CN102128258A - AT (Automatic Transmission) gear shift control method for emergency accelerator slacking - Google Patents
AT (Automatic Transmission) gear shift control method for emergency accelerator slacking Download PDFInfo
- Publication number
- CN102128258A CN102128258A CN2011100673525A CN201110067352A CN102128258A CN 102128258 A CN102128258 A CN 102128258A CN 2011100673525 A CN2011100673525 A CN 2011100673525A CN 201110067352 A CN201110067352 A CN 201110067352A CN 102128258 A CN102128258 A CN 102128258A
- Authority
- CN
- China
- Prior art keywords
- speed
- signal
- gear
- vehicle
- pine tar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Control Of Transmission Device (AREA)
Abstract
The invention discloses an AT (Automatic Transmission) gear shift control method for emergency accelerator slacking. The method comprises steps of: 1, a speed Th for slacking is detected when the speed Th for slacking is more than a set value Th0; and 2, when the vehicle speed V_speed is more than a set lower limit value V_speed_min and the rotation speed E_speed of an engine is smaller than a set upper limit value E_speed_max, the shift lever is positioned in a non neutral position and a reverse gear position and the transmission enters an emergency accelerator slacking control mode. As long as one of the four conditions is not satisfied, the transmission does not enter or quits the emergency accelerator slacking control mode. The method is used in a situation that an engine control system acquires a vehicle accelerator pedal slope signal, a vehicle speed signal, an engine rotation speed signal and a shift lever position signal under the condition that a driver slacks an accelerator pedal in an emergency way during high-speed running of a vehicle with the shift lever in a non neutral position and a reverse gear position, and then analysis is carried out according to the signals to limit the occurrence of an upshift action, so that a certain braking function is performed under the condition that the driver slacks the accelerator in an emergency way during high-speed running of the vehicle.
Description
Technical field
The invention belongs to automobile speed variator shift control system technical field, relate to a kind of AT(Automatic Transmission, automatic transmission) vehicle gear-shifting control method under anxious pine tar door situation.
Technical background
The AT speed changer has been born very early, belongs to very traditional driving mechanism.It is foundational development with the planetary gear set, realizes the change of velocity ratio by the switching between sun gear, outer tooth ring and the gear framework in the planetary gear set.The automatic transmission system carries out the posterior infromation that shift decision need be obtained vehicle running state parameter, driver intention, road environment information and veteran driver and relevant expert.Here being primarily aimed at the driver improves gear shift and controls the intention that satisfies the driver under anxious pine tar door situation.Under the situation of not taking this kind controlling method, according to the gear shift MAP collection of illustrative plates (as Fig. 1) of routine, the driver is anxious, and pine tar will produce shift-up action behind the door.We analyze the intention of the anxious pine tar door of driver in fact, are not difficult to find that the driver does not think that vehicle gives it the gun but wish that vehicle slows down to some extent.Attempt to step on brake petal behind the door and work as the anxious pine tar of driver, here coming loose throttle and step on and have certain delay between the brake petal unavoidably, engine speed can very fast decline, can not play certain braking action if produce the shift-up action rear engine, if during this period of time we have utilized the braking action meeting more or less of motor to reduce the negative effect that in emergency circumstances brings according to conventional gear shift.And this controlling method will be described is exactly to suppress this shift-up action as far as possible and keep current gear to utilize the braking action of motor to satisfy driving intention.
Summary of the invention
The objective of the invention is to overcome above many shortcomings, the anxious pine tar door of a kind of AT speed changer gear-shifting control method is proposed, make the driver can not produce shift-up action immediately behind the door and lose the chance of engine braking, but the maintenance that produces current gear utilizes the braking action of motor at anxious pine tar.
In order to achieve the above object, the present invention is by the following technical solutions:
This gear-shifting control method is for detecting the speed Th of pine tar door, when the speed of pine tar door during greater than setting value Th0; When vehicle velocity V _ speed greater than preset lower limit V_speed_min; When engine speed E_speed less than capping value E_speed_max; Gearshift position is non-neutral gear and reverse gear, and speed changer enters anxious pine tar gate control.Speed changer does not enter or withdraws from anxious pine tar gate control when above four conditions have one not satisfy.These controlled conditionss are all by speed changer TCU(speed changer control and management unit) calculate and control.Wherein input signal is gas pedal slope signal, vehicle speed signal, engine rotational speed signal, gearshift position signal, and output signal is for suppressing to upgrade signal.
