-
公开(公告)号：US12055212B2
公开(公告)日：2024-08-06
申请号：US18379335
申请日：2023-10-12
Applicant: KUBOTA CORPORATION
Inventor： Tetsuo Yamaguchi , Ryoma Iwase
CPC classification number: F16H61/0206 , F16H47/04 , F16H59/70 , F16H61/40 , F16H2059/366 , F16H59/40
Abstract: An electromagnetic valve control device includes a current gear ratio obtainer to obtain a current gear ratio as a ratio of an output revolutions number of a driver and an output revolutions number of a transmission, a current electric current value obtainer to obtain a current electric current value as a value of an electric current to be inputted to a first electromagnetic valve or a second electromagnetic valve, and a switching controller to, based on the current electric current value and a gear ratio difference as a difference between a target gear ratio and the current gear ratio, perform electromagnetic valve switching control to switch between use of the first electromagnetic valve to control a pump swash plate and use of the second electromagnetic valve to control the pump swash plate.
-
公开(公告)号：US11485620B2
公开(公告)日：2022-11-01
申请号：US16955056
申请日：2018-12-05
Applicant: HUBTEX MASCHINENBAU GMBH & CO. KG
Inventor： Michael Otterbein
Abstract: An operating method for an industrial truck. The industrial truck includes a hydraulic pump which provides a hydraulic output, an output setpoint value generator which controls the hydraulic output to influence a traveling speed, two drive wheels which respectively comprise a hydraulic drive unit driven via the hydraulic pump, and a hydraulic device. The hydraulic device is switchable between a first switching state, where the hydraulic drive units are supplied with hydraulic outputs which are different, and a second switching state, where the hydraulic drive units are supplied with hydraulic outputs that have a particular ratio with respect to each other. The operating method includes detecting at least one operating parameter of the output setpoint value generator, comparing the at least one operating parameter with a predefined threshold value, and moving the hydraulic device from the first switching state to the second switching state based on the comparison.
-
公开(公告)号：US10066745B2
公开(公告)日：2018-09-04
申请号：US15413523
申请日：2017-01-24
Applicant: ZF Friedrichshafen AG
Inventor： Simon Geiger , Matthias Madlener , Sven Bieber
Abstract: A power-split transmission device for a vehicle, which connects a drive engine to a drive output, having a hydrostatic unit for continuous adjustment of the transmission ratio at a transmission unit, and two range clutches that alternately operate for respectively associated driving ranges with different transmission ratios. A control unit, during regular vehicle deceleration, implements the driving range change from a first range, with higher transmission ratios, to a second range, with lower transmission ratios, by switching from the first to the second range clutch in accordance with a synchronous point dependent deceleration control logic. In the special case of an unexpected increase of the deceleration dynamic at the beginning of an already initiated driving range change from the first to the second driving range, the control unit immediately forces the change by bypassing the synchronous point dependent deceleration control logic when other boundary conditions are fulfilled.
-
公开(公告)号：US09709167B2
公开(公告)日：2017-07-18
申请号：US14839021
申请日：2015-08-28
Applicant: Hyundai Motor Company
Inventor： Sang Joon Kim , Chan Ho Lee , Joon Young Park
CPC classification number: F16H61/16 , B60W10/10 , B60W20/30 , B60W2520/00 , B60W2540/30 , B60W2710/1005 , F16H31/00 , F16H61/0213 , F16H61/061 , F16H61/40 , F16H2061/0234 , F16H2306/14 , Y10S903/945
Abstract: A shift control method and system for a hybrid vehicle are provided to increase the recovery rate of regenerative energy, improve the fuel efficiency, and minimize the loss of the fuel efficiency upon reaccelerating after braking. The method include: acquiring in real-time information regarding a transmission input speed during driving and sensing a brake pedal operation. In addition, whether a road driving situation or a driver tendency corresponds to a skip shift allowable condition is detected when the brake pedal operation is sensed. A target shift stage to which a skip shift of two or more stages is performed is selected from a current shift stage based on the transmission input speed in real-time, when the road driving situation or the driver tendency corresponds to the skip shift allowable condition. Then a transmission is operated to shift to the selected target shift stage.
-
公开(公告)号：US09605739B2
公开(公告)日：2017-03-28
申请号：US14251562
申请日：2014-04-11
Applicant: GPOUER CO., LTD.
