CN111536227A - Multi-mode gear shifting system and control method thereof - Google Patents
Multi-mode gear shifting system and control method thereof Download PDFInfo
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- CN111536227A CN111536227A CN202010502258.7A CN202010502258A CN111536227A CN 111536227 A CN111536227 A CN 111536227A CN 202010502258 A CN202010502258 A CN 202010502258A CN 111536227 A CN111536227 A CN 111536227A
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- gear
- clutch
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- control
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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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
- F16H59/0204—Selector apparatus for automatic transmissions with means for range selection and manual shifting, e.g. range selector with tiptronic
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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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/50—Inputs being a function of the status of the machine, e.g. position of doors or safety belts
- F16H59/56—Inputs being a function of the status of the machine, e.g. position of doors or safety belts dependent on signals from the main clutch
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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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/68—Inputs being a function of gearing status
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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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/74—Inputs being a function of engine parameters
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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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
- F16H2059/0234—Selectors for gearings using foot control
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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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/68—Inputs being a function of gearing status
- F16H2059/6815—Post shift value of gearing, i.e. calculated or estimated parameters after shift is completed, e.g. estimated output torque after shift is performed
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
The invention provides a multi-mode gear shifting system which comprises a manual gear shifting mode and an automatic gear shifting mode, wherein the manual gear shifting mode can realize the selection and the change of a plurality of manual gears through a clutch, a clutch pedal, a clutch operating mechanism, an operating handle, a gear selecting and shifting mechanism and a manual transmission, and the automatic gear shifting mode can realize the selection and the change of automatic forward gears through the clutch, the clutch operating mechanism, the operating handle, the gear selecting and shifting mechanism, the manual transmission, a gear control unit and a controller. The invention also provides a control method of the multi-mode gear shifting system. According to the invention, the manual speed change mode and the automatic speed change mode are set, and the manual speed change mode has a plurality of manual forward gears, so that the low energy consumption characteristic of the manual gears and the convenient and fast intelligent operation characteristic of the automatic gears can be fully exerted, and the indexes of the whole vehicle, such as economy, dynamic property and the like, can be further optimized.
Description
Technical Field
The invention belongs to the technical field of transmissions, and particularly relates to a multi-mode gear shifting system and a control method thereof.
Background
Currently, transmissions generally include a Manual Transmission (MT), an Automatic Transmission (AT), a Continuously Variable Transmission (CVT), and an Automated Mechanical Transmission (AMT).
The manual transmission is also called a manual gear, and the gear meshing position in the transmission can be synchronously changed through the position change of a gear lever, so that the purposes of changing the transmission ratio and achieving gear shifting are achieved. Referring to fig. 1, a diagram of shift information of a conventional manual transmission is shown, in which a driver can manually select a corresponding gear while engaging a foot to depress a clutch to realize gear shifting. In order to make the gear shifting process more accurate and timely, the prior art improves the manual transmission from different aspects, such as:
the specification of Chinese utility model patent CN 200920222718.X discloses a clutch control device, and the device accessible position sensor changes the stroke of clutch pedal into the signal of telecommunication to pass this signal of telecommunication to control module, control module is according to the pressure of this signal of telecommunication control switch module in order to control helping hand cylinder after that, makes helping hand cylinder drive the push rod accurately and pushes away clutch pressure disk and driven plate joint.
The specification of the chinese utility model patent CN 201220430785.2 discloses a gas circuit control device for pneumatic power-assisted gear shifting of a transmission, which can ensure that the gas circuit is opened to execute the gear shifting action after the clutch is completely separated by the mode of linkage of a control valve and a booster, thereby realizing the safe gear shifting of the transmission.
The mechanical automatic transmission achieves the purpose of automatic gear shifting by adding a set of computer speed selection device on the basis of the traditional manual transmission, not only has the characteristics of convenience and fastness of the automatic transmission, but also keeps the advantages of high transmission efficiency, low oil consumption and low maintenance cost of the manual transmission, so that the mechanical automatic transmission is gradually favored by people in China. For this reason, the prior art has conducted a great deal of research on automatic mechanical transmissions, and as shown in fig. 2, a gear information diagram of an automatic mechanical transmission is shown, in which a driver can generate a gear demand signal to a gear control unit (TCU) by controlling a joystick and control a vehicle running speed or state by a gear controller. The following steps are repeated:
the specification of the chinese invention patent CN 201611126028.5 discloses a novel mechanical automatic transmission, which includes a manual transmission, an electric control unit, an operating handle, a gear selecting and shifting lever and a gear selecting and shifting device, wherein the gear selecting and shifting lever is connected with the gear selecting and shifting device through a cable unit, the electric control unit controls the gear selecting and shifting device, and the operating handle switches between an automatic gear shifting mode and a manual gear shifting mode.
