CN106641238A - Wet type dual-clutch transmission oil charging control method and system - Google Patents
Wet type dual-clutch transmission oil charging control method and system Download PDFInfo
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- CN106641238A CN106641238A CN201611148103.8A CN201611148103A CN106641238A CN 106641238 A CN106641238 A CN 106641238A CN 201611148103 A CN201611148103 A CN 201611148103A CN 106641238 A CN106641238 A CN 106641238A
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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 invention relates to a wet type dual-clutch transmission oil charging control method and system. The method comprises the steps that in the oil pre-charging stage, an oil pre-charging pressure value is output to a dual-clutch transmission continuously; in a first set time period, an oil charging pressure value is output to the dual-clutch transmission continuously; and after the first set time period, the actual pressure of the dual-clutch transmission is obtained, whether the actual pressure is higher than a first set pressure value or not is detected, if yes, oil charging pressure is output to the dual-clutch transmission in a first pressure control mode until the actual pressure is equal to a second set pressure value, and the first set pressure value is small than the second set pressure value. According to the wet type dual-clutch transmission oil charging control method and system, oil charging of clutches is precisely controlled.
Description
Technical field
The present invention relates to double-clutch speed changer controller field, the oil-filled control of more particularly to a kind of wet-type dual-clutch transmission
Method and system processed.
Background technology
Double-clutch speed changer (Dual Clutch Transmission, DCT) combines manual transmission and hydraulic automatic
The advantage of speed changer, transmission efficiency, simple structure not only increase the dynamic property and economy of vehicle, and greatly change
It has been apt to the driver comfort of vehicle.Wet-type dual-clutch extensively should due to obtaining the characteristics of long service life and big thermal capacity
With.It is that to allow clutch pressure to be rapidly achieved semi-linkage point be that follow-up starting or gearshift control are prepared that wet clutch is oil-filled,
The oil-filled characteristic of wet clutch is to gear shifting quality and starting performance important.
The oil-filled characteristic of clutch can be subject to transmission fluid sluggishness physical characteristic, gearbox oil temperature and vehicle's current condition
The impact of (traveling or parking), from for transmission electronic control angle, can be by using transmission control unit
(Transmission Control Unit, TCU) precise 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 modes.
At present wet dual clutch transmission is oil-filled 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 is s；Ordinate is clutch pressure P, and unit is Kpa；
TCU arranges precharge pressure Pf ', clutch half according to information such as clutch actual pressure, clutch desired pressure, oil-filled times
Linkage 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, TCU arranges higher precharge pressure Pf ', and control clutch starts oil-filled, clutch reality
Pressure curve Pa ' rises, when first time period T1 ' at the end of, the oil-filled first stage terminates.
In oil-filled second stage, TCU arranges clutch desired pressure descending slope value, makes clutch desired pressure Pd ' under
Semi-linkage point Pk ' is dropped to, now, clutch actual pressure curve Pa ' slowly follows the close semi-linkage point Pk ' of rising, when second
At the end of time period T2 ', oil-filled second stage terminates, so as to complete Oil feeding process.
There is following defect in the oil-filled control of wet-type dual-clutch in prior art：
(1) whole process is opened loop control, clutch actual pressure cannot very accurately with clutch with desired pressure, from
And affect follow-up starting performance and gear shifting quality.
(2) clutch pressure start from 0Kpa it is oil-filled, it is oil-filled control it is unstable, the oil-filled time is long.
Therefore, prior art is for the oil-filled control existing defects of wet-type dual-clutch, it is necessary to do adaptive optimization.
The content of the invention
The invention provides a kind of oil-filled control method of wet dual clutch transmission and system, to fill to double-clutch speed changer
Oil is accurately controlled.
A kind of oil-filled control method of wet dual clutch transmission, methods described includes：
In the pre-oiling stage, continue to export preliminary filling oil pressure value to double-clutch speed changer；
After the pre-oiling stage terminates, in the first setting time section, continue to export oil-filled pressure to the double-clutch speed changer
Force value；
After first setting time section terminates, the actual pressure of the double-clutch speed changer is obtained, and detect the actual pressure
Whether power is more than the first setup pressure value, if it is, filling to double-clutch speed changer output according to first pressure control mode
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, methods described also includes：
If detecting the actual pressure 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
Speed changer output precharge pressure is closed, until the actual pressure is equal to the second setup pressure value, first setup pressure value is little
In second setup pressure value.
