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1.发明授权
公开(公告)号：US5930996A
公开(公告)日：1999-08-03
申请号：US164365
申请日：1998-10-01
申请人： Kazunori Nakamura , Ei Takahashi , Tsukasa Toyooka , Kouji Ishikawa , Tsuyoshi Nakamura , Yoichi Kowatari , Tadatoshi Shimamura , Genroku Sugiyama , Toichi Hirata
发明人： Kazunori Nakamura , Ei Takahashi , Tsukasa Toyooka , Kouji Ishikawa , Tsuyoshi Nakamura , Yoichi Kowatari , Tadatoshi Shimamura , Genroku Sugiyama , Toichi Hirata
CPC分类号： E02F9/2296 , E02F9/2235 , E02F9/2246 , E02F9/2282 , E02F9/2285 , E02F9/2292
摘要： In the arm-crowding or track operation, a calculating portion (700d2 or 700d4) calculates a modification gain (KAC or KTR) depending on an operation pilot pressure and a calculating portion (700g) calculates a decrease modification (DND) based on the KAC or KTR, while a calculating portion (700m or 700p) calculates a modification gain (KACH or KTRH) depending on an operation pilot pressure and calculating portions (700q-700s) calculate an increase modification (DNH) based on the KACH or KTRH. A reference target engine revolution speed NR0 is modified using the DND and DNH. In other operations than the arm-crowding and track operations, NR0 is modified using only the decrease modification (DND) calculated from the modification gain just depending on the operation pilot pressure. In the operation where an engine revolution speed is desired to become higher as an actuator load increases, the engine revolution speed can be controlled in accordance with change of the actuator load as well. In other operations, the engine revolution speed can be controlled just depending on the direction and input amount in and by which corresponding operation instructing apparatus is operated.
摘要翻译： 在手臂拥挤或轨道操作中，计算部分（700d2或700d4）根据操作先导压力计算修正增益（KAC或KTR），并且计算部分（700g）基于KAC计算减小修改（DND） 或KTR，而计算部分（700m或700p）根据操作先导压力计算修正增益（KACH或KTRH），并且计算部分（700q-700s）基于KACH或KTRH计算增加修改（DNH）。 使用DND和DNH修改参考目标发动机转速NR0。 在除了拥挤和跟踪操作之外的其他操作中，NR0仅使用根据操作先导压力从修改增益计算的减少修改（DND）进行修改。 在致动器负载增加时希望发动机转速变高的操作中，也可以根据致动器负载的变化来控制发动机转速。 在其他操作中，可以根据相应的操作指示装置的操作方向和输入量来控制发动机转速。
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公开(公告)号：US07493978B2
公开(公告)日：2009-02-24
申请号：US10541450
申请日：2004-07-30
IPC分类号： F02D29/04
CPC分类号： F02D41/021 , E02F9/2246 , F02D29/02 , F02D31/001
摘要： A traveling hydraulic working machine has a target revolution speed of an engine commanded by an input and sensors for detecting an operating situation of a hydraulic actuator and an operating situation of a traveling system. A prime-mover revolution speed control modifies the target revolution speed of the prime mover when the operating situation of the hydraulic actuator and the operating situation of the traveling system come into respective particular states, and controls the revolution speed of the prime mover, With the traveling hydraulic working machine, in the combined operation of traveling and working a hydraulic actuator, work can be performed on the basis of the engine revolution speed intended by an operator. When a working load varies, the engine revolution speed is automatically controlled.
摘要翻译： 行驶液压作业机具有由输入装置引导的发动机的目标转速以及用于检测液压致动器的运转状况的传感器和行驶系统的运转状况。 原动机转速控制可以在液压执行器的运行状态和行驶系统的运行状态达到各自的特定状态时修改原动机的目标转速，并控制原动机的转速。 行驶液压作业机，在组合操作液压执行机构的同时进行工作时，可以根据操作者的发动机转速进行工作。 当工作负载变化时，发动机转速自动控制。
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公开(公告)号：US20060201147A1
公开(公告)日：2006-09-14
申请号：US10543920
申请日：2004-11-15
IPC分类号： F16D31/02
CPC分类号： B60W10/30 , B66F9/0655 , B66F9/20 , E02F9/2235 , E02F9/2296 , F04B49/065 , F04B2203/0603 , F16H2059/467
摘要： A modification torque computing unit 83 computes a modification torque ΔT and a torque converter speed ratio e is computed from input and output revolution speeds of a torque converter 31. A first determination coefficient α corresponding to the speed ratio e, and a second determination coefficient β corresponding to a pump pressure are computed. A selector 87 selects the smaller one of these coefficients as a determination coefficient γ, and the modification torque ΔT is multiplied by γ to provide a modification torque ΔTA. An adder 89 adds the modification torque ΔTA (negative value) to a pump base torque TR to provide a modified pump base torque TRA, whereby a maximum pump absorption torque TRA is controlled so as to become TRA. The maximum pump torque reducing control can then be performed while accurately confirming a work situation during the combined operation of travel and a working actuator.
