CN109291911B - Speed regulation control method and device for engine - Google Patents
Speed regulation control method and device for engine Download PDFInfo
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- CN109291911B CN109291911B CN201811155804.3A CN201811155804A CN109291911B CN 109291911 B CN109291911 B CN 109291911B CN 201811155804 A CN201811155804 A CN 201811155804A CN 109291911 B CN109291911 B CN 109291911B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
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Abstract
The application provides a speed regulation control method and a device of an engine, and the method comprises the following steps: judging whether the vehicle gear shifting is started or not; if so, acquiring the rotating speed of an output shaft of the vehicle gearbox and the target gear transmission ratio; calculating a target rotating speed of an engine according to the rotating speed of the output shaft and the target gear transmission ratio; acquiring an actual rotating speed of the engine; calculating the speed regulation torque of the engine according to the actual rotating speed and the target rotating speed; and carrying out auxiliary speed regulation on the engine according to the speed regulation torque. The speed regulation control method comprises the steps of calculating the target rotating speed of an engine according to the rotating speed of an output shaft and the target gear transmission ratio, calculating the speed regulation torque of the engine by combining the actual rotating speed of the engine, and then carrying out auxiliary speed regulation on the engine according to the speed regulation torque, so that the response speed of the engine in the gear shifting process is improved, and the problems of long power interruption time, clutch abrasion, vehicle rushing and the like caused by slow response speed of the engine are solved.
Description
Technical Field
The invention relates to the technical field of engine control, in particular to a speed regulation control method and device of an engine.
Background
In a whole vehicle system, because the inertia of an engine is generally large, the engine needs to be decelerated during the gear-up process, and the deceleration of the engine mainly depends on natural deceleration, namely depends on the mechanical resistance of the engine, and the response speed of the deceleration is slow. During a downshift, the engine needs to accelerate, and the response speed of the acceleration is also slow. The slow response speed of the engine causes problems of long power interruption time, clutch abrasion, vehicle crash and the like.
Then, how to improve the response speed of the engine during the gear shifting process is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, in order to solve the above problems, the present invention provides a speed regulation control method and device for an engine, and the technical scheme is as follows:
a speed regulation control method of an engine comprises the following steps:
judging whether the vehicle gear shifting is started or not;
if so, acquiring the rotating speed of an output shaft of the vehicle gearbox and the target gear transmission ratio;
calculating a target rotating speed of an engine according to the rotating speed of the output shaft and the target gear transmission ratio;
acquiring an actual rotating speed of the engine;
calculating the speed regulation torque of the engine according to the actual rotating speed and the target rotating speed;
and carrying out auxiliary speed regulation on the engine according to the speed regulation torque.
Preferably, before the obtaining of the output shaft rotation speed and the target gear transmission ratio of the vehicle gearbox, the governing control method further comprises the following steps:
reducing a torque of the engine;
judging whether the torque of the engine is smaller than a target torque value;
if yes, the step of obtaining the output shaft rotating speed and the target gear transmission ratio of the vehicle gearbox is executed.
Preferably, before the obtaining of the output shaft rotation speed and the target gear transmission ratio of the vehicle gearbox, the governing control method further comprises the following steps:
the clutch is separated;
judging whether the position of the clutch is larger than a target position or not;
if yes, the step of obtaining the output shaft rotating speed and the target gear transmission ratio of the vehicle gearbox is executed.
Preferably, after the engine is subjected to auxiliary speed regulation according to the speed regulation torque, the speed regulation control method further includes:
judging whether the absolute value of the difference value between the target rotating speed and the actual rotating speed is smaller than a preset calibration value or not;
if not, executing the step of acquiring the rotating speed of the output shaft of the vehicle gearbox and the target gear transmission ratio;
if yes, judging whether the gear shifting of the vehicle gearbox is finished or not;
and if the gear shifting of the vehicle gearbox is not finished, returning to the step of judging whether the absolute value of the difference value between the target rotating speed and the actual rotating speed is smaller than a preset calibration value or not.
The invention also provides a speed regulation control device of the engine, which comprises:
the first judgment module is used for judging whether the vehicle gear shifting is started or not; if yes, triggering a first acquisition module;
the first obtaining module is used for obtaining the rotating speed of an output shaft of a vehicle gearbox and the target gear transmission ratio;
the first calculation module is used for calculating the target rotating speed of the engine according to the rotating speed of the output shaft and the target gear transmission ratio;
the second acquisition module is used for acquiring the actual rotating speed of the engine;
the second calculation module is used for calculating the speed regulation torque of the engine according to the actual rotating speed and the target rotating speed;
and the auxiliary speed regulating module is used for carrying out auxiliary speed regulation on the engine according to the speed regulating torque.
