EP2657492B1 - Système de commande de faible ralenti d'équipement de construction et son procédé de commande automatique - Google Patents
Système de commande de faible ralenti d'équipement de construction et son procédé de commande automatique Download PDFInfo
- Publication number
- EP2657492B1 EP2657492B1 EP11850744.1A EP11850744A EP2657492B1 EP 2657492 B1 EP2657492 B1 EP 2657492B1 EP 11850744 A EP11850744 A EP 11850744A EP 2657492 B1 EP2657492 B1 EP 2657492B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sensor
- angle
- steering
- sensing means
- accelerator pedal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000010276 construction Methods 0.000 title claims description 25
- 238000000034 method Methods 0.000 title claims description 12
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/021—Introducing corrections for particular conditions exterior to the engine
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- 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
- E02F9/2062—Control of propulsion units
- E02F9/2066—Control of propulsion units of the type combustion engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/08—Introducing corrections for particular operating conditions for idling
- F02D41/083—Introducing corrections for particular operating conditions for idling taking into account engine load variation, e.g. air-conditionning
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D45/00—Electrical control not provided for in groups F02D41/00 - F02D43/00
Definitions
- the present invention relates to a low idle control system of construction equipment and an automatic control method thereof, and more particularly, to a low idle control system of construction equipment and an automatic control method thereof, capable of implementing an effective auto idle function by accurately recognizing a state of using equipment.
- the excavators perform various operations such as operations of excavating, leveling the ground, compacting the ground, lifting heavy objects, and the like.
- the excavator has a working device including a boom, an arm, and a bucket, and work of the excavator is performed by controlling the working device including the boom, the arm, and the bucket by operating each corresponding actuator (or a hydraulic cylinder).
- the wheel loader refers to equipment that is used to perform civil work at construction sites, and is widely used to perform operations of conveying powder materials such as soil, sand, or the like, loading or unloading conveyed soil and sand onto or from freight vehicles, leveling ground for road, removing snow, towing vehicles, and the like.
- a technology of converting a state of an engine into an idle state so as to improve fuel efficiency is generally applied in a case in which pressure of working oil in an accelerator pedal, a steering part, and a front unit is not varied for a predetermined time.
- This function is typically referred to as an 'auto idle function'.
- a no-load operation for example, a bucket dump, a boom floating that the boom is lowered by its own weight, or the like, may occur during performing work.
- a variation in pressure of the front unit is very small when the no-load operations are performed, it may be recognized that the equipment does not work. Accordingly, a case occurs in which the equipment enters the aforementioned auto idle state, or the auto idle state, which is already in progress, is continued.
- the aforementioned no-load operation is frequently converted directly into a load operation, and in this case, because the auto idle state needs to be suddenly released, there is a problem in that the engine is stopped (engine stall), or an increase in output of the engine is delayed.
- KR 2010 0075339 A relates to a device for controlling the rpm of an engine comprising a sensor unit, an engine control unit and an equipment control unit.
- US 5 627 467 A relates to a device for sensing the displacement of working members in industrial equipment including cheap analog inductive sensors capable of maintaining the sensing characteristics irrespective of moisture and leaking water, thereby precisely sensing the displacements of the working members.
- the present invention has been made in an effort to solve the aforementioned problem, and an object of the present invention is to provide a low idle control system of construction equipment and an automatic control method thereof, capable of implementing an effective auto idle function by more accurately recognizing a state of using equipment.
- a low idle control system of construction equipment including: a front angle change sensing means which detects an operation of at least a part of a front unit through changes in an angle; a controller which is electrically connected to the front angle change sensing means, determines whether to enter an auto idle state by receiving an output signal that is transmitted from the front angle change sensing means, and generates an rpm control signal corresponding to the result of the determination on whether to enter the auto idle state; and an ECU which controls the rpm of an engine by receiving the rpm control signal outputted from the controller.
- the front angle change sensing means may include at least one of a boom angle sensor which is installed at an upper turning unit and detects a change in an angle of a boom, an arm angle sensor which is installed at the boom and detects a change in an angle of an arm, and a bucket angle sensor which is installed at the arm and detects a change in an angle of a bucket.