The specification of the chinese invention patent CN 201611237382.5 discloses an electronically controlled mechanical automatic speed changing method, which can store the acquired vehicle speed, engine speed, accelerator pedal position and gear selection through an information storage and operation device, and output an optimal matching signal to a central controller according to a gear shifting rule, a clutch control rule and an engine throttle self-adaptive adjustment rule to realize optimal automatic speed changing.
However, the existing mechanical automatic transmission cannot intelligently control the engaging degree of the clutch, and adopts a manual control mode under complex working conditions and under the condition that an automatic gear shifting strategy is not applicable, namely, the low energy consumption characteristic of the manual transmission and the convenient characteristic of intelligent driving of the automatic transmission are not considered to be fully exerted.
Disclosure of Invention
In view of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a multi-mode shift system and a control method thereof that can fully utilize the low energy consumption characteristics of a manual transmission and the convenient and fast characteristics of intelligent driving.
In order to solve the technical problems, the invention provides a multi-mode gear shifting system, which comprises a manual gear shifting mode and an automatic gear shifting mode, wherein the manual gear shifting mode can realize the selection and the change of a plurality of manual gears through a clutch, a clutch pedal, a clutch control mechanism, a control handle, a gear selecting and shifting mechanism and a manual transmission, and the automatic gear shifting mode can realize the selection and the change of an automatic forward gear through the clutch, the clutch control mechanism, the control handle, the gear selecting and shifting mechanism, the manual transmission, a gear control unit and a controller.
Preferably, in the automatic transmission mode, the shift position control unit may detect a position of the operating handle, and the controller may receive a command from the shift position control unit and control the clutch of the clutch and the transmission of the manual transmission through the clutch operating mechanism and the gear selecting and shifting mechanism, respectively.
Preferably, the clutch control mechanism and the gear selecting and shifting mechanism both comprise a pull rod rocker arm mechanism and an electric power-assisted mechanism, and the controller can be electrically connected with the electric power-assisted mechanism in the clutch control mechanism and the electric power-assisted mechanism in the gear selecting and shifting mechanism.
Preferably, the clutch control mechanism and the gear selecting and shifting mechanism both comprise electric power-assisted mechanisms, and the controller can be electrically connected with the electric power-assisted mechanisms.
Preferably, the clutch control mechanism and the gear selecting and shifting mechanism comprise a cable mechanism and a pneumatic power-assisted mechanism, and the controller can be electrically connected with the pneumatic power-assisted mechanism in the clutch control mechanism and the pneumatic power-assisted mechanism in the gear selecting and shifting mechanism
Preferably, the clutch control mechanism and the gear selecting and shifting mechanism both comprise pneumatic power-assisted mechanisms, and the controller can be electrically connected with the pneumatic power-assisted mechanisms.
The invention also provides a multi-mode gear shifting system control method, which comprises the following steps:
1) the gear control unit detects whether the control handle is in a P gear;
2) if the operating handle is in the P gear and the vehicle speed is lower than a set value, the gear control unit communicates with the brake controller to tighten the parking brake; if the operating handle leaves from the P gear, the gear control unit communicates with the brake controller to release the parking brake;
3) the gear control unit detects whether the control handle enters a D gear or not;
4) if the control handle is in the D gear, the selection and the transformation of the automatic forward gear are controlled according to a gear shifting rule, a clutch control rule and an engine throttle self-adaptive adjustment rule; if the control handle leaves from the D gear, the gear control unit does not control the manual transmission and the clutch any more;
5) if the gear control unit detects that the operating handle is not in the D gear or the P gear, the gear selection, the gear shifting, the clutch engaging degree and the brake depth are all controlled by a driver.
