CN102829178A - Transmission system shifting control method of hydraulic motor - Google Patents
Transmission system shifting control method of hydraulic motor Download PDFInfo
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- CN102829178A CN102829178A CN201210327135XA CN201210327135A CN102829178A CN 102829178 A CN102829178 A CN 102829178A CN 201210327135X A CN201210327135X A CN 201210327135XA CN 201210327135 A CN201210327135 A CN 201210327135A CN 102829178 A CN102829178 A CN 102829178A
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Abstract
The invention discloses a transmission system shifting control method of a hydraulic motor. The method comprises the steps of interrupting shift: interrupting an original shift clutch; adjusting speed: adjusting the flow of a hydraulic pump, and changing the rotation speed of the hydraulic motor, thus reducing the rotation speed difference of a driving disc and a driven disc of an objective shift clutch within a certain preset value; and engaging shift, controlling the objective shift clutch to be connected. With the adoption of the transmission system shifting control method of the hydraulic motor, the impact between the driving disc and the driven disc of the clutch while shifting is reduced greatly, and the shifting quality is improved.
Description
Technical field
The present invention relates to a kind of gear-shifting control method, particularly a kind of oil hydraulic motor transmission system gear-shifting control method.
Background technique
The oil hydraulic motor transmission system is common in the vehicle to run shifting mechanism, and general oil hydraulic motor transmission system can include: oil hydraulic pump, oil hydraulic motor, gearbox, ransaxle, driving wheel etc., and above-mentioned each parts connect successively; Power is by oil hydraulic pump and oil hydraulic motor output; Be passed to driving wheel then successively, wherein, can be integrated with existing double-clutch mechanism on the gearbox; And be connected with hydraulic motor output shaft; With the break-make that connects between control oil hydraulic motor and the gearbox, realize shiftedly, whole process is by computer system equal controller control completion.
The adjacent gear speed of common motor transmission system difference is less; Be generally about 1.5 times; Even use traditional shifted controlling method control clutch mechanism feasible, and the speed difference of the adjacent gear of oil hydraulic motor transmission system is bigger, can reach about 3 times; So big speed difference re-uses between driving disc and the driven disc that traditional shifted controlling method will make clutch and produces very big impact; Cause parts damages, and can produce the gear shift irregularity, influence a series of problems such as property of automatic shft and machinery operation quality.So how to design a kind of new gear-shifting control method, can be applicable to that the oil hydraulic motor transmission system becomes the technical problem of needing solution in the industry badly.
In view of the foregoing, the design people borrows its technical experience of association area and abundant professional knowledge for many years, and constantly research and development improve, and through a large amount of practical proofs, have proposed the technological scheme of oil hydraulic motor transmission system gear-shifting control method of the present invention.
Summary of the invention
The object of the present invention is to provide a kind of oil hydraulic motor transmission system gear-shifting control method, be applicable to the oil hydraulic motor transmission system, the impact in the time of can reducing gear shift greatly between clutch driving plate and driven disc improves property of automatic shft.
To achieve these goals, the invention provides a kind of oil hydraulic motor transmission system gear-shifting control method, comprising: step out of stock, break off former gear clutch; The speed governing step, regulator solution press pump flow changes the oil hydraulic motor rotating speed, and the driving disc of object gear clutch and the speed discrepancy of driven disc are narrowed down in the predetermined value; The engage a gear step, control target gear clutch makes its connection.
Preferably; Above-mentioned oil hydraulic motor transmission system gear-shifting control method; Wherein, said gear-shifting control method comprises that also regulating the object gear clutch makes its driving disc and driven disc be in the clutch set-up procedure of the sliding coupled condition of rubbing, the said step execution out of stock that continues of said clutch set-up procedure.
Preferably, above-mentioned oil hydraulic motor transmission system gear-shifting control method, wherein, said clutch set-up procedure and said speed governing step are carried out simultaneously.
Preferably, above-mentioned oil hydraulic motor transmission system gear-shifting control method, wherein, the cunning of object gear clutch driving plate and driven disc is rubbed to be connected and can be kept the speed of a motor vehicle of vehicle in gearshift procedure.
Preferably, above-mentioned oil hydraulic motor transmission system gear-shifting control method, wherein, in the said step out of stock, control gear pilot pressure control valve reduces to zero with pressure, and disengagement separates with driven disc to make the driving disc of former gear clutch.