摘要翻译： 修改扭矩计算单元83计算修正转矩DeltaT，并且由变矩器31的输入和输出转速计算变矩器速度比e。 计算对应于速比e的第一确定系数α和对应于泵压的第二确定系数β。 选择器87选择这些系数中的较小的一个作为确定系数γ，并且将修正转矩DeltaT乘以伽玛以提供修改转矩DeltaTA。 加法器89将修正转矩DeltaTA（负值）与泵基本转矩TR相加以提供改进的泵基本转矩TRA，由此控制最大泵吸收转矩TRA以变成TRA。 然后可以在行驶和工作执行器的组合操作期间精确地确认工作情况的同时执行最大泵扭矩降低控制。
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4.发明授权Control system for prime mover and hydraulic pump of hydraulic construction machine 有权液压施工机械原动机和液压泵控制系统
公开(公告)号：US5911506A
公开(公告)日：1999-06-15
申请号：US166848
申请日：1998-10-06
申请人： Kazunori Nakamura , Ei Takahashi , Tsukasa Toyooka , Kouji Ishikawa , Tsuyoshi Nakamura , Yoichi Kowatari , Tadatoshi Shimamura , Genroku Sugiyama , Toichi Hirata
发明人： Kazunori Nakamura , Ei Takahashi , Tsukasa Toyooka , Kouji Ishikawa , Tsuyoshi Nakamura , Yoichi Kowatari , Tadatoshi Shimamura , Genroku Sugiyama , Toichi Hirata
CPC分类号： E02F9/2285 , E02F9/2235 , E02F9/2246 , E02F9/2282 , E02F9/2292 , E02F9/2296
摘要： A reference pump-delivery-rate calculating portion calculates a reference delivery rate of a hydraulic pump by referring to a table stored in a memory based on a control pilot pressure for the hydraulic pump. A target pump-delivery-rate calculating portion divides the reference delivery rate by a ratio of a maximum revolution speed to a target engine revolution speed, thereby calculating a target delivery rate. A target pump tilting calculating portion divides the target delivery rate by an actual engine revolution speed and a constant, thereby calculating a target tilting. A solenoid output current calculating portion calculates a drive current to provide the target tilting and outputs the drive current to a solenoid control valve. The pump delivery rate is thereby controlled with good response following input change of an operation instructing device.
摘要翻译： 参考泵送出速度计算部分基于用于液压泵的控制先导压力参考存储在存储器中的表来计算液压泵的参考输出速率。 目标泵输送速度计算部分将参考输出速率除以最大转速与目标发动机转速的比值，由此计算目标输送速率。 目标泵倾转计算部将目标输送速度除以实际发动机转速和常数，由此计算目标倾斜。 螺线管输出电流计算部分计算驱动电流以提供目标倾斜，并将驱动电流输出到电磁控制阀。 由此，在操作指示装置的输入变化之后，以良好的响应来控制泵送出速度。
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公开(公告)号：US5940997A
公开(公告)日：1999-08-24
申请号：US145158
申请日：1998-09-01
申请人： Tsukasa Toyooka , Toichi Hirata , Genroku Sugiyama , Kazunori Nakamura , Kouji Ishikawa , Tsuyoshi Nakamura
发明人： Tsukasa Toyooka , Toichi Hirata , Genroku Sugiyama , Kazunori Nakamura , Kouji Ishikawa , Tsuyoshi Nakamura
IPC分类号： E02F9/22
CPC分类号： E02F9/2267 , E02F9/2221 , E02F9/2232 , E02F9/2242 , E02F9/2271 , E02F9/2282 , E02F9/2285 , E02F9/2292 , E02F9/2296
摘要： A hydraulic circuit system includes a shuttle block, and shuttle valves are arranged and connected within the shuttle block. The maximum pressure in a predetermined operation signal pressure group selected from operation signal pressures generated by pilot operating units is selected to produce a control signal pressure within the shuttle block. The control signal pressure is output to control devices such as a track communicating valve, a swing brake cylinder, and regulators for hydraulic pumps.
