherein, second area is greater than the first area.
18. methods according to scheme 11, also comprise: described reverse shift fork is moved to sync bit from neutral position.
19. methods according to scheme 11, wherein, described flow instruction is constant between sync period.
Further application of the present invention is apparent from detailed description provided below.Should be understood that, the detailed description and specific examples be only intended to for illustration of object and be not intended to limit the scope of the invention.
Accompanying drawing explanation
From detailed description and accompanying drawing invention will be more fully understood, in the accompanying drawings:
Fig. 1 and 2 is the functional block diagram of the control system for double-clutch speed changer;
Fig. 3 is the functional block diagram according to synchronization module of the present invention;
Fig. 4 illustrates the flow chart according to the method for synchronized shifting shift fork of the present invention;
Fig. 5 shows synchronizer slippage between sync period and absolute slippage acceleration diagram; And
Fig. 6 shows synchronizer slippage, definitely slippage acceleration diagram, actual acceleration curve and pressure instruction.
Embodiment
Following illustrative in nature is only exemplary and be never intended to limit the present invention, it application or use.For the sake of clarity, the element that identical designated is similar is used in the accompanying drawings.As used in this, at least one of phrase A, B and C should be understood to mean a kind of logic (A or B or C) using non-exclusive logical "or".Should be understood that, the step in method can perform with different order and not change principle of the present invention.
As used in this, term module refers to the processor (shared, special or group) of specific integrated circuit (ASIC), electronic circuit, the one or more software of execution or firmware program and storage, combinational logic circuit and/or provides other suitable parts of described function.
The present invention relates to control system and the method for the shift fork actuator between sync period in control DCT.In some embodiments, shift fork actuator comprises double-faced piston.Flow control (FC) solenoid valve can be connected to the side of piston, and Stress control (PC) solenoid valve can be connected to the opposite side of piston.PC solenoid valve can supply FC solenoid valve.
Between sync period, by FC solenoid valve being set as steady state value and using PC solenoid valve to change the pressure instruction of piston, control shift fork actuator to the power of piston.Between sync period, calculate axle acceleration curve, with during scheduled time slot by the slip velocity of synchronizer from synchronous event time horizontal vanishing.The power of order becomes according to the axle acceleration of order and synchronizer characteristic.The present invention allows to make great efforts steadily to control the synchronous event in DCT within the time of prearranging quatity with minimum demarcation.
During synchronous event, flow control electromagnetic valve is set as constant level, and electromagnetic pressure control valve is used for applying force to synchronizer.Described power makes the slippage between input shaft and gear be reduced to zero.The measuring speed of the axle that synchronizer slippage rotates thereon according to the measurement output speed of speed changer, synchronizer and velocity ratio between the two and become.
When synchronizer slippage is reduced to zero, synchronous event completes.Synchronous in order to complete, order slippage acceleration diagram, described slippage acceleration diagram becomes according to the slippage when event starts and the nominal time completing event.The shape of this curve by from event time slippage change speed to maximum acceleration oblique change and at the end of oblique change from maximum acceleration to zero determine.These tiltedly become is demarcated as total percentage demarcating lock in time.
Then, axle acceleration instruction transformation is power instruction, and power instruction becomes according to the inertia of reflection and synchronizer capacity.Then power instruction is sent to electromagnetic pressure control valve as pressure instruction.Pressure instruction equals the area of power divided by the piston of effect.Closed-loop policy is used for guaranteeing that actual axle acceleration follows instruction curve.Closed loop control uses the variance ratio of synchronizer slippage as feedback, and makes correction based on the difference between instruction curve and actual acceleration.
In some embodiments, the both sides of shift fork actuator piston have different areas.FC solenoid valve can be connected to the larger area in both sides.PC solenoid valve can be connected to the comparatively small size in both sides.PC solenoid valve also supply pressure to the FC solenoid valve of opposite side being attached to shift fork actuator piston.
