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公开(公告)号：US08429904B2
公开(公告)日：2013-04-30
申请号：US12818433
申请日：2010-06-18
申请人： Kazuhiro Shibamori , Kazunori Nakamura , Kouji Ishikawa , Yoichi Kowatari , Hidenobu Tsukada , Shohei Kamiya , Masanori Ezawa
发明人： Kazuhiro Shibamori , Kazunori Nakamura , Kouji Ishikawa , Yoichi Kowatari , Hidenobu Tsukada , Shohei Kamiya , Masanori Ezawa
CPC分类号： F01N3/023 , F01N3/0232 , F01N9/002 , F01N2900/1606 , F02D41/029 , F02D2041/228 , F02D2200/0812 , F02D2200/701 , F02D2200/702 , Y02T10/47
摘要： Disclosed is a working machine capable of preventing damage to a filter due to excessive accumulation of particulate matter (PM), even under a situation that requires, prior to compulsory regeneration of the filter, moving the machine to a place in which to perform the regeneration work. The working machine that includes an exhaust treatment device 4 having a filter 6 to trap the PM, a regeneration control section 31 for compulsorily regenerating the filter, and a regeneration instruction device 23 for instructing the regeneration control section 31 to start the compulsory regeneration. Further, when a deposition quantity estimating element determines that an actual PM deposition quantity has reached a deposition alarm level, an alarm device 12 notifies an operator that the time has come to start the movement of the working machine to the place of regeneration.
摘要翻译： 公开了一种能够防止由于颗粒物质（PM）的过度积聚而导致的过滤器的损坏的作业机械，即使在强制再生过滤器之前，也需要将机器移动到进行再生的地方 工作。 包括具有用于捕集PM的过滤器6的废气处理装置4的工作机，用于强制再生过滤器的再生控制部31，以及用于指示再生控制部31开始强制再生的再生指示装置23。 此外，当沉积量估计元件确定实际的PM沉积量已经达到沉积报警水平时，报警装置12通知操作者现在是开始将工作机器移动到再生地点的时间。
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公开(公告)号：US20120163996A1
公开(公告)日：2012-06-28
申请号：US13393758
申请日：2010-09-02
CPC分类号： F04B49/08 , F01N3/021 , F01N3/023 , F01N2900/08 , F02D41/029 , F02D2041/026 , F04B17/05 , F04B2205/05
摘要： A hydraulic drive system for a hydraulic working machine sets a delivery pressure at a preset value upon raising a temperature of exhaust gas to a temperature needed for combustion of particulate matter by increasing a load to be applied to an engine. In a non-operation state, a variable restrictor is controlled by a controller and a delivery pressure control valve to increase a delivery pressure of a variable displacement hydraulic pump, so that the load is increased to raise the temperature of exhaust gas to the temperature needed for the particulate matter combustion. At this time, the controller controls the delivery pressure control valve such that a delivery pressure to be detected by a delivery pressure sensor will conform with a preset reference delivery pressure. The reference delivery pressure is set to a minimum pressure that can provide the exhaust gas with combustion heat.
摘要翻译： 液压工程机械的液压驱动系统通过增加施加到发动机的负荷将排气温度提高到颗粒物质燃烧所需的温度，将输送压力设定在预定值。 在非操作状态下，可变节流器由控制器和输送压力控制阀控制，以增加可变排量液压泵的输送压力，从而增加负载以将排气温度提高到所需温度 用于颗粒物燃烧。 此时，控制器控制输送压力控制阀，使得由输送压力传感器检测的输送压力将与预设的参考输送压力一致。 参考输送压力被设定为可以向废气提供燃烧热的最小压力。
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公开(公告)号：US08646255B2
公开(公告)日：2014-02-11
申请号：US12578702
申请日：2009-10-14
申请人： Hidenobu Tsukada , Kouji Ishikawa , Yasushi Arai , Shohei Kamiya
发明人： Hidenobu Tsukada , Kouji Ishikawa , Yasushi Arai , Shohei Kamiya
CPC分类号： E02F9/0866 , E02F9/00 , F01N9/002 , Y02T10/47
摘要： An exhaust gas purification system for an engineering machine is capable of avoiding decreases in working efficiency during regeneration control by burning off a deposit of particulate matter from a filter efficiently during a work pause time. An operating section 17 of a display monitor 16 is used to set a work pause time and a work pause switch 13 notifies a vehicle body control unit 21 that the hydraulic excavator has entered a work pause state. In response, the vehicle body control unit 21 calculates the time required for a regenerating device to burn off the current amount of particulate matter deposited on the filter, and when the calculated time is longer than the preset work pause time, a regeneration controller 4a of an engine control unit 4 is activated, and a solenoid control valve 15 is switched to a closed position during the preset work pause time.
