CN108869726B - Control method for high-gear starting and parking gear maintaining in manual mode - Google Patents
Control method for high-gear starting and parking gear maintaining in manual mode Download PDFInfo
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- CN108869726B CN108869726B CN201810928895.3A CN201810928895A CN108869726B CN 108869726 B CN108869726 B CN 108869726B CN 201810928895 A CN201810928895 A CN 201810928895A CN 108869726 B CN108869726 B CN 108869726B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
- F16H61/0204—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/36—Inputs being a function of speed
- F16H59/44—Inputs being a function of speed dependent on machine speed of the machine, e.g. the vehicle
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Abstract
The invention provides a control method for starting and keeping a parking gear in a manual mode at a high gear, which comprises the following steps: setting the vehicle speed values of the M2 gear upshift of the M1 gear and the M3 gear upshift of the M2 gear in the manual mode to be 0km/h so as to realize the original-place starting of the M2 gear and the M3 gear in the manual mode; when the vehicle speed is within the range smaller than the first vehicle speed threshold value, the vehicle is driven under any working condition after being started in the manual mode M1 gear, and is kept in the M1 gear when the vehicle is parked; when the vehicle speed is started in a manual mode M2 gear or M3 gear within a range smaller than a first vehicle speed threshold value, the vehicle speed is kept in a gear which is not higher than M2 gear or M3 gear when the vehicle is parked, and an appropriate parking gear is automatically judged according to the working condition. The invention can realize the function of high-gear in-situ starting in a manual mode, and improves the starting performance and the escaping capability of the road surface with low adhesion coefficient and the like. By automatically controlling the parking gear maintenance of the starting gears, the manual gear-shifting operation frequency of the driver is reduced when getting out of trouble.
Description
Technical Field
The invention relates to a control method for starting and maintaining a parking gear in a manual mode and particularly relates to a control method for starting and maintaining a parking gear in a manual mode of an automatic transmission.
Background
Necessity of manual mode high gear start: most vehicle models are started in a high gear mode in a manual mode at present, and particularly the 3-gear starting function is very rare. In order to improve the starting performance of the vehicle, especially for the vehicle model with the unbalanced off-road performance, the use conditions of various unpaved roads are considered, wherein the service conditions comprise low ice and snow-attached road surfaces, muddy tracks, sand silt, grasslands, rocks and the like. On the road surface with low adhesion coefficient and indeformable (such as compacted snow surface, ice surface and clay surface) and the road surface with low adhesion coefficient and larger rolling resistance (such as soft sand and accumulated snow surface), the wheel edge torque and the wheel speed are expected to be improved more moderately and more flexibly in the vehicle starting process, so that the stability and the smoothness of vehicle starting are improved. Even if a Traction Control System (TCS) is equipped, the intervention amount of the system can be effectively reduced by the manual mode high-gear starting, and good starting performance is guaranteed. When starting and driving downhill on a road surface with a low traction coefficient, an appropriate engine braking deceleration may be required. If the gear is too low, such as 1 or 2, instability of the vehicle may be caused due to too strong engine braking force, so that 3 or higher gears are required in some operating conditions to ensure stability of the vehicle. In addition, the non-manual mode often hardly gives consideration to all road condition driving requirements, the traditional manual mode has a plurality of vehicle speed limits and automatic gear shifting interventions on a driver, for example, each accelerator of each gear in the manual mode has a permitted gear-up vehicle speed limit, a permitted gear-down vehicle speed limit, an automatic gear-up intervention, an automatic gear-down intervention and the like, so that the driving intention of the driver can not be well realized under a plurality of working conditions, the manual mode high-gear starting function is added, a plurality of limits of the manual mode on the driver can be reduced, a controllable driving interval of the manual mode of the driver is expanded, and the driving pleasure is greatly improved.