Preferably, above-mentioned oil hydraulic motor transmission system gear-shifting control method, wherein, said pressure controlled valve is electric proportional pressure-reducing valve.
Preferably; Above-mentioned oil hydraulic motor transmission system gear-shifting control method; Wherein, in the said speed governing step, through the rotating speed of the master and slave Moving plate of sensor object gear clutch; And testing result fed back to control gear, control gear is judged speed discrepancy according to feedback signal and is controlled and adjust; Adopt flow transducer to detect the real-time traffic of oil hydraulic pump, and, change the rotating speed of oil hydraulic motor, thereby dwindle the speed discrepancy of the master and slave Moving plate of object gear clutch by the flow of control gear adjustment oil hydraulic pump.
Preferably, above-mentioned oil hydraulic motor transmission system gear-shifting control method wherein, comes solenoidoperated cluthes actions through the pilot pressure control valve, each clutch respectively by a pressure controlled valve control or a plurality of clutches by a pressure controlled valve centralized control.
Preferably, above-mentioned oil hydraulic motor transmission system gear-shifting control method, wherein, a plurality of clutches are during by a pressure controlled valve centralized control, and the output terminal of pressure controlled valve divides many oil circuits to connect a plurality of clutches, and on each bar oil circuit, the oil circuit switch is set.
From the above, oil hydraulic motor transmission system gear-shifting control method of the present invention has advantage and characteristics:
1, oil hydraulic motor transmission system gear-shifting control method of the present invention changes the rotating speed of oil hydraulic motor through the flow of regulator solution press pump in gearshift procedure, thereby drives the object gear clutch driving plate; The rotating speed difference of itself and object gear clutch driven plate is reduced in the predetermined value; That is to say that the driving disc that makes the object gear clutch and the speed discrepancy of driven disc reduce to very little, even disappear, put into gear again; Thereby can reduce the impact between driving disc and the driven disc greatly; Avoid parts damages, prolong parts working life, and improve property of automatic shft.
2, oil hydraulic motor transmission system gear-shifting control method of the present invention is in gearshift procedure, thereby changes the coupled condition of clutch through the pressure controlled valve pilot pressure, when former gear clutch breaks off when connecting; Rapidly through pressure controlled valve control target gear clutch; Make the driving disc and the driven disc of object gear clutch be in the sliding state that rubs, " the clutch half connects " state that just is commonly called as is after regulator solution pressure motor rotating speed; Through pressure controlled valve the target clutch is connected rapidly again; Can guarantee the continuity and the rapidity of whole gear shift action like this, further promote property of automatic shft, and can reduce the loss of velocity of vehicle.
3, the clutch controlled of oil hydraulic motor transmission system gear-shifting control method of the present invention can be two or more a plurality of; Controlling method to complicated multi-clutch mechanism is identical with the dual clutch mechanism controlling method; Can accomplish complicated shifted action; And can effectively reduce the impact force between each clutch driving plate, driven disc in the gearshift procedure, and avoid equipment failure, guarantee higher property of automatic shft.
4, oil hydraulic motor transmission system gear-shifting control method of the present invention is based on existing oil hydraulic motor transmission system and designs, and step is simple, controls conveniently, is suitable for applying.
Description of drawings
Fig. 1 is an oil hydraulic motor transmission system gear-shifting control method steps flow chart schematic representation of the present invention;
Fig. 2 is another embodiment's steps flow chart schematic representation of oil hydraulic motor transmission system gear-shifting control method of the present invention;
Fig. 3 is the Clutch Control principle schematic.
Embodiment
To understand in order technical characteristics of the present invention, purpose and effect being had more clearly, contrast description of drawings embodiment of the present invention, but it to be merely preferred embodiment at present, be not used for limiting essential scope of the present invention.
Please combine with reference to figure 1 and Fig. 3; Wherein Fig. 1 is an oil hydraulic motor transmission system gear-shifting control method steps flow chart schematic representation of the present invention; Fig. 3 is the Clutch Control principle schematic; As shown in the figure, oil hydraulic motor transmission system gear-shifting control method of the present invention mainly comprises the steps: step out of stock, breaks off former gear clutch; The speed governing step, regulator solution press pump flow, thus change the oil hydraulic motor rotating speed, the driving disc of object gear clutch and the speed discrepancy of driven disc are narrowed down in the predetermined value; The engage a gear step, control target gear clutch makes its connection.