摘要翻译： 用于工程机械的废气净化系统能够通过在工作暂停时间期间有效地从过滤器中排除颗粒物质的沉积而避免再生控制期间的工作效率的降低。 显示监视器16的操作部17用于设定工作暂停时间，工作暂停开关13通知车体控制部21，液压挖掘机已进入作业暂停状态。 作为响应，车身控制单元21计算再生装置消除沉积在过滤器上的颗粒物质的当前量所需的时间，并且当计算出的时间比预设的工作暂停时间长时，再生控制器4a 发动机控制单元4被启动，并且在预设的工作暂停时间期间，电磁控制阀15切换到关闭位置。
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公开(公告)号：US20110113766A1
公开(公告)日：2011-05-19
申请号：US13003153
申请日：2009-07-08
IPC分类号： F01N3/023
CPC分类号： F02D41/029 , B60R1/00 , B60R2300/8066 , F01N9/002 , F01N11/00 , F02D41/0245 , F02D2041/228 , Y02T10/47
摘要： An exhaust gas post-treatment system for a vehicle is provided, which in the course of regeneration ascertains whether or not there is any object approaching a body of the vehicle from behind. A filter is arranged in an exhaust passage of an engine to trap PM therein. A trapped and deposited PM amount sensing device senses a deposited amount of PM deposited in the filter. A fuel injector burns and removes PM deposited in the filter to conduct regeneration of the filter. A rearward monitoring camera monitors a scene rearward of a vehicle body. A display module displays monitoring information from the rearward monitoring camera, and a controller having a regeneration processing unit executes control processing to actuate the fuel injector and to perform regeneration. The controller includes a display continuation processing unit for executing control processing such that during the regeneration by the fuel injector, the monitoring information from the rearward monitoring camera is continuously displayed on a display screen of the display module.
摘要翻译： 提供了一种用于车辆的废气后处理系统，其在再生过程中确定是否存在从后方接近车体的任何物体。 在发动机的排气通道中布置有过滤器以将PM捕集在其中。 捕获和沉积的PM量感测装置感测沉积在过滤器中的PM的沉积量。 燃料喷射器燃烧并去除沉积在过滤器中的PM，以进行过滤器的再生。 后方监视摄像机监视车身后方的场景。 显示模块显示来自后方监视摄像机的监视信息，并且具有再生处理单元的控制器执行控制处理以致动燃料喷射器并进行再生。 控制器包括显示继续处理单元，用于执行控制处理，使得在由燃料喷射器再生期间，来自后监视摄像机的监视信息被连续地显示在显示模块的显示屏幕上。
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公开(公告)号：US08881506B2
公开(公告)日：2014-11-11
申请号：US13393758
申请日：2010-09-02
CPC分类号： F04B49/08 , F01N3/021 , F01N3/023 , F01N2900/08 , F02D41/029 , F02D2041/026 , F04B17/05 , F04B2205/05
摘要： A hydraulic drive system for a hydraulic working machine sets a delivery pressure at a preset value upon raising a temperature of exhaust gas to a temperature needed for combustion of particulate matter by increasing a load to be applied to an engine. In a non-operation state, a variable restrictor is controlled by a controller and a delivery pressure control valve to increase a delivery pressure of a variable displacement hydraulic pump, so that the load is increased to raise the temperature of exhaust gas to the temperature needed for the particulate matter combustion. At this time, the controller controls the delivery pressure control valve such that a delivery pressure to be detected by a delivery pressure sensor will conform with a preset reference delivery pressure. The reference delivery pressure is set to a minimum pressure that can provide the exhaust gas with combustion heat.
摘要翻译： 液压工程机械的液压驱动系统通过增加施加到发动机的负荷将排气温度提高到颗粒物质燃烧所需的温度，将输送压力设定在预定值。 在非操作状态下，可变节流器由控制器和输送压力控制阀控制，以增加可变排量液压泵的输送压力，从而增加负载以将排气温度提高到所需温度 用于颗粒物燃烧。 此时，控制器控制输送压力控制阀，使得由输送压力传感器检测的输送压力将与预设的参考输送压力一致。 参考输送压力被设定为可以向废气提供燃烧热的最小压力。
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公开(公告)号：US20120279203A1
公开(公告)日：2012-11-08
申请号：US13393871
申请日：2011-01-27
CPC分类号： F02D41/0245 , B01D53/944 , B01D53/9495 , B01D2258/012 , E02F9/0866 , E02F9/2066 , E02F9/2235 , E02F9/2296 , F01N3/023 , F01N9/002 , F01N2560/06 , F01N2560/08 , F01N2590/08 , F02D29/04 , F02D41/029 , F02D41/1448 , F02D2041/026 , Y02T10/26
摘要： When an output value of an exhaust resistance sensor 34 has reached or exceeded a set value ΔPa, a controller 20 executes recovery control of a filter of an exhaust gas purification device 32 after conducting exhaust temperature increasing control by operating a pump discharge pressure increasing device (solenoid proportional valve) 38 so that exhaust gas temperature as an output value of an exhaust temperature sensor 33 reaches a preset value Ta. Thus, the recovery process of the exhaust gas purification device can be executed with reliability by increasing the exhaust gas temperature irrespective of the operating environment and the fuel consumption can be kept at a minimum necessary level.
