CN103115144A - Control method for automobile gear choosing - Google Patents
Control method for automobile gear choosing Download PDFInfo
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- CN103115144A CN103115144A CN2013100438825A CN201310043882A CN103115144A CN 103115144 A CN103115144 A CN 103115144A CN 2013100438825 A CN2013100438825 A CN 2013100438825A CN 201310043882 A CN201310043882 A CN 201310043882A CN 103115144 A CN103115144 A CN 103115144A
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Abstract
The invention provides a control method for automobile gear choosing, belongs to the technical field of automobiles and solves the problem that the existing technology affects the start-up efficiency and the driving comfort. The control method for the automobile gear choosing comprises the following steps: Step one, vehicle start-up judging: a transmission control unit (TCU) receives a vehicle speed signal collected by a vehicle speed sensor and an engine rotation speed signal collected by an engine rotation speed sensor, respectively handles the vehicle speed signal and the engine rotation speed signal and judges whether a vehicle is in a start-up state when the vehicle speed is zero and the engine works; Step two, reading a shift lever position signal: the TCU receives a signal transmitted by a shift lever gear sensor and judges the current position of the shift lever; Step three, start-up gear choosing: the TCU controls the vehicle start-up gear choosing according to the dial-in gear of the shift lever and a position signal of a synchronizer collected by a fork position sensor. The control method for the automobile gear choosing is used for achieving fast vehicle start-up and improving the start-up safety.
Description
Technical field
The invention belongs to automobile technical field, relate to the controlling method that a kind of automobile shift is selected.
Background technique
Double-clutch type automatic gear shifting (DCT) is a kind of automatic mechanical transmission that occurs in recent years, the concentric input shaft transmission of two empty sets that its power connects respectively by two clutches, two clutch individual operations, a Clutch Control odd number gear (gear, three gears, five keep off and reverse gear), another Clutch Control even number gear (two gears, four gears and six gears); In double-clutch type automatic gear shifting, the driven gear of adjacent each gear staggered with two input shafts on the corresponding gear engagement, coordinate the control of two clutches, can realize greatly having shortened the gearshift time in the situation that do not cut off power and shift gears, effectively improve shift quality, it is high that double-clutch automatic transmission has been inherited the manual transmission transmission efficiency, installing space is compact, and is lightweight, many advantages such as low price.
It is that a forward gear participates in starting-up process that but the starting of vehicle is at present controlled, namely when gear level is dialled in D gear or R gear, TCU controls in conjunction with after corresponding clutch and break, just realize starting, but also inapplicable for double-clutch automatic gearbox, this starting strategy can cause two clutch abrasions of double-clutch automatic gearbox inhomogeneous, reduces the working life of clutch, and exist starting low-response, driving comfortability inadequate, the problem such as the starting Security is not high.
Automatic transmission case control unit (TCU) is comprised of 16 or 32 bit processors, signal processing circuit, power driver module etc., pass through strict emc testing; The automatic transmission case control unit, be usually used in the automatic transmission such as AMT, AT, DCT, CVT, adopt computer and power electronics actuation techniques to realize automobile automatic gear, can eliminate the shift gears difference of technology of driver, alleviate driver's labor intensity, improve travel safety, improve power character and the Economy of vehicle.
Problem for above-mentioned existence, existing Chinese patent literature discloses a kind of start control device [application number: CN200980109489.3] of Dual-clutch transmission for vehicle, when goods is used vehicle start, at first, two input shafts of dual clutch transmission are set as gearshift to the state of 1 speed gear and 2 speed gears, under this state, the amount of connection of the friction clutch that is connected with the train of gearings of 2 speed gears is increased, carry out 2 speed gear startings.After the process stipulated time, detection accelerator opening and the speed of a motor vehicle etc. are judged driving force too much or deficiency, when the driving force deficiency not occurring, continue to keep off by 2 speed and start to walk, and vehicle is accelerated rapidly; When the judgement driving force is not enough, connect immediately the friction clutch that is connected with the train of gearings of 1 speed gear.Owing to shifting gears in advance to the train of gearings of 1 speed gear, so speed changer becomes the state after downshift at short notice, even also can avoid the uncertain situation such as vehicle rollback at upward trend.But the main application area of this control gear still is the starting of uphill way, be in starting under other states for vehicle, parking environment as vehicle, may need first to move backward when starting and start to walk again, and the prior pre-hung gear of this control gear is gear and two gears, hang at needs and just need to first move back a gear when reversing gear, then extension reverses gear, impact starting efficient is to a certain degree affecting the travelling comfort of driving.
