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HYDRAULIC CONTROL DEVICE OF WHEELED INDUSTRIAL VEHICLE
An object is to reduce a load acting on an engine upon starting up the engine such that the engine can be quickly started up to reliably feed pressure oil from a hydraulic pump to an accumulator. A hydraulic control system is provided with first accumulators (24,25) connected to a hydraulic pump (23) via a first line (28) and second accumulators (26,27) connected to a second line (29) branching from the first line (28), an on/off valve (32) arranged in the second line and interposed between the first line (28) and the second accumulators (26, 27), an operation detection device (41) for detecting whether or not a starter (22) is in an operation state, a rotational frequency detection device (a rotary encoder (47) and rotational frequency calculation device (43)) for detecting a rotational frequency of an engine (21), and a valve control device for, upon detection of the operation state of the starter (22) by the operation detection device (41), controlling a valve position of the on/off valve (32) at a closed position until the rotational frequency reaches an idling rotational frequency set beforehand but then controlling the valve position of the on/off valve (32) at a closed position.
HYDRAULIC CONTROL DEVICE OF WHEELED INDUSTRIAL VEHICLE
An object is to reduce a load acting on an engine upon starting up the engine such that the engine can be quickly started up to reliably feed pressure oil from a hydraulic pump to an accumulator. A hydraulic control system is provided with first accumulators (24,25) connected to a hydraulic pump (23) via a first line (28) and second accumulators (26,27) connected to a second line (29) branching from the first line (28), an on/off valve (32) arranged in the second line and interposed between the first line (28) and the second accumulators (26, 27), an operation detection device (41) for detecting whether or not a starter (22) is in an operation state, a rotational frequency detection device (a rotary encoder (47) and rotational frequency calculation device (43)) for detecting a rotational frequency of an engine (21), and a valve control device for, upon detection of the operation state of the starter (22) by the operation detection device (41), controlling a valve position of the on/off valve (32) at a closed position until the rotational frequency reaches an idling rotational frequency set beforehand but then controlling the valve position of the on/off valve (32) at a closed position.
HYDRAULIC CONTROL DEVICE OF WHEELED INDUSTRIAL VEHICLE
HYDRAULISCHE STEUERUNGSVORRICHTUNG EINES NUTZFAHRZEUGES MIT RÄDERN
DISPOSITIF DE COMMANDE HYDRAULIQUE DE VÉHICULE INDUSTRIEL À ROUES
KODAKA KATSUAKI (author) / ITOGA KENTARO (author) / ICHIMURA KAZUHIRO (author)
2017-12-13
Patent
Electronic Resource
English
IPC:
E02F
Baggern
,
DREDGING
/
B60T
Bremsanlagen für Fahrzeuge oder Teile davon
,
VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF
/
F02D
CONTROLLING COMBUSTION ENGINES
,
Steuern oder Regeln von Brennkraftmaschinen
/
F15B
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL
,
Druckmittelbetriebene Systeme allgemein