摘要翻译： 当排气阻力传感器34的输出值达到或超过设定值＆Dgr; Pa时，控制器20通过操作泵排出压力增加来执行废气升温控制之后执行废气净化装置32的过滤器的恢复控制 装置（电磁比例阀）38，使得作为排气温度传感器33的输出值的废气温度达到预设值Ta。 因此，排气净化装置的回收处理可以通过增加排气温度而可靠地执行，而与操作环境无关，并且可以将燃料消耗保持在最低必要水平。
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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）。
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8.发明授权Method and device for controlling pump torque for hydraulic construction machine 有权液压施工机械泵扭矩控制方法及装置公开(公告)号：US08162618B2
公开(公告)日：2012-04-24
申请号：US10507888
申请日：2003-11-18
CPC分类号： F04B49/002 , E02F9/2235 , E02F9/226 , E02F9/2292 , E02F9/2296 , F04B17/05 , F04B23/06 , F04B49/065 , F04B49/08
摘要： A current load rate of an engine 10 is computed and a maximum absorption torque of at least one hydraulic pump 1, 2 is controlled so that the load rate is held at a target value. Engine stalling can be prevented by decreasing the maximum absorption torque of the hydraulic pump under a high-load condition. When an engine output lowers due to environmental changes, the use of poor fuel or other reasons, the maximum absorption torque of the hydraulic pump can be decreased without a lowering of the engine revolution speed. Further, the present invention is adaptable for any kinds of factors causing a lowering of the engine output, such as those factors that cannot be predicted in advance or are difficult to detect by sensors. In addition, because of no necessity of sensors, such as environment sensors, the manufacturing cost can be reduced.
摘要翻译： 计算发动机10的当前负载率，并且控制至少一个液压泵1,2的最大吸收转矩，使得负载率保持在目标值。 通过在高负载条件下减小液压泵的最大吸收扭矩可以防止发动机失速。 当发动机输出由于环境变化而降低时，使用不良燃料或其他原因，可以降低液压泵的最大吸收扭矩而不降低发动机转速。 此外，本发明适用于导致发动机输出降低的各种因素，例如预先不能预测或难以被传感器检测的那些因素。 此外，由于不需要诸如环境传感器的传感器，因此可以降低制造成本。
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9.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：US07255088B2
公开(公告)日：2007-08-14
申请号：US10527418
申请日：2004-06-24
CPC分类号： F02D31/007 , F02D41/12
摘要： An engine control system includes pressure sensors (73, 74), position sensors (75, 76), pressure sensors (77, 78), a target revolution speed modification value computing unit (90), and a modification value adder (70r). A target revolution speed NR2 for use in control is computed based on changes of status variables such that the target revolution speed NR2 increases from the target revolution speed NR1 applied from an input unit (71), and then moderately returns to the target revolution speed NR1. In accordance with the computed target revolution speed NR2 for use in control, a target fuel injection amount FN1 is computed and a fuel injection amount is controlled. As a result, a drop of an engine revolution speed attributable to an abrupt increase of an engine load can be suppressed without sacrificing the work efficiency, and lowering of durability caused by an excessive increase of the engine revolution speed can be prevented.
摘要翻译： 发动机控制系统包括压力传感器（73,74），位置传感器（75,76），压力传感器（77,78），目标转速修正值计算单元（90）和修正值加法器（70r） 。 根据状态变量的变化，计算目标转速NR2，使得目标转速NR2从从输入单元（71）施加的目标转速NR 1增加，然后适度返回到目标 转速NR 1。 根据用于控制的计算出的目标转速NR2，计算目标燃料喷射量FN1，并控制燃料喷射量。 结果，可以在不牺牲工作效率的情况下抑制由于发动机负载突然增加引起的发动机转速的下降，并且可以防止由于发动机转速过大而导致的耐久性降低。
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