CN117847201A - Gear shifting process control method of three-gear transmission and three-gear transmission - Google Patents
Gear shifting process control method of three-gear transmission and three-gear transmission Download PDFInfo
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- CN117847201A CN117847201A CN202311753196.7A CN202311753196A CN117847201A CN 117847201 A CN117847201 A CN 117847201A CN 202311753196 A CN202311753196 A CN 202311753196A CN 117847201 A CN117847201 A CN 117847201A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 84
- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000004886 process control Methods 0.000 title claims abstract description 15
- 239000003921 oil Substances 0.000 claims abstract description 42
- 238000004590 computer program Methods 0.000 claims abstract description 8
- 239000012208 gear oil Substances 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 230000007935 neutral effect Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000009347 mechanical transmission Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
A three-gear transmission gear shifting process control method and a three-gear transmission, the method comprises the steps that S1, whether the three-gear transmission is in a gear shifting process of upshift or downshift is detected, and when the three-gear transmission is detected to be in the gear shifting process of upshift or downshift, step S2 is carried out; when starting gear shifting, entering a step S6; s2, recording the current gear turbine speed of the three-gear transmission, and calculating the target gear turbine speed; s3, draining oil from the clutch of the current gear in a given time, and simultaneously sending a torque clearing command to the motor through a CAN bus; s4, continuously sending a rotation speed adjusting command to the motor through the CAN bus, filling oil to the target gear clutch, and stopping sending the rotation speed adjusting command when the rotation speed reaches the target rotation speed; s5, calculating a speed ratio, and when the target gear speed ratio is reached, exiting the gear shifting process; s6, shifting firstly, filling oil into a target gear oil cylinder, and stepping on the accelerator carriage. The steps in the three-speed transmission shift process control method described above are implemented when a computer program provided in the three-speed transmission is executed by the control device.
Description
Technical Field
The invention relates to a transmission gear shifting control method and the technical field of transmissions, in particular to a three-gear transmission gear shifting process control method and a three-gear transmission.
Background
At present, an AMT (automated mechanical transmission) and a mechanical transmission are mostly adopted for a 100-ton electrically-driven wide-body mine car transmission, so that the problems that the power is low, the gear shifting success rate of a synchronizer is low, the starting gear shifting impact is large, the potential safety hazard in the whole car operation process is caused, the requirement for use of pull-down fast running is not met, and the like exist in a severe operation environment, the vehicle debugging time is too long, after the market is sent, the gear shifting quality is poor when a customer runs for the first time, the gear shifting on a slope or heavy load is successful, and the customer experience is poor.
In terms of a clutch oil pressure control system of a transmission, a clutch oil pressure control system for a transmission is disclosed in the prior art, such as in patent application publication number CN115199669a, and an original gear can be maintained during power failure through arrangement of a gear locking electromagnetic valve and a related oil path, so that a gear locking function is realized. The neutral gear can be returned when the power is off, the neutral gear locking function is realized, and the control schematic diagram is shown in fig. 4.
The clutch oil pressure control system of the above prior art can be used in the control of a three-speed transmission, but the above prior art does not disclose a shift process control method for a three-speed transmission.
Disclosure of Invention
The invention mainly aims to provide a three-gear transmission gear shifting process control method and a three-gear transmission, and aims to solve the technical problems.
In order to achieve the above object, in one aspect, the present invention provides a method for controlling a shift process of a three-gear transmission, comprising the steps of:
s1, detecting whether a three-gear transmission is in a gear shifting process of upshift or downshift, and entering a step S2 when the three-gear transmission is detected to be in the gear shifting process of upshift or downshift; when starting gear shifting, entering a step S6;
s2, recording the current gear turbine speed of the three-gear transmission, and calculating the target gear turbine speed;
s3, draining oil from the current gear clutch in a given time, simultaneously sending a torque clearing command to the motor through a CAN bus, and then entering a step S4;
s4, continuously sending a rotation speed adjusting command to the motor through the CAN bus, filling oil to the target gear clutch, stopping sending the rotation speed adjusting command when the rotation speed reaches the target rotation speed calculated in the step S2, and then entering the step S5;
s5, calculating a speed ratio, and when the target gear speed ratio is reached, exiting the gear shifting process;
s6, shifting firstly, filling oil into a target gear oil cylinder, and stepping on the accelerator carriage.
