CN103863324A - System and method for protecting drive shaft - Google Patents
System and method for protecting drive shaft Download PDFInfo
- Publication number
- CN103863324A CN103863324A CN201310652199.1A CN201310652199A CN103863324A CN 103863324 A CN103863324 A CN 103863324A CN 201310652199 A CN201310652199 A CN 201310652199A CN 103863324 A CN103863324 A CN 103863324A
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- hydraulic coupling
- drive shaft
- speed
- axle drive
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000009467 reduction Effects 0.000 claims abstract description 6
- 230000008878 coupling Effects 0.000 claims description 59
- 238000010168 coupling process Methods 0.000 claims description 59
- 238000005859 coupling reaction Methods 0.000 claims description 59
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 230000003042 antagnostic effect Effects 0.000 description 2
- 238000005183 dynamical system Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/10—Change speed gearings
- B60W2510/1005—Transmission ratio engaged
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2520/00—Input parameters relating to overall vehicle dynamics
- B60W2520/10—Longitudinal speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/06—Combustion engines, Gas turbines
- B60W2710/0666—Engine torque
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
Disclosed is a system and method for protecting a drive shaft, and the system includes a vehicle state detector. The vehicle state detector is configured to detect currently selected shift speed, a hydraulic pressure signal detected by a hydraulic pressure detector mounted to a hydraulic pressure power steering assembly, vehicle speed and engine RPM vehicle information. In addition, a traction controller is configured to analyze vehicle information transmitted by the vehicle state detector, and to request torque reduction when a predetermined condition is satisfied. An engine controller is configured to reduce the torque output of an engine based on the torque reduction requested by the traction controller so that the torque applied to the drive shaft is smaller than the limit torque.
Description
The cross reference of related application
The application requires preceence and the rights and interests of the Korean Patent Application No. No.10-2012-0145731 proposing in Department of Intellectual Property of Korea S on December 13rd, 2012, and by reference its full content is included in herein.
Technical field
The present invention relates to a kind of system and method for protecting axle drive shaft.More specifically, the present invention relates to a kind of system and method for protecting axle drive shaft, it is during reverse speed and full turning and in the time that the burn-out condition of change-speed box is satisfied, reduce the output torque of driving engine, to prevent that ultimate torque is applied to axle drive shaft.
Background technology
Normally, in the time producing the high torque of output engine when braking force, for example, produce the second moment (secondary moment) of driving torque due to the angle (, the angle between axle drive shaft and lever surface) of braking force and axle drive shaft.Due to the second moment of driving torque, antagonistic force is applied to sprung parts, and such antagonistic force increases and turn to by obeying effect, and therefore increases the angle of axle drive shaft.
Particularly, when brake pedal and accelerator pedal engage simultaneously with complete turn and reverse speed during when producing braking force and exporting compared with high-engine, ultimate torque is applied to axle drive shaft and generation noise.Extreme in the situation that, chassis may be out of shape, and axle drive shaft and joint may damage.In this article, ultimate torque means the moment of torsion that can make axle drive shaft plastically be out of shape.
For example, the usual angle of axle drive shaft is set to about 46.5 °, and still, due to the geometric configuration of suspension, the angle of axle drive shaft is greater than about 46.5 ° conventionally.Therefore, axle drive shaft may damage during change-speed box is flame-out.And, the size that can increase joint with maintain axle drive shaft compared with the intensity under wide-angle, and can block piece be installed near steering swivel or underarm, to prevent the change of geometric configuration of suspension.But such method has increased cost and weight.
In addition,, in order to detect steering angle during full turning, may need steering angle sensor.But steering angle sensor only can be mounted to electric motor driven power steering gear (MDPS), but not there is HPS(hydraulic power steering apparatus) vehicle.
The above-mentioned information that is disclosed in this part is only intended to deepen the understanding to background of invention, and therefore not to be formed in this country be prior art known in those skilled in the art to its information that can comprise.
Summary of the invention
The invention provides a kind of system and method for protecting axle drive shaft, have in the time that current driving condition may damage axle drive shaft, protect the advantage of axle drive shaft by reducing the output torque of driving engine.