Summary of the invention
The objective of the invention is to have the problems referred to above for existing technology, proposed the controlling method that a kind of automobile shift be used to realizing the vehicle fast starting and starting to walk safe is selected.
Purpose of the present invention can realize by following technical proposal: the controlling method that a kind of automobile shift is selected, the control gear of realizing this controlling method comprises TCU, for detection of the gear level shift sensor of gear level present position with for detection of the shift fork position transducer of synchronizer present position, it is characterized in that, this controlling method comprises the steps:
The judgement of step 1, vehicle start: described TCU receives by the engine rotational speed signal of the vehicle speed signal of vehicle speed sensor collection and engine rotation speed sensor collection and respectively the signal of above-mentioned collection is processed, the speed of a motor vehicle be zero and motor judge that in the running vehicle is in the starting state;
Step 2, read in the gear level position signal: described TCU receives the signal of being carried by the gear level shift sensor and judges the residing current shift of gear level;
Step 3, starting gear are selected: the gear that described TCU dials according to gear level and the synchronizer position signal of shift fork position transducer collection are controlled the selection of vehicle start gear.
The controlling method that this automobile shift is selected, TCU first judges according to the engine rotational speed signal that vehicle speed signal and the engine rotation speed sensor of vehicle speed sensor conveying are carried whether vehicle is in the starting state, control again the selection of vehicle start gear according to the synchronizer position signal of the gear level position signal of gear level shift sensor collection and the collection of shift fork position transducer, control vehicle when dialling in D gear and synchronizer preliminary election two gears and R gear at gear level to start to walk with two gears; Control vehicle with the starting of R gear when gear level is dialled in R gear and synchronizer preliminary election two gears and R gear, control synchro is hung in advance into two gears or R gear before gear level changes to D gear or R gear, has improved the starting responsiveness of vehicle.
In the controlling method that above-mentioned automobile shift is selected, described step 3 comprises the steps:
When A, described TCU are in the P gear at gear level, the judgement vehicle is in normal block selecting state, starts to walk after control synchro is hung corresponding gear when gear level is dialled in R gear or N gear;
When B, described TCU were in R gear and synchronizer preliminary election two gear at gear level, control synchro was made correspondingly action when receiving gear level and dial in N gear, D gear or P gear;
C, described TCU are in N gear and clutch temp at gear level to be satisfied when pre-conditioned in TCU control synchro and hangs into two gears and R gear gear, and vehicle is with R gear or two gear startings when gear level is dialled in R gear or D gear;
D, described TCU receive the vehicle speed signal of being carried by throttle opening signal and the vehicle speed sensor of throttle sensor conveying and process when gear level is in the D gear, when throttle opening and the speed of a motor vehicle all are in R gear preselected area default in TCU, receiving the synchronizer preliminary election that still keeps two gears and R to keep off when gear level is dialled in N gear or R gear.
In the controlling method that above-mentioned automobile shift is selected, in the A of described step 3 step, described TCU control synchro after receiving gear level to dial in the R gear from the P gear is hung into R gear gear; Described TCU dials in N gear and clutch temp from P gear and satisfies when pre-conditioned in TCU control synchro and hang into two gears and R and keep off gear receiving gear level.The synchronizer gear is not carried out preliminary election when gear level is in the P gear, avoids vehicle when stopping, synchronizer to be carried out preliminary election, cause unnecessary trouble, affect the Vehicle Driving Cycle travelling comfort.
In the controlling method that above-mentioned automobile shift is selected, in the B of described step 3 step, described TCU is that gear level is when being in the R gear in judgement gear level residing current shift, the synchronizer of carrying according to the shift fork position transducer signal of putting into gear judge whether preliminary election two gears of synchronizer, at judgement synchronizer preliminary election two gears and receive gear level and keep two gears and R to keep off preliminary election when the R gear is dialled in the N gear; Do not detect synchronizer hang into two when gear the TCU control synchro withdraw from R gear gear, control synchro is hung into first gear with a gear starting when gear level is dialled in the D gear.
in the controlling method that above-mentioned automobile shift is selected, in the B of described step 3 step, described TCU in the situation that detect gear level rests on the N gear when R gear is changed to the D gear time value less than in TCU during the Preset Time value judgement vehicle be in the driver and stir fast gear level, synchronizer preliminary election two gears when described TCU is in the R gear at gear level, when vehicle is started to walk with two gears when gear level is dialled in the D gear, after the TCU control synchro withdraws from the R gear, control synchro is hung into first gear, after the shift fork position transducer detects a gear synchronizer hangs, control two gears fall to stop and begin with a gear starting.Can realize the vehicle fast starting, obtain to start to walk preferably responsiveness and power character by above-mentioned controlling method when the driver stirs gear level fast.
