CN114412987B - Sliding gear sleeve gear-in control method and transmission - Google Patents
Sliding gear sleeve gear-in control method and transmission Download PDFInfo
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- CN114412987B CN114412987B CN202210077922.7A CN202210077922A CN114412987B CN 114412987 B CN114412987 B CN 114412987B CN 202210077922 A CN202210077922 A CN 202210077922A CN 114412987 B CN114412987 B CN 114412987B
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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
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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
- F16H61/04—Smoothing ratio shift
- F16H61/0403—Synchronisation before shifting
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Abstract
The invention relates to the technical field of transmissions, in particular to a sliding gear sleeve gear shifting control method and a transmission, wherein the sliding gear sleeve gear shifting control method comprises the following steps: controlling the gear shifting electromagnetic valve according to the first duty ratio; taking the rotating speed difference of the sliding gear sleeve corresponding to the moment corresponding to the first movement displacement as the advancing gear rotating speed difference of the sliding gear sleeve; determining a second duty ratio of the gear-entering electromagnetic valve required by the gear entering in the first stage and an in-place displacement set value of the gear-entering in-place judgment of the sliding gear sleeve; controlling the gear shifting electromagnetic valve according to the second duty ratio; determining a first speed set value for the sliding gear sleeve synchronization start judgment and a second speed set value for the sliding gear sleeve synchronization end judgment; and carrying out advancing tooth buffer control to finish the advancing gear control of the sliding tooth sleeve. The invention can improve the use condition of the gear shifting element, reduce the impact load and prolong the service life of the gear shifting element.
Description
Technical Field
The invention relates to the technical field of transmissions, in particular to a sliding gear sleeve gear-in control method and a transmission.
Background
The sliding gear sleeve gear shifting mode is widely applied to an Automatic Mechanical Transmission (AMT). In the process of gear shifting of the sliding gear sleeve, the state of the gear shifting of the sliding gear sleeve is random, the gear shifting force in the process of gear shifting of the sliding gear sleeve needs to be reasonably controlled, if the gear shifting force is unreasonable, the gear shifting can be carried out, the movement speed of the sliding gear sleeve is high when the gear shifting is finished, the high mechanical impact noise can be generated, and the failure problems of abnormal abrasion, breakage and the like of the gear shifting fork of the sliding gear sleeve due to the high gear shifting force can also be caused.
Because the pneumatic control has strong time lag and nonlinearity, the difficulty of controlling the gear shifting of the sliding gear sleeve based on the pneumatic actuator is increased, the problems of high gear shifting noise, gear shifting failure, failure of a gear shifting element and the like are easily generated, and the gear shifting quality of the AMT is influenced.
Therefore, a sliding sleeve gear-in control method and a transmission are needed to solve the above technical problems.
Disclosure of Invention
The invention aims to provide a sliding gear sleeve gear shifting control method and a transmission, which improve the service condition of a gear shifting element, reduce impact load, prolong the service life of the gear shifting element and further prolong the service life of an AMT transmission assembly.
In order to achieve the purpose, the invention adopts the following technical scheme:
a sliding gear sleeve gear-in control method comprises the following steps:
s1, determining a first duty ratio of a gear-entering electromagnetic valve for eliminating an idle stroke requirement;
s2, controlling the gear-shifting electromagnetic valve according to the first duty ratio;
s3, judging whether the first movement displacement of the sliding gear sleeve is larger than the idle stroke set value of the sliding gear sleeve judged by eliminating the idle stroke, and if so, performing the step 4; if not, returning to the step S1;
s4, taking the rotation speed difference of the sliding gear sleeve corresponding to the moment corresponding to the first movement displacement as the gear feeding rotation speed difference of the sliding gear sleeve;
s5, determining a second duty ratio of the gear-entering electromagnetic valve required by the gear entering in the first stage and an in-place displacement set value of the gear-entering in-place judgment of the sliding gear sleeve;
s6, controlling the gear-shifting electromagnetic valve according to the second duty ratio;
s7, determining a first speed set value for judging the synchronous start of the sliding gear sleeve and a second speed set value for judging the synchronous end of the sliding gear sleeve;
s8, judging whether the movement speed of the sliding gear sleeve is smaller than the first speed set value or not, and if so, performing the step S9;
s9, determining a first buffering displacement set value determined at the time of the sliding tooth sleeving in the tooth buffering;
s10, judging whether the movement displacement of the sliding gear sleeve is larger than the first buffering displacement set value or not, and if so, carrying out S11; if not, returning to S5;
and S11, performing gear feeding buffer control to complete gear feeding control of the sliding gear sleeve.
