CN109414993B - Motor vehicle and torque control method thereof - Google Patents
Motor vehicle and torque control method thereof Download PDFInfo
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- CN109414993B CN109414993B CN201780035372.XA CN201780035372A CN109414993B CN 109414993 B CN109414993 B CN 109414993B CN 201780035372 A CN201780035372 A CN 201780035372A CN 109414993 B CN109414993 B CN 109414993B
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- 238000000034 method Methods 0.000 title claims abstract description 41
- 230000006870 function Effects 0.000 claims description 10
- 238000011084 recovery Methods 0.000 claims description 8
- 238000004590 computer program Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 3
- 230000001133 acceleration Effects 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
- 230000010485 coping Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/10—Vehicle control parameters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/10—Vehicle control parameters
- B60L2240/12—Speed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
A motor vehicle and a torque control method thereof, the torque control method of the motor vehicle comprises the following steps: s101: acquiring speed information, accelerator state information and brake state information of the motor vehicle; s102: judging working condition information corresponding to the motor vehicle according to the speed information, the accelerator state information and the brake state information; s103: and outputting corresponding torque according to the working condition information. The method collects different working conditions of the motor vehicle in different motion states, and designs corresponding torque output aiming at each different working condition, so that a comprehensive and effective corresponding mode is provided for the motor vehicle, and further user experience is improved.
Description
Technical Field
The invention relates to the field of motor vehicles, in particular to a motor vehicle and a torque control method thereof.
Background
The pure electric vehicle has a great development in the last two decades due to the characteristics that the pure electric vehicle does not depend on fossil fuel and the zero emission of pollutants is realized in the driving process, however, because the traditional fuel vehicle occupies almost all the automobile market once, the new energy vehicle is mostly modified at the beginning of design, and the functions, the usability and the layout in the vehicle are based on the traditional vehicle in the last year.
When a motor vehicle is driven on a road with a slope, many situations occur during driving, starting and stopping. Firstly, considering the situation of slope starting, the situation of slope starting and vehicle slipping is a very dangerous situation, and can cause damage to people and vehicles behind the vehicles, so in order to prevent the occurrence of slope slipping, on the vehicles without the function of slope stopping, a driver can only pull up the hand brake first, then release the brake, then rapidly step on the accelerator, and rapidly put down the hand brake when a certain forward speed is reached. However, various unexpected situations are likely to occur in this complicated operation. In addition, the brake failure is easily caused by frequently stepping on the brake in the long downhill section. That is, the prior art motor vehicles (including electric vehicles and hybrid vehicles) have the following disadvantages: the different operating conditions of the motor vehicle in different motion states are not fully considered, and therefore an effective coping manner cannot be provided for all possible situations.
Disclosure of Invention
The invention mainly solves the technical problem of providing a motor vehicle and a torque control method thereof, and provides a comprehensive and effective coping way aiming at different working conditions of the motor vehicle in different motion states.
In order to solve the technical problems, the first technical scheme adopted by the invention is as follows: provided is a torque control method of a motor vehicle, including: acquiring speed information, accelerator state information and brake state information of the motor vehicle; judging working condition information corresponding to the motor vehicle according to the speed information, the accelerator state information and the brake state information; outputting corresponding torque according to the working condition information; if the speed of the motor vehicle does not exceed a first preset speed and neither an accelerator nor a brake is stepped on, the corresponding working condition information is first working condition information, and a first torque is output according to the first working condition information; if the speed of the motor vehicle does not exceed the first preset speed, the brake is stepped on and the accelerator is not stepped on, the corresponding working condition information is third working condition information, and a third torque is output according to the third working condition information; the outputting a third torque according to the third operating condition information comprises: outputting a third torque according to the opening information of the brake; if the brake opening degree does not exceed a first brake opening degree, the third torque is equal to the first torque; if the opening degree of the brake exceeds a second brake opening degree, the third torque is zero, wherein the second brake opening degree is larger than the first brake opening degree; and if the opening degree of the brake is between the first brake opening degree and the second brake opening degree, interpolating the third torque according to the torques corresponding to the first brake opening degree and the second brake opening degree.