In the controlling method that above-mentioned automobile shift is selected, in the C of described step 3 step, described TCU is that gear level is in the N gear in the residing current shift of judgement gear level, control synchro is hung into two gears and R gear gear when clutch temp satisfies condition simultaneously, when changing to the D gear, gear level starts to walk with two gears, and the preliminary election of R gear; In higher than TCU during default condition, the TCU control synchro withdraws from R gear gear and hangs first gear at clutch temp, is synchronizer when hanging into a gear at the signal of shift fork position transducer collection, carries out two gears and falls to stop and begin with a gear starting.Pre-hung of synchronizer two gears when TCU is positioned at the N gear at gear level have guaranteed to start to walk with two gears immediately when gear level is dialled in the D gear, have improved the responsiveness of starting; Under the too high condition of clutch temp, control two gears and falls a gear, guarantee the Security of vehicle operating.
In the controlling method that above-mentioned automobile shift is selected, in the C of described step 3 step, described TCU start to walk with two gears when receiving gear level and dial in the D gear from N gear and receives driving wheel rotating speed and secondary speed by the wheel speed sensors detection, the difference of said two devices rotating speed in greater than TCU during default slip limiting value the judgement vehicle be in the wet-skid road surface operating mode, described TCU controls vehicle and start to walk with two gears and forbid that two gears fall a gear and operate.Under wet-skid road surface, the Security of starting has been guaranteed in the start to walk control of gear restriction of TCU.
In the controlling method that above-mentioned automobile shift is selected, in the D of described step 3 step, described TCU detects synchronizer and hangs into R gear and two gears when gear level is in the D gear, be in two gears default in TCU and R gear preselected area and hang when keep off into N at gear level in throttle opening and the speed of a motor vehicle, keeping two of synchronizer to keep off and R keeps off the gear preliminary election; Exceed two gears default in TCU and R gear preselected area at throttle opening and the speed of a motor vehicle, and control synchro withdraws from two gears and the preliminary election of R gear when gear level is dialled in the N gear.Still keep two gears and the preliminary election of R gear when gear level is dialled in the N gear, prepare for again entering the D gear or entering the R gear, improve the starting responsiveness.
Compared with prior art, the controlling method of this automobile shift selection has the following advantages:
1, the present invention's first control synchro preliminary election two gears and R gear before vehicle start namely can two gears or the starting of R gear after gear level is dialled in D gear or R gear, has improved the corresponding time of starting and has increased the starting Security.
2, the present invention under the too high condition of clutch temp, controls two gears and falls a gear; Controlling vehicle when vehicle is in the wet-skid road surface operating mode starts to walk with two gears and forbids that the operation of a gear falls in two gears, has guaranteed the Security of vehicle operating by this control procedure.
Description of drawings
Fig. 1 is that gear level of the present invention is in the P workflow diagram in when gear.
Fig. 2 is that gear level of the present invention is in the R workflow diagram in when gear.
Embodiment
Be below specific embodiments of the invention and by reference to the accompanying drawings, technological scheme of the present invention is further described, but the present invention be not limited to these embodiments.
as Fig. 1, shown in 2, the controlling method that this automobile shift is selected, the control gear of realizing this controlling method comprises TCU, gear level shift sensor for detection of the gear level present position, for detection of the shift fork position transducer of synchronizer present position be used for control synchro and hang into the synchronizer of the corresponding shift gear mechanism of putting into gear, this controlling method comprises the steps: step 1, the vehicle start judgement: described TCU receives by the engine rotational speed signal of the vehicle speed signal of vehicle speed sensor collection and engine rotation speed sensor collection and respectively the signal of above-mentioned collection is processed, the speed of a motor vehicle be zero and motor judge that in the running vehicle is in the starting state, step 2, read in the gear level position signal: described TCU receives the signal of being carried by the gear level shift sensor and judges the residing current shift of gear level, step 3, starting gear are selected: the gear that described TCU dials according to gear level and the synchronizer position signal of shift fork position transducer collection are controlled the selection of vehicle start gear.Pass through above-mentioned steps, TCU after definite preliminary election gear the pipage control signal to the synchronizer mechanism of putting into gear, the synchronizer mechanism of putting into gear controls selector fork synchronizer is pushed the preliminary election shift gear after receiving control command, can realize the vehicle fast starting after gear level is dialled in corresponding gear.