About the structure of oil hydraulic motor transmission system, comprise that the control gear etc. of each parts action in two clutches that its inside comprises or many clutch mechanismes, gearbox and the control gearshift procedure all has been no longer to specify conventional structure.
Gear shift begins, and carries out step out of stock, breaks off former gear clutch.The action of former gear clutch and object gear clutch all can be controlled through pressure controlled valve by control gear; This has been than mature technique; In simple terms; Control gear pilot pressure control valve reduces to zero with pressure, and disengagement separates the driving disc of former gear clutch with driven disc, the power of oil hydraulic motor can not be again through former gear clutch transmits to gearbox.The optional electricity consumption proportional pressure-reducing valve of pressure controlled valve wherein, control gear can be computer controlled system.
Carry out the speed governing step, regulator solution press pump flow, thus change the oil hydraulic motor rotating speed, the driving disc of object gear clutch and the speed discrepancy of driven disc are narrowed down in the predetermined value.Specifically, control gear is received former gear clutch cut-off signal, the flow of control break oil hydraulic pump immediately; Thereby change the rotating speed of oil hydraulic motor; About corresponding relation and the action principle between oil hydraulic pump flow and the oil hydraulic motor rotating speed, be than mature technique, no longer specify.
Because the driving disc rotating speed of former gear clutch and object gear clutch all keeps the fixed proportion relation with the oil hydraulic motor rotating speed; So change the driving disc rotating speed that the oil hydraulic motor rotating speed has also just changed former gear clutch and object gear clutch simultaneously; Particularly for the object gear clutch; Because one of main purpose of the present invention is the speed discrepancy that dwindles object gear clutch driving plate and driven disc, before the object gear clutch, corresponding vehicle running speed at that time; The object gear clutch driven plate itself has certain rotating speed; According to perhaps the gear shift direction from the bottom gear gear up is different from the top gear gear down, this moment, object gear clutch driven plate rotating speed possibly be greater than or less than the rotating speed (rotating speed of oil hydraulic motor just) of object gear clutch driving plate at that time, and both speed discrepancies maybe be bigger; If directly engage, can produce fierce impact.Before the object gear clutch, control gear can detect at that time object gear clutch driving plate and the rotating speed of driven disc through parts such as sensor, in the speed governing step; Change the rotating speed of oil hydraulic motor through the flow of regulator solution press pump; Just changing the driving disc rotating speed of object gear clutch, possibly be to improve its rotating speed or reduce its rotating speed, makes the driving disc rotating speed of object gear clutch move closer to its driven disc rotating speed; Dwindle within the driving disc, driven disc speed discrepancy to a predetermined value of object gear clutch; This predetermined value is generally less, and for example this predetermined value is 150rpm (rpm) in the present embodiment, thereby rejoins after reducing within the predetermined value when driving disc, the driven disc speed discrepancy of object gear clutch; With fierce impact can not take place; Avoid parts damages, prolong its working life, and improve property of automatic shft.The predetermined value of above-mentioned speed discrepancy can correspondingly be adjusted according to different working conditions, does not do concrete qualification, and optimal state is that the driving disc of object gear clutch, driven disc speed discrepancy are zero, engage when rotating with speed will make to impact to reduce to minimum.In the process of above-mentioned rotational speed regulation, can be through the rotating speed of the conventional master and slave Moving plate of sensor object gear clutch, and testing result fed back to control gear, judge speed discrepancy according to feedback signal and control in real time and adjust by control gear; In addition; In the process of regulator solution press pump flow and oil hydraulic motor rotating speed, also can adopt conventional flow transducer to detect the real-time traffic of oil hydraulic pump, and come to transfer in real time big or turn the flow of oil hydraulic pump down by control gear; Change the rotating speed of oil hydraulic motor; And then dwindle the speed discrepancy of the master and slave Moving plate of object gear clutch, the above-mentioned technology that detects and control according to sensor etc. is for than mature technique, no longer further explain.
