公开(公告)号：EP2202399A1

公开(公告)日：2010-06-30

申请号：EP08842404.9

申请日：2008-10-09

申请人： Komatsu Ltd.

发明人： NAKAGAWA, Tomohiro ,  YAMAMOTO, Shigeru ,  SHIMADA, Kenjiro

IPC分类号： F02D29/00 ,  E02F9/20

CPC分类号： E02F9/2066 ,  B60W30/1882 ,  B60W30/1888 ,  B60W2510/0233 ,  B60W2510/0275 ,  B60W2710/0677 ,  B60Y2200/25 ,  B60Y2200/41 ,  B60Y2400/426 ,  E02F9/2246 ,  F02D29/00

摘要： It is an object of the present invention to solve a problem to be caused when a torqcon of a work vehicle is in a nearly/completely stalled state. A storage unit (22) of a controller (20) stores a preliminarily set speed ratio threshold ec. The speed ratio threshold ec is a speed ratio at which a torque ratio t of a torque converter (4) is greater than a torque ratio t1 corresponding to a maximum efficiency η max. Engine output reduction portion (23) of the controller (20) controls an output Pe of an engine (3) to be reduced when a computed speed ratio e is equal to or less than the speed ratio threshold ec.

摘要翻译： 本发明的目的是解决当工作车辆的torqcon处于几乎/完全失速状态时所引起的问题。 控制器（20）的存储单元（22）存储预设速度阈值ec。 变速比阈值ec是变矩器（4）的转矩比t大于与最大效率·最大值相对应的转矩比t1的变速比。 当计算出的速度比e等于或小于速比阈值ec时，控制器（20）的发动机输出减少部分（23）控制发动机（3）的输出Pe减小。

公开(公告)号：EP2202430B1

公开(公告)日：2012-05-30

申请号：EP08842764.6

申请日：2008-10-07

申请人： Komatsu Ltd.

发明人： NAKAGAWA, Tomohiro ,  YAMAMOTO, Shigeru ,  SHIMADA, Kenjiro

IPC分类号： F16H61/14 ,  E02F9/20 ,  E02F9/22 ,  F16H61/04

CPC分类号： F16H61/143 ,  E02F9/2246 ,  E02F9/2253 ,  E02F9/2296 ,  F16H59/48 ,  F16H61/0437 ,  F16H2061/146 ,  Y10T74/19251 ,  Y10T477/638 ,  Y10T477/755

摘要： Load increase rate computation portion (21) computes a increase rate (²) of a load acting on a work vehicle 1 (Step S102). The transmission control portion (22) shifts a high-speed gear (second speed) down to a low-speed gear (first speed) with producing a lock-up state that a lock-up clutch (4a) is engaged when the load increase rate (²) is less than a load increase rate threshold (²c) in shifting the high-speed gear (second speed) down to the low-speed gear (first speed) (Steps S103, S105). Additionally, the transmission control portion (22) shifts the high-speed gear (second speed) down to the low-speed gear (first speed) with producing a torqcon state that the lock-up clutch (4a) is disengaged when the load increase rate (²) is equal to or greater than the load increase rate threshold (²c) in shifting the high-speed gear (second speed) down to the low-speed gear (first speed) (Steps S103, S104).

公开(公告)号：EP2187160A1

公开(公告)日：2010-05-19

申请号：EP08830843.2

申请日：2008-09-04

申请人： Komatsu Ltd.

发明人： SUZUKI, Kazuyuki ,  OZAKI, Taira ,  OONISHI, Akihito ,  YAMAMOTO, Shigeru

IPC分类号： F28F9/26 ,  F01P3/18 ,  F28F9/00 ,  F28F9/02

CPC分类号： F28F9/262 ,  F01P3/18 ,  F01P2003/185 ,  F28D1/05366 ,  F28F9/002 ,  F28F9/02 ,  F28F9/0231 ,  F28F2265/18

摘要： In a radiator (5) in that core units (31 to 33) are arranged in parallel to each other on a lower main tank (16), and an upper main tank (15) is arranged at an offset position relative to the lower main tank (16) in the plan view, the upper main tank (15) is arranged at the substantially same height as upper auxiliary tanks (35) in the core units (31 to 33), and the side surface of each upper auxiliary tank (35) and the side surface of the upper main tank (15) are connected to each other by a coolant water conduit pipe (60). A coolant water inlet is arranged on the lower surface side of the upper main tank (15).

摘要翻译： 在散热器（5）中，芯体单元（31〜33）在下主箱（16）上彼此平行地布置，上主箱（15）相对于下主体 （16），上主箱（15）设置在与芯单元（31〜33）中的上辅助箱（35）大致相同的高度，并且每个上辅助箱（ 35）和上主箱（15）的侧面通过冷却水导管（60）相互连接。 冷却水入口设置在上主箱（15）的下表面侧。

公开(公告)号：EP2187081A1

公开(公告)日：2010-05-19

申请号：EP08830140.3

申请日：2008-09-03

申请人： Komatsu Ltd.

