CN115143278B - Transmission gear shifting method, device, equipment and storage medium - Google Patents
Transmission gear shifting method, device, equipment and storage medium Download PDFInfo
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- CN115143278B CN115143278B CN202210744425.8A CN202210744425A CN115143278B CN 115143278 B CN115143278 B CN 115143278B CN 202210744425 A CN202210744425 A CN 202210744425A CN 115143278 B CN115143278 B CN 115143278B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 195
- 238000000034 method Methods 0.000 title claims abstract description 73
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- 230000007935 neutral effect Effects 0.000 claims description 15
- 230000001050 lubricating effect Effects 0.000 claims description 9
- 230000000737 periodic effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 238000005461 lubrication Methods 0.000 description 12
- 239000003921 oil Substances 0.000 description 11
- 238000004891 communication Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
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Classifications
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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
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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
- F16H61/0251—Elements specially adapted for electric control units, e.g. valves for converting electrical signals to fluid signals
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
The invention discloses a transmission gear shifting method, a device, equipment and a storage medium, wherein the method comprises the following steps: determining a transmission operating mode of a vehicle according to a gear shifting handle position of the vehicle and/or a driving mode of the vehicle; determining a target control mode of a gear-shifting flow valve of the vehicle according to the transmission operation mode; and controlling the gear shifting flow valve based on the target control mode so as to realize the control of gear shifting of the transmission. By the aid of the scheme, the control accuracy and the control efficiency of the electromagnetic valve for controlling the gear shifting of the transmission can be improved.
Description
Technical Field
The embodiment of the invention relates to the field of intelligent vehicles, in particular to a transmission gear shifting method, a device, equipment and a storage medium.
Background
In the field of transmission control, a mode of controlling transmission gear shifting through a gear shifting pressure electromagnetic valve and a gear shifting flow electromagnetic valve is gradually applied to a transmission hydraulic control system. The existing transmission gear shifting mode has the problem that the gear shifting speed is low due to the fact that the response of an electromagnetic valve is too slow, and meanwhile the problem that the gear shifting control accuracy and control efficiency of the electromagnetic valve are low. Therefore, how to improve the control accuracy and control efficiency of the solenoid valve to control the transmission gear shift is a problem to be solved.
Disclosure of Invention
The invention provides a transmission gear shifting method, a device, equipment and a storage medium, which can improve the control precision and the control efficiency of electromagnetic valve control transmission gear shifting.
According to an aspect of the present invention, there is provided a transmission shift method including:
determining a transmission operating mode of a vehicle according to a gear shifting handle position of the vehicle and/or a driving mode of the vehicle;
determining a target control mode of a gear-shifting flow valve of the vehicle according to the transmission operation mode;
And controlling the gear shifting flow valve based on the target control mode so as to realize the control of gear shifting of the transmission.
According to another aspect of the present invention, there is provided a transmission shift device comprising:
A transmission mode determining module for determining a transmission operating mode of a vehicle according to a shift handle position of the vehicle and/or a vehicle driving mode;
The target control mode determining module is used for determining a target control mode of a gear shifting flow valve of the vehicle according to the transmission running mode;
and the transmission gear shifting control module is used for controlling the gear shifting flow valve based on the target control mode so as to realize the control of gear shifting of the transmission.
According to another aspect of the present invention, there is provided an electronic apparatus including:
At least one processor; and
A memory communicatively coupled to the at least one processor; wherein,
The memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the transmission shift method of any one of the embodiments of the present invention.
According to another aspect of the present invention, there is provided a computer readable storage medium storing computer instructions for causing a processor to execute a transmission shift method according to any one of the embodiments of the present invention.
According to the technical scheme, the running mode of the transmission of the vehicle is determined according to the position of the gear shifting handle of the vehicle and/or the driving mode of the vehicle; determining a target control mode of a gear-shifting flow valve of the vehicle according to a transmission operation mode; and controlling the gear shifting flow valve based on the target control mode so as to realize the control of gear shifting of the transmission. According to the scheme, based on the transmission operation mode, a proper target control mode is selected, and the gear shifting flow valve is controlled to realize gear shifting of the transmission. Different gear-shifting flow valve control methods are adopted aiming at different transmission operation modes, and the gear-shifting control precision and control efficiency of the transmission can be improved on the premise of ensuring the gear-shifting safety of the transmission.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1A is a flowchart of a transmission shift method according to a first embodiment of the present invention;
FIG. 1B is a schematic illustration of a V-shift flow valve Q-I curve;
FIG. 1C is a schematic illustration of a Q-I curve for an N-type shift flow valve;
FIG. 1D is a schematic diagram of a shift control system configured with a V-type shift flow valve;
FIG. 2 is a flow chart of a transmission shift method provided in accordance with a second embodiment of the present invention;
FIG. 3 is a flow chart diagram of a transmission shift method according to a third embodiment of the present invention;
Fig. 4 is a schematic structural view of a transmission shifting device according to a fourth embodiment of the present invention;
fig. 5 is a schematic structural diagram of an electronic device according to a fifth embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "current," "target," and the like in the description and claims of the present invention and the above-described drawings are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "includes," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
Fig. 1A is a flowchart of a transmission shifting method according to an embodiment of the present invention, where the embodiment is applicable to a case of controlling a vehicle transmission to shift gears. The method may be performed by a transmission shift device, which may be implemented in hardware and/or software, which may be configured in an electronic device, such as a shift control system of the electronic device.