Preferably, methods described also includes：
If the actual pressure is detected more than or equal to second setup pressure value, to described pair of clutch speed-changing
Device exports second setup pressure value.
Preferably, methods described 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 controls, so that the actual pressure is less than steady-state error value with the difference of second setup pressure value.
Preferably, the first pressure control mode includes：
Make to the double-clutch speed changer output precharge pressure according to the first descending slope value changes.
Preferably, the second pressure control mode includes：
Make to the double-clutch speed changer output precharge pressure according to the second descending slope value changes.
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, including：Gear box control unit and with the gearbox
The double-clutch speed changer of electrical connection；In the pre-oiling stage, the gear box control unit continues pre- to double-clutch speed changer output
Fill oil pressure value；After the pre-oiling stage terminates, the gear box control unit is in the first setting time to described pair of clutch speed-changing
Device persistently exports precharge pressure value；After the first setting time section terminates, the gear box control unit obtains described pair of clutch
The actual pressure of speed changer, and whether the actual pressure is detected more than the first setup pressure value, if it is, according to first pressure
Control mode to the double-clutch speed changer exports precharge pressure, until the actual pressure is equal to the described 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 to the double-clutch speed changer exports precharge pressure, until the actual pressure sets 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 to the double-clutch speed changer exports precharge pressure, 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 the actual pressure is detected more than or equal to second setup pressure value, the gearbox
Control unit to the double-clutch speed changer exports second setup pressure value.
The beneficial effects of the present invention is：
The oil-filled control method of wet dual clutch transmission provided in an embodiment of the present invention and system, in the pre-oiling stage, hold
Continue to double-clutch speed changer and export preliminary filling oil pressure value；After the pre-oiling stage terminates, in the first setting time section, continue to institute
Double-clutch speed changer output precharge pressure value is stated, after the first setting time section terminates, according to the actual pressure of double-clutch speed changer
Power exports precharge pressure according to first pressure control mode and second pressure control mode to the double-clutch speed changer respectively；
By the present invention, the precise control oil-filled to double-clutch speed changer is realized.
Description of the drawings
Fig. 1 is a kind of control figure of the oil-filled control method of double-clutch speed changer in prior art.
Fig. 2 is a kind of flow chart of the oil-filled control method of embodiment of the present invention double-clutch speed changer.
Fig. 3 is a kind of control figure of the oil-filled control method of embodiment of the present invention double-clutch speed changer.
Fig. 4 is another kind of flow chart of the oil-filled control method of embodiment of the present invention double-clutch speed changer.
Fig. 5 is another kind of control figure of the oil-filled control method of embodiment of the present invention double-clutch speed changer.
Mark in accompanying drawing：
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 setting time section 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 that those skilled in the art can be further understood that the feature and technology contents of the present invention, below in conjunction with the accompanying drawings
The embodiment of the present invention is elaborated with embodiment.
It is as shown in Figure 2 a kind of flow chart of the oil-filled control method of embodiment of the present invention wet dual clutch transmission, including
Following steps：
Step 101：In the pre-oiling stage, continue to export preliminary filling oil pressure value to double-clutch speed changer.
It should be noted that embodiment of the present invention control flow is realized by gear box control unit, gearbox control is single
Double clutch status signal is provided with unit, the status signal includes：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 determines that such as preliminary filling oil pressure value Pp is the value between 150～180KPa by demarcating.
Step 102：In the first setting time section, continue to export precharge pressure value to the double-clutch speed changer.
It should be noted that the first setting time section T1 as shown in Figure 3 is determined by gear box control unit by demarcating, than
Such as, the first setting time section T1 is the value between 250ms～400ms；Precharge pressure value is by gear box control unit by demarcating
It is determined that, precharge pressure value Pf as shown in Figure 3, such as, precharge pressure value Pf is the value between 350～560KPa.
Step 103：Obtain the actual pressure of the double-clutch speed changer.
Specifically, can by being placed on double-clutch speed changer in pressure sensor Real-time Collection double-clutch speed changer
Actual pressure.
Step 104：Detect the actual pressure whether more than the first setup pressure value；If it is, execution step 105；It is no
Then, execution step 106.
Specifically, the first setup pressure value can be as shown in Figure 3 semi-linkage pressure Pk determines, 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
By demarcating what is determined, such as, the value of semi-linkage pressure Pk is the value between 200～300KPa to case control unit.
Step 105：Precharge pressure, execution step are exported according to first pressure control mode to the double-clutch speed changer
106。
Specifically, the first pressure control mode includes：Make to the double-clutch speed changer output precharge pressure by
According to the first descending slope value changes.As shown in figure 3, changing according to the first descending slope Pg1.