With reference now to Fig. 1 and 2, show the Exemplary control system 10 for DCT.Fluid is pumped across filter 16 by pump 14.Bypass 18 can be set around filter 16.The output of filter 16 is supplied to hydraulic accumulator 20.Check ball 19 can be arranged between filter 16 and hydraulic accumulator 20.The output of hydraulic accumulator 20 passed through radiator 22 before supply Stress control (PC) solenoid valve 28-1,28-2,28-3 and 28-4 (total is called PC solenoid valve 28).
The output supply flow of PC solenoid valve 28-1 controls (FC) solenoid valve 30-1.The output supply clutch 34-1 of FC solenoid valve 30-1.Clutch position sensor (CPS) 36-1 senses the position of clutch 34-1.In some embodiments, clutch 34-1 can be relevant to the odd number shelves of DCT.
The output supply FC solenoid valve 30-2 of PC solenoid valve 28-2.The output supply clutch 34-2 of FC solenoid valve 30-2.CPS 36-2 senses the position of clutch 34-2.In some embodiments, clutch 34-2 can be relevant to the even number shelves of DCT.
The output of PC solenoid valve 28-3 supplies the first logical valve 50-1.The output of PC solenoid valve 28-3 also supplies FC solenoid valve 30-3.The output of FC solenoid valve 30-3 supplies the first logical valve 50-1.The output of logical valve 50-1 supplies the first shift fork actuator 52-1 and the second shift fork actuator 52-2 respectively.First shift fork actuator 52-1 and the second shift fork actuator 52-2 comprises first piston 54-1 and the second piston 54-2 respectively.First reverse shift fork 56-1 and the second reverse shift fork 56-2 is connected respectively to the end of first piston 54-1 and the second piston 54-2.First shift fork position transducer 58-1 and the second shift fork position transducer 58-2 senses the position of reverse shift fork 56-1 and 56-2 respectively.
The output of PC solenoid valve 28-4 supplies the second logical valve 50-2.The output of PC solenoid valve 28-4 also supplies FC solenoid valve 30-4.The output of FC solenoid valve 30-4 supplies the second logical valve 50-2.The output of the second logical valve 50-2 supplies the 3rd shift fork actuator 52-3 and the 4th shift fork actuator 52-4 respectively.3rd shift fork actuator 52-3 and the 4th shift fork actuator 52-4 comprises the 3rd piston 54-3 and the 4th piston 54-4 respectively.3rd reverse shift fork 56-3 and the 4th reverse shift fork 56-4 is connected respectively to the end of the 3rd piston 54-3 and the 4th piston 54-4.3rd shift fork position transducer 58-3 and the 4th shift fork position transducer 58-4 senses the position of reverse shift fork 56-3 and 56-4 respectively.
Each check ball 60-1,60-2 and 60-3 can as shown in the figure for supplying in the oil hydraulic circuit of clutch 34-1 and 34-2.Second logical valve solenoid valve 62 receives fluid from check ball 60-1, and supplies fluid to the second logical valve 50-2 and via in the second logical valve 50-2 to the first logical valve 50-1.Such as, reverse shift fork 56-1 to move around gear selector 70 along axle 76 between gear 72 and 74.
In fig. 2, control module 80 communicates with pressure transducer 24 with 30-4, clutch position sensor 36-1 with 36-2, the first and second logical valve 50-1 with 50-2, the second logical valve solenoid valve 62 with 28-4, FC solenoid valve 30-1,30-2,30-3 with 58-4, PC solenoid valve 28-1,28-2,28-3 with shift fork position transducer 58-1,58-2,58-3.The position of control module 80 solenoidoperated cluthes and reverse shift fork, as further discussed below, to realize the gear shift of DCT.Additional input can comprise the shaft speed sensor 94 of the speed of one or more axles that speed changer output speed sensor (TOSS) 92 is positioned at sensing gear selector.
With reference now to Fig. 3, show according to exemplary synchronization module 100 of the present invention.Synchronization module 100 can be implemented in control module 80 in fig. 2 or other control module any relevant with vehicle.Synchronization module 100 comprises synchronizer slippage acceleration module 110, and synchronizer slippage acceleration module 110 produces instruction slippage acceleration based on initial synchronizer slippage and predetermined lock in time.
