CN1185119C - Automatic control system for step speed variator of motor-driven vehicle - Google Patents
Automatic control system for step speed variator of motor-driven vehicle Download PDFInfo
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- CN1185119C CN1185119C CNB021381410A CN02138141A CN1185119C CN 1185119 C CN1185119 C CN 1185119C CN B021381410 A CNB021381410 A CN B021381410A CN 02138141 A CN02138141 A CN 02138141A CN 1185119 C CN1185119 C CN 1185119C
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Abstract
The present invention relates to a control system for the gear change of a step speed variator of a motor-driven vehicle, particularly to the automatic control system for the gear change of the step variator of the motor-driven vehicle. The automatic control system for the gear change of the step variator of the motor-driven vehicle comprises the step variator, a sampler, a comparator, a memory, and executing pieces, wherein the sampler comprises a throttle pedal sensor, a rotating speed sensor of a motor, a vehicle speed sensor, and the output end of the sampler is connected with the comparator; the comparator and the memory are computers, and the other end of each of the computers is connected with the executing pieces; the executing pieces comprise the step motor, a plurality of control switches, each control switch is respectively connected with a gear disengaging device, a track selecting device, a gear poking device and a clutch device. The system has the advantages of strong reliability, high accurate rate, high sensitivity and strong combinatory flexibility, is suitable for various motor-driven vehicles and has the functions of theft protection and vehicle search.
Description
Technical field
The present invention relates to the control system of step speed variator of motor-driven vehicle, especially belong to the autonomous cruise speed system of step speed variator of motor-driven vehicle
Background technology
For example present many miniature cars, the gearshift of a large amount of trucies still relies on the technical ability of chaufeur to carry out manual operations, " dialling automatically " forward gear that uses on the existing car still has a plurality of hand push buttons to adjust, the structure of its special-purpose change-speed box and hydraulic pressure executive item is more complicated also, cost is also than higher, thereby the operation quality of chaufeur will directly influence the consumption of the smooth and easy and fuel of vehicle operating.
Summary of the invention
The purpose of this invention is to provide a kind of energy and substitute employed on the present car " dialling automatically " mechanism, be a kind of can be on self-propelled vehicle the automatic guidance step change transmission gearshift, and the speed of a motor vehicle that can the automatic guidance self-propelled vehicle make vehicle keep the autonomous cruise speed system of the step speed variator of motor-driven vehicle that weighing apparatus speed travels.
The technology used in the present invention principle is: [1] applies under the load unmodified prerequisite driving engine, engine speed is along with delivery quality what and speed, under the constant prerequisite of delivery quality, driving engine is applied load equally, rotating speed is along with minimizing or increase and the speed of load, a delivery quality can hold an engine speed section, and this is because due to air/fuel ratio adjusts naturally; [2] speed of a motor vehicle comes to produce to the converter speed ratio of engine speed by change-speed box; [3] each gear of vehicle in travelling all has the characteristics of the preferable speed of a motor vehicle section that adapts with it, the instruction point that also just becomes upshift, downshift up and down of this speed of a motor vehicle section.
By the design of above-mentioned thinking, both needed to use fully the dynamic trim ability (width of this decision speed of a motor vehicle section) of driving engine oneself, the variable block speed of a motor vehicle of each retaining the best also will be considered its economy, environmental protection, the factors such as smoothness of travelling.
The design is according to two limit characteristic of fuel delivery curves of driving engine, and one is driving engine open the throttle wide reposefully under the situation of no applied load, and the last extreme characteristic of fuel delivery curve that forms this driving engine is shown in [Fig. 5] curve M; Another makes its rotating speed drop to the limit under each throttle opening angle with peak load, forms a distinctive extreme characteristic of fuel delivery curve down of this driving engine shown in [Fig. 5] curve N.As mentioned above, as seen to the delivery quality of each throttle position, permissible load changes within the specific limits, and it causes the also corresponding variation within the specific limits of rotating speed of driving engine, and this string continually varying engine speed just forms the basic speed stage of this pairing driving engine in position, throttle angle.Be increased to the following extreme point that makes engine off if the last extreme point when removing the vertex of speed stage and be driving engine and not having applied load and the nadir of speed stage are loaded, so Yu Xia speed stage be exactly start the function normal operation can use speed stage.Consider the factors such as practicality, the stationarity when travelling, economy, environmental protection and the optimal speed of a motor vehicle of various gears of vehicle, must in the speed stage of energy usefulness, select the preferable engine speed section of using for each gear and change into speed of a motor vehicle section.Because the vehicle working condition that travels is complicated, the takeoff output of driving engine when middle low-speed running do not satisfy the needs of each operating mode such as vehicle acceleration, load variations, the torsion of driving engine output at this moment has only to change by change-speed box and just can be met, and speed of a motor vehicle section also just forms.At this moment change-speed box essence is the torsion that changes driving engine, be presented as a gear of change-speed box, a suitable speed of a motor vehicle section can only be provided, on the general car a plurality of gears are arranged all, the speed of a motor vehicle point that this speed of a motor vehicle section is the highest has just become the minimum speed of a motor vehicle point of instruction point, this speed of a motor vehicle section of upshift just to become the instruction point of downshift.Be that the pairing upshift line that respectively keeps off among Fig. 5 is: M
1, M
2, M
3... M
X-1, each keeps off pairing downshift line is N
2, N
3, N
4... N
xThe subscript of M or N is cooresponding to be gear in the change-speed box, on in a single day the speed of a motor vehicle runs into, give an order and a little just mean and to shift gears, in order to create condition more efficiently to gearshift, so the upshift programmed instruction that has been divided into change-speed box is (when change-speed box is in the highest forward gear, because there is not higher gear, so just do not need instruction, driving engine just from the maximum speed of revolution of rated load to the running of limit maximum speed of revolution) and the downshift programmed instruction of change-speed box (equally when change-speed box is in minimum forward gear, there is not next gear interchangeable yet, give an order a little only as the alarm point that may stop working for security consideration, remind chaufeur to carry out defence, this situation generally appears at anxious uphill way).Consider vehicle ' on the highway of Shang Changpo or lower long slope, its load is not only from road conditions and load-carrying, and the reverse component that also produces from vehicle gravity is considered from the smooth aspect of vehicle ' simultaneously, and the change-speed box variable block is made appropriate adjustment period.The A parameter be more suitable for based on long upward slope road conditions (the A parameter is the variable block instruction that the downshift instruction has been revised in advance) is set and based on the B parameter of long descending road conditions (the B parameter is the variable block instruction that the upshift instruction has been revised in advance) in computing machine, A, B two instruction corrected parameters are the stored programs that only access use for special road section, and this parameter also is fit to crowded, numerous and diverse urban district and uses.
