CN105587851A - Starting control method for wet-type six-speed dual-clutch type speed changer - Google Patents
Starting control method for wet-type six-speed dual-clutch type speed changer Download PDFInfo
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- CN105587851A CN105587851A CN201610024475.3A CN201610024475A CN105587851A CN 105587851 A CN105587851 A CN 105587851A CN 201610024475 A CN201610024475 A CN 201610024475A CN 105587851 A CN105587851 A CN 105587851A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/36—Inputs being a function of speed
- F16H59/44—Inputs being a function of speed dependent on machine speed of the machine, e.g. the vehicle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/50—Inputs being a function of the status of the machine, e.g. position of doors or safety belts
- F16H59/56—Inputs being a function of the status of the machine, e.g. position of doors or safety belts dependent on signals from the main clutch
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/74—Inputs being a function of engine parameters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/68—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for stepped gearings
Abstract
Provided is a starting control method for a wet-type six-speed dual-clutch type speed changer. Under the starting working condition, a first gear or a second gear adopted for normal starting is judged according to a target gear, the engagement situation of the target gear and a transmission gear and whether a target gear synchronizer moves or not; in the second-gear normal starting process, when the requirement for downshifting the second gear to the first gear is met, starting is achieved after downshifting, and clutch switching control for downshifting the second gear to the first gear in the starting process is provided. According to the starting control method for the wet-type six-speed dual-clutch type speed changer, gear switching can be conducted in the second-gear normal starting process to downshift the second gear to the first gear for starting, slipping friction of clutches can be reduced, rapid starting is achieved, and the starting acceleration performance of vehicles is improved.
Description
Technical field
What the present invention relates to is the technology in a kind of speed changer field, and specifically the two disengaging type speed changer startings of a kind of wet type six speed are controlledMethod.
Background technology
In the Vehicle Starting Process of lift-launch DCT, the control target of clutch is the driving intention according to driver, solenoidoperated cluthesDriving and driven end engages stably, ensures vehicle gentle start, and reduce the sliding wear of clutch, and will ensure engine steady running,Prevent that engine speed from having larger fluctuation, cause engine shake. It is one of dual clutch transmission key technology that starting is controlled,Should ensure the performance of vehicle, also need well to respond driver's driving intention.
The vehicle start strategy that carries at present DCT has employing one gear starting or two gear startings, but rarely in starting-up process, controlsThe switching of odd number processed, even number clutch, starts to walk after realizing downshift, and under the operating mode that also do not propose to start to walk, the clutch control of a gear falls in two gearsMethod processed. The operating mode of vehicle start has multiple, when driver unclamps and travels with two gear crawlings after gas pedal, if now driver is darkThe pedal of stepping on the throttle, the rotating speed of engine can fast rise, and the even number Clutch input shaft at two gear places and the speed discrepancy of engineLarger, when two gear startings, because speed discrepancy is large, the clutch sliding wear time is long, and starting is slow, there is no to respond in time driver's driving meaningFigure, realizes fast starting. Odd number Clutch input shaft rotating speed and the engine speed at one gear place differ little, realize two gears and are down to oneGear is started to walk, and can reduce the sliding wear of starting-up process clutch, is more conducive to the quick combination of starting-up process clutch, completes starting,Step on after a gear is down in large throttle starting simultaneously and start to walk, make vehicle can obtain larger driving force, improve the starting performance of vehicle, fastResponse driver's driving intention.