In the field of transmission shift control, a shift pressure valve and a shift flow valve are often used to control shifting of a transmission fork. The control unit is used for controlling the current of the gear-shifting flow valve, so that the oil quantity of the hydraulic oil of the transmission flowing through the hydraulic oil duct can be controlled, the movement speed of a gear-shifting fork of the transmission is controlled, and the gear-shifting control of the transmission is realized.
Common shift flow valves include V-type shift flow valves and N-type shift flow valves; the gear-shifting flow valve is characterized in that a valve core controlled by an electromagnetic valve can realize one-side conduction of a piston cylinder and control the opening degree of a gear-shifting pressure valve along with gradual increase of control current, and can realize complete closing of an oil duct in a certain current interval, so that the gear-shifting pressure valve is cut off. And with the increase of control current, the engagement pressure can realize the conduction of the oil way on the other side of the piston cylinder. Therefore, one electromagnetic valve can be adopted to realize the conduction and speed control of the piston cylinder in two directions. The piston cylinder is a structural form of a hydraulic cylinder, and is input with pressure and flow, and output with thrust and speed.
Because the cut-off section current point of the V-shaped gear shifting flow valve is generally at the middle end of the control current, the gear shifting flow valve is kept to be turned off, and certain current is required to be kept all the time. When the number of the gear-shifting flow valves in the system is large, the electric load of the controller is large, so that the problem of large energy consumption of the whole vehicle is caused; if the shift pressure valve is kept closed, and the current of the shift flow valve is closed, the shift flow valve can respond untimely to influence the shift speed when the system enters the gear shifting process. FIG. 1B is a schematic illustration of a V-shift flow valve Q-I curve. The Q-I curve may be used to characterize the flow versus current; and I m is the off-current of the gear shifting flow valve.
For the N-type gear shifting flow valve, the switching-off of the gear shifting flow valve can be realized at a zero current point, but when the gear shifting process starts, the time required for the gear shifting flow valve to control the current to reach a desired command current point from the zero current point is long, so that the execution efficiency of a gear shifting control system is influenced, and even the accuracy of gear shifting control of a transmission can be influenced. FIG. 1C is a schematic diagram of a Q-I curve for an N-type shift flow valve, and I 1 is the off current for the N-type shift flow valve. And I m is the off-current of the gear shifting flow valve.
As shown in fig. 1A, the method includes:
S110, determining a transmission operation mode of the vehicle according to the position of a gear shifting handle of the vehicle and/or the driving mode of the vehicle.
The gear shifting handle is positioned in the gear of the gear shifting handle, and the gear comprises a P gear, an N gear, an R gear, a D gear and an S gear.
The P gear is a parking gear and can be used when a vehicle is stopped or stopped; the N gear is neutral gear and is used when the vehicle is temporarily parked. The R gear is a reverse gear and is used for controlling the vehicle to reverse; the D gear is a forward gear and is used for controlling the vehicle to normally move forward; the S gear is also called a sport mode, when the gear shifting handle is positioned at the S gear, the rotating speed of the engine is higher, and the torque output is increased so as to obtain larger power.
The vehicle driving modes include a strong power mode and a non-strong power mode. When the vehicle driving mode is a strong power mode, the engine is in a high power range for a long time so as to meet the requirement of maximum power, the gear shifting speed is relatively high, and the oil consumption is high. When the vehicle driving mode is a non-strong power mode, the engine power is lower, balanced operation and stable driving can be kept, the gear shifting speed is relatively lower, and the oil consumption is lower.
The transmission operating mode is an operating mode corresponding to a running state of the vehicle, and a correspondence relationship between the transmission operating mode and the running state of the vehicle may be preset and stored in the shift control system.
Specifically, determining a gear of the gear shifting handle according to the position of the gear shifting handle of the vehicle; and judging the driving mode of the vehicle according to the power consumption of the vehicle engine. For example, a power threshold is set according to the actual situation, and if the power consumption of the vehicle engine is greater than the power threshold, the vehicle driving mode is a strong power mode; if the power consumption of the vehicle engine is less than or equal to the power threshold, the vehicle driving mode is a non-powerless mode. And determining a transmission running mode of the vehicle according to the gear of the gear shifting handle and whether the driving mode of the vehicle is a strong power mode.