Preferably, the speed regulation control device further includes: the device comprises a first control module and a second judgment module;
triggering the first control module when a vehicle shift is initiated, the first control module being configured to reduce torque of the engine;
the second judging module is used for judging whether the torque of the engine is smaller than a target torque value;
and if so, triggering the first acquisition module.
Preferably, the speed regulation control device further includes: the second control module and the third judgment module;
triggering the second control module when the torque of the engine is less than a target torque value, the second control module being configured to disengage a clutch;
the third judgment module is used for judging whether the position of the clutch is larger than a target position or not;
and if so, triggering the first acquisition module.
Preferably, the speed regulation control device further includes: a fourth judging module and a fifth judging module;
after the engine is subjected to auxiliary speed regulation according to the speed regulation torque, triggering a fourth judgment module, wherein the fourth judgment module is used for judging whether the absolute value of the difference value between the target rotating speed and the actual rotating speed is smaller than a preset calibration value or not;
if not, triggering the first acquisition module;
if yes, triggering a fifth judging module, wherein the fifth judging module is used for judging whether the gear shifting of the vehicle gearbox is finished or not;
and if the gear shifting of the vehicle gearbox is not finished, triggering the fourth judgment module.
Compared with the prior art, the invention has the following beneficial effects:
the speed regulation control method comprises the steps of calculating the target rotating speed of an engine according to the rotating speed of an output shaft and the target gear transmission ratio, calculating the speed regulation torque of the engine by combining the actual rotating speed of the engine, and then carrying out auxiliary speed regulation on the engine according to the speed regulation torque, so that the response speed of the engine in the gear shifting process is improved, and the problems of long power interruption time, clutch abrasion, vehicle rushing and the like caused by slow response speed of the engine are solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic flow chart of a method for controlling engine speed according to an embodiment of the present invention;
FIG. 2 is another schematic flow chart of a method for controlling engine speed according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart of a method for controlling engine speed according to an embodiment of the present invention;
FIG. 4 is a schematic flow chart of a method for controlling engine speed according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a speed control device of an engine according to an embodiment of the present invention;
FIG. 6 is another schematic structural diagram of a speed control device of an engine according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a speed control device of an engine according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a speed regulation control device of an engine according to an embodiment 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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1, fig. 1 is a schematic flow chart of a speed regulation control method for an engine according to an embodiment of the present invention, where the speed regulation control method includes:
s101: judging whether the vehicle gear shifting is started or not;
specifically, the vehicle gear shifting includes raising a vehicle gear and lowering the vehicle gear.
S102: if so, acquiring the rotating speed of an output shaft of the vehicle gearbox and the target gear transmission ratio;
specifically, if the vehicle starts to shift gears, the rotation speed of an output shaft is acquired through a sensor on an automatic gearbox of the vehicle, and a target gear transmission ratio, also called a target gear speed ratio, is acquired through a vehicle control system;
if the vehicle does not start shifting, the process returns to step S101 to continuously determine whether the vehicle shifting is started.
S103: calculating a target rotating speed of an engine according to the rotating speed of the output shaft and the target gear transmission ratio;
s104: acquiring an actual rotating speed of the engine;
specifically, the actual rotating speed of the engine at present is obtained through a whole vehicle control system.
S105: calculating the speed regulation torque of the engine according to the actual rotating speed and the target rotating speed;
specifically, the speed regulation torque for the auxiliary driving of the engine in the gear shifting process is calculated by PID (proportional-integral-derivative) regulation according to the actual rotating speed and the target rotating speed.
S106: and carrying out auxiliary speed regulation on the engine according to the speed regulation torque.
Specifically, in the embodiment of the invention, the motor including but not limited to 24V or 48V is used to perform auxiliary speed increasing or auxiliary speed decreasing on the engine according to the speed regulating torque, so as to increase the response speed of the engine during the gear shifting process.
The mode of adopting the motor has the following advantages:
the motor has the advantages of high torque response speed which can reach 1Nm/ms, large overload coefficient in a short time, high controllability, and easy realization of regulation of rotating speed and torque, namely regulation of electromotion (positive torque) and power generation (negative torque), so that the response speed of the engine in the gear shifting process is greatly improved based on a motor auxiliary speed regulation mode.