The necessity of the parking gear keeping function after the manual mode high gear starting is as follows: when a vehicle is getting rid of the difficulty (such as sand and a vehicle stuck on a mud pothole road), even after starting at a high gear, the vehicle can not be successfully got rid of the difficulty at one time, and multiple times of continuous starting are needed for getting rid of the difficulty. For a vehicle without a high-starting gear keeping function, when the vehicle stops after the difficulty escaping process fails, the gear can be automatically shifted to the 1 st gear, the driver needs to frequently shift gears in the difficulty escaping process, and the difficulty escaping success rate is reduced. After the manual mode high-starting gear retaining function is added, the whole escaping process can be maintained at the high-starting gear, the manual gear shifting operation frequency of a driver is reduced, and the escaping success rate is improved.
Disclosure of Invention
In view of the above, embodiments of the present invention provide a control method for manually starting a high-gear and maintaining a parking gear, which can improve the off-road performance, starting performance and escaping capability of a vehicle on a non-paved road surface (especially a road surface with a low adhesion coefficient), and can correctly determine the intention of a driver, thereby expanding the controllable range of the driver and improving the driving pleasure.
The technical scheme adopted by the invention is as follows:
the embodiment of the invention provides a control method for manual mode high-gear starting and parking gear keeping, which is characterized by comprising a high-gear starting step and a parking gear keeping step, wherein the high-gear starting step comprises the following steps:
setting the vehicle speed value of the M2 gear which is allowed to be shifted up by the manual mode M1 to be 0km/h so as to realize the home gear starting of the manual mode M2;
setting the vehicle speed value of the M3 gear which is allowed to be shifted up by the manual mode M2 to be 0km/h so as to realize the home gear starting of the manual mode M3;
the parking gear maintaining step includes:
when the vehicle speed is within the range smaller than the first vehicle speed threshold value, the vehicle is driven under any working condition after being started in the manual mode M1 gear, and is kept in the M1 gear when the vehicle is parked;
when the vehicle speed is started in a manual mode M2 gear within a range smaller than a first vehicle speed threshold value, the vehicle speed is kept in a gear not higher than an M2 gear when the vehicle is parked, and a proper parking gear is automatically judged according to working conditions; and
when the vehicle speed is within the range smaller than the first vehicle speed threshold value, after the vehicle is started in the manual mode M3 gear, the vehicle is kept in the gear not higher than the M3 gear when the vehicle is parked, and the proper parking gear is automatically judged according to the working condition.
Optionally, after the vehicle starts in the manual mode M2 gear when the vehicle speed is less than the first vehicle speed threshold range, the vehicle speed is kept in a gear not higher than M2 gear when the vehicle stops, and an appropriate parking gear is automatically determined according to the working condition, specifically including:
when the vehicle speed is started in a manual mode M2 gear within a range smaller than a first vehicle speed threshold value, if the vehicle speed is smaller than or equal to a second vehicle speed threshold value and the vehicle is always driven in the manual mode, the vehicle is kept in the lowest gear position appearing in the current manual mode driving cycle when the vehicle is stopped;
when the vehicle speed is started in a manual mode M2 gear within a range smaller than a first vehicle speed threshold value, if the vehicle speed is larger than a second vehicle speed threshold value, or manual/automatic mode switching operation is performed, or the lowest gear which is the M1 gear appears, the vehicle is kept in an M1 gear during parking;
wherein the second vehicle speed threshold is greater than the first vehicle speed threshold.
Optionally, after the vehicle starts in the manual mode M3 gear within a range smaller than the first vehicle speed threshold, the vehicle is kept in a gear not higher than M3 gear during parking, and an appropriate parking gear is automatically determined according to the working conditions, which specifically includes:
when the vehicle speed is started in a manual mode M3 gear within a range smaller than a first vehicle speed threshold value, if the vehicle speed is smaller than or equal to a second vehicle speed threshold value and the vehicle is always driven in the manual mode, the vehicle is kept in the lowest gear position appearing in the current manual mode driving cycle when the vehicle is stopped;
when the vehicle speed is started in a manual mode M3 gear within a range smaller than a first vehicle speed threshold value, if the vehicle speed is larger than a second vehicle speed threshold value, or manual/automatic mode switching operation is performed, or the lowest gear which is the M1 gear appears, the vehicle is kept in an M1 gear during parking;
wherein the second vehicle speed threshold is greater than the first vehicle speed threshold.
Optionally, the first vehicle speed threshold is in a range of (0km/h, 5 km/h).
