CN104089003A - Limping-home control method for automatic double-clutch transmission - Google Patents
Limping-home control method for automatic double-clutch transmission Download PDFInfo
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- CN104089003A CN104089003A CN201410290664.6A CN201410290664A CN104089003A CN 104089003 A CN104089003 A CN 104089003A CN 201410290664 A CN201410290664 A CN 201410290664A CN 104089003 A CN104089003 A CN 104089003A
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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
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
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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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
- F16H63/42—Ratio indicator devices
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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
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
- F16H2061/1208—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures with diagnostic check cycles; Monitoring of failures
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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
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
- F16H2061/1224—Adapting to failures or work around with other constraints, e.g. circumvention by avoiding use of failed parts
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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
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
- F16H2061/1244—Keeping the current state
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
The invention provides a limping-home control method for an automatic double-clutch transmission. The limping-home control method includes acquiring car speed signals, input rotation speed signals of clutches, rotation speed signals of an inner input shaft, rotation speed signals of an outer input shaft, rotation speed signals of an output shaft and position signals of a gearshift lever; checking whether a current gear is matched or not according to speed ratio of the car speed signals, the input rotation speed signals of the clutches and the current gear are lost completely; if yes, keeping running of the current gear, and if not, switching in odd-even gears. A car can be kept normal running without pulling over under the condition of loss of the position signals of the lever, and running safety is improved.
Description
Technical field
The present invention relates to automotive transmission control field, be specifically related to the controlling method of double-clutch automatic gearbox limp-home.
Background technique
Double-clutch automatic gearbox comprises two coaxial nested or clutches of being arranged in parallel, coaxially, the interior input shaft of inside and outside nested arrangement and outer input shaft, output shaft, is arranged in the multiple synchromesh gears on output shaft, multiple selector fork and 1 differential mechanism composition.Speed changer is strange, even number gear driving gear is arranged on inside and outside input shaft, by switching and the action of different synchronizer of two clutches, realizes torque conversion and output.
Limp-home function refers at speed changer and occurs that damaging appears in some component, cannot complete normal use function, but can also realize within the specific limits the output of vehicle power, can utilize a part of component that current function is intact to complete the function of speed changer.
When driving, electronic control unit (ECU) thus the signal that need to obtain by various sensors the different groups such as engine rotational speed signal, engine torque signal, vehicle speed signal, shift signal, accelerator open degree signal double-clutch automatic gearbox is controlled and is realized self shifter.With reference to figure 1, taking wet-type double-clutch automatic speed-change device as example, realizing automatic gear change function needs automatic transmission case control unit (TCU) to gather different signals by the sensor of double-clutch automatic gearbox inside, wherein to gather clutch input speed signal (be clutch driving plate rotating speed to clutch rotational speed sensor 1, equal engine speed), OSS 2 gathers the tach signal of the first output shaft 13, the tach signal of input shaft 11 in interior input shaft rotating speed sensor 3 gathers, outer input shaft rotating speed sensor 4 gathers the tach signal of outer input shaft 12, 2/6 gear shift fork position transducer 5, 5/N gear shift fork position transducer 6, 3/1 gear shift fork position transducer 7, R/4 gear shift fork position transducer 8 gathers respectively four selector fork position signals, first clutch pressure transducer 9 gathers first clutch pressure signal, second clutch pressure transducer 10 gathers second clutch pressure signal, also there is the second output shaft 14 in the double clutch in Fig. 1, certainly also can speed probe be set for this output shaft 14.But at some in particular cases, for example in motion frequent start-stop or switch gear, can cause the overheated interior input shaft rotating speed sensor 3 that makes automatic transmission inside of signal emitter, outer input shaft rotating speed signal 4 even all speed probes 1 that simultaneously lost efficacy, 2, 3, 4 all lost efficacy, or because the reasons such as line fault cause all speed probes 1, 2, 3, 4 all lost efficacy, although it is still normal that the machinery of double-clutch automatic gearbox is carried out function, but now TCU is due in cannot judging, outer input shaft and output shaft rotating speed, cannot proceed the control of automatic transmission and make car load enter fault mode, throw-out-of clutch runs out of steam and stall or parking suddenly car load, and in the time that after a period of time, sensor temperature decline is worked again, after TCU picked up signal, controlling again automatic transmission resumes work, car load accelerates suddenly, and fall off when driving, it is very dangerous stopping or accelerating, especially in the time of running on expressway.