In order to solve the above technical problems, the second technical solution adopted by the present invention is: a motor vehicle is provided comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method of torque control of the motor vehicle when executing the program.
The invention has the beneficial effects that: different from the prior art, the method provided by the invention collects different working conditions of the motor vehicle in all different motion states, and designs corresponding torque output aiming at each different working condition, so that a comprehensive and effective corresponding mode is provided for the motor vehicle, and the user experience is further improved.
Drawings
FIG. 1 is a schematic flow chart diagram of one embodiment of a method of torque control for a motor vehicle according to the present invention;
FIG. 2 is a table of classification of operating condition information for an embodiment of a method of controlling torque of a motor vehicle according to the present invention;
FIG. 3 is a first torque graph of an embodiment of a method of torque control for a motor vehicle according to the present invention;
FIG. 4 is a third torque graph of an embodiment of the torque control method of the motor vehicle of the present invention;
FIG. 5 is a sixth torque graph of an embodiment of the torque control method of the motor vehicle of the present invention;
FIG. 6 is a schematic structural view of an embodiment of the motor vehicle of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic flow chart of an embodiment of a torque control method for a motor vehicle according to the present invention. As shown in fig. 1, the torque control method of the motor vehicle of the present invention is as follows:
101: and acquiring the speed information, the accelerator state information and the brake state information of the motor vehicle.
In the present embodiment, the motor vehicle includes a pure electric vehicle and a hybrid electric vehicle.
Firstly, speed information, accelerator state information and brake state information of a motor vehicle are obtained, wherein the speed information, the accelerator opening and the brake opening are included, and when the accelerator opening and the brake opening are 0, the motor vehicle is regarded as not stepping on an accelerator and a brake.
102: and judging the working condition information corresponding to the motor vehicle according to the speed information, the accelerator state information and the brake state information.
Referring to fig. 2, fig. 2 is a table of operation condition information categories according to an embodiment of the torque control method of the motor vehicle of the present invention. And searching a working condition information classification table according to the acquired speed information, the accelerator state information and the brake state information, and judging the working condition information corresponding to the motor vehicle. The eight types of working condition information are as follows:
if the speed of the motor vehicle does not exceed a first preset speed and the accelerator and the brake are not stepped down, the corresponding working condition information is first working condition information;
if the speed of the motor vehicle exceeds a first preset speed and the accelerator and the brake are not stepped, the corresponding working condition information is second working condition information;
if the speed of the motor vehicle does not exceed the first preset speed, the brake is stepped on, and the accelerator is not stepped on, the corresponding working condition information is third working condition information;
if the speed of the motor vehicle exceeds a first preset speed, the brake is stepped on, and the accelerator is not stepped on, the corresponding working condition information is fourth working condition information;
if the speed of the motor vehicle does not exceed the first preset speed, the accelerator is stepped on, and the brake is not stepped on, the corresponding working condition information is fifth working condition information;
if the speed of the motor vehicle exceeds a first preset speed, the accelerator is stepped on, and the brake is not stepped on, the corresponding working condition information is sixth working condition information;
if the speed of the motor vehicle does not exceed the first preset speed and the accelerator and the brake are both stepped, the corresponding working condition information is seventh working condition information;
and if the speed of the motor vehicle does not exceed the first preset speed and the accelerator and the brake are both stepped, the corresponding working condition information is eighth working condition information.
In the present embodiment, the first predetermined speed is 6km/h, and in other embodiments, the first predetermined speed may be other values, which is not limited in the present invention.
103: and outputting corresponding torque according to the working condition information.
And if the corresponding working condition information is the first working condition information, outputting the first torque. Referring to fig. 3, fig. 3 is a first torque graph illustrating a torque control method for a motor vehicle according to an embodiment of the present invention.
The first torque satisfies the relationship shown in formula (1)
Wherein m is the mass of the motor vehicle, g is the gravitational acceleration, B is the road surface gradient, η is the transmission efficiency, i is the transmission ratio, f is the rolling resistance coefficient, C D Is the coefficient of air resistance, A is the frontal area, u a At a first predetermined speed, T min Is a first torque at a first predetermined speed, T max Is the first torque at speed 0, T 1 Is a first torque.