Can comprise vehicle-state detector according to the system of the protection axle drive shaft of exemplary of the present invention, traction controller and engine controller, wherein, described vehicle-state detector detects the information of vehicles of hydraulic coupling signal, car speed and the engine RPM (number of revolution per minute) that comprise the switching speed of current selection, detected by the hydraulic coupling detector that is mounted to hydraulic coupling power steering assembly; Described traction controller analysis is from the information of vehicles of described vehicle-state detector transmission, and the reduction of requested torque in the time meeting predetermined condition; Described engine controller, based on reduced the output torque of driving engine by the moment of torsion of described traction controller request, is less than ultimate torque so that be applied to the moment of torsion of described axle drive shaft.
Be reverse speed in the speed of current selection, the hydraulic coupling signal of hydraulic coupling detector, higher than predetermined pressure and while meeting burn-out condition, can meet predetermined condition.In the time that car speed is less than predetermined speed and engine RPM and is greater than predetermined RPM, can meet burn-out condition.
Can comprise according to the method for the protection of axle drive shaft of exemplary of the present invention: whether the switching speed of determining current selection is reverse speed; In the time that the switching speed of current selection is reverse speed, determine whether the hydraulic coupling that is applied to hydraulic coupling power steering assembly is greater than predetermined hydraulic coupling; When the hydraulic coupling that is in application to hydraulic coupling power steering assembly is greater than predetermined hydraulic coupling, determine whether to meet burn-out condition; And in the time meeting burn-out condition, the moment of torsion that is applied to axle drive shaft by reducing the output torque control of driving engine is less than ultimate torque.In the time that car speed is less than predetermined speed and engine RPM and is greater than predetermined RPM, can meet burn-out condition.
According to exemplary of the present invention, can not change the layout of vehicle and characteristic by reducing the output torque of driving engine and improve the durability of axle drive shaft.Therefore, can cutting down cost.In addition,, because the Static and dynamic characteristic of vehicle is not changed and the structure of dynamical system is not changed, therefore the accelerating performance of vehicle and turbine characteristic can be maintained.Therefore, can improve merchantability and the stability of vehicle.Because conventional hydraulic coupling sensor can be applied to the present invention, therefore can protect axle drive shaft and not need steering angle sensor.
Brief description of the drawings
Fig. 1 is according to the example block diagram of the system of the protection axle drive shaft of exemplary of the present invention;
Fig. 2 is according to the exemplary process diagram of the method for the protection of axle drive shaft of exemplary of the present invention; And
Fig. 3 shows hydraulic coupling and is applied to according to the example chart of the output of the hydraulic coupling sensor of the system of the protection axle drive shaft of exemplary of the present invention.
Reference numeral
11: switching speed detector 12: hydraulic coupling detector
13: vehicle speed detection device 14:RPM detector
20: traction controller 30: engine controller.
Detailed description of the invention
Should be appreciated that term used herein " vehicle " or " vehicle " or other similar terms generally comprise power actuated vehicle, as comprise SUV (sport utility vehicle) (SUV), city motor bus, truck, various commercial vehicles motor passenger vehicle, comprise ship, the aircraft etc. of multiple canoe and ships, and comprise motor vehicle driven by mixed power, elec. vehicle, burning vehicle, plug-in hybrid electric vehicle, hydrogen-powered vehicle and other alternative fuel vehicles fuel of the nonoil energy (for example derived from).
In addition, it should be understood that term " controller " refers to comprise the hardware device of memory device and treater.Config memory is with storage module, and special configuration treater is to carry out described module, to carry out the one or more processes that are described further herein.
In addition, control logic of the present invention can be embodied in the non-provisional computer readable medium on computer-readable medium, comprises the executable program instructions of being carried out by treater, controller etc.The example of computer-readable medium includes but not limited to ROM, RAM, CD (CD)-ROM, tape, floppy disk, flash memory, smart card and optical data storage.Computer readable recording medium storing program for performing also can be distributed in the computer system of net connection, so that computer readable medium distributed earth is stored and carries out, for example, by telematic services server or controller local area network (CAN).