Through the retrieval of prior art is found, Chinese patent literature CN101978188A, open (bulletin) day 2011.02.16,Disclose a kind of start control device of Dual-clutch transmission for vehicle, this technology is used at the goods that carries dual clutch transmissionWhen vehicle start, carry out in the normal state the startings swimmingly of 2 speed gears, on upward trend etc., promptly switch to 1 speed gear starting.In the time that goods is used vehicle start, first, 2 power shafts of dual clutch transmission are set as to gearshift to 1 speed gear and 2 speed keep offState, under this state, increases the amount of connection of the friction clutch connected with the gear train of 2 speed gears, carries out 2 gear startings. ?After the stipulated time, detect accelerator opening and the speed of a motor vehicle etc., judge driving force too much or deficiency, do not occurring that driving force is notWhen foot, continue, by 2 speed gear startings, vehicle to be accelerated rapidly. In the time judging that driving force is not enough, connect immediately the tooth with 1 speed gearThe friction clutch that train is connected. Owing to shifting gears in advance to the gear train of 1 speed gear, so speed changer becomes after downshift at short noticeState, even also can avoid the uncertain situations such as vehicle rollback at upward trend. But this technology cannot be entered in the time of a gear startingRow optimal control.
Summary of the invention
The present invention is directed to prior art above shortcomings, propose the two disengaging type speed changer starting of a kind of wet type six speed control method,Can in the normal starting-up process of two gears, carry out gear switching and be down to a gear starting, can reduce the sliding wear of clutch, fast starting, carriesThe starting acceleration performance of high vehicle.
The present invention is achieved by the following technical solutions:
The present invention is under starting operating mode, and according to target gear, target gear travelling gear engages situation, and targeted gear bit synchronizer isNo mobile judgement adopts a gear or the normal starting of two gears; In the normal starting-up process of two gears, meet two gears while falling a gear, rise after realizing downshiftWalk and propose the clutch switching controls that a gear falls in two gears in starting-up process.
The present invention specifically comprises the following steps:
A) starting condition judgment: TCU according to engine ignition switch position, brake condition, gear level position, speed of a motor vehicle size,Gas pedal aperture determines whether to meet starting condition;
B) starting mode decision: according to gas pedal aperture and the definite target gear of the speed of a motor vehicle, the information of shift fork position sensor is trueWhether the gear travelling gear that sets the goal engages, and whether targeted gear bit synchronizer moves judges a gear or the normal starting of two gears;
C) enter a gear and normally rise after step mode, control the electric current of odd number clutch solenoid valve, make engine speed follow engineRotating speed of target;
D) enter two gears and normally rise after step mode, control the electric current of even number clutch solenoid valve, make engine speed follow engineRotating speed of target;
E) two gears are normal rises under step mode, according to target gear, target gear travelling gear whether engage, targeted gear bit synchronizerWhether move, even number clutch whether preliminary filling complete and judge whether to meet two gears and fall a blend stop part;
F) enter two gears and fall after a gear pattern, control the electric current of odd number, even number clutch solenoid valve simultaneously, make odd number, even numberWhether clutch switches in order, and fall in a gear process and jump to according to the condition judgment of a gear or the normal starting of two gears at two gearsThe normal step mode that rises of one gear or two gears;
G) two gears are down to after a gear, enter a gear and normally play step mode, according to the control method control odd number of the normal starting of a gear fromClose the electric current of device magnetic valve, make engine speed follow engine target rotating speed.
Technique effect
Compared with prior art, technique effect of the present invention comprises:
1) according to target gear, target gear travelling gear engagement situation, whether targeted gear bit synchronizer moves has judged step mode,Under one gear or the normal step mode of two gears, according to engine target rotating speed and actual speed situation, the electric current of clutch solenoid valve is enteredRow closed-loop control, makes the fluctuation of starting-up process engine speed little, vehicle gentle start.
2) two kept off under step mode, target gear is a gear, a gear travelling gear engagement, a gear synchronized does not move, even number fromWhen closing device preliminary filling and completing, carry out two gears and falls a gear strategy, control odd number, even number clutch switches in order, reduces sliding wear, rise fastStep, meanwhile, can make vehicle can obtain larger driving force, improves the starting performance of vehicle, fully responds driver's driving intention.