Compared with the prior art, the invention has the beneficial effects that: through setting up manual gear shift mode and automatic gear shift mode, make manual gear shift mode have a plurality of manual fender that advance simultaneously, can give full play to the low energy consumption characteristics of manual fender like this and the convenient characteristics of automatic fender intelligent operation to indices such as economic nature, dynamic property that can further optimize whole car.
Drawings
Fig. 1 is a diagram illustrating shift information of a conventional manual transmission.
Fig. 2 is a diagram illustrating gear information of a conventional automatic mechanical transmission.
FIG. 3 is a schematic diagram of a multi-mode shifting system of the present invention.
FIG. 4 is a graphical illustration of gear information for a multi-mode shifting system of the present invention.
FIG. 5 is a logic diagram of a multi-mode shift system control method of the present invention.
Illustration of the drawings: 1-clutch, 2-clutch pedal, 3-clutch operating mechanism, 4-operating handle, 5-gear selecting and shifting mechanism, 6-manual transmission, 7-gear control unit and 8-controller.
Detailed Description
The invention will be further described with reference to the drawings and preferred embodiments.
Fig. 3 is a schematic structural diagram of a multimode shift system according to the present invention, which includes a manual shift mode and an automatic shift mode, wherein the manual shift mode includes a clutch 1, a clutch pedal 2, a clutch operating mechanism 3, an operating handle 4, a gear selecting and shifting mechanism 5, and a manual transmission 6, and the automatic shift mode includes the clutch 1, the clutch operating mechanism 3, the operating handle 4, the gear selecting and shifting mechanism 5, the manual transmission 6, a gear control unit (TCU)7, and a controller 8.
In the manual shift mode:
the clutch 1 described above generally comprises a drive part, which can be connected to the clutch actuator 3, and a driven part, which can be connected to the manual transmission 6. In practical applications, the clutch 1 can be used for realizing the separation or the engagement of the driving part and the driven part of the clutch 1 by pressing or releasing the clutch pedal 2 by feet, thereby realizing the interruption or the transmission of the power of the engine. Of course, the clutch operating mechanism 3 may be a pull rod rocker mechanism, a cable mechanism, a pneumatic power-assisted mechanism, or an electric power-assisted mechanism.
The manual transmission 6 generally includes a plurality of pairs of gear pairs with different transmission ratios, an input shaft, an output shaft, a synchronizer, and the like, wherein the synchronizer is connected with the gear selecting and shifting mechanism 5, and the gear selecting and shifting mechanism 5 is connected with the operating handle 4. In practical application, a driver can select and change different gears by operating the control handle 4 according to working condition requirements. As shown in fig. 4, the manual transmission mode includes 12 manual forward gears (1-12), a neutral gear (N), 2 reverse gears (R), and a parking gear (P), which can be selected and changed by a driver according to actual conditions. Of course, according to the factors of the whole vehicle arrangement, the power requirement and the like, only 2-10 manual forward gears, neutral gears, reverse gears and parking gears can be set, wherein the parking gear can be set as one gear, or designed as a button arranged on the operating handle 4, or designed at other control positions. The gear selecting and shifting mechanism 5 may be a pull rod rocker mechanism, a cable mechanism, a pneumatic booster mechanism, or an electric booster mechanism.
