公开(公告)号：US20100218493A1

公开(公告)日：2010-09-02

申请号：US12159265

申请日：2007-09-07

申请人： Kazunori Nakamura ,  Kouji Ishikawa ,  Nobuei Ariga ,  Akihiro Narazaki

发明人： Kazunori Nakamura ,  Kouji Ishikawa ,  Nobuei Ariga ,  Akihiro Narazaki

IPC分类号： F16D31/02

CPC分类号： F15B11/17 ,  E02F9/2235 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  F15B2211/20553 ,  F15B2211/20576 ,  F15B2211/26 ,  F15B2211/265

摘要： Torque control for a construction machine three-pump system that can accurately control the total absorption torque of first, second, and third hydraulic pumps and effectively use the output torque of an engine. A pump base torque computation section 42 calculates a pump base torque Tr from a target rotation speed. A subtraction section 44 calculates a reference value Tf for the maximum absorption torque available to the first and second hydraulic pumps 2, 3 by subtracting a third pump reference absorption torque T3r from the pump base torque Tr. A correction torque computation section 45 calculates a correction torque value from the delivery pressure of the third hydraulic pump 4. An addition section 46 calculates a target absorption torque Tn by adding the correction torque value Tm to the reference value Tf. A first regulator 31 is controlled so as to obtain the target absorption torque Tn.

摘要翻译： 施工机械三泵系统的扭矩控制可以精确控制第一，二，三液压泵的总吸收转矩，有效地利用发动机的输出转矩。 泵基转矩运算部42根据目标转速​​来计算泵基转矩Tr。 减法部分44通过从泵基本扭矩Tr减去第三泵参考吸收转矩T3r来计算第一和第二液压泵2,3的可用的最大吸收扭矩的参考值Tf。 校正扭矩计算部45根据第三液压泵4的输出压力来计算修正转矩值。加法部46通过将校正转矩值Tm与基准值Tf相加来计算目标吸收转矩Tn。 控制第一调节器31以获得目标吸收扭矩Tn。

公开(公告)号：US08371117B2

公开(公告)日：2013-02-12

申请号：US12159265

申请日：2007-09-07

申请人： Kazunori Nakamura ,  Kouji Ishikawa ,  Nobuei Ariga ,  Akihiro Narazaki

发明人： Kazunori Nakamura ,  Kouji Ishikawa ,  Nobuei Ariga ,  Akihiro Narazaki

IPC分类号： F16D31/02

CPC分类号： F15B11/17 ,  E02F9/2235 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  F15B2211/20553 ,  F15B2211/20576 ,  F15B2211/26 ,  F15B2211/265

摘要： Torque control for a construction machine three-pump system that can accurately control the total absorption torque of first, second, and third hydraulic pumps and effectively use the output torque of an engine. A pump base torque computation section 42 calculates a pump base torque Tr from a target rotation speed. A subtraction section 44 calculates a reference value Tf for the maximum absorption torque available to the first and second hydraulic pumps 2, 3 by subtracting a third pump reference absorption torque T3r from the pump base torque Tr. A correction torque computation section 45 calculates a correction torque value from the delivery pressure of the third hydraulic pump 4. An addition section 46 calculates a target absorption torque Tn by adding the correction torque value Tm to the reference value Tf. A first regulator 31 is controlled so as to obtain the target absorption torque Tn.

摘要翻译： 施工机械三泵系统的扭矩控制可以精确控制第一，二，三液压泵的总吸收转矩，有效地利用发动机的输出转矩。 泵基转矩运算部42根据目标转速​​来计算泵基转矩Tr。 减法部分44通过从泵基本扭矩Tr减去第三泵参考吸收转矩T3r来计算第一和第二液压泵2,3的可用的最大吸收扭矩的参考值Tf。 校正扭矩计算部45根据第三液压泵4的输出压力来计算修正转矩值。加法部46通过将校正转矩值Tm与基准值Tf相加来计算目标吸收转矩Tn。 控制第一调节器31以获得目标吸收扭矩Tn。