Method specifically comprises following process:
By vehicle speed signal sensor acquisition vehicle speed signal, gearshift position sensor acquisition shift level signal, and this gas pedal variance ratio signal, vehicle speed signal, gearshift position signal and engine rotational speed signal passed to transmission control unit TCU.
Gather the gas pedal slope signal by the throttle velocity transducer, engine rotational speed signal sensor acquisition engine rotational speed signal, and this gas pedal slope signal and engine rotational speed signal passed to control unit of engine ECU, by control unit of engine ECU accelerator open degree signal and the brake signal gathered are passed to transmission control unit TCU by the CAN bus again.
Implemented the logic control of gear shift by transmission control unit TCU and actuator: transmission control unit TCU is with gas pedal slope signal, vehicle speed signal, engine rotational speed signal, the gearshift position signal analysis of gathering, when the speed of a motor vehicle greater than V_speed_min, the non-N shelves of gearshift position and R shelves, gas pedal slope greater than Th0, engine speed is during less than E_speed_max, output suppresses to upgrade signal to actuator, carry out and limit the function that upgrades, keep current gear; Do not limit the function that upgrades otherwise do not carry out, promptly the lifting shelves are according to MAP figure proper functioning.
This method is used for that engine control system obtains accelerator pedal of automobile slope signal, vehicle speed signal, engine rotational speed signal and gearshift position signal under the non-neutral gear of automobile and reverse gear are run at high speed the situation of the anxious pine tar door of driver pedal, then according to these signal analysis and limit the generation of shift-up action, to reach the effect of under the anxious pine tar door of automobile high-speed driver situation, vehicle being played certain braking.
After in AT speed changer car, passing through to implement gear shift control, when driver's scorch vehicle, run into urgency and anxious pine tar behind the door, engine speed descends rapidly, and vehicle continues to keep current gear, be equivalent to vehicle is played immediately the effect of braking, reduced or avoided unnecessary loss.Therefore no matter this function all is well-adapted considering still on the driving of reaction driver intention aspect from security standpoint, not only satisfy driver's intention, on safety, also played great role simultaneously.
Description of drawings
Fig. 1 is gear shift MAP figure;
Fig. 2 is the logic block-diagram of anxious pine tar door gear-shifting control method.
Embodiment
In order to understand the present invention better, below in conjunction with the accompanying drawings this programme is elaborated by embodiment,
The present invention takes logic control scheme as shown in Figure 2.As can be seen from Figure 2 the throttle velocity transducer is gathered the gas pedal slope signal and is passed to ECU, engine rotation speed sensor and gather engine rotational speed signal and pass to ECU, vehicle speed sensor and gather that vehicle speed signal is passed to TCU, gearshift position sensor acquisition gearshift position signal is passed to TCU; ECU passes to TCU with gas pedal slope signal and engine rotational speed signal by the CAN bus again; TCU is with the gas pedal slope signal of gathering, engine rotational speed signal, vehicle speed signal, the gearshift position signal is analyzed respectively, the speed of a motor vehicle and V_speed_min contrast (are designated as 1 greater than V_speed_min, be designated as 0 smaller or equal to V_speed_min), the gearshift position signal be N or R be designated as 0 all the other all be designated as 1, engine rotational speed signal and E_speed_max compared (be designated as 1 less than E_speed_max, be designated as 0 more than or equal to E_speed_max), gas pedal slope signal and Th0 compared (be designated as 1 less than Th0, be designated as 0 more than or equal to Th0, when wherein stepping on the throttle Th on the occasion of, Th is a negative value when unclamping, so Th0 is a negative value).And these results are carried out AND-operation obtain a result " 1 " or " 0 ", and the result is passed to actuator, and wherein anxious pine tar door gear shift control function is carried out in 1 expression, and this control function is not carried out in 0 expression, promptly normal gear shift.Wherein in TCU, need to provide V_speed_min, E_speed_max, Th0 parameter to carry out the demarcation of anxious pine tar door gear shift control functional conditions to the calibration engineer.Therefore the calibration engineer can decide the condition that enters anxious pine tar door gear shift control function by demarcating these parameters, and these conditions are consistent with the actual conditions of vehicle.