For example, the transmission operating mode of the vehicle may be determined by the following substeps:
s1101, determining that the transmission operating mode of the vehicle is the energy-saving operating mode if the shift lever position of the vehicle is any one of the PND gears and/or the vehicle driving mode is the non-strong power mode.
The PND gear comprises a P gear, an N gear and a D gear.
Specifically, if the vehicle shift lever is any one of the P range, the N range, and the D range, the transmission operating mode of the vehicle is determined to be the energy-saving operating mode. Alternatively, if the vehicle driving mode is the non-strong power mode, the transmission operation mode of the vehicle may be determined to be the energy saving operation mode. If the vehicle shift lever is any one of the P range, the N range, and the D range, and the vehicle driving mode is the non-strong power mode, the transmission operation mode of the vehicle may be determined to be the energy-saving operation mode.
And S1102, if the position of the gear shifting handle is any gear in the RS gears and/or the vehicle driving mode is a strong power mode, determining that the transmission operation mode is an aggressive operation mode.
Wherein, the RS gear includes R gear and S gear.
Specifically, if the vehicle shift lever is any one of the R range and the S range, the transmission operating mode is determined to be the aggressive operating mode. Alternatively, if the vehicle driving mode is the strong power mode, the transmission operation mode may be determined to be the aggressive operation mode. If the vehicle shift lever is any one of the R range and the S range and the vehicle driving mode is the strong power mode, the transmission operation mode may be determined to be the aggressive operation mode.
S120, determining a target control mode of a gear-shifting flow valve of the vehicle according to the operation mode of the transmission.
The shift flow valve, i.e. the shift flow solenoid valve, is an industrial device controlled by electromagnetic force, is a dynamic basic element for controlling fluid, and can be used for adjusting the direction, flow, speed and other parameters of a medium in an industrial control system. The electromagnetic valve can be matched with different circuits to realize the expected control effect, and the control precision and flexibility are ensured.
By way of example, FIG. 1D is a schematic diagram of a shift control system configured with a V-type shift flow valve. Wherein 1 is a gear shifting pressure valve for controlling the pressure required in the gear shifting process; 2 is a V-shaped shifting electromagnetic valve which can be used for realizing reversing and opening control of shifting; 3 is the right side of the gear shifting piston cylinder; 4 is the left side of the gear shifting piston cylinder; and 5 is a gear shifting fork sensor for detecting the real-time position of a shifting fork, and 6 is a gear shifting main oil pressure which is used as a pressure source of the system.
Specifically, different transmission operating modes correspond to different target control modes, and the transmission operating modes and the target control modes may be stored in the shift control system correspondingly. After determining the transmission operating mode, a target control mode for the shift flow valve of the vehicle is determined based on the transmission operating mode.
For example, if the transmission operating mode is an aggressive operating mode, determining that the target control mode for the shift flow valve of the vehicle is a neutral waiting control mode; if the transmission operating mode is the energy-saving operating mode, the target control mode of the gear-shifting flow valve of the vehicle is determined to be a low-level waiting control method.
The neutral waiting control method is a neutral IDLE control method, that is, before the transmission gear shifting is controlled, the gear shifting flow valve is controlled to control the current to be located at the cut-off current point of the gear shifting flow valve, so that the gear shifting flow valve is in a neutral waiting state.
The low-level waiting control method is a low-level IDLE control method, namely, before the transmission gear shifting is controlled, the control current is positioned at a zero-level current point by controlling a gear shifting flow valve.
It can be appreciated that, according to the scheme of the embodiment, based on the transmission operation mode of the vehicle, the middle waiting control mode is determined to be the target control mode when the transmission is in the aggressive operation mode, and the low waiting control mode is determined to be the target control mode when the transmission is in the energy-saving operation mode, so that the working efficiency of the gear-shifting flow valve can be improved.
And S130, controlling a gear shifting flow valve based on a target control mode so as to realize the control of gear shifting of the transmission.
Specifically, after the target control mode is determined, the gear-shifting flow valve is controlled based on the target control mode so as to control the opening degree of the gear-shifting pressure valve and the current flowing through the electromagnetic valve, and further the oil quantity of the hydraulic oil of the transmission flowing through the hydraulic oil duct is controlled according to the pressure generated by the gear-shifting pressure valve and the current flowing through the electromagnetic valve, so that the gear shifting of the transmission is controlled.