Specifically, the step 3 of the controlling method of automobile shift selection comprises the steps:
When A, TCU are in the P gear at gear level, the judgement vehicle is in normal block selecting state, and control synchro is hung into R gear gear after receiving gear level to dial in the R gear from the P gear; TCU dials in N gear and clutch temp from P gear and satisfies when pre-conditioned in TCU control synchro and hang into two gears and R and keep off gear receiving gear level.The synchronizer gear is not carried out preliminary election when gear level is in the P gear, avoids vehicle when stopping, synchronizer to be carried out preliminary election, cause unnecessary trouble, affect the Vehicle Driving Cycle travelling comfort.
B, TCU are that gear level is when being in the R gear in judgement gear level residing current shift, the synchronizer of carrying according to the shift fork position transducer signal of putting into gear judge whether preliminary election two gears of synchronizer, at judgement synchronizer preliminary election two gears and receive gear level and keep two gears and R to keep off preliminary election when the R gear is dialled in the N gear; Do not detect synchronizer hang into two when gear the TCU control synchro withdraw from R gear gear, control synchro is hung into first gear with a gear starting when gear level is dialled in the D gear; TCU in the situation that detect gear level rests on the N gear when R gear is changed to the D gear time value less than in TCU during the Preset Time value judgement vehicle be in the driver and stir fast gear level, synchronizer preliminary election two gears when TCU is in the R gear at gear level, when vehicle is started to walk with two gears when gear level is dialled in the D gear, after the TCU control synchro withdraws from the R gear, control synchro is hung into first gear, after the shift fork position transducer detects a gear synchronizer hangs, control two gears and fall to stop and begin with a gear starting.Can realize the vehicle fast starting, obtain to start to walk preferably responsiveness and power character by above-mentioned controlling method when the driver stirs gear level fast.
C, TCU are that gear level is in the N gear in the residing current shift of judgement gear level, and while control synchro when clutch temp satisfies condition is hung into two gears and R gear gear, when changing to the D gear, gear level starts to walk with two gears, and the preliminary election of R gear; In higher than TCU during default condition, the TCU control synchro withdraws from R gear gear and hangs first gear at clutch temp, is synchronizer when hanging into a gear at the signal of shift fork position transducer collection, carries out two gears and falls to stop and begin with a gear starting; TCU start to walk with two gears when receiving gear level and dial in the D gear from N gear and receives driving wheel rotating speed and secondary speed by the wheel speed sensors detection, the difference of said two devices rotating speed in greater than TCU during default slip limiting value the judgement vehicle be in the wet-skid road surface operating mode, TCU controls vehicle and start to walk with two gears and forbid that two gears fall a gear and operate.Pre-hung of synchronizer two gears when TCU is positioned at the N gear at gear level have guaranteed to start to walk with two gears immediately when gear level is dialled in the D gear, have improved the responsiveness of starting; Under the too high condition of clutch temp, control two gears and falls a gear, guarantee the Security of vehicle operating.Under wet-skid road surface, the Security of starting has been guaranteed in the start to walk control of gear restriction of TCU.
D, TCU receive the vehicle speed signal of being carried by throttle opening signal and the vehicle speed sensor of throttle sensor conveying and process when gear level is in the D gear, be in two gears default in TCU and R gear preselected area and hang when keep off into N at gear level in throttle opening and the speed of a motor vehicle, keeping two of synchronizer to keep off and R keeps off the gear preliminary election; Throttle opening and the speed of a motor vehicle exceed two gears default in TCU and R gear preselected area and when gear level is dialled in the N gear control synchro withdraw from two gears and R keeps off preliminary election.Still keep two gears and the preliminary election of R gear when gear level is dialled in the N gear, can be again to enter the D gear or enter the R gear and prepare, improve the starting responsiveness; The speed of a motor vehicle and throttle opening one or both all no longer during R gear preselected area, TCU shifts gears according to schedule, control synchro withdraws from gear when gear level is dialled in N gear and synchronizer preliminary election two gears and R gear, guarantee that all gear of synchronizers are in neutral, cause unnecessary trouble when avoiding vehicle to shift gears, thereby affect travelling comfort.