But, if we suppress to upgrade to bring following problem after considering this function activation always, operate anxious pine tar behind the door such as judge disconnected urgency by accident the driver, the situation that accelerator open degree accelerating vehicle before needing at once to recover will exist vehicle to upgrade when moving on, therefore we introduce this notion of stopping distance that the calibration engineer can demarcate and finish this function, avoid these negative influences.Following three-dimensional table (control table of table 1 stopping distance) has explained how to carry out the demarcation of stopping distance, wherein abscissa is represented driving model (economy, motion, load (as climb and fall, overload or leeward situation)), y coordinate is represented each gear, the value of form is just represented the stopping distance value of the braking action that each gear plays under various patterns so, and its unit is a rice.Compare distance and reach value on the form muting function that upgrades and to finish and to recover normal gear shift immediately if begin the data of the distance that moves forward by the vehicle that the speed of a motor vehicle and time calculate and following form from anxious this function activation of pine tar door, if distance works continuing less than the value inhibitory action on the form.Certainly the form below also needs TCU to provide out to allow the calibration engineer demarcate, these conditions and vehicle are met.Wherein, do not have the situation of braking under one grade of situation, the high more explanation speed of a motor vehicle of gear is high more, and the stopping distance that needs is long more; The big more vehicle inertia of load is big more, and the stopping distance that needs is also long more.
The control table of table 1 stopping distance
| Driving model/gear | ECO | SPORT | LOAD |
| One grade | 0 | 0 | 0 |
| Second gear | 50 | 60 | 70 |
| |
80 | 80 | 80 |
| |
100 | 100 | 100 |
| Five |
120 | 120 | 120 |
Actuator by above logic control scheme after, can arrive under the situation of the anxious pine tar door of driver pedal in the non-neutral gear of automobile and non-reverse gear are run at high speed vehicle is played certain braking action and can not have influence on other normal gear shift functions of vehicle.
Protection scope of the present invention is not limited to the above embodiments, and obviously, those skilled in the art can carry out various changes and distortion and do not depart from the scope of the present invention and spirit the present invention.If these changes and distortion belong in the scope of claim of the present invention and equivalent technologies thereof, then the intent of the present invention also comprises these changes and is out of shape interior.
Claims (4)
1. the anxious pine tar door of AT speed changer gear-shifting control method, it is characterized in that: described method comprises following process:
Gather gas pedal slope signal, engine rotation speed sensor collection engine rotational speed signal by the throttle velocity transducer, and signal passed to control unit of engine ECU, ECU passes to transmission control unit TCU with gas pedal slope signal and engine rotational speed signal by the CAN bus again;
Gather vehicle speed signal, gearshift position sensor acquisition gearshift position signal by vehicle speed sensor, and signal is passed to transmission control unit TCU;
Transmission control unit TCU carries out analytical calculation respectively with gas pedal slope signal, engine rotational speed signal, vehicle speed signal, the gearshift position signal of gathering, as the speed Th of pine tar door during greater than setting value Th0, when vehicle velocity V _ speed greater than preset lower limit V_speed_min, when engine speed E_speed less than capping value E_speed_max, when gearshift position was non-neutral gear and reverse gear, speed changer entered anxious pine tar gate control; When above four conditions had one not satisfy, speed changer did not enter or withdraws from anxious pine tar gate control.
