WO2008066169A1 - Dispositif de commande de passage de vitesse pour véhicule industriel - Google Patents
Dispositif de commande de passage de vitesse pour véhicule industriel Download PDFInfo
- Publication number
- WO2008066169A1 WO2008066169A1 PCT/JP2007/073219 JP2007073219W WO2008066169A1 WO 2008066169 A1 WO2008066169 A1 WO 2008066169A1 JP 2007073219 W JP2007073219 W JP 2007073219W WO 2008066169 A1 WO2008066169 A1 WO 2008066169A1
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- WO
- WIPO (PCT)
- Prior art keywords
- speed
- shift control
- shift
- ratio
- control device
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/18—Preventing unintentional or unsafe shift, e.g. preventing manual shift from highest gear to reverse gear
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/16—Cabins, platforms, or the like, for drivers
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2004—Control mechanisms, e.g. control levers
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
- E02F9/2079—Control of mechanical transmission
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2253—Controlling the travelling speed of vehicles, e.g. adjusting travelling speed according to implement loads, control of hydrostatic transmission
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
- F16H59/08—Range selector apparatus
- F16H59/12—Range selector apparatus comprising push button devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/16—Inhibiting or initiating shift during unfavourable conditions, e.g. preventing forward reverse shift at high vehicle speed, preventing engine over speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/36—Inputs being a function of speed
- F16H59/46—Inputs being a function of speed dependent on a comparison between speeds
- F16H2059/465—Detecting slip, e.g. clutch slip ratio
- F16H2059/467—Detecting slip, e.g. clutch slip ratio of torque converter
Definitions
- the present invention relates to a shift control device for an industrial vehicle such as a wheel loader.
- Patent Document 1 an apparatus that transmits engine output torque to a transmission via a torque converter (hereinafter, torque converter) is known (see, for example, Patent Document 1).
- the device described in Patent Document 1 calculates a speed ratio, which is the ratio of the rotational speeds of the torque converter input shaft side and output shaft side, and automatically shifts up when this speed ratio reaches a predetermined value. Or shift down.
- Patent Document 1 Japanese Patent No. 3388594
- the shift control device for an industrial vehicle includes a speed ratio detection unit that detects a speed ratio between the input shaft and the output shaft of the torque converter, and the detected speed ratio is equal to or greater than a first predetermined value.
- a shift control unit that shifts up the speed stage of the transmission and shifts down when the speed falls below a second predetermined value that is smaller than the first predetermined value, and an operation member that commands a shift down to the first speed by the operator's operation.
- the shift control unit controls the speed stage to the first speed for a predetermined time regardless of the speed ratio detected by the speed ratio detection unit when a downshift is commanded by the operation member.
- the minimum speed stage during driving should be controlled to 2nd speed.
- a speed stage setting unit for setting the maximum speed stage of the transmission by an operator's operation is further provided, and the speed stage can be limited to the set maximum speed stage or less when shifting up.
- the operation member is preferably provided at or near the work operation member for operating the work actuator.
- An industrial vehicle shift control apparatus includes a rotation speed detection unit that detects the rotation speeds of an input shaft and an output shaft of a torque converter, a solenoid control unit that drives a transmission shift solenoid, and a rotation speed detection unit.
- An input unit that inputs a signal detected by the above-described method, and a calculation unit that calculates a speed ratio between the input shaft and the output shaft based on the signal input to the input unit.
- the gear shift control unit sets a predetermined time that is larger than the standard time required for the vehicle to rush into the earth and sand after the speed stage is lowered to the first speed during excavation work.
- the solenoid control section keeps the speed stage at the first speed for a specified time regardless of the calculated speed ratio.
- an output unit for outputting a control signal to.
- the shift control device described above includes four tires, a vehicle body that is supported by the tires and bendable, a front frame and a rear frame that constitute the vehicle body, and a cab that is provided on the front side of the rear frame.
- An engine chamber provided on the rear side of the rear frame, an arm provided to be rotatable in the vertical direction with respect to the front frame, and a packet provided to be rotatable at the tip of the arm. It is preferably applied to an industrial vehicle.