Optionally, the second vehicle speed threshold ranges from (30km/h, 60 km/h).
According to the control method for high-gear starting and parking gear keeping in the manual mode, disclosed by the embodiment of the invention, in a vehicle escaping test (such as vehicle escaping from a mud pothole road surface), the ground adhesion coefficient is lower, and through high-gear starting, the output torque of a wheel end can be reduced at a small accelerator opening degree, so that the output torque of the wheel end is smaller than the maximum ground adhesion, the slip probability is reduced, and the controllability of a driver on a vehicle is increased; through high gear position keeping function, can reduce driver's shift operation number of times at the in-process of getting rid of poverty, promoted the success rate of getting rid of poverty greatly.
Drawings
Fig. 1 is a schematic flow chart of a control method for manual high-gear start and parking gear hold according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating an M2 gear launch and stop operating in M2;
FIG. 3 is a schematic diagram showing M2 gear launch, and when the lowest gear is M1 gear, the parking is kept in M1 gear;
FIG. 4 is a schematic illustration of an M2 gear launch with the park remaining in the M1 gear condition upon a manual/automatic mode shift operation;
FIG. 5 is a schematic diagram of the M2 gear launch, when the vehicle speed is greater than V2, the parking is kept in the M1 gear condition;
FIG. 6 is a schematic illustration of an M3 gear launch and park maintaining an M3 gear condition;
FIG. 7 is a schematic diagram showing M3 gear launch, and when the lowest gear is M2 gear, the vehicle is stopped and kept in M2 gear;
FIG. 8 is a schematic diagram showing M3 gear launch, and when the lowest gear that has occurred is M1 gear, the vehicle is stopped and kept in M1 gear;
FIG. 9 is a schematic illustration of an M3 gear launch with the park maintained in the M1 gear condition upon a manual/automatic mode shift operation;
FIG. 10 is a schematic diagram of the M3 gear launch with the vehicle speed > V2 and the park maintained in the M1 gear condition.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic flow chart of a control method for manual high-gear start and parking gear hold according to an embodiment of the present invention; FIG. 2 is a schematic diagram illustrating an M2 gear launch and stop operating in M2; FIG. 3 is a schematic diagram showing M2 gear launch, and when the lowest gear is M1 gear, the parking is kept in M1 gear; FIG. 4 is a schematic illustration of an M2 gear launch with the park remaining in the M1 gear condition upon a manual/automatic mode shift operation; FIG. 5 is a schematic diagram of the M2 gear launch, when the vehicle speed is greater than V2, the parking is kept in the M1 gear condition; FIG. 6 is a schematic illustration of an M3 gear launch and park maintaining an M3 gear condition; FIG. 7 is a schematic diagram showing M3 gear launch, and when the lowest gear is M2 gear, the vehicle is stopped and kept in M2 gear; FIG. 8 is a schematic diagram showing M3 gear launch, and when the lowest gear that has occurred is M1 gear, the vehicle is stopped and kept in M1 gear; FIG. 9 is a schematic illustration of an M3 gear launch with the park maintained in the M1 gear condition upon a manual/automatic mode shift operation; FIG. 10 is a schematic diagram of the M3 gear launch with the vehicle speed > V2 and the park maintained in the M1 gear condition.
As shown in fig. 1, the control method for manual mode high-gear starting and parking gear holding provided by the embodiment of the present invention includes a high-gear starting step and a parking gear holding step, wherein the high-gear starting step includes:
s101, setting the vehicle speed value of the M2 gear which is allowed to be shifted up by the manual mode M1 to be 0km/h so as to realize the home gear starting of the manual mode M2 gear;
s102, setting the vehicle speed value of the M3 gear which is allowed to be shifted up by the manual mode M2 to be 0km/h so as to realize the home gear starting of the manual mode M3 gear;
the parking gear maintaining step includes:
s103, when the vehicle speed is within the range smaller than the first vehicle speed threshold value, the vehicle is driven in any working condition after being started in the manual mode M1 gear, and the vehicle is kept in the M1 gear when being stopped;
s104, when the vehicle speed is started in a manual mode M2 gear within a range smaller than a first vehicle speed threshold value, the vehicle speed is kept in a gear not higher than an M2 gear when the vehicle is parked, and a proper parking gear is automatically judged according to the working condition; and
and S105, when the vehicle speed is started in the manual mode M3 gear within the range smaller than the first vehicle speed threshold value, the vehicle speed is kept in the gear not higher than the M3 gear during parking, and the proper parking gear is automatically judged according to the working condition.