2. the anxious pine tar door of AT speed changer according to claim 1 gear-shifting control method, it is characterized in that: described transmission control unit TCU is with the gas pedal slope signal of gathering, engine rotational speed signal, vehicle speed signal, the concrete mode that the gearshift position signal carries out analytical calculation respectively is as follows: with vehicle speed signal and V_speed_min contrast, when being designated as 1 greater than V_speed_min, be designated as 0 smaller or equal to V_speed_min, with the gearshift position signal is that N or R are designated as 0, all the other all are designated as 1, engine rotational speed signal and E_speed_max are compared, when being designated as 1 less than E_speed_max, be designated as 0 more than or equal to E_speed_max, gas pedal slope signal and Th0 are compared, when being designated as 1 less than Th0, be designated as 0 more than or equal to Th0, when wherein stepping on the throttle Th on the occasion of, be negative value when unclamping, so Th0 is a negative value; The above results is carried out AND-operation obtain a result " 1 " or " 0 ", and the result is passed to actuator, wherein anxious pine tar door gear shift control function is carried out in 1 expression, and this control function is not carried out in 0 expression, promptly normal gear shift.
3. the anxious pine tar door of AT speed changer according to claim 1 gear-shifting control method, it is characterized in that: from activating described anxious pine tar door gear shift control function, TCU calculates the distance that vehicle moves forward by the speed of a motor vehicle and time, the stopping distance data of distance information and demarcation are compared, when if distance reaches the stopping distance value of demarcation, the muting function that upgrades finishes immediately, and recovers normal gear shift; If distance is less than the stopping distance value of demarcating, then muting function continues to work.
4. the anxious pine tar door of AT speed changer according to claim 1 and 2 gear-shifting control method, it is characterized in that: the V_speed_min that the stopping distance of described demarcation provides according to TCU, E_speed_max, Th0 parameter are demarcated, and obtain the stopping distance control table of table 1
。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100673525A CN102128258A (en) | 2011-03-21 | 2011-03-21 | AT (Automatic Transmission) gear shift control method for emergency accelerator slacking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100673525A CN102128258A (en) | 2011-03-21 | 2011-03-21 | AT (Automatic Transmission) gear shift control method for emergency accelerator slacking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102128258A true CN102128258A (en) | 2011-07-20 |
Family
ID=44266467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100673525A Pending CN102128258A (en) | 2011-03-21 | 2011-03-21 | AT (Automatic Transmission) gear shift control method for emergency accelerator slacking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102128258A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102887142A (en) * | 2012-10-19 | 2013-01-23 | 同济大学 | Accidental shifting control method for automatic transmission automobile |
| CN107606133A (en) * | 2017-09-07 | 2018-01-19 | 重庆青山工业有限责任公司 | The anxious accelerator releasing upshift delay control method of vehicle with automatic transmission based on fuzzy control theory |
| CN107606132A (en) * | 2017-09-07 | 2018-01-19 | 重庆青山工业有限责任公司 | The anxious accelerator releasing upshift delay control function module frame and control system of speed variator of vehicle with automatic transmission based on fuzzy control |
| CN108216253A (en) * | 2018-01-05 | 2018-06-29 | 重庆青山工业有限责任公司 | The driver's type identification control function module frame and control system of vehicle |
| CN108240465A (en) * | 2018-01-05 | 2018-07-03 | 重庆青山工业有限责任公司 | Driver's kind identification method of vehicle |
| CN112413108A (en) * | 2020-10-19 | 2021-02-26 | 东风汽车集团有限公司 | Gear shifting control method, device and system based on automatic gearbox and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09144874A (en) * | 1995-11-20 | 1997-06-03 | Nissan Motor Co Ltd | Shift control device for automatic transmission |
| CN1936372A (en) * | 2005-09-22 | 2007-03-28 | 本田技研工业株式会社 | Automatic transmission control device |
| JP2008275046A (en) * | 2007-04-27 | 2008-11-13 | Iseki & Co Ltd | Shift control device of hydraulically driven work vehicle |
| CN101885332A (en) * | 2010-06-22 | 2010-11-17 | 重庆长安汽车股份有限公司 | Brake auxiliary control method of automobile AT transmission |
-
2011