摘要翻译： 一个液压回路系统包括一个梭子块，并且梭阀布置并连接在梭子块内。 从由先导操作单元产生的操作信号压力中选择的预定操作信号压力组中的最大压力被选择以产生梭模块内的控制信号压力。 控制信号压力输出到诸如轨道连通阀，回转制动缸和液压泵调节器之类的控制装置。
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公开(公告)号：US07370475B2
公开(公告)日：2008-05-13
申请号：US10543920
申请日：2004-11-15
IPC分类号： F16D31/02
CPC分类号： B60W10/30 , B66F9/0655 , B66F9/20 , E02F9/2235 , E02F9/2296 , F04B49/065 , F04B2203/0603 , F16H2059/467
摘要： A modification torque ΔT and a torque converter speed ratio e is computed from input and output revolution speeds of a torque converter 31. A first determination coefficient α corresponding to the speed ratio e, and a second determination coefficient β corresponding to a pump pressure are computed. A selector 87 selects the smaller one of these coefficients as a determination coefficient γ, and the modification torque ΔT is multiplied by γ to provide a modification torque ΔTA. An adder 89 adds the modification torque ΔTA (negative value) to a pump base torque TR to provide a modified pump base torque TRA, whereby a maximum pump absorption torque TRA is controlled so as to become TRA. The maximum pump torque reducing control can then be performed while accurately confirming a work situation during the combined operation of travel and a working actuator.
摘要翻译： 根据变矩器31的输入和输出转速来计算修正转矩DeltaT和变矩器速比e。 计算对应于速比e的第一确定系数α和对应于泵压的第二确定系数β。 选择器87选择这些系数中的较小的一个作为确定系数γ，并且将修正转矩DeltaT乘以伽玛以提供修改转矩DeltaTA。 加法器89将修正转矩DeltaTA（负值）与泵基本转矩TR相加以提供改进的泵基本转矩TRA，由此控制最大泵吸收转矩TRA以变成TRA。 然后可以在行驶和工作执行器的组合操作期间精确地确认工作情况的同时执行最大泵扭矩降低控制。
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公开(公告)号：US5267440A
公开(公告)日：1993-12-07
申请号：US854668
申请日：1992-05-04
申请人： Kazunori Nakamura , Yusuke Kajita , Toichi Hirata , Genroku Sugiyama , Hiroshi Onoue , Hideaki Tanaka , Osamu Tomikawa , Masakazu Haga , Hiroshi Watanabe
发明人： Kazunori Nakamura , Yusuke Kajita , Toichi Hirata , Genroku Sugiyama , Hiroshi Onoue , Hideaki Tanaka , Osamu Tomikawa , Masakazu Haga , Hiroshi Watanabe
CPC分类号： E02F9/2285 , E02F9/2232 , E02F9/2235 , E02F9/2296
摘要： In a controller (229) of a hydraulic control system for construction machines, a valve control signal calculating function (301) works such that when an operation pattern signal (A-I) for actuators (201, 202 . . . ) is outputted, it selects corresponding one of plural output patterns for an auxiliary valve control pressure stored, as a function of a differential pressure signal between a pump delivery pressure and a maximum load pressure, in relation to the operation pattern signals, followed by calculating an auxiliary valve control pressure (Pc) dependent upon the differential pressure signal based on the selected output pattern, and also selects corresponding one of plural sets of rates of change (K . . . , K . . . ) for the auxiliary valve control pressure stored in relation to the operation pattern signals, followed by combining the calculated auxiliary valve control amount with the selected set of speed changes to calculate each of valve control signals (S21-S26).
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8.发明授权
公开(公告)号：US5152140A
公开(公告)日：1992-10-06
申请号：US640440
申请日：1991-02-06
CPC分类号： F15B13/0417 , E02F9/2232 , E02F9/2296 , Y10T137/7858
摘要： A hydraulic drive system has a hydraulic pump (1), an actuator (2), a flow control valve (5) disposed between the hydraulic pump and the actuator, a pressure compensating valve (8; 8A; 8B) having a valve spool (23; 23A; 23B) that controls the differential pressure (Pz-PLS) across the flow control valve, and a pump delivery rate control device (9) for controlling a flow rate of the hydraulic fluid delivered from the hydraulic pump dependent on a differential pressure (Pd-PLS) between a pump pressure and a load pressure of the actuator. The pressure compensating valve has a first control chamber (30; 30A) subjected to the load pressure (PLS) of the actuator such that the load pressure acts on a first pressure receiving section (28; 28A) of the valve spool to urge the valve spool in the valve-opening direction, a second control chamber (29; 29A) subjected to the inlet pressure (Pz) of the flow control valve such that the inlet pressure acts on a second pressure receiving section (27; 27A) of the valve spool to urge the valve spool in the valve-closing direction, and a target differential pressure setting arrangement (31, 50, 51; 31B, 51) for urging the valve spool in the valve-opening direction. A damping capability to the actuator (2) is provided by setting pressure receiving area (Az) of the second pressure receiving section (27; 27A) to be greater than a pressure receiving area (ALS) of the first pressure receiving section (28; 28A).