In the embodiment of the invention, the first vehicle speed threshold V1 is a vehicle speed threshold for determining that the vehicle is in a starting condition, and is generally a stable crawling vehicle speed, and in an example, the value range of V1 may be (0km/h, 5 km/h).
Further, step S104 may specifically include:
when the vehicle speed is started in a manual mode M2 gear within a range smaller than a first vehicle speed threshold value, if the vehicle speed is smaller than or equal to a second vehicle speed threshold value and the vehicle is always driven in the manual mode, the vehicle is kept in the lowest gear position appearing in the current manual mode driving cycle when the vehicle is stopped;
when the vehicle speed is started in a manual mode M2 gear within a range smaller than a first vehicle speed threshold value, if the vehicle speed is larger than a second vehicle speed threshold value, or manual/automatic mode switching operation is performed, or the lowest gear which is the M1 gear appears, the vehicle is kept in an M1 gear during parking;
wherein the second vehicle speed threshold is greater than the first vehicle speed threshold.
In the embodiment of the present invention, the second vehicle speed threshold V2 is the vehicle speed threshold for the vehicle high gear maintaining function to exit, and is generally the vehicle speed for getting out of the way, and in one example, the value of V2 may be (30km/h, 60 km/h).
Further, step S105 may specifically include:
when the vehicle speed is started in a manual mode M3 gear within a range smaller than a first vehicle speed threshold value, if the vehicle speed is smaller than or equal to a second vehicle speed threshold value and the vehicle is always driven in the manual mode, the vehicle is kept in the lowest gear position appearing in the current manual mode driving cycle when the vehicle is stopped;
and when the vehicle speed is started in the manual mode M3 gear within the range smaller than the first vehicle speed threshold value, if the vehicle speed is larger than the second vehicle speed threshold value, or manual/automatic mode switching operation is carried out, or the lowest gear which is the M1 gear occurs, the vehicle is kept in the M1 gear during parking.
The second vehicle speed threshold in step S105 is the same as the second vehicle speed threshold in step S104.
In the embodiment of the present invention, the vehicle speed after the vehicle is started in the manual mode M2 or M3 is equal to or less than the second vehicle speed threshold or greater than the second vehicle speed threshold, which means that the vehicle speed during the whole driving process after the vehicle is started is equal to or less than the second vehicle speed threshold or greater than the second vehicle speed threshold.
The invention is further described below with reference to specific examples.
[ examples ] A method for producing a compound
In this embodiment, the method for controlling the manual mode high-gear start and the parking gear hold provided by the invention may specifically include the following steps:
a. the vehicle speed value of the M2 gear is set to be 0km/h when the manual mode allows the M1 gear to be shifted up, and the manual mode M2 gear home starting can be achieved; the vehicle speed value of the M3 gear is set to 0km/h when the manual mode allows the M2 gear to be shifted up, and the manual mode M3 gear home starting can be realized.
b. After the vehicle is started in place in the manual mode M1, the vehicle is driven under any working condition and is kept in the M1 gear during parking; specifically, in the embodiment of the invention, after the vehicle is started in the manual mode M1 in situ, in the case of driving under any working condition, the parking process is shifted down according to the coasting shift-down M2-M1 corresponding to the vehicle speed, and when the vehicle speed is 0, the vehicle speed is shifted down to M1.
c. After the vehicle is started in place in the manual mode M2, the vehicle speed is less than or equal to V2, the vehicle is always kept in the manual mode, the vehicle is driven under any working condition of a gear (the gear is more than or equal to M2) which is not less than the starting gear, if the vehicle is manually switched to the M2-M3-M4 parking operation, the vehicle speed is sequentially reduced to the M2 gear according to the sliding downshift point during the parking process, and the vehicle is kept in the M2 gear during parking, as shown in figure 2.
