CN111810626A - Hydraulic control system of dual clutch transmission - Google Patents
Hydraulic control system of dual clutch transmission Download PDFInfo
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- CN111810626A CN111810626A CN202010646756.9A CN202010646756A CN111810626A CN 111810626 A CN111810626 A CN 111810626A CN 202010646756 A CN202010646756 A CN 202010646756A CN 111810626 A CN111810626 A CN 111810626A
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- interface
- main oil
- valve
- oil supply
- control system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0262—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being hydraulic
- F16H61/0265—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being hydraulic for gearshift control, e.g. control functions for performing shifting or generation of shift signals
- F16H61/0267—Layout of hydraulic control circuits, e.g. arrangement of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0262—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being hydraulic
- F16H61/0276—Elements specially adapted for hydraulic control units, e.g. valves
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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
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/86—Control during or prevention of abnormal conditions
- F15B2211/863—Control during or prevention of abnormal conditions the abnormal condition being a hydraulic or pneumatic failure
- F15B2211/8636—Circuit failure, e.g. valve or hose failure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/875—Control measures for coping with failures
- F15B2211/8752—Emergency operation mode, e.g. fail-safe operation mode
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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
- F16H2061/0046—Details of fluid supply channels, e.g. within shafts, for supplying friction devices or transmission actuators with control fluid
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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
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
- F16H2061/1224—Adapting to failures or work around with other constraints, e.g. circumvention by avoiding use of failed parts
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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
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
- F16H2061/1232—Bringing the control into a predefined state, e.g. giving priority to particular actuators or gear ratios
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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
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
- F16H2061/1256—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures characterised by the parts or units where malfunctioning was assumed or detected
- F16H2061/126—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures characterised by the parts or units where malfunctioning was assumed or detected the failing part is the controller
- F16H2061/1264—Hydraulic parts of the controller, e.g. a sticking valve or clogged channel
Abstract
The invention belongs to the technical field of automobile transmissions, and discloses a hydraulic control system of a double-clutch transmission, which comprises: the oil supply device is provided with a first oil supply branch and a second oil supply branch which are connected in parallel, and the first oil supply branch is connected with the main oil pressure pipeline; the gear selection device and the clutch control device are connected in parallel with a main oil pressure pipeline, and a pressure sensor is arranged between the main oil pressure pipeline and the gear selection device; the main oil pressure regulating valve is provided with a first interface, a second interface and a third interface, the first interface is communicated to the oil supply device through a second oil supply branch, the second interface is communicated to the gear selection device, the third interface is connected with the oil tank, and the main oil pressure regulating valve selectively closes the second interface and/or the third interface according to a pressure signal of the pressure sensor. When the gear shifting pressure regulating valve fails, the first interface is communicated with the second interface, hydraulic oil provided by the oil supply device enters the gear selection device, and the gear selection device activates corresponding gears according to gear requirements to realize an emergency gear shifting function.
Description
Technical Field
The invention relates to the technical field of automobile transmissions, in particular to a hydraulic control system of a double-clutch transmission.
Background
Most of the double-clutch automatic transmissions adopt hydraulic control for gear shifting operation, in order to realize accurate gear shifting control and reduce gear shifting impact, most of the hydraulic control systems adopt a scheme of controlling gear shifting pressure by a single pressure regulating valve and controlling gear shifting speed by a plurality of flow regulating valves, and if the pressure regulating valves fail in the using process, the gear shifting function of the transmission is lost; and a mode of additionally arranging a safety valve is also adopted in some schemes, so that emergency gear shifting of partial gears can be realized, the power gear shifting function of the transmission is lost (partial gear shifting function is lost), and meanwhile, the cost is increased and the structure size is increased due to the additionally arranged safety valve.
Disclosure of Invention
The invention aims to provide a hydraulic control system of a dual-clutch transmission, which aims to solve the problem that the gear shifting function of the transmission is partially or completely lost due to the failure of a gear shifting pressure regulating valve.
In order to achieve the purpose, the invention adopts the following technical scheme:
a hydraulic control system for a dual clutch transmission, comprising:
the oil supply device is provided with a first oil supply branch and a second oil supply branch which are connected in parallel, and the first oil supply branch is connected with the main oil pressure pipeline;
the gear selection device and the clutch control device are connected with the main oil pressure pipeline in parallel, and a pressure sensor is arranged between the main oil pressure pipeline and the gear selection device;
the main oil pressure regulating valve is provided with a first interface, a second interface and a third interface, the first interface is communicated to the oil supply device through the second oil supply branch, the second interface is communicated to the gear selection device, the third interface is connected with an oil tank, and the main oil pressure regulating valve selectively closes the second interface and/or the third interface according to a pressure signal of the pressure sensor.