After reducing to driving disc, the driven disc speed discrepancy of object gear clutch within the predetermined value, carry out the engage a gear step, control target gear clutch connects, and the driving disc of object gear clutch is connected with driven disc.After control gear judged that driving disc, the driven disc speed discrepancy of object gear clutch are reduced within the predetermined value, control gear made the object gear clutch through the pilot pressure of pressure controlled valve accent general objective gear clutch, accomplishes gearshift procedure.
Please combine with reference to figure 2; Be another embodiment's steps flow chart schematic representation of oil hydraulic motor transmission system gear-shifting control method of the present invention; In the present embodiment; Gear-shifting control method of the present invention comprises that also regulating the object gear clutch for one makes its driving disc and driven disc be in the clutch set-up procedure of the sliding coupled condition of rubbing, and the continue step execution out of stock of the foregoing description of this clutch set-up procedure can be carried out with above-mentioned speed governing step simultaneously.Specifically; After former gear clutch broke off, control gear increased the object gear clutch pressure through pressure controlled valve rapidly, made its driving disc and driven disc be in the sliding coupled condition of rubbing; " the clutch half connects " state that just is commonly called as; The pilot pressure size of object gear clutch is detected and control by control gear in real time, for example can carry out Pressure testing through the pressure transducer of routine, controls and adjust pressure through pressure controlled valve (for example conventional electric proportional pressure-reducing valve) again; This kind detection and controlling method have been than mature technique, no longer specify.
This kind cunning is rubbed and is had certain power transmission between driving disc and the driven disc under the coupled condition, and in the present embodiment, the cunning of object gear clutch driving plate and driven disc is rubbed to be connected and can be made vehicle in gearshift procedure, keep the speed of a motor vehicle, thereby avoids loss of velocity.The size control of clutching pressure can be passed through and test and calculate under the sliding coupled condition of rubbing; And can data variation rule that calculate gained etc. be input in the control gear; Specifically control in the reality driving by control gear; About the size control of clutch pressure under the sliding state that rubs, be than mature technique, no longer specify.
Finish in the adjustment of oil hydraulic motor (object gear clutch driving plate) rotating speed; After just above-mentioned speed governing step is accomplished; Control gear adjustment pressure controlled valve further increases the object gear clutch pressure, and object gear clutch driving plate, driven disc are connected fully, accomplishes gearshift procedure.
More than be the steps flow chart of oil hydraulic motor transmission system gear-shifting control method of the present invention, the impact when utilizing gear-shifting control method of the present invention to reduce gear shift greatly between clutch driving plate and driven disc improves property of automatic shft.
In addition, gear-shifting control method of the present invention can be applicable to have the transmission system of double-clutch mechanism, also can be applicable to have the transmission system of more clutch mechanismes, and its controlling method is identical with control principle.Each clutch can also can be a plurality of clutches by a pressure controlled valve centralized control by the control of pressure controlled valve, is that the output terminal at pressure controlled valve divides many oil circuits to connect a plurality of clutches in simple terms; And on each bar oil circuit, the oil circuit switch is set; In the time of need moving control to which clutch, promptly open corresponding oil circuit switch, remaining oil circuit switch cuts out; This technology is that those skilled in the art are easier to associate, so repeat no more.
The above is merely the schematic embodiment of the present invention, is not in order to limit scope of the present invention.Any those skilled in the art, equivalent variations of under the prerequisite that does not break away from design of the present invention and principle, having done and modification all should belong to the scope that the present invention protects.
Claims (9)
1. oil hydraulic motor transmission system gear-shifting control method is characterized in that said gear-shifting control method comprises:
Step out of stock is broken off former gear clutch;
The speed governing step, regulator solution press pump flow changes the oil hydraulic motor rotating speed, and the driving disc of object gear clutch and the speed discrepancy of driven disc are narrowed down in the predetermined value;
The engage a gear step, control target gear clutch makes its connection.
2. oil hydraulic motor transmission system gear-shifting control method according to claim 1; It is characterized in that; Said gear-shifting control method comprises that also regulating the object gear clutch makes its driving disc and driven disc be in the clutch set-up procedure of the sliding coupled condition of rubbing, the said step execution out of stock that continues of said clutch set-up procedure.
3. oil hydraulic motor transmission system gear-shifting control method according to claim 2 is characterized in that, said clutch set-up procedure and said speed governing step are carried out simultaneously.