d. After the manual mode M2 gear is started in place, the gear is always kept in the manual mode, the lowest gear is the working condition of the M1 gear, if M2-M1-M2-M3-M2-parking operation is switched manually, the parking process is sequentially reduced to the M1 gear according to the speed of a sliding downshift point, and the gear is kept in the M1 gear when the vehicle is parked, as shown in FIG. 3.
e. After the vehicle is started in the manual mode M2, if a manual/automatic mode switching operation is performed, such as manual mode-automatic mode-motion mode (M-D-M) or manual mode-motion mode-manual mode (M-S-M), the vehicle is stopped and is sequentially shifted down to the M1 gear according to the vehicle speed at the sliding downshift point, and the vehicle is kept at the M1 gear when the vehicle is stopped, as shown in FIG. 4.
f. After the vehicle is started in place in the manual mode M2, the vehicle is always kept to drive randomly in the manual mode, if the vehicle speed is larger than V2 during the whole process, the high gear position keeping function is released if the vehicle speed is manually switched to M2-M3-M4, the vehicle speed is sequentially reduced to the M1 gear according to the sliding downshift point during the parking process, and the vehicle is kept in the M1 gear during the parking process, as shown in FIG. 5.
g. After the vehicle starts in the manual mode M3, the vehicle speed is less than or equal to V2, the vehicle is always kept in the manual mode, and the vehicle is driven under any working condition in a gear (the gear is not less than M3) which is not lower than the starting gear. If the M3-M4-parking operation is manually switched, the parking process is sequentially reduced to the M3 gear according to the vehicle speed at the sliding downshift point, and the vehicle is kept at the M3 gear during parking, as shown in FIG. 6.
h. After the vehicle is started in place in the manual mode M3, the vehicle speed is less than or equal to V2, the vehicle is always kept in the manual mode, the lowest gear is the working condition of the M2 gear, if the vehicle is manually switched to the M3-M2-M3-M4-parking operation, the vehicle is sequentially reduced to the M2 gear according to the vehicle speed at the sliding downshift point in the parking process, and the vehicle is kept in the M2 gear during parking, as shown in FIG. 7.
i. After the vehicle is started in place in the manual mode M3, the vehicle speed is less than or equal to V2, the vehicle is always kept in the manual mode, the lowest gear is the working condition of the M1 gear, if the M3-M2-M1-M2-M3-M4 parking operation is switched manually, the vehicle is stopped and is sequentially reduced to the M1 gear according to the vehicle speed at the sliding downshift point, and the vehicle is kept in the M1 gear when the vehicle is stopped, as shown in FIG. 8.
j. After the manual mode M3 gear is started at the original position, the working condition of manual/automatic mode switching operation is available, for example, M-D-M or M-S-M operation is carried out, and the gear is kept at the M1 gear when the vehicle is parked, as shown in figure 9.
k. After the manual mode M3 gear is started at the original place, the manual mode is always kept for driving randomly, if the manual mode is used for switching M3-M4-parking operation, if the passing vehicle speed is larger than the working condition of V2 in the whole process, the high gear position keeping function is removed, the parking process is sequentially reduced to the M1 gear according to the vehicle speed of the sliding downshift point, namely the gear is kept at the M1 gear when the vehicle is parked, and the gear is shown in FIG. 10.
The above steps a to k can be represented by the following table 1:
table 1: control method overall control scheme for manual mode high-gear starting and gear maintaining
[]: calibrating variables
In the embodiment of the invention, the speed of the sliding downshift point refers to the speed corresponding to the automatic downshift of the vehicle from the high gear to the low gear in sequence according to a shift schedule fixed in the controller under the condition of no driver shift operation in the process of performing sliding deceleration with the accelerator opening of 0% in the manual mode. The gear shifting rule table is a two-dimensional table representing the relation between gears and corresponding downshift vehicle speeds, the abscissa is the gear, and the ordinate is the downshift vehicle speed of each gear, and the actual vehicle calibration is carried out.