When the gear shifting pressure regulating valve fails, the first interface and the second interface of the main oil pressure regulating valve are regulated to be communicated, hydraulic oil provided by the oil supply device enters the gear selection device through the second oil supply branch and the main oil pressure regulating valve, and the gear selection device activates corresponding gears according to gear requirements to realize an emergency gear shifting function.
Preferably, a check valve is provided between the first oil supply branch and the main oil pressure pipe.
Preferably, an end of the main oil pressure line remote from the check valve is connected in parallel:
the clutch control device is connected with the main oil pressure pipeline through the main oil way first branch;
the main oil path second branch is connected with the pressure sensor;
the third branch of the main oil path is sequentially connected with a gear shifting pressure regulating valve and the gear selecting device;
and the fourth branch of the main oil way is connected with the energy accumulator.
Preferably, the second port is connected to the gear selection device via a second shift pressure line and a gear selection device supply hydraulic line in sequence.
Preferably, the main oil pressure regulating valve is a cylinder, and a first valve face and a second valve face are respectively arranged at two axial ends of the main oil pressure regulating valve, the first valve face is subjected to thrust in a first direction, and the second valve face is subjected to elastic force in a second direction;
the first direction and the second direction are opposite and both parallel to the axial direction.
Preferably, the second interface acts on the second valve face via a feedback loop.
Preferably, the first valve face is provided with an electromagnet, and the electromagnet is in signal connection with the pressure sensor.
Preferably, a pilot solenoid valve is provided on the first valve face.
The invention has the beneficial effects that: when the gear shifting pressure regulating valve fails, the first interface and the second interface of the main oil pressure regulating valve are regulated to be communicated, hydraulic oil provided by the oil supply device enters the gear selection device through the second oil supply branch and the main oil pressure regulating valve, and the gear selection device activates corresponding gears according to gear requirements to realize an emergency gear shifting function.
Drawings
FIG. 1 is a connection diagram of a hydraulic control system of a dual clutch transmission according to a first embodiment of the present application;
FIG. 2 is a schematic diagram of a main oil pressure regulator valve of a hydraulic control system of a dual clutch transmission according to a first embodiment of the present application;
fig. 3 is a connection diagram of a hydraulic control system of a dual clutch transmission according to a second embodiment of the present invention.
In the figure:
1-an oil supply device; 2-main oil pressure regulating valve; 3-a one-way valve; 4-an accumulator; 5-a pressure sensor; 6-shift pressure regulating valve; 7-gear selection means; 8-clutch control means; 9-a first interface; 10-a second interface; 11-a third interface; 12-a fuel tank; 13-a first valve face; 14-a second valve face; 15-an electromagnet; 16-a spring; 17-oil supply hydraulic line; 18-main oil pressure line; 19-gear selection means feed hydraulic circuit; 20-a feedback loop; 21-a first oil supply branch; 22-a second oil supply branch; 23-main oil way first branch; 24-main oil path second branch; 25-main oil way third branch; 26-main oil way fourth branch; 27-a first shift pressure line; 28-second shift pressure line; 29-pilot solenoid valve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The first embodiment is as follows:
fig. 1 is a connection diagram of a hydraulic control system of a dual clutch transmission of the present embodiment, and fig. 2 is a schematic diagram of a main oil pressure regulator valve.
The hydraulic control system of the dual clutch transmission includes: the hydraulic control system comprises an oil supply device 1, a main oil pressure regulating valve 2, a one-way valve 3, an energy accumulator 4, a pressure sensor 5, a gear shifting pressure regulating valve 6, a gear selecting device 7 and a clutch control device 8.
The main oil pressure regulating valve 2 is constructed as a three-position three-way valve, the first connector 9 is connected with the oil supply device 1 through a second oil supply branch 22 and an oil supply hydraulic pipeline 17, the second connector 10 is connected with the gear selection device 7 through a second gear shifting pressure pipeline 28 and a gear selection device supply hydraulic pipeline 19, and the third connector 11 is communicated with the oil tank 12.
The main oil pressure regulating valve 2 is a cylinder, and a first valve face 13 and a second valve face 14 are respectively arranged at two axial ends of the main oil pressure regulating valve, the first valve face 13 receives thrust in a first direction (rightward in the figure 2), and the second valve face 14 receives elastic force in a second direction (leftward in the figure 2).
In the present exemplary embodiment, the first valve face 13 interacts with an electromagnet 15 and the second valve face 14 interacts with a spring 16.
Preferably, the second interface 10 acts on the second valve face 14 via a feedback loop 20.