Brief description of the drawings
Fig. 1 is flow chart of the present invention;
Fig. 2 is the normal starting of embodiment mono-gear control principle schematic diagram;
Fig. 3 is the normal starting of embodiment bis-gear control principle schematic diagram;
Fig. 4 is that a gear clutch switching controls principle schematic falls in embodiment operating mode two gears of starting to walk;
In figure: a is flow chart the first half, b is flow chart the latter half;
Fig. 5 and Fig. 6 are embodiment of the present invention effect schematic diagram.
Detailed description of the invention
Below embodiments of the invention are elaborated, the present embodiment is implemented under taking technical solution of the present invention as prerequisite,Provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
As shown in Figure 1, be the wet type six speed double-clutch formula speed changers starting control flow charts described in the present embodiment, the present embodimentConcrete steps comprise:
Step a, TCU is according to engine ignition switch position, brake condition, gear level position, speed of a motor vehicle size, gas pedalAperture determines whether to meet starting condition, is specially: started ignition key position, gear level position, the speed of a motor vehicle, gas pedal are openedThe signal of degree, Brake lamp is from entire car controller. Brake condition judges according to Brake lamp signal message, and Brake lamp signal is 1 tableShow braking, Brake lamp signal is 0 expression brakeless. Meet engine ignition switch in ON position, gearshift when detecting simultaneouslyBar position is that non-P gear or N gear, brakeless, the speed of a motor vehicle are less than based on actual gear threshold values, the gas pedal aperture arranging of tabling look-up and are greater thanArrange threshold values time, judge and meet starting condition, otherwise do not play the Clutch Control under step mode.
Described based on the actual gear threshold values arranging of tabling look-up, be specially: the preferred speed of a motor vehicle threshold values 11km/h of a gear, two gears are preferablySpeed of a motor vehicle threshold values 14km/h.
Described engine throttle pedal aperture is greater than preferred threshold values 0.5%.
Step b, starting mode decision: according to gas pedal aperture and the definite target gear of the speed of a motor vehicle, according to shift fork position sensingWhether the information of device determines whether target gear travelling gear engages, move and judge a gear or two gears normally according to targeted gear bit synchronizerPlay step mode, be specially: target gear is tabled look-up definite by gas pedal aperture and the speed of a motor vehicle; From the information of shift fork position sensorObtain the position of synchronized, and then whether definite target gear travelling gear engages and whether targeted gear bit synchronizer is also moving: whenMeet target gear is that a gear, a gear meshing gear engagement, keep off synchronized and do not move simultaneously, is judged as a gear and normally starts to walk;Be that two gears, two gear meshing gear engagements, two keep off synchronizeds and do not move when meet target gear simultaneously, be judged as two gears and normally start to walk.
Step c, when being judged as in step b when entering a gear and normally playing step mode, controls the electric current of odd number clutch solenoid valve,Make engine speed follow engine target rotating speed, until complete starting, as shown in Figure 2, specifically comprise the steps:
C1, tables look-up and obtains the reference rotation velocity of engine according to gas pedal aperture, and the actual speed of Real-time Collection engine; WhenWhen actual engine speed is less than reference rotation velocity, the rotating speed of target taking reference rotation velocity as engine; When actual engine speed is greater than ginsengWhile examining rotating speed, the definition actual engine speed rotating speed that the is transitioned into reference rotation velocity rotating speed of target as engine that successively decreases gradually. CalculateThe speed discrepancy of engine target rotating speed and actual speed;
C2, obtains proportionality coefficient and integral coefficient according to speed discrepancy and gas pedal aperture, will be based on gas pedal aperture and the speed of a motor vehicleTable look-up after the product of the correction factor correction speed discrepancy that obtains and proportionality coefficient as proportional value, will be based on gas pedal aperture and carThe correction factor correction speed discrepancy that zoom table obtains and the product of integral coefficient, as integration item value, obtain the clean moment of torsion of engine;, wherein, TdRepresent the clean moment of torsion of engine, TeRepresent engine torque, can be from engine speed weAnd jointOn the torque characteristics Map figure of valve opening α composition, obtain JeRepresent the rotary inertia of engine to flywheel,Represent that engine speed becomesRate. Then by tabling look-up, engine net torque is converted to after the electric current of corresponding odd number clutch solenoid valve, according to gas pedalAperture and the speed of a motor vehicle table look-up the correction factor that obtains to electric current correction after for feedforward term value; The value of correction factor realizes by demarcation,Gas pedal aperture is little, and correction factor should more greatly, ensure the certain moment of torsion of clutch transmission; The speed of a motor vehicle is large, and correction factor should be more greatly,The clean moments of torsion that transmit engine, to complete starting as early as possible.