- the speed stage when a downshift is commanded by the operation member, the speed stage is controlled to the first speed for a predetermined time. A sufficient driving force can be obtained at the time of work without shifting up as desired.
- FIG. 1 is a side view of a wheel loader according to an embodiment of the present invention.
- FIG. 2 is a diagram showing a schematic configuration of a shift control apparatus according to an embodiment of the present invention.
- FIG. 3 is a diagram showing the relationship between vehicle speed and driving force for each speed stage.
- FIG. 4 is a perspective view of the main part showing the configuration of the cab.
- FIG. 5 is a flowchart showing an example of a shift control process in the controller of FIG.
- FIG. 6 is a diagram showing the relationship between torque converter speed ratio and torque converter efficiency.
- FIG. 7 is a diagram showing an example of the operation of the shift control device according to the present embodiment.
- FIG. 8 is a diagram for explaining the operation during excavation work.
- FIG. 1 is a side view of a wheel loader that is an example of an industrial vehicle to which the shift control device according to the present embodiment is applied.
- the wheel loader 100 includes a front vehicle body 110 having an arm 111, a knot 112, a tire 113, and the like, and a rear vehicle body 120 having an operator cab 121, an engine compartment 122, tires 123, and the like.
- the arm 111 is turned up and down (up and down) by driving the arm cylinder 114, and the packet 112 is turned up and down (dumped or clouded) by driving the bucket cylinder 115.
- the front vehicle body 110 and the rear vehicle body 120 are rotatably connected to each other by a center pin 101, and the front vehicle body 110 is refracted left and right with respect to the rear vehicle body 120 by expansion and contraction of a steering cylinder (not shown).
- FIG. 2 is a diagram showing a schematic configuration of the shift control apparatus according to the present embodiment.
- the output shaft of engine 1 is connected to the input shaft of torque converter 2 (hereinafter referred to as torque converter), and the output shaft of torque converter 2 is connected to transmission 3.
- the torque converter 2 is a fluid clutch composed of a known impeller, turbine, and stator, and the rotation of the engine 1 is transmitted to the transmission 3 via the torque converter 2.
- Transmission 3 has a hydraulic clutch capable of shifting from 1st to 4th speed, and rotation of the output shaft of torque converter 2 is shifted by transmission 3. The rotation after the shift is transmitted to the tires 113 and 123 via the propeller shaft 4 and the axle 5, and the vehicle travels.
- the torque converter 2 has a function of increasing the output torque with respect to the input torque, that is, a function of setting the torque ratio to 1 or more.
- the torque ratio decreases with an increase in the torque converter speed ratio e, which is the ratio of the rotational speeds of the torque converter 2 input shaft and output shaft.
- the torque converter speed ratio e is the ratio of the rotational speeds of the torque converter 2 input shaft and output shaft.
- the driving force is large when the vehicle speed is low (low speed and high torque), and the driving force is high when the vehicle speed is high. Smaller (high speed, low torque). Also, the smaller the speed stage, the greater the driving force that can be obtained.
- the transmission 3 is an automatic transmission having solenoid valves (first-speed solenoid valve to fourth-speed solenoid valve) corresponding to each speed stage.
- solenoid valves are driven by a control signal output from the controller 10 to the solenoid control unit 11. That is, when a control signal is output from the controller 10, the solenoid control unit 11 outputs a control signal to the solenoid valve according to the control signal, and drives the solenoid valve. As a result, the speed stage is automatically changed between 1st and 4th.
- torque converter speed ratio reference control that shifts when the torque converter speed ratio e reaches a predetermined value
- speed reference control that shifts when the vehicle speed reaches a predetermined value.
- the speed stage is controlled by torque converter speed ratio control as will be described later. According to torque control speed ratio control, even if the vehicle speed is low, the shift is up if the load is small, so the timing of the shift up is earlier, which is superior in terms of fuel efficiency and noise compared to speed ratio reference control.
