公开(公告)号：US20240183126A1

公开(公告)日：2024-06-06

申请号：US18285266

申请日：2022-06-15

Applicant: Komatsu Ltd.

Inventor： Satoshi Ito ,  Shota Nakamura

IPC: E02F9/20 ,  E02F9/22 ,  E02F9/26

CPC classification number: E02F9/2033 ,  E02F9/2066 ,  E02F9/2228 ,  E02F9/2235 ,  E02F9/2296 ,  E02F9/268

Abstract: A work machine having working equipment includes a power source that outputs a driving force for operating the working equipment, a controller, and a solenoid valve controlled by the controller. When it is determined that an abnormality has occurred in the power supply circuit connecting the controller and the solenoid valve, the controller outputs a command for controlling the power source so as to limit an operation of the working equipment.

公开(公告)号：US20180171592A1

公开(公告)日：2018-06-21

申请号：US15579644

申请日：2016-06-08

Applicant: DOOSAN INFRACORE CO., LTD.

Inventor： Hong Cheol YUN ,  Byoung Heon PARK

IPC: E02F9/22 ,  E02F9/20 ,  F02D35/02

CPC classification number: E02F9/2246 ,  E02F9/20 ,  E02F9/2004 ,  E02F9/2066 ,  E02F9/207 ,  E02F9/2217 ,  E02F9/2228 ,  E02F9/2285 ,  E02F9/2292 ,  F02D35/02

Abstract: The present invention relates to a control device and control method for a construction machine. A control device and control method for a construction machine according to the embodiments of the present invention can determine a need for the operation of the alternator by taking into account required electrical energy and the current charge amount of a battery when auxiliary power is received from the auxiliary power device, and can thus decrease an engine RPM in a situation in which power generation is not required, thereby improving the fuel efficiency of a construction machine.

公开(公告)号：US20180093670A1

公开(公告)日：2018-04-05

申请号：US15285771

申请日：2016-10-05

Applicant: Caterpillar Inc.

Inventor： Jeremy Sharp ,  Suman Goli ,  Mark E. Rettig

IPC: B60W30/188 ,  B60W10/06 ,  B60W10/10 ,  E02F9/20

CPC classification number: B60W30/1882 ,  B60W10/06 ,  B60W10/10 ,  B60W2510/1005 ,  B60W2520/10 ,  B60W2710/0644 ,  B60W2710/105 ,  E02F3/283 ,  E02F9/2066 ,  E02F9/2079

Abstract: A control system for a powertrain in a machine includes a first sensor which generates a first signal indicative of a ground speed of the machine. The control system includes a second sensor which generates a second signal indicative of a load of an engine in the powertrain. The control system includes a third sensor which generates a third signal indicative of an operational state of the machine. The control system includes an input device which enables an operator to generate a request for a powertrain output. The control system further includes a controller in communication with the first sensor, the second sensor, the third sensor and the input device. The controller determines an engine speed command and a transmission output torque command to produce a powertrain output based at least on the first signal, the second signal and the third signal in response to the requested powertrain output.

公开(公告)号：US09890804B2

公开(公告)日：2018-02-13

申请号：US14666879

申请日：2015-03-24

Applicant: DOOSAN INFRACORE CO., LTD.

Inventor： Taejoong Wang

IPC: F15B21/14 ,  F01K23/06 ,  B60H1/00 ,  B60H1/32 ,  E02F9/20 ,  E02F9/22 ,  F01K13/02 ,  F01K25/08

CPC classification number: F15B21/14 ,  B60H1/00378 ,  B60H1/00435 ,  B60H1/3222 ,  E02F9/2066 ,  E02F9/2075 ,  E02F9/2217 ,  F01K13/02 ,  F01K23/065 ,  F01K25/08 ,  F15B2211/41554 ,  F15B2211/611 ,  F15B2211/7058 ,  F15B2211/7135

Abstract: An engine system utilizing a hydraulic pressure includes an engine, a hydraulic system having at least one hydraulic pump discharging a hydraulic oil for operating an actuator and a hydraulic oil tank storing the hydraulic oil returned from the actuator, a hydraulic power transmission device connected to a hydraulic line between the hydraulic pump and the hydraulic oil tank and configured to transmit a hydraulic pressure of the hydraulic oil as a driving source, and a vehicular auxiliary device driven by using the hydraulic pressure transmitted from the hydraulic power transmission device as the driving source.

