公开(公告)号：EP0277253B1

公开(公告)日：1992-07-08

申请号：EP87905290.0

申请日：1987-08-15

申请人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO

发明人： KAMIDE, Takao ,  NAKAMURA, Kentaro ,  SAIGO, Takaichi ,  YOSHIDA, Katsumi

IPC分类号： F04B49/06

CPC分类号： E02F9/2235 ,  E02F9/2246 ,  F04B1/324 ,  F04B49/065 ,  F04B2203/0601 ,  F04B2203/0605 ,  F04B2205/05

摘要： A unit for controlling a variable capacity type hydraulic pump using an engine as a driving power source. This unit is provided with a means (5) for detecting the number of revolutions per minute of an engine, a means (6) for detecting the discharge pressure of a hydraulic pump, a means (12) for setting on the basis of the number of revolutions per minute of the engine the suction torque characteristics of the pump, which decrease monotonously with respect to this number of revolutions, a means (7) for determining an angle of pivotal movement of a swash plate in the pump on the basis of the suction torque characteristics and discharge pressure of the pump, a means (8) for controlling the swash plate in the pump so that this angle of pivotal movement of the swash plate of the pump can be attained, and means (7, 9, 10) for reducing the number of revolutions per minute of the engine on condition that the suction torque of the hydraulic pump does not exceed the allowable torque of the engine. According to this control unit, the number of revolutions per minute of the engine can be reduced to a lowest possible level, and a cost-per-mile can be minimized. Moreover, the angle of pivotal movement of the swash plate in the pump can be increased to a highest possible level, and the operational efficiency of the pump is improved.

公开(公告)号：EP0277253A1

公开(公告)日：1988-08-10

申请号：EP87905290.0

申请日：1987-08-15

申请人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO

发明人： KAMIDE, Takao ,  NAKAMURA, Kentaro ,  SAIGO, Takaichi ,  YOSHIDA, Katsumi

IPC分类号： F04B49/06

CPC分类号： E02F9/2235 ,  E02F9/2246 ,  F04B1/324 ,  F04B49/065 ,  F04B2203/0601 ,  F04B2203/0605 ,  F04B2205/05

摘要： A unit for controlling a variable capacity type hydraulic pump using an engine as a driving power source. This unit is provided with a means (5) for detecting the number of revolutions per minute of an engine, a means (6) for detecting the discharge pressure of a hydraulic pump, a means (12) for setting on the basis of the number of revolutions per minute of the engine the suction torque characteristics of the pump, which decrease monotonously with respect to this number of revolutions, a means (7) for determining an angle of pivotal i movement of a swash plate in the pump on the basis of the suction torque characteristics and discharge pressure of the pump, a means (8) for controlling the swash plate in the pump so that this angle of pivotal movement of the swash plate of the pump can be attained, and means (7, 8, 10) for reducing the number of revolutions per minute of the engine on condition that the suction torque of the hydraulic pump does not exceed the allowable torque of the engine. According to this control unit, the number of revolutions per minute of the engine can be reduced to a lowest possible level, and a cost-per-mile can be minimized. Moreover, the angle of pivotal movement of the swash plate in the pump can be increased to a highest possible level, and the operational efficiency of the pump is improved.

摘要翻译： 控制单元设置有用于检测发动机每分钟转数的发动机转速传感器（5）。 压力传感器（6）检测液压泵的排出压力，并且存储器（12）基于发动机的每分钟转数和泵的吸入转矩特性来设定。 相对于转数而言，它们单调减少。 控制器（7）用于基于泵的抽吸转矩特性和排出压力来确定旋转斜盘在泵中的枢转运动的角度。 旋转斜盘驱动致动器是（8），用于控制泵中的斜盘，使得可以获得泵的斜盘的这种转动角度。 如果液压泵的吸力不超过发动机的允许扭矩，则调速器和电磁阀用于（7,9,10）以减少发动机每分钟的转数。