Optionally, in step S1, the first duty cycle is determined according to a transmission oil temperature and a target gear.
Optionally, in step S5, the second duty cycle and the set position displacement value are determined according to a transmission oil temperature, a target gear and the gear feed speed difference.
Optionally, in step S7, the first speed setting value and the second speed setting value are determined according to a transmission oil temperature, a target gear, and the difference between the gear-in rotational speeds.
Optionally, in step S9, the damping displacement set value is determined according to a transmission oil temperature, a target gear and a shift speed of the sliding gear sleeve.
Optionally, in step S8, if the moving speed of the sliding gear sleeve is not less than the first speed set value, the following steps are performed:
s12, judging whether the movement displacement of the sliding gear sleeve is not greater than the set value of the in-place displacement, if so, carrying out the gear feeding control of the rotating speed synchronization stage without the gear feeding in place, otherwise, carrying out the gear feeding control of the rotating speed synchronization stage with the gear feeding in place;
s13, judging whether the movement speed of the sliding gear sleeve is greater than the second speed set value or not, and if so, performing the step S14; if not, performing step S7;
s14, determining a third duty ratio of the gear shifting electromagnetic valve required by gear shifting in the second stage according to the oil temperature of the transmission and the target gear;
s15, controlling the gear shifting electromagnetic valve according to the determined third duty ratio;
s16, determining a second buffering displacement set value determined at the gear-in buffering time of the sliding gear sleeve according to the oil temperature of the transmission, the target gear and the gear-in speed of the sliding gear sleeve;
s17, judging whether the movement displacement of the sliding gear sleeve is larger than the second buffering displacement set value or not, and if so, performing the step S11; if not, go to step S14.
Optionally, the step S11 includes the following steps:
s1101: the duty ratio of the gear-entering electromagnetic valve is set to be 0;
s1102: judging whether the sliding gear sleeve is in place, if so, finishing gear shifting, otherwise, performing S1103;
s1103: judging whether the sliding gear sleeve stops moving or not, if so, performing S1104; if not, performing S1101;
s1104: determining a fourth duty ratio of the gear shifting electromagnetic valve required by gear shifting in a third stage according to the oil temperature of the transmission and the target gear;
s1105: controlling the gear shifting electromagnetic valve according to the determined fourth duty ratio;
s1106: and judging whether the sliding gear sleeve is in place, if so, finishing the gear shifting, and if not, performing S1104.
Optionally, in step S12, the step of controlling the gear advance in the rotating speed synchronization stage when the gear advance is in place includes the following steps:
s1201: determining a gear-entering stopping time set value and a gear-entering duration set value in the synchronous process of the sliding gear sleeve according to the oil temperature of the transmission, the target gear and the gear-entering rotating speed difference of the sliding gear sleeve;
s1202: the duty ratio of the gear-shifting electromagnetic valve is set to be 0, and a first duration value is recorded;
s1203: judging whether the first duration value is not greater than the tooth entering stopping time set value or not, if so, performing step S1204; if not, go to step S1202;
s1204: determining a fifth duty ratio of the gear entering electromagnetic valve required by gear entering in a rotating speed synchronization stage when gear entering is in place according to the oil temperature of the transmission and the target gear;
s1205: controlling the gear shifting electromagnetic valve according to the determined fifth duty ratio and recording a second duration value;
s1206: judging whether the second duration value is not greater than the tooth-entering stopping time set value or not, if so, performing step S1201; if not, go to step S1205.