发明人： KURE, Kazuki ,  SUZUKI, Kazuyuki ,  YAMAMOTO, Shigeru

IPC分类号： F16D65/853 ,  B60T5/00 ,  F16D67/04

CPC分类号： B60T5/00 ,  F16D65/78 ,  F16D2065/783

摘要： There are provided a work vehicle and a method for controlling the work vehicle, capable of minimizing the loss of driving force in a braking device and suppressing the occurrence of overheating. The work vehicle 1 comprises a braking device (5a), (5b), a lubricant feeding section (6), and a controlling section (7). The controlling section (7) is able to execute a first control for controlling, based on a temperature of the brake disc, the amount of lubricant fed to the braking device (5a), (5b). The controlling section (7) sets the amount of supplied lubricant to a predetermined first feed amount when the braking device (5a), (5b) is in a braking state, and makes a decision in the first control, based on the temperature of the brake disc, to change the amount of supplied lubricant from the first feed amount to a second feed amount, which is smaller than the first feed amount, when the braking device (5a), (5b) is switched from the braking state to a non-braking state.

摘要翻译： 提供了一种作业车辆和用于控制作业车辆的方法，其能够最小化制动装置中的驱动力的损失并抑制过热的发生。 工作车辆1包括制动装置（5a），（5b），润滑剂供给部（6）和控制部（7）。 控制部（7）能够执行用于基于制动盘的温度来控制供给到制动装置（5a），（5b）的润滑剂的量的第一控制。 当制动装置（5a），（5b）处于制动状态时，控制部（7）将供给的润滑剂的量设定为规定的第一进给量，并且基于第一控制的温度进行第一控制 制动盘，当制动装置（5a），（5b）从制动状态切换到非制动盘时，将供给的润滑剂的量从第一进给量改变为小于第一进给量的第二进给量， 制动状态。

公开(公告)号：EP2161425A1

公开(公告)日：2010-03-10

申请号：EP08752955.8

申请日：2008-05-19

申请人： Komatsu Ltd.

发明人： SHINTANI, Satoru ,  YAMAMOTO, Shigeru ,  SUZUKI, Kazuyuki ,  TAKAURA, Takeshi ,  NAKAGAWA, Tomohiro

IPC分类号： F01P7/04 ,  F01P5/04 ,  F02D29/00

CPC分类号： E02F9/2025 ,  F01P7/044 ,  F01P7/08 ,  F02D29/02 ,  F02D29/04

摘要： A work vehicle is provided with an engine, a traveling device, driven by driving force from the engine, that causes the vehicle to travel, a first hydraulic pump driven by the driving force from the engine, that discharges hydraulic oil, and a cooling device driven by the hydraulic oil supplied by the first hydraulic pump, that cools the engine, and a control unit. The control unit performs normal cooling control and cooling suppression control for suppressing operation of the cooling device to be less than the normal cooling control. The control unit performs the cooling suppression control when one of a first mode to fourth mode required to increase the engine speed is performed.

摘要翻译： 作业车辆具备发动机，由来自发动机的驱动力驱动的使车辆行驶的行驶装置，由来自发动机的驱动力驱动的第一液压泵，排出工作油的冷却装置 由第一液压泵供应的液压油驱动，冷却发动机，以及控制单元。 控制单元执行用于将冷却装置的操作抑制为小于正常冷却控制的正常冷却控制和冷却抑制控制。 当执行增加发动机速度所需的第一模式至第四模式中的一个时，控制单元执行冷却抑制控制。

公开(公告)号：EP2202430A1

公开(公告)日：2010-06-30

申请号：EP08842764.6

申请日：2008-10-07

申请人： Komatsu Ltd.

发明人： NAKAGAWA, Tomohiro ,  YAMAMOTO, Shigeru ,  SHIMADA, Kenjiro

IPC分类号： F16H61/14 ,  F16H61/04 ,  F16H59/48

CPC分类号： F16H61/143 ,  E02F9/2246 ,  E02F9/2253 ,  E02F9/2296 ,  F16H59/48 ,  F16H61/0437 ,  F16H2061/146 ,  Y10T74/19251 ,  Y10T477/638 ,  Y10T477/755

摘要： Load increase rate computation portion (21) computes a increase rate (β) of a load acting on a work vehicle 1 (Step S102). The transmission control portion (22) shifts a high-speed gear (second speed) down to a low-speed gear (first speed) with producing a lock-up state that a lock-up clutch (4a) is engaged when the load increase rate (β) is less than a load increase rate threshold (βc) in shifting the high-speed gear (second speed) down to the low-speed gear (first speed) (Steps S103, S105). Additionally, the transmission control portion (22) shifts the high-speed gear (second speed) down to the low-speed gear (first speed) with producing a torqcon state that the lock-up clutch (4a) is disengaged when the load increase rate (β) is equal to or greater than the load increase rate threshold (βc) in shifting the high-speed gear (second speed) down to the low-speed gear (first speed) (Steps S103, S104).