- the torque converter speed ratio control may shift up to the second speed against the intention of the operator trying to start work in the first speed state. For example, even if you set the vehicle in the 1st speed state and try to rush into the piled earth and sand etc., the load is small before entering the earth and sand, so it will immediately shift up to the 2nd speed and thrust into the earth and sand in the 1st speed state. In some cases, a large driving force cannot be obtained during work. Therefore, in the present embodiment, the shift control device is configured as follows.
- the controller 10 includes an operation amount detector 12 that detects the operation amount of the accelerator pedal 31, a rotation speed detector 14 that detects the rotation speed Ni of the input shaft of the torque converter 2, and an output shaft of the torque converter 2.
- a shift switch 8 for instructing the maximum speed stage between the 1st to 4th speeds and a forward / reverse switching switch 9 for instructing forward / reverse travel of the vehicle are connected.
- FIG. 4 (a) is a perspective view of the main part showing the configuration inside cab 121.
- a seat 32, a steering wheel 33, an accelerator pedal 31, a brake pedal 34, a shift lever 35, operating levers 36, 37, and the like are provided in the cab 121.
- the speed change lever 35 is an operation member for selecting the first speed to the fourth speed
- the shift switch 8 (FIG. 2) is operated by the speed change lever 35.
- the operation levers 36 and 37 are operation members for driving the arm cylinder and the bucket cylinder, respectively, and the cylinders 114 and 115 are driven according to the lever operation amount.
- the operation levers 36 and 37 are arranged in parallel at the front of the console 38 on the right side of the seating seat, and the operator operates the steering wheel 33 with the left hand and both with the right hand.
- the operating levers 36 and 37 can be operated simultaneously.
- a push-type shift down switch 7 (FIG. 2) is provided in front of the operation levers 36 and 37, and the operator can operate the shift down switch 7 while operating the operation levers 36 and 37.
- FIG. 5 is a flowchart showing an example of the shift control process in the controller 10.
- the controller 10 includes an input unit 10a that inputs various signals, an output unit 10b that outputs various control signals, a storage unit 10c such as a memory, and an arithmetic unit 10d such as a CPU.
- step S1 it is determined whether or not the transmission 3 is switched to the second speed, that is, whether or not the second speed command is output from the controller 10 to the solenoid control unit 11. If step S1 is positive, the process proceeds to step S2, and if negative, the process proceeds to step S5. In step S2, it is determined whether or not the shift down switch 7 has been operated. If it is determined that the shift switch 7 is operated (ON), the process proceeds to step S3, and if it is determined not to be operated (OFF), the process proceeds to step S5.
- step S3 a first speed command is output from the output unit 10b to the solenoid control unit 11, and the speed stage is set. Switch to 1st gear. At this time, the timer is started and the time t from when the 1st speed command is output is counted.
- step S4 it is determined whether or not the time t has exceeded a predetermined time ta previously set in the storage unit 10c. If step S4 is negative, the process returns to step S3 and the same process is repeated. As a result, automatic shifting is prohibited for a predetermined time ta after the shift down switch 7 is operated, and the vehicle is fixed to the first speed state.
- the predetermined time ta is a little longer than this (for example, ! to 2 seconds), taking into account the standard time required for rushing the vehicle to the earth and sand after dropping the speed stage to 1st speed during excavation work, for example. Degree).
- step S6 it is determined whether the torque converter speed ratio e is equal to or greater than a predetermined value eu.
- a predetermined value eu is an upper limit value of the torque converter speed ratio e at the time of shifting, and is set to a speed ratio (for example, 0.8) that can maintain the torque converter efficiency equal to or higher than the predetermined value.
- step S6 If step S6 is affirmed, the process proceeds to step S7, and it is determined whether or not the current speed stage is the maximum speed stage set by the shift switch 8. If step S7 is affirmed, the process returns. If not, the process proceeds to step S8. In step S8, an upshift signal is output from the output unit 10b to the solenoid control unit 11. This causes transmission 3 to shift up one step.
