CN106641238B - The oil-filled control method of wet dual clutch transmission and system - Google Patents
The oil-filled control method of wet dual clutch transmission and system Download PDFInfo
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- CN106641238B CN106641238B CN201611148103.8A CN201611148103A CN106641238B CN 106641238 B CN106641238 B CN 106641238B CN 201611148103 A CN201611148103 A CN 201611148103A CN 106641238 B CN106641238 B CN 106641238B
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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
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
- F16H61/4008—Control of circuit pressure
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Abstract
The present invention relates to a kind of oil-filled control method of wet-type dual-clutch transmission and systems, this method comprises: continuing to export preliminary filling oil pressure value to double-clutch speed changer in the pre-oiling stage；After the pre-oiling stage, in the first set period of time, continue to export precharge pressure value to the double-clutch speed changer；After first set period of time, obtain the actual pressure of the double-clutch speed changer, and detect whether the actual pressure is greater than the first setup pressure value, if it is, precharge pressure is exported to the double-clutch speed changer according to first pressure control mode, until the actual pressure is equal to second setup pressure value, first setup pressure value is less than second setup pressure value.Through the invention, the accurate control oil-filled to clutch is realized.
Description
Technical field
The present invention relates to double-clutch speed changer controller field, in particular to a kind of oil-filled control of wet-type dual-clutch transmission
Method and system processed.
Background technique
Double-clutch speed changer (Dual Clutch Transmission, DCT) combines manual transmission and hydraulic automatic
The advantages of speed changer, transmission efficiency is high, structure is simple, not only increases the dynamic property and economy of vehicle, and greatly change
It has been apt to the driver comfort of vehicle.Wet-type dual-clutch is answered extensively due to long service life and feature with large heat capacity
With.Oil-filled wet clutch is to allow clutch pressure to be rapidly achieved semi-linkage point to prepare for subsequent starting or gearshift control,
The oil-filled characteristic of wet clutch has an important influence gear shifting quality and starting performance.
The oil-filled characteristic of clutch will receive transmission fluid sluggishness physical characteristic, gearbox oil temperature and vehicle's current condition
The influence of (traveling or parking) can be by utilizing transmission control unit for transmission electronic control angle
(Transmission Control Unit, TCU) accurately control clutch pressure carrys out the oil-filled characteristic of active control clutch, allows
Vehicle can have good starting performance and gear shifting quality under different operating conditions.
Wet dual clutch transmission is oil-filled at present is mainly completed by HYDRAULIC CONTROL SYSTEM clutch pressure, so that clutch
Device pressure reaches semi-linkage point.That is TCU according to information such as clutch actual pressure, clutch desired pressure, oil-filled times, to from
Clutch is oil-filled to be controlled.
Specifically, as shown in Figure 1, abscissa is time t, unit s；Ordinate is clutch pressure P, unit Kpa；
Precharge pressure Pf ', clutch half is arranged according to information such as clutch actual pressure, clutch desired pressure, oil-filled times in TCU
Link pressure Pk ', oil-filled first time period T1 ', oil-filled second time period T2 ', obtain clutch desired pressure curve Pd ', from
Clutch actual pressure curve Pa '.
In the oil-filled first stage, higher precharge pressure Pf ' is arranged in TCU, and control clutch starts oil-filled, clutch reality
Pressure curve Pa ' rises, and at the end of first time period T1 ', the oil-filled first stage terminates.
In oil-filled second stage, TCU is arranged clutch desired pressure descending slope value, makes under clutch desired pressure Pd '
Semi-linkage point Pk ' is dropped to, at this point, clutch actual pressure curve Pa ' slowly follows rising close to semi-linkage point Pk ', when second
At the end of period T2 ', oil-filled second stage terminates, to complete Oil feeding process.
The oil-filled control of wet-type dual-clutch in the prior art has the following deficiencies:
(1) whole process is opened loop control, clutch actual pressure can not very accurately with clutch with desired pressure, from
And influence subsequent starting performance and gear shifting quality.