Preferably, in the step S2, the target gear turbine speed=the current gear turbine speed×; the speed ratio is equal to the three speed transmission turbine speed divided by the output shaft speed, i.e., speed ratio = turbine speed/output shaft speed.
Preferably, in said step S3, the given time is set to: the upshift process is 30ms and the downshift process is 60ms.
On the other hand, the invention also provides a three-gear transmission, which comprises a transmission body, and an electronic control unit and a control device which are arranged on the transmission body, wherein the electronic control unit is internally provided with a computer readable storage medium, a computer program is stored in the computer readable storage medium, and the steps in the gear shifting process control method of the three-gear transmission are realized when the computer program is executed by the control device.
Preferably, a turbine rotational speed sensor and an output rotational speed sensor are disposed in the transmission body, the turbine rotational speed sensor is used for measuring the turbine rotational speed of the input end of the three-gear transmission, and the output rotational speed sensor is used for measuring the output shaft rotational speed of the three-gear transmission and sending the detected data of the turbine rotational speed and the output shaft rotational speed to the electronic control unit.
Preferably, the maximum input power of the transmission body is 800kW, and the maximum input torque is 5500 N.m.
Preferably, a hydraulic control valve body and an external electric oil pump are arranged on the transmission body, and the hydraulic control valve body is used for controlling the oil way switching and the oil pressure shifting part in the three-gear transmission to act so as to realize speed change; the external electric oil pump is used for providing liquid flow with certain pressure and flow rate for the hydraulic control valve body.
Preferably, the hydraulic control valve body comprises four electromagnetic valves, the four electromagnetic valves are respectively used for receiving control signals from the electronic control unit to adjust the oil pressure shifting component, and the electromagnetic valves are 24V switching electromagnetic valves.
Preferably, the hydraulic control valve body comprises a cylinder penetrating connector, the cylinder penetrating connector is connected with the electromagnetic valve and the electronic control unit, and the cylinder penetrating connector receives a control signal from the electronic control unit and controls the opening and closing of the electromagnetic valve.
Preferably, the external electric oil pump provides a main oil pressure of 1.4-1.8 Mpa and a flow rate of 80L/min.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
(1) The three-gear transmission gear shifting process control method provided by the invention has the advantages that the torque and the rotating speed of the motor are regulated through the CAN bus in the gear shifting process, the function is only executed in the gear shifting up and gear shifting down, the triggering of the function has two conditions, one is the gear shifting process, the other is limited to the gear shifting up and gear shifting down, and the other gear shifting processes are not involved. After the program function is executed, the gear shifting quality of the vehicle is good.
(2) The three-gear transmission provided by the invention is provided with the electronic control unit and the control device, the electronic control unit is internally provided with the computer readable storage medium, the computer program is stored in the computer readable storage medium, and the steps in the gear shifting process control method of the three-gear transmission are realized when the computer program is executed by the control device, so that the three-gear transmission not only ensures the gear shifting quality of starting of a vehicle, but also ensures the gear shifting quality among forward gears.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for controlling a shift process of a three speed transmission provided by the present invention;
FIG. 2 is a schematic diagram of a three speed transmission according to the present invention;
FIG. 3 is a schematic diagram of a three speed transmission according to the present invention;
FIG. 4 is a schematic diagram of a clutch oil pressure control system of the prior art;
fig. 5 is a gear control logic diagram.