- the predetermined values eu, ed of the speed ratio e are set to the value of the intersection Px between the characteristics of the first speed stage and the characteristics of the second speed stage in FIG. For this reason, the driving force decreases when traveling in the 1st speed, and when the driving force reaches the intersection Px, it shifts up to the 2nd speed. When driving in 2nd speed, the driving force increases, and when the driving force reaches the intersection Px, it shifts down to 1st speed. This shifts smoothly from 1st gear to 2nd gear and from 2nd gear to 1st gear, and there is little shift shock. At this time, as the engine speed decreases, the characteristics of each speed stage shift to the left, and the force / speed ratio e at which the intersection Px deviates in the direction of the arrow is substantially constant regardless of the engine speed.
- step S6 when it is determined in step S6 that the torque converter speed ratio e is less than the predetermined value eu, the process proceeds to step S9, and it is determined whether or not the torque converter speed ratio e is equal to or less than a predetermined value ed.
- Predetermined value ed Is the lower and lower limit values of the torrucocon speed ratio ratio ee.
- the torrucocon speed efficiency ratio above the specified fixed value is increased. It is set to a speed ratio (such as 00..33, for example) that can be maintained. .
- step SS99 is positively asserted
- step SS 1100 is entered, and the tolerance transmission 33 remains at 33-speed or 44-speed.
- step SS 1111 the output power unit 1100bb outputs a shift down command to the solenoid control unit 1111. .
- the tra- ranance transmission 33 has 33 speeds, powers, etc. to 22 speeds, or from 44 speeds to 33 speeds 11 Stepped down the floor. .
- the speed level of the Tolerance Transmission 33 is shown in the figure. It will change as shown in Fig. 77. .
- the negative load on the running road becomes larger and the Torurukoncon speed ratio ratio ee remains at the predetermined constant value eedd.
- the TRANCEL SMITHMITTION 33 will shift to the 33rd speed as shown in (LL ll ll)). .
- the rotational speed ratio NN SS of the output torque shaft of Totorrukkon 22 is increased and the speed ratio ee22 is large.
- the speed ratio ratio ee22 becomes eedd ⁇ ee22 and eeuu (for example, about 00..77 degrees). .
- the same is true when the torrucocon speed / ratio ratio ee decreases at a certain fixed value eedd while the speed is running at 33 speeds. Will run down to 22nd speed. .
- Step SS33 When the shift down down switch 77 is operated during the 22nd speed run, it is shown as LL22 in the figure. As a result, Torayransu Sumitomo Shishi Yoon 33 will run down to 11th gear (Step SS33). . In the 11th speed state, the ttaa is maintained for a predetermined period of time, regardless of the torrucocon speed ratio ratio ee. . After ttaa for a predetermined time, the torque ratio of the torrucocon is eeuu above the predetermined fixed value eeuu. Shift up quickly ((Step SS88)). .
- the tolrucocon speed ratio ratio ee is less than the predetermined fixed value eeuu after a predetermined time ttaa, it will not be shifted to the 22nd speed. However, it remains in the 11th speed state. .
- the torrucocon speed ratio ratio ee increases and increases at the predetermined fixed value eeuu during the 22-speed running.
- the maximum speed stage that cannot shift up beyond the set speed stage is limited. For example, when the shift switch 8 is set to the 3rd speed, even if the torque converter speed ratio e exceeds the predetermined value eu, the gear is not shifted up to the 4th speed and remains in the 3rd speed state.
- the wheel loader 100 (vehicle) is started at time T1. Since the downshift switch 7 is not operated at the time of departure, the vehicle starts at the second speed, and travels forward toward the earth and sand mountain. When the vehicle moves near the earth and sand at time T2, the operator operates shift down switch 7. In this case, if the vehicle is traveling at the third speed or higher, the shift down switch 7 is operated after switching to the second speed by operating the shift switch 8 or the like. As a result, the transmission 3 switches to the first speed for the predetermined time ta.
- the bucket 112 is plunged into a pile of earth and sand.
- T3 -T2 ⁇ Ta the packet 112 can enter in the first speed state, and a large driving force can be obtained. For this reason, earth and sand can be easily taken into a packet, and work efficiency improves.
- the shock at the time of entering the bucket can be reduced.