(2) clutch pressure is oil-filled since 0Kpa, and oil-filled control is unstable, and the oil-filled time is long.
Therefore, prior art control existing defects oil-filled for wet-type dual-clutch, it is necessary to do adaptive optimization.
Summary of the invention
The present invention provides a kind of oil-filled control method of wet dual clutch transmission and systems, to fill to double-clutch speed changer
Oil is accurately controlled.
A kind of oil-filled control method of wet dual clutch transmission, which comprises
In the pre-oiling stage, continue to export preliminary filling oil pressure value to double-clutch speed changer, the preliminary filling oil pressure value is less than second
Setup pressure value；
After the pre-oiling stage, in the first set period of time, continue to export oil-filled pressure to the double-clutch speed changer
Force value, the precharge pressure value are greater than second setup pressure value；
After first set period of time, the actual pressure of the double-clutch speed changer is obtained, and detects the practical pressure
Whether power is greater than the first setup pressure value, if so, filling according to first pressure control mode to double-clutch speed changer output
Oil pressure, until the actual pressure is equal to second setup pressure value, first setup pressure value is less than described second
Setup pressure value.
Preferably, the method also includes:
If detect the actual pressure be less than first setup pressure value, according to second pressure control mode to
The double-clutch speed changer exports precharge pressure, until the actual pressure is equal to first setup pressure value；
After the actual pressure is equal to first setup pressure value, according to first pressure control mode to it is described it is double from
It closes speed changer and exports precharge pressure, until the actual pressure is equal to the second setup pressure value, first setup pressure value is small
In second setup pressure value.
Preferably, the method also includes:
If detecting that the actual pressure is greater than or equal to second setup pressure value, to double clutch speed-changings
Device exports second setup pressure value.
Preferably, the method also includes:
After the actual pressure is equal to second setup pressure value, the dual-clutch transmission output is filled
Oil pressure carries out PI control, so that the difference of the actual pressure and second setup pressure value is less than steady-state error value.
Preferably, the first pressure control mode includes:
Change the precharge pressure exported to the double-clutch speed changer according to the first descending slope value.
Preferably, the second pressure control mode includes:
Change the precharge pressure exported to the double-clutch speed changer according to the second descending slope value.
Preferably, first setup pressure value is the 80% of second setup pressure value.
A kind of oil-filled control system of wet dual clutch transmission, comprising: gear box control unit and with the gearbox
The double-clutch speed changer of control unit electrical connection；In the pre-oiling stage, the gear box control unit continues to double clutch speed-changings
Device exports preliminary filling oil pressure value, and the preliminary filling oil pressure value is less than the second setup pressure value；After the pre-oiling stage, the gearbox
Control unit persistently exports precharge pressure value to the double-clutch speed changer in the first setting time, and the precharge pressure value is big
In second setup pressure value；After the first set period of time, the gear box control unit obtains double clutches
The actual pressure of speed changer, and detect whether the actual pressure is greater than the first setup pressure value, if so, according to first pressure
Control mode exports precharge pressure to the double-clutch speed changer, until the actual pressure is equal to the second setting pressure
Value.
Preferably, when the actual pressure be less than first setup pressure value, then the gear box control unit according to
Second pressure control mode exports precharge pressure to the double-clutch speed changer, sets until the actual pressure is equal to described first
Level pressure force value；
After the actual pressure is equal to first setup pressure value, the gear box control unit is according to first pressure
Control mode exports precharge pressure to the double-clutch speed changer, until the actual pressure is equal to the second setup pressure value, institute
The first setup pressure value is stated less than second setup pressure value.
Preferably, when detecting that the actual pressure is greater than or equal to second setup pressure value, the gearbox
Control unit exports second setup pressure value to the double-clutch speed changer.