公开(公告)号：US08006491B2

公开(公告)日：2011-08-30

申请号：US12282591

申请日：2008-01-22

申请人： Akihiro Narazaki ,  Kouji Ishikawa ,  Nobuei Ariga

发明人： Akihiro Narazaki ,  Kouji Ishikawa ,  Nobuei Ariga

IPC分类号： F15B11/02 ,  E02F99/22

CPC分类号： E02F9/2235 ,  E02F9/2282 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  F04B17/05

摘要： On the basis of reference torque and torque correction amount output units (T1 and T2), a torque control command pressure is calculated so that the input torques of first and second pumps are increased. The calculated torque command instruction pressure is then supplied as external command pressure to the varying mechanism of a regulator used for the first and second pumps so as to prevent the input torques of the first and second pumps from being decreased more than necessary. As a result, even when three variable displacement hydraulic pumps are used with the discharge pressure of one of the hydraulic pumps reduced by a pressure reducing valve and further the input torques of the other two hydraulic pumps are decreased by that pressure, the engine output can be efficiently utilized, and the work rate does not decrease.

摘要翻译： 基于参考扭矩和扭矩校正量输出单元（T1和T2），计算转矩控制指令压力，使得第一和第二泵的输入转矩增加。 然后将计算出的转矩指令指令压力作为外部指令压力提供给用于第一和第二泵的调节器的变化机构，以防止第一和第二泵的输入转矩减小到超过所需的压力。 结果，即使使用三个可变排量液压泵，其中一个液压泵的排出压力由减压阀减小，另外两个液压泵的输入转矩也减小了该压力，发动机输出可以 有效利用，工作率不降低。

公开(公告)号：US20090044528A1

公开(公告)日：2009-02-19

申请号：US12282591

申请日：2008-01-22

申请人： Akihiro Narazaki ,  Kouji Ishikawa ,  Nobuei Ariga

发明人： Akihiro Narazaki ,  Kouji Ishikawa ,  Nobuei Ariga

IPC分类号： F16D31/02

CPC分类号： E02F9/2235 ,  E02F9/2282 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  F04B17/05

摘要： On the basis of reference torque and torque correction amount output units (T1 and T2), a torque control command pressure is calculated so that the input torques of first and second pumps are increased. The calculated torque command instruction pressure is then supplied as external command pressure to the varying mechanism of a regulator used for the first and second pumps so as to prevent the input torques of the first and second pumps from being decreased more than necessary. As a result, even when three variable displacement hydraulic pumps are used with the discharge pressure of one of the hydraulic pumps reduced by a pressure reducing valve and further the input torques of the other two hydraulic pumps are decreased by that pressure, the engine output can be efficiently utilized, and the work rate does not decrease.

摘要翻译： 基于参考扭矩和扭矩校正量输出单元（T1和T2），计算转矩控制指令压力，使得第一和第二泵的输入转矩增加。 然后将计算出的转矩指令指令压力作为外部指令压力提供给用于第一和第二泵的调节器的变化机构，以防止第一和第二泵的输入转矩减小到超过所需的压力。 结果，即使使用三个可变排量液压泵，其中一个液压泵的排出压力由减压阀减小，另外两个液压泵的输入转矩也减小了该压力，发动机输出可以 有效利用，工作率不降低。

公开(公告)号：US07584611B2

公开(公告)日：2009-09-08

申请号：US11632474

申请日：2005-11-18

申请人： Nobuei Ariga ,  Kazunori Nakamura ,  Kouji Ishikawa

发明人： Nobuei Ariga ,  Kazunori Nakamura ,  Kouji Ishikawa

IPC分类号： F16D31/02

CPC分类号： F15B21/14 ,  E02F9/2235 ,  E02F9/2242 ,  E02F9/2246 ,  E02F9/2292 ,  E02F9/2296 ,  F02B3/06 ,  F02D29/02 ,  F02D31/007 ,  F02D41/021 ,  F02D2200/604 ,  F15B11/17 ,  F15B21/087 ,  F15B2211/20553 ,  F15B2211/20576 ,  F15B2211/88

摘要： When a mode selection command selects an economy mode, a mode selector 700e is turned on and outputs an engine revolution speed modification value ΔN0 (ΔN1=ΔN0) computed by an engine-revolution-speed modification value computing section 700d. A subtracter 700f subtracts the engine revolution speed modification value ΔN1 from a rated target revolution speed Nmax, thereby computing a target engine revolution speed NR2. The computing section 700d computes the engine revolution speed modification value ΔN0 depending on a pump delivery pressure mean value Pm. In a table stored in a memory, the relationship between Pm and ΔN0 is set such that when Pm is not higher than PA near a midpoint pressure, ΔN0 is 0 and when Pm exceeds PA, ΔN0 is increased with an increase of Pm. Thus, the revolution speed of a prime mover is reduced by mode selection so as to improve fuel economy.