The control logic of existing double-clutch automatic transmission limp-home as shown in Figure 2, when interior input shaft or outside in input shaft rotating speed sensor one break down and another one when still normal, control vehicle stop, then controlling gearshift travels odd even gear simultaneously at gear, and detection based on normal sensor exports to calculate the corresponding input shaft rotating speed of abnormal sensor, thereby realize limp-home function.But first the prerequisite that realizes of the method is still to have one can normally work in two input shaft rotating speed sensors, in the time that the speed probe of speed changer inside is all abnormal, cannot realize limp-home function; Secondly, the method still needs to stop and carries out gear switching, and this remains very dangerous when driving; Again, the method can only be travelled with the gear of setting, and cannot carry out normal gear switching, but when road conditions complexity, or in the time of running on expressway, must carry out gear smoothly and switch guarantee safety.
Summary of the invention
When the speed probe that the object of the invention is to solve double-clutch automatic gearbox inside all loses efficacy, vehicle was fallen off, was stopped and threatened safe problem, ensure that vehicle still can limp-home under Parking condition not, embodiments of the invention provide following technological scheme for this reason:
A kind of double-clutch automatic gearbox limp-home controlling method, comprising: gather vehicle speed signal, clutch input speed signal, interior input shaft rotating speed signal, outer input shaft rotating speed signal, output shaft tach signal, selector fork position signal; In the time that described interior input shaft rotating speed signal, outer input shaft rotating speed signal are all lost, whether mate according to the speed ratio verification current shift of described vehicle speed signal, described clutch input speed signal and current shift; If current shift coupling, keeps current shift to travel, if current shift is not mated, carry out the switching of odd even gear.
Preferably, in the time that described clutch input speed signal, described output shaft tach signal are lost equally, read engine rotational speed signal from engine management system and substitute described clutch input speed signal, still can verification current shift whether mate.
Preferably, when described interior input shaft rotating speed signal, outer input shaft rotating speed signal all lose occur in that gear switches or clutch handoff procedure in time, first carry out gearshift according to default pressure and move and complete clutch and switch and move.
Preferably, described odd even gear switch step comprises: promote target gear selector fork; Judge according to selector fork position signal whether described selector fork is correctly hung into target gear; If selector fork is correctly hung into target gear, carry out clutch and switch action; Calculate target gear place input shaft rotating speed according to described vehicle speed signal, engine rotational speed signal and target gear speed ratio, judge whether correctly to complete gear and switch action, if correct, enter normally and travel.
Preferably, if selector fork is not correctly hung into target gear, carry out and move back gear action, then again promote selector fork, correctly do not hang yet into target gear, throw-out-of clutch when promotion selector fork number of times reaches predetermined value.
In the present invention, even if inside and outside input shaft rotating speed signal is all lost, but whether mate owing to can verification by vehicle speed signal, engine rotational speed signal and current shift speed ratio going out current shift, if gear coupling still keeps current shift to travel, without the gearshift of stopping.
Further, even if clutch input speed signal is also lost, now adopt engine rotational speed signal to substitute clutch input speed signal, although may there is less deviation, but still can carry out the matching verification of current shift, meet the verification requirement of limp-home.
Further, even if current shift is not mated, need to carry out gear switching, correctly be switched to after target gear and clutch switching at selector fork, according to vehicle speed signal, engine rotational speed signal and target gear speed ratio, can indirect calculation go out the input shaft rotating speed at target gear place, whether correctly complete gear switching action thereby judge, can the in the situation that of limp-home, realize normal gearshift function.
Further, when tach signal all lose occur in that gear switches or clutch handoff procedure in time, first carry out gearshift according to default pressure and move and complete clutch and switch and move, can ensure that follow-up current shift matching verification proceeds.
Further, if selector fork cannot correctly be switched to target gear, move back after gear and again attempt switching improving chance of success, and reach after pre-determined number still incorrect, the mechanical actuating mechanism that proves automatic transmission goes wrong, and now just holdback clutch is rational.
Brief description of the drawings
Next in connection with accompanying drawing, specific embodiments of the invention are described in further detail, wherein:
Fig. 1 is a kind of typical double-clutch automatic gearbox structural representation;
Fig. 2 is the double-clutch automatic gearbox limp-home controlling method logic diagram of prior art;
Fig. 3 is the double-clutch automatic gearbox limp-home controlling method logic diagram of embodiments of the invention.
