公开(公告)号：US07204170B2

公开(公告)日：2007-04-17

申请号：US11281023

申请日：2005-11-17

Applicant: Per-Olof Davidsson

Inventor： Per-Olof Davidsson

IPC: F16H48/12

CPC classification number: F16D25/082 ,  F16D43/284 ,  F16H48/12 ,  Y10T74/19005

Abstract: A device for transmitting torque between two rotatable, coaxial shaft members contains a clutch between the two shaft members and engageable to counteract rotational speed differential between the shaft members by a hydraulic piston under the control of an electrically controlled throttle or pressure valve, and a clutch pump for supplying hydraulic pressure to the hydraulic piston, the clutch pump being driven by either one or both of the shaft members. The hydraulic piston, the valve, and the clutch pump are connected in a hydraulic system also containing a feeder pump for maintaining a certain base pressure in the system. The hydraulic system conditionally allows flow from the feeder pump past the valve to the hydraulic piston irrespective of the flow from the clutch pump.

Abstract translation: 用于在两个可旋转的同轴轴构件之间传递扭矩的装置包括两个轴构件之间的离合器，并且能够在电控节流阀或压力阀的控制下通过液压活塞抵抗轴构件之间的转速差， 用于向液压活塞供应液压的泵，离合器泵由轴构件中的一个或两个驱动。 液压活塞，阀门和离合器泵连接在也包含供给泵的液压系统中，用于在系统中保持一定的基础压力。 液压系统有条件地允许来自馈送泵的流经阀门到液压活塞，而与离合器泵的流量无关。

公开(公告)号：US20060065069A1

公开(公告)日：2006-03-30

申请号：US11281023

申请日：2005-11-17

Applicant: Per-Olof Davidsson

Inventor： Per-Olof Davidsson

IPC: F16H48/12

CPC classification number: F16D25/082 ,  F16D43/284 ,  F16H48/12 ,  Y10T74/19005

Abstract: A device for transmitting torque between two rotatable, coaxial shaft members contains a clutch between the two shaft members and engageable to counteract rotational speed differential between the shaft members by a hydraulic piston under the control of an electrically controlled throttle or pressure valve, and a clutch pump for supplying hydraulic pressure to the hydraulic piston, the clutch pump being driven by either one or both of the shaft members. The hydraulic piston, the valve, and the clutch pump are connected in a hydraulic system also containing a feeder pump for maintaining a certain base pressure in the system. The hydraulic system conditionally allows flow from the feeder pump past the valve to the hydraulic piston irrespective of the flow from the clutch pump.

Abstract translation: 用于在两个可旋转的同轴轴构件之间传递扭矩的装置包括两个轴构件之间的离合器，并且能够在电控节流阀或压力阀的控制下通过液压活塞抵抗轴构件之间的转速差， 用于向液压活塞供应液压的泵，离合器泵由轴构件中的一个或两个驱动。 液压活塞，阀门和离合器泵连接在也包含供给泵的液压系统中，用于在系统中保持一定的基础压力。 液压系统有条件地允许来自馈送泵的流经阀门到液压活塞，而与离合器泵的流量无关。

公开(公告)号：US20090064674A1

公开(公告)日：2009-03-12

申请号：US12207830

申请日：2008-09-10

Applicant: Per-Olof Davidsson

Inventor： Per-Olof Davidsson

IPC: F16L55/04 ,  F16D31/02

CPC classification number: F15B1/021 ,  F15B1/04 ,  F15B21/044 ,  F15B2201/21 ,  F15B2201/31 ,  F15B2201/4053 ,  F15B2201/411 ,  F15B2201/413

Abstract: An accumulator for a hydraulic system, wherein the accumulator comprises a liner, a piston and a housing, that defines a pressure chamber, for receiving hydraulic fluid at high pressure, wherein the piston is biased towards an end position of the pressure chamber for interacting with the hydraulic fluid in the pressure chamber, and the piston is movable in a predetermined range for accumulating hydraulic fluid. The accumulator has at least one outlet port in a sidewall of the liner, which outlet port is covered by the piston in the predetermined range and is uncovered when the piston has moved a predetermined distance from the end position. A hydraulic system is also provided that comprises the above accumulator and an all-wheel drive system comprising the above hydraulic system. A method for de-airing an accumulator according to above is also provided.