Error module 114 receives actual slip acceleration and the instruction of slippage acceleration, and produces slippage acceleration error.The instruction of slippage acceleration and slippage acceleration error export to summation module 118.Summation module 118 produces the difference between the instruction of slippage acceleration and slippage acceleration error.Adjustment slippage acceleration is exported to force transducer module 122 by summation module, and adjustment slippage acceleration is converted to power by force transducer module 122.Power is converted to the pressure instruction of PC solenoid valve by pressure converter module 124.
Shift fork acceleration module 128 produces shift fork speed based on shift fork position.Synchronously complete module 132 and determine synchronously when complete based at least one in shift fork position, shift fork speed and actual slip acceleration.When having that synchronously to complete in condition one or more, the synchronous permission signal to pressure converter module 124 becomes low or synchronization module of otherwise stopping using.
With reference now to Fig. 4, show according to the method 150 for synchronized shifting shift fork of the present invention.154, determine initial synchronizer slippage and synchronous period.158, produce the instruction of synchronizer acceleration.162, determine slippage acceleration error.164, regulate the instruction of slippage acceleration based on slippage acceleration error.168, carry out calculating pressure instruction based on the instruction of adjustment slippage acceleration.172, controlling method determines synchronously whether complete.If not, controlling method returns step 158.Otherwise controlling method terminates.
With reference now to Fig. 5, show the synchronizer slippage 200 between sync period and absolute slippage acceleration diagram 204.Oblique variable Rate 226 provides the smooth transition 222 of slip velocity.The time reached needed for maximum slippage acceleration is shown with 208.The percentage of the cumulative time being reduced to final slippage acceleration is shown with 214.Cumulative time needed for synchronous event has been shown with 218.
With reference now to Fig. 6, show the synchronizer slippage 200 between sync period and absolute slippage acceleration diagram 204.Show actual absolute acceleration curve 240.Pressure instruction 250 based on feedback regulation to make slippage acceleration steady.
Extensive teaching of the present invention can be implemented in a variety of forms.Therefore, although the present invention includes specific example, due to when studying accompanying drawing, specification and appended claims, other amendments are apparent for technician, so true scope of the present invention should so not limit.
Claims (19)
1., for a control system for the synchronization control in double-clutch speed changer, comprising:
Electromagnetic pressure control valve;
Flow control electromagnetic valve, described flow control electromagnetic valve has the input be communicated with described electromagnetic pressure control valve fluid;
Piston, described piston regulates the position of the reverse shift fork of double-clutch speed changer, and comprises the second area that the first surface sum that is communicated with described electromagnetic pressure control valve fluid is communicated with described flow control electromagnetic valve fluid;
Estimate the slippage sensing module of slippage acceleration;
Flow determination module, described flow determination module produces the flow instruction being used for described flow control electromagnetic valve; With
Synchronization control module, described synchronization control module is determined to comprise the slippage acceleration diagram estimating slippage acceleration, regulate based on measurement slippage acceleration and estimate that slippage acceleration regulates slippage acceleration to produce, and produce the pressure instruction for described electromagnetic pressure control valve based on adjustment slippage acceleration.
2. the control system for the synchronization control in double-clutch speed changer according to claim 1, wherein, described synchronization control module comprises slippage acceleration module, and described slippage acceleration module produces slippage acceleration diagram based on initial slippage acceleration and predetermined lock in time.
3. the control system for the synchronization control in double-clutch speed changer according to claim 2, wherein, described synchronization control module also comprises error module, and described error module produces slippage acceleration error based on estimation slippage acceleration and measurement slippage acceleration.
4. the control system for the synchronization control in double-clutch speed changer according to claim 3, wherein, described synchronization control module also comprises summation module, and described summation module produces based on estimation slippage acceleration and slippage acceleration error and regulates slippage acceleration.
5. the control system for the synchronization control in double-clutch speed changer according to claim 4, wherein, described synchronization control module also comprises force transducer module, and described force transducer module produces power instruction based on adjustment slippage acceleration.
6. the control system for the synchronization control in double-clutch speed changer according to claim 5, wherein, described synchronization control module also comprises pressure converter module, and described pressure converter module produces pressure instruction based on power instruction.