The above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (3)
1. A control method for high-gear starting and parking gear maintaining in a manual mode is characterized by comprising a high-gear starting step and a parking gear maintaining step, wherein the high-gear starting step comprises the following steps:
setting the vehicle speed value of the M2 gear which is allowed to be shifted up by the manual mode M1 to be 0km/h so as to realize the home gear starting of the manual mode M2;
setting the vehicle speed value of the M3 gear which is allowed to be shifted up by the manual mode M2 to be 0km/h so as to realize the home gear starting of the manual mode M3;
the parking gear maintaining step includes:
when the vehicle speed is within the range smaller than the first vehicle speed threshold value, the vehicle is driven under any working condition after being started in the manual mode M1 gear, and is kept in the M1 gear when the vehicle is parked;
when the vehicle speed is started in a manual mode M2 gear within a range smaller than a first vehicle speed threshold value, the vehicle speed is kept in a gear not higher than M2 gear when the vehicle is parked, and an appropriate parking gear is automatically judged according to working conditions, and the method specifically comprises the following steps:
after starting in the manual mode M2 gear, if the vehicle speed is less than or equal to a second vehicle speed threshold value, the vehicle is always driven in the manual mode, and the vehicle is driven in any working condition of a gear not lower than a starting gear, the vehicle is kept in the M2 gear when the vehicle is stopped;
after the manual mode M2 gear is used for starting at the original place, if the manual mode is always kept, and the lowest gear is the working condition of M1 gear, the vehicle is kept in the M1 gear during parking;
after starting in the manual mode M2 gear, if a manual/automatic mode switching operation is performed, the vehicle is kept in the M1 gear during parking;
after starting in the manual mode M2 gear, if the vehicle is driven randomly in the manual mode all the time, and if the working condition that the vehicle passing speed is greater than a second vehicle speed threshold value occurs in the whole process, the vehicle is kept in the M1 gear during parking; when the vehicle speed is started in a manual mode M3 gear within a range smaller than a first vehicle speed threshold value, the vehicle speed is kept in a gear not higher than M3 gear when the vehicle is parked, and an appropriate parking gear is automatically judged according to working conditions, and the method specifically comprises the following steps:
after starting in the manual mode M3 gear, if the vehicle speed is less than or equal to a second vehicle speed threshold value, the vehicle is always driven in the manual mode, and the vehicle is driven in any working condition of a gear not lower than the starting gear, the vehicle is kept in the M3 gear when the vehicle is stopped;
after starting in the manual mode M3 gear, if the vehicle speed is less than or equal to the second vehicle speed threshold value, the vehicle is always kept in the manual mode, and the lowest gear is the working condition of M2 gear, and the vehicle is kept in the M2 gear when parking;
after starting in the manual mode M3 gear, if the vehicle speed is less than or equal to the second vehicle speed threshold value, the vehicle is always kept in the manual mode, and the lowest gear is the working condition of M1 gear, and the vehicle is kept in the M1 gear when parking;
after starting in the manual mode M3 gear, if a manual/automatic mode switching operation is performed, the vehicle is kept in the M1 gear during parking;
after starting in the manual mode M3 gear, if the vehicle is kept in the manual mode for driving at will all the time, and if the working condition that the vehicle passing speed is greater than a second vehicle speed threshold value occurs in the whole process, the vehicle is kept in the M1 gear during parking;
wherein the second vehicle speed threshold is greater than the first vehicle speed threshold.
2. The control method according to claim 1, wherein the first vehicle speed threshold value ranges from (0km/h, 5 km/h).
3. The control method according to claim 1, wherein the second vehicle speed threshold value ranges from (30km/h, 60 km/h).
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| JP2016199104A (en) * | 2015-04-08 | 2016-12-01 | トヨタ自動車株式会社 | Control device of vehicle |
| CN107614340A (en) * | 2015-06-01 | 2018-01-19 | 日产自动车株式会社 | The start control device of electric vehicle |
| CN107339417A (en) * | 2016-12-13 | 2017-11-10 | 安徽江淮汽车集团股份有限公司 | A kind of double-clutch speed changer method for controlling starting torque and system |
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| CN108869726A (en) | 2018-11-23 |
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