No matter shift of transmission is that upshift or downshift are at first wanted off-gear, throttle (shrinkage amplitude is by computer controlled) is shunk in the stepping motor counter-rotating, make the contact surface of change-speed box inner pinion gear and driven gear not have pressure, off-gear electromagnetic valve work simultaneously, driving gear in the change-speed box separates with driven gear, and obtains the detection of computing machine.Determine the target gear according to the source and the speed of a motor vehicle of instruction again, instruction selects the rail electromagnetic valve to select rail, simultaneously according to target gear converter speed ratio instruction step electric machine control engine speed, upshift is to continue to receive throttle, downshift is the horse back open the throttle wide, the tooth of the target gear that makes idol fast synchronously after, just instruct the electric valve work of power-transfer clutch, disengage the clutch, instruct pulling out of this retaining to keep off electromagnetic valve work thereupon, pull out the retaining electromagnetic valve and dial in this retaining, and obtain COMPUTER DETECTION, and above-mentioned executive item electric current is closed, and gearshift work is once finished.
The technical solution adopted in the present invention: a kind of autonomous cruise speed system of step speed variator of motor-driven vehicle, comprise step change transmission, its structural feature is, it also comprises sample collector, comparator, memory device, executive item, sample collector also comprises accelerator pedal sensor, engine speed sensor, car speed sensor, its mouth links to each other with comparator, comparator, memory device is a computing machine, the other end of computing machine links to each other with executive item, executive item comprises stepping motor, a plurality of master cocies, the other end of stepping motor links to each other with throttle, each master cock respectively with the shift-disengaging device of change-speed box, rail-selecting device, shift-shifting device and clutch equipment link to each other.
Calculator memory has speed of a motor vehicle section, and the upper and lower speed of a motor vehicle point of this speed of a motor vehicle section has constituted comparison point, and a M that goes up most of speed of a motor vehicle section is a upshift instruction point, and the most following some N of speed of a motor vehicle section is downshift instruction point.Working as the speed of a motor vehicle like this is that M, N computer-chronograph are sent out shifting commands.
The vehicle speed signal of getting when car speed sensor enters computing machine and compares with the speed of a motor vehicle of calculator memory like this, and computing machine judges whether vehicle needs gearshift, needs gearshift computer-chronograph command execution part to work, and at first is the change-speed box off-gear.Determine the target gear according to the source and the speed of a motor vehicle of instruction again, instruction selects the rail electromagnetic valve to select rail, engine speed sensor is passed to computing machine with engine speed, whether reciprocity by the computer-made decision engine speed and the speed of a motor vehicle, according to target gear converter speed ratio instruction step electric machine control engine speed, upshift is to continue to receive throttle; Downshift is the horse back open the throttle wide, the tooth of the target gear that makes idol fast synchronously after, just instruct the electric valve work of power-transfer clutch, disengage the clutch, instruct pulling out of this retaining to keep off electromagnetic valve work thereupon, pull out the retaining electromagnetic valve and dial in this retaining, and obtain COMPUTER DETECTION, and above-mentioned executive item electric current is closed, and a self shifter job is finished.
Accelerator pedal sensor becomes the position of the action of Das Gaspedal, Das Gaspedal into signal and offers computing machine, by the turning to of computer-controlled stepper motor, rotating speed, stepping motor is to the control of position, throttle angle when avoiding original mechanical connection to disturb gearshift, can realize that like this computing machine controls the signal of the unconventional variation of Das Gaspedal.
Computing machine: mainly bury device by memory device and centre and form, its input end links to each other with sample collector, and its mouth and executive item join, and memory device has the pairing program of each function key; There is the program of just changeing, reversing rotating speed and qualification throttle maximum speed as the control step motor with the information of accelerator pedal sensor; Have change-speed box and respectively keep off pairing speed of a motor vehicle section, and by the two-end-point of speed of a motor vehicle section constituted upshift, downshift on give an order a little; There is the application program that change-speed box respectively keeps off converter speed ratio; The work matching program of each executive item when having change-speed box and respectively keeping off upshift, downshift; There is parking, reversing, starting, the auto acceleration control program that speed travels that travels, keeps weighing; There is the program that issued instruction maintenance is preferentially handled, guarantees continuity, the integraty of instruction, and detected once in per 0.1 second, after executive item is finished the work, stop powering to above-mentioned executive item.