According to the technical scheme provided by the embodiment, the running mode of the transmission of the vehicle is determined according to the position of the gear shifting handle of the vehicle and/or the driving mode of the vehicle; determining a target control mode of a gear-shifting flow valve of the vehicle according to a transmission operation mode; and controlling the gear shifting flow valve based on the target control mode so as to realize the control of gear shifting of the transmission. According to the scheme, based on the transmission operation mode, a proper target control mode is selected, and the gear shifting flow valve is controlled to realize gear shifting of the transmission. Different gear-shifting flow valve control methods are adopted aiming at different transmission operation modes, and the gear-shifting control precision and control efficiency of the transmission can be improved on the premise of ensuring the gear-shifting safety of the transmission.
Example two
Fig. 2 is a flowchart of a transmission shifting method according to a second embodiment of the present invention, which is optimized based on the foregoing embodiment, and provides a preferred implementation manner for controlling a shift flow valve based on a target control manner, so as to control transmission shifting. Specifically, as shown in fig. 2, the method includes:
s210, determining a transmission operation mode of the vehicle according to the position of a gear shifting handle of the vehicle and/or the driving mode of the vehicle.
S220, if the transmission operation mode is the aggressive operation mode, determining that the target control mode of the gear shifting flow valve of the vehicle is a neutral waiting control method.
And S230, closing the gear shifting pressure valve, and controlling the current to be positioned at a current point of a cut-off interval through the gear shifting flow valve.
Wherein the current is the current flowing through the shift flow valve.
Specifically, if it is determined that the target control method for the shift flow valve of the vehicle is the neutral waiting control method, the shift pressure valve is closed, and the shift flow valve is controlled so that the current is at the cut-off section current point.
S240, acquiring control time length of the control current flowing out of the gear-shifting flow valve.
The control time is the time for opening the gear-shifting flow valve.
Specifically, the correspondence between the temperature of the shift flow valve and the control time period is stored in the shift control system in advance in the form of a table. The control duration of the shift flow valve can be determined according to the corresponding relation between the temperature of the shift flow valve and the control duration.
S250, if the control time length is greater than the time length threshold value, opening the gear shifting pressure valve to a preset opening degree.
The time duration threshold may be set according to practical situations, for example, may be one second. The preset opening degree may be an opening degree of a shift pressure valve set according to actual demands.
Specifically, if the control time period is greater than the time period threshold, it is determined that the shift control system needs to control the transmission to shift gears. And opening the gear shifting pressure valve, and controlling the gear shifting pressure valve to be opened to a preset opening degree so as to generate pressure acting on the gear shifting flow valve through the gear shifting pressure valve.
And S260, controlling the gear shifting of the transmission according to the current and the pressure generated by the gear shifting pressure valve under the preset opening degree.
Specifically, the shift pressure valve may generate a pressure corresponding to the preset opening under the preset opening, for example, the pressure corresponding to the preset opening may be 1Bar. When the gear shifting control system needs to control the gear shifting of the transmission, a gear shifting current value required by the gear shifting of the transmission is determined, the current is switched to the gear shifting current value, and then the current value and the pressure generated by the gear shifting pressure valve are acted on the gear shifting flow valve together, so that the oil passage conduction state of the piston cylinder is controlled through controlling the gear shifting flow valve, the oil quantity of the hydraulic oil of the transmission flowing through the hydraulic oil passage is controlled, and the gear shifting control of the transmission is realized. The shift current value refers to a current value required to control the transmission to shift to a desired gear.
For example, the shift pressure valve and the shift flow valve are controlled to reset when the vehicle exits the aggressive shift mode.
It can be understood that the gear-shifting pressure valve and the gear-shifting flow valve are controlled to reset in time, so that misoperation of a gear-shifting fork of the transmission caused by residual pressure can be prevented.
According to the technical scheme of the embodiment, the running mode of the transmission of the vehicle is determined according to the position of the gear shifting handle of the vehicle and/or the driving mode of the vehicle; if the transmission operating mode is the aggressive operating mode, determining that the target control mode of the gear shifting flow valve of the vehicle is a neutral waiting control method; closing a gear shifting pressure valve, and controlling the current to be positioned at a current point of a cut-off interval through a gear shifting flow valve; acquiring control time length of a gear-shifting flow valve for controlling current to flow out; if the control time length is greater than the time length threshold value, opening the gear shifting pressure valve to a preset opening degree; and controlling the gear shifting of the transmission according to the current and the pressure generated by the gear shifting pressure valve under the preset opening degree. According to the scheme, the neutral IDLE control method is adopted in the aggressive operation mode, so that the transmission gear shifting quick response in the aggressive operation mode can be realized on the premise of ensuring the control safety of a gear shifting control system, the quick response requirement of the transmission gear shifting in the aggressive operation mode of a vehicle is met, and the gear shifting efficiency of the transmission is improved. Meanwhile, when the control time length is larger than the time length threshold value, the gear shifting pressure valve is controlled to be opened, so that the gear shifting accuracy of the transmission can be further improved.