Reference numerals illustrate: 1. the external electric oil pump, 2, output rotation speed sensor, 3, wear jar connector, 4, derailleur body, 5, turbine rotation speed sensor, 6 hydraulic control valve body, 7, electronic control unit.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
Referring to fig. 1, in one aspect, the present embodiment proposes a shift process control method for a three-gear transmission, including the following steps:
s1, detecting whether a three-gear transmission is in a gear shifting process of upshift or downshift, and entering a step S2 when the three-gear transmission is detected to be in the gear shifting process of upshift or downshift; when starting gear shifting, entering a step S6;
s2, recording the current gear turbine speed of the three-gear transmission, and calculating the target gear turbine speed; target gear turbine speed = current gear turbine speed x target gear speed ratio/current gear speed ratio; the speed ratio is equal to the three speed transmission turbine speed divided by the output shaft speed, i.e., speed ratio = turbine speed/output shaft speed;
s3, draining oil from the current gear clutch in a given time, simultaneously sending a torque clearing command to the motor through a CAN bus, and then entering a step S4;
s4, continuously sending a rotation speed adjusting command to the motor through the CAN bus, filling oil to the target gear clutch, stopping sending the rotation speed adjusting command when the rotation speed reaches the target rotation speed calculated in the step S2, and then entering the step S5;
s5, calculating a speed ratio, and when the target gear speed ratio is reached, exiting the gear shifting process;
s6, shifting firstly, filling oil into a target gear oil cylinder, and stepping on the accelerator carriage.
Further, in the step S3, the given time is set to: the upshift process is 30ms and the downshift process is 60ms.
As shown in fig. 2 to 3, on the other hand, the present embodiment also proposes a three-speed transmission, including a transmission body 4, and an electronic control unit 7 and a control device provided on the transmission body 4, wherein the electronic control unit 7 has a computer readable storage medium, and a computer program is stored in the computer readable storage medium, and the computer program when executed by the control device implements the steps in the three-speed transmission gear shifting process control method according to any one of claims 1 to 3.
Specifically, the control device comprises a judging module and a control module, wherein the judging module is used for acquiring whether the three-gear transmission is in a gear shifting process of upshift or downshift and judging whether a gear shifting instruction occurs; and the control module is used for controlling the motor to run according to the gear shifting instruction, filling oil into the corresponding gear clutch and executing gear shifting operation. The conventional structure of the control device is not described here in detail.
As shown in fig. 2 and 3, a turbine speed sensor 5 and an output speed sensor 2 are disposed in the transmission body 4, the turbine speed sensor 5 is used for measuring the turbine speed of the input end of the three-gear transmission, and the output speed sensor 2 is used for measuring the output shaft speed of the three-gear transmission, and sending the detected data of the turbine speed and the output shaft speed to the electronic control unit 7. The maximum input power of the transmission body 4 is 800kW, and the maximum input torque is 5500n·m.
Further, a hydraulic control valve body 6 and an external electric oil pump 1 are arranged on the transmission body 4, wherein the hydraulic control valve body 6 is used for controlling the switching of all oil ways and the action of oil pressure shifting parts in the three-gear transmission so as to realize speed change; the external electric oil pump 1 is used for providing liquid flow with certain pressure and flow rate for the hydraulic control valve body 6, and the external electric oil pump 1 provides a main oil pressure of 1.4-1.8 Mpa and a flow rate of 80L/min.
As shown in fig. 4, the clutch oil pressure control system of the prior art can be applied to the three-speed transmission of the present embodiment, so the hydraulic control valve body 6 includes four solenoid valves, which are respectively used for receiving control signals from the electronic control unit 7 to adjust the oil pressure shifting unit, and the solenoid valves are 24V on-off solenoid valves. The four solenoid valves are respectively a neutral gear solenoid valve A, a solenoid valve B for controlling a low gear oil cylinder, a solenoid valve C for controlling a middle gear oil cylinder and a solenoid valve D for controlling a high gear oil cylinder. The specific structure of the clutch oil pressure control system will not be described in detail.
In this embodiment, the gear control logic table is specifically shown in fig. 5.