The beneficial effects of the present invention are:
The oil-filled control method of wet dual clutch transmission provided in an embodiment of the present invention and system are held in the pre-oiling stage
Continue to double-clutch speed changer and exports preliminary filling oil pressure value；After the pre-oiling stage, in the first set period of time, continue to institute
Double-clutch speed changer output precharge pressure value is stated, after the first set period of time, according to the practical pressure of double-clutch speed changer
Power exports precharge pressure to the double-clutch speed changer according to first pressure control mode and second pressure control mode respectively；
Through the invention, the accurate control oil-filled to double-clutch speed changer is realized.
Detailed description of the invention
Fig. 1 is a kind of control figure of the oil-filled control method of double-clutch speed changer in the prior art.
Fig. 2 is a kind of flow chart of the oil-filled control method of double-clutch speed changer of the embodiment of the present invention.
Fig. 3 is a kind of control figure of the oil-filled control method of double-clutch speed changer of the embodiment of the present invention.
Fig. 4 is another flow chart of the oil-filled control method of double-clutch speed changer of the embodiment of the present invention.
Fig. 5 is another control figure of the oil-filled control method of double-clutch speed changer of the embodiment of the present invention.
It is attached marked in the figure:
Pf ', precharge pressure Pk ', semi-linkage pressure T1 ', oil-filled first time period T2 ', oil-filled second time period
Pd ', clutch desired pressure curve Pa ', clutch actual pressure curve Pp, preliminary filling oil pressure value Pf, precharge pressure value Pk,
Semi-linkage pressure T1, the first set period of time Pd, clutch desired pressure curve Pa, clutch actual pressure curve Pg2,
Second descending slope Pg1, the first descending slope Tp, pre-charging time
Specific embodiment
In order to enable those skilled in the art to be further understood that feature and technology contents of the invention, with reference to the accompanying drawing
It elaborates with embodiment to the embodiment of the present invention.
It is a kind of flow chart of the oil-filled control method of wet dual clutch transmission of the embodiment of the present invention as shown in Figure 2, including
Following steps:
Step 101: in the pre-oiling stage, continuing to export preliminary filling oil pressure value to double-clutch speed changer.
It should be noted that control flow of the embodiment of the present invention is realized by gear box control unit, gearbox control is single
Double clutch status signal is provided in member, the status signal include: do not activate, preliminary filling, it is oil-filled and activation four kinds of states.Speed change
Case control unit may determine that whether current double-clutch speed changer locates the pre-oiling stage according to the double clutch status signal.
Further, as shown in figure 3, preliminary filling oil pressure value Pp by gearbox control unit according to current double-clutch speed changer temperature
Degree is determined by calibration, such as value of the preliminary filling oil pressure value Pp between 150~180KPa.
Step 102: in the first set period of time, continuing to export precharge pressure value to the double-clutch speed changer.
It should be noted that the first set period of time T1 as shown in Figure 3 is determined by calibration by gear box control unit, than
Such as, value of the first set period of time T1 between 250ms~400ms；Precharge pressure value passes through calibration by gear box control unit
It determines, precharge pressure value Pf as shown in Figure 3, for example, value of the precharge pressure value Pf between 350~560KPa.
Step 103: obtaining the actual pressure of the double-clutch speed changer.
Specifically, double-clutch speed changer can be acquired by the pressure sensor being placed in double-clutch speed changer in real time
Actual pressure.
Step 104: detecting whether the actual pressure is greater than the first setup pressure value；If so, executing step 105；It is no
Then, step 106 is executed.
Specifically, the first setup pressure value can semi-linkage pressure Pk as shown in Figure 3 determine, such as first set pressure as
The 80% of semi-linkage pressure Pk, further, semi-linkage pressure Pk is also the second setup pressure value, and semi-linkage pressure Pk is speed change
Case control unit is determined by calibration, for example, the value of semi-linkage pressure Pk is the value between 200~300KPa.