The normal road slope is less than 10%, and according to the maximum slope 15% of linear ramp of garage building design Specification, in order to ensure that the vehicle does not slide under the maximum slope, the starting motor torque T is considered max Calculated from the 15% slope starting resistance. In addition, to ensure stability under this condition, the motor torque T at which the first predetermined speed is reached is set min The resistance of the vehicle when moving at the first predetermined speed on a horizontal surface can be balanced. In this embodiment, the road surface gradient is 15%, in other embodiments, the road surface gradient may also be other values, and values may be taken according to actual conditions, and the calculation formula is modified accordingly, which is not limited in the present invention.
The first torque and the speed of the motor vehicle satisfy the relationship shown in the formula (2)
T 1 ＝f a (V) (2)
Wherein, T 1 For a first torque, V is the speed of the motor vehicle, f a Decreases with increasing V。
In this embodiment, f a Decreases with increasing V, i.e. f a The curve shape is designed as a derivative descending type. The design can lead the starting torque to be rapidly reduced when the forward speed can be generated, and in addition, if the speed on a straight road is close to a first preset speed, no further operation is adopted, and the vehicle can be stabilized on the current speed; when the road gradient is increased, the corresponding stable speed is reduced, but the driving smoothness can still be ensured. In other embodiments, f a The curve shape may also be designed as other function curves, which is not limited by the present invention.
And if the corresponding working condition information is second working condition information, outputting second torque. And determining whether the speed of the motor vehicle exceeds a second predetermined speed, wherein the second predetermined speed is higher than the first predetermined speed. And if the speed of the motor vehicle exceeds a second preset speed, starting a braking energy recovery function.
In this embodiment, the first predetermined speed is 6km/h, and the second predetermined speed is 20km/h, but in other embodiments, the first predetermined speed and the second predetermined speed may be other values, which is not limited in the present invention.
In another particular embodiment, the second torque is 0 if the speed of the motor vehicle is between 6km/h and 20 km/h; if the speed of the motor vehicle exceeds 20km/h, acquiring the residual electric quantity of a battery of the motor vehicle; and if the residual electric quantity of the battery of the motor vehicle does not exceed the preset electric quantity, starting a braking energy recovery function. In this embodiment, the predetermined electric quantity is 90% of the total electric quantity of the battery of the motor vehicle, and in other embodiments, the predetermined electric quantity may be other values, which are not limited in the present invention.
And if the corresponding working condition information is the third working condition information, outputting a third torque according to the opening information of the brake.
If the brake opening degree does not exceed the first brake opening degree, the output third torque is equal to the first torque value; if the opening degree of the brake exceeds a second brake opening degree, the third torque is zero, wherein the second brake opening degree is larger than the first brake opening degree; and if the opening degree of the brake is between the first brake opening degree and the second brake opening degree, interpolating the third torque according to the torques corresponding to the first brake opening degree and the second brake opening degree.
In a specific embodiment, referring to fig. 4, fig. 4 is a third torque graph of an embodiment of a method of torque control for a motor vehicle according to the present invention. The first brake opening degree is 10%, and the second brake opening degree is 20%. And if the corresponding working condition information is third working condition information, outputting a third torque according to the opening information of the brake. If the opening degree of the brake exceeds 20%, in order to save electric energy, the motor can not output torque any more, namely the third torque is 0; if the opening degree of the brake is not more than 10%, for the rapidity of starting of a driver, when the opening degree of the brake is close to 0 (namely the opening degree of the brake is 0-10%), the torque of the motor is increased to a function value in the corresponding first torque in advance, namely the third torque is calculated according to the current speed and a method for calculating the first torque; the third torque is linearly interpolated when the brake opening is between 20% and 10%. In other embodiments, the first brake opening and the second brake opening may be other values, and the third torque may be calculated by interpolation in other manners, which is not limited in the present invention.