- the low idle control system of construction equipment may further include: an accelerator pedal sensor which detects operating pressure of an accelerator pedal or a change in angle of the accelerator pedal; and a steering sensor which detects a change in angle or operating pressure of a steering wheel or a steering joystick, in which the controller may additionally consider signals outputted from the accelerator pedal sensor and the steering sensor, at the time of determining whether to enter the auto idle state.
- the low idle control system of construction equipment may further include: a working oil pressure sensor which detects pilot pressure that is generated corresponding to pressure of working oil supplied to drive a working device of the front unit, or an operation of an operating lever for operating the front unit, in which the controller may additionally consider a signal outputted from the working oil pressure sensor, at the time of determining whether to enter the auto idle state.
- the present disclosure provides an automatic control method of a low idle control system of construction equipment, including: monitoring output signals that are received from a steering sensor, an accelerator pedal sensor, and a front angle change sensing means (S20); determining whether a preset output signal corresponding to a steering pressure reference value or less from the steering sensor, an off signal from the accelerator pedal sensor, and an off signal from the front angle change sensing means are continued for a predetermined time or more (S22); entering an auto idle mode by recognizing that the equipment does not work when it is determined that the condition is continued for a predetermined time or more according to the determination result of step S22 (S24); and outputting normal rpm by inputting a preset control signal into the ECU, which controls the engine, when it is determined that the condition is not satisfied according to the determination result of step S22 (S22a).
- the present disclosure further provides the following specific exemplary aspects.
- the automatic control method of a low idle control system of construction equipment may further include: determining, after step S24, whether at least one of a preset output signal corresponding to a steering pressure reference value or more from the steering sensor, an operating signal from the accelerator pedal sensor, and an operating signal from the front angle change sensing means is received (S26), in which when it is determined that at least a signal of the signals is received according to the determination result, a preset control signal is inputted into the ECU, which controls the engine, and normal rpm is outputted (S22a).
- the present invention additionally provides an angle change sensing means, which may detect an operation of a front unit through changes of the angle of the front unit, in addition to the existing partial input elements (a steering sensor and an accelerator pedal sensor) that are used to determine a state of using equipment, and an ECU may be controlled by a controller using signals of the aforementioned components, thereby implementing an effective auto idle function by more accurately recognizing a state of using the equipment.
- an angle change sensing means may detect an operation of a front unit through changes of the angle of the front unit, in addition to the existing partial input elements (a steering sensor and an accelerator pedal sensor) that are used to determine a state of using equipment, and an ECU may be controlled by a controller using signals of the aforementioned components, thereby implementing an effective auto idle function by more accurately recognizing a state of using the equipment.
- FIGS. 1 and 2 an exemplary aspect of an automatic control method of a low idle control system of construction equipment according to the present disclosure will be described with reference to FIGS. 1 and 2 .
- a low idle control system of construction equipment may include a front angle change sensing means 10, a controller 3, and an ECU 4.
- the front angle change sensing means 10 detects an operation of at least a part of a front unit (for example, a working device) through changes in an angle.
- the controller 3 is electrically connected to the front angle change sensing means 10.
- the controller 3 determines whether to enter an auto idle state by receiving an output signal that is transmitted from the front angle change sensing means 10, and generates an rpm control signal corresponding to the result of the determination on whether to enter the auto idle state.
- the ECU 4 controls the rpm of an engine 5 by receiving the rpm control signal outputted from the controller 3.
- a low idle control system of construction equipment may further include a steering sensor 1, and an accelerator pedal sensor 2.
- the steering sensor 1 detects an operation of a steering wheel or a steering joystick through changes in pressure or an angle
- the accelerator pedal sensor 2 detects an operation of an accelerator pedal through changes in pressure or an angle.
- a working oil pressure sensor 9 which measures pilot pressure that is generated corresponding to pressure of working oil supplied to drive a drive unit of the existing steering device and the existing front working device, or an operation of an operating lever, may be used.
- the controller 3 first confirms whether to enter an auto idle mode on the basis of an inputted signal from the working oil pressure sensor 9, and then may determine whether to enter/release the auto idle mode according to the detection result of the front angle change sensing means 10.
