CN101915305A - Double-gain clutch control system - Google Patents
Double-gain clutch control system Download PDFInfo
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- CN101915305A CN101915305A CN2010101820438A CN201010182043A CN101915305A CN 101915305 A CN101915305 A CN 101915305A CN 2010101820438 A CN2010101820438 A CN 2010101820438A CN 201010182043 A CN201010182043 A CN 201010182043A CN 101915305 A CN101915305 A CN 101915305A
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- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The invention discloses a double-gain clutch control system of automobiles, which comprises a main pressure source, a variable electromagnetic valve, a clutch regulating valve, a gain control device and a cutch. The clutch is provided with a pressure oil chamber which is connected to the regulating valve oil outlet of the clutch regulating valve through a clutch pressure oil passage; the clutch regulating valve is connected to the main pressure source through an oil-supply oil passage; the gain control device comprises a pressure increasing valve, a trigger pressure oil passage, a clutch control oil passage, a gain control oil passage and an oil outlet, is connected to the clutch regulating valve through the clutch control oil passage and the gain control oil passage and controls the gain of a clutch control pressure according to the signals of the trigger pressure oil passage so that the clutch has a high gain for a high torque and has a low gain for a low torque. Therefore, the automatic gearbox has a high torque range at a low speed and has a better gear-shifting quality at a high speed.
Description
Technical field
The present invention relates to the clutch control in a kind of the automatic gearbox of vehicles system, particularly automatic gearbox of vehicles system, be used to control the clutch state of automatic transmission case clutch when carrying out gear ratio change.
Background technique
The automatic gearbox of vehicles system generally has a plurality of torque transmitting mechanisms, and promptly usually said clutch by the clutch action of clutch, changes the speed ratio of automatic transmission case.When the speed ratio of automatic transmission case was changed, described clutch had the process of skidding, the conversion that makes speed ratio steadily, along sliding.
Described clutch generally includes one by hydraulically powered piston, and the delivery pressure by a clutch modulating valve provides pressure to it.Described modulating valve is controlled the lifting of this pressure with a kind of control mode, guarantees the steady clutch action of clutch.And the level and smooth clutch action of clutch influences the shift quality of automatic transmission case to a great extent.Therefore, to the accurate control of clutch pressure, most important to shift quality.
When automobile at starting or low-grade location when travelling, the suffered resistance of automobile is bigger, the moment of torsion of automobile dynamic system output is also bigger, therefore, need bigger pilot pressure be arranged to clutch.Because electric liquid element as the narrow limitation of variable flow solenoid valve or proportional pressure control valve, need increase a high pressure multiple between Clutch Control pressure and actual clutch pressure, i.e. valve gain.The disengaging performance of clutch and the contradiction between the clutch pressure receptance are coordinated in the accurate control of clutch, the most difficult being.Bearing load is high more, need higher valve gain, and higher valve gain can make clutch become more responsive, more difficult control.Along with the market trend that the Engine torque scope constantly increases, this bad coordination result reduces the Clutch Control precision, thereby causes the gearshift degradation when hanging down moment of torsion.
The patent No. is US6591958, the invention people be Steven Patrick Moorman U.S. Patent Publication a kind of torque transmitting mechanisms pressure control device (Pressure Control Apparatus for Torque-Transmitting Mechanism), this pressure control device comprises a main inlet control valve, clutch modulating valve and a pressure charging valve, during gear shift, described clutch modulating valve control torque transfer mechanism pressure rises, and, after gear shift is finished, pressure charging valve improves the pressure from the modulating valve to the torque transmitting mechanisms effectively, make torque transmitting mechanisms that a high pressure be arranged, prevent to skid.This technological scheme adopts and provides a lower pilot pressure to torque transmitting mechanisms, improves shift quality, makes the clutch action of clutch reliable with higher keep-uping pressure then.But adopt this technological scheme,, all adopt the pressure build-up mode of a segmentation no matter clutch is at high moment of torsion or low moment of torsion.In fact, when automobile needs the Clutch Control pressure of a high gain during at high moment of torsion, and, need the Clutch Control pressure of a low gain to reduce the pressure sensibility that high gain is brought when automobile during at low moment of torsion, to guarantee the shift quality when the low moment of torsion.
Summary of the invention
The objective of the invention is to solve the contradiction of high pilot pressure of high moment of torsion and low moment of torsion pressure sensibility, improve the shift quality of automobile when hanging down moment of torsion for automatic gearbox of vehicles provides a kind of pair of gain automobile clutch control system.Conception of the present invention is, because clutch pressure receptance is the main cause of shift quality variation, at this moment, should manage when hanging down moment of torsion, to reduce the pilot pressure of clutch, the Clutch Control pressure of a low gain promptly is provided, reduces the pressure sensibility of clutch, thereby solve the shift quality of automobile when hanging down moment of torsion, and a high gain is provided, make clutch that a higher torque range be arranged when low speed.