the concrete control procedure of the controlling method that this automobile shift is selected is: after ignition switch is opened, TCU must establish beginning work by cable and preliminary setting parameter value one and parameter value two in TCU, parameter value one is as the assessment of switching time between gear level bar position, be used for determining after the time of setting, gear level is determined to be positioned on this bar position, thereby carry out the operation of preliminary election gear, avoiding gear level is (as from P to N through middle apron, R is middle apron) time carry out the preliminary election gear, thereby make the mistake operation, parameter value two is as determining whether synchronizer has selected corresponding shift gear, guarantee the success of preliminary election gear action,
Detect vehicle speed signal by vehicle speed sensor, detect engine rotational speed signal by engine rotation speed sensor, TCU receives the signal of vehicle speed sensor and engine rotation speed sensor collection and processes in the judgement speed of a motor vehicle is that the zero-sum motor determines that in the running vehicle will be started to walk or vehicle stops;
Detect the residing current shift of gear level by the gear level shift sensor, TCU receives the signal of gear level shift sensor conveying and judges when gear level is in the P gear and confirms that vehicle is normal block selecting state, the TCU control synchro is hung into R and is kept off when gear level is dialled in R gear and time arrival parameter value one, control corresponding clutch and carry out combination when the time arrives parameter value two, vehicle is with the starting of R gear; Gear level dial in N gear and time arrive parameter value for the moment control synchro hang into two gears and R gear, clutch temp less than TCU in during preset temperature value when the time that synchronizer is hung two gears and R gear arrives parameter value two respectively confirmation synchronizer two keep off and R keeps off preliminary election; Clutch temp higher than TCU in during preset temperature value, the TCU control synchro withdraws from two gears and R gear, confirmation N gear deposits without the preliminary election of synchronizer gear when the time that two gear synchronizers and R gear synchronizer move back neutral arrives parameter value two;
TCU receives the signal of gear level shift sensor conveying and is judging that gear level detects synchronizer when being in the R gear and whether hung into second gear, when synchronizer has been hung into second gear, detect gear level and keep off from R the parameter value one whether time of dialling in the P gear arrives setting, arrive parameter value for the moment control synchro withdraw from two gears and R gear, and move back neutral and R at two gear synchronizers and keep off time that synchronizer moves back neutral and enter the Parking state when arriving parameter value two respectively, detect gear level and keep off from R the parameter value one whether time of dialling in the N gear arrives setting, keep for the moment two gears and the preliminary election of R gear of synchronizer at the arrival parameter value, when the time that gear level detected and dial in from R gear the D gear arrives the parameter value one of setting, the time and the TCU Preset Time value that the gear level that detects are positioned at the N gear compare, in the situation that the time that is positioned at N gear during less than TCU Preset Time value the judgement vehicle be in the driver and stir fast gear level, time value that gear level is dialled in D gear greater than parameter value for the moment vehicle with two gear startings in, control synchro withdraws from R gear and makes the return trip empty and control a gear synchronizer after gear and hang into a gear, TCU receives the synchronizer position signal to be detected and to be positioned at first gear and synchronizer at synchronizer by the shift fork position transducer and hangs the angle of incidence and arrive parameter value and confirm that for the moment synchronizer hung into a gear, TCU controls two gears and falls a gear, separate the clutch that connects two gears, in conjunction with the clutch that connects a gear, controlling vehicle travels with a gear, shift gears according to schedule subsequently, gear level is dialled in D when gear with two gear startings, returns neutral when the R gear gear that receives throttle opening and the speed of a motor vehicle and satisfy TCU control synchro when moving back R blend stop spare, still continues to travel with two gears, when throttle opening or speed of a motor vehicle one or all satisfy when withdrawing from preselected area, TCU according to schedule judgement carry out the lifting gear.
TCU receives the signal of gear level shift sensor conveying and is judging that gear level detects synchronizer when being in the R gear and whether hung into second gear, when synchronizer is not hung into second gear, detect gear level from the time that the R gear is dialled in the P gear arrive parameter value for the moment control synchro withdraw from the R gear, and enter the Parking state when the time that R gear synchronizer moves back neutral arrives parameter value two; Detect gear level from the time that R gear is dialled in the N gear arrive parameter value for the moment control synchro withdraw from the R gear so that one gear starting during the D gear; Arrive the parameter value set for the moment from the time that R gear is dialled in the D gear gear level being detected, the R gear gear of TCU control synchro is return neutral and is selected a gear, when the time that synchronizer moves back R gear and hangs a gear arrives the parameter value two of setting respectively,, shift gears according to schedule subsequently with a gear starting in conjunction with the clutch that connects a gear.