Optionally, the step of controlling the gear advance in the rotating speed synchronization stage when the gear advance is not in place comprises the following steps:
and determining a sixth duty ratio of the gear entering electromagnetic valve required by the gear entering in the rotating speed synchronization stage without the gear entering in place, and controlling the gear entering electromagnetic valve according to the determined sixth duty ratio.
Optionally, the sixth duty cycle is determined from a transmission oil temperature, a target gear, and a difference in a gear feed speed of the sliding sleeve gear.
A transmission controls a sliding sleeve using the sliding sleeve gear-in control method as described above.
The invention has the beneficial effects that:
the invention provides a sliding gear sleeve gear-shifting control method, which comprises the steps of S1-S3, controlling a gear-shifting battery valve by utilizing a determined first duty ratio so that the sliding gear sleeve moves by a first movement displacement to eliminate the idle stroke of the sliding gear sleeve, then controlling the gear-shifting electromagnetic valve according to a second duty ratio of a gear-shifting electromagnetic valve required by gear shifting in a first stage and a position displacement set value judged by the gear shifting of the sliding gear sleeve in place, judging whether the movement speed of the sliding gear sleeve is smaller than a first speed set value or not, if so, determining a first buffer displacement set value, judging whether the movement displacement of the sliding gear sleeve is larger than the first buffer displacement set value or not, and if so, performing gear shifting buffer control until the gear shifting control of the sliding gear sleeve is completed. The sliding gear sleeve is divided into a neutral stroke stage, a first stage and a buffering stage, so that the sliding gear sleeve is smoothly shifted, the use condition of a shifting element is improved, the impact load is reduced, the service life of the shifting element is prolonged, and the service life of an AMT transmission assembly is prolonged.
According to the transmission provided by the invention, the sliding gear sleeve is controlled by adopting the sliding gear sleeve gear-in control method, and gear-in of the sliding gear sleeve is divided into a neutral stroke stage, a first stage and a buffering stage, so that gear-in of the sliding gear sleeve is smoothly carried out, the service condition of a gear-in element is improved, impact load is reduced, the service life of the gear-in element is prolonged, and the service life of an AMT transmission assembly is prolonged.
Drawings
Fig. 1 is a flowchart of a sliding gear sleeve shift control method of the present invention.
Detailed description of the preferred embodiments
The technical scheme of the invention is further explained by combining the attached drawings and the embodiment. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.
In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and encompass, for example, both fixed and removable connections unless otherwise explicitly stated or limited; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation that the first and second features are not in direct contact, but are in contact via another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
When the transmission shifts, the pneumatic control has strong time lag and nonlinearity, which also increases the difficulty of shifting control of the sliding gear sleeve based on the pneumatic actuator, and easily causes the problems of high shifting noise, failed shifting, failure of the shifting element and the like, thereby affecting the shifting quality of the AMT.
In order to solve the above problems, thereby improving the use condition of the shift input element and reducing the impact load, and increasing the service life of the shift input element, and thus increasing the service life of the AMT transmission assembly, as shown in fig. 1, the present invention provides a sliding gear sleeve shift control method. The sliding gear sleeve gear-in control method comprises the following steps:
s1, determining a first duty ratio of a gear-in electromagnetic valve for eliminating a neutral stroke requirement;
s2, controlling the gear-shifting electromagnetic valve according to the first duty ratio;
s3, judging whether the first movement displacement of the sliding gear sleeve is larger than an idle stroke set value of the sliding gear sleeve judged by eliminating the idle stroke, and if so, performing the step 4; if not, returning to the step S1;
s4, taking the rotating speed difference of the sliding gear sleeve corresponding to the moment corresponding to the first movement displacement as the gear feeding rotating speed difference of the sliding gear sleeve;
s5, determining a second duty ratio of the gear-entering electromagnetic valve required by the gear entering in the first stage and an in-place displacement set value for gear-entering in-place judgment of the sliding gear sleeve;
s6, controlling the gear-shifting electromagnetic valve according to a second duty ratio;
s7, determining a first speed set value for judging the synchronous start of the sliding gear sleeve and a second speed set value for judging the synchronous end of the sliding gear sleeve;
s8, judging whether the movement speed of the sliding gear sleeve is smaller than a first speed set value or not, and if so, performing the step S9;
s9, determining a first buffering displacement set value determined when the sliding gear is sleeved in the gear buffering time;
s10, judging whether the movement displacement of the sliding gear sleeve is larger than a first buffering displacement set value or not, and if so, carrying out S11; if not, returning to S5;
and S11, performing gear advance buffer control to complete gear advance control of the sliding gear sleeve.