It should be noted that the first descending slope Pg1 can determine that such as, the first descending slope Pg1 exists by demarcating
Value between 300～100KPa/s.
Step 106：Detect whether the actual pressure is equal to the second setup pressure value；If it is, execution step 107；It is no
Then, execution step 105 is returned.
Step 107：Terminate.
The oil-filled control method of wet dual clutch transmission provided in an embodiment of the present invention, clutch as shown in Figure 3 is expected
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 pressure of the double-clutch speed changer reality 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, in the pre-oiling stage, continues to double
Clutch speed changer exports preliminary filling oil pressure value；After the pre-oiling stage terminates, in the first setting time section, continue to it is described it is double from
Speed changer output precharge pressure value is closed, after the first setting time section terminates, is 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；By the present invention, the precise control to double-clutch speed changer is realized.
Further, in order to preferably make gear box control unit grasp double clutch actual pressure, as shown in Figure 4
It is another kind of flow chart of the oil-filled control method of embodiment of the present invention double-clutch speed changer, including step：
Step 201：In the pre-oiling stage, continue to export preliminary filling oil pressure value to double-clutch speed changer.
Step 202：In the first setting time section, continue to export precharge pressure value to the double-clutch speed changer.
Step 203：Obtain the actual pressure of the double-clutch speed changer.
Step 204：Detect the actual pressure whether less than the first setup pressure value；If it is, execution step 205；It is no
Then, execution step 210.
Step 205：Precharge pressure, execution step are exported according to second pressure control mode to the double-clutch speed changer
206。
Specifically, the second pressure control mode includes：Make to the double-clutch speed changer output precharge pressure by
According to the second descending slope value changes.As shown in figure 4, changing according to the second descending slope Pg2.
It should be noted that the second descending slope Pg2 can determine that such as, the second descending slope Pg2 exists by demarcating
Value between 500～1500KPa/s.
Step 206：Whether detection actual pressure is equal to first setup pressure value；If it is, execution step 207；It is no
Then, execution step 205 is returned.
Step 207：Precharge pressure, execution step are exported according to first pressure control mode to the double-clutch speed changer
208。
Specifically, first setup pressure value is the 80% of second setup pressure value.
Specifically, the second setup pressure value is the semi-linkage pressure Pk shown in Fig. 4, and semi-linkage pressure Pk is gearbox control
By demarcating what is determined, first setup pressure value is the 80% of second setup pressure value, such as, semi-linkage to unit processed
The value of pressure Pk is the value between 200～300KPa, then the first setup pressure value is the value between 160～240KPa.
Step 208：Whether detection actual pressure is equal to second setup pressure value；If it is, execution step 209；It is no
Then, execution step 207 is returned.
Step 209：Terminate.
Step 210：Whether detection actual pressure is more than or equal to the second setup pressure value；If it is, execution step 211；
Otherwise, execution step 207 is returned.
Step 211：The second setup pressure value, execution step 209 are exported to double-clutch speed changer.
The oil-filled control method of wet dual clutch transmission provided in an embodiment of the present invention, in detection actual pressure first is more than
The basis of setup pressure value, further detects whether actual pressure is less than the second setting value, if less than the second setting value, then presses
Precharge pressure is exported to double-clutch speed changer according to second pressure control mode, otherwise, is set to double-clutch speed changer output second
Pressure value.By the present invention, gear box control unit is set to have carried out more accurately grasping to double clutch actual pressure, it is accurate
Control to double-clutch speed changer.
Because the control mode of the enforcement of the present invention is opened loop control, in order to ensure the accurate of double-clutch speed changer pressure
Property, in an alternative embodiment of the invention, after second setup pressure value is exported to the dual-clutch transmission, also
PI controls can be carried out to the precharge pressure exported to the dual-clutch transmission, 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
Cross demarcation to determine, such as, steady-state error value is ± 0.5KPa.
The embodiment of the present invention is described in detail with reference to Fig. 5：
The first step：The pre-oiling stage (i.e. pre-charging time Tp stage in Fig. 3).
When clutch pressure is 0Kpa, there is air during clutch cavity body is interior, the oil-filled control of clutch is unstable, because
This, sets up in advance a part of oil pressure (preliminary filling oil pressure value Pp), it is to avoid have air in clutch cavity body in clutch, it is ensured that
Oil-filled stability.From the oil-filled pressure differential ratios to semi-linkage pressure Pf (the second setup pressure value) of preliminary filling oil pressure value Pp from 0Kpa
The oil-filled pressure differential to semi-linkage point is little, can accelerate the oil-filled time.