公开(公告)号：US20170370073A1

公开(公告)日：2017-12-28

申请号：US15626505

申请日：2017-06-19

Applicant: KUBOTA CORPORATION

Inventor： Yuji FUKUDA ,  Ryosuke KINUGAWA

IPC: E02F9/22 ,  E02F9/20 ,  E02F3/42 ,  E02F9/16 ,  E02F3/34

CPC classification number: E02F9/2246 ,  E02F3/3414 ,  E02F3/422 ,  E02F9/166 ,  E02F9/2062 ,  E02F9/2066 ,  E02F9/207 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296

Abstract: A work machine includes a prime mover, a hydraulic pump to be operated by the prime mover to output an operation fluid, a hydraulic device to be operated by the operation fluid, a measurement sensor to measure a first temperature and a second temperature, the first temperature being a temperature of the operation fluid at starting of the prime mover, the second temperature being a temperature of the operation fluid after the starting of the prime mover, and a controller including a determiner to determine an upper limit revolution speed based on the first temperature, the upper limit revolution speed being an upper limit of a revolution speed of the prime mover, and a changer to change the upper limit revolution speed based on the second temperature.

公开(公告)号：US20170361845A1

公开(公告)日：2017-12-21

申请号：US15185665

申请日：2016-06-17

Applicant: Caterpillar Inc.

Inventor： Jeremy Sharp ,  Suman Goli ,  Mark Rettig

IPC: B60W30/188 ,  B60W10/06 ,  E02F9/20 ,  F15B11/08 ,  B60W10/10 ,  B60W30/182

CPC classification number: B60W30/1882 ,  B60W10/06 ,  B60W10/10 ,  B60W10/103 ,  B60W30/182 ,  B60W2300/17 ,  B60W2510/0638 ,  B60W2510/0657 ,  B60W2510/1005 ,  B60W2520/10 ,  B60W2530/00 ,  B60W2540/10 ,  B60W2710/0644 ,  B60W2710/105 ,  E02F9/2066 ,  E02F9/2079 ,  F15B11/08 ,  Y10T477/679 ,  Y10T477/68

Abstract: A control system for a powertrain system includes an electronic control unit structured to receive ground speed data and load factor data. The electronic control unit determines an engine speed command to an engine and a torque command to a variable-torque transmission based upon an engine speed limit and a torque scale factor that can vary with ground speed and load factor. The commands produce an economy output of the powertrain to reduce fuel consumption.

公开(公告)号：US20170284316A1

公开(公告)日：2017-10-05

申请号：US15476437

申请日：2017-03-31

Applicant: Clark Equipment Company

Inventor： Ronald S. Hansen ,  Christopher L. Young

IPC: F02D29/04 ,  F15B21/08 ,  F02D29/02 ,  E02F3/40 ,  E02F9/02 ,  E02F9/20 ,  E02F9/22 ,  F15B11/08 ,  E02F3/34

CPC classification number: F02D29/04 ,  B62D11/02 ,  E02F3/325 ,  E02F3/3414 ,  E02F3/401 ,  E02F9/024 ,  E02F9/16 ,  E02F9/2004 ,  E02F9/2062 ,  E02F9/2066 ,  E02F9/2232 ,  E02F9/2246 ,  E02F9/2271 ,  E02F9/2292 ,  F02D29/02 ,  F15B11/08 ,  F15B21/08 ,  F15B2211/20523 ,  F15B2211/275

Abstract: Power machines, control systems and methods that adjust engine speed based upon actuation of user input controls that control other power machine functions such as travel functions and lift arm functions. By controlling engine speed at least partially in response to the user input devices controlling other machine functions, more optimal engine speeds can be achieved.

公开(公告)号：US09689319B2

公开(公告)日：2017-06-27

申请号：US14485056

申请日：2014-09-12

Applicant: Caterpillar Inc.