7. the control system for the synchronization control in double-clutch speed changer according to claim 1, wherein, the described slippage acceleration diagram Part III that comprises the first portion tiltedly fading to maximum value, the constant second portion in maximum value and tiltedly become towards zero with first rate.
8. the control system for the synchronization control in double-clutch speed changer according to claim 1, wherein, second area is greater than the first area.
9. the control system for the synchronization control in double-clutch speed changer according to claim 1, wherein, described reverse shift fork moves to sync bit from neutral position.
10. the control system for the synchronization control in double-clutch speed changer according to claim 1, wherein, described flow instruction is the constant flow rate instruction between sync period.
11. 1 kinds, for the controlling method of the synchronization control in double-clutch speed changer, comprising:
The second area that the first surface sum using piston to regulate the position of the reverse shift fork of double-clutch speed changer, described piston to comprise to be communicated with electromagnetic pressure control valve fluid is communicated with flow control electromagnetic valve fluid;
Measure slippage acceleration;
Produce the flow instruction being used for described flow control electromagnetic valve; With
Determine to comprise the slippage acceleration diagram estimating slippage acceleration;
Regulate based on measurement slippage acceleration and estimate that slippage acceleration regulates slippage acceleration to produce; With
The pressure instruction for described electromagnetic pressure control valve is produced based on adjustment slippage acceleration.
12. controlling methods for the synchronization control in double-clutch speed changer according to claim 11, also comprise: produce slippage acceleration diagram based on initial slippage acceleration and predetermined lock in time.
13. controlling methods for the synchronization control in double-clutch speed changer according to claim 12, also comprise: produce slippage acceleration error based on estimation slippage acceleration and measurement slippage acceleration.
14. controlling methods for the synchronization control in double-clutch speed changer according to claim 13, also comprise: produce power instruction based on adjustment slippage acceleration.
15. methods according to claim 14, also comprise: produce pressure instruction based on power instruction.
16. controlling methods for the synchronization control in double-clutch speed changer according to claim 11, wherein, the described slippage acceleration diagram Part III that comprises the first portion tiltedly fading to maximum value, the constant second portion in maximum value and tiltedly become towards zero with first rate.
17. controlling methods for the synchronization control in double-clutch speed changer according to claim 11, wherein, second area is greater than the first area.
18. controlling methods for the synchronization control in double-clutch speed changer according to claim 11, also comprise: described reverse shift fork is moved to sync bit from neutral position.
19. controlling methods for the synchronization control in double-clutch speed changer according to claim 11, wherein, described flow instruction is constant between sync period.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US32451510P | 2010-04-15 | 2010-04-15 | |
| US61/324515 | 2010-04-15 | ||
| US12/850,096 US8504267B2 (en) | 2010-04-15 | 2010-08-04 | Control system and method for synchronization control in dual clutch transmissions |
| US12/850096 | 2010-08-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102221084A CN102221084A (en) | 2011-10-19 |
| CN102221084B true CN102221084B (en) | 2014-12-31 |
Family
ID=44777720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010530634.XA Active CN102221084B (en) | 2010-04-15 | 2010-10-29 | Control system and method for synchronization control in dual clutch transmissions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102221084B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8577565B2 (en) * | 2011-12-16 | 2013-11-05 | GM Global Technology Operations LLC | Limiting branch pressure to a solenoid valve in a fluid circuit |
| CN103062391A (en) * | 2013-01-18 | 2013-04-24 | 重庆青山工业有限责任公司 | Control method for gear preselection of dual clutch transmission |
| US9416869B2 (en) * | 2014-09-04 | 2016-08-16 | GM Global Technology Operations LLC | Change-of-mind shift control of a dual-clutch transmission |