If the corresponding working condition information is the fourth working condition information, judging whether the speed of the motor vehicle exceeds a second preset speed, wherein the second preset speed is higher than the first preset speed; if the speed of the motor vehicle does not exceed the second preset speed, outputting a fourth torque; and if the speed of the motor vehicle exceeds the second preset speed, outputting a fourth torque and recovering the braking energy.
In a particular embodiment, the fourth torque is 0 if the speed of the motor vehicle is between 6km/h and 20 km/h; if the speed of the motor vehicle exceeds 20km/h, acquiring the residual electric quantity of the battery of the motor vehicle; and if the residual electric quantity of the battery of the motor vehicle does not exceed the preset electric quantity, recovering the braking energy. When the speed exceeds 20km/h, only the brake is stepped on, and the braking energy recovery is carried out, so that the braking energy recovery can be realized, and the brake pad can be prevented from being damaged. In this embodiment, the predetermined electric quantity is 90% of the total electric quantity of the battery of the motor vehicle, and in other embodiments, the predetermined electric quantity may be other values, which are not limited in the present invention.
If the corresponding working condition information is sixth working condition information, acquiring a corresponding relation between sixth torque and the opening and speed of the accelerator; acquiring a sixth torque according to the current throttle opening and speed of the motor vehicle; and outputting the sixth torque.
Referring to fig. 5, fig. 5 is a sixth torque graph illustrating a torque control method for a motor vehicle according to an embodiment of the present invention. The abscissa is the vehicle speed in km/h, the ordinate is the moment in N m, and the curves corresponding to 100% and 90% … … 0% of the accelerator opening are from top to bottom, wherein the curve corresponding to 0% of the accelerator opening is the abscissa. If the vehicle speed is not changed, the sixth torque is increased along with the increase of the accelerator opening. If the accelerator opening is not changed, when the speed of the motor vehicle is lower than 40km/h, keeping an initial fixed value of the sixth torque unchanged, wherein the initial fixed value is set according to the accelerator opening; when the vehicle speed is higher than 40km/h, the sixth torque is gradually reduced with an increase in speed, and the magnitude of reduction of the sixth torque is gradually increased with an increase in speed. According to the curve, the vehicle outputs a larger torque when the speed is lower, so that the starting stability of the vehicle is ensured, and meanwhile, the output torque is gradually reduced when the speed is higher, so that the aim of saving fuel is fulfilled. In another embodiment, the correspondence relationship between the sixth torque and the accelerator opening and the speed may be another curve, and the present invention is not limited thereto.
And if the corresponding working condition information is fifth working condition information, acquiring a sixth torque and a first torque according to the current accelerator opening and speed, and outputting the fifth torque by taking the larger value of the sixth torque and the first torque as the fifth torque. The sixth torque is obtained according to the accelerator opening and the current vehicle speed, but considering that a larger first torque is output when the accelerator is not stepped on, the driver feel is affected if the moment becomes smaller when the driver steps on the accelerator, and therefore the larger value of the sixth torque and the first torque is output as the fifth torque at the moment.
And if the corresponding working condition information is the seventh working condition information, the motor vehicle simultaneously responds to the operation of the accelerator and the brake and outputs the seventh torque. The seventh torque is calculated from the third torque and the fifth torque, which is not limited in the present invention. When a driver starts on a steep slope, if the hand brake cannot ensure that the vehicle does not slide, the driver can only ensure that the vehicle does not slide by the mode that the left foot steps on the brake and the right foot steps on the accelerator, so that the driver can ensure that the brake and the accelerator respond simultaneously when driving at low speed. And if the corresponding working condition information is eighth working condition information, the motor vehicle only responds to the brake and outputs eighth torque. When the vehicle runs at a high speed, a brake priority strategy is ensured, so that the eighth torque is 0 and only the brake is responded. Meanwhile, the situation is considered to be possibly misoperation, so that the braking energy recovery is not started.
Different from the prior art, the method provided by the invention collects different working conditions of the motor vehicle in all different motion states, and designs corresponding torque output aiming at each different working condition, so that a comprehensive and effective corresponding mode is provided for the motor vehicle, and the user experience is further improved.