C3, determines according to speed discrepancy whether engine speed is adopted to integral adjustment, that is: when engine target rotating speed is greater than realityWhen rotating speed, poor of engine speed is carried out to ratio adjusting, the target current of odd number clutch solenoid valve is feedforward term and proportionalPoor; In the time that engine target rotating speed is less than or equal to actual speed, to poor ratio adjusting and the integral adjustment of carrying out of engine speed,The target current of odd number clutch solenoid valve is the poor of feedforward term value and proportional value, integration item value.
Steps d, when being judged as in step b when entering two gears and normally playing step mode, controls the electric current of even number clutch solenoid valve,Make engine speed follow engine target rotating speed, until complete starting, as shown in Figure 3, specifically comprise the steps:
D1, tables look-up and obtains the reference rotation velocity of engine according to gas pedal aperture, and the actual speed of Real-time Collection engine, whenWhen actual engine speed is less than reference rotation velocity, the rotating speed of target of definition engine is reference rotation velocity; When actual engine speed is greater thanWhen reference rotation velocity, the definition actual engine speed rotating speed that the is transitioned into reference rotation velocity rotating speed of target as engine that successively decreases gradually. MeterCalculate the speed discrepancy of engine target rotating speed and actual speed;
D2, obtains proportionality coefficient and integral coefficient according to speed discrepancy and gas pedal aperture, will be based on gas pedal aperture and the speed of a motor vehicleTable look-up after the product of the correction factor correction speed discrepancy that obtains and proportionality coefficient as proportional value, will be based on gas pedal aperture and carThe correction factor correction speed discrepancy that zoom table obtains and the product of integral coefficient, as integration item value, obtain the clean moment of torsion of engine,, wherein, TdRepresent the clean moment of torsion of engine, TeRepresent engine torque, can be from engine speed weAnd jointOn the torque characteristics Map figure of valve opening α composition, obtain JeRepresent the rotary inertia of engine to flywheel,Represent that engine speed becomesRate. Then by tabling look-up, engine net torque is converted to the electric current of corresponding odd number clutch solenoid valve, then according to gas pedalAperture and the speed of a motor vehicle table look-up the correction factor that obtains to electric current correction after for feedforward term value; The value of correction factor realizes by demarcation, throttlePedal aperture is little, and correction factor should more greatly, ensure the certain moment of torsion of clutch transmission; The speed of a motor vehicle is large, and correction factor should more greatly, pass morePass the clean moment of torsion of engine, to complete as early as possible starting.
D3, determines to the poor integral adjustment that whether adopts of engine speed, that is: when engine target rotating speed is greater than reality according to speed discrepancyWhen border rotating speed, engine speed is only carried out to ratio adjusting, the target current of odd number clutch solenoid valve is feedforward term value and ratioIt is poor that item is worth; In the time that engine target rotating speed is less than or equal to actual speed, to poor ratio adjusting and the integration tune of carrying out of engine speedJoint, the target current of odd number clutch solenoid valve is the poor of feedforward term and proportional value, integration item value.
Step e, two gears are normal to be risen under step mode, according to target gear, target gear travelling gear whether engage, object synchronizationWhether device moves, even number clutch whether preliminary filling complete and judge whether to meet two gears and fall a blend stop part, specifically as shown in Figure 4: twoGear is normal to be risen under step mode, when target gear is that a gear, a gear travelling gear engage, a gear synchronized does not move and even number clutchWhile charging in advance, carry out two gears and fall a gear.