Specifically, step S11 includes the following steps:
s1101: the duty ratio of the gear-shifting electromagnetic valve is set to be 0;
s1102: judging whether the sliding gear sleeve is in place, if so, finishing the gear shifting, and if not, performing S1103;
s1103: judging whether the sliding gear sleeve stops moving or not, if so, performing S1104; if not, performing S1101;
s1104: determining a fourth duty ratio of a gear shifting electromagnetic valve required by gear shifting in the third stage according to the oil temperature of the transmission and the target gear;
s1105: controlling the gear shifting electromagnetic valve according to the determined fourth duty ratio;
s1106: and judging whether the sliding gear sleeve is in place, if so, finishing the gear shifting, and if not, performing S1104.
Controlling a gear-in battery valve by using the determined first duty ratio through the steps S1-S3, so that the idle stroke of the sliding gear sleeve is eliminated when the sliding gear sleeve moves by first movement displacement, then controlling the gear-in electromagnetic valve according to the second duty ratio of the gear-in electromagnetic valve required by the gear-in the first stage and the in-place displacement set value judged when the sliding gear sleeve is in gear-in position, judging whether the movement speed of the sliding gear sleeve is smaller than the first speed set value, if so, determining a first buffer displacement set value, judging whether the movement displacement of the sliding gear sleeve is larger than the first buffer displacement set value, and if so, performing gear-in buffer control until the gear-in control of the sliding gear sleeve is completed. The sliding gear sleeve is divided into a neutral stroke stage, a first stage and a buffering stage, so that the sliding gear sleeve is smoothly shifted, the use condition of a shifting element is improved, the impact load is reduced, the service life of the shifting element is prolonged, and the service life of an AMT transmission assembly is prolonged.
Optionally, in step S1, a first duty cycle is determined according to the transmission oil temperature and the target gear. Through the mode, the determined first duty ratio can be guaranteed to meet the requirement of eliminating idle stroke in the actual gear shifting process, so that the smoothness in the gear shifting process is guaranteed, and the unreasonable gear shifting control is avoided.
Optionally, in step S5, a second duty cycle and a set point of the target shift position are determined according to the transmission oil temperature, the target gear and the gear advance rotation speed difference. Through the mode, the determined second duty ratio can be guaranteed to meet the requirement of first-stage gear shifting in the actual gear shifting process, so that the smoothness in the gear shifting process is guaranteed, and the unreasonable gear shifting control is avoided.
Alternatively, in step S7, the first speed set point and the second speed set point are determined according to the transmission oil temperature, the target gear, and the gear advance rotation speed difference. Through the mode, the first speed set value and the second speed set value which are determined can be guaranteed to meet the requirement of speed control in the actual gear shifting process, so that the smoothness in the gear shifting process is guaranteed, the phenomenon that when gear shifting is finished, the sliding gear sleeve moves at a high speed to cause high mechanical impact noise is avoided, meanwhile, the service condition of the gear shifting element is improved, impact load is reduced, the service life of the gear shifting element is prolonged, and the service life of the AMT transmission assembly is prolonged.