摘要翻译： 当模式选择命令选择经济模式时，模式选择器700e被接通并输出由发动机转速修正值计算部700d计算的发动机转速修正值DeltaN0（DeltaN1 = DeltaN0）。 减速器700f从额定目标转速Nmax中减去发动机转速修正值DeltaN1，从而计算目标发动机转速NR2。 计算部700d根据泵输送压力平均值Pm计算发动机转速修正值DeltaN0。 在存储在存储器中的表中，设定Pm和DeltaN0之间的关系，使得当Pm不高于中点附近的PA时，DeltaN0为0，当Pm超过PA时，ΔN0随着Pm的增加而增加。 因此，通过模式选择来减少原动机的转速，以提高燃油经济性。

公开(公告)号：US20080236157A1

公开(公告)日：2008-10-02

申请号：US10569490

申请日：2004-08-27

申请人： Yoichi Kowatari ,  Yasushi Arai ,  Kouji Ishikawa ,  Kazunori Nakamura ,  Nobuei Ariga ,  Hideo Karasawa ,  Yuuki Gotou ,  Motoyuki Yabuuchi

发明人： Yoichi Kowatari ,  Yasushi Arai ,  Kouji Ishikawa ,  Kazunori Nakamura ,  Nobuei Ariga ,  Hideo Karasawa ,  Yuuki Gotou ,  Motoyuki Yabuuchi

IPC分类号： F16D31/00

CPC分类号： F04B49/08 ,  E02F9/2246 ,  E02F9/2285 ,  E02F9/2296 ,  F04B17/05 ,  F15B2211/20553 ,  F15B2211/633 ,  F15B2211/6346 ,  F15B2211/6652 ,  F15B2211/851

摘要： An engine lag down suppressing device of construction machinery, comprising a vehicle body controller (13) having a first torque control means and a second torque control means, and a third torque control means. The first torque control means controls a torque control valve (7) to the minimum pump torque (value: Min) according to a target engine rotational speed (Nr) when the operating device (5) in the non-operated state of an continues for a monitoring time (TX1) to suppress an engine lag down after a specified holing time to hold a torque to a low pump torque is passed when the operating device in the non-operated state is operated. The second torque control means controls the torque control valve (7) to hold the minimum pump torque for a specified holding time (Tx2) after the operating device (5) in the non-operated state is operated. The third torque control means comprises a solenoid valve (16) and controls the torque control valve (7) to gradually increase the pump torque with elapse of time from a time when the specified holding time (TX2) is passed based on a specified torque increasing rate (K).

摘要翻译： 一种工程机械的发动机减速装置，包括具有第一转矩控制装置和第二转矩控制装置的车体控制器（13）和第三转矩控制装置。 当处于非操作状态的操作装置（5）持续时，第一扭矩控制装置根据目标发动机转速（Nr）将转矩控制阀（7）控制到最小泵扭矩（值：Min） 当处于非操作状态的操作装置被操作时，通过在指定的启动时间之后抑制发动机滞后的监视时间（TX 1），以将扭矩保持在低的泵转矩。 在操作非操作状态的操作装置（5）之后，第二转矩控制装置控制转矩控制阀（7）将最小泵转矩保持在指定的保持时间（Tx 2）。 第三转矩控制装置包括电磁阀（16），并且控制转矩控制阀（7），以便在从指定的保持时间（TX2）通过指定的转矩时起经过时间逐渐增加泵的转矩 增加率（K）。

公开(公告)号：US07543448B2

公开(公告)日：2009-06-09

申请号：US10585983

申请日：2005-10-05

申请人： Kazunori Nakamura ,  Kouji Ishikawa ,  Nobuei Ariga ,  Hideo Karasawa ,  Yasuo Okano