Step 105: exporting precharge pressure to the double-clutch speed changer according to first pressure control mode, execute step
106。
Specifically, the first pressure control mode include: make to the double-clutch speed changer export precharge pressure by
Change according to the first descending slope value.As shown in figure 3, changing according to the first descending slope Pg1.
It should be noted that the first descending slope Pg1 can be determined by calibration, for example, the first descending slope Pg1 exists
Value between 300~100KPa/s.
Step 106: detecting whether the actual pressure is equal to the second setup pressure value；If so, executing step 107；It is no
Then, 105 are returned to step.
Step 107: terminating.
The oil-filled control method of wet dual clutch transmission provided in an embodiment of the present invention, clutch expectation as shown in Figure 3
Pressure curve Pd is the precharge pressure that gear box control unit is exported to the double-clutch speed changer, and clutch actual pressure is bent
Line Pa is the actual pressure of double-clutch speed changer that gear box control unit is detected by pressure sensor.
The oil-filled control method of wet dual clutch transmission provided in an embodiment of the present invention continues in the pre-oiling stage to double
Clutch speed changer exports preliminary filling oil pressure value；After the pre-oiling stage, in the first set period of time, continue to it is described it is double from
It closes speed changer and exports precharge pressure value, after the first set period of time, distinguished according to the actual pressure of double-clutch speed changer
Precharge pressure is exported to the double-clutch speed changer according to first pressure control mode, until actual pressure is equal to the second setting pressure
Force value；Through the invention, the accurate control to double-clutch speed changer is realized.
Further, in order to grasp gear box control unit to double clutch actual pressure, as shown in Figure 4
It is another flow chart of the oil-filled control method of double-clutch speed changer of the embodiment of the present invention, comprising steps of
Step 201: in the pre-oiling stage, continuing to export preliminary filling oil pressure value to double-clutch speed changer.
Step 202: in the first set period of time, continuing to export precharge pressure value to the double-clutch speed changer.
Step 203: obtaining the actual pressure of the double-clutch speed changer.
Step 204: whether detecting the actual pressure less than the first setup pressure value；If so, executing step 205；It is no
Then, step 210 is executed.
Step 205: exporting precharge pressure to the double-clutch speed changer according to second pressure control mode, execute step
206。
Specifically, the second pressure control mode include: make to the double-clutch speed changer export precharge pressure by
Change according to the second descending slope value.As shown in figure 4, changing according to the second descending slope Pg2.
It should be noted that the second descending slope Pg2 can be determined by calibration, for example, the second descending slope Pg2 exists
Value between 500~1500KPa/s.
Step 206: whether detection actual pressure is equal to first setup pressure value；If so, executing step 207；It is no
Then, 205 are returned to step.
Step 207: exporting precharge pressure to the double-clutch speed changer according to first pressure control mode, execute step
208。
Specifically, first setup pressure value is the 80% of second setup pressure value.
Specifically, the second setup pressure value is semi-linkage pressure Pk shown in Fig. 4, and semi-linkage pressure Pk is gearbox control
What unit processed was determined by calibration, first setup pressure value is the 80% of second setup pressure value, for example, semi-linkage
The value of pressure Pk is the value between 200~300KPa, then value of first setup pressure value between 160~240KPa.
Step 208: whether detection actual pressure is equal to second setup pressure value；If so, executing step 209；It is no
Then, 207 are returned to step.
Step 209: terminating.
Step 210: whether detection actual pressure is greater than or equal to the second setup pressure value；If so, executing step 211；
Otherwise, 207 are returned to step.
Step 211: exporting the second setup pressure value to double-clutch speed changer, execute step 209.
The oil-filled control method of wet dual clutch transmission provided in an embodiment of the present invention is greater than first in detection actual pressure
The basis of setup pressure value further detects whether actual pressure is then pressed less than the second setting value if it is less than the second setting value
Precharge pressure is exported to double-clutch speed changer according to second pressure control mode, otherwise, to the second setting of double-clutch speed changer output
Pressure value.Through the invention, gear box control unit is made to have carried out more accurate grasp to double clutch actual pressure, it is accurate
Control to double-clutch speed changer.