Alternatively, in step S9, the damping displacement set value is determined based on the transmission oil temperature, the target gear, and the shift speed of the sliding sleeve gear. Through the mode, the determined buffering displacement set value can be guaranteed to meet the requirement of speed control in the actual gear shifting process, so that the smoothness in the gear shifting process is guaranteed, and the phenomenon that the sliding gear sleeve has high movement speed and generates large mechanical impact noise when the gear shifting is finished is avoided.
Alternatively, in step S8, if the moving speed of the sliding gear sleeve is not less than the first speed set value, the following steps are performed:
s12, judging whether the movement displacement of the sliding gear sleeve is not greater than a set value of in-place displacement, and if so, carrying out gear entering control at a rotating speed synchronization stage when the gear is not in place; if not, carrying out the gear feeding control at the rotating speed synchronization stage of the gear feeding in place;
s13, judging whether the movement speed of the sliding gear sleeve is greater than a second speed set value or not, and if so, performing the step S14; if not, performing step S7;
s14, determining a third duty ratio of a gear shifting electromagnetic valve required by gear shifting in the second stage according to the oil temperature of the transmission and the target gear;
s15, controlling the gear-shifting electromagnetic valve according to the determined third duty ratio;
s16, determining a second buffering displacement set value determined at the buffering time of the sliding gear sleeve according to the oil temperature of the transmission, the target gear and the gear shifting speed of the sliding gear sleeve;
s17, judging whether the movement displacement of the sliding gear sleeve is larger than a second buffering displacement set value or not, and if so, performing the step S11; if not, go to step S14.
And the gear feeding control of the sliding gear sleeve is completed by adding the second-stage gear feeding to the control of the gear feeding electromagnetic valve and the sliding gear sleeve and judging whether the movement displacement of the sliding gear sleeve is greater than a second buffering displacement set value or not, and if so, the gear feeding buffering control is performed. Through increasing second stage and second buffering stage for the entering of slip tooth cover is carried out smoothly, thereby has improved the service condition of entering the fender component and has reduced impact load, improves the life of entering the fender component, thereby improves the life-span of AMT derailleur assembly.
Optionally, in step S12, the step of controlling the gear advance in the rotating speed synchronization stage when the gear advance is in place includes the following steps:
s1201: determining a gear-entering stopping time set value and a gear-entering duration set value in the synchronous process of the sliding gear sleeve according to the oil temperature of the transmission, the target gear and the gear-entering rotating speed difference of the sliding gear sleeve;
s1202: setting the duty ratio of the gear-shifting electromagnetic valve to be 0 and recording a first duration value;
s1203: judging whether the first duration value is not greater than a gear-entering stopping time set value or not, if so, performing step S1204; if not, go to step S1202;
s1204: determining a fifth duty ratio of a gear entering electromagnetic valve required by gear entering in a rotating speed synchronization stage when the gear entering is in place according to the oil temperature of the transmission and the target gear;
s1205: controlling the gear shifting electromagnetic valve according to the determined fifth duty ratio and recording a second duration value;
s1206: judging whether the second duration value is not greater than a tooth-entering stopping time set value or not, if so, performing step S1201; if not, go to step S1205. Through the mode, the gear feeding control in the rotating speed synchronization stage of the in-place gear feeding can be effectively carried out.
Optionally, in step S12, the step of controlling the gear advance in the rotation speed synchronization stage when the gear advance is not in place includes the following steps:
and determining a sixth duty ratio of the gear-entering electromagnetic valve required by gear entering in the rotating speed synchronization stage without the gear entering in place according to the oil temperature of the transmission, the target gear and the gear-entering rotating speed difference of the sliding gear sleeve, and controlling the gear-entering electromagnetic valve according to the determined sixth duty ratio. By the aid of the mode, the gear feeding control can be effectively performed in the rotating speed synchronization stage when the gear is not fed in place.