This pre-oiling stage is opened loop control, and gear box control unit arranges preliminary filling oil pressure value Pp, the pre-oiling stage from
Clutch actual pressure curve Pa more rises with clutch desired pressure curve Pd, when pre-charging time Tp is reached, pre-oiling control
Process processed terminates.
Second step：The oil-filled first control stage
After the pre-oiling stage terminates, the close preliminary filling oil pressure Pp of clutch actual pressure curve Pa, clutch expects pressure
Force curve Pd reaches precharge pressure value Pf, because now precharge pressure value Pf is more than the pressure value of actual pressure curve Pa, clutch
Device actual pressure curve Pa starts to raise from preliminary filling oil pressure Pp.The stage control belongs to opened loop control, when reaching oil-filled first
During setting time T1, the oil-filled first control stage terminates.
3rd step：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
Connection pressure Pk is much larger for clutch half, before close clutch semi-linkage pressure Pk, clutch when combining in order to avoid clutch
Actual pressure Pa overshoot is impacted, and is now controlled using oil-filled falling pressure two-part.
The first descending slope Pg1 and the second descending slope Pg2 is respectively provided with, wherein the second descending slope Pg2 is more than first
Descending slope Pg1, by the second descending slope Pg2 clutch is first quickly slowed down, and the actual pressure rate of climb declines by first
Slope Pg1 then further slows down the clutch actual pressure curve Pa rates of climb, when clutch actual pressure curve Pa be close to from
Near clutch semi-linkage pressure Pk, oil-filled control terminates.
4th step：PI items are controlled
After oil-filled second stage terminates, whole oil-filled control terminates, because control above is opened loop control, clutch
Actual pressure Pa is not stable near clutch semi-linkage pressure Pk.In order to ensure the accuracy of clutch pressure control,
Increased the control of PI items.
Correspondingly, present invention also offers a kind of oil-filled control system of wet dual clutch transmission, including：Gearbox is controlled
Unit and the double-clutch speed changer electrically connected with the gearbox；Characterized in that, in pre-oiling stage, the gearbox control
Unit processed continues to export preliminary filling oil pressure value to double-clutch speed changer；After the pre-oiling stage terminates, the gear box control unit exists
Precharge pressure value is persistently exported in first setting time to the double-clutch speed changer；After the first setting time section terminates, institute
State gear box control unit and obtain the actual pressure of the double-clutch speed changer, and detect the actual pressure whether more than first
Setup pressure value, if it is, precharge pressure is exported to the double-clutch speed changer according to first pressure control mode, until described
Actual pressure is equal to second setup pressure value.
Specifically, in the embodiment of the present invention, the first pressure control mode includes：
Make to the double-clutch speed changer output precharge pressure according to the first descending slope value changes.As shown in figure 3, can
To change according to the first descending slope Pg1, and the first descending slope Pg1 is determined by gear box control unit by demarcating, such as,
Values 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 according to second pressure control mode to the double-clutch speed changer, 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 according to first pressure control mode to the double-clutch speed changer, 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：
Make to the double-clutch speed changer output precharge pressure according to the second descending slope value changes.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 gear box control unit by demarcating,
Such as, values 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 the semi-linkage pressure Pk shown in Fig. 3 or Fig. 5, and semi-linkage pressure Pk to be gear box control unit determined by demarcating
, such as, 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, press more than or equal to the described second setting when the actual pressure is detected
During force value, the gear box control unit to the double-clutch speed changer exports second setup pressure value.
Further, in present system another embodiment, to dual-clutch transmission output described second
After setup pressure value, the gear box control unit can also be carried out to the precharge pressure of dual-clutch transmission output
PI is controlled, so that the actual pressure is less than steady-state error value with the difference of second setup pressure value.It should be noted that
The steady-state error value is determined that such as, steady-state error value is ± 0.5KPa by gear box control unit by demarcating.
In sum, the oil-filled control system of wet dual clutch transmission provided in an embodiment of the present invention, by pre-oiling and
PI items control at the end of oil-filled reaches semi-linkage point being accurately controlled clutch pressure, realizes to double-clutch speed changer
Precise control.