- the torque converter speed ratio e ⁇ eu. Therefore, even if the predetermined time Ta elapses after the packet 112 enters, the first speed state is maintained and a large driving force can be exhibited. When soil and sand is taken into the packet 112 and the vehicle is moved backward, the load acting on the vehicle is reduced. At this time, if the torque converter speed ratio e becomes eu, the vehicle automatically shifts up. As a result, the fuel consumption is improved and the noise can be reduced without traveling more than necessary. In addition, the user may work in the second speed while excavating sand that does not require a large driving force.
- the force predetermined time Ta that is shifted down to the first speed by the predetermined time Ta by the operation of the shift down switch 7 may be changeable.
- a mode switch may be provided, and Ta may be changed for a predetermined time according to the selected mode.
- the operation of the shift down switch 7 may be activated when traveling in the 3rd or 4th speed. For example, when shift down switch 7 is operated during 3rd speed, it is possible to immediately shift down to 1st speed. Every time shift down switch 7 is operated, 3rd speed ⁇ 2nd speed, 2nd speed ⁇ 1st speed The speed stage may be lowered one by one.
- the gear When the torque converter speed ratio e is equal to or less than a predetermined value ed, the gear may be shifted down to the first speed with the second gear as the limit. This makes it possible to automatically drive 1st speed when the load is heavy.
- shift down switch 7 When shift down switch 7 is operated during 1st-speed driving From that time, the first speed state may be maintained for a predetermined time Ta. It is also possible to measure Ta for a predetermined time with an analog signal circuit! /.
- a control signal is output from the controller 10 to the solenoid control unit 11 and automatic transmission is performed.
- the configuration of the force shift control unit as described above may be other than that described above. In other words, if the shift down switch 7 is operated to shift down to the Tal speed for a predetermined time regardless of the torque converter speed ratio e, the structure of the shift control unit is!
- a downshift is instructed by another operation member. May be.
- Any force / speed ratio detection unit may be used that detects the torque converter speed ratio e based on signals from the rotation speed detectors 14 and 15. Although the maximum speed stage is set by operating the shift switch 8 with the shift lever 35, the speed stage setting section is not limited to this.
- the rotational speed detector 14 detects the rotational speed Ni of the torque converter 2 input shaft and the rotational speed detector 15 detects the rotational speed Nt of the output shaft.
- the configuration of the rotational speed detector is not limited to this.
- the force applied to the shift control device of the wheel loader has been described.
- the force S can be similarly applied to the shift control device of other industrial vehicles such as a wheel shovel and a forklift. That is, as long as the features and functions of the present invention can be realized, the present invention is not limited to the shift control device of the embodiment.
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008547060A JP5061120B2 (ja) | 2006-11-30 | 2007-11-30 | 産業車両の変速制御装置 |
EP07832884.6A EP2101088B1 (en) | 2006-11-30 | 2007-11-30 | Shift control device for industrial vehicle |
CN2007800395409A CN101529130B (zh) | 2006-11-30 | 2007-11-30 | 工业车辆的变速控制装置 |
US12/516,465 US8137238B2 (en) | 2006-11-30 | 2007-11-30 | Gearshift controller for industrial vehicle |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006323029 | 2006-11-30 | ||