4. according to claim 2 or 3 described oil hydraulic motor transmission system gear-shifting control methods, it is characterized in that the cunning of object gear clutch driving plate and driven disc is rubbed to be connected and can be kept the speed of a motor vehicle of vehicle in gearshift procedure.
5. oil hydraulic motor transmission system gear-shifting control method according to claim 1 is characterized in that, in the said step out of stock, control gear pilot pressure control valve reduces to zero with pressure, and disengagement separates with driven disc to make the driving disc of former gear clutch.
6. oil hydraulic motor transmission system gear-shifting control method according to claim 5 is characterized in that said pressure controlled valve is electric proportional pressure-reducing valve.
7. oil hydraulic motor transmission system gear-shifting control method according to claim 1; It is characterized in that; In the said speed governing step; Through the rotating speed of the master and slave Moving plate of sensor object gear clutch, and testing result fed back to control gear, control gear is judged speed discrepancy according to feedback signal and is controlled and adjust; Adopt flow transducer to detect the real-time traffic of oil hydraulic pump, and, change the rotating speed of oil hydraulic motor, thereby dwindle the speed discrepancy of the master and slave Moving plate of object gear clutch by the flow of control gear adjustment oil hydraulic pump.
8. oil hydraulic motor transmission system gear-shifting control method according to claim 1; It is characterized in that; Come solenoidoperated cluthes actions through the pilot pressure control valve, each clutch respectively by a pressure controlled valve control or a plurality of clutches by a pressure controlled valve centralized control.
9. oil hydraulic motor transmission system gear-shifting control method according to claim 8; It is characterized in that; A plurality of clutches are during by a pressure controlled valve centralized control, and the output terminal of pressure controlled valve divides many oil circuits to connect a plurality of clutches, and on each bar oil circuit, the oil circuit switch is set.
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| CN201210327135XA CN102829178A (en) | 2012-09-06 | 2012-09-06 | Transmission system shifting control method of hydraulic motor |
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| CN201210327135XA CN102829178A (en) | 2012-09-06 | 2012-09-06 | Transmission system shifting control method of hydraulic motor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791482A (en) * | 2015-04-01 | 2015-07-22 | 洛阳理工学院 | Power matching method for hydrostatic system and power gear-shift speed changing box |
| CN106758600A (en) * | 2017-02-24 | 2017-05-31 | 株洲时代电子技术有限公司 | A kind of rail grinding machine traveling process for gear |
| CN106763743A (en) * | 2016-12-26 | 2017-05-31 | 潍柴动力股份有限公司 | A kind of hydrostatic transmissions move gear-shifting control method and system |
| CN106868964A (en) * | 2017-02-24 | 2017-06-20 | 株洲时代电子技术有限公司 | A kind of rail grinding machine traveling shifting system |
| CN107344549A (en) * | 2017-05-24 | 2017-11-14 | 广州汽车集团股份有限公司 | manual gear vehicle shift control method, device and control system |
| CN109210186A (en) * | 2017-07-03 | 2019-01-15 | 罗伯特·博世有限公司 | Running driving device and method for manipulating running driving device |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0617928A (en) * | 1992-07-03 | 1994-01-25 | Kubota Corp | Hydrostatic continuously variable transmission for travel |
| US5529546A (en) * | 1994-02-18 | 1996-06-25 | Kabushkik Kaisha Komatsu Seisakusho | Forward/reverse drive and stop control system for hydrostatic -mechanical transmissions |
| CN2540535Y (en) * | 2002-05-05 | 2003-03-19 | 浙江临海海宏集团有限公司 | Electrohydraulic control variable-speed application valve |
| CN1936374A (en) * | 2005-09-22 | 2007-03-28 | 各特拉格·福特传动***公司 | Hydraulic controller for an automated double clutch gearbox |