摘要翻译： PCT No.PCT / JP90 / 01310 Sec。 371日期1991年2月6日 102（e）日期1991年2月6日PCT 1990年10月11日PCT PCT。 出版物WO91 / 05958 日期：1991年5月2日。液压驱动系统具有液压泵（1），致动器（2），设置在液压泵和致动器之间的流量控制阀（5），压力补偿阀（8; 8A; 8B ）具有控制跨过流量控制阀的差压（Pz-PLS）的阀芯（23; 23A; 23B）和用于控制从所述流量控制阀输送的液压流体的流量的泵输送速率控制装置（9） 液压泵取决于泵压力和执行器的负载压力之间的压差（Pd-PLS）。 压力补偿阀具有受到致动器的负载压力（PLS）的第一控制室（30; 30A），使得负载压力作用在阀芯的第一压力接收部分（28; 28A）上，以推动阀 阀门处于阀打开方向，第二控制室（29; 29A）经受流量控制阀的入口压力（Pz），使得入口压力作用在阀的第二压力接收部分（27; 27A）上 阀芯沿阀关闭方向推压阀芯，以及用于沿阀打开方向推压阀芯的目标压差设定装置（31,50,51; 31B，51）。 通过将第二受压部分（27; 27A）的压力接收面积（Az）设定为大于第一压力接收部分（28; 27）的受压面积（ALS）来提供致动器（2）的阻尼能力。 28A）。
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公开(公告)号：US20060113140A1
公开(公告)日：2006-06-01
申请号：US10541450
申请日：2004-07-30
IPC分类号： B60K17/00
CPC分类号： F02D41/021 , E02F9/2246 , F02D29/02 , F02D31/001
摘要： A traveling hydraulic working machine has input means for commanding a target revolution speed of an engine and detection means for detecting an operating situation of a hydraulic actuator and an operating situation of traveling means. A prime-mover revolution speed control means modifies the target revolution speed of the prime mover when the operating situation of the hydraulic actuator and the operating situation of the traveling means come into respective particular states, and controls the revolution speed of the prime mover. With the traveling hydraulic working machine, in the combined operation of traveling and working a hydraulic actuator, work can be performed on the basis of the engine revolution speed intended by an operator. When a working load varies, the engine revolution speed is automatically controlled.
摘要翻译： 行驶液压作业机具有用于指示发动机的目标转速的输入装置和用于检测液压致动器的运行状况的检测装置和行驶装置的运行状况。 原动机转速控制装置在液压致动器的运行状态和行驶装置的运转状态成为各自的特定状态时，修正原动机的目标转速，并控制原动机的转速。 通过行走液压作业机，在液压执行器的行驶和加工的组合操作中，可以根据操作者所期望的发动机转速进行工作。 当工作负载变化时，发动机转速自动控制。
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公开(公告)号：US07512471B2
公开(公告)日：2009-03-31
申请号：US10545322
申请日：2004-08-10
CPC分类号： E02F9/2296 , B60W10/04 , B60W10/06 , B60W10/103 , B60W10/30 , B60W30/1819 , B60W30/1882 , B60Y2200/415 , E02F9/2235 , E02F9/2246 , F02D29/02 , F02D2250/18 , F04B49/065 , F04B2203/0603 , F04B2203/0605 , F16H61/46 , F16H61/468
摘要： The invention provides a control system for a working vehicle, which can realize higher work performance and better fuel economy in a compatible way. A controller 10 includes table 10a, 10b and tables 10e, 10f for deciding maximum pump absorption torques and engine output torques based on an engine revolution speed, and selectors 10c, 10g for switching over the decided maximum pump absorption torques and engine output torques depending on a work performance mode or a fuel economy mode is selected. A pump absorption torque characteristic for the fuel economy mode is set so as to provide a relative small maximum pump absorption torques TB in a high revolution range, and an engine output characteristic for the fuel economy mode is set so as to provide a relatively small engine output torque in the high revolution range.
摘要翻译： 本发明提供一种用于工作车辆的控制系统，其可以以兼容的方式实现更高的工作性能和更好的燃料经济性。 控制器10包括用于基于发动机转速决定最大泵吸收扭矩和发动机输出转矩的表10a，10b和表10e，10f，以及用于切换所决定的最大泵吸收转矩和根据发动机输出转矩的发动机输出转矩的选择器10c， 选择工作性能模式或燃料经济模式。 设定用于燃料经济性模式的泵吸收扭矩特性，以便在高转速范围内提供相对较小的最大泵吸收扭矩TB，并且设定用于燃料经济性模式的发动机输出特性以便提供相对较小的发动机 输出转矩在高转速范围内。
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