When the pressure sensor 5 detects that the oil pressure of the main oil pressure pipeline 18 is lower than a first set value, the main oil pressure regulating valve 2 is in the middle position by applying a first current range to the electromagnet 15, at this time, the first connector 9, the second connector 10 and the third connector 11 are all cut off, and the hydraulic oil provided by the oil supply device 1 enters the main oil pressure pipeline 18 through the oil supply hydraulic pipeline 17, the first oil supply branch 21 and the check valve 3. Then flows into the clutch control device 8 through the main oil path first branch path 23, and the clutch connection/separation control is realized according to the control requirement; flows into the pressure sensor 5 through the main oil passage second branch passage 24; the oil flows to the gear shifting pressure regulating valve 6 through the third branch 25 of the main oil way, and gear shifting is further realized by controlling the gear shifting pressure regulating valve 6 and the gear selecting device 7 according to gear requirements; flows into the accumulator 4 through the fourth branch 26 of the main oil passage, stores a certain volume of oil in the accumulator 4, and simultaneously, due to the increased volume of oil, causes the pre-charge gas in the accumulator 4 to be compressed, thereby increasing the pressure of the main oil pressure line 18.
When the pressure sensor 5 detects that the oil pressure of the main oil pressure pipeline 18 is higher than the second set value, the first current range applied to the electromagnet 15 is removed, so that the main oil pressure regulating valve 2 is in the right position shown in the figure, at this time, the first port 9 is communicated with the third port 11, the hydraulic oil supplied by the oil supply device 1 flows into the oil tank 12 through the oil supply hydraulic pipeline 17, the second oil supply branch 22 and the main oil pressure regulating valve 2, and meanwhile, because the pressure of the check valve 3 on the side of the main oil pressure pipeline 18 is higher than the pressure on the side of the oil supply hydraulic pipeline 17, the check valve 3 is closed, that is, the oil supply device 1 does not supply oil to the main oil pressure pipeline 18 any more, on one hand, the outlet pressure of the oil supply device 1 is reduced (close to zero), so that the power loss is reduced, and on the other hand, the pressure of the main oil pressure pipeline.
It should be noted that another pressure sensor may be provided between the clutch control device 8 and the main oil pressure line 18. The invention is not limited thereto.
When the clutch control or the shift operation is performed several times, the amount of the hydraulic oil stored in the accumulator 4 is reduced, so that the oil pressure of the main oil pressure line 18 is lower than the first set value, and at this time, the first current range is applied to the electromagnet 15, so that the main oil pressure regulating valve 2 is in the intermediate position, and so on.
During a gear shift under normal conditions (with the shifting pressure regulating valve 6 in effect), a certain current is applied to the shifting pressure regulating valve 6 according to the shifting pressure requirement, at the moment, hydraulic oil enters the gear selection device 7 through the shifting pressure regulating valve 6, the first shifting pressure pipeline 27 and the gear selection device supply hydraulic pipeline 19, and the gear selection device 7 activates a corresponding gear according to the gear requirement.
When the shifting pressure regulating valve 6 fails, the shifting pressure regulating valve 6 cuts off the third branch 25 of the main oil path from the first shifting pressure pipeline 27, the third branch 25 of the main oil path cannot provide hydraulic oil for the gear selecting device 7, and the shifting operation cannot be performed, and at this time, the main oil pressure regulating valve is in the left position by applying the second current range to the main oil pressure regulating valve 2, and the emergency shifting function is activated. At this time, the first interface 9 is communicated with the second interface 10, the hydraulic oil provided by the oil supply device 1 enters the gear selection device 7 through the oil supply hydraulic pipeline 17, the second oil supply branch 22, the main oil pressure regulating valve 2, the second gear shifting pressure pipeline 28 and the gear selection device supply hydraulic pipeline 19, and the gear selection device 7 activates a corresponding gear according to a gear requirement, so that an emergency gear shifting function is realized. Advantageously, since the second shift pressure line 28 acts on the second valve face 14 via the feedback circuit 20, it is possible to achieve an adjustment of the oil pressure of the second shift pressure line 28 by selecting different current values within the second current range, in order to avoid damaging elements or shifting shocks.
Example two:
fig. 3 is a connection diagram of a hydraulic control system of a dual clutch transmission according to a second embodiment of the present invention. The difference from the first embodiment is that the main oil pressure regulating valve 2 is controlled by a pilot solenoid valve 29. The pilot solenoid valve 29 is preferably a proportional pressure regulator valve, and the output oil pressure of the pilot solenoid valve 29 (i.e., the magnitude of the force acting on the first land 13) can be adjusted by adjusting the magnitude of the current input to the pilot solenoid valve 29, so that the main oil pressure regulator valve 2 can be placed at the right position, the intermediate position, or the left position as required, or the oil pressure of the second shift pressure line 28 can be adjusted when the main oil pressure regulator valve 2 is placed at the left position.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (8)
1. A hydraulic control system for a dual clutch transmission, comprising:
the oil supply device (1) is provided with a first oil supply branch (21) and a second oil supply branch (22) which are connected in parallel, and the first oil supply branch (21) is connected with the main oil pressure pipeline (18);
the gear selecting device (7) and the clutch control device (8) are connected with the main oil pressure pipeline (18) in parallel, and a pressure sensor (5) is arranged between the main oil pressure pipeline (18) and the gear selecting device (7);
the main oil pressure regulating valve (2) is provided with a first interface (9), a second interface (10) and a third interface (11), the first interface (9) is communicated to the oil supply device (1) through the second oil supply branch (22), the second interface (10) is communicated to the gear selection device (7), the third interface (11) is connected with an oil tank (12), and the main oil pressure regulating valve (2) selectively closes the second interface (10) and/or the third interface (11) according to a pressure signal of the pressure sensor (5).
2. The hydraulic control system of a dual clutch transmission according to claim 1, characterized in that a check valve (3) is provided between the first oil supply branch (21) and the main oil pressure pipe (18).
3. The hydraulic control system of a dual clutch transmission according to claim 2, characterized in that one end of the main oil pressure conduit (18) remote from the check valve (3) is connected in parallel:
a main oil path first branch (23) through which the clutch control device (8) is connected to the main oil pressure pipe (18);
the main oil path second branch (24) is connected with the pressure sensor (5);
a third branch (25) of the main oil path, which is sequentially connected with a gear shifting pressure regulating valve (6) and the gear selecting device (7);
and the fourth branch (26) of the main oil way is connected with the energy accumulator (4).
4. Hydraulic control system of a dual clutch transmission according to claim 1, characterized in that the second interface (10) is connected to the gear selection device (7) in turn via a second shift pressure line (28), a gear selection device supply hydraulic line (19).
5. The hydraulic control system of a dual clutch transmission according to claim 1, wherein the main oil pressure regulating valve (2) is a cylinder and is provided with a first valve surface (13) and a second valve surface (14) at both ends in an axial direction thereof, the first valve surface (13) receives a thrust in a first direction, and the second valve surface (14) receives a spring force in a second direction;
the first direction and the second direction are opposite and both parallel to the axial direction.
6. Hydraulic control system of a dual clutch transmission according to claim 5, characterized in that the second interface (10) acts on the second valve face (14) via a feedback circuit (20).
7. Hydraulic control system of a dual clutch transmission according to claim 5, characterized in that the first valve face (13) is provided with an electromagnet (15), which electromagnet (15) is in signal connection with the pressure sensor (5).
8. Hydraulic control system of a dual clutch transmission according to claim 5, characterized in that the first valve face (13) is provided with a pilot solenoid valve (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010646756.9A CN111810626B (en) | 2020-07-07 | 2020-07-07 | Hydraulic control system of dual clutch transmission |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010646756.9A CN111810626B (en) | 2020-07-07 | 2020-07-07 | Hydraulic control system of dual clutch transmission |
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| CN111810626A true CN111810626A (en) | 2020-10-23 |
| CN111810626B CN111810626B (en) | 2022-06-10 |
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| CN202010646756.9A Active CN111810626B (en) | 2020-07-07 | 2020-07-07 | Hydraulic control system of dual clutch transmission |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114688246A (en) * | 2022-04-21 | 2022-07-01 | 河北工业大学 | Hydraulic gear shifting system of double-clutch transmission |
| CN114857256A (en) * | 2022-05-31 | 2022-08-05 | 重庆青山工业有限责任公司 | Hydraulic control system for electric control mechanical automatic transmission |
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| CN101255921A (en) * | 2007-01-23 | 2008-09-03 | 各特拉格·福特传动系统公司 | Hydraulic control device for automated double clutch transmission |
| DE102009005752A1 (en) * | 2009-01-23 | 2010-07-29 | Daimler Ag | Control device i.e. hydraulic control device, for dual clutch transmission of motor vehicle, has emergency slide, where pressure of gear actuation system acts as emergency-control pressure at emergency slide |
| CN102359586A (en) * | 2011-11-10 | 2012-02-22 | 安徽合力股份有限公司 | Proportional voltage regulation control system for automatic gearbox of forklift truck |
| CN104769335A (en) * | 2012-11-09 | 2015-07-08 | 大众汽车有限公司 | Hydraulic control device |
| CN104514875A (en) * | 2013-09-26 | 2015-04-15 | 大众汽车有限公司 | Hydraulic control device of dual clutch transmission |
| DE102018130820A1 (en) * | 2018-12-04 | 2020-06-04 | Schaeffler Technologies AG & Co. KG | Supply system and method for operating a supply system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114688246A (en) * | 2022-04-21 | 2022-07-01 | 河北工业大学 | Hydraulic gear shifting system of double-clutch transmission |
| CN114857256A (en) * | 2022-05-31 | 2022-08-05 | 重庆青山工业有限责任公司 | Hydraulic control system for electric control mechanical automatic transmission |
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