Technical solution of the present invention is: two gain automobile clutch control system comprise principal pressure source, variable electromagnetic valve, clutch and regulating valve, gain control and clutch; Described clutch is provided with a pressure oil chamber, and it is connected to the modulating valve oil outlet of described clutch and regulating valve by a clutch pressure oil duct, and described clutch and regulating valve is connected to the principal pressure source by a fuel feeding oil duct; Described clutch and regulating valve pressure to described pressure oil chamber under the Clutch Control pressure control is controlled; Described gain control comprises pressure charging valve, triggers pressure oil duct, Clutch Control pressure oil duct, gain control oil duct and drain tap; It is connected with described clutch and regulating valve and according to the signal of described triggering pressure oil duct the gain of described Clutch Control pressure is controlled; When the pressure of described triggering pressure oil duct is lower than a preset pressure, described pressure charging valve makes described gain control oil duct be communicated with described Clutch Control pressure oil duct, thereby increase the pressure of described gain control oil duct, the described pressure that is connected the Clutch Control pressure oil duct on the modulating valve is carried out balance, make described clutch pressure oil duct be in a low gain state; When the pressure of described triggering pressure oil duct is higher than a preset pressure, described pressure charging valve makes described gain control oil duct disconnect with described Clutch Control pressure oil duct and is communicated with drain tap, thereby reduce the pressure of described gain control oil duct, increase the pressure ratio of described Clutch Control pressure oil duct and clutch pressure oil duct, make described clutch pressure oil duct be in a high gain state.
As a preferred embodiment of the present invention, described pressure charging valve comprises supercharging valve body, supercharging valve rod and pressure charging valve spring; In described supercharging valve body, be provided with pressure charging valve first undercut groove, pressure charging valve second undercut groove, pressure charging valve the 3rd undercut groove and pressure charging valve the 4th undercut groove, described pressure charging valve first undercut groove, pressure charging valve second undercut groove and pressure charging valve the 3rd undercut groove correspondence respectively are connected on described triggering pressure oil duct, Clutch Control pressure oil duct and the gain control oil duct, and described pressure charging valve the 4th undercut groove is communicated with drain tap; On described supercharging valve rod, be provided with pressure charging valve first shoulder and pressure charging valve second shoulder, between described pressure charging valve first shoulder and pressure charging valve second shoulder, be provided with a pressure charging valve annular groove; Described pressure charging valve spring is arranged in the described supercharging valve body and acts on the end face of described pressure charging valve second shoulder.When the pressure of described triggering pressure oil duct is lower than a preset pressure, increase that described gain control oil duct is communicated with described Clutch Control pressure oil duct and disconnect with described drain tap, described Clutch Control pressure produces a balance pressure by described gain control oil duct to the described Clutch Control pressure that acts on the described modulating valve, thereby reducing the principal pressure source advances the speed to the pressure of described clutch pressure oil duct, that is, make described clutch pressure oil duct be in a low gain state; When the pressure of described triggering pressure oil duct is higher than a preset pressure, described pressure charging valve makes described gain control oil duct disconnect with described Clutch Control pressure oil duct and is communicated with described drain tap, the equilibratory pressure of described Clutch Control pressure oil duct pressure is passed through the drain tap release, thereby increased the pressure ratio of described Clutch Control pressure oil duct and clutch pressure oil duct, accelerated of the pressure increase of principal pressure source to described clutch pressure oil duct, that is, make described clutch pressure oil duct be in a high gain state.
As a preferred embodiment of the present invention, described clutch and regulating valve comprises regulation valve body and regulates valve rod; On described adjusting valve rod, also be provided with modulating valve the 3rd shoulder and modulating valve the 4th shoulder; Described modulating valve the 3rd shoulder is adjacent with described modulating valve second shoulder and have an identical diameter; Described modulating valve the 4th shoulder is adjacent to described modulating valve the 3rd shoulder and have diameter greater than described modulating valve the 3rd shoulder; Adjacent at described modulating valve the 4th shoulder and modulating valve the 3rd shoulder forms a pressure reduction zone, described gain control oil duct and this regional connectivity.
As a preferred embodiment of the present invention, on described regulation valve body, also be provided with a pressure feedback undercut groove and pass through a pressure feedback oil duct and be communicated with described clutch pressure oil duct, when the pressure of described clutch pressure oil duct surpasses predefined value, regulate by this feedback oil duct and described modulating valve.
