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1. 发明公开

EP0432266A1 HYDRAULIC DRIVING UNIT FOR CONSTRUCTION MACHINERY 失效
标题翻译：水力发电机组（FURR BAUMASCHINEN）。
公开(公告)号：EP0432266A1
公开(公告)日：1991-06-19
申请号：EP90901893.9
申请日：1990-01-18
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： TATSUMI, Akira , HIRATA, Toichi , HAGA, Masakazu 6-403, Chiyoda-House , IZUMI, Eiki
IPC分类号： F15B11/00 , E02F9/22
CPC分类号： F16H61/4078 , B60W10/06 , E02F9/2235 , E02F9/2246 , E02F9/2296 , F15B2211/20553 , F15B2211/253 , F15B2211/50536 , F16H61/433 , F16H2059/6846
摘要： This invention relates to a hydraulic driving unit provided with: an engine (1); a variable capacity hydraulic pump (2) driven by said engine; at least one hydraulic actuator driven by oil delivered from the pump (6); a control valve means (8) for interconnecting the hydraulic pump and actuator and controlling the flow rate of hydraulic fluid fed to the actuator according to the degree of operation of an operating means (58); a pump control means (17) for controlling the displacement volume of the hydraulic pump according to the degree of operation of the operating means so that the discharge quantity of the hydraulic pump increases as the aforesaid degree of operation increases; and an engine control means (29) for controlling the RPM of the engine. The engine control means (29) monitors whether or not the discharge quantity of the hydraulic pump (2) reaches saturation and, when a specified saturation condition is reached by hydraulic pump, it can exhibit such functions (33,36) as increasing the RPM of the engine (1) and eliminating saturation.
摘要翻译：液压驱动装置技术领域本发明涉及一种具有发动机（1）的液压驱动装置。由所述发动机驱动的可变容量液压泵（2）由从所述泵（6）输送的油驱动的至少一个液压致动器; 控制阀装置（8），用于根据操作装置（58）的操作程度来互连液压泵和致动器并控制供给到致动器的液压流体的流量; 泵控制装置（17），用于根据操作装置的操作程度来控制液压泵的排量，使得液压泵的排出量随着上述操作程度的增加而增加; 以及用于控制发动机的RPM的发动机控制装置（29）。发动机控制装置（29）监视液压泵（2）的排出量是否达到饱和，并且当通过液压泵达到规定的饱和状态时，可以显示出增加RPM的功能（33,36）（1），消除饱和。

2. 发明授权

EP0432266B2 HYDRAULIC DRIVING UNIT FOR CONSTRUCTION MACHINERY 失效
标题翻译：液压驱动单元建设
公开(公告)号：EP0432266B2
公开(公告)日：1997-08-13
申请号：EP90901893.9
申请日：1990-01-18
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： TATSUMI, Akira , HIRATA, Toichi , HAGA, Masakazu 6-403, Chiyoda-House , IZUMI, Eiki
IPC分类号： F15B11/00 , E02F9/22
CPC分类号： F16H61/4078 , B60W10/06 , E02F9/2235 , E02F9/2246 , E02F9/2296 , F15B2211/20553 , F15B2211/253 , F15B2211/50536 , F16H61/433 , F16H2059/6846
摘要： This invention relates to a hydraulic driving unit provided with: an engine (1); a variable capacity hydraulic pump (2) driven by said engine; at least one hydraulic actuator driven by oil delivered from the pump (6); a control valve means (8) for interconnecting the hydraulic pump and actuator and controlling the flow rate of hydraulic fluid fed to the actuator according to the degree of operation of an operating means (58); a pump control means (17) for controlling the displacement volume of the hydraulic pump according to the degree of operation of the operating means so that the discharge quantity of the hydraulic pump increases as the aforesaid degree of operation increases; and an engine control means (29) for controlling the RPM of the engine. The engine control means (29) monitors whether or not the discharge quantity of the hydraulic pump (2) reaches saturation and, when a specified saturation condition is reached by hydraulic pump, it can exhibit such functions (33, 36) as increasing the RPM of the engine (1) and eliminating saturation.

3. 发明授权

EP0432266B1 HYDRAULIC DRIVING UNIT FOR CONSTRUCTION MACHINERY 失效
标题翻译：液压驱动单元进行施工。
公开(公告)号：EP0432266B1
公开(公告)日：1993-11-24
申请号：EP90901893.9
申请日：1990-01-18
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： TATSUMI, Akira , HIRATA, Toichi , HAGA, Masakazu 6-403, Chiyoda-House , IZUMI, Eiki
IPC分类号： F15B11/00 , E02F9/22
CPC分类号： F16H61/4078 , B60W10/06 , E02F9/2235 , E02F9/2246 , E02F9/2296 , F15B2211/20553 , F15B2211/253 , F15B2211/50536 , F16H61/433 , F16H2059/6846
摘要： This invention relates to a hydraulic driving unit provided with: an engine (1); a variable capacity hydraulic pump (2) driven by said engine; at least one hydraulic actuator driven by oil delivered from the pump (6); a control valve means (8) for interconnecting the hydraulic pump and actuator and controlling the flow rate of hydraulic fluid fed to the actuator according to the degree of operation of an operating means (58); a pump control means (17) for controlling the displacement volume of the hydraulic pump according to the degree of operation of the operating means so that the discharge quantity of the hydraulic pump increases as the aforesaid degree of operation increases; and an engine control means (29) for controlling the RPM of the engine. The engine control means (29) monitors whether or not the discharge quantity of the hydraulic pump (2) reaches saturation and, when a specified saturation condition is reached by hydraulic pump, it can exhibit such functions (33, 36) as increasing the RPM of the engine (1) and eliminating saturation.

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