According to the speed regulation control method, the target rotating speed of the engine is calculated according to the rotating speed of the output shaft and the target gear transmission ratio, the speed regulation torque of the engine is calculated by combining the actual rotating speed of the engine, and then the engine is subjected to auxiliary speed regulation according to the speed regulation torque, so that the response speed of the engine in the gear shifting process is increased, and the problems of long power interruption time, clutch abrasion, vehicle rushing and the like caused by slow response speed of the engine are solved.
In another embodiment of the present invention, referring to fig. 2, in another embodiment of the present invention, fig. 2 is another schematic flow chart of a governing control method of an engine according to an embodiment of the present invention, before obtaining an output shaft rotation speed and a target gear transmission ratio of a transmission of a vehicle, the governing control method further includes:
s107: reducing a torque of the engine;
specifically, the torque of the engine is reduced to prepare for clutch separation in the vehicle gear shifting process, otherwise, sudden torque interruption of the vehicle drive train in driving can cause vehicle rushing, drive train shock vibration, abnormal sound and other problems.
S108: judging whether the torque of the engine is smaller than a target torque value;
specifically, it is desirable to zero the torque of the engine, but it is difficult to achieve this requirement during vehicle operation, and therefore a target torque value is set according to the specific situation, and a determination may be made based on the target torque value and the actual torque of the engine.
If the torque of the engine is smaller than the target torque value, step S102 is executed.
And if the torque of the engine is not less than the target torque value, returning to the step S107, and continuously reducing the torque of the engine until the requirement is met.
In another embodiment of the present invention, referring to fig. 3, in another embodiment of the present invention, fig. 3 is a schematic flow chart of an engine governing control method according to an embodiment of the present invention, before obtaining the output shaft rotation speed and the target gear transmission ratio of a vehicle transmission, the governing control method further includes:
s109: the clutch is separated;
specifically, during the vehicle gear shifting process, the clutch is disengaged as a necessary condition, so that the clutch is disengaged, otherwise the vehicle is flamed out and the like.
S110: judging whether the position of the clutch is larger than a target position or not;
specifically, when the clutch disengaged position satisfies the target position, it is the best time for shifting, and therefore the target position may be set according to specific situations, and is not limited in the embodiment of the present invention.
If the position of the clutch is greater than the target position, step S102 is executed.
If the position of the clutch is not larger than the target position, step S109 is executed to continuously disengage the clutch until the requirement is met.
Based on the above embodiment of the present invention, in another embodiment of the present invention, referring to fig. 4, fig. 4 is a schematic flow chart of a speed regulation control method of an engine according to an embodiment of the present invention, after performing auxiliary speed regulation on the engine according to the speed regulation torque, the speed regulation control method further includes:
s111: judging whether the absolute value of the difference value between the target rotating speed and the actual rotating speed is smaller than a preset calibration value or not;
specifically, during the shifting of the vehicle, it is desirable to make the actual rotational speed equal to the target rotational speed, but it is difficult to achieve the requirement due to the influence of various factors, and therefore, making the absolute value of the difference between the target rotational speed and the actual rotational speed smaller than a preset calibration value can be regarded as the engine rotational speed being adjusted to meet the target requirement.
It should be noted that the preset calibration value may be determined according to specific situations of the vehicle, and is not limited in the embodiment of the present invention.
If the absolute value of the difference value between the target rotating speed and the actual rotating speed is not less than a preset calibration value, executing a step S102;
if the absolute value of the difference value between the target rotating speed and the actual rotating speed is smaller than a preset calibration value, executing step S112;
step S112 is used for judging whether the gear shifting of the vehicle gearbox is finished;
if the vehicle gearbox does not complete the gear shifting, the process returns to the step S111.
If the vehicle gearbox completes the gear shifting, step S113 is executed, wherein step S113 is used for engaging the clutch, and the process is ended.
According to the speed regulation control method, the target rotating speed of the engine is calculated according to the rotating speed of the output shaft and the target gear transmission ratio, the speed regulation torque of the engine is calculated by combining the actual rotating speed of the engine, and then the engine is subjected to auxiliary speed regulation according to the speed regulation torque, so that the response speed of the engine in the gear shifting process is increased, and the problems of long power interruption time, clutch abrasion, vehicle rushing and the like caused by slow response speed of the engine are solved.