Executive item: comprise (1) stepping motor and the throttle that it linked, also just controlled throttle by the turning to of computer-controlled stepper motor, rotating speed, cooperate and finish gearshift work, the auto acceleration of having realized vehicle travels and the speed that keeps weighing is travelled; (2) a plurality of master cocies (relay or silicon control), each master cock links to each other with shift-disengaging device, rail-selecting device, shift-shifting device and the clutch equipment of change-speed box respectively, and the at first former retaining of shifting gears must break away from; (3) be connected with rail-selecting device, the off-gear of change-speed box or group retaining are to rely on shift fork to finish, a shift fork is on a track, each fork can only preceding be dialled a retaining or another retaining is dialled in the back, the vehicle of five gears just needs three shift fork track, so computing machine just can be judged the track of wanting selected target tooth idol shift fork place; (4) be connected with clutch equipment, power-transfer clutch is the connection that disconnects driving engine and change-speed box, purpose is to overcome from instructing the error of sum of errors Computing in the tooth accidental resemblance step that implementation causes because of the time difference, giving to dial to keep off provides advantageous conditions, and another point is as long as throttle just separates the convenience of also hanging a retaining automatically, waiting being provided at the idle position power-transfer clutch; (5) be connected with shift-shifting device, carrying out target tooth coupling knot is the last action of finishing the once task of shifting gears.
Sample collector also comprises throttle angle level sensor, is placed on the throttle, and its mouth links to each other with comparator.Calculate function like this and control the throttle opening angle according to actual needs.The throttle angular-motion transducer has following effect: (a) position of throttle and the direction information of pace of change and variation are offered computing machine; (b) provide position, throttle at idle angle, the instruction of power-transfer clutch work during as parking; (c) variation of the per 0.1 second throttle position of speed of computing machine qualification position, throttle angle variation cooperates gearshift, environmental protection and requirements of saving energy less than 3 degree; (d) during full automatic control, computing machine limits automatic open the throttle wide speed, and the change in location of its per 0.1 second throttle is less than 3 degree.
General master cock or be relay perhaps is a silicon control.Realization of the present invention specifically can be passed through accelerator pedal sensor, the throttle angular-motion transducer, engine speed sensor, car speed sensor is with the signal input computing machine that obtains, by with computer-internal set on, following off-gear curve is compared, computing machine is made judgement and is maintained the original state, or send instruction and give: stepping motor shrinks throttle, relay A leads to the off-gear electromagnetic valve makes change-speed box become neutral, computing machine is again according to engine speed sensor this moment, the engine speed that car speed sensor is gathered and the speed of a motor vehicle are calculated converter speed ratio, compare with the parameter of the gear of calculator memory, and the instruction of correct gear passed to executive item, its repeat circuit B leads to the change-speed box first track electromagnetic valve, relay C leads to change-speed box the 3rd track electromagnetic valve, relay F leads to the electric valve of power-transfer clutch, relay D is that moving tooth overlaps electromagnetic valve before leading to change-speed box, and relay E pulls out tooth cover electromagnetic valve after leading to change-speed box.
Sample collector comprises function box, and its mouth links to each other with comparator, imports the command information that obtains into computing machine, accesses the computer-internal program, and vehicle is controlled.
The invention has the advantages that native system establishes under a kind of new approaches, utilize driving engine to determine and to be the basis for the zone of engine speed change at the intrinsic characteristic of fuel delivery of different load, utilize each gear of change-speed box all to have the speed of a motor vehicle section of the best of oneself to be foundation, set up new shifting commands, and designed the computer software that is complementary with it, hardware, and relevant actuating unit and the electronic circuit that is connected them, have general, simple in structure, stable performance, cheap characteristics, it is more convenient to reach use, it is safer to drive a vehicle, the purpose more favourable to environmental protection, and leave the space that continues expanded function.Native system good reliability, accuracy rate height, alerting ability highly sensitive, combination are strong, and various self-propelled vehiclees all are suitable for and have antitheft a, car-finding function.
Description of drawings
Fig. 1 is a principle of work scheme drawing of the present invention
Fig. 2 main plate line line structure scheme drawing
Fig. 3 is a mainboard control center circuit scheme drawing
Fig. 4 a engine speed sensor control path scheme drawing
Fig. 4 b car speed sensor control path scheme drawing
Fig. 4 c throttle angle level sensor control path scheme drawing
Fig. 5 is a shifting commands line scheme drawing
Fig. 6 a is a function key box panel scheme drawing
Fig. 6 b is a function key box panel button control path scheme drawing
Fig. 7 is a throttle automatic guidance principle of work scheme drawing
Fig. 8 is a change-speed box off-gear electromagnetic valve structure scheme drawing
Fig. 9 selects rail electromagnetic valve structure scheme drawing for change-speed box
Figure 10 dials retaining electromagnetic valve structure scheme drawing for change-speed box
Figure 11 is the automatic control device of clutch scheme drawing
：100. 101. 102. 103. 104. 105. 107. 108.A 109.B 110.C 111.D 112.E 113.F116. 117. 118. 119. 120. 121. 122. 123.M. N. M1. M2.M3.N4. N3. N2. 601. 602. 603.A 604. ( 0-9 ) 605. 606. 607. 608.B 609. 610. 612. 613. 614. 800. 801. 802.803. 804. 805. 902. 903. 905. 906. 907. 908. 909. 1001. 1002. 1003. 1004. 1005 1008.1009. 1016. 1100. 1101. 1102. 1104.1105. 1106.