Description of symbols in upper figure: 1 is clutch rotational speed sensor, 2 is OSS, 3 is interior input shaft rotating speed sensor, 4 is outer input shaft rotating speed sensor, 5 is 2/6 gear shift fork position transducer, 6 is 5/N gear shift fork position transducer, 7 is 3/1 gear shift fork position transducer, 8 is R/4 gear shift fork position transducer, 9 is first clutch pressure transducer, 10 is second clutch pressure transducer, 11 is interior input shaft, 12 is outer input shaft, 13 is output shaft 1, 14 is the second output shaft.
Embodiment
In described embodiment next, although be the wet-type double-clutch automatic speed-change device with two output shafts be that example describes, but controlling method of the present invention also can be applied to there is single output shaft or multi-output shaft, dry dual clutch automatic transmission, and the quantity of gear is also not limited to the present embodiment.
With reference to figure 1, in wet-type double-clutch automatic speed-change device, pressurize to realize clutch by oil pump (pump) to two clutches and switch.Clutch rotational speed sensor 1 gathers clutch input speed signal (being clutch driving plate rotating speed), first clutch pressure transducer 9 gathers first clutch pressure signal, second clutch pressure transducer 10 gathers second clutch pressure signal, interior input shaft 11 is connected with first clutch, and outer input shaft 12 is connected with second clutch.On input shaft 11, be furnished with outside 1 gear driving gear and 3 gear driving gears, on interior input shaft, be furnished with 2 gear driving gears and 4 gear driving gears, wherein 3 gear driving gears are simultaneously as 5 gear driving gears, 4 gear driving gears are simultaneously as 6 gear driving gears, 2 gear driving gears are simultaneously as reversing gear driving gear, like this, odd number gear driving gear is all arranged on interior input shaft 11, and even number gear driving gear is all arranged on outer input shaft 12.On the first output shaft 13, be furnished with parking ratchet wheel (park lock), 5 gear driven gears (5TH), 6 gear driven gears (6TH) and 2 gear driven gears (2ND), on the second output shaft 14, be furnished with 1 gear driven gear (1ST), 3 gear driven gears (3RD), 4 gear driven gear (4TH) and the driven gears that reverse gear (REV).The gear pair engagement of the switching by first clutch and second clutch and each driving gear, driven gear, realizes power output through differential mechanism (differential).OSS 2 gathers the tach signal of the first output shaft 13, the tach signal of input shaft 11 in interior input shaft rotating speed sensor 3 gathers, outer input shaft rotating speed sensor 4 gathers the tach signal of outer input shaft 12, and 2/6 gear shift fork position transducer 5,5/N gear shift fork position transducer 6,3/1 gear shift fork position transducer 7, R/4 gear shift fork position transducer 8 gather respectively four selector fork positions.
With reference to figure 3, when driving, ECU can constantly gather vehicle speed signal, accelerator open degree signal etc., and reads engine rotational speed signal from engine management system (EMS).The clutch input speed signal being gathered by TCU, interior input shaft rotating speed signal, outer input shaft rotating speed signal, output shaft tach signal, selector fork position signal also can pass to ECU, and ECU can send instruction to TCU according to collected signal, TCU controls the switching of each selector fork action, first clutch and second clutch.Under normal travel situations, engine speed equals clutch input speed, or only has less deviation.
In the time of no signal fault, vehicle can normally travel, once and occur signal fault, first judge whether because interior input shaft rotating speed sensor 3, outer input shaft rotating speed sensor 4 all lost efficacy and cause the tach signal in automatic transmission all to be lost, if otherwise taked other control measure described in background technique, if yes then enter subsequent step.
If inside and outside input shaft rotating speed signal is all lost, TCU cannot obtain clutch input speed, interior input shaft rotating speed, but TCU can record the data of current shift always, due under a certain gear, relation between the speed ratio (velocity ratio) of the speed of a motor vehicle, engine speed and this gear determines, the relation of each gear velocity ratio of the vehicle of for example certain double-clutch automatic gearbox and engine speed, the speed of a motor vehicle is as shown in table 1.