发明人： Kazunori Nakamura ,  Kouji Ishikawa ,  Nobuei Ariga ,  Hideo Karasawa ,  Yasuo Okano

IPC分类号： F16D31/02

CPC分类号： F02D29/04 ,  E02F9/2235 ,  E02F9/2242 ,  E02F9/2246 ,  E02F9/2292 ,  E02F9/2296 ,  F02D31/001 ,  F02D41/021 ,  F04B49/065

摘要： A computing section computes a reference revolution-speed decrease modification amount DNLR; and multiplies an engine revolution speed modification gain KNL by a reference revolution-speed decrease modification amount DNL and then DNLR, to thereby compute an engine revolution-speed decrease modification amount DND based on input change of an operation pilot pressure, which is modified in accordance with DNLR. At the time when a lever operation input from an operation command unit is changed from full stroke to half stroke, if a pump delivery pressure is in a pressure range of a pump absorption torque control region Y where the pump delivery pressure is lower than that in a region X, the reference revolution-speed decrease modification amount computing section 700v computes the modification amount DNLR to be 0, and therefore lowering of a target engine revolution speed with auto-acceleration control is not caused.

摘要翻译： 计算部分计算参考转速降低修改量DNLR; 并且将发动机转速修正增益KNL乘以基准转速下降修正量DNL，然后乘以DNLR，由此基于根据操作先导压力的输入变化计算发动机转速降低修正量DND 与DNLR。 当从操作指令单元输入的杠杆操作从全行程改变为半行程时，如果泵输送压力处于泵吸收转矩控制区域Y的压力范围内，其中泵输送压力低于 区域X，参考转速降低修正量计算部700v将修正量DNLR计算为0，因此不会引起自动加速控制的目标发动机转速的降低。

公开(公告)号：US08266903B2

公开(公告)日：2012-09-18

申请号：US10569490

申请日：2004-08-27

申请人： Yoichi Kowatari ,  Yasushi Arai ,  Kouji Ishikawa ,  Kazunori Nakamura ,  Nobuei Ariga ,  Hideo Karasawa ,  Yuuki Gotou ,  Motoyuki Yabuuchi

发明人： Yoichi Kowatari ,  Yasushi Arai ,  Kouji Ishikawa ,  Kazunori Nakamura ,  Nobuei Ariga ,  Hideo Karasawa ,  Yuuki Gotou ,  Motoyuki Yabuuchi

IPC分类号： F16D31/02

CPC分类号： F04B49/08 ,  E02F9/2246 ,  E02F9/2285 ,  E02F9/2296 ,  F04B17/05 ,  F15B2211/20553 ,  F15B2211/633 ,  F15B2211/6346 ,  F15B2211/6652 ,  F15B2211/851

摘要： An engine lag down control system for construction machinery has a machinery body controller having first, second and third torque control units and a solenoid valve. The first torque control unit controls a torque control valve to a minimum pump torque corresponding to a target number of engine revolutions when a non-operated state of a control device has continued beyond a monitoring time. The second torque control unit controls the torque control valve such that the above-described minimum pump torque is held for a predetermined holding time subsequent to the operation of the control device from the non-operated state. The third torque control unit controls the torque control valve such that from a time point of a lapse of the predetermined holding time, the pump torque is gradually increased on a basis of a predetermined torque increment rate.

摘要翻译： 用于工程机械的发动机滞后控制系统具有具有第一，第二和第三扭矩控制单元和电磁阀的机械主体控制器。 当控制装置的非操作状态持续超过监视时间时，第一扭矩控制单元将转矩控制阀控制为对应于目标发动机转数的最小泵转矩。 第二扭矩控制单元控制扭矩控制阀，使得在控制装置从非操作状态的操作之后，将上述最小泵扭矩保持在预定的保持时间。 第三转矩控制单元控制转矩控制阀，使得从经过预定保持时间的时间点起，泵转矩基于预定转矩增量率逐渐增加。

公开(公告)号：US20100186402A1

公开(公告)日：2010-07-29

申请号：US12445605

申请日：2008-01-30

申请人： Nobuei Ariga ,  Kouji Ishikawa ,  Hideo Karasawa ,  Yasuo Okano ,  Kazunori Nakamura ,  Youichi Kowatari