Description of drawings
Fig. 1 is hydraulic control circuit figure of the present invention.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Referring to Fig. 1, two gain automobile clutch control system comprise principal pressure source 1, variable electromagnetic valve 2, modulating valve 3, pressure charging valve 4 and clutch 5; Described clutch is provided with a pressure oil chamber 5a, and it is connected to the oil outlet of described modulating valve 3 by a clutch pressure oil duct 7, and described modulating valve 3 is connected to principal pressure source 1 by a fuel feeding oil duct 6; Described clutch and regulating valve 3 is controlled the pressure of described pressure oil chamber 5a under 8 controls of Clutch Control pressure.
Described clutch and regulating valve 3 comprises modulating valve valve body 3n, modulating valve valve rod 3o and modulating valve spring 3m, and described modulating valve valve body 3n is provided with the modulating valve valve opening, and described modulating valve valve rod 3o is engaged in the described modulating valve valve opening slidably; Described modulating valve valve rod 3o is provided with the modulating valve first shoulder 3a, the modulating valve second shoulder 3b, modulating valve the 3rd shoulder 3c and modulating valve the 4th shoulder 3d, be provided with the modulating valve first annular groove 3k between described modulating valve first shoulder 3a and the modulating valve second shoulder 3b, the described modulating valve second shoulder 3b, modulating valve the 3rd shoulder 3c are adjacent successively with modulating valve the 4th shoulder 3d; The described modulating valve first shoulder 3a, the modulating valve second shoulder 3b are identical with the diameter of modulating valve the 3rd shoulder 3c, all less than described modulating valve the 4th shoulder 3d.Form a pressure reduction zone 3l at described modulating valve the 3rd shoulder 3c and modulating valve the 4th shoulder 3d adjacent.Be provided with the modulating valve first undercut groove 3e, the modulating valve second undercut groove 3f, modulating valve the 3rd undercut groove 3g, modulating valve the 4th undercut groove 3h, modulating valve the 5th undercut groove 3i and modulating valve the 6th undercut groove 3j in the described modulating valve valve body 3n; On the described modulating valve first undercut groove 3e, be connected with fuel feeding oil duct 6, on the described modulating valve second undercut groove 3f, be connected with clutch pressure oil duct 7, on described modulating valve the 3rd undercut groove 3g, be connected with drain tap, on described modulating valve the 4th undercut groove 3h, be connected with gain control oil duct 9, on described modulating valve the 5th undercut groove 3i, be connected with Clutch Control pressure oil duct 8, on described modulating valve the 6th undercut groove 3j, be connected with pressure feedback oil duct 11.Described modulating valve spring 3m is arranged in the described modulating valve valve body 3n and acts on the end face of the described modulating valve first shoulder 3a, and this end face forms a modulating valve return 3p of grease chamber with described modulating valve valve body and is communicated with described modulating valve the 6th undercut groove 3j.
Described gain control comprises pressure charging valve 4, triggers pressure oil duct 10, gain control oil duct 9 and Clutch Control pressure oil duct 8, and it is connected with described clutch and regulating valve 3 with Clutch Control pressure oil duct 8 by described gain control oil duct 9 and according to the signal of described triggering pressure oil duct 10 gain of described Clutch Control pressure is controlled.When described pressure charging valve 4 is lower than a preset pressure when the pressure of described triggering pressure oil duct 10, the pressure that increases described gain control oil duct 9 carries out balance to the described pressure that is connected the Clutch Control pressure oil duct 8 on the modulating valve 3, makes described clutch pressure oil duct 7 be in a low gain state; When described pressure charging valve 4 is higher than a preset pressure when the pressure of described triggering pressure oil duct 10, reduce the pressure of described gain control oil duct 9, increase the pressure ratio of described Clutch Control pressure oil duct 8 and clutch pressure oil duct 7, make described clutch pressure oil duct 7 be in a high gain state.
Described pressure charging valve 4 comprises supercharging valve body 4i, supercharging valve rod 4j and pressure charging valve spring 4h; In described supercharging valve body 4i, be provided with the pressure charging valve first undercut groove 4c, the pressure charging valve second undercut groove 4d, pressure charging valve the 3rd undercut groove 4e and pressure charging valve the 4th undercut groove 4f, the described pressure charging valve first undercut groove 4c, the pressure charging valve second undercut groove 4d and pressure charging valve the 3rd undercut groove 4e correspondence respectively are connected on described triggering pressure oil duct 10, Clutch Control pressure oil duct 8 and the gain control oil duct 9, and described pressure charging valve the 4th undercut groove 4f is communicated with drain tap; On described supercharging valve rod 4j, be provided with pressure charging valve first shoulder 4a and the pressure charging valve second shoulder 4b, between described pressure charging valve first shoulder 4a and the pressure charging valve second shoulder 4b, be provided with a pressure charging valve annular groove 4g; Described pressure charging valve spring 4h is arranged in the described supercharging valve body 4i and acts on the end face of the described pressure charging valve second shoulder 4b.