Based on all the above embodiments of the present invention, in another embodiment of the present invention, there is further provided a speed regulation control device for an engine, referring to fig. 5, fig. 5 is a schematic structural diagram of the speed regulation control device for an engine according to the embodiment of the present invention; the speed regulation control device comprises:
a first judgment module 51 for judging whether vehicle gear shifting is started; if yes, the first obtaining module 52 is triggered;
the first obtaining module 52 is used for obtaining the output shaft rotating speed and the target gear transmission ratio of the vehicle gearbox;
a first calculation module 53 for calculating a target rotational speed of the engine based on the rotational speed of the output shaft and the target gear transmission ratio;
a second obtaining module 54 for obtaining an actual speed of the engine;
a second calculating module 55, configured to calculate a speed regulation torque of the engine according to the actual rotation speed and the target rotation speed;
and the auxiliary speed regulating module 56 is used for carrying out auxiliary speed regulation on the engine according to the speed regulating torque.
Further, referring to fig. 6, fig. 6 is another schematic structural diagram of a speed regulation control device of an engine according to an embodiment of the present invention; the speed regulation control device further comprises: a first control module 61 and a second decision module 62;
triggering the first control module 61 when a vehicle shift is initiated, the first control module 61 being configured to reduce torque of the engine;
the second determination module 62 is used for determining whether the torque of the engine is smaller than a target torque value;
if yes, the first obtaining module 51 is triggered.
Further, referring to fig. 7, fig. 7 is a schematic structural diagram of a speed regulation control device of an engine according to an embodiment of the present invention; the speed regulation control device further comprises: a second control module 71 and a third judgment module 72;
triggering the second control module 71 when the torque of the engine is less than a target torque value, the second control module 71 being configured to disengage the clutch;
the third determination module 72 is configured to determine whether the position of the clutch is greater than a target position;
if yes, the first obtaining module 51 is triggered.
Further, referring to fig. 8, fig. 8 is a schematic structural diagram of a speed regulation control device of an engine according to an embodiment of the present invention; the speed regulation control device further comprises: a fourth judgment module 81 and a fifth judgment module 82;
after the engine is subjected to auxiliary speed regulation according to the speed regulation torque, triggering the fourth judging module 81, wherein the fourth judging module 81 is used for judging whether the absolute value of the difference value between the target rotating speed and the actual rotating speed is smaller than a preset calibration value or not;
if not, triggering the first obtaining module 51;
if yes, triggering a fifth judging module 82, wherein the fifth judging module 82 is used for judging whether the gear shifting of the vehicle gearbox is finished;
if the vehicle gearbox has not finished shifting gears, the fourth determination module 81 is triggered.
If the vehicle transmission completes shifting, the clutch is engaged and the process ends.
It should be noted that the principle of the speed regulation control device of the engine is the same as that of the speed regulation control method of the engine, and the description thereof is omitted.
The speed regulation control method and device of the engine provided by the invention are described in detail, and the principle and the implementation mode of the invention are explained by applying specific examples, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include or include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (4)
1. A speed regulation control method of an engine is characterized by comprising the following steps:
judging whether the vehicle gear shifting is started or not;
if so, reducing the torque of the engine;
judging whether the torque of the engine is smaller than a target torque value;
if so, acquiring the rotating speed of an output shaft of the vehicle gearbox and the target gear transmission ratio;
calculating a target rotating speed of an engine according to the rotating speed of the output shaft and the target gear transmission ratio;
acquiring an actual rotating speed of the engine;
calculating the speed regulation torque of the engine according to the actual rotating speed and the target rotating speed;
performing auxiliary speed regulation on the engine according to the speed regulation torque;
judging whether the absolute value of the difference value between the target rotating speed and the actual rotating speed is smaller than a preset calibration value or not;
if not, executing the step of acquiring the rotating speed of the output shaft of the vehicle gearbox and the target gear transmission ratio;
if yes, judging whether the gear shifting of the vehicle gearbox is finished or not;
and if the gear shifting of the vehicle gearbox is not finished, returning to the step of judging whether the absolute value of the difference value between the target rotating speed and the actual rotating speed is smaller than a preset calibration value or not.
2. The throttle control method according to claim 1, wherein before the obtaining of the output shaft rotation speed and the target gear transmission ratio of the vehicle transmission, the throttle control method further comprises:
the clutch is separated;
judging whether the position of the clutch is larger than a target position or not;
if yes, the step of obtaining the output shaft rotating speed and the target gear transmission ratio of the vehicle gearbox is executed.