- the problem of the related art may be solved only by additionally installing the front angle change sensing means 10, which may be comparatively easily installed in the front working device, in the existing equipment, and correcting a control method as described above.
- the controller 3 is electrically connected to the steering sensor 1 and the accelerator pedal sensor 2, or the working oil pressure sensor 9, respectively. Accordingly, the controller 3 may additionally consider signals outputted from the accelerator pedal sensor 2 and the steering sensor 1, or a signal outputted from the working oil pressure sensor 9, at the time of determining whether to enter the auto idle mode.
- the ECU 4 may control the rpm of the engine 5 by receiving the rpm control signal corresponding to output signals from the steering sensor 1, the accelerator pedal sensor 2, and the front angle change sensing means 10 in the controller 3.
- the front angle change sensing means 10 may be configured by at least one of a boom angle sensor 11 which is installed at an upper turning unit and detects a change in an angle of a boom, an arm angle sensor 12 which is installed at the boom and detects a change in an angle of an arm, and a bucket angle sensor 13 which is installed at the arm and detects a change in an angle of a bucket.
- the front angle change sensing means 10 may implement a function of entering/releasing the auto idle state corresponding to most operations except for traveling/turning operations.
- all of the steering sensor 1, the accelerator pedal sensor 2, the working oil pressure sensor 9, and the front angle change sensing means 10, which are described above, may be installed.
- the controller 3 monitors output signals that are received from the steering sensor 1, the accelerator pedal sensor 2, and the front angle change sensing means 10 (S20).
- step S24 when it is determined that the aforementioned condition is continued for a predetermined time (for example, 5 seconds) or more according to the determination result of step S22, it is recognized that the equipment does not work, and then the equipment enters the auto idle mode (S24).
- a predetermined time for example, 5 seconds
- step S22 when it is determined that the aforementioned condition is not satisfied according to the determination result of step S22, a preset control signal is inputted into the ECU 4, which controls the engine 5, and normal rpm is outputted (S22a).
- step S24 it is determined whether at least one of a preset output signal corresponding to a steering pressure reference value or more from the steering sensor 1, an operating signal from the accelerator pedal sensor 2, and an operating signal from the front angle change sensing means 10 is received (S26).
- step S26 When it is determined that at least a signal of the aforementioned signals is received according to the determination result of step S26, a preset control signal is inputted into the ECU 4, which controls the engine 5, and normal rpm is outputted (S22a).
- the present invention additionally provides an angle change sensing means, which may detect an operation of a front unit through changes in the angle of the front unit, in addition to the existing partial input elements (a steering sensor, an accelerator pedal sensor, and a working oil pressure sensor) that are used to determine a state of using equipment, and an ECU may be controlled by a controller using signals of the aforementioned components, thereby implementing an effective auto idle function by more accurately recognizing a state of using the equipment.
- an angle change sensing means may detect an operation of a front unit through changes in the angle of the front unit, in addition to the existing partial input elements (a steering sensor, an accelerator pedal sensor, and a working oil pressure sensor) that are used to determine a state of using equipment, and an ECU may be controlled by a controller using signals of the aforementioned components, thereby implementing an effective auto idle function by more accurately recognizing a state of using the equipment.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Operation Control Of Excavators (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Claims (5)
- Système de commande de ralenti bas d'engin de chantier, comprenant :un moyen de détection de variation d'angle d'incidence (10) qui détecte un actionnement d'au moins une partie d'une unité avant, par le biais de variations d'un angle ;un dispositif de commande (3) qui est connecté électriquement au moyen de détection de variation d'angle d'incidence (10), qui détermine s'il faut passer à un état de ralenti automatique en recevant un signal de sortie qui est transmis par le moyen de détection de variation d'angle d'incidence (10), et qui produit un signal de commande de régime correspondant au résultat de la détermination de ce qu'il faut ou non passer à l'état de ralenti automatique ;une unité UCE (4) qui commande le régime d'un moteur (5) en recevant le signal de commande de régime délivré par le dispositif de commande (3) ; etun capteur de pression d'huile de travail (9) qui détecte une pression pilote qui est engendrée en correspondance avec la pression d'huile de travail fournie pour entraîner un dispositif de travail de l'unité avant, ou un actionnement de levier de manoeuvre destiné à actionner l'unité avant,dans lequel le dispositif de commande (3) prend en considération en outre un signal délivré par le capteur de pression d'huile de travail (9), au moment de déterminer s'il faut passer à l'état de ralenti automatique.