Example III
Fig. 3 is a flowchart of a transmission shifting method according to a third embodiment of the present invention, which is optimized based on the foregoing embodiment, and provides a preferred implementation manner for controlling a shift flow valve based on a target control manner, so as to control transmission shifting. Specifically, as shown in fig. 3, the method includes:
S310, determining a transmission operation mode of the vehicle according to the position of a gear shifting handle of the vehicle and/or the driving mode of the vehicle.
S320, if the transmission operation mode is the energy-saving operation mode, determining that the target control mode of the gear-shifting flow valve of the vehicle is a low-level waiting control method.
S330, closing the gear shifting pressure valve, and controlling the current to be at a zero current point through the gear shifting flow valve.
Specifically, if it is determined that the target control mode of the shift flow valve of the vehicle is a low-level waiting control method, the shift pressure valve is closed, and the current is located at a zero current point by controlling the shift flow valve, that is, the current flowing through the shift flow valve is controlled to be at zero potential.
Preferably, the shift flow valve is periodically lubricated based on the lubrication periodic table and the lubrication sequence of the shift flow valve with the current at the zero current point.
In order to ensure the response speed of the solenoid valve element in the shift flow valve, each shift flow valve in the shift control system may be subjected to periodic lubrication processing when the current is at the zero current point.
The lubricating periodic table is a table for recording the correspondence between the temperature of the shift flow valve and the lubricating period. The lubrication sequence is a preset sequence for carrying out lubrication treatment on a gear shifting flow valve in a gear shifting control system according to actual requirements.
Specifically, when the current is at a zero current point, the temperature of each gear-shifting flow valve in the gear-shifting control system is obtained in real time, and the lubrication period of each gear-shifting flow valve is determined according to the temperature. And periodically lubricating each gear shifting flow valve based on the lubrication period and a preset lubrication sequence.
Optionally, if more than one shift flow valve exists in the shift control system, when lubricating the shift flow valve, at most 2 lubricating operations of shifting to the flow valve are performed at the same time, so that the effect of reducing the electric load of the shift control system is achieved
It will be appreciated that in this embodiment, the periodic lubrication of the shift flow valve ensures that the shift flow valve remains in a normal operating condition, thereby ensuring that the solenoid valve can respond in time when the transmission is required to be controlled to shift by the shift flow valve.
And S340, under the condition that the vehicle has a gear shifting requirement, switching the current from a zero-position current point to a cut-off interval current point through a gear shifting flow valve.
Specifically, when the shift control system determines that the vehicle has a shift demand, the shift pressure valve is maintained in a closed state while the current flowing through the shift flow valve is switched from a zero-position current point to a cut-off interval current point by controlling the shift flow valve.
The switching of the current from the zero current point to the off-interval current point may be achieved, for example, in a manner provided by the following substeps.
S3401, determining the expected operation gear of the transmission according to the rotation speed of an output shaft of the transmission and the opening degree of an accelerator pedal.
The expected operation gear refers to an operation gear corresponding to the rotation speed of the output shaft and the opening degree of the accelerator pedal in the running process of the vehicle. The correspondence relationship among the desired operation gear, the rotation speed of the output shaft, and the opening degree of the accelerator pedal can be stored in advance in the form of an operation gear query table.
Specifically, the gear shifting control system obtains the rotation speed of an output shaft of a transmission of the vehicle and the opening degree of an accelerator pedal of the vehicle in real time, and determines an expected operation gear of the transmission through an operation gear inquiry table according to the rotation speed of the output shaft and the opening degree of the accelerator pedal.
S3402, determining the number of the gear shifting flow valve corresponding to the expected operation gear.
The number of the gear shifting flow valve is the identifier corresponding to the gear shifting flow valve, and the gear shifting flow valve in the gear shifting control system can be numbered according to actual requirements. The number may be a numeric number, a literal number, a graphic number, or the like.
Specifically, if the desired operating range is inconsistent with the current transmission range, transmission gear shifting needs to be controlled. And determining the number corresponding to the gear-shifting flow valve which is required to be controlled for controlling the gear shifting of the transmission according to the expected operation gear.
S3403, switching the current from the zero current point to the cut-off interval current point through the gear-shifting flow valve corresponding to the number.
Specifically, the current flowing through the gear shifting flow valve is switched from the zero position current point to the cut-off interval current point through the gear shifting flow valve corresponding to the control number.
It can be appreciated that in this embodiment, by determining the desired operating gear of the transmission and the number of the shift flow valve corresponding to the desired operating gear, the shift flow valve corresponding to the number is controlled to control the switching of the current, and the accuracy of controlling the transmission shift can be improved.
And S350, if the preparation time length of the current at the current point of the cut-off interval is greater than a time length threshold value, switching the gear of the transmission to the decision-determining gear by controlling a gear shifting pressure valve and a gear shifting flow valve.
The preparation time is the total time of the current in the cut-off interval.