The specific embodiment
In conjunction with view main parts size of the present invention is installed and function, be described in detail
As shown in Figure 1, a kind of autonomous cruise speed system of step speed variator of motor-driven vehicle, comprise step change transmission, sample collector, comparator, memory device, executive item, sample collector comprises accelerator pedal sensor 101, throttle angle level sensor 102, engine speed sensor 103, car speed sensor 104, function is good for box 105, its mouth links to each other with comparator, comparator, memory device is a computing machine 100, the other end of computing machine 100 links to each other with executive item, executive item comprises stepping motor, a plurality of master cocies, each master cock respectively with the shift-disengaging device of change-speed box, rail-selecting device, shift-shifting device and clutch equipment link to each other.Have the converter speed ratio and the pairing speed of a motor vehicle section of each gear in the computing machine 100, the upper and lower speed of a motor vehicle point of this speed of a motor vehicle section has constituted comparison point (as shown in Figure 5).
Function key box 105, throttle angle level sensor 102, engine speed sensor 103, car speed sensor 104, together with the information input computing machine 100 that obtains, by not had fixed upper and lower off-gear line to compare with computing machine 100 inside, make and judge it is to maintain the original state, or send shifting commands, power and make change-speed box become neutral for stepping motor, relay A108 to off-gear electromagnetic valve 118, about 0.3 second consuming time, the speed of a motor vehicle that computing machine is gathered according to car speed sensor 104 has been determined the target gear, and rail is selected in instruction; Relay is powered to selecting the rail electromagnetic valve to select rail, about 0.2 paper money consuming time; Its repeat circuit B109 leads to the first track electromagnetic valve 119 at the change-speed box first shift fork place or the 3rd track electromagnetic valve 120 that relay C110 leads to change-speed box the 3rd shift fork place, instruct again and recently control engine speed by the gear speed change to stepping motor, make that the tooth idol of target gear is synchronous apace, different gears is consuming time different, on the location of the track at the second shift fork place relies on and selects in the rail electromagnetic valve, the down common effect of two springs 903, the commands relays F113 electric valve 123 of powering to clutch controller disengages the clutch again, and retaining is dialled in instruction simultaneously; Its repeat circuit D111 is that power supply is overlapped electromagnetic valve 121 to moving tooth before the change-speed box, and relay E112 is that moving tooth overlapped electromagnetic valve 122 after change-speed box was given in power supply.
Be depicted as scheme circuit as Fig. 2, Fig. 3, Fig. 4 a, Fig. 4 b, Fig. 4 c, it be integrated package, electronic original part, and circuit form.The function that it has is: the 1) data that throttle angular-motion transducer 102 and engine speed sensor 103 must be transmitted, extreme curve M in the formation, extreme line N under forming under the heavy load situation.Can carry out order line in these two curve intervals and determine, revise, solidify, and can access the instruction repertorie of use at any time; 2) with accelerator pedal sensor 101, throttle angle level sensor 102, engine speed sensor 103, carry out computing effectively and include the gearshift program in; 3) data that transmit with engine speed sensor 103 are carried out computing by the data that change-speed box and car speed sensor 104 import into, and what obtain change-speed box respectively keeps off converter speed ratio, together with giving an order a little on the cooresponding speed of a motor vehicle section of gear, have constituted the instruction repertorie of gearshift internal memory; 4) it must keep preferentially handling and detecting in per 0.1 second continuity, the integraty of once assurance instruction to issued instruction.
As shown in Figure 5, the X-axis of this figure is that throttle opening angle, Y-axis are the rotating speed of driving engine, and Mx is the last order line of gearshift, and Nx is the line that gives an order of gearshift, the speed of a motor vehicle during according to gearshift is determined the target gear, and the converter speed ratio of change-speed box cooperates the foundation of gearshift as the step motor control engine speed.
Be depicted as the panel and the button control path scheme drawing thereof of function key box 105 as Fig. 6 a, Fig. 6 b, this box is divided into two-layer, computing machine 100 mainboards are installed in the box, button is divided into two rows, first row by strong the arrangement is: sequence switch 601, green light 602, A corrected parameter key 603, (0-9) ten figure keys 604, reversing key 605, the second series key arrangement is: key 613, starting key 614 are shown in executive item power switch key 606, amber light 607, B corrected parameter key 608, setting key 609, autokeyer 610, elimination setting key 612, ring.
