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1. WO2020066098 - CONSTRUCTION MACHINE

Publication Number WO/2020/066098
Publication Date 02.04.2020
International Application No. PCT/JP2019/016724
International Filing Date 18.04.2019
IPC
E02F 9/26 2006.01
EFIXED CONSTRUCTIONS
02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING
FDREDGING; SOIL-SHIFTING
9Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/-E02F7/160
26Indicating devices
F02D 29/02 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
29Controlling 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
02peculiar to engines driving vehicles; peculiar to engines driving variable-pitch propellers
F02D 29/04 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
29Controlling 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
04peculiar to engines driving pumps
F02D 45/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
45Electrical control not provided for in groups F02D41/-F02D43/98
CPC
E02F 9/26
EFIXED CONSTRUCTIONS
02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
FDREDGING; SOIL-SHIFTING
9Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
26Indicating devices
F02D 29/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
29Controlling 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
02peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
F02D 29/04
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
29Controlling 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
04peculiar to engines driving pumps
F02D 45/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
45Electrical control not provided for in groups F02D41/00 - F02D43/00
Applicants
  • 日立建機株式会社 HITACHI CONSTRUCTION MACHINERY CO., LTD. [JP]/[JP]
Inventors
  • 宇田川 勉 UDAGAWA Tsutomu
  • 山本 純司 YAMAMOTO Junji
  • 櫻井 茂行 SAKURAI Shigeyuki
  • 鈴木 幸仁 SUZUKI Yukihito
  • 束田 英信 TSUKADA Hidenobu
  • 神田 敦司 KANDA Atsushi
Agents
  • 特許業務法人開知国際特許事務所 KAICHI IP
Priority Data
2018-18105526.09.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) CONSTRUCTION MACHINE
(FR) ENGIN DE CHANTIER
(JA) 建設機械
Abstract
(EN)
Diagnostic precision of engine deterioration is improved while suppressing the cost required for the operation of diagnosing deterioration such as reduction in output of the engine. Toward this end, a controller 37 (engine diagnosis device): determines whether a hydraulic pump 12 is in a preset load state for acquiring diagnosis data of the engine 10 (operation scene in which the load torque of a hydraulic pump 12 is stabilized); activates, as diagnosis data for the engine 10, a control amount relating to a torque command value Ta for a speed-sensing control when the hydraulic pump 12 is determined to be in the preset load state; generates time history data using the activated control amount as the present feature amount; and makes the time history data displayable on a display device 38 as trend data for engine diagnosis.
(FR)
Dans la présente invention, la précision du diagnostic de la détérioration du moteur est améliorée tout en supprimant le coût requis pour la mise en œuvre du diagnostic de détérioration, telle qu'une réduction du rendement-moteur. À cet effet, un dispositif de contrôle (37) (dispositif de diagnostic de moteur) : détermine si une pompe hydraulique (12) se trouve dans un état de charge prédéfini pour acquérir des données de diagnostic du moteur (10) (scène de fonctionnement dans laquelle le couple de charge d'une pompe hydraulique (12) est stabilisé) ; active, sous forme de données de diagnostic destinées au moteur (10), un degré de contrôle relatif à une valeur de contrôle de couple Ta destinée à un contrôle de détection de vitesse lorsqu'il est déterminé que la pompe hydraulique (12) se trouve dans l'état de charge prédéfini ; génère des données d'historique temporelles en faisant appel au degré de contrôle activé en tant que quantité caractéristique actuelle ; et permet d'afficher les données d'historique temporelles sur un dispositif d'affichage (38) en tant que données de tendance pour le diagnostic du moteur.
(JA)
エンジンの出力低下等の劣化診断の運用に要するコストを抑えつつ、エンジン劣化の診断精度を向上させる。そのため、コントローラ37(エンジン診断装置)は、油圧ポンプ12がエンジン10の診断データを取得するための予め定めた負荷状態(油圧ポンプ12の負荷トルクが安定した状態となる動作シーン)にあるかどうかを判定し、油圧ポンプ12が予め定めた負荷状態にあると判定したときに、スピードセンシング制御のトルク指令値Taに係わる制御量をエンジン10の診断データとして有効化し、この有効化した制御量を現在の特徴量として用いて時刻歴データを生成し、この時刻歴データをエンジン診断用のトレンドデータとして表示装置38に表示可能とする。
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