CN113251139A - Gear shifting system and control method of two-gear transmission - Google Patents
Gear shifting system and control method of two-gear transmission Download PDFInfo
- Publication number
- CN113251139A CN113251139A CN202110660158.1A CN202110660158A CN113251139A CN 113251139 A CN113251139 A CN 113251139A CN 202110660158 A CN202110660158 A CN 202110660158A CN 113251139 A CN113251139 A CN 113251139A
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- gear shifting
- gear
- control
- control method
- 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
- 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
- F16H61/0202—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 electric
- F16H61/0204—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 electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
- F16H61/0206—Layout of electro-hydraulic control circuits, e.g. arrangement of 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
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
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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 gear shifting system and a control method of a two-gear transmission, and particularly relates to the field of gear shifting and control of a gearbox. The control method comprises an upshift control method and a downshift control method: when the sensor detects that a driver dials a gear selection operating handle to a corresponding position, a PWR position of a gear shifting rule switch, a corresponding throttle opening degree, a vehicle speed and other input signals, the ECU calculates and judges to select the gear shifting rule and control gear shifting time, and then sends a power-on instruction to the gear shifting solenoid valve to control the gear shifting valve to switch on an oil circuit of a clutch or a brake, so that the clutch and the brake are controlled to be connected or separated to complete gear shifting.
Description
Technical Field
The invention relates to the field of gear shifting control of a vehicle gearbox, in particular to a gear shifting system and a control method of a two-gear transmission.
Background
With the continuous development of vehicle technology, more and more vehicles adopt automatic gear shifting gearboxes, and the automatic gear shifting gearboxes are widely applied to city cars and are not popularized enough when being used on large agricultural vehicles. Agricultural machinery such as foreign large-scale cotton picker has realized that power does not break automatic gear shifting, and is still in the parking and shifts domestically, and efficiency is lower, has strengthened driver's working strength, if do not stop shift gear can lead to the gear shifting process beat the tooth serious, the impact degree is great. How to enable the domestic large-scale agricultural vehicle to shift gears without interrupting power and reduce the gear shifting driving fatigue of a driver becomes one of the important researches of the gear shifting control of the current transmission.
Disclosure of Invention
In order to solve the problems, the operation comfort level of a driver is improved, the fatigue of the driver is reduced, the gear shifting smoothness of the vehicle is improved, and the overall performance of the vehicle is finally improved. The invention provides a gear shifting system and a control method of a two-gear transmission.
A gear shifting system and a control method of a two-gear transmission comprise input signals, an ECU, an electromagnetic valve, a gear shifting executing mechanism and an output gear vehicle speed, wherein the input signals comprise a gear selecting operating handle position signal, a gear shifting rule selecting switch signal, a throttle opening degree signal, a vehicle speed signal and the like.
Furthermore, the control method comprises an upshift control method and a downshift control method, the control part mainly detects signals through a sensor, the ECU judges and decides, and a control oil path of the gear shifting control valve is communicated.
Further, the ECU decision mainly comprises the selection of a gear shifting rule and the control of gear shifting time.
Furthermore, the gear shifting actuating mechanism consists of a high-speed clutch and a low-speed brake; the electromagnetic valves are divided into a high-speed electromagnetic valve and a low-speed electromagnetic valve, and are used for respectively controlling the actions of the high-speed clutch and the low-speed brake.
Further, when the sensor detects that the driver dials the gear selection operating handle to the corresponding position, the corresponding position of the gear shifting rule switch, the corresponding throttle opening degree, the vehicle speed and other input signals, the ECU calculates and judges to select the gear shifting rule and control the gear shifting time.
Further, when the vehicle speed and the throttle opening reach the optimal gear shifting timing of the selected gear shifting rule, the ECU immediately sends a power-on or power-off instruction to the gear shifting electromagnetic valve.
Furthermore, when the valve core of the gear shifting valve moves, the control oil circuit of a high-gear clutch and a resisting brake in the planetary gear speed change mechanism is switched on or off, so that the high-gear clutch and the resisting brake are connected or separated, and automatic gear shifting is realized.
Drawings
FIG. 1 is a block diagram of a shift system and control method according to the present invention.
Fig. 2 is a flowchart of an upshift control method of the present invention.
FIG. 3 is a flowchart of a downshift control method of the present invention.
Detailed Description
The present invention will be further illustrated with reference to the following examples.
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.
A gear shifting system and a control method of a two-gear transmission are disclosed, as shown in figure 1, the system comprises input signals, an ECU, an electromagnetic valve, a gear shifting executing mechanism and an output gear vehicle speed, wherein the input signals comprise a gear selecting operation handle position signal, a gear shifting rule selection switch signal, a throttle opening signal, a vehicle speed signal and the like.
Furthermore, the control method comprises an upshift control method and a downshift control method, the control part mainly detects signals through a sensor, the ECU judges and decides, and a control oil path of the gear shifting control valve is communicated.
Furthermore, the ECU mainly selects a gear shifting rule and controls gear shifting time, and the gear shifting executing mechanism consists of a high-speed clutch and a low-speed brake; the electromagnetic valves are divided into a high-speed electromagnetic valve and a low-speed electromagnetic valve, and are used for respectively controlling the actions of the high-speed clutch and the low-speed brake.