The use and the function thereof of above-mentioned button are as follows: ten figure keys of figure key 604:0 to 9 can determine to start password, help code, set F-Zero, press autokeyer 610 and promptly start the throttle autonomous cruise speed system, eliminate setting key 612 and can eliminate the speed per hour of having set, but 613 switch loud speakers are shown in ring, setting key 609, ring shows that key 613 cooperations can reset coded lock and help code, their concrete operations are, at first will be when vehicle will start by password, remaining all is an invalid code except help code, can arbitrarily be added on before the password or password after, but can not be inserted in the middle of the password, password still works, at this moment green light is bright, open electric switch then, if not inputing password just opens electric switch or pushes the wrong password for the first time, having ring shows, if above-mentioned feelings take place for the second time, have caution, the just identical help code of pressing takes place for the third time, computing machine directly sends the signal of seeking help from signal emission port 116, in a single day the signal of seeking help sends, if not eliminating it is continuously to launch, vehicle is stolen can to find vehicle (help key according to this signal news speed, signal emission port 116 is not installed on the function key box panel, be contained in the latent place of keeping away), if revise password or help code, open electric switch, new sign indicating number just is identified to need only to press earlier to eliminate and set button 612--by original code--pressing new sign indicating number by setting key 609--by eliminating setting key 612----.The general qualification of on express highway, setting F-Zero, be defined as 100 kilometers as the highest speed per hour of certain express highway, two kinds of using method can be arranged, 1) be earlier by setting key 609, at this moment the dark yellow lamp of green light 6 02 607 is bright, presses numerical key 1 again, numerical key 0, by one time 0, when the speed of a motor vehicle exceeds 100 kilometers, sending ring and showing 2 again) be that to press the dark yellow lamp of the same green light of setting key 609 602 607 when the speed of a motor vehicle reaches 100 kilometers bright.There is ring to show simultaneously.Press autokeyer 610 again after setting F-Zero, throttle is with automatic guidance after three paper money clocks, vehicle is from starting automatic oiling door, self shifter fluctuation in about the speed per hour of setting 5 kilometers, also can when reaching requirement, the speed of a motor vehicle press by automatic guidance button 610, at this moment green light 602, amber light 607 are all bright, if do not set F-Zero, will be regarded as 80 kilometers of F-Zero acquiescences.Press executive item power switch key 606 power-transfer clutchs and separate automatically when idling, forward gear one retaining is hung automatically, and vehicle still is at a stop, in case the pedal throttle of stepping on the throttle leaves idle position, power-transfer clutch just engages, and vehicle is starting just.Starting key 614 is used with autokeyer 610, is the program that starts the automatic guidance throttle, will start to walk automatically after three seconds.
As shown in Figure 7, accelerator pedal sensor 101 is passed to computing machine with signal, and computing machine commander stepping motor shrinks throttle.
As shown in Figure 8, change-speed box off-gear electromagnetic valve is made up of off-gear sleeve pipe stay cord 800, stay cord joint 801, soft iron core 802, coil 803, plus-minus screw 804, binding post 805.Principle of work is: after stepping motor shrinks throttle, the driving gear of change-speed box no longer drives ring gear, if gear shift fork position at this moment in front, preceding off-gear push rod 1003 among Figure 10 is pushed preceding off-gear rocking arm 1001 open so, when change-speed box off-gear electromagnetic valve is worked, the stay cord of the soft iron core 802 pulling off-gear sleeve pipe stay cords 800 in the electromagnetic valve, preceding off-gear rocking arm 1001 and back off-gear rocking arm 1002 have been strained by stay cord joint 801, in fact at this moment back off-gear rocking arm 1002 has been into fixed point, pulling have only preceding off-gear rocking arm 1001, off-gear push rod 1003 before driving, thereby promote to dial retaining rocking arm 1008, get back to midway location and finished gear off-gear work the preceding.Gear is the same in the whole principle of work in back.
As shown in Figure 9, change-speed box select the rail electromagnetic valve by the first track electromagnetic valve 119, binding post 805, shared soft iron core 902, upper and lower two springs 903, support 905, select rail rocking arm 906, connecting pin 907, fulcrum pin 908, pull bar 909, the 3rd track electromagnetic valve 120 to form.Principle of work is: the gear shift fork of general change-speed box is distributed on three tracks, selected article one track is that relay B109 is to 119 power supplies of the first track electromagnetic valve, shared soft iron core 902 is shifted to first track, selected the 3rd track is that relay C110 is to 120 power supplies of the 3rd track electromagnetic valve, shared soft iron core 902 is shifted to the 3rd track, after the off-gear since 903 combineds action of two pull back springs in select rail rocking arm 906, make it nature be in the middle of on the position of second track, select the rail electromagnetic valve to be connected with change-speed box and select rail by pull bar 909.
As shown in figure 10, change-speed box dial the retaining electromagnetic valve by preceding off-gear rocking arm 1001, back off-gear rocking arm 1002, preceding off-gear push rod 1003, back off-gear push rod 1004, off-gear stay cord 1005, shared soft iron core 902, dial retaining rocking arm 1008, pull bar 1009, binding post 805, connecting pin 907, fulcrum pin 908, pin 1016 and form.Principle of work is: when computing machine gear converter speed ratio adjustment according to target engine speed reaches target tooth accidental resemblance during the step, power (as shown in figure 11) to power-transfer clutch electrical valve 123 with regard to commands relays F113, vacuum valve 1104 work have spurred the joint 1106 of power-transfer clutch sleeve pipe stay cord 1105, link with the power-transfer clutch outer rocker arm, disengaging the clutch, (disengaging of clutch speed is 0.5 second, engaging speed is 2 seconds), retaining electromagnetic valve (as shown in figure 11) work is dialled in instruction, simultaneously to the relay power supply of dialling the retaining electromagnetic valve.The task of dialling the retaining electromagnetic valve exactly from neutral dial forward retaining or after pull out retaining, so because three tracks, six gears of can dragging on are respectively arranged.Relay F111 is that power supply gives preceding moving tooth cover electromagnetic valve 121 work, push away before driving group retaining rocking arm 1008, by pull bar 1009 cover of the tooth on the respective rail in the change-speed box is pushed away forward, played to dial forward retaining, off-gear rocking arm 1001 was prepared for this retaining off-gear before off-gear push rod 1003 promoted before driving simultaneously.Relay E112 pulls out 122 for the power supplies of tooth cover electromagnetic valve after being, drive to dial retaining rocking arm 1008 pushers by pull bar 1009 with the tooth cover on the respective rail in the change-speed box to pusher, so just played to dial backward retaining, driven back off-gear push rod 1004 promotion back off-gear rocking arms 1002 simultaneously and prepare for this retaining off-gear.