It will be appreciated that during operation of the vehicle, since the output shaft speed and accelerator pedal opening of the transmission are dynamically changing, the desired operating range of the transmission may change many times in a short period of time, resulting in transmission shift errors.
Specifically, after the current is switched from the zero current point to the cut-off interval current point, the preparation time length of the current at the cut-off interval current point is obtained, and the preparation time length is compared with a preset time length threshold. If the preparation time is longer than the time threshold, determining that the decision determines that the gear is the expected operation gear. The pressure is generated by controlling the gear-shifting pressure valve, the pressure and the current required by gear shifting are acted on the gear-shifting flow valve, so that the oil passage conduction state of the piston cylinder is controlled by controlling the gear-shifting flow valve, the oil quantity of the hydraulic oil of the transmission flowing through the hydraulic oil passage is controlled, the gear-shifting control of the transmission is realized, and the gear of the transmission is switched to the decision-determining gear.
For example, if the preparation time is less than or equal to the time threshold, the desired operating range cannot be determined as a decision, requiring a redetermining of the desired operating range of the transmission.
According to the technical scheme of the embodiment, the running mode of the transmission of the vehicle is determined according to the position of the gear shifting handle of the vehicle and/or the driving mode of the vehicle; if the transmission operating mode is an energy-saving operating mode, determining that a target control mode of a gear shifting flow valve of the vehicle is a low-level waiting control method; closing a gear shifting pressure valve, and controlling current to be positioned at a zero current point through a gear shifting flow valve; under the condition that the vehicle has a gear shifting requirement, switching the current from a zero current point to a cut-off interval current point through a gear shifting flow valve; and if the preparation time of the current at the current point of the cut-off interval is longer than the time threshold, the gear of the transmission is switched to the decision-determining gear by controlling the gear shifting pressure valve and the gear shifting flow valve. According to the scheme, the low-level waiting control method is adopted in the energy-saving operation mode, so that the low-power consumption control of the gear shifting flow valve in the energy-saving operation mode can be realized on the premise of ensuring the control safety of the gear shifting control system, and the resource waste in the gear shifting process of the transmission is avoided. Meanwhile, when the preparation time length is larger than the time length threshold value, the transmission gear is switched to the decision-making gear, so that the gear shifting accuracy of the transmission can be further improved, and the driving experience of a driver is improved.
Example IV
Fig. 4 is a schematic structural diagram of a transmission shifting device according to a fourth embodiment of the present invention. The present embodiment is applicable to a case where a vehicle state is presented to a user. As shown in fig. 4, the transmission shift device includes: a transmission mode determination module 410, a target control mode determination module 420, and a transmission shift control module 430.
Wherein the transmission mode determination module 410 is configured to determine a transmission operating mode of the vehicle based on a shift lever position of the vehicle and/or a vehicle driving mode;
A target control mode determination module 420 for determining a target control mode for a shift flow valve of the vehicle based on the transmission operating mode;
the transmission shift control module 430 is configured to control the shift flow valve based on a target control mode to effect control of transmission shifts.
According to the technical scheme provided by the embodiment, the running mode of the transmission of the vehicle is determined according to the position of the gear shifting handle of the vehicle and/or the driving mode of the vehicle; determining a target control mode of a gear-shifting flow valve of the vehicle according to a transmission operation mode; and controlling the gear shifting flow valve based on the target control mode so as to realize the control of gear shifting of the transmission. According to the scheme, based on the transmission operation mode, a proper target control mode is selected, and the gear shifting flow valve is controlled to realize gear shifting of the transmission. Different gear-shifting flow valve control methods are adopted aiming at different transmission operation modes, and the gear-shifting control precision and control efficiency of the transmission can be improved on the premise of ensuring the gear-shifting safety of the transmission.
The transmission mode determination module 410 is specifically configured to:
If the position of the gear shifting handle of the vehicle is any gear in the PND gears and/or the vehicle driving mode is a non-strong power mode, determining that the transmission operating mode of the vehicle is an energy-saving operating mode;
and if the position of the gear shifting handle is any gear in the RS gears and/or the vehicle driving mode is a strong power mode, determining that the transmission operating mode is an aggressive operating mode.
Illustratively, the target control manner determination module 420 is specifically configured to:
If the transmission operating mode is the aggressive operating mode, determining that the target control mode of the gear shifting flow valve of the vehicle is a neutral waiting control method;
If the transmission operating mode is the energy-saving operating mode, the target control mode of the gear-shifting flow valve of the vehicle is determined to be a low-level waiting control method.
For example, if the target control mode is the neutral waiting control mode, the transmission shift control module 430 is specifically configured to:
closing a gear shifting pressure valve, and controlling the current to be positioned at a current point of a cut-off interval through a gear shifting flow valve;
Acquiring control time length of a gear-shifting flow valve for controlling current to flow out;
if the control time length is greater than the time length threshold value, opening the gear shifting pressure valve to a preset opening degree;
And controlling the gear shifting of the transmission according to the current and the pressure generated by the gear shifting pressure valve under the preset opening degree.