The embodiment also provides a transmission, and the sliding gear sleeve is controlled by using the sliding gear sleeve gear-in control method. The sliding gear sleeve is divided into a neutral stroke stage, a first stage and a buffering stage, so that the sliding gear sleeve is smoothly shifted, the use condition of a shifting element is improved, the impact load is reduced, the service life of the shifting element is prolonged, and the service life of an AMT transmission assembly is prolonged.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (11)
1. A sliding gear sleeve gear-in control method is characterized by comprising the following steps:
s1, determining a first duty ratio of a gear-in electromagnetic valve for eliminating a neutral stroke requirement;
s2, controlling the gear shifting electromagnetic valve according to the first duty ratio;
s3, judging whether the first movement displacement of the sliding gear sleeve is larger than the idle stroke set value of the sliding gear sleeve judged by eliminating the idle stroke, and if so, performing the step 4; if not, returning to the step S1;
s4, taking the rotation speed difference of the sliding gear sleeve corresponding to the moment corresponding to the first movement displacement as the gear feeding rotation speed difference of the sliding gear sleeve;
s5, determining a second duty ratio of the gear-entering electromagnetic valve required by the gear entering in the first stage and an in-place displacement set value of the gear-entering in-place judgment of the sliding gear sleeve;
s6, controlling the gear shifting electromagnetic valve according to the second duty ratio;
s7, determining a first speed set value for judging the synchronous start of the sliding gear sleeve and a second speed set value for judging the synchronous end of the sliding gear sleeve;
s8, judging whether the movement speed of the sliding gear sleeve is smaller than the first speed set value or not, and if so, performing the step S9;
s9, determining a first buffering displacement set value determined at the time of the sliding tooth sleeving in the tooth buffering;
s10, judging whether the movement displacement of the sliding gear sleeve is larger than the first buffering displacement set value or not, and if so, carrying out S11; if not, returning to S5;
and S11, performing gear feeding buffer control to complete gear feeding control of the sliding gear sleeve.
2. The method for controlling a sliding sleeve gear according to claim 1, wherein in step S1, the first duty ratio is determined according to a transmission oil temperature and a target gear.
3. The sliding sleeve gear step control method according to claim 1, wherein in step S5, the second duty cycle and the target bit shift set value are determined according to a transmission oil temperature, a target gear and the gear-in speed difference.
4. The method of claim 1, wherein the first speed setting and the second speed setting are determined in step S7 based on a transmission oil temperature, a target gear, and the difference in the entering gear speed.
5. The sliding sleeve gear shifting control method according to claim 1, wherein in step S9, the damping displacement set value is determined according to a transmission oil temperature, a target gear and a gear shifting speed of the sliding sleeve gear.
6. The method for controlling a step of moving a sliding sleeve gear according to claim 1, wherein in step S8, if the moving speed of the sliding sleeve gear is not less than the first speed set value, the following steps are performed:
s12, judging whether the movement displacement of the sliding gear sleeve is not greater than the set value of the in-place displacement, if so, carrying out the gear entering control of the rotating speed synchronization stage without the gear entering in place, otherwise, carrying out the gear entering control of the rotating speed synchronization stage with the gear entering in place;
s13, judging whether the movement speed of the sliding gear sleeve is greater than the second speed set value or not, and if so, performing the step S14; if not, performing step S7;
s14, determining a third duty ratio of the gear shifting electromagnetic valve required by gear shifting in the second stage according to the oil temperature of the transmission and the target gear;
s15, controlling the gear shifting electromagnetic valve according to the determined third duty ratio;
s16, determining a second buffering displacement set value determined at the gear-in buffering time of the sliding gear sleeve according to the oil temperature of the transmission, the target gear and the gear-in speed of the sliding gear sleeve;
s17, judging whether the movement displacement of the sliding gear sleeve is larger than the second buffering displacement set value or not, and if so, performing the step S11; if not, go to step S14.