摘要翻译： 负载增加率计算部（21）计算作用在作业车辆1上的负载的增加率（²）（步骤S102）。 变速器控制部22在负载增加时产生锁止离合器（4a）接合的锁止状态，将高速齿轮（第二速度）向下移动到低速档（第一速度） 速度（²）小于将高速档（第二速度）下降到低速档（第一速度）时的负载增加率阈值（²c）（步骤S103，S105）。 此外，变速器控制部22通过产生当负载增加时锁止离合器（4a）脱离的扭矩状态而将高速齿轮（第二速度）向下移动到低速齿轮（第一速度） 速度（²）等于或大于将高速档（第二速度）下降到低速档（第一速度）时的负载增加率阈值（²c）（步骤S103，S104）。

公开(公告)号：EP2037127A1

公开(公告)日：2009-03-18

申请号：EP07740964.7

申请日：2007-04-04

申请人： KOMATSU LTD.

发明人： YAMAMOTO, Shigeru ,  NAKAGAWA, Tomohiro ,  SHINTANI, Satoru

IPC分类号： F15B11/024 ,  E02F9/22

CPC分类号： E02F9/2228 ,  E02F3/844 ,  E02F9/2203 ,  E02F9/2285 ,  E02F9/2292 ,  F15B2211/3127 ,  F15B2211/6346 ,  F15B2211/7053 ,  F15B2211/7107

摘要： A tank 16 and a main hydraulic pump 17 are connected to head side actuator chambers 13 and rod side actuator chambers 14 of hydraulic actuators 12 via conduits 21, 22. A direction control valve 18 and a quick drop valve 36 are connected to the conduits 21, 22. A hydraulic circuit is provided with an electromagnetic switch valve 42, which switches the quick drop valve 36 from a non-quick drop position 37 to a quick drop position 38. When switching the direction control valve 18 from a neutral position 23 to a lowering operation position 25, if the manipulation speed of a manipulation lever 33 exceeds a criteria speed, an excitation signal is output from a control device 32 to an electromagnetic switch valve 42 to quickly drop a blade 11, and the quick drop valve 36 is switched from the non-quick drop position 37 to the quick drop position 38.

摘要翻译： 油箱16和主液压泵17经由导管21,22与液压致动器12的头侧致动器室13和杆侧致动器室14连接。方向控制阀18和快速下降阀36连接到管道21 液压回路设置有电磁切换阀42，其将快速下降阀36从非快速下降位置37切换到快速下降位置38.当将方向控制阀18从中性位置23切换到 降低操作位置25，如果操作杆33的操纵速度超过标准速度，则将激励信号从控制装置32输出到电磁切换阀42，以迅速地降低叶片11，并且快速下降阀36为 从非快速下落位置37切换到快速下落位置38。

公开(公告)号：EP2161480A1

公开(公告)日：2010-03-10

申请号：EP08765802.7

申请日：2008-06-24

申请人： Komatsu Ltd.

发明人： KURE, Kazuki ,  SUZUKI, Kazuyuki ,  YAMAMOTO, Shigeru

IPC分类号： F16H61/00 ,  F16H59/42 ,  F16H59/54 ,  F16H59/72 ,  F16H59/74 ,  F16H61/682

CPC分类号： F16H59/72 ,  B60K17/28 ,  B60Y2200/41 ,  E02F9/2242 ,  F16H59/42 ,  F16H59/54 ,  F16H59/74 ,  F16H61/0025

摘要： The present invention provides a hydraulic device in which loss due to unnecessary supply of hydraulic oil is reduced. A hydraulic device (10) has a first pump (21), a second pump (22), an operating state detector (120) for detecting an operating state, a directional control valve (122) for connecting the second pump (22) to either a first hydraulic oil line (P1) or a second hydraulic oil line (P2), and a switching controller (121) for performing, based on the operating state detected by the operating state detector (120), a switching control in which the directional control valve (122) is controlled and the second pump (22) is connected either to the first hydraulic oil line (P1) or to the second hydraulic oil line (P2). The switching controller (121) inhibits switching of the connection of the second pump (22) when the detected operating state is such that at least one of the clutches of a multi-stage transmission (1) and a steering device (3) is in a state transition or at least one of the brakes of the steering device (3) is being operated.

摘要翻译： 本发明提供了一种液压装置，其中由于不必要的液压油的供给而损失。 液压装置（10）具有第一泵（21），第二泵（22），用于检测运行状态的运行状态检测器（120），用于将第二泵（22）连接到 第一液压油管线（P1）或第二液压油管路（P2）以及用于根据由操作状态检测器（120）检测到的操作状态执行切换控制的开关控制器（121），其中， 方向控制阀（122）被控制，第二泵（22）连接到第一液压油管路（P1）或第二液压油管路（P2）。 当检测到的操作状态使得多级变速器（1）和转向装置（3）中的至少一个离合器处于位置时，切换控制器（121）禁止第二泵（22）的连接的切换 正在操作转向装置（3）的状态转换或至少一个制动器。