发明人： Nobuei Ariga ,  Kouji Ishikawa ,  Hideo Karasawa ,  Yasuo Okano ,  Kazunori Nakamura ,  Youichi Kowatari

IPC分类号： F15B21/04

CPC分类号： F15B13/0422 ,  E02F9/2225 ,  E02F9/2235 ,  E02F9/2282 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  F04B17/05 ,  F04B49/08 ,  F15B11/17 ,  F15B2211/20523 ,  F15B2211/20546 ,  F15B2211/20553 ,  F15B2211/26 ,  F15B2211/2656 ,  F15B2211/3116 ,  F15B2211/31576 ,  F15B2211/329 ,  F15B2211/6309 ,  F15B2211/633 ,  F15B2211/6343 ,  F15B2211/6652 ,  F15B2211/6655 ,  F15B2211/7053 ,  F15B2211/7058

摘要： A pump torque control system is capable of preventing hunting due to interference between speed sensing control and control of an engine speed of a prime mover when the temperature of a hydraulic fluid is low.A maximum absorption torque is set in a regulator 31 that controls displacement volumes of hydraulic pumps 2 and 3 based on a deviation between target and actual engine speeds of a prime mover 1. A second modification factor calculating section 45 and a control gain modifying section 49, which are included in a controller 23 that performs speed sensing control to ensure that the maximum absorption torque of the hydraulic pumps 2 and 3 is reduced, change a control gain of the speed sensing control based on a value detected by the hydraulic temperature sensor 34 to ensure that the control gain is reduced as the temperature of the hydraulic fluid is reduced.

摘要翻译： 泵扭矩控制系统能够防止在液压流体的温度低时速度感测控制和原动机的发动机转速的控制之间的干扰。 在基于原动机1的目标和实际发动机转速之间的偏差来控制液压泵2和3的排量的调节器31中设定最大吸收扭矩。第二修正因子计算部45和控制增益修正部49 ，其包括在执行速度感测控制以确保液压泵2和3的最大吸收扭矩减小的控制器23中，基于由液压温度传感器34检测到的值来改变速度感测控制的控制增益 以确保当液压流体的温度降低时控制增益降低。

公开(公告)号：US20080245065A1

公开(公告)日：2008-10-09

申请号：US10585983

申请日：2005-10-05

申请人： Kazunori Nakamura ,  Kouji Ishikawa ,  Nobuei Ariga ,  Hideo Karasawa ,  Yasuo Okano

发明人： Kazunori Nakamura ,  Kouji Ishikawa ,  Nobuei Ariga ,  Hideo Karasawa ,  Yasuo Okano

IPC分类号： F16D31/02

CPC分类号： F02D29/04 ,  E02F9/2235 ,  E02F9/2242 ,  E02F9/2246 ,  E02F9/2292 ,  E02F9/2296 ,  F02D31/001 ,  F02D41/021 ,  F04B49/065

摘要： A computing section computes a reference revolution-speed decrease modification amount DNLR; and multiplies an engine revolution speed modification gain KNL by a reference revolution-speed decrease modification amount DNL and then DNLR, to thereby compute an engine revolution-speed decrease modification amount DND based on input change of an operation pilot pressure, which is modified in accordance with DNLR. At the time when a lever operation input from an operation command unit is changed from full stroke to half stroke, if a pump delivery pressure is in a pressure range of a pump absorption torque control region Y where the pump delivery pressure is lower than that in a region X, the reference revolution-speed decrease modification amount computing section 700v computes the modification amount DNLR to be 0, and therefore lowering of a target engine revolution speed with auto-acceleration control is not caused.

摘要翻译： 计算部分计算参考转速降低修正量DNLR; 并且将发动机转速修正增益KNL乘以基准转速下降修正量DNL，然后乘以DNLR，由此基于根据操作先导压力的输入变化计算发动机转速降低修正量DND 与DNLR。 当从操作指令单元输入的杠杆操作从全行程改变为半行程时，如果泵输送压力处于泵吸收转矩控制区域Y的压力范围内，其中泵输送压力低于 区域X，参考转速降低修正量计算部700v将修正量DNLR计算为0，因此不会引起使用自动加速控制的目标发动机转速的降低。