[one]: accelerator pedal sensor: (a) with accelerator pedal position, the information of direction and velocity variations offers computing machine, make turning to of judgement control step motor by computing machine, rotating speed, thereby drive throttle, (b) avoid disturbing stepping motor to the control of position, throttle angle when shifting gears because of the mechanical connection of Das Gaspedal and throttle, (c) can realize that computing machine controls the signal of the unconventional variation of Das Gaspedal, (d) can realize that computing machine carries out automatic guidance to position, throttle angle, and with position, per 0.1 second open the throttle wide angle 3 degree, when just keeping weighing apparatus speed, the speed of a motor vehicle that reaches setting travels, within 5 kilometers of the errors, (E) can limit is that per 0.1 second change position, throttle angle is less than 3 degree, if position, throttle angle is greater than 3 degree, computing machine still by the running of 3 degree control step motors, incorporate next byte into and calculate by remaining sum.Less than 3 degree, computing machine is pressed the work of actual at that time commander's stepping motor up to 0.1 second a certain moment accumulative total,
[two]: the step of gearshift and executive device:
The step of gearshift is: instruction, stepping motor, off-gear, select rail, stepping motor, dial retaining.
Off-gear: the former gear of shifting gears connects and must separate, commands relays B108 powered to off-gear electromagnetic valve 118 (as shown in Figure 8) when computing machine 100 instruction step motors 107 shrank throttle, strain off-gear stay cords 1005 with preceding off-gear rocking arm 1001 and back off-gear rocking arm 1002 by off-gear sleeve pipe stay cord 800, thereby off-gear push rod 1003 and back off-gear push rod 1004 advance before making, push the retaining rocking arm 1008 that pulls out that pulls out on the retaining electromagnetic valve to middle neutral gear position, thereby finished off-gear work (as shown in figure 10).
Select rail: the gear shift fork of general change-speed box is distributed on three tracks, selected article one track is that relay B109 is to 119 power supplies of the first track electromagnetic valve.Selected the 3rd track is that relay C110 is to 120 power supplies of the 3rd track electromagnetic valve, after the off-gear since 903 combineds action of two pull back springs in select rail rocking arm 906, make it nature be in the middle of on the position of second track (as shown in Figure 9).Select the rail electromagnetic valve to be connected with change-speed box and select rail by pull bar 909.
Dial retaining: when computing machine gear converter speed ratio adjustment according to target engine speed reaches target tooth accidental resemblance during the step, power (as shown in figure 11) to the electric valve 123 of power-transfer clutch with regard to commands relays F113, vacuum valve 1104 work have spurred the joint 1106 of sleeve pipe stay cord 1104, link with the power-transfer clutch outer rocker arm, disengaging the clutch, (disengaging of clutch speed is 0.5 second, engaging speed is 2 seconds), retaining electromagnetic valve (as shown in figure 11) work is dialled in instruction, simultaneously to the relay power supply of dialling the retaining electromagnetic valve.The task of dialling the retaining electromagnetic valve exactly from neutral dial forward retaining or after pull out retaining, so because three tracks, six gears of can dragging on are respectively arranged.Relay F111 is that preceding group of retaining electromagnetic valve 121 work are given in power supply, drive pushes away before dialling retaining rocking arm 1008, by pull bar 1009 cover of the tooth on the respective rail in the change-speed box has been boosted the effect of dialling retaining forward forward, and off-gear rocking arm 1001 was prepared for this retaining off-gear before the preceding off-gear push rod 1003 of drive simultaneously promoted.Relay E112 is to pulling out 122 for the power supplies of retaining electromagnetic valve, drive group retaining rocking arm 1008 pushers and by pull bar 1009 the tooth cover on the respective rail in the change-speed box has so just been played to dial backward retaining to pusher, off-gear rocking arm 1002 was prepared for this retaining off-gear after off-gear push rod 1004 promoted after driving simultaneously.
When automobile when a certain gear travels, the speed of a motor vehicle has reached speed of a motor vehicle section end points, sending shifting commands slows down for the interior gear driving gear rotating speed of executive item stepping motor 107 counter-rotating change-speed boxs, 0.1 second computer instruction off-gear electromagnetic valve 118 work, change-speed box is among the neutral after the off-gear, because the source of instruction is clear and definite, just the target gear is clear and definite, in order to make the target tooth accidental resemblance step from new group of retaining, just instruction step motor 107 control throttles 117 are adjusted the rotating speed of driving engine, when the tooth accidental resemblance of target gear goes on foot, just instruct the electric valve 123 of power-transfer clutch to work, the work of retaining electromagnetic valve is dialled in instruction simultaneously, and target tooth coupling knot has just been finished the once task of shifting gears like this.
Commander's change-speed box is sought retaining automatically and is dialled in, and is that computing machine relies on the speed of a motor vehicle at that time to determine gear under the situation of off-gear, should equal the speed of a motor vehicle (transmission shaft rotating speed) when taking advantage of the converter speed ratio of target gear by gear converter speed ratio s operation control engine speed, dials retaining work.Having finished above-mentioned executive item in computing machine affirmation work all cuts off the power supply.