TCU receives signal that the gear level shift sensor carries and when the judgement gear level is in the N gear, the clutch temp that detects lower than TCU in during preset temperature value control synchro hang into two gears and R and keep off gear, TCU gear level from the time that N gear changes to the D gear arrive parameter value one and when synchronizer is hung two gears and is arrived parameter value two respectively with the time of being connected the R gear in conjunction with and the clutch that is connected of two gears keep off with two and starting to walk, and R keeps off preliminary election, driving wheel rotating speed and secondary speed that reception is detected by wheel speed sensors, the difference of said two devices rotating speed in greater than TCU during default slip limiting value the judgement vehicle be in the wet-skid road surface operating mode, TCU controls vehicle two gears and starts to walk and forbid that a gear operation falls in two gears, clutch temp higher than TCU in during preset temperature value, the TCU control synchro withdraws from R gear gear and hangs first gear, be that synchronizer is hung the time of hanging a gear into a gear and synchronizer when arriving parameter value two at the signal of shift fork position transducer collection, carry out two gears and fall to stop and begin with a gear starting, TCU arrives parameter value for the moment due to synchronizer preliminary election R gear and second gear from the time that N gear is dialled in the R gear receiving gear level, the corresponding clutch of combination after gear level changes to the R gear, vehicle can be started to walk immediately, if the clutch temp condition does not satisfy, two gears and R gear synchronizer be not by preliminary election, after gear level is dialled in the R gear, TCU control synchro engagement R gear gear, then starting, control synchro separation two gears and R gear gear when TCU will stop at the judgement vehicle, then hang the P gear, if preliminary election two does not keep off and the R gear, directly hang the P gear.
TCU receives signal that the gear level shift sensor carries and when the judgement gear level is in the D gear, when the throttle opening that judgement receives and the speed of a motor vehicle equal West Lake rain R gear preselected area, gear level still keeps two gears and the preliminary election of R gear synchronizer when dialling in the N gear, prepare for again entering D or entering the R gear, improve the starting response time; If all not when R gear preselected area, TCU shifts gears according to schedule for throttle opening and speed of a motor vehicle one or both, TCU guarantees that all gears are in neutral when gear level is dialled in N and kept off; Two gears and all not preliminary elections of R gear when if gear level is in the D gear, when gear level is dialled in the N gear from the D gear, TCU guarantees that all gears are in neutral, after gear level is dialled in the R gear from the D gear, and starting again after TCU control synchro engagement R gear gear.
This controlling method is mainly used in the vehicle of double-clutch automatic gearbox, for double-clutch automatic gearbox, due to double-clutch automatic gearbox and the similar shafting structure of manual transmission, have identical synchronizer and owing to having configured electrohydraulic control unit, thereby the preliminary election function of gear is achieved.Each synchronizer is controlled two gears, due to one the gear and the R gear in same output shaft, therefore preliminary election two gears and R keep off when N keeps off, thereby improve the response time of starting, and according to the variation of each sensor control synchro preliminary election gear that arranges on car, the Security that has effectively improved vehicle start.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or replenish or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (8)
1. the controlling method selected of an automobile shift, the control gear of realizing this controlling method comprises TCU, for detection of the gear level shift sensor of gear level present position with for detection of the shift fork position transducer of synchronizer present position, it is characterized in that, this controlling method comprises the steps:
The judgement of step 1, vehicle start: described TCU receives by the engine rotational speed signal of the vehicle speed signal of vehicle speed sensor collection and engine rotation speed sensor collection and respectively the signal of above-mentioned collection is processed, the speed of a motor vehicle be zero and motor judge that in the running vehicle is in the starting state;
Step 2, read in the gear level position signal: described TCU receives the signal of being carried by the gear level shift sensor and judges the residing current shift of gear level;
Step 3, starting gear are selected: the gear that described TCU dials according to gear level and the synchronizer position signal of shift fork position transducer collection are controlled the selection of vehicle start gear.