Term used herein only, in order to describe the object of particular, is not intended to limit the present invention.Singulative " one (a) ", " one (an) " and " being somebody's turn to do (the) " are also intended to comprise plural form as used herein, unless referred else clearly in context.Will also be understood that, when using in this manual term " to comprise " and/or when " comprising ", refer in particular to the feature, entirety, step, operation, element and/or the assembly that there are statement, exist or additional one or more other features, entirety, step, operation, element, assembly and/or its combination but do not get rid of.Term "and/or" comprises any and all combinations of the one or more items of listing that are associated as used herein.”
For example, unless specify particularly or obviously find out from context, as used herein term " approximately " is interpreted as in the scope of normal tolerance in the art, in 2 standard deviations of aviation value." approximately " can be interpreted as specified value 10%, 9%, 8%, 7%, 6%, 5%, 4%, 3%, 2%, 1%, 0.5%, 0.1%, 0.05% or 0.01% in.Unless referred else clearly in context, otherwise all passing through term " approximately ", revises all numerical value provided in this article.
Below, with reference to appended accompanying drawing, will be specifically described exemplary of the present invention.
One of skill in the art will appreciate that and can carry out to described embodiment the amendment of various different modes, all such modifications will not depart from the spirit or scope of the present invention.To be omitted for the description of explaining the present invention unnecessary parts, and same in this manual composed component is represented by same Reference numeral.
Fig. 1 is according to the example block diagram of the system of the protection axle drive shaft of exemplary of the present invention.As shown in Figure 1, can comprise vehicle-state detector 10, traction controller 20 and engine controller 30 according to the system of the protection axle drive shaft of exemplary of the present invention.
Vehicle-state detector 10 can be configured to detect for the switching speed information of the position of gear-shift lever, steering angle information, car speed information and the engine RPM information from bearing circle, and can be configured to communication to traction controller 20.In other words, vehicle-state detector 10 can comprise switching speed detector 11, hydraulic coupling detector 12, vehicle speed detection device 13 and RPM detector 14, wherein, switching speed detector 11 is configured to detect the switching speed of selecting by gear level, hydraulic coupling detector 12 is mounted to hydraulic coupling power steering assembly, and be configured to detect the hydraulic coupling in power steering assembly, vehicle speed detection device 13 is configured to detect from the rotative speed of output shaft of change-speed box or the car speed of the rotative speed of wheel, RPM detector 14 can comprise crank angle sensor or cam-angle sensor, and can be configured to detect the rotative speed of driving engine.
Steering angle sensor can omit from have the vehicle of hydraulic coupling type power steering hardware (HPS).For example, but hydraulic coupling detector 12 can be configured to detect the hydraulic coupling (, the operation hydraulic coupling of hydraulic coupling power steering assembly) in hydraulic coupling power steering assembly.
Fig. 3 shows hydraulic coupling and is applied to according to the example chart of the output of the hydraulic coupling sensor of the system of the protection axle drive shaft of exemplary of the present invention.Can be configured to stop as the hydraulic coupling detector 12 of hydraulic coupling sensor (booming) or the tail-off of thundering that dally in the time that bearing circle is rotated under idling conditions.
Especially, hydraulic coupling can be used as the auxiliary power source in the time of steering wheel rotation, and hydraulic coupling can produce by driving engine.But under idling conditions, engine RPM is lowered, and may thunder or tail-off.Thunder or tail-off in order to stop, having in the vehicle of hydraulic coupling type power steering hardware, engine RPM can compensate by detecting hydraulic coupling.
With reference to Fig. 3, in the time for example, arriving predetermined value A from the signal (, output voltage) of hydraulic coupling sensor output, output can be understood as and is equal to or greater than predetermined pressure (for example, B; Hold-off pressure (relief pressure)) hydraulic coupling.In addition, output can be understood as steering locking angle degree, or is the steering angle of full angle of turn.
Traction controller 20 can be configured to analyze the information of transmitting from vehicle-state detector 10, and reduces moment of torsion from engine controller 30 requests in the time meeting predetermined condition.Be reverse speed at the switching speed of current selection, when the hydraulic coupling signal of hydraulic coupling detector 12 is greater than predetermined pressure and meets burn-out condition, can meet predetermined condition.