Since the control mode of implementation of the invention is opened loop control, in order to guarantee the accurate of double-clutch speed changer pressure
Property, in another embodiment of the invention, after exporting second setup pressure value to the dual-clutch transmission, also
Can the precharge pressure of the opposite dual-clutch transmission output carry out PI control so that the actual pressure and described second
The difference of setup pressure value is less than steady-state error value.It should be noted that the steady-state error value is led to by gear box control unit
It crosses calibration to determine, for example, steady-state error value is ± 0.5KPa.
The embodiment of the present invention is described in detail below with reference to Fig. 5:
Step 1: the pre-oiling stage (i.e. pre-charging time Tp stage in Fig. 3).
When clutch pressure is 0Kpa, in clutch cavity body in there are air, the oil-filled control of clutch is unstable, because
This, establishes a part of oil pressure (preliminary filling oil pressure value Pp) in advance in clutch, avoids having air in clutch cavity body, it is ensured that
Oil-filled stability.From the oil-filled pressure difference ratio to semi-linkage pressure Pf (the second setup pressure value) of preliminary filling oil pressure value Pp from 0Kpa
The oil-filled pressure difference to semi-linkage point is small, can accelerate the oil-filled time.
This pre-oiling stage is opened loop control, and preliminary filling oil pressure value Pp is arranged in gear box control unit, the pre-oiling stage from
Clutch actual pressure curve Pa more rises with clutch desired pressure curve Pd, when reaching pre-charging time Tp, pre-oiling control
Process processed terminates.
Step 2: the oil-filled first control stage
After the pre-oiling stage, clutch actual pressure curve Pa is pressed close to preliminary filling oil pressure Pp, clutch expectation
Force curve Pd reaches precharge pressure value Pf, since precharge pressure value Pf is greater than the pressure value of actual pressure curve Pa, clutch at this time
Device actual pressure curve Pa is increased since preliminary filling oil pressure Pp.The stage control belongs to opened loop control, when reaching oil-filled first
When setting time T1, the oil-filled first control stage terminates.
Step 3: oil-filled second stage control
At the end of the oil-filled first stage, clutch actual pressure Pa rise quickly, due to clutch precharge pressure ratio from
It is much larger that clutch half joins pressure Pk, close to before clutch semi-linkage pressure Pk, in order to avoid clutch when clutch combination
Actual pressure Pa overshoot causes to impact, and is controlled at this time using oil-filled falling pressure two-part.
The first descending slope Pg1 and the second descending slope Pg2 is respectively set, wherein the second descending slope Pg2 is greater than first
Descending slope Pg1 first quickly slows down clutch by the second descending slope Pg2, and the actual pressure rate of climb passes through the first decline
Slope Pg1 then further slows down the clutch actual pressure curve Pa rate of climb, when clutch actual pressure curve Pa close to from
Near clutch semi-linkage pressure Pk, oil-filled control terminates.
Step 4: PI controls
After oil-filled second stage, entire oil-filled control terminates, since the control of front is opened loop control, clutch
There is no stablize near clutch semi-linkage pressure Pk by actual pressure Pa.In order to guarantee the accuracy of clutch pressure control,
Increase PI controls.
Correspondingly, the present invention also provides a kind of oil-filled control systems of wet dual clutch transmission, comprising: gearbox control
Unit and the double-clutch speed changer being electrically connected with the gear box control unit；It is characterized in that, in the pre-oiling stage, it is described
Gear box control unit continues to export preliminary filling oil pressure value to double-clutch speed changer；After the pre-oiling stage, the gearbox control
Unit processed persistently exports precharge pressure value to the double-clutch speed changer in the first setting time；In the first set period of time knot
Shu Hou, the gear box control unit obtain the actual pressure of the double-clutch speed changer, and whether detect the actual pressure
Greater than the first setup pressure value, if so, precharge pressure is exported to the double-clutch speed changer according to first pressure control mode,
Until the actual pressure is equal to second setup pressure value.