Furthermore, the sensor detects input signals of a driver for shifting the gear selection operating handle to a corresponding position, a corresponding position of a gear shifting rule switch, a corresponding throttle opening, a vehicle speed and the like; when the vehicle speed and the throttle opening reach the optimal gear shifting time of the selected gear shifting rule, the ECU immediately sends a power-on or power-off instruction to the gear shifting electromagnetic valve to control the gear shifting action. When the valve core of the gear shifting valve moves, the control oil circuit of a high-gear clutch and a resisting brake in the planetary gear speed change mechanism is switched on or switched off, so that the high-gear clutch and the resisting brake are connected or separated, and automatic gear shifting is realized.
The present invention is not limited to the above-described embodiments, and any obvious improvements, substitutions or modifications can be made by those skilled in the art without departing from the spirit of the present invention.
Claims (4)
1. The system is characterized by comprising input signals, an ECU, an electromagnetic valve, a gear shifting execution mechanism and an output gear vehicle speed, wherein the input signals comprise a gear selecting operation handle position signal, a gear shifting rule selection switch signal, a throttle opening signal, a vehicle speed signal and the like.
2. A two-gear transmission gear shifting system and a control method are characterized in that the control method comprises an up-shifting control method and a down-shifting control method, a control part mainly detects signals through a sensor, an ECU judges and decides, and a control oil path of a gear shifting control valve is communicated; and the ECU decision mainly comprises the selection of a gear shifting rule and the control of gear shifting time.
3. The system and method of claim 1, wherein the shift actuator comprises a high clutch and a low brake; the electromagnetic valves are divided into a high-speed electromagnetic valve and a low-speed electromagnetic valve, and are used for respectively controlling the actions of the high-speed clutch and the low-speed brake.
4. The system and the method as claimed in claim 2, wherein when the sensor detects the input signals of the driver to move the gear selection handle to the corresponding position, the corresponding position of the shift schedule switch, the corresponding throttle opening and the vehicle speed, the ECU calculates and judges to select the shift schedule and control the shift timing, and further sends the power-on command to the shift solenoid valve to control the shift valve to switch on the oil path of the clutch or the brake, so as to control the action of the clutch and the brake to complete the shift.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110660158.1A CN113251139A (en) | 2021-06-15 | 2021-06-15 | Gear shifting system and control method of two-gear transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110660158.1A CN113251139A (en) | 2021-06-15 | 2021-06-15 | Gear shifting system and control method of two-gear transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113251139A true CN113251139A (en) | 2021-08-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110660158.1A Pending CN113251139A (en) | 2021-06-15 | 2021-06-15 | Gear shifting system and control method of two-gear transmission |
Country Status (1)
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| CN (1) | CN113251139A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030114261A1 (en) * | 2001-12-19 | 2003-06-19 | Moorman Steven Patrick | Electro-hydraulic control system for a multi-speed power transmission |
| CN102979862A (en) * | 2012-11-23 | 2013-03-20 | 武汉理工通宇新源动力有限公司 | Two speed automatic transmission |
| CN103775623A (en) * | 2014-01-31 | 2014-05-07 | 北京阳铭诚科技有限责任公司 | Automatic shifting strategy of electric vehicle |
| CN106678357A (en) * | 2017-01-22 | 2017-05-17 | 北京航空航天大学 | Two-gear automatic transmission hydraulic system for pure electric car |
| WO2019120801A1 (en) * | 2017-12-22 | 2019-06-27 | Zf Friedrichshafen Ag | Rotary control device |
| CN110043651A (en) * | 2019-04-25 | 2019-07-23 | 吉林大学青岛汽车研究院 | A kind of slope road traveling shift control method based on double-pinion planetary row's two-gear transmission |
| CN212745006U (en) * | 2020-05-21 | 2021-03-19 | 石河子大学 | Speed ratio control system of hydraulic mechanical stepless transmission |
-
2021
- 2021-06-15 CN CN202110660158.1A patent/CN113251139A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030114261A1 (en) * | 2001-12-19 | 2003-06-19 | Moorman Steven Patrick | Electro-hydraulic control system for a multi-speed power transmission |
| CN102979862A (en) * | 2012-11-23 | 2013-03-20 | 武汉理工通宇新源动力有限公司 | Two speed automatic transmission |
| CN103775623A (en) * | 2014-01-31 | 2014-05-07 | 北京阳铭诚科技有限责任公司 | Automatic shifting strategy of electric vehicle |
| CN106678357A (en) * | 2017-01-22 | 2017-05-17 | 北京航空航天大学 | Two-gear automatic transmission hydraulic system for pure electric car |
| WO2019120801A1 (en) * | 2017-12-22 | 2019-06-27 | Zf Friedrichshafen Ag | Rotary control device |
| CN110043651A (en) * | 2019-04-25 | 2019-07-23 | 吉林大学青岛汽车研究院 | A kind of slope road traveling shift control method based on double-pinion planetary row's two-gear transmission |
| CN212745006U (en) * | 2020-05-21 | 2021-03-19 | 石河子大学 | Speed ratio control system of hydraulic mechanical stepless transmission |
Non-Patent Citations (1)
| Title |
|---|
| 彭晓睿等: "液压机械无级变速器实验台的设计与试验", 《机械设计与制造》 * |
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Application publication date: 20210813 |
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