Abstract translation: 一种用于液压系统的蓄能器，其中所述蓄能器包括衬套，活塞和壳体，其限定压力室，用于在高压下接收液压流体，其中所述活塞朝向所述压力室的端部位置偏压，以与 压力室中的液压流体和活塞能够在预定的范围内移动以累积液压流体。 蓄能器在衬套的侧壁中具有至少一个出口，该出口端口被活塞覆盖在预定范围内，并且当活塞已经从最终位置移动预定距离时，其不被覆盖。 还提供一种液压系统，其包括上述蓄能器和包括上述液压系统的全轮驱动系统。 还提供了一种根据上述的放电器的放电方法。

公开(公告)号：US07395736B2

公开(公告)日：2008-07-08

申请号：US11766520

申请日：2007-06-21

Applicant: Per-Olof Davidsson ,  Bo Lundström ,  Lars Severinsson

Inventor： Per-Olof Davidsson ,  Bo Lundström ,  Lars Severinsson

IPC: F16H48/30

CPC classification number: B60K17/35 ,  B60K23/0808 ,  F16D48/0206 ,  F16D2048/0203 ,  F16D2500/1026 ,  F16D2500/10431 ,  F16D2500/1045 ,  F16D2500/5114 ,  F16H48/12 ,  Y10T74/19005 ,  Y10T74/19051 ,  Y10T74/19074

Abstract: An all-wheel drive system for a vehicle having an engine and a drive shaft is arranged between the drive shaft and front and rear propellable shafts. These shafts are interconnected by first and second clutches respectively, and the propellable shafts are coupled to front and rear wheels, for transferring torque from the drive shaft to the front and/or rear wheels. The all-wheel drive system further includes at least first and second actuators that are coupled to at least first and second clutches, where at least the first clutch is engaged by a spring and at least the first actuator is coupled for disengaging the first clutch when the first actuator is operated. The second actuator is coupled for engaging the second clutch when the second actuator is operated.

Abstract translation: 具有发动机和驱动轴的车辆的全轮驱动系统布置在驱动轴和前后可推动轴之间。 这些轴分别由第一离合器和第二离合器互连，并且可推动轴联接到前轮和后轮，用于将扭矩从驱动轴传递到前轮和/或后轮。 四轮驱动系统还包括至少第一和第二致动器，其耦合到至少第一和第二离合器，其中至少第一离合器由弹簧接合，并且至少第一致动器被联接以用于使第一离合器分离， 第一个致动器被操作。 当第二致动器被操作时，第二致动器被联接以接合第二离合器。

公开(公告)号：US07458437B2

公开(公告)日：2008-12-02

申请号：US11455551

申请日：2006-06-19

Applicant: Per-Olof Davidsson

Inventor： Per-Olof Davidsson

IPC: B60K17/34

CPC classification number: B60K17/3515 ,  B60K5/04 ,  B60K17/344 ,  B60K17/3505

Abstract: In a four-wheel drive motor vehicle with a primary drive axle and a secondary drive axle, at least one secondary drive axle coupling of the limited slip type is provided in the powertrain between the engine of the vehicle and the secondary drive axle. A primary drive axle coupling of the limited slip type is provided for the primary drive axle.

Abstract translation: 在具有主驱动轴和次驱动轴的四轮驱动机动车辆中，在车辆的发动机和次驱动轴之间的动力系中设置有限滑单元的至少一个次驱动桥联轴器。 为主驱动轴提供限滑单元的主驱动桥联轴器。

公开(公告)号：US07210376B2

公开(公告)日：2007-05-01

申请号：US10730581

申请日：2003-12-08

Applicant: Per-Olof Davidsson

Inventor： Per-Olof Davidsson

IPC: F16H48/12

CPC classification number: F16D25/082 ,  F16D43/284 ,  F16H48/12 ,  Y10T74/19005

Abstract: A device for transmitting torque between two rotatable, coaxial shaft members (1, 2) contains a clutch (35) between the two shaft members and engageable—to counteract rotational speed differential between the shaft members—by a hydraulic piston (18) under the control of an electrically controlled throttle or pressure valve (26), and a clutch pump (36) for supplying hydraulic pressure to the hydraulic piston, the clutch pump being driven by either one or both of the shaft members. The hydraulic piston (18), the valve (26), and the clutch pump (36) are connected in a hydraulic system also containing a feeder pump (31) for maintaining a certain base pressure in the system. The hydraulic system conditionally allows flow from the feeder pump (31) past the valve (26) to the hydraulic piston (18) irrespective of the flow from the clutch pump (36).