Specifically, in the embodiment of the present invention, the first pressure control mode includes:
Change the precharge pressure exported to the double-clutch speed changer according to the first descending slope value.As shown in figure 3, can
To change according to the first descending slope Pg1, and the first descending slope Pg1 is determined by calibration by gear box control unit, for example,
Value of the first descending slope Pg1 between 300~100KPa/s.
It is when the actual pressure is less than first setup pressure value, then described in another embodiment of present system
Gear box control unit exports precharge pressure to the double-clutch speed changer according to second pressure control mode, until the reality
Pressure is equal to first setup pressure value；After the actual pressure is equal to first setup pressure value, the gearbox
Control unit exports precharge pressure to the double-clutch speed changer according to first pressure control mode, until described actual pressure etc.
In the second setup pressure value, first setup pressure value is less than second setup pressure value.
Specifically, in the embodiment of the present invention, the second pressure control mode includes:
Change the precharge pressure exported to the double-clutch speed changer according to the second descending slope value.As shown in figure 3, can
To change according to the second descending slope Pg2, and the second descending slope Pg2 can be determined by calibration by gear box control unit,
For example, value of the second descending slope Pg2 between 500~1500KPa/s.
Specifically, first setup pressure value is equal to the 80% of second setup pressure value.Specifically, the second setting
Pressure value is Fig. 3 or semi-linkage pressure Pk shown in fig. 5, and semi-linkage pressure Pk is that gear box control unit is determined by calibration
, for example, the value of semi-linkage pressure Pk is the value between 200~300KPa, then the first setup pressure value is 160~240KPa
Between value.
In another embodiment of present system, pressed when detecting that the actual pressure is set more than or equal to described second
When force value, the gear box control unit exports second setup pressure value to the double-clutch speed changer.
Further, in another embodiment of present system, described second is being exported to the dual-clutch transmission
After setup pressure value, the gear box control unit can also carry out the precharge pressure that the dual-clutch transmission exports
PI control, so that the difference of the actual pressure and second setup pressure value is less than steady-state error value.It should be noted that
The steady-state error value is determined by calibration by gear box control unit, for example, steady-state error value is ± 0.5KPa.
In conclusion the oil-filled control system of wet dual clutch transmission provided in an embodiment of the present invention, by pre-oiling and
PI item at the end of oil-filled, which controls, reaches semi-linkage point to be accurately controlled clutch pressure, realizes to double-clutch speed changer
Accurate control.
The embodiment of the present invention has been described in detail above, and specific embodiment used herein carries out the present invention
It illustrates, the above embodiments are only used to help understand system and method for the invention；Meanwhile for the one of this field
As technical staff, according to the thought of the present invention, there will be changes in the specific implementation manner and application range, to sum up institute
It states, the contents of this specification are not to be construed as limiting the invention.
Claims (10)
1. a kind of oil-filled control method of wet dual clutch transmission, which is characterized in that the described method includes:
In the pre-oiling stage, continue to export preliminary filling oil pressure value to double-clutch speed changer, the preliminary filling oil pressure value is less than the second setting
Pressure value；
After the pre-oiling stage, in the first set period of time, continue to export precharge pressure value to the double-clutch speed changer,
The precharge pressure value is greater than second setup pressure value；
After first set period of time, the actual pressure of the double-clutch speed changer is obtained, and detect the actual pressure to be
It is no to be greater than the first setup pressure value, if so, exporting oil-filled pressure to the double-clutch speed changer according to first pressure control mode
Power, until the actual pressure is equal to second setup pressure value, first setup pressure value is less than second setting
Pressure value.