In this embodiment, the hydraulic control valve body 6 includes a through-cylinder connector 3, and the through-cylinder connector 3 connects the solenoid valve with the electronic control unit 7, and the through-cylinder connector 3 receives a control signal from the electronic control unit 7 and controls the opening and closing of the solenoid valve.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather, the equivalent structural changes made by the description of the present invention and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (10)
1. A method for controlling a shift process of a three-speed transmission, comprising the steps of:
s1, detecting whether a three-gear transmission is in a gear shifting process of upshift or downshift, and entering a step S2 when the three-gear transmission is detected to be in the gear shifting process of upshift or downshift; when starting gear shifting, entering a step S6;
s2, recording the current gear turbine speed of the three-gear transmission, and calculating the target gear turbine speed;
s3, draining oil from the current gear clutch in a given time, simultaneously sending a torque clearing command to the motor through a CAN bus, and then entering a step S4;
s4, continuously sending a rotation speed adjusting command to the motor through the CAN bus, filling oil to the target gear clutch, stopping sending the rotation speed adjusting command when the rotation speed reaches the target rotation speed calculated in the step S2, and then entering the step S5;
s5, calculating a speed ratio, and when the target gear speed ratio is reached, exiting the gear shifting process;
s6, shifting firstly, filling oil into a target gear oil cylinder, and stepping on the accelerator carriage.
2. A three-speed transmission shift process control method according to claim 1, characterized in that in said step S2, a target gear turbine speed = current gear turbine speed× (target gear speed ratio/current gear speed ratio); the speed ratio is equal to the three speed transmission turbine speed divided by the output shaft speed, i.e., speed ratio = turbine speed/output shaft speed.
3. A three-speed transmission shift process control method according to claim 1, wherein in said step S3, a given time is set to: the upshift process is 30ms and the downshift process is 60ms.
4. A three-speed transmission, comprising a transmission body (4), and an electronic control unit (7) and a control device arranged on the transmission body (4), characterized in that: the electronic control unit (7) has a computer-readable storage medium in which a computer program is stored, which when executed by a control device, implements the steps of the three-speed transmission shift process control method according to any one of claims 1 to 3.
5. A three-speed transmission according to claim 4, characterized in that a turbine speed sensor (5) and an output speed sensor (2) are provided in the transmission body (4), the turbine speed sensor (5) being arranged to measure the turbine speed at the input of the three-speed transmission, the output speed sensor (2) being arranged to measure the output shaft speed of the three-speed transmission and to send data of the detected turbine speed and output shaft speed to the electronic control unit (7).
6. A three speed transmission according to claim 4, characterized in that the maximum input power of the transmission body (4) is 800kW and the maximum input torque is 5500N-m.
7. A three-speed transmission according to claim 4, characterized in that a hydraulic control valve body (6) and an external electric oil pump (1) are arranged on the transmission body (4), and the hydraulic control valve body (6) is used for controlling the oil way switching and the oil pressure shifting component action in the three-speed transmission so as to realize speed change; the external electric oil pump (1) is used for providing liquid flow with certain pressure and flow rate for the hydraulic control valve body (6).
8. A three-speed transmission according to claim 7, characterized in that the hydraulic control valve body (6) comprises four solenoid valves, each for receiving control signals from the electronic control unit (7) for adjusting the oil pressure shifting member, the solenoid valves being 24V on-off solenoid valves.
9. A three speed transmission according to claim 8, wherein the hydraulic control valve body (6) comprises a through-cylinder connector (3), the through-cylinder connector (3) connecting the solenoid valve with the electronic control unit (7), the through-cylinder connector (3) receiving a control signal from the electronic control unit (7) and controlling the opening and closing of the solenoid valve.
10. A three-speed transmission according to claim 7, wherein the external electric oil pump (1) provides a main oil pressure of 1.4-1.8 Mpa and a flow rate of 80L/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311753196.7A CN117847201A (en) | 2023-12-19 | 2023-12-19 | Gear shifting process control method of three-gear transmission and three-gear transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311753196.7A CN117847201A (en) | 2023-12-19 | 2023-12-19 | Gear shifting process control method of three-gear transmission and three-gear transmission |
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| Publication Number | Publication Date |
|---|---|
| CN117847201A true CN117847201A (en) | 2024-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311753196.7A Pending CN117847201A (en) | 2023-12-19 | 2023-12-19 | Gear shifting process control method of three-gear transmission and three-gear transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117847201A (en) |
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2023
- 2023-12-19 CN CN202311753196.7A patent/CN117847201A/en active Pending
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