Illustratively, the above transmission shift device further includes:
And the reset module is used for controlling the gear shifting pressure valve and the gear shifting flow valve to reset when the vehicle exits the aggressive gear shifting mode.
For example, if the target control mode is a low standby control mode, the transmission shift control module 430 includes:
the current control unit is used for closing the gear shifting pressure valve and controlling the current to be positioned at a zero current point through the gear shifting flow valve;
the current switching unit is used for switching the current from a zero-position current point to a cut-off interval current point through the gear-shifting flow valve under the condition that the vehicle has a gear-shifting requirement;
And the transmission gear switching unit is used for switching the transmission gear to the decision-determining gear by controlling the gear shifting pressure valve and the gear shifting flow valve if the preparation time length of the current at the current point of the cut-off interval is longer than the time length threshold value.
Further, the current switching unit is specifically configured to:
determining an expected operation gear of the transmission according to the rotation speed of an output shaft of the transmission and the opening degree of an accelerator pedal;
Determining the number of a gear shifting flow valve corresponding to an expected operation gear;
and switching the current from the zero current point to the cut-off interval current point through the gear-shifting flow valve corresponding to the number.
Illustratively, the above transmission shift device further includes:
And the gear shifting flow valve lubrication module is used for periodically lubricating the gear shifting flow valve based on the lubrication periodic table and the lubrication sequence of the gear shifting flow valve under the condition that the current is at a zero current point.
The transmission gear shifting device provided by the embodiment can be applied to the transmission gear shifting method provided by any embodiment, and has corresponding functions and beneficial effects.
Example five
Fig. 5 shows a schematic diagram of the structure of an electronic device 10 that may be used to implement an embodiment of the invention. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. Electronic equipment may also represent various forms of mobile devices, such as personal digital processing, cellular telephones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.
As shown in fig. 5, the electronic device 10 includes at least one processor 11, and a memory, such as a Read Only Memory (ROM) 12, a Random Access Memory (RAM) 13, etc., communicatively connected to the at least one processor 11, in which the memory stores a computer program executable by the at least one processor, and the processor 11 may perform various appropriate actions and processes according to the computer program stored in the Read Only Memory (ROM) 12 or the computer program loaded from the storage unit 18 into the Random Access Memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 may also be stored. The processor 11, the ROM 12 and the RAM 13 are connected to each other via a bus 14. An input/output (I/O) interface 15 is also connected to bus 14.
Various components in the electronic device 10 are connected to the I/O interface 15, including: an input unit 16 such as a keyboard, a mouse, etc.; an output unit 17 such as various types of displays, speakers, and the like; a storage unit 18 such as a magnetic disk, an optical disk, or the like; and a communication unit 19 such as a network card, modem, wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.
The processor 11 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 11 performs the various methods and processes described above, such as transmission shift methods.
In some embodiments, the transmission shift method may be implemented as a computer program tangibly embodied on a computer-readable storage medium, such as the storage unit 18. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 10 via the ROM 12 and/or the communication unit 19. One or more steps of the transmission shift method described above may be performed when a computer program is loaded into RAM 13 and executed by processor 11. Alternatively, in other embodiments, the processor 11 may be configured to perform the transmission shift method in any other suitable manner (e.g., by means of firmware).
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.
A computer program for carrying out methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable transmission shift device such that the computer programs, when executed by the processor, cause the functions/operations specified in the flowchart and/or block diagram to be performed. The computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.
The computing system may include clients and servers. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service are overcome.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (10)
1. A transmission shift method, comprising:
determining a transmission operating mode of a vehicle according to a gear shifting handle position of the vehicle and/or a driving mode of the vehicle;
determining a target control mode of a gear-shifting flow valve of the vehicle according to the transmission operation mode;
if the transmission operation mode is an aggressive operation mode, determining that a target control mode of a gear shifting flow valve of the vehicle is a neutral waiting control method;
If the transmission operation mode is an energy-saving operation mode, determining that a target control mode of a gear shifting flow valve of the vehicle is a low-level waiting control method;
The neutral position waiting control method is used for enabling the gear shifting flow valve to be in a neutral position waiting state before gear shifting of the transmission is controlled; the low-level waiting control method is used for positioning the control current of the gear-shifting flow valve at a zero-position current point before gear shifting of the transmission is controlled;
And controlling the gear shifting flow valve based on the target control mode so as to realize the control of gear shifting of the transmission.