| US9726239B2 (en) * | 2015-03-11 | 2017-08-08 | American Axle & Manufacturing, Inc. | Clutched power transmitting device with reduced lag time for actuation |
| CN106286811B (en) * | 2015-06-26 | 2018-03-30 | 上海汽车集团股份有限公司 | Synchronizer is in shelves control method, device and system |
| DE102016217096A1 (en) | 2016-09-08 | 2018-03-08 | Audi Ag | Method for synchronizing two drive elements of a drive train of a motor vehicle, and drive train for a motor vehicle |
| CN108223784B (en) * | 2018-03-21 | 2019-10-11 | 吉林大学 | A kind of DCT speed changer plucks the fork controls method of grade process |
| CN115405689A (en) * | 2021-05-26 | 2022-11-29 | 上海汽车集团股份有限公司 | Gear shifting control method and system of double-clutch automatic transmission |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101255920A (en) * | 2007-03-01 | 2008-09-03 | C.R.F.阿西安尼顾问公司 | Electro-hydraulic control system for a motor-vehicle dual-clutch transmission |
| CN101451594A (en) * | 2007-12-05 | 2009-06-10 | 日产自动车株式会社 | Shifting control system |
| CN101520072A (en) * | 2008-02-25 | 2009-09-02 | 通用汽车环球科技运作公司 | Clutch with dual area piston and independent pressure control |
| CN101583510A (en) * | 2007-03-02 | 2009-11-18 | 博格华纳公司 | Hydraulic actuation valve arrangement for dual clutch transmission |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6953417B2 (en) * | 2003-11-17 | 2005-10-11 | Borgwarner Inc. | Method for controlling a dual clutch transmission |
| US7559876B2 (en) * | 2007-01-03 | 2009-07-14 | Gm Global Technology Operations, Inc. | Method of detecting and preventing tie-up during a double transition up-shift |
-
2010
- 2010-10-29 CN CN201010530634.XA patent/CN102221084B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101255920A (en) * | 2007-03-01 | 2008-09-03 | C.R.F.阿西安尼顾问公司 | Electro-hydraulic control system for a motor-vehicle dual-clutch transmission |
| CN101583510A (en) * | 2007-03-02 | 2009-11-18 | 博格华纳公司 | Hydraulic actuation valve arrangement for dual clutch transmission |
| CN101451594A (en) * | 2007-12-05 | 2009-06-10 | 日产自动车株式会社 | Shifting control system |
| CN101520072A (en) * | 2008-02-25 | 2009-09-02 | 通用汽车环球科技运作公司 | Clutch with dual area piston and independent pressure control |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102221084A (en) | 2011-10-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102221084B (en) | Control system and method for synchronization control in dual clutch transmissions | |
| CN102221085B (en) | Control system and method for shift fork position in dual clutch transmissions | |
| US4653351A (en) | Clutch-to-clutch power-on downshifting in a motor vehicle automatic transmission | |
| US5778329A (en) | Powershift transmission system with torque-mapped shifts | |
| KR101670535B1 (en) | System for determining a vehicle mass-based breakpoint for selecting between two different transmission shift schedules | |
| US5046178A (en) | Control method for automatic transmission garage shifts | |
| EP2994669B1 (en) | System and method for optimizing downshifting of a transmission during vehicle deceleration | |
| EP0816720B1 (en) | Automatic transmission shift stabilization control | |
| EP0234685B1 (en) | Clutch upshift control | |
| EP0310276B1 (en) | Output speed sensor diagnostic control for a motor vehicle transmission | |
| US7291092B2 (en) | Shift control apparatus and method for automatic transmission | |
| US20080032861A1 (en) | Hydraulic control system for automatic transmission | |
| US7278953B2 (en) | Transmission shift control method | |
| US8725373B2 (en) | Control device of automatic transmission | |
| CA2315127C (en) | Transmission shift control method | |
| KR101650688B1 (en) | Device and method for controlling automatic gearbox | |
| US8560192B2 (en) | Control system and method for shift fork position in dual clutch transmissions | |
| JPH0650145B2 (en) | Gear change control method in auto transmission | |
| US8504267B2 (en) | Control system and method for synchronization control in dual clutch transmissions | |
| US8190339B2 (en) | Shift control apparatus for automatic transmission | |
| JP4235203B2 (en) | Start control device and start control method for twin clutch transmission | |
| CN102032341A (en) | Method and apparatus for entering neutral idle from a forward drive mode | |
| JP4496201B2 (en) | Control device for shifting of power transmission device for vehicle | |
| US8290670B2 (en) | Clutch control device and clutch control method | |
| CA2298817C (en) | Slip-based shift control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |