CN209856363U - Hydraulic control system with limp function and automatic gearbox using same - Google Patents
Hydraulic control system with limp function and automatic gearbox using same Download PDFInfo
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- CN209856363U CN209856363U CN201920583938.9U CN201920583938U CN209856363U CN 209856363 U CN209856363 U CN 209856363U CN 201920583938 U CN201920583938 U CN 201920583938U CN 209856363 U CN209856363 U CN 209856363U
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Abstract
The utility model discloses a take hydraulic control system of lame function and use its automatic gearbox, hydraulic control system comprises high-pressure oil circuit, control oil circuit, gear switching oil circuit, locking separation oil circuit, lubricated oil circuit. The switching of P/R/N/D gears is realized by controlling the switch states of 5 hydraulic actuators, wherein the D gear is divided into six gears D1/D2/D3/D4/D5/D6. The working state of each actuating mechanism is controlled by 1 electromagnetic valve respectively, wherein the electromagnetic valves for controlling the first clutch, the third brake, the fourth brake and the fifth clutch are proportional normally-closed valves, and the electromagnetic valve for controlling the second clutch is a proportional normally-open valve. The utility model discloses an automatic transmission gets into the lameness function when the trouble, can realize the reverse gear function promptly, still provides two preceding lameness gears, the effectual risk that has reduced the gearbox and damage, when making the vehicle break down, still can drive the maintenance place and maintain.
Description
Technical Field
The utility model relates to an automobile transmission, it is very much, relate to a novel hydraulic control system to and contain this hydraulic control system's 6 fast hydraulic automatic transmission of front-engine rear-drive.
Background
In addition to good power, fuel economy and emissions performance, consumer comfort and safety are also of concern for automobiles. The limping function is an important index for evaluating driving comfort and safety. The limp home mode of the automatic transmission is that when the automobile detects system or component faults, the safety of the automobile can be ensured, and the transmission has the driving capacity. The limp Home mode of the automatic transmission is that when a control module (TCU) of the automatic transmission judges that a vehicle is in a fault state and internal parts of the transmission are damaged or safety hazards related to the automatic transmission are caused, the automatic transmission is controlled to enter a protection state, namely, the limp Home mode is adopted. If the limp home mode is not provided, if no measures are taken after the malfunction occurs, damage may be caused to the transmission case, or a collision or a rollover accident due to emergency braking may occur.
Disclosure of Invention
The invention aims to provide a novel hydraulic control system which is suitable for a large-torque commercial vehicle and can realize a limping function, and a front-mounted rear-drive 6-speed hydraulic automatic gearbox applying the hydraulic control system.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a take hydraulic control system of limp function which characterized in that: it consists of a high-pressure oil path, a gear switching oil path, a locking separation oil path, a lubricating oil path and a hydraulic execution unit, the hydraulic execution unit realizes the switching of the P/R/N/D gears by controlling the switch states of the first hydraulic execution mechanism, the second hydraulic execution mechanism, the third hydraulic execution mechanism, the fourth hydraulic execution mechanism and the fifth hydraulic execution mechanism, wherein the gear D is divided into six gears D1/D2/D3/D4/D5/D6, the working state of each actuating mechanism is respectively controlled by one electromagnetic valve, the electromagnetic valves for controlling the first hydraulic actuating mechanism, the third hydraulic actuating mechanism, the fourth hydraulic actuating mechanism and the fifth hydraulic actuating mechanism are proportional normally-closed valves, the electromagnetic valve for controlling the second hydraulic actuating mechanism is a proportional normally-open valve, the normally-closed valve is powered off, a hydraulic oil way is closed, and the normally-open valve is powered off to enable the hydraulic oil way to be opened.
The limp home function of the hydraulic system is mainly realized by the interaction of the first clutch, the fourth brake and the fifth clutch.
The first hydraulic execution mechanism participating in the limp function is composed of a first clutch control valve small valve core 2, a first clutch control valve 3 and a first clutch 4, wherein the first clutch control valve small valve core 2 and the first clutch control valve 3 are installed in the same valve core hole, the first clutch control valve 3 is located on the inner side of the valve core hole, a spring is installed on the innermost side of the valve core hole, the first clutch control valve small valve core 2 is located on the outer side of the valve core hole, and the valve core is sealed by a plug on the outermost side.
The fourth hydraulic actuator participating in the limp function consists of a fourth brake reversing valve 5, a fourth brake control valve 6 and a fourth brake 9, wherein the fourth brake reversing valve 5 is installed in a single valve core hole, and the valve core is sealed by a plug at the outer side of the hole; the fourth brake control valve 6 is mounted in a separate valve core hole, the outside of which is closed by a plug.
The fifth hydraulic execution mechanism participating in the limp function consists of a fifth clutch feedback pressure control valve 7, a fifth clutch 8, a fifth clutch control valve small valve core 10 and a fifth clutch control valve 11, wherein the fifth clutch feedback pressure control valve 7 is installed in a single valve core hole and is positioned at the inner side of the valve core hole, a spring is installed at the outer side of the valve core, and the outermost side of the valve core is sealed by a plug; the small valve core 10 of the fifth clutch control valve and the fifth clutch control valve 11 are installed in the same valve core hole, the fifth clutch control valve 11 is located on the inner side of the valve core hole, a spring is installed on the innermost side of the valve core hole, the small valve core 10 of the fifth clutch control valve is located on the outer side of the valve core hole, and the valve core is sealed by a plug on the outermost side.
According to the automatic gearbox with the limp hydraulic control system, the control module (TCU) is powered off, all electromagnetic valves of the gearbox are not electrified, only the electromagnetic valve of the second clutch is powered off and supplies oil at the moment, so that the second clutch is in a working state, and front-driving and rear-driving are realized when all gears are two executing elements working together.
When the shift valve 1 of the automatic transmission is in the R-range position, at this time, pressure oil in the main oil path enters the rightmost side of the valve core chamber where the fourth brake control valve 6 is located through a channel formed by the valve core chamber where the shift valve 1 is located, so that the fourth brake control valve 6 moves leftwards, meanwhile, the fourth brake reversing valve 5 also moves rightmost side of the valve core chamber where the fourth brake reversing valve 5 is located, and the pressure oil enters the fourth brake 9 through the main oil path through the channel formed by the valve core chambers where the fourth brake control valve 6 and the fourth brake reversing valve 5 are located, so that the fourth brake 9 works normally.
When the gearbox is in a D gear and the gear is in a 1-3 gear, the fifth clutch feedback pressure control valve 7 moves to the rightmost side of the valve core cavity where the valve core is located under the action of spring force, the feedback pressure of the second clutch passes through a channel formed by the valve core cavity where the fifth clutch feedback pressure control valve 7 is located to enable the small valve core 2 of the first clutch control valve to move rightwards, the first clutch control valve 3 is pushed to move rightwards simultaneously, pressure oil of a main oil way enters a channel formed by the valve core cavity where the first clutch control valve 3 is located through a channel formed by the valve core cavity of the gear shifting valve 1 and enters the first clutch 4, and at the moment, the first clutch 4 works normally.
When the gearbox is in a D gear and the gears are in a 4-6 gear failure, pressure oil exists in the fifth clutch 8, the oil pressure of the fifth clutch 8 enables the fifth clutch feedback pressure control valve 7 to move to the leftmost side of a valve core cavity where the valve core is located under the action of spring force, the feedback pressure of the second clutch enables the small valve core 10 of the fifth clutch control valve to move rightwards through a channel formed by the valve core cavity where the fifth clutch feedback pressure control valve 7 is located, the fifth clutch control valve 11 is pushed to move rightwards simultaneously, the pressure oil of a main oil line enters the fifth clutch 8 through a channel formed by the valve core cavity of the shift valve 1 and a channel formed by the valve core cavity where the fifth clutch control valve 11 is located, and the fifth clutch works normally.
Has the advantages that: the novel hydraulic control system and the corresponding limp function can enable the automatic gearbox to enter the limp function when the automatic gearbox fails, namely the reverse gear function can be realized, and two forward limp gears are provided. The personal safety of passengers is fully considered, the gearbox can enter high-grade limping at a high-speed state, the condition that the change of the speed ratio is too large, the vehicle is out of control is prevented, and meanwhile, the risk of damage to the gearbox is effectively reduced. When the vehicle breaks down, the driver can still safely drive the vehicle to a maintenance place for maintenance.
Drawings
Fig. 1 is a schematic structural diagram of a hydraulic control system with a limp home function according to an embodiment of the invention.
Fig. 2 is a working diagram of a reverse limp home function of the hydraulic control system according to the embodiment of the invention.
FIG. 3 is a low range limp home function operating schematic of the hydraulic control system of an embodiment of the present invention.
Fig. 4 is a high-range limp home function operational diagram of the hydraulic control system of the embodiment of the present invention.
Detailed Description
The technical solution of the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.
The embodiment provides a hydraulic control system and a corresponding limp function, and the hydraulic control system is composed of a high-pressure oil way, a gear switching oil way, a locking separation oil way and a lubricating oil way. The switching of P/R/N/D gears is realized by controlling the switch states of 5 hydraulic actuators (a first clutch, a second clutch, a third brake, a fourth brake and a fifth clutch), wherein the D gear is divided into six gears D1/D2/D3/D4/D5/D6. The working state of each actuating mechanism is controlled by 1 electromagnetic valve respectively, wherein the electromagnetic valves for controlling the first clutch, the third brake, the fourth brake and the fifth clutch are proportional normally-closed valves, and the electromagnetic valve for controlling the second clutch is a proportional normally-open valve. The normally closed valve is powered off, the hydraulic oil way is closed, and the normally open valve is powered off, so that the hydraulic oil way is opened.
Under special working conditions, a control module (TCU) of the automatic gearbox is powered off, and all electromagnetic valves of the gearbox are not electrified. At this time, only the electromagnetic valve of the second clutch is powered off to supply oil, so that the second clutch is in a working state, and the gear positions of the front rear-drive hydraulic automatic gearbox provided by the embodiment can be realized when the front rear-drive hydraulic automatic gearbox are both two executing elements to work together. The hydraulic principle sketch for realizing the limp home function is shown in a figure 1, and the limp home function consists of a gear shifting valve 1, a first clutch control valve spool 2, a first clutch control valve 3, a first clutch control valve 4, a first clutch, a fourth brake reversing valve 5, a fourth brake control valve 6, a fifth clutch feedback pressure control valve 7, a fifth clutch 8, a fourth brake 9, a fifth clutch control valve spool 10 and a fifth clutch control valve 11.
The limp function of the hydraulic control system provided by the embodiment can be realized in 3 cases.
The first case is when the gearbox gear is in reverse-entering failure or when the reverse gear (R gear) is re-used after failure, as shown in the reverse limp function operating diagram of fig. 2.
The hydraulic assembly 1 gear shifting valve, the 5 fourth brake reversing valve, the 6 fourth brake control valve and the 9 fourth brake which participate in the work in the stage. When a 1 shift valve of the gearbox is in an R gear position, pressure oil (the pressure of the pressure is higher than the feedback pressure of a second clutch) in a main oil path enters the rightmost side of a valve core cavity where a 6 fourth brake control valve is located through a channel (shown in figure 2) formed by the valve core cavity where the 1 shift valve is located, the 6 fourth brake control valve is moved to the left, meanwhile, a 5 fourth brake reversing valve is moved to the rightmost side of the valve core cavity where the 5 fourth brake reversing valve is located, and the pressure oil enters a 9 fourth brake through the main oil path and channels formed by the valve core cavities where the 6 fourth brake control valve and the 5 fourth brake are located, so that the fourth brake works normally. At this time, the front-engine rear-drive 6-speed hydraulic automatic transmission of the embodiment is in the reverse gear, and when the shift valve 1 is in other gears except the R gear, the pressure oil in the main oil path cannot enter the fourth brake 9, and then the fourth brake 9 cannot work.
The second case is when the transmission gear goes into or after the 1-3 gear fault to reuse the forward gear (D gear), as shown in the low gear limp function operating diagram of fig. 3. When the front-engine rear-drive 6-speed hydraulic automatic gearbox is in the 1-3 gear, the fifth clutch does not work.
The hydraulic components participating in the work in the stage are a shift valve 1, a first clutch control valve small valve core 2, a first clutch control valve 3, a first clutch 4, a fifth clutch feedback pressure control valve 7, a fifth clutch 8, a fifth clutch control valve small valve core 10 and a fifth clutch control valve 11. When the gearbox is in a D gear and the gear is in a 1-3 gear, the 7 fifth clutch feedback pressure control valve moves to the rightmost side of the valve core cavity where the valve core is located under the action of spring force, the feedback pressure of the second clutch passes through a channel formed by the valve core cavity where the 7 fifth clutch feedback pressure control valve is located to enable the small valve core of the 2 first clutch control valve to move rightwards, the 3 first clutch control valve is pushed to move rightwards simultaneously, pressure oil of a main oil way enters the channel formed by the valve core cavity where the 3 first clutch control valve is located through the channel formed by the valve core cavity of the 1 shifting valve, the 4 first clutch enters the 4 first clutch, at the moment, the 4 first clutch works normally, and the gearbox of the embodiment enters the 3 gear.
The third situation is when the gearbox gear goes into fault in 4-6, as shown in the high-range limp function operating diagram of fig. 4. When the front-engine rear-drive 6-speed hydraulic automatic gearbox is in 4-6 gears, the fifth clutch works.