2. the oil-filled control method of wet dual clutch transmission according to claim 1, which is characterized in that the method is also wrapped
It includes:
If detecting that the actual pressure is less than first setup pressure value, according to second pressure control mode to described
Double-clutch speed changer exports precharge pressure, until the actual pressure is equal to first setup pressure value；
After the actual pressure is equal to first setup pressure value, become according to first pressure control mode to double clutches
Fast device exports precharge pressure, until the actual pressure is equal to the second setup pressure value, first setup pressure value is less than institute
State the second setup pressure value.
3. the oil-filled control method of wet dual clutch transmission according to claim 2, which is characterized in that the method is also wrapped
It includes:
It is defeated to the double-clutch speed changer if detecting that the actual pressure is greater than or equal to second setup pressure value
Second setup pressure value out.
4. the oil-filled control method of wet dual clutch transmission according to claim 3, which is characterized in that the method is also wrapped
It includes:
After the actual pressure is equal to second setup pressure value, to the oil-filled pressure of dual-clutch transmission output
Power carries out PI control, so that the difference of the actual pressure and second setup pressure value is less than steady-state error value.
5. the oil-filled control method of wet dual clutch transmission according to claim 1-4, which is characterized in that described
First pressure control mode includes:
Change the precharge pressure exported to the double-clutch speed changer according to the first descending slope value.
6. according to the oil-filled control method of the described in any item wet dual clutch transmissions of claim 2-4, which is characterized in that described
Second pressure control mode includes:
Change the precharge pressure exported to the double-clutch speed changer according to the second descending slope value.
7. the oil-filled control method of wet dual clutch transmission according to claim 6, which is characterized in that first setting
Pressure value is the 80% of second setup pressure value.
8. a kind of oil-filled control system of wet dual clutch transmission, comprising: gear box control unit and with the gearbox control
The double-clutch speed changer of unit electrical connection processed；It is characterized in that, the gear box control unit continues to double in the pre-oiling stage
Clutch speed changer exports preliminary filling oil pressure value, and the preliminary filling oil pressure value is less than the second setup pressure value；After the pre-oiling stage, institute
It states gear box control unit and persistently exports precharge pressure value to the double-clutch speed changer in the first setting time, it is described oil-filled
Pressure value is greater than second setup pressure value；After the first set period of time, the gear box control unit obtains institute
The actual pressure of double-clutch speed changer is stated, and detects whether the actual pressure is greater than the first setup pressure value, if so, according to
First pressure control mode exports precharge pressure to the double-clutch speed changer, sets until the actual pressure is equal to described second
Level pressure force value.
9. the oil-filled control system of wet dual clutch transmission according to claim 8, which is characterized in that when the practical pressure
Power is less than first setup pressure value, then the gear box control unit is according to second pressure control mode to double clutches
Speed changer exports precharge pressure, until the actual pressure is equal to first setup pressure value；
After the actual pressure is equal to first setup pressure value, the gear box control unit is controlled according to first pressure
Mode exports precharge pressure to the double-clutch speed changer, until the actual pressure is equal to the second setup pressure value, described the
One setup pressure value is less than second setup pressure value.
10. the oil-filled control system of wet dual clutch transmission according to claim 9, which is characterized in that when detecting
When stating actual pressure more than or equal to second setup pressure value, the gear box control unit is to the double-clutch speed changer
Export second setup pressure value.
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| CN201611148103.8A CN106641238B (en) | 2016-12-13 | 2016-12-13 | The oil-filled control method of wet dual clutch transmission and system |
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| CN201611148103.8A CN106641238B (en) | 2016-12-13 | 2016-12-13 | The oil-filled control method of wet dual clutch transmission and system |
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|---|---|---|---|---|
| CN112098075B (en) * | 2020-09-14 | 2022-01-28 | 广州汽车集团股份有限公司 | Oil filling test method and device for synchronizer and rack test system |
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| CN106641238A (en) | 2017-05-10 |
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