Inventor： Brian Douglas Hoff ,  Mark Edward Rettig ,  Suman Goli

IPC: F02D11/10 ,  F02D29/02 ,  F02D41/02 ,  B60W10/00 ,  E02F9/20 ,  E02F9/22

CPC classification number: F02D11/105 ,  B60W10/00 ,  E02F9/2066 ,  E02F9/2246 ,  E02F9/2253 ,  E02F9/2289 ,  F02D29/02 ,  F02D41/0215 ,  F02D41/0225 ,  F02D2200/602 ,  F02D2200/606 ,  F02D2250/18

Abstract: A power system is disclosed as having a power source, a transmission configured to receive a torque output from the power source and to drive a traction device, and an operator input device. The power system may also have a controller configured to reference a signal from the operator input device with a map stored in memory to determine a corresponding speed of the power source, and to determine a margin between an actual and a maximum available torque output of the power source at a current speed. The controller may also be configured to selectively adjust a speed of the power source mapped to the maximum displaced position of the operator input device based on the margin, and to selectively adjust fueling of the power source at a current displacement position of the operator input device and operation of the transmission based on the signal and map.

公开(公告)号：US20170121944A1

公开(公告)日：2017-05-04

申请号：US15301824

申请日：2015-04-17

Applicant: Caterpillar SARL

Inventor： Shigeo Kajita ,  Kouji Kishida ,  Yoshihiko Hata ,  Nobuaki Matoba

IPC: E02F9/22 ,  F15B13/04 ,  F15B1/027 ,  F15B11/10 ,  E02F3/96 ,  E02F9/20

CPC classification number: E02F9/2242 ,  E02F3/96 ,  E02F9/2066 ,  E02F9/2075 ,  E02F9/2217 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  F15B1/027 ,  F15B11/10 ,  F15B13/0416 ,  F15B2201/51 ,  F15B2211/605 ,  F15B2211/6306 ,  F15B2211/633 ,  F15B2211/6333 ,  F15B2211/6346 ,  F15B2211/6651 ,  F15B2211/6656 ,  F15B2211/6658 ,  F15B2211/7058 ,  F15B2211/763 ,  F15B2211/765

Abstract: A control device for suppressing engine load fluctuation according to main pump circuit conditions, wherein an assist torque calculation task includes a target engine torque calculation task separating smooth torque components from main pump load torque and setting a minimum value of either smooth torque component or engine setting torque as target engine torque, and a subtractor calculating target assist torque based on a difference between the main pump load torque and the target engine torque, the assist torque calculation task controlling a capacity of an assist pump based on the target assist torque and controlling switching between an assist mode and a charge mode.

公开(公告)号：US20170058489A1

公开(公告)日：2017-03-02

申请号：US15123256

申请日：2015-07-17

Applicant: HITACHI CONSTRUCTION MACHINERY TIERRA CO., LTD.

Inventor： Takuya NOMURA ,  Tatsuo TAKISHITA ,  Masayuki YUNOUE ,  Wataru TAKAGI ,  Yoshikatsu SUMIDA

IPC: E02F9/20 ,  B60R25/20 ,  F15B13/01 ,  F02D29/02 ,  F15B11/08 ,  E02F3/32 ,  E02F9/22

CPC classification number: E02F9/2058 ,  B60R16/02 ,  B60R25/20 ,  B60R2325/308 ,  E02F3/325 ,  E02F3/964 ,  E02F9/2004 ,  E02F9/2066 ,  E02F9/2271 ,  F02D29/02 ,  F02D29/04 ,  F15B11/08 ,  F15B13/01 ,  F15B2211/20523

Abstract: A hydraulic excavator (1) includes a wireless authentication starting device (37) for switching conduction or non-conduction between a battery (18) and a starter motor (16) as well as a first electrical component (24) on the basis of an operation of a power switch (12) provided in the vicinity of an operator's seat (9) and authentication of a portable key (38) by wireless communication. The wireless authentication starting device (37) switches an “engine stop/conduction OFF” state to an “engine stop/conduction ON” state when, in the “engine stop/conduction OFF” state, the portable key (38) is within an authenticable range, the gate lock lever (13) is at an unlock position, and the power switch (12) is operated.

Abstract translation: 一种液压挖掘机（1）包括：无线认证启动装置（37），用于在电池（18）和起动电动机（16）之间切换导通或非导通以及第一电气部件（24），其基于 设置在操作者座椅（9）附近的电源开关（12）的操作和通过无线通信的便携式钥匙（38）的认证。 无线认证启动装置（37）在“发动机停止/导通关闭”状态下将“发动机停止/导通关闭”状态切换到“发动机停止/导通接通”状态时，便携式钥匙（38）在 门锁定杆（13）处于解锁位置，电源开关（12）被操作。