The hydraulic components participating in the work in the stage are a shift valve 1, a first clutch control valve small valve core 2, a first clutch control valve 3, a first clutch 4, a fifth clutch feedback pressure control valve 7, a fifth clutch 8, a fifth clutch control valve small valve core 10 and a fifth clutch control valve 11. When the gearbox is in a D gear and the gears enter a fault in 4-6 gears, pressure oil exists in the 8 fifth clutch, at the moment, the 8 fifth clutch oil pressure (the pressure is higher than the second clutch feedback pressure) enables the 7 fifth clutch feedback pressure control valve to move to the leftmost side of the valve core cavity where the valve core is located under the action of spring force, the feedback pressure of the second clutch enables the 10 fifth clutch control valve small valve core to move rightwards through a channel formed by the valve core cavity where the 7 fifth clutch feedback pressure control valve is located, the 11 fifth clutch control valve is pushed to move rightwards simultaneously, the pressure oil of the main oil line enters the channel formed by the valve core cavity of the 11 fifth clutch control valve through a channel formed by the valve core cavity of the 1 gear shifting valve and enters the 8 fifth clutch, at the moment, the 8 fifth clutch works normally, and the gearbox enters 5 gears.
The above embodiments are only for illustrating the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical scheme according to the technical idea proposed by the present invention falls within the protection scope of the present invention; the technology not related to the invention can be realized by the prior art.
Claims (8)
1. The utility model provides a take hydraulic control system of limp function which characterized in that: it consists of a high-pressure oil path, a gear switching oil path, a locking separation oil path, a lubricating oil path and a hydraulic execution unit, the hydraulic execution unit realizes the switching of the P/R/N/D gears by controlling the switch states of the first hydraulic execution mechanism, the second hydraulic execution mechanism, the third hydraulic execution mechanism, the fourth hydraulic execution mechanism and the fifth hydraulic execution mechanism, wherein the gear D is divided into six gears D1/D2/D3/D4/D5/D6, the working state of each actuating mechanism is respectively controlled by one electromagnetic valve, the electromagnetic valves for controlling the first hydraulic actuating mechanism, the third hydraulic actuating mechanism, the fourth hydraulic actuating mechanism and the fifth hydraulic actuating mechanism are proportional normally-closed valves, the electromagnetic valve for controlling the second hydraulic actuating mechanism is a proportional normally-open valve, the normally-closed valve is powered off, a hydraulic oil way is closed, and the normally-open valve is powered off to enable the hydraulic oil way to be opened.
2. The hydraulic control system with limp function of claim 1, wherein: the first hydraulic execution mechanism participating in the limp function is composed of a first clutch control valve small valve spool (2), a first clutch control valve (3) and a first clutch (4), wherein the first clutch control valve small valve spool (2) and the first clutch control valve (3) are installed in the same valve spool hole, the first clutch control valve (3) is located on the inner side of the valve spool hole, a spring is installed on the innermost side of the valve spool hole, the first clutch control valve small valve spool (2) is located on the outer side of the valve spool hole, and the outermost side of the first clutch control valve small valve spool (2) is sealed by a plug.
3. The hydraulic control system with limp function of claim 1, wherein:
the fourth hydraulic actuator participating in the limp function consists of a fourth brake reversing valve (5), a fourth brake control valve (6) and a fourth brake (9), wherein the fourth brake reversing valve (5) is installed in a single valve core hole, and the valve core is sealed by a plug on the outer side of the hole; the fourth brake control valve (6) is arranged in a single valve core hole, and the valve core is sealed by a plug at the outer side of the hole.
4. The hydraulic control system with limp function of claim 1, wherein:
the fifth hydraulic execution mechanism participating in the limp function consists of a fifth clutch feedback pressure control valve (7), a fifth clutch (8), a fifth clutch control valve small valve core (10) and a fifth clutch control valve (11), wherein the fifth clutch feedback pressure control valve (7) is installed in a single valve core hole and is positioned at the inner side of the valve core hole, a spring is installed at the outer side of the valve core, and the outermost side of the valve core is sealed by a plug; the small valve core (10) of the fifth clutch control valve and the fifth clutch control valve (11) are arranged in the same valve core hole, the fifth clutch control valve (11) is located on the inner side of the valve core hole, a spring is arranged on the innermost side of the valve core hole, the small valve core (10) of the fifth clutch control valve is located on the outer side of the valve core hole, and the valve core is sealed by a plug on the outermost side.
5. An automatic gearbox comprising a control module (TCU) and a gear shift valve (1), characterized in that: the hydraulic control system with limp function is used, the control module (TCU) is powered off, all electromagnetic valves of the gearbox are not electrified, only the electromagnetic valve of the second clutch is powered off, the second clutch is in a working state, and all gears are used for realizing front-driving and rear-driving when two executing elements work together.