On described Clutch Control pressure oil duct 8, also be connected with proportional control valve 12 and variable electromagnetic valve 2, described variable electromagnetic valve 2 is controlled described Clutch Control pressure oil duct 8 upward pressures according to the signal of system, thereby the pressure by 3 couples of described clutch pressure 5a of grease chamber of described modulating valve is controlled, the gear switch when realizing the automobile power transmission.
Described modulating valve 3 is when original state, the pressure of described Clutch Control pressure oil duct 8 and described at modulating valve spring 3m with from the balance of making a concerted effort to keep of the feedback pressure of clutch pressure feedback oil duct 11, when described Clutch Control pressure 8 during greater than described make a concerted effort, described fuel feeding oil duct 6 is connected with described clutch pressure oil duct 7, and has different pressure climbing speeds according to the big or small degree of its open communication.
The pressure charging valve spring 4h and 10 pressure balances of described triggering pressure oil duct that are provided with in the described pressure charging valve valve body 4i have a thresholding predefined value, described Clutch Control pressure oil duct 8 is communicated with described gain control oil duct 9, because existence at described pressure reduction zone 3l, described pressure of coming by gain control oil duct 9 acts on the 3l of this pressure reduction zone, in fact reduced the described pressure that acts on the Clutch Control pressure oil duct 8 on described modulating valve the 4th shoulder 3d end face, this will reduce the pressure ratio of described clutch pressure oil duct 7 pressure and described Clutch Control pressure oil duct 8 pressure; And when the pressure of described triggering pressure oil duct 10 during greater than pressure charging valve spring 4h power, described supercharging valve rod 4j move to right (by direction as shown), described gain control oil duct 9 and described Clutch Control pressure oil duct 8 are disconnected, and be communicated with the drain tap of described pressure charging valve 4, thereby the pressure that acts on the described adjusting valve differential pressure zone 3l is reduced, also promptly in fact increased the pressure ratio of described clutch pressure oil duct 7 pressure and described Clutch Control pressure oil duct 8 pressure.
Specific embodiment is in order more to be expressly understood the present invention, not as a kind of restriction to right of the present invention, under the prerequisite that does not break away from aim of the present invention, various variations can be arranged, and all these will be included within the scope of this claim the conspicuous modification of described those skilled in the art.
Claims (4)
1. two gain automobile clutch control system comprise principal pressure source, variable electromagnetic valve, clutch and regulating valve and clutch; Described clutch is provided with a pressure oil chamber, and it is connected to the modulating valve oil outlet of described clutch and regulating valve by a clutch pressure oil duct, and described clutch and regulating valve is connected to the principal pressure source by a fuel feeding oil duct; Described clutch and regulating valve pressure to described pressure oil chamber under the Clutch Control pressure control is controlled; It is characterized in that: it also comprises a gain control, comprises pressure charging valve, triggers pressure oil duct, Clutch Control pressure oil duct, gain control oil duct and drain tap; It is connected with described clutch and regulating valve and according to the signal of described triggering pressure oil duct the gain of described Clutch Control pressure is controlled; When the pressure of described triggering pressure oil duct is lower than a preset pressure, described pressure charging valve makes described gain control oil duct be communicated with described Clutch Control pressure oil duct, thereby increase the pressure of described gain control oil duct, the described pressure that is connected the Clutch Control pressure oil duct on the modulating valve is carried out balance, make described clutch pressure oil duct be in a low gain state; When the pressure of described triggering pressure oil duct is higher than a preset pressure, described pressure charging valve makes described gain control oil duct disconnect with described Clutch Control pressure oil duct and is communicated with drain tap, thereby reduce the pressure of described gain control oil duct, increase the pressure ratio of described Clutch Control pressure oil duct and clutch pressure oil duct, make described clutch pressure oil duct be in a high gain state.