In the automatic shift mode:
the driving part and the driven part of the clutch 1 are still connected with the clutch operating mechanism 3 and the manual transmission 6 respectively, and meanwhile, the synchronizer in the manual transmission 6 can still be connected with the gear selecting and shifting mechanism 5, and the gear selecting and shifting mechanism 5 can be connected with the operating handle 4. In contrast, the engagement or disengagement of the clutch 1 can be controlled by the controller 8 via the clutch operating mechanism 3, and the selection and shifting of the gears of the manual transmission 6 can be controlled by the controller 8 via the gear selecting and shifting mechanism 5. Specifically, the shift position control unit 7 may detect the position of the manipulation handle 4, that is, detect whether the manipulation handle 4 enters the D-range; when the operating handle 4 enters a D gear, the operating handle 4 can transmit a gear signal to the gear control unit 7, the gear control unit 7 sends an instruction to the controller 8 according to a gear shifting rule, a clutch control rule and an engine throttle self-adaptive adjustment rule, and the controller 8 controls the clutch operating mechanism 3 and the gear selecting and shifting mechanism 5 to be started or closed according to gear requirements so as to control the clutch of the clutch 1 and the speed change of the manual transmission 6 and finally realize the selection and the change of an automatic forward gear. Therefore, in order to realize the connection and communication between the clutch control mechanism 3 and the gear selecting and shifting mechanism 5 and the controller 8, the clutch control mechanism 3 can adopt one of a pull rod rocker arm mechanism and an electric power-assisted mechanism combination, a pull rope mechanism and a pneumatic power-assisted mechanism combination, an electric power-assisted mechanism or a pneumatic power-assisted mechanism; meanwhile, the gear selecting and shifting mechanism 5 can also adopt one of a pull rod rocker mechanism and an electric power-assisted mechanism combination, a pull rope mechanism and a pneumatic power-assisted mechanism combination, an electric power-assisted mechanism or a pneumatic power-assisted mechanism. As to the design of the clutch actuator 3 and the gear selector 5, it is determined and optimized according to the actual control requirements, the spatial arrangement requirements, the design requirements of other components, etc.
Furthermore, the gear control unit 7 may be electrically connected to a Vehicle Control Unit (VCU) or an Electronic Control Unit (ECU) and configured to receive a gear shift schedule, a clutch control schedule, and an engine throttle adaptive adjustment schedule signal sent by the vehicle control unit or the electronic control unit.
The invention also provides a multi-mode gear shifting system control method, which comprises the following steps:
s1, during driving, the operating handle 4 is placed in a certain shift position, and the shift position control unit 7 can detect whether the operating handle 4 is in the P-range.
S2, if the gear control unit 7 detects that the operating handle 4 is in the P gear and the vehicle speed sensor detects that the vehicle speed is lower than a set value, the gear control unit 7 communicates with the brake controller to tighten the parking brake; if the gear control unit 7 detects that the operating handle 4 is moved away from the P range, the gear control unit 7 communicates with the brake controller to release the parking brake.
S3, the shift position control unit 7 further detects whether the manipulation handle 4 enters the D range.
S4, if the gear control unit 7 detects that the operating handle 4 is in the D gear, the gear control unit 7 sends an instruction to the controller 8 according to a gear shifting rule, a clutch control rule and an engine throttle self-adaptive adjustment rule, the controller 8 controls the clutch operating mechanism 3 and the gear selecting and shifting mechanism 5 to start or close according to gear requirements, and then the clutch of the clutch 1 and the speed change of the manual transmission 6 are controlled, and finally the automatic forward gear is selected and changed; if the gear control unit 7 detects that the operating handle 4 is moved out of the D-range, the gear control unit 7 will no longer control the manual transmission 6 and the clutch 1.
S5, if the shift control unit 7 detects that the operating handle 4 is not in the D-range or the P-range, the selection, shifting, clutch engaging degree and braking depth are all controlled by the driver, i.e. the driver operates as the manual shift.
The foregoing merely represents preferred embodiments of the invention, which are described in some detail and detail, and therefore should not be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, various changes, modifications and substitutions can be made without departing from the spirit of the present invention, and these are all within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. A multiple mode shift system comprising a manual shift mode and an automatic shift mode, characterized by:
the manual speed change mode can realize the selection and the change of a plurality of manual gears through a clutch, a clutch pedal, a clutch control mechanism, a control handle, a gear selecting and shifting mechanism and a manual transmission;
the automatic speed changing mode can realize the selection and the change of the automatic forward gear through the clutch, the clutch operating mechanism, the operating handle, the gear selecting and shifting mechanism, the manual transmission, the gear control unit and the controller.
2. A multi-mode shift system as set forth in claim 1 wherein: in the automatic transmission mode, the gear control unit may detect a position of the manipulation handle, and the controller may receive a command from the gear control unit and control the clutch of the clutch and the transmission of the manual transmission through the clutch manipulation mechanism and the gear selection and shift mechanism, respectively.
3. A multi-mode shift system as set forth in claim 2 wherein: the clutch control mechanism and the gear selecting and shifting mechanism both comprise a pull rod rocker arm mechanism and an electric power-assisted mechanism, and the controller can be electrically connected with the electric power-assisted mechanism in the clutch control mechanism and the electric power-assisted mechanism in the gear selecting and shifting mechanism.