| CN1987163A (en) * | 2005-12-21 | 2007-06-27 | 丰田自动车株式会社 | Failure determining apparatus and method for hydraulic pressure control circuit |
| CN101156007A (en) * | 2005-12-16 | 2008-04-02 | 博世力士乐股份有限公司 | Hydrostatic drive and method for braking a hydrostatic drive |
| CN102226468A (en) * | 2011-05-06 | 2011-10-26 | 三一重工股份有限公司 | Method, device and system for controlling engineering machinery gear shifting |
| CN202125591U (en) * | 2011-06-29 | 2012-01-25 | 上海申赛机电控制技术有限公司 | Combined type pilot control shift valve |
| CN102338215A (en) * | 2011-08-23 | 2012-02-01 | 三一重工股份有限公司 | Hydraulically and mechanically driven engineering machinery as well as gear shift control system and method thereof |
| CN102494126A (en) * | 2011-12-13 | 2012-06-13 | 三一重工股份有限公司 | Monitoring method for gear shift process and system |
| CN102537329A (en) * | 2012-02-06 | 2012-07-04 | 三一重工股份有限公司 | Power gear shift speed change bridge and engineering machinery |
| CN202370926U (en) * | 2011-12-16 | 2012-08-08 | 第一拖拉机股份有限公司 | Power commutation control valve block assembly for tractor |
-
2012
- 2012-09-06 CN CN201210327135XA patent/CN102829178A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0617928A (en) * | 1992-07-03 | 1994-01-25 | Kubota Corp | Hydrostatic continuously variable transmission for travel |
| US5529546A (en) * | 1994-02-18 | 1996-06-25 | Kabushkik Kaisha Komatsu Seisakusho | Forward/reverse drive and stop control system for hydrostatic -mechanical transmissions |
| CN2540535Y (en) * | 2002-05-05 | 2003-03-19 | 浙江临海海宏集团有限公司 | Electrohydraulic control variable-speed application valve |
| CN1936374A (en) * | 2005-09-22 | 2007-03-28 | 各特拉格·福特传动***公司 | Hydraulic controller for an automated double clutch gearbox |
| CN101156007A (en) * | 2005-12-16 | 2008-04-02 | 博世力士乐股份有限公司 | Hydrostatic drive and method for braking a hydrostatic drive |
| CN1987163A (en) * | 2005-12-21 | 2007-06-27 | 丰田自动车株式会社 | Failure determining apparatus and method for hydraulic pressure control circuit |
| CN102226468A (en) * | 2011-05-06 | 2011-10-26 | 三一重工股份有限公司 | Method, device and system for controlling engineering machinery gear shifting |
| CN202125591U (en) * | 2011-06-29 | 2012-01-25 | 上海申赛机电控制技术有限公司 | Combined type pilot control shift valve |
| CN102338215A (en) * | 2011-08-23 | 2012-02-01 | 三一重工股份有限公司 | Hydraulically and mechanically driven engineering machinery as well as gear shift control system and method thereof |
| CN102494126A (en) * | 2011-12-13 | 2012-06-13 | 三一重工股份有限公司 | Monitoring method for gear shift process and system |
| CN202370926U (en) * | 2011-12-16 | 2012-08-08 | 第一拖拉机股份有限公司 | Power commutation control valve block assembly for tractor |
| CN102537329A (en) * | 2012-02-06 | 2012-07-04 | 三一重工股份有限公司 | Power gear shift speed change bridge and engineering machinery |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791482A (en) * | 2015-04-01 | 2015-07-22 | 洛阳理工学院 | Power matching method for hydrostatic system and power gear-shift speed changing box |
| CN106763743A (en) * | 2016-12-26 | 2017-05-31 | 潍柴动力股份有限公司 | A kind of hydrostatic transmissions move gear-shifting control method and system |
| CN106763743B (en) * | 2016-12-26 | 2019-02-12 | 潍柴动力股份有限公司 | A kind of mobile gear-shifting control method of hydrostatic transmissions and system |
| CN106758600A (en) * | 2017-02-24 | 2017-05-31 | 株洲时代电子技术有限公司 | A kind of rail grinding machine traveling process for gear |
| CN106868964A (en) * | 2017-02-24 | 2017-06-20 | 株洲时代电子技术有限公司 | A kind of rail grinding machine traveling shifting system |
| CN107344549A (en) * | 2017-05-24 | 2017-11-14 | 广州汽车集团股份有限公司 | manual gear vehicle shift control method, device and control system |
| CN107344549B (en) * | 2017-05-24 | 2019-12-13 | 广州汽车集团股份有限公司 | gear shifting control method, gear shifting control device and gear shifting control system for manual transmission vehicle |
| CN109210186A (en) * | 2017-07-03 | 2019-01-15 | 罗伯特·博世有限公司 | Running driving device and method for manipulating running driving device |
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Application publication date: 20121219 |