2. according to claim 1 pair of gain automobile clutch control system is characterized in that: described pressure charging valve comprises supercharging valve body, supercharging valve rod and pressure charging valve spring; In described supercharging valve body, be provided with pressure charging valve first undercut groove, pressure charging valve second undercut groove, pressure charging valve the 3rd undercut groove and pressure charging valve the 4th undercut groove, described pressure charging valve first undercut groove, pressure charging valve second undercut groove and pressure charging valve the 3rd undercut groove correspondence respectively are connected on described triggering pressure oil duct, Clutch Control pressure oil duct and the gain control oil duct, and described pressure charging valve the 4th undercut groove is communicated with drain tap; On described supercharging valve rod, be provided with pressure charging valve first shoulder and pressure charging valve second shoulder, between described pressure charging valve first shoulder and pressure charging valve second shoulder, be provided with a pressure charging valve annular groove; Described pressure charging valve spring is arranged in the described supercharging valve body and acts on the end face of described pressure charging valve second shoulder.
3. according to claim 1 pair of gain automobile clutch control system is characterized in that: described clutch and regulating valve comprises regulation valve body and regulates valve rod; On described adjusting valve rod, also be provided with modulating valve the 3rd shoulder and modulating valve the 4th shoulder; Described modulating valve the 3rd shoulder is adjacent with described modulating valve second shoulder and have an identical diameter; Described modulating valve the 4th shoulder is adjacent to described modulating valve the 3rd shoulder and have diameter greater than described modulating valve the 3rd shoulder; Adjacent at described modulating valve the 4th shoulder and modulating valve the 3rd shoulder forms a pressure reduction zone, described gain control oil duct and this regional connectivity.
4. according to claim 1 or 3 described pairs of gain automobile clutch control system, it is characterized in that: on described regulation valve body, also be provided with a pressure feedback undercut groove and also be communicated with described clutch pressure oil duct by a pressure feedback oil duct, when the pressure of described clutch pressure oil duct surpasses predefined value, regulate by this feedback oil duct and described modulating valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010182043 CN101915305B (en) | 2010-05-25 | 2010-05-25 | Double-gain clutch control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010182043 CN101915305B (en) | 2010-05-25 | 2010-05-25 | Double-gain clutch control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101915305A true CN101915305A (en) | 2010-12-15 |
| CN101915305B CN101915305B (en) | 2013-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010182043 Active CN101915305B (en) | 2010-05-25 | 2010-05-25 | Double-gain clutch control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912679A (en) * | 2013-01-03 | 2014-07-09 | 福特全球技术公司 | System for controlling hydraulic gain of transmission control element |
| CN110375007A (en) * | 2014-01-30 | 2019-10-25 | 博格华纳公司 | Double gain friction clutches |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4188839A (en) * | 1978-02-17 | 1980-02-19 | Toyota Jidosha Kogyo Kabushiki Kaisha | Throttling control valve and a system for controlling downshift timing of an automatic transmission for vehicles |
| JPH05296328A (en) * | 1992-04-20 | 1993-11-09 | Mazda Motor Corp | Control device of automatic transmission |
| US6591958B1 (en) * | 2002-03-07 | 2003-07-15 | General Motors Corporation | Pressure control apparatus for a torque-transmitting mechanism |
| CN1540189A (en) * | 2003-04-21 | 2004-10-27 | �����Զ�����ʽ���� | Fluid pressure control loop |
| CN101004217A (en) * | 2006-01-17 | 2007-07-25 | 通用汽车公司 | Apparatus and method for reducing engine load at stop |
-
2010
- 2010-05-25 CN CN 201010182043 patent/CN101915305B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4188839A (en) * | 1978-02-17 | 1980-02-19 | Toyota Jidosha Kogyo Kabushiki Kaisha | Throttling control valve and a system for controlling downshift timing of an automatic transmission for vehicles |
| JPH05296328A (en) * | 1992-04-20 | 1993-11-09 | Mazda Motor Corp | Control device of automatic transmission |
| US6591958B1 (en) * | 2002-03-07 | 2003-07-15 | General Motors Corporation | Pressure control apparatus for a torque-transmitting mechanism |
| CN1540189A (en) * | 2003-04-21 | 2004-10-27 | �����Զ�����ʽ���� | Fluid pressure control loop |
| CN101004217A (en) * | 2006-01-17 | 2007-07-25 | 通用汽车公司 | Apparatus and method for reducing engine load at stop |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912679A (en) * | 2013-01-03 | 2014-07-09 | 福特全球技术公司 | System for controlling hydraulic gain of transmission control element |
| CN103912679B (en) * | 2013-01-03 | 2017-12-15 | 福特全球技术公司 | The system for controlling the hydraulic pressure gain of transmission control element |
| CN110375007A (en) * | 2014-01-30 | 2019-10-25 | 博格华纳公司 | Double gain friction clutches |
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| Publication number | Publication date |
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| CN101915305B (en) | 2013-11-06 |
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