Referring to fig. 6, fig. 6 is a schematic structural view of an embodiment of the motor vehicle of the present invention. As shown in fig. 6, the motor vehicle 60 of the present embodiment includes a memory 61 and a processor 62 coupled to each other, the memory 61 is used for storing a computer program executed by the processor 62, intermediate data generated when the computer program is executed, and the like; the processor 62, when executing the computer program, implements any of the motor vehicle torque control methods of the present invention described above.
Different from the prior art, the motor vehicle collects different working conditions of the motor vehicle in different motion states, and designs corresponding torque output aiming at each different working condition, so that a comprehensive and effective corresponding mode is provided for the motor vehicle, and the user experience is improved.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (14)
1. A torque control method for a motor vehicle, comprising:
acquiring speed information, accelerator state information and brake state information of the motor vehicle;
judging working condition information corresponding to the motor vehicle according to the speed information, the accelerator state information and the brake state information;
outputting corresponding torque according to the working condition information;
if the speed of the motor vehicle does not exceed a first preset speed and neither an accelerator nor a brake is stepped, the corresponding working condition information is first working condition information, and a first torque is output according to the first working condition information, wherein the first torque meets a set function curve; if the speed of the motor vehicle does not exceed a first preset speed, the brake is stepped on, and the accelerator is not stepped on, the corresponding working condition information is third working condition information, and a third torque is output according to the third working condition information; the outputting a third torque according to the third operating condition information comprises: outputting a third torque according to the opening information of the brake; if the brake opening degree does not exceed a first brake opening degree, adopting a function value in the first torque for the third torque, and calculating the third torque according to a method for calculating the first torque; if the opening degree of the brake exceeds a second brake opening degree, the third torque is zero, wherein the second brake opening degree is larger than the first brake opening degree; if the opening degree of the brake is between the first brake opening degree and the second brake opening degree, the third torque performs linear interpolation according to the torques corresponding to the first brake opening degree and the second brake opening degree; if the speed of the motor vehicle exceeds a first preset speed, the accelerator is stepped on, and the brake is not stepped on, the corresponding working condition information is sixth working condition information, and a corresponding relation between sixth torque and the opening degree and the speed of the accelerator is obtained; acquiring the sixth torque according to the current throttle opening and speed of the motor vehicle; outputting the sixth torque, wherein the sixth torque is gradually reduced with the increase of the speed, and the magnitude of the reduction of the sixth torque is gradually increased with the increase of the speed; and if the speed of the motor vehicle does not exceed the first preset speed and the accelerator and the brake are both stepped, the corresponding working condition information is seventh working condition information, and the motor vehicle simultaneously responds to the operation of the accelerator and the brake and outputs seventh torque.
2. The torque control method of a motor vehicle according to claim 1, wherein the first torque satisfies a relationship shown in formula (1)
Wherein m is the mass of the motor vehicle, g is the gravitational acceleration, B is the road surface gradient, η is the transmission efficiency, i is the transmission ratio, f is the rolling resistance coefficient, C D Is the coefficient of air resistance, A is the frontal area, u a Is said first predetermined speed, T min Is a first torque at said first predetermined speed, T max Is the first torque at speed 0, T 1 Is the first torque.
3. The torque control method of a motor vehicle according to claim 2, wherein the first torque and the speed of the motor vehicle satisfy a relationship as shown in equation (2)
T 1 =f a (V) （2）
Wherein, T 1 For the first torque, V is the speed of the motor vehicle, f a The derivative of (c) decreases with increasing V.
4. The torque control method of a motor vehicle according to claim 2, wherein the road surface gradient B is 15%.
5. The method for controlling torque of a motor vehicle according to claim 1, wherein the step of determining the operating condition information corresponding to the motor vehicle according to the speed information, the accelerator state information, and the brake state information and the step of outputting the corresponding torque according to the operating condition information specifically include: and if the speed of the motor vehicle exceeds the first preset speed and the accelerator and the brake are not stepped, the corresponding working condition information is second working condition information, and a second torque is output according to the second working condition information.