The embodiment of the present invention is described in detail above, specific embodiment used herein is carried out to the present invention
Illustrate, the explanation of above example is only intended to help understand system and method for the invention；Simultaneously for the one of this area
As technical staff, according to the present invention thought, will change in specific embodiments and applications, to sum up institute
State, this specification content should not be construed as limiting the invention.
Claims (10)
1. the oil-filled control method of a kind of wet dual clutch transmission, it is characterised in that methods described includes：
In the pre-oiling stage, continue to export preliminary filling oil pressure value to double-clutch speed changer；
After the pre-oiling stage terminates, in the first setting time section, continue to export precharge pressure value to the double-clutch speed changer；
After first setting time section terminates, the actual pressure of the double-clutch speed changer is obtained, and detect that the actual pressure is
It is no to be more than the first setup pressure value, if it is, 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 the described second setting
Pressure value.
2. the oil-filled control method of wet dual clutch transmission according to claim 1, it is characterised in that methods described is also wrapped
Include：
If detecting the actual pressure 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 to described pair of clutch according to first pressure control mode
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, it is characterised in that methods described is also wrapped
Include：
It is defeated to the double-clutch speed changer if detecting the actual pressure more than or equal to second setup pressure value
Go out second setup pressure value.
4. the oil-filled control method of wet dual clutch transmission according to claim 3, it is characterised in that methods described is also wrapped
Include：
After the actual pressure is equal to second setup pressure value, the oil-filled pressure to dual-clutch transmission output
Power carries out PI controls, so that the actual pressure is less than steady-state error value with the difference of second setup pressure value.
5. the oil-filled control method of wet dual clutch transmission according to any one of claim 1-4, it is characterised in that described
First pressure control mode includes：
Make to the double-clutch speed changer output precharge pressure according to the first descending slope value changes.
6. the oil-filled control method of wet dual clutch transmission according to claim 5, it is characterised in that the second pressure
Control mode includes：
Make to the double-clutch speed changer output precharge pressure according to the second descending slope value changes.
7. the oil-filled control method of wet dual clutch transmission according to claim 6, it is characterised in that first setting
Pressure value is the 80% of second setup pressure value.
8. the oil-filled control system of a kind of wet dual clutch transmission, including：Gear box control unit and with the gearbox electricity
The double-clutch speed changer of connection；Characterized in that, in the pre-oiling stage, the gear box control unit continues to double clutch speed-changings
Device exports preliminary filling oil pressure value；After the pre-oiling stage terminates, the gear box control unit is in the first setting time to described pair
Clutch speed changer persistently exports precharge pressure value；After the first setting time section terminates, the gear box control unit obtains institute
The actual pressure of double-clutch speed changer is stated, and whether detects the actual pressure more than the first setup pressure value, if it is, according to
First pressure control mode to the double-clutch speed changer exports precharge pressure, until the actual pressure sets equal to described second
Level pressure force value.
9. the oil-filled control system of wet dual clutch transmission according to claim 8, it is characterised in that when the actual pressure
Power be less than first setup pressure value, then the gear box control unit according to second pressure control mode to described pair of 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, the gear box control unit is according to first pressure control
Mode to the double-clutch speed changer exports precharge pressure, 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, it is characterised 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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| Application Number | Priority Date | Filing Date | Title |
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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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| CN106641238B CN106641238B (en) | 2019-02-19 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112098075A (en) * | 2020-09-14 | 2020-12-18 | 广州汽车集团股份有限公司 | Oil filling test method and device for synchronizer and rack test system |
| CN113339423A (en) * | 2021-05-31 | 2021-09-03 | 重庆青山工业有限责任公司 | Method for preventing output pressure of wet DCT clutch from being overlarge |
| CN115574015A (en) * | 2022-09-26 | 2023-01-06 | 重庆长安汽车股份有限公司 | Wet-type double-clutch oil filling control method and system, electronic equipment and vehicle |
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| CN112098075A (en) * | 2020-09-14 | 2020-12-18 | 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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| CN113339423A (en) * | 2021-05-31 | 2021-09-03 | 重庆青山工业有限责任公司 | Method for preventing output pressure of wet DCT clutch from being overlarge |
| CN113339423B (en) * | 2021-05-31 | 2023-04-07 | 重庆青山工业有限责任公司 | Method for preventing output pressure of wet DCT (dual clutch transmission) clutch from being overlarge |
| CN115574015A (en) * | 2022-09-26 | 2023-01-06 | 重庆长安汽车股份有限公司 | Wet-type double-clutch oil filling control method and system, electronic equipment and vehicle |
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