公开(公告)号：US07146809B1

公开(公告)日：2006-12-12

申请号：US11204652

申请日：2005-08-16

申请人： Raymond Hauser ,  William H. Ward

发明人： Raymond Hauser ,  William H. Ward

IPC分类号： F16D31/02 ,  F16D39/00

CPC分类号： F16D31/00 ,  B60Y2200/223 ,  B62D11/005 ,  B62D11/04 ,  F16H61/4008 ,  F16H61/4017 ,  F16H61/4043

摘要： An improved valve for use in a hydrostatic drive apparatus for a vehicle such as a zero turn vehicle. For each hydraulic drive system in the vehicle, a valve is located between the high and low pressure sides of the closed hydraulic circuit connecting the hydraulic pump and motor. The valve opens when the pressure rise rate in the high pressure side reaches a set level to minimize pressure spikes in the high pressure side and thus improve performance of the vehicle. A valve block may be used to mount the valve, and a second valve may also be included therein to connect the two pressure sides of the hydraulic circuit in a similar manner when the vehicle is operated in reverse.

摘要翻译： 一种用于诸如零转弯车辆的车辆的静液压驱动装置中的改进的阀。 对于车辆中的每个液压驱动系统，阀门位于连接液压泵和马达的闭合液压回路的高压侧和低压侧之间。 当高压侧的压力上升率达到设定水平时，阀门打开，以使高压侧的压力峰值最小化，从而提高车辆的性能。 可以使用阀块来安装阀，并且当车辆反向操作时，也可以包括第二阀，以便以类似的方式连接液压回路的两个压力侧。

公开(公告)号：US2933897A

公开(公告)日：1960-04-26

申请号：US66060157

申请日：1957-05-21

申请人： DRAVO CORP

发明人： TOUTANT WILLIAM T

IPC分类号： F15B3/00 ,  F16H61/40 ,  F16H61/4008

CPC分类号： F16H61/4008 ,  F15B3/00 ,  F16H61/40 ,  Y10T137/2524

公开(公告)号：US12092209B2

公开(公告)日：2024-09-17

申请号：US18452156

申请日：2023-08-18

申请人： DANA ITALIA S.R.L.

发明人： Lorenzo Dalla Palma ,  Claudio Angeloni

IPC分类号： F16H61/00 ,  F16H61/02 ,  F16H61/4008 ,  F16H61/47 ,  F16H61/472 ,  F16H61/20

CPC分类号： F16H61/4008 ,  F16H61/0059 ,  F16H61/0204 ,  F16H61/47 ,  F16H61/472 ,  F16H2061/205

摘要： Methods and systems for a hydromechanical transmission in a vehicle are provided herein. In one example, the transmission system includes a hydrostatic assembly with a hydraulic pump in fluidic communication with a hydraulic motor. The transmission system further includes a controller configured to selectively transition between a torque control mode and a speed control mode of the hydrostatic assembly while the vehicle is on a slope.

公开(公告)号：US20230400096A1

公开(公告)日：2023-12-14

申请号：US18452156

申请日：2023-08-18

申请人： DANA ITALIA S.R.L.

发明人： Lorenzo DALLA PALMA ,  Claudio ANGELONI

IPC分类号： F16H61/4008 ,  F16H61/00 ,  F16H61/47 ,  F16H61/02 ,  F16H61/472

CPC分类号： F16H61/4008 ,  F16H61/0059 ,  F16H61/47 ,  F16H61/0204 ,  F16H61/472 ,  F16H2061/205

摘要： Methods and systems for a hydromechanical transmission in a vehicle are provided herein. In one example, the transmission system includes a hydrostatic assembly with a hydraulic pump in fluidic communication with a hydraulic motor. The transmission system further includes a controller configured to selectively transition between a torque control mode and a speed control mode of the hydrostatic assembly while the vehicle is on a slope.

公开(公告)号：US11773970B2

公开(公告)日：2023-10-03

申请号：US17448982

申请日：2021-09-27

申请人： DANA ITALIA S.R.L.

发明人： Lorenzo Dalla Palma ,  Claudio Angeloni

IPC分类号： F16H61/20 ,  F16H61/4008 ,  F16H61/00 ,  F16H61/47 ,  F16H61/02 ,  F16H61/472

CPC分类号： F16H61/4008 ,  F16H61/0059 ,  F16H61/0204 ,  F16H61/47 ,  F16H61/472 ,  F16H2061/205

摘要： Methods and systems for a hydromechanical transmission in a vehicle are provided herein. In one example, the transmission system includes a hydrostatic assembly with a hydraulic pump in fluidic communication with a hydraulic motor. The transmission system further includes a controller configured to selectively transition between a torque control mode and a speed control mode of the hydrostatic assembly while the vehicle is on a slope.

公开(公告)号：US20190128405A1

公开(公告)日：2019-05-02

申请号：US15961716

申请日：2018-04-24

申请人： Hyundai Motor Company ,  Kia Motors Corporation

发明人： Yong Uk Shin ,  Minho Chae ,  Chon Ok Kim ,  Sun Sung Kwon

IPC分类号： F16H61/00 ,  F16H61/28 ,  F16H61/4008 ,  F16H63/34

CPC分类号： F16H61/0009 ,  F16H61/0021 ,  F16H61/0025 ,  F16H61/0267 ,  F16H61/0269 ,  F16H61/2807 ,  F16H61/4008 ,  F16H61/688 ,  F16H63/3475 ,  F16H2061/6614 ,  F16H2063/025 ,  F16H2200/0065

摘要： A hydraulic control system may include control valve to selectively supply line pressure to first and second ejection flow channels, first shift valve converting flow channel, second shift valve converting path to selectively supply hydraulic pressure of the first ejection path to first chambers of first and second actuators and to selectively supply hydraulic pressure of the second ejection path to second chambers of the first and second actuators, third shift valve converting path to selectively supply hydraulic pressure of the first ejection path to first chamber of third actuator and to selectively supply hydraulic pressure of the second ejection path to second chamber of third actuator, and fourth shift valve converting path to selectively supply hydraulic pressure of the first ejection path to first chambers of fourth and fifth actuators and to selectively supply hydraulic pressure of the second ejection path to second chambers of fourth and fifth actuators.