- 2011-03-21 CN CN2011100673525A patent/CN102128258A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09144874A (en) * | 1995-11-20 | 1997-06-03 | Nissan Motor Co Ltd | Shift control device for automatic transmission |
| CN1936372A (en) * | 2005-09-22 | 2007-03-28 | 本田技研工业株式会社 | Automatic transmission control device |
| JP2008275046A (en) * | 2007-04-27 | 2008-11-13 | Iseki & Co Ltd | Shift control device of hydraulically driven work vehicle |
| CN101885332A (en) * | 2010-06-22 | 2010-11-17 | 重庆长安汽车股份有限公司 | Brake auxiliary control method of automobile AT transmission |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102887142A (en) * | 2012-10-19 | 2013-01-23 | 同济大学 | Accidental shifting control method for automatic transmission automobile |
| CN102887142B (en) * | 2012-10-19 | 2015-04-15 | 同济大学 | Accidental shifting control method for automatic transmission automobile |
| CN107606133A (en) * | 2017-09-07 | 2018-01-19 | 重庆青山工业有限责任公司 | The anxious accelerator releasing upshift delay control method of vehicle with automatic transmission based on fuzzy control theory |
| CN107606132A (en) * | 2017-09-07 | 2018-01-19 | 重庆青山工业有限责任公司 | The anxious accelerator releasing upshift delay control function module frame and control system of speed variator of vehicle with automatic transmission based on fuzzy control |
| CN107606133B (en) * | 2017-09-07 | 2019-02-26 | 重庆青山工业有限责任公司 | The anxious accelerator releasing upshift delay control method of vehicle with automatic transmission based on fuzzy control theory |
| CN107606132B (en) * | 2017-09-07 | 2019-02-26 | 重庆青山工业有限责任公司 | The anxious accelerator releasing upshift delay control function module frame and control system of speed variator of vehicle with automatic transmission based on fuzzy control |
| CN108216253A (en) * | 2018-01-05 | 2018-06-29 | 重庆青山工业有限责任公司 | The driver's type identification control function module frame and control system of vehicle |
| CN108240465A (en) * | 2018-01-05 | 2018-07-03 | 重庆青山工业有限责任公司 | Driver's kind identification method of vehicle |
| CN112413108A (en) * | 2020-10-19 | 2021-02-26 | 东风汽车集团有限公司 | Gear shifting control method, device and system based on automatic gearbox and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101943262B (en) | Sudden step-on-accelerator control method for automatic transmission | |
| CN101885332B (en) | Brake auxiliary control method of automobile AT transmission | |
| CN102128258A (en) | AT (Automatic Transmission) gear shift control method for emergency accelerator slacking | |
| CN100410568C (en) | Vehicle control apparatus | |
| CN102207193B (en) | Gear shift controlling method of DCT (double clutch transmission) automatic transmission in stepping an accelerator by urgency | |
| CN104742904A (en) | Cruise control method and system | |
| US20100145582A1 (en) | Transmission control unit for vehicles | |
| CN105292119A (en) | Gear-shifting correction system for automatic transmission and correction method for gear-shifting correction system | |
| CN105276156A (en) | Method and device for controlling automatic gear shifting of automobile | |
| CN108944933B (en) | Intelligent idling control system and method for engine | |
| CN105351512A (en) | Clutch control method used in downshifting process of transmission of automatic transmission system | |
| JP2011064330A (en) | Method for controlling automatic transmission of automobile in spontaneous fuel/pedal-off | |
| CN101903688A (en) | Automatic transmission control apparatus, controlling method, realize the program of this method and the recording medium that writes down this program | |
| CN102996784A (en) | Urgent speed reducing and gear shifting control method and system of automatic transmission | |
| CN108561546B (en) | Control system and method for improving impact caused by gear meshing direction change | |
| CN102537312A (en) | Method for controlling automatic transmission to downshift after braking | |
| CN102734455A (en) | Shifting control method for AMT (automated mechanical transmission) vehicle | |
| CN108443357B (en) | The control method of Retarder and engine exhaust Associated brake | |
| CN102654194A (en) | Road turn detection gear shift control method of double clutch transmission automobile | |
| CN102410366B (en) | Automobile automatic shifting control method | |
| CN101898554B (en) | Vehicle automatic transmission sports mode control method | |
| JP5729539B2 (en) | Auto cruise control device | |
| KR101714218B1 (en) | Method for stopping creep torque control of green vehicle | |
| CN104179962A (en) | Gear shifting control method of automatic transmission automobile | |
| CN106838290A (en) | Vehicle neutral gear accelerator control method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110720 |
|
| WD01 | Invention patent application deemed withdrawn after publication |