Therefore, can reduce via reducing moment of torsion the moment of torsion that is applied to axle drive shaft by engine controller 30, and can stably protect axle drive shaft.
But be approximately the flame-out of change-speed box may occur for 1 o'clock at the rotative speed that the moment of torsion of driving engine is input to torque converter turbo-machine.The burn-out condition of change-speed box can represent by the function that may produce flame-out engine variables and change-speed box variable.For example, the burn-out condition of change-speed box can be defined as the function of the variablees such as the ratio of the speed of ratio, driving engine and the change-speed box of the moment of torsion of RPM, driving engine and the change-speed box of transmission of power ratio, the torque converter of such as engine RPM, car speed, torque converter.(be for example less than predetermined speed at car speed, about 2km/h of the joint by brake pedal) and engine RPM be greater than predetermined RPM(by about 2000RPM of the joint of accelerator pedal) time, can meet the burn-out condition of change-speed box.
The moment of torsion that engine controller 30 can be configured to the traction controller 20 based on connecting by network reduces the output torque of demand with predetermined amount reduction driving engine, and can be configured to stop ultimate torque to be applied to axle drive shaft.In addition, the reduction of the output torque of driving engine can or reduce fuel injection amount and carry out by retarded spark timing.
As in this article above as described in, traction controller 20 and engine controller 30 can be set individually, but traction controller 20 and engine controller 30 are not limited to such structure.In other words, traction controller 20 and engine controller 30 can be combined into a controller.
Below, will describe in detail according to the method for the protection of axle drive shaft of exemplary of the present invention.
In the time that the vehicle of application exemplary of the present invention moves at step S101 place, switching speed detector 11 can be configured to detect at step S102 place the switching speed of being selected by gear level.In addition, traction controller 20 can be configured to determine at step S103 place whether the switching speed of current selection is reverse speed.
When at step S103 place, when the switching speed of current selection is not reverse speed, traction controller 20 can be configured to ask engine controller 30 at step S111 place's normal running driving engine.Therefore, engine controller 30 can be configured to operate driving engine with output torque at step S111 place according to current drive condition.In this manual, the normal control of driving engine is not used exemplary of the present invention, and operates driving engine with output torque according to current drive condition.
When at step S103 place, when the switching speed of current selection is reverse speed, hydraulic coupling detector 12 can be configured to the hydraulic coupling in hydraulic coupling power steering assembly is detected at step S104 place, and traction controller 20 can be configured to use at step S105 place the hydraulic coupling detecting to determine whether current steering angle is the full angle of turn of bearing circle.The full angle of turn of bearing circle can be the current hydraulic coupling that is greater than the detection of predetermined hydraulic coupling, and can set according to necessary performance.
In the time that the current hydraulic coupling detecting at step S105 place is less than predetermined hydraulic coupling, traction controller 20 can be configured to ask engine controller 30 normally to operate driving engine, and engine controller 20 can be configured to operate driving engine with output torque at step S111 place according to current drive condition.
But, in the time that the hydraulic coupling detecting at step S105 place is greater than predetermined hydraulic coupling, the position and the whether operated car status information of brake pedal that comprise car speed, engine RPM, accelerator pedal can be detected at step S106 place.In addition the burn-out condition that, traction controller 20 can be configured to analyze car status information at step S107 place and determine whether to meet change-speed box.
(be for example less than predetermined speed at car speed, about 2km/h of the joint by brake pedal) and engine RPM be for example greater than predetermined RPM(, about 2000RPM of the joint by accelerator pedal) time, can meet the burn-out condition of change-speed box.But, can be according to necessary performance setting car speed (, about 2km/h) and engine RPM (, about 2000RPM).
When at step S107 place, when the burn-out condition of change-speed box is not satisfied, traction controller 20 can be configured to ask engine controller 30 normally to operate driving engine, and engine controller 20 can be configured to operate driving engine with output torque at step S111 place according to current drive condition.
When at step S107 place, when the burn-out condition of change-speed box is satisfied, traction controller 20 can be configured to determine at step S108 place that ultimate torque is applied to axle drive shaft.Therefore, traction controller 20 can be configured to reduce output torque at step S109 place request engine controller 30, to stop ultimate torque to be applied to axle drive shaft.
