公开(公告)号：US20210348363A1

公开(公告)日：2021-11-11

申请号：US17283039

申请日：2019-11-12

Applicant: KOMATSU LTD.

Inventor： Kenichi YAMADA ,  Shogo MIYAZAKI

IPC: E02F9/20

Abstract: A control device of a work vehicle includes a required output torque determination unit that determines a required output torque of the power transmission device based on an operation amount of the operation device and a traveling speed of the work vehicle, a traveling load estimation unit that estimates a traveling load torque related to a traveling load on the work vehicle, a required output torque correction unit that corrects the required output torque such that the required output torque is included in an allowable output torque range including an estimated traveling load torque, and a drive source control unit that outputs a control signal for the drive source based on a corrected required output torque.

公开(公告)号：US20170044736A1

公开(公告)日：2017-02-16

申请号：US14904487

申请日：2014-12-10

Applicant: KOMATSU LTD.

Inventor： Shunsuke MIYAMOTO ,  Kenichi YAMADA ,  Kaoru YASUDA

IPC: E02F9/20 ,  B60K6/365 ,  B60W20/00 ,  B60L15/20 ,  B60W10/08 ,  B60W10/10 ,  E02F3/28 ,  B60K6/54

CPC classification number: E02F9/207 ,  B60K6/365 ,  B60K6/387 ,  B60K6/44 ,  B60K6/445 ,  B60K6/54 ,  B60K6/547 ,  B60K2006/381 ,  B60L11/005 ,  B60L11/123 ,  B60L11/14 ,  B60L15/2054 ,  B60L2200/40 ,  B60L2240/12 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/441 ,  B60L2240/486 ,  B60L2250/24 ,  B60L2250/26 ,  B60W10/08 ,  B60W10/10 ,  B60W20/00 ,  B60W2300/17 ,  B60W2510/088 ,  B60W2710/083 ,  B60Y2200/415 ,  E02F3/283 ,  E02F3/3411 ,  E02F9/2004 ,  E02F9/202 ,  E02F9/2075 ,  E02F9/2079 ,  F16H3/728 ,  H02P5/747 ,  Y02P90/60 ,  Y02T10/6217 ,  Y02T10/6239 ,  Y02T10/645 ,  Y02T10/7022 ,  Y02T10/7077 ,  Y02T10/72 ,  Y02T10/7275 ,  Y10S903/903

Abstract: A power transmission device of a work vehicle has an input shaft, an output shaft, a gear mechanism, and an electric motor. The gear mechanism has a planetary gear mechanism and transmits the rotation of the input shaft to the output shaft. The electric motor is connected to a rotating element of the planetary gear mechanism. The power transmission device is configured to change the rotation speed ratio of the output shaft with respect to the input shaft by changing the rotation speed of the electric motor. A control unit has a target torque determination unit and a target torque correcting unit. The target torque determination unit determines a target torque of the electric motor. The target torque correcting unit corrects the target torque according to a correction torque based on a moment of inertia of the electric motor.

Abstract translation: 工作车辆的动力传递装置具有输入轴，输出轴，齿轮机构和电动马达。 齿轮机构具有行星齿轮机构，并将输入轴的旋转传递到输出轴。 电动机连接到行星齿轮机构的旋转元件。 动力传递装置通过改变电动机的转速来改变输出轴相对于输入轴的转速比。 控制单元具有目标扭矩确定单元和目标扭矩校正单元。 目标转矩确定单元确定电动机的目标转矩。 目标扭矩校正单元根据基于电动机的惯性矩的校正转矩来校正目标转矩。

公开(公告)号：US20160097186A1

公开(公告)日：2016-04-07

申请号：US14892703

申请日：2014-12-17

Applicant: KOMATSU LTD.

Inventor： Kenichi YAMADA ,  Shunsuke MIYAMOTO

IPC: E02F9/22 ,  B60W10/30 ,  E02F9/20 ,  B60W20/10 ,  B60W10/08 ,  B60W10/06 ,  B60W10/105

CPC classification number: E02F9/2246 ,  B60K6/28 ,  B60K6/365 ,  B60K6/387 ,  B60K6/445 ,  B60K6/50 ,  B60K6/547 ,  B60K25/02 ,  B60K2006/381 ,  B60W10/06 ,  B60W10/08 ,  B60W10/105 ,  B60W10/30 ,  B60W20/00 ,  B60W20/10 ,  B60W2300/17 ,  B60W2510/0638 ,  B60W2510/0666 ,  B60W2510/1035 ,  B60W2510/244 ,  B60W2510/305 ,  B60W2520/10 ,  B60W2520/12 ,  B60W2540/10 ,  B60W2540/16 ,  B60W2710/0666 ,  B60W2710/083 ,  B60W2710/1005 ,  B60W2710/1022 ,  B60W2710/105 ,  B60W2710/1061 ,  B60W2710/305 ,  E02F9/2066 ,  E02F9/2075 ,  E02F9/2079 ,  E02F9/2253 ,  E02F9/2289 ,  E02F9/2292 ,  E02F9/2296 ,  F02D29/04 ,  Y02T10/6239 ,  Y10S903/93

Abstract: A work implement requirement determination unit of a work vehicle determines a work implement required power based on the operation amount of a work implement operating member and the work implement pump pressure. A transmission requirement determination unit determines a transmission required power based on the vehicle speed and the operation amount of the accelerator operating member. When the sum of the work implement required power and the transmission required power is greater than a first distributable power that a predetermined preferential distribution power subtracted from a load upper limit power of the engine leaves, a distribution ratio determination unit allocates the smaller of a transmission compensation power and the transmission required power to a power transmission device and distributes the remainder of the first distributable power to the work implement pump and to a power transmission device.

Abstract translation: 作业车辆的作业要求确定单元基于作业工具操作构件的操作量和作业工具泵的压力来确定作业工具所需的动力。 发送需求确定单元基于车速和加速器操作构件的操作量确定发送所需电力。 当工作实现所需功率和传输所需功率的总和大于从发动机的负载上限功率所减去的预定优先分配功率的第一可分配功率时，分配比率确定单元分配较小的传输 补偿功率和对功率传输装置的传输所需的功率，并将第一可分配功率的剩余部分分配到工作装置泵和功率传输装置。