1: upshift: computer starting upshift program, because clear and definite next gear arranged, after off-gear, continue to shrink throttle, start simultaneously and select rail, when the rotating speed of driving gear continues to slow to the driven gear synchronization, just commands relays F113 energising, the electric valve 123 operative clutch separation of power-transfer clutch is dialled the retaining electromagnetic valve simultaneously and is also worked, and this retaining is just dialled in.Check out that at computing machine above-mentioned executive item all cuts off the power supply after a upshift job is finished.
2: downshift: computer starting downshift program, because clear and definite next gear is arranged, horse back open the throttle wide after off-gear, when the rotating speed of driving gear is brought up to the driven gear synchronization, just commands relays F113 energising, the electric valve 123 operative clutch separation of power-transfer clutch is dialled the retaining electromagnetic valve simultaneously and is also worked, and this retaining is just dialled in.Check out that at computing machine above-mentioned executive item all cuts off the power supply after a downshift job is finished.
As shown in figure 11, the vacuum puller system of power-transfer clutch automatic clutch is: be made up of vacuum cylinder 1100, vacuum cylinder interface 1101, vacuum pipe 1105, the electric valve 123 of power-transfer clutch, vacuum valve 1104, sleeve pipe stay cord 1105, telescopic joint 1106.
Principle of work is: vacuum cylinder 1100 connects by air intake branch or vacuum pump on vacuum cylinder interface 1101 and the car.Just power to the electric valve 123 of power-transfer clutch when relay F113 obtains instructing, drive vacuum valve 1104 work, thereby disengage the clutch with the connection of power-transfer clutch outer rocker arm by the telescopic joint 1106 of sleeve pipe stay cord 1105.Electric valve 123 returns of power-transfer clutch when instruction stops; The vacuum valve 1104 and the external world communicate.Power-transfer clutch closes up, and a clutch job of power-transfer clutch is finished.Its task be with change-speed box in common elimination of synchronizer gear because the error that produces during Computing, various action of inertia and the error that the minimum time difference causes is arranged in the process that instruction forms and executive item is carried out, for variable block steadily, the speed that connects once more of power-transfer clutch is slow many when separating, designing requirement disengaging of clutch speed is within 0.5 second, and clutch engagement was at 2 seconds.
The driver's operation main points: (1) presses sequence switch, and (2) open coded lock, (3) starting, and (4) warm machine, these 4 is necessary.
(A) advance: (1) can be manual when not pressing executive item source switch 606, operates by the technical ability of chaufeur; (2) press executive item source switch 606, at this moment power-transfer clutch separates automatically, one retaining is hung automatically, vehicle still is at a stop, as long as the open the throttle wide vehicle just begins to move ahead, vehicle ' also just changes with throttle, the speed of a motor vehicle reaches automatic swap-in two retainings when going up of the fast section of keeping off a car instructed point, along with the quickening of the speed of a motor vehicle, go up the instruction point just toward the retaining that rises when what the speed of a motor vehicle was raised to this gear speed of a motor vehicle section, otherwise along with the decline of the speed of a motor vehicle drops to giving an order a little just toward decline one retaining of this gear speed of a motor vehicle section when the speed of a motor vehicle; (3) press autokeyer 610, at this moment power-transfer clutch separates automatically, and a retaining is hung automatically, and vehicle is starting automatically after three seconds, automatic oiling, and self shifter is until default speed per hour.
(B) reversing: (1) can be manual when not pressing executive item source switch 606, should be the convenient method of using always in general; (2) press executive item source switch 606, press reversing key 605, at this moment power-transfer clutch separates automatically, backward gear is hung automatically, vehicle still is at a stop, as long as the open the throttle wide vehicle just begins backward, reversing finishes and can press the starting key, at this moment but car still is at a stop and has hung into the retaining that advances, as long as step on the gas just can be started to walk.
(C): sequence switch key 601 and executive item source switch 606: sequence switch key 601 is switches of start-up routine, it is the prerequisite that starts vehicle, executive item source switch 606 is executive item source switchs, 2 effects are arranged when closing, first chaufeur is M/C fully, uses when its two chaufeur can or slide when overtaking other vehicles.
Some data on the test car:
Vehicle is to use a brand new three cylinder multiple spot EFI dollies, 900 rev/mins of engine idles, and 6000 rev/mins of engine peak speeds, 120 kilometers of speed of a motor vehicle F-Zeros/time.
It is shared with it that accelerator pedal sensor adopts electric potential type, throttle signal to ride on the level sensor of former car throttle angle, and the engine speed sensor revolution sends 20 signals, and transmission shaft sensor revolution sends 23 signals.
The converter speed ratio of driving engine/transmission shaft by the signal that the unit time (the following unit time is 0.1 second) collects, is calculated the signal ratio and is:
One retaining is 200/65 to be that 3 two retainings are 183/100 to be 1.83
Three retainings are 180/144 to be that 1.25 four retainings are 95/111 to be 0.864
Driving engine with transmission shaft rotary speed signal ratio is: a retaining; Two retainings; Three retainings; Four retainings 3; 1.83; 1.25; 0.864;
Driving engine and transmission shaft revolution ratio are: a retaining; Two retainings; Three retainings; Four retainings 3.47; 2.12; 1.45; 1
Each keeps off upshift instruction speed of a motor vehicle point: 25 kilometers/hour on a retaining rises that 45 kilometers/hour of two retaining M1, two retainings rise three retaining M2, three retainings rise four retaining M3 for 65 kilometers/hour,
Retaining rises transmission shaft rotary speed signal number: 42 on a retaining rises two retainings, two 75 on retainings and rises three retainings, three and keep off 109 and rise four retainings,
Each keeps off downshift instruction speed of a motor vehicle point: 20 kilometers/hour on two retainings fall 40 kilometers/hour of retaining N2, three retainings fall 60 kilometers/hour of two retaining N3, four retainings fall three retaining N4,
Transmission shaft rotary speed signal number falls in retaining: a retaining falls in two 60 on retainings, and two retainings fall in three 96 on retainings, and three retainings fall in four 147 on retainings.