Step f, enters two gears and falls after a gear pattern, controls the electric current of odd number, even number clutch solenoid valve simultaneously, make odd number,Whether even number clutch switches in order, and fall in a gear process and jump according to the condition judgment of a gear or the normal starting of two gears at two gearsForward the normal step mode that rises of a gear or two gears to;
Described orderly switching is divided into three phases: the first stage is odd number clutch preliminary filling, second stage be odd number, even number fromClose the device current increase stage, the phase III is that odd number clutch current increases progressively, and it is corresponding that even number clutch current is down to 2Nm moment of torsionEven number clutch current.
The described first stage, its condition that jumps to second stage is at least meeting following any one condition:
1) target gear is a gear, a gear travelling gear engagement, and a gear synchronized does not move, and odd number clutch preliminary filling completes,Engine speed is greater than the poor of odd number Clutch input shaft rotating speed and first stage offset, and preferably first stage offset is 80rpm;
2) target gear is a gear, a gear travelling gear engagement, a gear synchronized does not move, engine speed be greater than odd number fromClose the poor of device power shaft rotating speed and first stage offset, preferably first stage offset is 80rpm, in the time of first stageBe greater than the first stage lower limit threshold values of setting, preferably first stage lower limit threshold values is 0.35s;
3) be greater than the first stage upper limit threshold values of setting in the time of first stage, preferably first stage upper limit threshold values is 1s;
In the described first stage: odd number clutch current increases fast, completes preliminary filling, for even number clutch, engine orderMark rotating speed is got the maximum of the above-mentioned two normal start-from-stop engine rotating speed of target of gear and odd number Clutch input shaft rotating speed, even number clutch electricityThe electric current that stream calculates for the control method that normally starts to walk according to two gears.
Described second stage, its condition that jumps to the phase III is at least meeting following any one condition:
1) gas pedal aperture is less than 0;
2) odd number clutch solenoid valve electric current is greater than even number clutch solenoid valve electric current and gas pedal aperture is greater than 0;
3) odd number clutch solenoid valve electric current is greater than even number clutch solenoid valve electric current and engine and odd number clutch import and export axleSpeed discrepancy be less than the second stage rotating speed threshold values of setting, preferably second stage rotating speed threshold values is 60rpm;
4) be greater than the threshold values of setting in the time of second stage, preferably second stage upper limit threshold values is 1s;
In described second stage: odd number clutch is gradually changed to through revised engine by the target current of upper computation of PeriodClean electric current corresponding to moment of torsion, preferred correction factor is 0.85; Even number clutch by the target current of upper computation of Period gradually change toThrough electric current corresponding to revised engine net torque, preferred correction factor is 0.7.
The described phase III, its condition that jumps to the normal starting of a gear is at least meeting following any one condition:
1) gas pedal aperture is less than or equal to 0, and odd number clutch current is less than the odd number clutch current that 2Nm moment of torsion is corresponding;
2) speed discrepancy of engine and odd number power shaft is less than the phase III rotating speed threshold values of setting, preferably phase III rotating speed threshold valuesFor 20prm, odd number clutch current is less than the odd number clutch current that 2Nm moment of torsion is corresponding;
3) be greater than the time threshold values of tabling look-up set based on accelerator open degree in the time of phase III. Enter the gear mould of normally starting to walkAfter formula, according to the control method of the normal starting of a gear, control the electric current of odd number clutch solenoid valve, complete starting.
In the described phase III: odd number clutch is gradually changed to through revised engine by the target current of upper computation of PeriodClean electric current corresponding to moment of torsion, preferred correction factor is 0.85, even number clutch current is down to the even number clutch that 2N.m moment of torsion is correspondingDevice electric current.