Engine controller 30 can be configured at step S110 place to reduce request based on moment of torsion and reduce the output torque of driving engine with predetermined amount, and will be applied to drive shaft torque and be operating as and be less than ultimate torque.Therefore, can prevent the damage of axle drive shaft.
According to exemplary of the present invention, can not change the layout of vehicle and characteristic by reducing the output torque of driving engine and improve the durability of axle drive shaft.Therefore, can cutting down cost.In addition,, because the Static and dynamic characteristic of vehicle is not changed and the structure of dynamical system is not changed, therefore the accelerating performance of vehicle and turbine characteristic can be maintained.Therefore, can improve merchantability and the stability of vehicle.Because conventional hydraulic coupling sensor can be applied to the present invention, therefore can protect axle drive shaft and not need steering angle sensor.
Although the present invention is described in conjunction with the embodiment that is considered at present exemplary, should be appreciated that the present invention is not limited to disclosed embodiment.On the contrary, it is intended to contain various amendments and equivalent arrangements included in the spirit and scope of the appended claims.
Claims (5)
1. a system of protecting axle drive shaft, comprising:
Vehicle-state detector, described vehicle-state detector configurations one-tenth detects the information of vehicles of the hydraulic coupling signal, car speed and the erpm that comprise the switching speed of current selection, detected by the hydraulic coupling detector that is mounted to hydraulic coupling power steering assembly;
Traction controller, described traction controller is configured to analyze the information of vehicles from the transmission of described vehicle-state detector, and the reduction of requested torque in the time meeting predetermined condition; And
Engine controller, described engine controller is configured to, based on reduced the output torque of driving engine by the moment of torsion of described traction controller request, be less than ultimate torque so that be applied to the moment of torsion of described axle drive shaft.
2. the system of protection axle drive shaft according to claim 1; be wherein reverse speed at the switching speed of current selection; when the hydraulic coupling signal of described hydraulic coupling detector is greater than predetermined pressure and meets burn-out condition, meet described predetermined condition.
3. the system of protection axle drive shaft according to claim 2, wherein, in the time that car speed is less than predetermined speed and erpm and is greater than predetermined number of revolution per minute, meets burn-out condition.
4. for the protection of a method for axle drive shaft, comprising:
Whether the switching speed of determining current selection by traction controller is reverse speed;
In the time that the switching speed of current selection is reverse speed, determine by described traction controller whether the hydraulic coupling that is applied to hydraulic coupling power steering assembly is greater than predetermined hydraulic coupling;
When the hydraulic coupling that is in application to hydraulic coupling power steering assembly is greater than predetermined hydraulic coupling, determine whether to meet burn-out condition by described traction controller; And
In the time meeting burn-out condition, the moment of torsion that is applied to axle drive shaft by engine controller by reducing the output torque control of driving engine is less than ultimate torque.
5. the method for the protection of axle drive shaft according to claim 4, wherein, in the time that car speed is less than predetermined speed and erpm and is greater than predetermined number of revolution per minute, meets burn-out condition.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2012-0145731 | 2012-12-13 | ||
| KR1020120145731A KR20140080689A (en) | 2012-12-13 | 2012-12-13 | System and method for protecting drive shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103863324A true CN103863324A (en) | 2014-06-18 |
Family
ID=50902495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310652199.1A Pending CN103863324A (en) | 2012-12-13 | 2013-12-05 | System and method for protecting drive shaft |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20140080689A (en) |
| CN (1) | CN103863324A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108639046A (en) * | 2017-03-17 | 2018-10-12 | 马自达汽车株式会社 | The control device of vehicle |
-
2012
- 2012-12-13 KR KR1020120145731A patent/KR20140080689A/en not_active Application Discontinuation
-
2013
- 2013-12-05 CN CN201310652199.1A patent/CN103863324A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108639046A (en) * | 2017-03-17 | 2018-10-12 | 马自达汽车株式会社 | The control device of vehicle |
| CN108639046B (en) * | 2017-03-17 | 2021-06-22 | 马自达汽车株式会社 | Vehicle control device |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20140080689A (en) | 2014-07-01 |
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Application publication date: 20140618 |