7. The method for controlling a sliding sleeve gear according to claim 1, wherein the step S11 includes the steps of:
s1101: the duty ratio of the gear-shifting electromagnetic valve is set to be 0;
s1102: judging whether the sliding gear sleeve is in place, if so, finishing the gear shifting, and if not, performing S1103;
s1103: judging whether the sliding gear sleeve stops moving or not, if so, performing S1104; if not, performing S1101;
s1104: determining a fourth duty ratio of the gear shifting electromagnetic valve required by gear shifting in a third stage according to the oil temperature of the transmission and the target gear;
s1105: controlling the gear shifting electromagnetic valve according to the determined fourth duty ratio;
s1106: and judging whether the sliding gear sleeve is in place, if so, finishing the gear shifting, and if not, performing S1104.
8. The sliding gear sleeve gear shifting control method according to claim 6, wherein the step S12 of controlling the gear shifting in the rotating speed synchronization stage when the gear shifting is in place comprises the following steps:
s1201: determining a gear-entering stopping time set value and a gear-entering duration set value in the synchronous process of the sliding gear sleeve according to the oil temperature of the transmission, the target gear and the gear-entering rotating speed difference of the sliding gear sleeve;
s1202: setting the duty ratio of the gear-in electromagnetic valve to be 0 and recording a first duration value;
s1203: judging whether the first duration value is not greater than the gear-entering stopping time set value or not, if so, performing step S1204; if not, go to step S1202;
s1204: determining a fifth duty ratio of the gear entering electromagnetic valve required by gear entering in a rotating speed synchronization stage when the gear entering is in place according to the oil temperature of the transmission and the target gear;
s1205: controlling the gear shifting electromagnetic valve according to the determined fifth duty ratio and recording a second duration value;
s1206: judging whether the second duration value is not greater than the tooth-entering stopping time set value or not, if so, performing step S1201; if not, go to step S1205.
9. The sliding gear sleeve gear-in control method as claimed in claim 6, wherein the rotating speed synchronous stage gear-in control without gear-in-place comprises the following steps:
and determining a sixth duty ratio of the gear entering electromagnetic valve required by the gear entering in the rotating speed synchronization stage without the gear entering in place, and controlling the gear entering electromagnetic valve according to the determined sixth duty ratio.
10. The sliding sleeve gear shifting control method according to claim 9, wherein the sixth duty cycle is determined according to a transmission oil temperature, a target gear, and a gear shifting speed difference of the sliding sleeve gear.
11. A transmission characterized in that a sliding sleeve gear is controlled using the sliding sleeve gear step control method according to any one of claims 1 to 10.
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| CN115899244A (en) * | 2022-11-03 | 2023-04-04 | 一汽解放汽车有限公司 | Solenoid valve control method, solenoid valve control device, computer device, medium, and program product |
| CN115875444B (en) * | 2023-02-03 | 2024-05-31 | 一汽解放汽车有限公司 | Sliding gear sleeve gear-entering control method and device, transmission and storage medium |
Citations (3)
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| DE102015120465A1 (en) * | 2014-12-15 | 2016-06-16 | Hyundai Autron Co., Ltd. | Method and device for controlling a vehicle transmission |
| CN109237015A (en) * | 2018-09-05 | 2019-01-18 | 汽解放汽车有限公司 | A kind of commercial vehicle pneumatic control AMT shift of transmission synchronizing process control method |
| CN113007341A (en) * | 2021-04-28 | 2021-06-22 | 一汽解放汽车有限公司 | Sliding gear sleeve gear shifting control method based on electric gear shifting actuator and vehicle |
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2022
- 2022-01-24 CN CN202210077922.7A patent/CN114412987B/en active Active
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| DE102015120465A1 (en) * | 2014-12-15 | 2016-06-16 | Hyundai Autron Co., Ltd. | Method and device for controlling a vehicle transmission |
| CN109237015A (en) * | 2018-09-05 | 2019-01-18 | 汽解放汽车有限公司 | A kind of commercial vehicle pneumatic control AMT shift of transmission synchronizing process control method |
| CN113007341A (en) * | 2021-04-28 | 2021-06-22 | 一汽解放汽车有限公司 | Sliding gear sleeve gear shifting control method based on electric gear shifting actuator and vehicle |
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| CN114412987A (en) | 2022-04-29 |
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