4. A multi-mode shift system as set forth in claim 2 wherein: the clutch control mechanism and the gear selecting and shifting mechanism both comprise electric power-assisted mechanisms, and the controller can be electrically connected with the electric power-assisted mechanisms.
5. A multi-mode shift system as set forth in claim 2 wherein: the clutch control mechanism and the gear selecting and shifting mechanism comprise a cable pulling mechanism and a pneumatic power-assisted mechanism, and the controller can be electrically connected with the pneumatic power-assisted mechanism in the clutch control mechanism and the pneumatic power-assisted mechanism in the gear selecting and shifting mechanism.
6. A multi-mode shift system as set forth in claim 2 wherein: the clutch control mechanism and the gear selecting and shifting mechanism both comprise pneumatic power-assisted mechanisms, and the controller can be electrically connected with the pneumatic power-assisted mechanisms.
7. A method of controlling a multi-mode shift system, comprising the steps of:
1) the gear control unit detects whether the control handle is in a P gear;
2) if the operating handle is in the P gear and the vehicle speed is lower than a set value, the gear control unit communicates with the brake controller to tighten the parking brake; if the operating handle leaves from the P gear, the gear control unit communicates with the brake controller to release the parking brake;
3) the gear control unit detects whether the control handle enters a D gear or not;
4) if the control handle is in the D gear, the selection and the transformation of the automatic forward gear are controlled according to a gear shifting rule, a clutch control rule and an engine throttle self-adaptive adjustment rule; if the control handle leaves from the D gear, the gear control unit does not control the manual transmission and the clutch any more;
5) if the gear control unit detects that the operating handle is not in the D gear or the P gear, the gear selection, the gear shifting, the clutch engaging degree and the brake depth are all controlled by a driver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010502258.7A CN111536227A (en) | 2020-06-04 | 2020-06-04 | Multi-mode gear shifting system and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010502258.7A CN111536227A (en) | 2020-06-04 | 2020-06-04 | Multi-mode gear shifting system and control method thereof |
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| CN111536227A true CN111536227A (en) | 2020-08-14 |
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| CN202010502258.7A Pending CN111536227A (en) | 2020-06-04 | 2020-06-04 | Multi-mode gear shifting system and control method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101746374A (en) * | 2010-01-08 | 2010-06-23 | 上海中科深江电动车辆有限公司 | Control method and control system of electronic-control mechanical type automatic transmission of pure electric vehicle |
| CN102116368A (en) * | 2010-07-22 | 2011-07-06 | 浙江吉利汽车研究院有限公司 | Manual gear-shifting control method for automatic transmission |
| CN102734453A (en) * | 2011-12-20 | 2012-10-17 | 重庆市艾莫特汽车部件有限公司 | Manual-automatic transmission integrated gearbox assembly |
| CN105020382A (en) * | 2014-04-29 | 2015-11-04 | 中国科学院沈阳自动化研究所 | Automatic gear shifting mechanism based on manual transmission automobile |
| CN110686072A (en) * | 2019-09-16 | 2020-01-14 | 刘思禹 | Manual-automatic independent integrated gearbox mechanism |
-
2020
- 2020-06-04 CN CN202010502258.7A patent/CN111536227A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101746374A (en) * | 2010-01-08 | 2010-06-23 | 上海中科深江电动车辆有限公司 | Control method and control system of electronic-control mechanical type automatic transmission of pure electric vehicle |
| CN102116368A (en) * | 2010-07-22 | 2011-07-06 | 浙江吉利汽车研究院有限公司 | Manual gear-shifting control method for automatic transmission |
| CN102734453A (en) * | 2011-12-20 | 2012-10-17 | 重庆市艾莫特汽车部件有限公司 | Manual-automatic transmission integrated gearbox assembly |
| CN105020382A (en) * | 2014-04-29 | 2015-11-04 | 中国科学院沈阳自动化研究所 | Automatic gear shifting mechanism based on manual transmission automobile |
| CN110686072A (en) * | 2019-09-16 | 2020-01-14 | 刘思禹 | Manual-automatic independent integrated gearbox mechanism |
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Application publication date: 20200814 |