Table 1
| Gear | Velocity ratio | 1500rpm | 2000rpm | 2500rpm | 3000rpm | 3500rpm | 4000rpm | 4500rpm | 5000rpm | 5500rpm | 6000rpm |
| ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? |
| One grade | 3.545 | 12.761 | 17.016 | 21.268 | 25.522 | 29.775 | 34.029 | 38.283 | 42.536 | 46.79 | 51.044 |
| ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? |
| Second gear | 2.158 | 20.963 | 27.95 | 34.938 | 41.925 | 48.913 | 55.9 | 62.888 | 69.876 | 76.863 | 83.851 |
| ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? |
| Third gear | 1.478 | 30.607 | 40.81 | 51.012 | 61.214 | 71.417 | 81.619 | 91.823 | 102.024 | 112.226 | 122.429 |
| ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? |
| Fourth gear | 1.129 | 40.069 | 53.425 | 66.781 | 80.137 | 93.493 | 106.85 | 120.206 | 133.562 | 146.918 | 160.274 |
| ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? |
| Five grades | 0.886 | 51.058 | 68.077 | 85.097 | 102.116 | 119.135 | 136.155 | 153.174 | 170.193 | 187.213 | 204.232 |
| ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? |
| Reverse gear | 3.333 | 13.573 | 18.097 | 22.621 | 27.145 | 31.669 | 36.194 | 40.716 | 45.242 | 49.766 | 54.29 |
And in the ordinary course of things, in the time of stable travelling, whether clutch input speed and engine speed are basic identical, therefore, just can verification current shift mate according to the speed ratio at vehicle speed signal, clutch input speed signal and current shift place (being velocity ratio).And if tach signal in all speed changers including clutch rotational speed sensor 1, OSS 2 is while all losing, ECU reads engine rotational speed signal from engine management system (EMS) and substitutes clutch input speed signal, carries out verification.For example in 3 gear running process, TCU tach signal is all lost, now to be recorded to current shift be 3 gears to TCU, corresponding speed ratio is 1.478, the engine speed that ECU reads from EMS is 2500rpm, the vehicle speed signal that ECU obtains is 51 kilometers/hour, can prove 3 gear couplings, otherwise for not mating.
If current shift coupling, keeps current shift to travel, need not stop, ensure safety.
If current shift is not mated, for example accelerator open degree becomes large and engine speed improves, and causes 3 gears not mate, and need to carry out follow-up odd even gear and switch.
Certainly, because there is the process of putting into gear in advance with clutch switching in double-clutch automatic gearbox, if selector fork position signal is all lost while occurring in gear switching or clutch handoff procedure, first carry out gearshift according to default pressure and move and complete clutch switching action, thereby automatic transmission is reached at gear travelling state, and this is favourable to follow-up verification.Default pressure is the pressure of the factory-designed promotion selector fork action of automatic transmission or promotes the pressure that clutch switches.
As shown in the dotted line frame of Fig. 3, switch in order to carry out odd even gear, need to first promote target gear selector fork, if target gear selector fork correctly hang into, odd number gear and even number gear respectively have a gear at gear, then carry out clutch and switch action, and whether calculate target gear place input shaft rotating speed according to vehicle speed signal, engine rotational speed signal and target gear speed ratio correct, switch action thereby judge whether correctly to complete gear.Still taking current shift as 3 gears for example, because accelerator open degree becomes large, engine speed improves, and 3 gears need to switch to 4 gears, now promote 4 gear selector forks.If 4 gear selector forks are correctly hung into 4 gears, now on the second output shaft 14,3 gears, 4 gears, simultaneously at gear, are then carried out the switching of first clutch and second clutch, and engine power is switched to outer input shaft 12 by interior input shaft 11.But, now due to interior input shaft rotating speed sensor 3, outer input shaft rotating speed sensor 4, OSS 2, clutch input speed sensor 1 all lost efficacy, therefore TCU cannot directly be known each axle rotating speed, cannot directly judge that clutch driving plate synchronizes and whether complete with driven disc, but TCU by shift fork position transducer 8 know 4 gears correctly hung into, because each gear speed ratio is definite value, differential mechanism speed ratio is similarly definite value, therefore, according to vehicle speed signal, engine rotational speed signal and 4 gear speed ratios just can calculate the rotating speed of outer input shaft 12, in the time that the rotating speed of outer input shaft 12 reaches correct 4 gear tachometer value, the rotating speed that means outer input shaft 12 is correct, clutch driving plate has been synchronizeed with driven disc, the gear switching action that 3 gears change 4 gears correctly completes.After this vehicle can normally travel with 4 gears.
If promote in target gear selector fork process selector fork can not correctly hang into, now prove to have mechanical failure or other logic fault, carry out and move back gear action, then again promote selector fork and again shift gears, and TCU records once-through operation, still have the possibility of correct switching through attempting selector fork, now still needn't stop, only have when promotion selector fork number of times reaches predetermined value and correctly do not hang yet into target gear, throw-out-of clutch, car load runs out of steam.