公开(公告)号：US20180195605A1

公开(公告)日：2018-07-12

申请号：US15864310

申请日：2018-01-08

申请人： Robert Bosch GmbH

发明人： Paul Luis Hernandez Ladera ,  Steffen Mutschler

IPC分类号： F16H61/423 ,  F16H61/4008 ,  F16H61/47 ,  F16H61/433

CPC分类号： F16H61/423 ,  F16H61/4008 ,  F16H61/433 ,  F16H61/47 ,  F16H61/472

摘要： A hydrostatic propulsion drive for a vehicle is disclosed including an electronic control unit and a hydrostatic transmission having a hydraulic pump with an adjustable swept volume and a hydraulic motor with an adjustable swept volume, the hydraulic pump being arranged in a closed hydraulic circuit. The swept volumes of the hydraulic pump and the hydraulic motor are changeable in accordance with a correction factor which is stored in a characteristic diagram and is dependent on the rotational speed and the drive torque of the hydraulic motor, the operating pressure at the hydraulic motor being increased if the correction factor is used. Due to the increased operating pressure, flow-induced pressure drops are reduced by way of volumetric flows, and leakage flows via gaps between moving parts of the hydraulic pump and the hydraulic motor are kept large enough to avoid excessive friction and loss of efficiency.

公开(公告)号：US20180119809A1

公开(公告)日：2018-05-03

申请号：US15797893

申请日：2017-10-30

申请人： HydraForce, Inc.

发明人： David Ruxton

IPC分类号： F16H61/47 ,  F16H61/431 ,  F16H61/4008 ,  F16H61/4061 ,  F16H61/4183 ,  A01D69/03

CPC分类号： F16H61/47 ,  A01D57/02 ,  A01D69/03 ,  F16H61/4008 ,  F16H61/4061 ,  F16H61/4183 ,  F16H61/431

摘要： A hydraulic motor drive system controls the pressure of the hydraulic fluid delivered to a motor by a variable pressure source to control the rotation of a high inertial load rotary member driven by the motor. The speed of the motor and/or rotary component is monitored and changes in the speed are controlled by changing the pressure of the hydraulic fluid delivered to the motor.

公开(公告)号：US09725095B2

公开(公告)日：2017-08-08

申请号：US14891193

申请日：2013-05-29

申请人： International Truck Intellectual Property Company, LLC

发明人： Bradley S. Carlson

IPC分类号： B60W10/06 ,  B60W30/182 ,  F16H61/02 ,  F16H59/54 ,  B60W10/10 ,  F16H61/4008 ,  F16H61/4183 ,  B60W30/16 ,  F16H59/70

CPC分类号： B60W30/182 ,  B60W10/06 ,  B60W10/10 ,  B60W30/16 ,  B60W2510/1005 ,  B60W2510/18 ,  B60W2520/10 ,  B60W2540/12 ,  B60W2540/16 ,  B60W2550/10 ,  B60W2710/1088 ,  F16H59/54 ,  F16H59/70 ,  F16H61/0213 ,  F16H61/4008 ,  F16H61/4183 ,  F16H2061/0234 ,  Y10T477/648 ,  Y10T477/68

摘要： An adaptive automatic transmission control system responds to stopping of a vehicle for reducing torque absorption by an automatic transmission and movement of and range to obstructions forward from a vehicle for reengaging the automatic transmission after a stop. The torque converter is released from its reduced torque absorption mode under one of three circumstances: 1) the brake pedal is released; 2) the detected obstruction moves outside a first predefined maximum range; and, 3) the detected obstruction moves outside a second predefined maximum range and at greater than a predefined minimum speed.

公开(公告)号：US09702458B2

公开(公告)日：2017-07-11

申请号：US14960749

申请日：2015-12-07

申请人： Caterpillar Inc.

发明人： Corwin Storer ,  Sudarshan Maiyur

IPC分类号： F16H61/47 ,  F16H47/02 ,  F16H61/4008 ,  F16H61/42 ,  E02F3/76 ,  F16H61/44 ,  B60K17/356

CPC分类号： F16H61/47 ,  B60K6/08 ,  B60K17/356 ,  B60Y2200/411 ,  E02F3/7636 ,  E02F9/2079 ,  E02F9/2253 ,  E02F9/2296 ,  F16H47/02 ,  F16H61/4008 ,  F16H61/42 ,  F16H61/44 ,  F16H2047/025

摘要： A system and method configured to select a control configuration for a hydraulic fluid system. The system includes a controller having at least one sensor and a processor. The controller is configured to sense a feed pressure and a return pressure of a fluid within the hydraulic fluid system and a speed of a driven set of wheels and a speed of an idle set of wheels. The driven set of wheels are drivingly coupled to an engine, and the idle set of wheels are drivingly coupled to the hydraulic fluid system. The controller is further configured to select a control configuration for the hydraulic fluid system based on a ratio between the feed pressure and the return pressure, and further based on a ratio between the speed of the driven set of wheels and the speed of the idle set of wheels.