In second, third stage, detect that target gear is two gears, two gear travelling gear engagements, when two gear synchronizeds do not move,Jump to two gears and normally play step mode.
Step g, two gears are down to after a gear, enter a gear and normally play step mode, according to the control method control of the normal starting of a gearThe electric current of odd number clutch solenoid valve, makes engine speed follow engine target rotating speed, and gear process phase III inspection falls in two gearsMeasure and meet the phase III while jumping to the condition of the normal starting of a gear, jump to a gear and normally play step mode, normally rise according to a gearThe electric current of the control method control odd number clutch solenoid valve of step, makes engine speed follow engine target rotating speed.
This method implement after train experiment data as shown in Figure 5, in the time that two gear crawlings are travelled, when the dark accelerator pedal of driver,When gas pedal aperture is greater than threshold values 0.5, enter starting operating mode by crawling operating mode. Now accelerator open degree is smaller, and two gears are normal to be risenStep. When gas pedal increases to a certain degree, become a gear from the target gear of accelerator open degree and speed of a motor vehicle decision from two gears, carry out twoOne gear starting falls in gear. Be down to after a gear, the normal starting of a gear, enters high-speed working condition after having started to walk.
As shown in Figure 6, along with the increase of gas pedal aperture, the rotating speed of engine constantly rises, the even number clutch at two gear placesThe speed discrepancy of device power shaft and engine is larger, and odd number Clutch input shaft rotating speed and the engine speed at a gear place differ little, riseStep process, odd number clutch sliding wear than the sliding wear of even number clutch still less, is more conducive to the quick combination of starting-up process clutch, withComplete starting, car load acceleration constantly increases, and vehicle can obtain larger driving force, has improved the starting performance of vehicle, rings fastAnswer driver's driving intention.
Claims (13)
1. the two disengaging type speed changer starting of a wet type six speed control method, is characterized in that, the method comprises the steps
A) start to walk condition judgment: TCU according to engine ignition switch position, brake condition, gear level position, speed of a motor vehicle size, oilDoor pedal aperture determines whether to meet starting condition;
B) starting mode decision: according to gas pedal aperture and the definite target gear of the speed of a motor vehicle, the information of shift fork position sensor is determinedWhether target gear travelling gear engages, and whether targeted gear bit synchronizer moves judges a gear or the normal step mode that rises of two gears;
C) enter a gear and normally rise after step mode, control the electric current of odd number clutch solenoid valve, make engine speed follow engine orderMark rotating speed;
D) enter two gears and normally rise after step mode, control the electric current of even number clutch solenoid valve, make engine speed follow engine orderMark rotating speed;
E) two gears are normal rises under step mode, according to target gear, target gear travelling gear whether engage, targeted gear bit synchronizer isWhether no movement, even number clutch preliminary filling complete and judge whether to meet two gears and fall a blend stop part;
F) enter two gears and fall after a gear pattern, control the electric current of odd number, even number clutch solenoid valve simultaneously, make odd number, even number fromClose device and switch in order, and fall and in a gear process, judge whether to jump to a gear or the normal step mode that rises of two gears at two gears;
G) two gears are down to after a gear, enter a gear and normally play step mode, according to the control method control odd number clutch of the normal starting of a gearThe electric current of device magnetic valve, makes engine speed follow engine target rotating speed.
2. the two disengaging type speed changer starting of wet type six speed according to claim 1 control method, is characterized in that, in described stepIn rapid a, meet when detecting simultaneously: engine ignition switch in ON position, gear level position is non-P gear or N gear, nothingBraking, the speed of a motor vehicle are less than based on actual gear tables look-up the threshold values, the gas pedal aperture that arrange while being greater than the threshold values of setting, judges and meetsStep condition, otherwise do not play the clutch control method under step mode.