2. the controlling method of automobile shift selection according to claim 1, is characterized in that, described step 3 comprises the steps:
When A, described TCU are in the P gear at gear level, the judgement vehicle is in normal block selecting state, starts to walk after control synchro is hung corresponding gear when gear level is dialled in R gear or N gear;
When B, described TCU were in R gear and synchronizer preliminary election two gear at gear level, control synchro was made correspondingly action when receiving gear level and dial in N gear, D gear or P gear;
C, described TCU are in N gear and clutch temp at gear level to be satisfied when pre-conditioned in TCU control synchro and hangs into two gears and R gear gear, and vehicle is with R gear or two gear startings when gear level is dialled in R gear or D gear;
D, described TCU receive the vehicle speed signal of being carried by throttle opening signal and the vehicle speed sensor of throttle sensor conveying and process when gear level is in the D gear, when throttle opening and the speed of a motor vehicle all are in R gear preselected area default in TCU, receiving the synchronizer preliminary election that still keeps two gears and R to keep off when gear level is dialled in N gear or R gear.
3. the controlling method of automobile shift selection according to claim 2, is characterized in that, in the A of described step 3 step, described TCU control synchro after receiving gear level to dial in the R gear from the P gear is hung into R gear gear; Described TCU dials in N gear and clutch temp from P gear and satisfies when pre-conditioned in TCU control synchro and hang into two gears and R and keep off gear receiving gear level.
4. the controlling method selected of automobile shift according to claim 2, it is characterized in that, in the B of described step 3 step, described TCU is that gear level is when being in the R gear in judgement gear level residing current shift, the synchronizer of carrying according to the shift fork position transducer signal of putting into gear judge whether preliminary election two gears of synchronizer, at judgement synchronizer preliminary election two gears and receive gear level and keep two gears and R to keep off preliminary election when the R gear is dialled in the N gear; Do not detect synchronizer hang into two when gear the TCU control synchro withdraw from R gear gear, control synchro is hung into first gear with a gear starting when gear level is dialled in the D gear.
5. the controlling method selected of according to claim 2 or 4 described automobile shifts, it is characterized in that, in the B of described step 3 step, described TCU in the situation that detect gear level rests on the N gear when R gear is changed to the D gear time value less than in TCU during the Preset Time value judgement vehicle be in the driver and stir fast gear level, synchronizer preliminary election two gears when described TCU is in the R gear at gear level, when vehicle is started to walk with two gears when gear level is dialled in the D gear, after the TCU control synchro withdraws from the R gear, control synchro is hung into first gear, after the shift fork position transducer detects a gear synchronizer hangs, control two gears fall to stop and begin with a gear starting.
6. the controlling method selected of automobile shift according to claim 2, it is characterized in that, in the C of described step 3 step, described TCU is that gear level is in the N gear in the residing current shift of judgement gear level, control synchro is hung into two gears and R gear gear when clutch temp satisfies condition simultaneously, when changing to the D gear, gear level starts to walk with two gears, and the preliminary election of R gear; In higher than TCU during default condition, the TCU control synchro withdraws from R gear gear and hangs first gear at clutch temp, is synchronizer when hanging into a gear at the signal of shift fork position transducer collection, carries out two gears and falls to stop and begin with a gear starting.
7. the controlling method selected of according to claim 2 or 6 described automobile shifts, it is characterized in that, in the C of described step 3 step, described TCU start to walk with two gears when receiving gear level and dial in the D gear from N gear and receives driving wheel rotating speed and secondary speed by the wheel speed sensors detection, the difference of said two devices rotating speed in greater than TCU during default slip limiting value the judgement vehicle be in the wet-skid road surface operating mode, described TCU controls vehicle and start to walk with two gears and forbid that two gears fall a gear and operate.