Inventor： Tsang-Lin Hsu , Jung-Feng Yeh , Jau-Huai Lu , Tien-Tung Chung , Jian-Hung Lin , Chia-Chun Liu
CPC classification number: F16H47/02 , B60K7/0015 , B60K7/0023 , B60K17/043 , F01C1/123 , F16H57/02 , F16H61/40
Abstract: A power transmission system comprises a transmission device, and a power supply device which powers the transmission device, wherein the transmission device comprises a cavity having a body, covers, an inlet and an outlet; at least a pair of rotors and a gear set that are assembled in the cavity; and a transmission shaft pivotally connected with the pair of rotors and the gear set; the power supply device comprises a power equipment available for transmitting a working fluid; shaft adapters connected with the inlet and the outlet of the cavity; and a connecting pipe connected between the power equipment and the shaft adapter; the working fluid is transmitted by the connecting pipe from the power equipment to the inlet of the cavity to provide the pair of rotors with normal force for radial motion in a reverse rotation direction and make pressure in the cavity increased.
-
Patent Agency Ranking
公开(公告)号：US08918258B2
公开(公告)日：2014-12-23
申请号：US13658465
申请日：2012-10-23
Applicant: Caterpillar Inc.
Inventor： Brian D. Hoff , Michael Barngrover , Mark E. Rettig
CPC classification number: B60W30/1884 , B60W10/02 , B60W2520/30 , B60W2710/105 , B60Y2300/56 , F16H61/472
Abstract: System and method for controlling a transmission in response to transient torque events are disclosed. The method includes commanding a maximum transmission output torque; comparing the commanded output torque to a feedback torque to determine if they are equal; and incrementally increasing the transmission output torque until equal. A machine and a powertrain include a controller configured to command a maximum negative transmission output torque in response to a transient torque event, and incrementally increase the transmission output torque until such time as the transmission output torque is equal to or within a preset range of the feedback torque.
Abstract translation: 公开了用于响应于瞬时扭矩事件来控制传动的系统和方法。 该方法包括命令最大传输输出扭矩; 将指令输出转矩与反馈转矩进行比较，以确定它们是否相等; 并增加传动输出扭矩直到相等。 机器和动力传动系包括：控制器，被配置为响应于瞬时转矩事件来命令最大负传动输出转矩，并递增地增加变速器输出扭矩，直到变速器输出转矩等于或在预定范围内 反馈扭矩。
-
公开(公告)号：US08321099B2
公开(公告)日：2012-11-27
申请号：US12865160
申请日：2009-01-26
Applicant: Naohiro Yamada , Tsukasa Hayashi
Inventor： Naohiro Yamada , Tsukasa Hayashi
CPC classification number: F16H61/0213 , F16H59/18 , F16H59/44 , F16H61/68 , Y10T477/636
Abstract: When an accelerator pedal opening angle is large, a target vehicle speed is calculated using a read-ahead vehicle speed and, when the accelerator pedal opening angle is small, the target gear shift ratio is calculated using an actual vehicle speed.
Abstract translation: 当加速器踏板开度大时，使用预读车速计算目标车速，并且当加速器踏板开度小时，使用实际车速来计算目标变速比。
-
公开(公告)号：US08240143B2
公开(公告)日：2012-08-14
申请号：US12307167
申请日：2007-07-02
Applicant: Jean Heren , Gilles Lemaire
Inventor： Jean Heren , Gilles Lemaire
CPC classification number: F16H61/4157 , B60K6/12 , F16H61/4026 , F16H61/4043 , F16H61/4061 , F16H61/4096 , F16H61/4139 , F16H61/4148 , F16H61/423 , Y02T10/6208
Abstract: A circuit having at least one hydraulic motor, two main ducts for feeding or discharging the at least one motor, a low-pressure fluid source, and a high-pressure accumulator forming a high-pressure fluid source. The circuit is suitable for operating in an energy recovery mode in which the feed main duct is connected to the low-pressure fluid source and the discharge main duct is connected to the high-pressure accumulator, and in an energy delivery mode in which the connections are inverted. The low-pressure fluid source has a high-flow-rate booster pump suitable for delivering a flow-rate of fluid that is sufficient to feed fluid to the at least one hydraulic motor while the motor is at maximum speed in energy recovery mode, and an adjustable pressure limiter suitable for being controlled so as to cause the pressure of the fluid at the outlet of the low-pressure fluid source to vary.