- Système de commande de ralenti bas d'engin de chantier selon la revendication 1, dans lequel le moyen de détection de variation d'angle d'incidence (10) inclut au moins un capteur parmi un capteur d'angle de flèche (11) qui est installé sur une unité rotative supérieure et qui détecte une variation d'angle d'une flèche, un capteur d'angle de bras (12) qui est installé sur la flèche et qui détecte une variation d'angle d'un bras, et un capteur d'angle de godet (13) qui est installé sur le bras et qui détecte une variation d'angle d'un godet.
- Système de commande de ralenti bas d'engin de chantier selon la revendication 1, comprenant en outre :un capteur de pédale d'accélérateur (2) qui détecte une pression d'actionnement d'une pédale d'accélérateur ou une variation d'angle de la pédale d'accélérateur ; etun capteur de direction (1) qui détecte une variation d'angle ou de pression de manoeuvre d'un volant de direction ou d'un levier de direction,dans lequel le dispositif de commande (3) prend en considération en outre des signaux délivrés par le capteur de pédale d'accélérateur (2) et le capteur de direction (1), au moment de déterminer s'il faut passer à l'état de ralenti automatique.
- Procédé de commande automatique d'un système de commande de ralenti bas d'engin de chantier, comprenant les étapes suivantes :surveiller des signaux de sortie qui sont reçus en provenance d'un capteur de direction, d'un capteur de pédale d'accélérateur, d'un moyen de détection de variation d'angle d'incidence et d'un capteur de pression d'huile de travail (S20) ;déterminer si un signal de sortie prédéfini correspondant à une valeur de référence de pression de direction, ou inférieur à celle-ci, provenant du capteur de direction, un signal d'arrêt provenant du capteur de pédale d'accélérateur, et un signal d'arrêt provenant du moyen de détection de variation d'angle d'incidence, ainsi qu'un signal délivré par le capteur de pression d'huile de travail persistent pendant une durée supérieure ou égale à une durée prédéterminée (S22) ;passer à un mode de ralenti automatique en reconnaissant que l'engin ne fonctionne pas, lorsqu'il est déterminé que la condition persiste pendant une durée supérieure ou égale à une durée prédéterminée, selon le résultat de détermination de l'étape (S22) (S24) ; etproduire un régime normal en appliquant un signal de commande prédéfini à l'unité UCE qui commande le moteur, lorsqu'il est déterminé que la condition n'est pas satisfaite, selon le résultat de détermination de l'étape (S22) (S22a),dans lequel le capteur de pression d'huile de travail détecte une pression pilote qui est engendrée en correspondance avec la pression d'huile de travail fournie pour entraîner un dispositif de travail de l'unité avant, ou un actionnement de levier de manoeuvre destiné à actionner l'unité avant.