Disengaging of clutch speed is 0.5 second during starting, and clutch engagement is 2 seconds, and disengaging of clutch speed is 0.5 second during gearshift, and speed is 1 second when rejoining.
Per 0.1 second of throttle angular transposition is less than 3 degree.
Claims (6)
1. the autonomous cruise speed system of a step speed variator of motor-driven vehicle, comprise step change transmission, it is characterized in that, it also comprises sample collector, comparator, memory device, executive item, sample collector also comprises accelerator pedal sensor (101), engine speed sensor (103), car speed sensor (104), its mouth links to each other with comparator, comparator, memory device is computing machine (100), the other end of computing machine (100) links to each other with executive item, executive item comprises stepping motor, a plurality of master cocies, the other end of stepping motor links to each other with throttle, each master cock respectively with the shift-disengaging device of change-speed box, rail-selecting device, shift-shifting device, clutch equipment links to each other.
2. the autonomous cruise speed system of step speed variator of motor-driven vehicle according to claim 1 is characterized in that, sample collector also comprises throttle angle level sensor (102), and its mouth links to each other with comparator.
3. the autonomous cruise speed system of step speed variator of motor-driven vehicle according to claim 1, it is characterized in that, computing machine has speed of a motor vehicle section in (100), the upper and lower speed of a motor vehicle point of this speed of a motor vehicle section has constituted comparison point, a M that goes up most of speed of a motor vehicle section is a upshift instruction point, and the most following N of speed of a motor vehicle section is a downshift instruction point.
4. the autonomous cruise speed system of step speed variator of motor-driven vehicle according to claim 1, it is characterized in that, sample collector also comprises throttle angular-motion transducer (102), its mouth links to each other with comparator, computing machine has speed of a motor vehicle section in (100), on this speed of a motor vehicle section, following speed of a motor vehicle point has constituted comparison point, a M that goes up most of speed of a motor vehicle section is a upshift instruction point, the most following some N of speed of a motor vehicle section is downshift instruction point, by accelerator pedal sensor (101), throttle angle level sensor (102), engine speed sensor (103), car speed sensor (104), with the information input computing machine (100) that obtains, by with computing machine (100) inner set on, following off-gear curve is compared, computing machine is made judgement and is maintained the original state, or send instruction and give executive item, master cock is a relay, stepping motor (107) shrinks throttle (117), relay A (108) leads to off-gear electromagnetic valve (118) makes change-speed box become neutral, computing machine is again according to engine speed sensor this moment (103), the engine speed that car speed sensor (104) is gathered and the speed of a motor vehicle are calculated converter speed ratio, compare with the parameter of the gear of computing machine (100) internal memory, and the instruction of correct gear passed to executive item, its repeat circuit B (109) leads to the change-speed box first track electromagnetic valve (119), relay C (110) leads to change-speed box the 3rd track electromagnetic valve (120), relay F (113) leads to the electric valve of power-transfer clutch (123), relay D (111) is that moving tooth overlaps electromagnetic valve (121) before leading to change-speed box, and relay E (112) pulls out tooth cover electromagnetic valve (122) after leading to change-speed box.
5. the autonomous cruise speed system of step speed variator of motor-driven vehicle according to claim 1, it is characterized in that, it also comprises function box (105), its mouth links to each other with comparator, import the command information that obtains into computing machine (100), access computing machine (100) internal processes, vehicle is controlled.
6. the autonomous cruise speed system of step speed variator of motor-driven vehicle according to claim 1 is characterized in that, the stepping motor off-gear, selects rail, dials retaining, and their the intervention time of power-transfer clutch is 0.1 second multiple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021381410A CN1185119C (en) | 2002-08-16 | 2002-08-16 | Automatic control system for step speed variator of motor-driven vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021381410A CN1185119C (en) | 2002-08-16 | 2002-08-16 | Automatic control system for step speed variator of motor-driven vehicle |
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| Publication Number | Publication Date |
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| CN1396074A CN1396074A (en) | 2003-02-12 |
| CN1185119C true CN1185119C (en) | 2005-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB021381410A Expired - Fee Related CN1185119C (en) | 2002-08-16 | 2002-08-16 | Automatic control system for step speed variator of motor-driven vehicle |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101837777B (en) * | 2010-05-21 | 2013-02-20 | 陈天鹏 | Manual and semi-automatic driving dual-purpose control system of automobile step speed changer |
| CN102862572B (en) * | 2012-09-29 | 2016-01-13 | 陈天鹏 | The special executive item of the dual-purpose Ride Control System of the manual S. A. of step-speed-changing automobile |
| US20170174219A1 (en) * | 2015-12-18 | 2017-06-22 | Cnh Industrial America Llc | Auto-efficiency mode for power shift transmissions |
| CN112525524B (en) * | 2020-11-30 | 2022-05-03 | 奇瑞汽车股份有限公司 | Automatic gear shifting device and automatic gear shifting method of manual transmission |
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2002
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| CN1396074A (en) | 2003-02-12 |
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Granted publication date: 20050119 Termination date: 20090816 |