3. the two disengaging type speed changer starting of wet type six speed according to claim 1 control method, is characterized in that, in described stepIn rapid b, be that a gear, a gear meshing gear engagement, keep off synchronized and do not move when meet target gear simultaneously, be judged as a gearNormal starting; Be that two gears, two gear meshing gear engagements, two keep off synchronizeds and do not move when meet target gear simultaneously, be judged as twoThe normal starting of gear.
4. the two disengaging type speed changer starting of wet type six speed according to claim 1 control method, is characterized in that, in described stepIn rapid c, the normal starting of a gear control method specifically comprises the steps:
C1) table look-up and obtain the reference rotation velocity of engine according to gas pedal aperture, and the actual speed of Real-time Collection engine; When startingWhen machine actual speed is less than reference rotation velocity, the rotating speed of target taking reference rotation velocity as engine; When actual engine speed is greater than with reference to turningWhen speed in,, definition actual engine speed successively decreases the rotating speed that is transitioned into reference rotation velocity gradually as the rotating speed of target of engine, and calculating is startedThe speed discrepancy of machine rotating speed of target and actual speed;
C2) obtain proportionality coefficient and integral coefficient according to speed discrepancy and gas pedal aperture, will table look-up based on gas pedal aperture and the speed of a motor vehicleAfter the correction factor correction speed discrepancy obtaining and the product of proportionality coefficient, as proportional value, will look into based on gas pedal aperture and the speed of a motor vehicleThe correction factor correction speed discrepancy that table obtains and the product of integral coefficient, as integration item value, obtain the clean moment of torsion of engine; Then logicalCrossing tables look-up converts engine net torque after the electric current of corresponding odd number clutch solenoid valve to, enters according to gas pedal aperture and the speed of a motor vehicleRow table look-up the correction factor that obtains to electric current correction after for feedforward term value;
C3) determine according to speed discrepancy whether engine speed is adopted to integral adjustment.
5. the two disengaging type speed changer starting of wet type six speed according to claim 4 control method, is characterized in that, in step c3,In the time that engine target rotating speed is greater than actual speed, poor of engine speed is carried out to ratio adjusting, odd number clutch solenoid valveTarget current is the poor of feedforward term and proportional; In the time that engine target rotating speed is less than or equal to actual speed, poor to engine speedCarry out ratio adjusting and integral adjustment, the target current of odd number clutch solenoid valve be feedforward term value and proportional value, integration item value itPoor.
6. the two disengaging type speed changer starting of wet type six speed according to claim 1 control method, is characterized in that, at described dIn step, the two normal starting of gear control methods specifically comprise the steps:
D1) table look-up and obtain the reference rotation velocity of engine according to gas pedal aperture, and the actual speed of Real-time Collection engine, when startingWhen machine actual speed is less than reference rotation velocity, the rotating speed of target of definition engine is reference rotation velocity; When actual engine speed is greater than referenceWhen rotating speed, the definition actual engine speed rotating speed that the is transitioned into reference rotation velocity rotating speed of target as engine that successively decreases gradually. Calculate and send outThe speed discrepancy of motivation rotating speed of target and actual speed;
D2) obtain proportionality coefficient and integral coefficient according to speed discrepancy and gas pedal aperture, will table look-up based on gas pedal aperture and the speed of a motor vehicleAfter the correction factor correction speed discrepancy obtaining and the product of proportionality coefficient, as proportional value, will look into based on gas pedal aperture and the speed of a motor vehicleThe correction factor correction speed discrepancy that table obtains and the product of integral coefficient, as integration item value, obtain the clean moment of torsion of engine; Then logicalCrossing tables look-up converts engine net torque in the electric current of corresponding odd number clutch solenoid valve, then looks into according to gas pedal aperture and the speed of a motor vehicleThe correction factor that table obtains is feedforward term value after to electric current correction;
D3) determine the poor integral adjustment that whether adopts of engine speed according to speed discrepancy.