JP2006-323029 | 2006-11-30 |
Publications (1)
Publication Number | Publication Date |
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WO2008066169A1 true WO2008066169A1 (fr) | 2008-06-05 |
Family
ID=39467955
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/073219 WO2008066169A1 (fr) | 2006-11-30 | 2007-11-30 | Dispositif de commande de passage de vitesse pour véhicule industriel |
Country Status (6)
Country | Link |
---|---|
US (1) | US8137238B2 (ja) |
EP (1) | EP2101088B1 (ja) |
JP (1) | JP5061120B2 (ja) |
KR (1) | KR20090083425A (ja) |
CN (1) | CN101529130B (ja) |
WO (1) | WO2008066169A1 (ja) |
Cited By (1)
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JP2011122708A (ja) * | 2009-12-14 | 2011-06-23 | Hitachi Constr Mach Co Ltd | 作業車両の変速制御装置 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102330442B (zh) * | 2011-06-22 | 2013-06-12 | 山推工程机械股份有限公司 | 液力式推土机铲刀自动控制系统及自动控制方法 |
JP5840104B2 (ja) * | 2012-10-19 | 2016-01-06 | 日立建機株式会社 | 作業車両の走行制御装置 |
JP6823500B2 (ja) * | 2017-03-03 | 2021-02-03 | 株式会社小松製作所 | 作業車両および制御方法 |
CN107472079B (zh) * | 2017-08-21 | 2020-04-17 | 奇瑞新能源汽车技术有限公司 | 一种电动汽车最高车速智能控制方法和系统 |
JP6922878B2 (ja) * | 2018-11-28 | 2021-08-18 | 井関農機株式会社 | 作業車両および作業車両の変速制御方法 |
CN111236342B (zh) * | 2020-01-13 | 2022-03-29 | 南京工程学院 | 一种平地机行驶速度的控制系统及方法 |
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CA978051A (en) * | 1972-09-29 | 1975-11-18 | S.R.M. Hydromekanik Aktiebolag | Automatic remote control system for hydraulic torque converter transmissions |
JPS61129332A (ja) * | 1984-11-28 | 1986-06-17 | Honda Motor Co Ltd | エンジンで駆動される車両用補機類の制御装置 |
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JPH01114324A (ja) | 1987-10-26 | 1989-05-08 | Hitachi Ltd | 選択地絡継電装置 |
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2007
- 2007-11-30 EP EP07832884.6A patent/EP2101088B1/en active Active
- 2007-11-30 JP JP2008547060A patent/JP5061120B2/ja active Active
- 2007-11-30 CN CN2007800395409A patent/CN101529130B/zh active Active
- 2007-11-30 US US12/516,465 patent/US8137238B2/en active Active
- 2007-11-30 KR KR1020097011030A patent/KR20090083425A/ko not_active Application Discontinuation
- 2007-11-30 WO PCT/JP2007/073219 patent/WO2008066169A1/ja active Application Filing
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JPS63151315U (ja) * | 1987-03-26 | 1988-10-05 | ||
JPH01114324U (ja) * | 1988-01-29 | 1989-08-01 | ||
JPH02134454A (ja) * | 1989-09-14 | 1990-05-23 | Toyo Umpanki Co Ltd | トラクターショベルの作業時迅速変速装置 |
JPH0634029A (ja) * | 1992-07-14 | 1994-02-08 | Furukawa Co Ltd | 作業車両の自動変速制御装置 |
JP3388594B2 (ja) | 1992-07-14 | 2003-03-24 | 古河機械金属株式会社 | 作業車両の自動変速制御装置 |
JPH11257485A (ja) * | 1998-03-10 | 1999-09-21 | Denso Corp | 自動変速機の変速制御装置 |
JP2006323029A (ja) | 2005-05-17 | 2006-11-30 | Nikon Corp | カメラ |
Non-Patent Citations (1)
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See also references of EP2101088A4 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011122708A (ja) * | 2009-12-14 | 2011-06-23 | Hitachi Constr Mach Co Ltd | 作業車両の変速制御装置 |
WO2011074583A1 (ja) * | 2009-12-14 | 2011-06-23 | 日立建機株式会社 | 作業車両の変速制御装置 |
US8775034B2 (en) | 2009-12-14 | 2014-07-08 | Hitachi Construction Machinery Co., Ltd. | Shift control system for industrial vehicle |
Also Published As
Publication number | Publication date |
---|---|
CN101529130A (zh) | 2009-09-09 |
KR20090083425A (ko) | 2009-08-03 |
EP2101088A4 (en) | 2014-04-09 |
CN101529130B (zh) | 2013-02-06 |
JPWO2008066169A1 (ja) | 2010-03-11 |
US8137238B2 (en) | 2012-03-20 |
JP5061120B2 (ja) | 2012-10-31 |
US20100069199A1 (en) | 2010-03-18 |
EP2101088A1 (en) | 2009-09-16 |
EP2101088B1 (en) | 2017-10-18 |
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