- Procédé de commande automatique d'un système de commande de ralenti bas d'engin de chantier selon la revendication 4, comprenant les étapes suivantes :déterminer, après l'étape (S24), si au moins un signal parmi un signal de sortie prédéfini correspondant à une valeur de référence de pression de direction, ou supérieur à celle-ci, provenant du capteur de direction, un signal d'actionnement provenant du capteur de pédale d'accélérateur, et un signal d'actionnement provenant du moyen de détection de variation d'angle d'incidence (S26) est reçu,dans lequel lorsqu'il est déterminé que l'un au moins des signaux est reçu, selon le résultat de détermination, un signal de commande prédéfini est appliqué à l'unité UCE qui commande le moteur, et un régime normal est produit (S22a).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020100131189A KR101685206B1 (ko) | 2010-12-21 | 2010-12-21 | 건설장비의 로우아이들 제어 시스템 및 그 자동 제어방법 |
PCT/KR2011/009920 WO2012087020A2 (fr) | 2010-12-21 | 2011-12-21 | Système de commande de faible ralenti d'équipement de construction et son procédé de commande automatique |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2657492A2 EP2657492A2 (fr) | 2013-10-30 |
EP2657492A4 EP2657492A4 (fr) | 2017-06-28 |
EP2657492B1 true EP2657492B1 (fr) | 2019-08-14 |
Family
ID=46314627
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11850744.1A Active EP2657492B1 (fr) | 2010-12-21 | 2011-12-21 | Système de commande de faible ralenti d'équipement de construction et son procédé de commande automatique |
Country Status (5)
Country | Link |
---|---|
US (1) | US20130289834A1 (fr) |
EP (1) | EP2657492B1 (fr) |
KR (1) | KR101685206B1 (fr) |
CN (1) | CN103261643B (fr) |
WO (1) | WO2012087020A2 (fr) |
Families Citing this family (6)
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JP5562893B2 (ja) * | 2011-03-31 | 2014-07-30 | 住友建機株式会社 | ショベル |
KR20140109883A (ko) * | 2011-12-15 | 2014-09-16 | 볼보 컨스트럭션 이큅먼트 에이비 | 건설기계의 효율 양호 rpm 구간 표시 장치 |
CN103422528B (zh) * | 2013-08-24 | 2015-04-01 | 烟台兴业机械股份有限公司 | 一种地下铲运机的智能控制系统 |
JP6415839B2 (ja) * | 2014-03-31 | 2018-10-31 | 住友重機械工業株式会社 | ショベル |
CN105221276B (zh) * | 2014-10-15 | 2019-03-19 | 徐州重型机械有限公司 | 一种发动机转速的控制方法、系统及起重机 |
CN111821148B (zh) * | 2020-06-19 | 2022-09-09 | 王从和 | 按摩机构空转状态监测平台及方法 |
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JP5040242B2 (ja) * | 2006-09-29 | 2012-10-03 | 井関農機株式会社 | コンバイン |
JP5134238B2 (ja) * | 2006-12-15 | 2013-01-30 | 株式会社小松製作所 | 作業車両のエンジン負荷制御装置 |
JP4812843B2 (ja) * | 2007-01-18 | 2011-11-09 | 株式会社小松製作所 | エンジンの制御装置及びその制御方法 |
JP5264091B2 (ja) * | 2007-03-09 | 2013-08-14 | カヤバ工業株式会社 | メカニカルスロットル車両のオートモーティブ制御装置 |
JP5069518B2 (ja) * | 2007-08-10 | 2012-11-07 | 日立建機株式会社 | 作業機械の走行システム |
JP5204783B2 (ja) * | 2007-11-06 | 2013-06-05 | 日立建機株式会社 | 作業車両の排気ガス浄化システム |
KR101549253B1 (ko) * | 2008-12-24 | 2015-09-01 | 두산인프라코어 주식회사 | 건설장비의 아이들 상태에서 엔진 회전수 제어 장치 및 방법 |
JP2010220487A (ja) * | 2009-03-19 | 2010-10-07 | Yanmar Co Ltd | 田植機 |
-
2010
- 2010-12-21 KR KR1020100131189A patent/KR101685206B1/ko active IP Right Grant
-
2011
- 2011-12-21 EP EP11850744.1A patent/EP2657492B1/fr active Active
- 2011-12-21 CN CN201180061396.5A patent/CN103261643B/zh active Active
- 2011-12-21 US US13/994,538 patent/US20130289834A1/en not_active Abandoned
- 2011-12-21 WO PCT/KR2011/009920 patent/WO2012087020A2/fr active Application Filing
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
KR20120069868A (ko) | 2012-06-29 |
CN103261643A (zh) | 2013-08-21 |
US20130289834A1 (en) | 2013-10-31 |
EP2657492A2 (fr) | 2013-10-30 |
WO2012087020A2 (fr) | 2012-06-28 |
KR101685206B1 (ko) | 2016-12-12 |
EP2657492A4 (fr) | 2017-06-28 |
CN103261643B (zh) | 2017-02-15 |
WO2012087020A3 (fr) | 2012-09-07 |
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