7. the two disengaging type speed changer starting of wet type six speed according to claim 6 control method, is characterized in that, in steps d 3,In the time that engine target rotating speed is greater than actual speed, engine speed is only carried out to ratio adjusting, the order of odd number clutch solenoid valveMark electric current is the poor of feedforward term value and proportional value; In the time that engine target rotating speed is less than or equal to actual speed, to engine speedPoor ratio adjusting and the integral adjustment of carrying out, the target current of odd number clutch solenoid valve be feedforward term and proportional value, integration item value itPoor.
8. the two disengaging type speed changer starting of wet type six speed according to claim 1 control method, is characterized in that, in described stepIn rapid e, normally rise under step mode at two gears, when target gear is that a gear, a gear travelling gear engagement, keep off synchronized and do not moveAnd when even number clutch charges in advance, carry out two gears and fall a gear.
9. the two disengaging type speed changer starting of wet type six speed according to claim 1 control method, is characterized in that, in described stepIn rapid f, described orderly switching is divided into three phases: the first stage is odd number clutch preliminary filling, and second stage is odd number, even numberClutch current incremental stages, the phase III is that odd number clutch current increases progressively, even number clutch current is down to 2Nm moment of torsion correspondenceEven number clutch current.
10. the two disengaging type speed changers starting of wet type according to claim 9 six speed control methods, is characterized in that, described theOne-phase, its condition that jumps to second stage is at least meeting following any one condition:
1) target gear is a gear, a gear travelling gear engagement, and a gear synchronized does not move, and odd number clutch preliminary filling completes, and startsMachine rotating speed is greater than the poor of odd number Clutch input shaft rotating speed and offset, and this offset is 80rpm;
2) target gear is a gear, a gear travelling gear engagement, and a gear synchronized does not move, and engine speed is greater than odd number clutchPower shaft rotating speed and offset poor, this offset is 80rpm, is greater than the first stage lower limit of setting in the time of first stageThreshold values, this first stage lower limit threshold values is 0.35s;
3) be greater than the first stage upper limit threshold values of setting in the time of first stage, this first stage upper limit threshold values is 1s.
The two disengaging type speed changers starting of 11. wet types according to claim 9 six speed control methods, is characterized in that, described theTwo-stage, its condition that jumps to the phase III is at least meeting following any one condition:
1) gas pedal aperture is less than 0;
2) odd number clutch solenoid valve electric current is greater than even number clutch solenoid valve electric current and gas pedal aperture is greater than 0;
3) odd number clutch solenoid valve electric current is greater than turning of even number clutch solenoid valve electric current and engine and odd number clutch import and export axleThe poor second stage rotating speed threshold values arranging of speed, this second stage rotating speed threshold values is 60rpm;
4) be greater than the threshold values of setting in the time of second stage, this second stage upper limit threshold values threshold values is 1s.
The two disengaging type speed changers starting of 12. wet types according to claim 9 six speed control methods, is characterized in that, described theIn three stages, its condition that jumps to the normal starting of a gear is at least meeting following any one condition:
1) gas pedal aperture is less than or equal to 0, and odd number clutch current is less than the odd number clutch current that 2Nm moment of torsion is corresponding;
2) speed discrepancy of engine and odd number power shaft is less than the phase III rotating speed threshold values of setting, and this phase III rotating speed threshold values is20prm, odd number clutch current is less than the odd number clutch current that 2Nm moment of torsion is corresponding;
3) be greater than the time threshold values of tabling look-up set based on accelerator open degree in the time of phase III. Enter a gear and normally play step modeAfter, according to the control method of the normal starting of a gear, control the electric current of odd number clutch solenoid valve, complete starting.
The two disengaging type speed changer starting of 13. wet type six speed according to claim 1 control method, is characterized in that, in described stepIn rapid g, two gears fall a gear process phase III while detecting that meeting the phase III jumps to the condition of the normal starting of a gear, jump toThe normal step mode that rises of one gear, according to the electric current of the control method control odd number clutch solenoid valve of the normal starting of a gear, turns engineSpeed is followed engine target rotating speed.
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