Abstract translation: 具有至少一个液压马达的电路，用于供给或排出至少一个马达的两个主导管，低压流体源和形成高压流体源的高压储能器。 该电路适于在能量回收模式中操作，其中进料主管道连接到低压流体源，排放主管道连接到高压蓄能器，并且在能量输送模式中，其中连接 被倒置。 低压流体源具有高流量增压泵，适用于在能量回收模式下马达处于最大速度时输送足以将流体供给到至少一个液压马达的流体流量;以及 适用于被控制以便使低压流体源的出口处的流体的压力变化的可调压力限制器。
-
9.发明授权Drive train as well as a method of operating a hydraulic pump of a drive train 有权传动系以及驱动传动系液压泵的操作方法公开(公告)号：US08152689B2
公开(公告)日：2012-04-10
申请号：US12192319
申请日：2008-08-15
Applicant: Kai Borntrager
Inventor： Kai Borntrager
CPC classification number: B60K25/02 , F04B49/20 , F04B2203/0209 , Y10T477/6347 , Y10T477/637
Abstract: A method of operating a hydraulic pump of a drive train of a motor vehicle having a transmission with a hydrodynamic torque converter and a engine, with the input speed of the hydraulic pump being adjusted depending on the speed of the engine. The input speed of the hydraulic pump is adjusted depending on the pump speed of the torque converter, which corresponds to the speed of the engine and depends on the turbine speed of the torque converter, such that when the pump speed of the torque converter is higher than the turbine speed of the same, the hydraulic pump is operated at a speed higher than the speed of the engine. When the turbine speed of the torque converter and the pump speed of the same equalize, the excessive increase in the input speed of the hydraulic pump is reduced in relation to the speed of the engine.
Abstract translation: 一种使用具有液力变矩器和发动机的变速器的机动车辆的传动系的液压泵的操作方法，其中液压泵的输入速度根据发动机的速度进行调节。 液压泵的输入速度根据变矩器的泵速调节，该转速对应于发动机的速度，并且取决于变矩器的涡轮转速，使得当变矩器的泵速度较高时 液压泵的运行速度高于发动机的转速。 当变矩器的涡轮转速和泵速相同时，相对于发动机的转速，液压泵的输入速度过度增加。
-
公开(公告)号：US07980994B2
公开(公告)日：2011-07-19
申请号：US12712541
申请日：2010-02-25
Applicant: Eiji Nishi , Keishiro Nishi , Atsushi Shinkai , Yasunobu Nakatani
Inventor： Eiji Nishi , Keishiro Nishi , Atsushi Shinkai , Yasunobu Nakatani
CPC classification number: B60W10/11 , B60W10/06 , F16H47/02 , F16H59/42 , F16H61/423 , F16H61/433 , F16H61/46 , F16H61/462 , F16H2059/6853 , Y10T74/19153 , Y10T477/631 , Y10T477/636 , Y10T477/676 , Y10T477/688
Abstract: A load control structure for a work vehicle comprises: set rotation speed detection device for detecting a set rotation of an engine of the work vehicle; actual rotation speed detection device that senses an actual rotational speed of the engine; continuously variable speed change device that receives power from an engine of the work vehicle; speed change position detecting device for detecting a speed change operation position of the continuously variable speed change device; operating device for speed-shifting the continuously variable speed change device; control device for controlling the operation of the operating device; wherein the control device calculates a drop amount of the actual engine rotation speed from the set rotation speed based on the detected information from the set rotation speed detection device and the actual rotation speed detection device, and sets a limit operation position for the continuously variable speed change device based on the calculated drop amount and a correlation data that correlates the actual engine rotation speeds with operating positions of the continuously variable speed change device, and controls the operating device such that the operating position of the continuously variable speed change device moves to the limit operating position based on the set limit operating position and detected information from the speed change position detecting device, and wherein the control device has command device for commanding a change of the correlation data.
Abstract translation: 一种工作车辆的负载控制结构，具备：检测作业车辆的发动机的设定旋转的设定转速检测装置; 感测发动机的实际转速的实际转速检测装置; 从工作车辆的发动机接收动力的无级变速装置; 速度变化位置检测装置，用于检测无级变速装置的变速操作位置; 用于变速无级变速装置的操作装置; 用于控制操作装置的操作的控制装置; 其特征在于，所述控制装置基于来自所设定的转速检测装置和实际转速检测装置的检测信息，根据所设定的转速来计算实际发动机转速的下降量，并设定所述连续变速的极限动作位置 基于所计算的液滴量的变更装置和将实际的发动机转速与无级变速装置的动作位置相关联的相关数据，并且控制操作装置，使得连续变速装置的运转位置向 基于所设定的限制操作位置的限制操作位置和来自所述变速位置检测装置的检测信息，并且其中所述控制装置具有用于指示相关数据的改变的命令装置。
-
-
-
-
-
-
-
-
-
Search Results
880
records
(took 0.015 seconds)