2. The method of claim 1, wherein the determining a transmission operating mode of the vehicle based on a shift handle position of the vehicle and/or a vehicle driving mode comprises:
If the position of a gear shifting handle of the vehicle is any gear in PND gears and/or the driving mode of the vehicle is a non-strong power mode, determining that the running mode of a transmission of the vehicle is an energy-saving running mode;
And if the position of the gear shifting handle is any gear in the RS gears and/or the vehicle driving mode is a strong power mode, determining that the transmission running mode is an aggressive running mode.
3. The method of claim 1, wherein if the target control mode is a neutral waiting control mode, controlling the shift flow valve based on the target control mode to effect control of transmission shifts comprises:
Closing a gear shifting pressure valve, and controlling the current to be positioned at a current point of a cut-off interval through the gear shifting flow valve;
Acquiring control time length of the control current flowing out of the gear-shifting flow valve;
if the control time length is greater than a time length threshold value, opening the gear shifting pressure valve to a preset opening degree;
and controlling the transmission to shift gears according to the current and the pressure generated by the shift pressure valve under the preset opening degree.
4. A method according to claim 3, comprising:
And when the vehicle exits the aggressive shifting mode, controlling the shifting pressure valve and the shifting flow valve to reset.
5. The method of claim 1, wherein if the target control mode is a low standby control mode, controlling the shift flow valve based on the target control mode to effect control of transmission shifts comprises:
closing a gear shifting pressure valve, and controlling current to be positioned at a zero current point through the gear shifting flow valve;
under the condition that the vehicle has a gear shifting requirement, the current is switched from the zero-position current point to a cut-off interval current point through the gear shifting flow valve;
And if the preparation time length of the current at the current point of the cut-off interval is greater than a time length threshold value, switching the transmission gear to a decision-determining gear through the control gear shifting pressure valve and the gear shifting flow valve.
6. The method of claim 5, wherein switching the current from the zero current point to a cut-off interval current point through the shift flow valve comprises:
Determining an expected running gear of the transmission according to the rotation speed of an output shaft of the transmission and the opening degree of an accelerator pedal;
determining the number of a gear shifting flow valve corresponding to the expected operation gear;
and switching the current from the zero current point to a cut-off interval current point through the gear-shifting flow valve corresponding to the number.
7. The method according to claim 5, comprising:
and under the condition that the current is at a zero current point, periodically lubricating the gear shifting flow valve based on a lubricating periodic table and a lubricating sequence of the gear shifting flow valve.
8. A transmission shift apparatus capable of performing the transmission shift method according to any one of claims 1 to 7, comprising:
A transmission mode determining module for determining a transmission operating mode of a vehicle according to a shift handle position of the vehicle and/or a vehicle driving mode;
The target control mode determining module is used for determining a target control mode of a gear shifting flow valve of the vehicle according to the transmission running mode;
and the transmission gear shifting control module is used for controlling the gear shifting flow valve based on the target control mode so as to realize the control of gear shifting of the transmission.
9. An electronic device, the electronic device comprising:
At least one processor; and
A memory communicatively coupled to the at least one processor; wherein,
The memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the transmission shift method of any one of claims 1-7.
10. A computer readable storage medium storing computer instructions for causing a processor to perform the transmission shift method of any one of claims 1-7 when executed.
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| US7084597B2 (en) * | 2002-06-03 | 2006-08-01 | Denso Corporation | Motor control apparatus |
| GB0307117D0 (en) * | 2003-03-27 | 2003-04-30 | Ricardo Uk Linmited | Method for controlling a transmission of a vehicle |
| EP3396213B1 (en) * | 2010-07-21 | 2019-10-30 | hofer mechatronik GmbH | Method for operating transmission hydraulics with a hydraulic control unit |
| CN105840808B (en) * | 2016-04-26 | 2019-03-12 | 中国第一汽车股份有限公司 | Shift control method for coordinating for wet-type double-clutch automatic speed-change device |
| CN107120427B (en) * | 2017-05-08 | 2018-10-30 | 安徽江淮汽车集团股份有限公司 | The control method and system of hydraulic shift actuator |
| CN109340366B (en) * | 2017-12-26 | 2019-08-02 | 长城汽车股份有限公司 | Flow valve control method and device |
| CN111692332B (en) * | 2019-03-12 | 2022-01-04 | 上海汽车变速器有限公司 | Adaptive control method for dead zone of control flow valve of shifting fork of wet-type double-clutch transmission |
| CN110206878B (en) * | 2019-04-29 | 2020-06-26 | 东风商用车有限公司 | Gear shifting control method for automatic gearbox of heavy-duty vehicle |
| CN110425275B (en) * | 2019-07-26 | 2021-11-30 | 中国第一汽车股份有限公司 | Transmission gear shifting control method |
| CN113236765B (en) * | 2021-05-12 | 2023-01-06 | 中国第一汽车股份有限公司 | Correcting method for neutral dead zone of gear shifting flow electromagnetic valve of transmission |
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