6. The torque control method of a motor vehicle according to claim 5, characterized by comprising, after the step of outputting the second torque according to the second operating condition information:
judging whether the speed of the motor vehicle exceeds a second preset speed, wherein the second preset speed is higher than the first preset speed;
and if the speed of the motor vehicle exceeds the second preset speed, starting a braking energy recovery function.
7. The torque control method of a motor vehicle according to claim 6, wherein the first predetermined speed is 6km/h and the second predetermined speed is 20 km/h.
8. The method of claim 6, wherein the step of starting recovery of braking energy of the vehicle if the speed of the vehicle exceeds the second predetermined speed comprises:
if the speed of the motor vehicle exceeds the second preset speed, outputting a second torque and acquiring the residual battery capacity of the motor vehicle;
and if the residual electric quantity of the battery of the motor vehicle does not exceed the preset electric quantity, starting a braking energy recovery function.
9. The torque control method of a motor vehicle according to claim 1, wherein the first brake opening degree is 10% and the second brake opening degree is 20%.
10. The method for controlling torque of a motor vehicle according to claim 1, wherein the step of determining the operating condition information corresponding to the motor vehicle according to the speed information, the accelerator state information, and the brake state information and the step of outputting the corresponding torque according to the operating condition information specifically include: and if the speed of the motor vehicle exceeds a first preset speed, the brake is stepped on, and the accelerator is not stepped on, the corresponding working condition information is fourth working condition information, and a fourth torque is output according to the fourth working condition information.
11. The torque control method for a motor vehicle according to claim 10, wherein the step of outputting a fourth torque according to the fourth condition information specifically includes:
judging whether the speed of the motor vehicle exceeds a second preset speed, wherein the second preset speed is higher than the first preset speed;
outputting a fourth torque if the speed of the motor vehicle does not exceed the second predetermined speed;
and if the speed of the motor vehicle exceeds the second preset speed, outputting a fourth torque and recovering the braking energy.
12. The method for controlling torque of a motor vehicle according to claim 1, wherein the step of determining the operating condition information corresponding to the motor vehicle according to the speed information, the accelerator state information, and the brake state information and the step of outputting the corresponding torque according to the operating condition information specifically include: and if the speed of the motor vehicle does not exceed a first preset speed, the accelerator is stepped on, and the brake is not stepped on, the corresponding working condition information is fifth working condition information, and a fifth torque is output according to the fifth working condition information.
13. The method for controlling torque of a motor vehicle according to claim 1, wherein the step of determining the operating condition information corresponding to the motor vehicle according to the speed information, the accelerator state information, and the brake state information and the step of outputting the corresponding torque according to the operating condition information specifically include: and if the speed of the motor vehicle does not exceed the first preset speed and the accelerator and the brake are both pressed down, the motor vehicle only responds to the brake and outputs eighth torque.
14. A motor vehicle, characterized in that the motor vehicle comprises a memory and a processor coupled to each other, the memory having stored thereon a computer program operable on the processor, the processor implementing the method of torque control of the motor vehicle according to any one of claims 1-13 when executing the computer program.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2017/118412 WO2019126966A1 (en) | 2017-12-25 | 2017-12-25 | Motor vehicle and method for controlling torque thereof |
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| CN109414993A CN109414993A (en) | 2019-03-01 |
| CN109414993B true CN109414993B (en) | 2022-08-16 |
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| CN110877532A (en) * | 2019-11-28 | 2020-03-13 | 安徽中车瑞达电气有限公司 | Intelligent mining electric locomotive |
| CN113044032B (en) * | 2019-12-26 | 2021-11-05 | 北汽福田汽车股份有限公司 | Vehicle running power control method and device and vehicle |
| CN113715619B (en) * | 2021-10-09 | 2023-12-22 | 一汽解放汽车有限公司 | Vehicle control method and device based on zone speed regulation and computer equipment |
| CN114486245B (en) * | 2022-03-31 | 2024-04-23 | 东风汽车集团股份有限公司 | Test method, device, equipment and storage medium |
| CN114604105B (en) * | 2022-04-11 | 2023-12-15 | 潍柴动力股份有限公司 | Control method and related device for carrier frequency switching of motor |
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