8. the controlling method selected of automobile shift according to claim 2, it is characterized in that, in the D of described step 3 step, described TCU detects synchronizer and hangs into R gear and two gears when gear level is in the D gear, be in two gears default in TCU and R gear preselected area and hang when keep off into N at gear level in throttle opening and the speed of a motor vehicle, keeping two of synchronizer to keep off and R keeps off the gear preliminary election; Exceed two gears default in TCU and R gear preselected area at throttle opening and the speed of a motor vehicle, and control synchro withdraws from two gears and the preliminary election of R gear when gear level is dialled in the N gear.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310043882.5A CN103115144B (en) | 2013-01-31 | 2013-01-31 | Control method for automobile gear choosing |
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| CN201310043882.5A CN103115144B (en) | 2013-01-31 | 2013-01-31 | Control method for automobile gear choosing |
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| CN103711891A (en) * | 2013-12-30 | 2014-04-09 | 长城汽车股份有限公司 | Dual-clutch transmission starting control method |
| CN103807323A (en) * | 2014-02-18 | 2014-05-21 | 安徽江淮汽车股份有限公司 | Method for controlling normal starting of dual-clutch automatic transmission |
| CN104279309A (en) * | 2013-07-01 | 2015-01-14 | 上海汽车集团股份有限公司 | Method and device for controlling synchronizer in automatic mechanical gearbox |
| CN105987168A (en) * | 2015-02-03 | 2016-10-05 | 上海汽车集团股份有限公司 | Method and device for controlling shifting forks of double-clutch gear cases in neutral position modes |
| CN108501717A (en) * | 2018-03-29 | 2018-09-07 | 北京新能源汽车股份有限公司 | Automobile gear shifting control method and device |
| CN110001551A (en) * | 2018-01-05 | 2019-07-12 | 宝沃汽车（中国）有限公司 | Gear determines method, apparatus, vehicle and storage medium |
| CN111619368A (en) * | 2020-05-29 | 2020-09-04 | 三一专用汽车有限责任公司 | Vehicle starting control method and cargo vehicle |
| CN113124156A (en) * | 2021-05-12 | 2021-07-16 | 中国第一汽车股份有限公司 | Vehicle gear display control method, device, medium and electronic equipment |
| CN114148334A (en) * | 2021-12-13 | 2022-03-08 | 安徽江淮汽车集团股份有限公司 | Speed direction detection method for automatic transmission automobile |
| CN114607765A (en) * | 2022-03-11 | 2022-06-10 | 中国第一汽车股份有限公司 | Intelligent gear pre-engaging method for double-clutch transmission and vehicle |
| CN115264050A (en) * | 2022-08-08 | 2022-11-01 | 中国第一汽车股份有限公司 | Double-clutch transmission double-reverse gear starting control method and system and vehicle thereof |
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| CN104279309B (en) * | 2013-07-01 | 2017-04-26 | 上海汽车集团股份有限公司 | Method and device for controlling synchronizer in automatic mechanical gearbox |
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| CN103807323A (en) * | 2014-02-18 | 2014-05-21 | 安徽江淮汽车股份有限公司 | Method for controlling normal starting of dual-clutch automatic transmission |
| CN105987168B (en) * | 2015-02-03 | 2018-03-30 | 上海汽车集团股份有限公司 | The fork controls method and device of double-clutch type transmission neutral pattern |
| CN105987168A (en) * | 2015-02-03 | 2016-10-05 | 上海汽车集团股份有限公司 | Method and device for controlling shifting forks of double-clutch gear cases in neutral position modes |
| CN110001551A (en) * | 2018-01-05 | 2019-07-12 | 宝沃汽车（中国）有限公司 | Gear determines method, apparatus, vehicle and storage medium |
| CN108501717A (en) * | 2018-03-29 | 2018-09-07 | 北京新能源汽车股份有限公司 | Automobile gear shifting control method and device |
| CN111619368A (en) * | 2020-05-29 | 2020-09-04 | 三一专用汽车有限责任公司 | Vehicle starting control method and cargo vehicle |
| CN113124156A (en) * | 2021-05-12 | 2021-07-16 | 中国第一汽车股份有限公司 | Vehicle gear display control method, device, medium and electronic equipment |
| CN114148334A (en) * | 2021-12-13 | 2022-03-08 | 安徽江淮汽车集团股份有限公司 | Speed direction detection method for automatic transmission automobile |
| CN114148334B (en) * | 2021-12-13 | 2024-04-19 | 安徽江淮汽车集团股份有限公司 | Speed direction detection method for automatic transmission automobile |
| CN114607765A (en) * | 2022-03-11 | 2022-06-10 | 中国第一汽车股份有限公司 | Intelligent gear pre-engaging method for double-clutch transmission and vehicle |
| CN115264050A (en) * | 2022-08-08 | 2022-11-01 | 中国第一汽车股份有限公司 | Double-clutch transmission double-reverse gear starting control method and system and vehicle thereof |
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Effective date of registration: 20190315 Address after: 317000 east gate of Taizhou City, Zhejiang Province Co-patentee after: Zhejiang Geely Holding Group Co., Ltd. Patentee after: Zhejiang Geely Automobile Research Institute Co., Ltd. Address before: 311228 No. 206 Farmer's Second House in Linjiang Industrial Park, Xiaoshan District, Hangzhou City, Zhejiang Province Co-patentee before: Zhejiang Geely Automobile Research Institute Co., Ltd. Patentee before: Hangzhou Branch, Zhejiang Geely Automobile Research Institute Co., Ltd. Co-patentee before: Zhejiang Geely Holding Group Co., Ltd. |