Visible from the above description, in whole control procedure, although the tach signal in double-clutch automatic gearbox is all lost, but still can carry out safely self shifter action, in limp-home process, needn't stop or Reduced Speed Now.
Although the present invention is described in conjunction with above embodiment, but the present invention is not limited to above-described embodiment, and being only subject to the restriction of claim, those of ordinary skill in the art can easily modify to it and change, but do not leave essence design of the present invention and scope.
Claims (5)
1. a double-clutch automatic gearbox limp-home controlling method, comprising:
Gather vehicle speed signal, clutch input speed signal, interior input shaft rotating speed signal, outer input shaft rotating speed signal, output shaft tach signal, selector fork position signal;
It is characterized in that, in the time that described interior input shaft rotating speed signal, outer input shaft rotating speed signal are all lost, whether mating according to the speed ratio verification current shift of described vehicle speed signal, described clutch input speed signal and current shift;
If current shift coupling, keeps current shift to travel, if current shift is not mated, carry out the switching of odd even gear.
2. double-clutch automatic gearbox limp-home controlling method according to claim 1, it is characterized in that, in the time that described clutch input speed signal, described output shaft tach signal are lost equally, read engine rotational speed signal from engine management system and substitute described clutch input speed signal and carry out verification current shift and whether mate.
3. double-clutch automatic gearbox limp-home controlling method according to claim 1, it is characterized in that, when described interior input shaft rotating speed signal, outer input shaft rotating speed signal all lose occur in that gear switches or clutch handoff procedure in time, first carry out gearshift according to default pressure and move and complete clutch and switch and move.
4. according to the double-clutch automatic gearbox limp-home controlling method described in any one in claims 1 to 3, it is characterized in that, described odd even gear switch step comprises:
Promote target gear selector fork;
Judge according to selector fork position signal whether described selector fork is correctly hung into target gear;
If selector fork is correctly hung into target gear, carry out clutch and switch action;
Calculate target gear place input shaft rotating speed according to described vehicle speed signal, engine rotational speed signal and target gear speed ratio, judge whether correctly to complete gear and switch action, if correct, enter normally and travel.
5. double-clutch automatic gearbox limp-home controlling method according to claim 4, it is characterized in that, if selector fork is not correctly hung into target gear, carry out and move back gear action, then again promote selector fork, when reaching predetermined value, correctly do not hang yet into target gear, throw-out-of clutch promotion selector fork number of times.
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| CN201410290664.6A CN104089003B (en) | 2014-06-24 | 2014-06-24 | A kind of double-clutch automatic gearbox limp-home controlling method |
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| CN105465353A (en) * | 2015-12-16 | 2016-04-06 | 安徽江淮汽车股份有限公司 | Method for controlling wet type dual-clutch transmission to limp home |
| CN107466276A (en) * | 2015-04-13 | 2017-12-12 | 标致雪铁龙汽车股份有限公司 | Management method of the motor vehicle driven by mixed power with automatic gear-box in the gearbox jams |
| CN111006011A (en) * | 2018-10-08 | 2020-04-14 | 海马汽车有限公司 | Transmission correction method and device and motor vehicle |
| CN113738864A (en) * | 2021-09-29 | 2021-12-03 | 蜂巢传动科技河北有限公司 | AT transmission control method and system, AT transmission and vehicle |
| CN114542704A (en) * | 2022-01-12 | 2022-05-27 | 中国第一汽车股份有限公司 | Vehicle gear identification method and device, electronic equipment and storage medium |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107466276A (en) * | 2015-04-13 | 2017-12-12 | 标致雪铁龙汽车股份有限公司 | Management method of the motor vehicle driven by mixed power with automatic gear-box in the gearbox jams |
| CN107466276B (en) * | 2015-04-13 | 2020-07-07 | 标致雪铁龙汽车股份有限公司 | Method for managing a hybrid vehicle with an automatic gearbox in the event of a malfunction of said gearbox |
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| CN113738864A (en) * | 2021-09-29 | 2021-12-03 | 蜂巢传动科技河北有限公司 | AT transmission control method and system, AT transmission and vehicle |
| CN113738864B (en) * | 2021-09-29 | 2022-10-28 | 蜂巢传动科技河北有限公司 | AT transmission control method and system, AT transmission and vehicle |
| CN114542704A (en) * | 2022-01-12 | 2022-05-27 | 中国第一汽车股份有限公司 | Vehicle gear identification method and device, electronic equipment and storage medium |
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| CN104089003B (en) | 2016-03-16 |
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