6. The automatic transmission of claim 5, wherein:
when the shift valve (1) of the automatic gearbox is in the R gear position, pressure oil of a main oil path enters the rightmost side of a valve core cavity where the fourth brake control valve (6) is located through a channel formed by the valve core cavity where the shift valve (1) is located, the fourth brake control valve (6) moves leftwards, meanwhile, the fourth brake reversing valve (5) moves rightmost side of the valve core cavity where the fourth brake control valve is located, and the pressure oil enters the fourth brake (9) through the main oil path and the channel formed by the valve core cavity where the fourth brake control valve (6) and the fourth brake reversing valve (5) are located, so that the fourth brake (9) works normally.
7. The automatic transmission of claim 5, wherein:
when the gearbox is in a D gear and the gear is in a 1-3 gear, the fifth clutch feedback pressure control valve (7) moves to the rightmost side of the valve core cavity where the valve core is located under the action of spring force, the feedback pressure of the second clutch passes through a channel formed by the valve core cavity where the fifth clutch feedback pressure control valve (7) enables the small valve core (2) of the first clutch control valve to move rightwards, the first clutch control valve (3) is pushed to move rightwards simultaneously, the pressure oil of the main oil way enters the channel formed by the valve core cavity where the first clutch control valve (3) is located through a channel formed by the valve core cavity of the shift valve (1) and enters the first clutch (4), and the first clutch (4) works normally at the moment.
8. The automatic transmission of claim 5, wherein:
when the gearbox is in a D gear and gears enter a fault at 4-6 gears, pressure oil exists in the fifth clutch (8), the oil pressure of the fifth clutch (8) enables the fifth clutch feedback pressure control valve (7) to move to the leftmost side of a valve core cavity where the valve core is located under the action of spring force, the feedback pressure of the second clutch enables the small valve core (10) of the fifth clutch control valve to move rightwards through a channel formed by the valve core cavity where the fifth clutch feedback pressure control valve (7) is located, the fifth clutch control valve (11) is pushed to move rightwards simultaneously, the pressure oil of a main oil way enters a channel formed by the valve core cavity of the shift valve (1) and enters the fifth clutch (8) through a channel formed by the valve core cavity where the fifth clutch control valve (11) is located, and the fifth clutch (8) works normally.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920583938.9U CN209856363U (en) | 2019-04-26 | 2019-04-26 | Hydraulic control system with limp function and automatic gearbox using same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920583938.9U CN209856363U (en) | 2019-04-26 | 2019-04-26 | Hydraulic control system with limp function and automatic gearbox using same |
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| CN209856363U true CN209856363U (en) | 2019-12-27 |
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| CN201920583938.9U Active CN209856363U (en) | 2019-04-26 | 2019-04-26 | Hydraulic control system with limp function and automatic gearbox using same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109899511A (en) * | 2019-04-26 | 2019-06-18 | 南京劲力传动技术有限公司 | Hydraulic control system with limping function and the automatic gear-box using it |
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2019
- 2019-04-26 CN CN201920583938.9U patent/CN209856363U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109899511A (en) * | 2019-04-26 | 2019-06-18 | 南京劲力传动技术有限公司 | Hydraulic control system with limping function and the automatic gear-box using it |
| CN109899511B (en) * | 2019-04-26 | 2024-03-22 | 南京劲力变速器科技有限公司 | Hydraulic control system with limp function and automatic gearbox using same |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200902 Address after: 211100 111 Jiangning Road, Nanjing, Jiangsu province (Jiangning Development Zone) Patentee after: Nanjing Jinli Transmission Technology Co.,Ltd. Address before: 211300 No. 69 Gutan Avenue, Gaochun Economic Development Zone, Nanjing City, Jiangsu Province Patentee before: NANJING JINLI TRANSMISSION TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221109 Address after: 276800 West of Floor 1-2, Building 11, New Generation Information Technology Industrial Park, Gaoxin 7th Road, Rizhao Hi tech Zone, Shandong Province Patentee after: Rizhao Jinli Transmission Co.,Ltd. Address before: No. 111, middle mozhou Road, Jiangning District, Nanjing City, Jiangsu Province (Jiangning Development Zone) Patentee before: Nanjing Jinli Transmission Technology Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Hydraulic control system with limp home function and automatic transmission using it Effective date of registration: 20230424 Granted publication date: 20191227 Pledgee: Rizhao Bank Co.,Ltd. Rizhao High tech Sub branch Pledgor: Rizhao Jinli Transmission Co.,Ltd. Registration number: Y2023980038985 |