3. A speed control device of an engine, characterized by comprising:
the first judgment module is used for judging whether the vehicle gear shifting is started or not;
the device comprises a first control module and a second judgment module;
triggering the first control module when a vehicle shift is initiated, the first control module being configured to reduce torque of the engine;
the second judging module is used for judging whether the torque of the engine is smaller than a target torque value;
if yes, triggering a first obtaining module, wherein the first obtaining module is used for obtaining the rotating speed of an output shaft of a vehicle gearbox and the target gear transmission ratio;
the first calculation module is used for calculating the target rotating speed of the engine according to the rotating speed of the output shaft and the target gear transmission ratio;
the second acquisition module is used for acquiring the actual rotating speed of the engine;
the second calculation module is used for calculating the speed regulation torque of the engine according to the actual rotating speed and the target rotating speed;
the auxiliary speed regulating module is used for carrying out auxiliary speed regulation on the engine according to the speed regulating torque;
a fourth judging module and a fifth judging module;
after the engine is subjected to auxiliary speed regulation according to the speed regulation torque, triggering a fourth judgment module, wherein the fourth judgment module is used for judging whether the absolute value of the difference value between the target rotating speed and the actual rotating speed is smaller than a preset calibration value or not;
if not, triggering the first acquisition module;
if yes, triggering a fifth judging module, wherein the fifth judging module is used for judging whether the gear shifting of the vehicle gearbox is finished or not;
and if the gear shifting of the vehicle gearbox is not finished, triggering the fourth judgment module.
4. The throttle control device of claim 3, further comprising: the second control module and the third judgment module;
triggering the second control module when the torque of the engine is less than a target torque value, the second control module being configured to disengage a clutch;
the third judgment module is used for judging whether the position of the clutch is larger than a target position or not;
and if so, triggering the first acquisition module.
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| CN201811155804.3A CN109291911B (en) | 2018-09-30 | 2018-09-30 | Speed regulation control method and device for engine |
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| CN201811155804.3A CN109291911B (en) | 2018-09-30 | 2018-09-30 | Speed regulation control method and device for engine |
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| CN112498331B (en) * | 2019-08-26 | 2022-02-25 | 上海汽车集团股份有限公司 | Control method and device for vehicle gear shifting and speed regulating |
| CN110588624B (en) * | 2019-09-25 | 2021-01-19 | 一汽解放青岛汽车有限公司 | Speed regulation method for hybrid electric vehicle engine |
| CN113124146B (en) * | 2021-03-22 | 2022-08-19 | 福建万润新能源科技有限公司 | Gear shifting control method based on DAT gearbox |
| CN114165584B (en) * | 2021-11-05 | 2023-07-18 | 潍柴动力股份有限公司 | AMT gearbox, gear shifting control method, gear shifting control device and gear shifting control medium for AMT gearbox |
| CN114001154B (en) * | 2021-11-09 | 2022-12-09 | 东风汽车集团股份有限公司 | Control method for gear shifting target rotating speed |
| CN115031018B (en) * | 2022-05-09 | 2023-11-17 | 潍柴动力股份有限公司 | Method, device, processor and tractor for adjusting transmission ratio of gearbox |
| CN114962493B (en) * | 2022-06-01 | 2024-03-19 | 潍柴动力股份有限公司 | PTO clutch control method and device, and computer program product |
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| CN104002814B (en) * | 2014-05-30 | 2016-08-24 | 武汉合康动力技术有限公司 | A kind of shifting method based on AMT parallel type hybrid vehicle system, device and vehicle |
| CN104859638B (en) * | 2014-12-19 | 2017-11-03 | 北汽福田汽车股份有限公司 | Hybrid electric vehicle paralleling model gear-shifting control method and system |
| CN105752076B (en) * | 2014-12-19 | 2018-08-24 | 北京宝沃汽车有限公司 | The dynamical system of the shift speed regulating method and hybrid vehicle of hybrid vehicle |
| CN106740826A (en) * | 2016-12-23 | 2017-05-31 | 潍柴动力股份有限公司 | A kind of engine starting method and device of single-axle parallel hybrid automobile |
| CN108146295B (en) * | 2018-01-16 | 2019-11-22 | 厦门金龙联合汽车工业有限公司 | A kind of clutch adaptive control algorithm improving AMT gear shifting quality |
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