Abstract translation: 一种用于在两个可旋转的同轴轴构件（1,2）之间传递扭矩的装置，在两个轴构件之间包含一个离合器（35），可通过液压活塞（18） 电动节气门或压力阀（26）的控制，以及用于向液压活塞供给液压的离合器泵（36），离合器泵由一个或两个轴构件驱动。 液压活塞（18），阀（26）和离合器泵（36）在也包含供给泵（31）的液压系统中连接，用于维持系统中的一定的基础压力。 液压系统有条件地允许来自供给泵（31）的流经阀（26）流到液压活塞（18），而与离合器泵（36）的流动无关。

公开(公告)号：US20060231316A1

公开(公告)日：2006-10-19

申请号：US11455551

申请日：2006-06-19

Applicant: Per-Olof Davidsson

Inventor： Per-Olof Davidsson

IPC: B60K17/35

CPC classification number: B60K17/3515 ,  B60K5/04 ,  B60K17/344 ,  B60K17/3505

Abstract: In a four-wheel drive motor vehicle with a primary drive axle and a secondary drive axle, at least one secondary drive axle coupling of the limited slip type is provided in the powertrain between the engine of the vehicle and the secondary drive axle. A primary drive axle coupling of the limited slip type is provided for the primary drive axle.

Abstract translation: 在具有主驱动轴和次驱动轴的四轮驱动机动车辆中，在车辆的发动机和次驱动轴之间的动力系中设置有限滑单元的至少一个次驱动桥联轴器。 为主驱动轴提供限滑单元的主驱动桥联轴器。

公开(公告)号：US20090112431A1

公开(公告)日：2009-04-30

申请号：US12348608

申请日：2009-01-05

Applicant: Per-Olof Davidsson

Inventor： Per-Olof Davidsson

IPC: G06F19/00

CPC classification number: F16D48/066 ,  F16D2500/10431 ,  F16D2500/3028 ,  F16D2500/5108 ,  F16D2500/511

Abstract: Method of controlling a hydraulic system for an all-wheel drive system, including an electric hydraulic pump, a control valve for directing hydraulic fluid to a load, and an accumulator in fluid communication with the pump and the valve. The method includes the steps of estimating a negative hydraulic-fluid leakage flow out of the accumulator. Using a predetermined model, estimating a negative hydraulic-fluid work flow through the valve, and estimating a first positive fluid flow from the pump into the accumulator. The above estimated negative hydraulic-fluid leakage flow, negative hydraulic-fluid work flow and positive fluid flow are added to a total flow communicating with the accumulator, and a value is obtained of the volume of the hydraulic fluid in the accumulator from the total flow communicating with the accumulator for controlling an operation mode of the pump.

Abstract translation: 控制用于全轮驱动系统的液压系统的方法，包括电动液压泵，用于将液压流体引导到负载的控制阀以及与泵和阀流体连通的蓄能器。 该方法包括以下步骤：估计从蓄能器流出的负的液压流体泄漏流。 使用预定模型，估计通过阀的负的液压流体工作流，以及估计从泵进入蓄能器的第一正向流体流。 将上述估计的负液压流体泄漏流量，负液压流体工作流量和正流体流量加到与蓄能器连通的总流量中，并且从总流量获得蓄能器中的液压流体的体积 与蓄能器通信以控制泵的操作模式。

公开(公告)号：US20080004150A1

公开(公告)日：2008-01-03

申请号：US11766520

申请日：2007-06-21

Applicant: Per-Olof Davidsson ,  Bo Lundstrom ,  Lars Severinsson

Inventor： Per-Olof Davidsson ,  Bo Lundstrom ,  Lars Severinsson

IPC: F16H48/06

CPC classification number: B60K17/35 ,  B60K23/0808 ,  F16D48/0206 ,  F16D2048/0203 ,  F16D2500/1026 ,  F16D2500/10431 ,  F16D2500/1045 ,  F16D2500/5114 ,  F16H48/12 ,  Y10T74/19005 ,  Y10T74/19051 ,  Y10T74/19074

Abstract: The present invention relates to an all-wheel drive system for a vehicle having an engine and a drive shaft, and where the all-wheel drive system is arranged between the drive shaft and front and rear propellable shafts. These shafts are interconnected by first and second clutches resp., and the propellable shafts are coupled to front and rear wheels, for transferring torque from the drive shaft to the front and/or rear wheels. The all-wheel drive system further comprises at least first and second actuators that are coupled to at least first and second clutches, where at least said first clutch is engaged by a spring and at least said first actuator is coupled for disengaging said first clutch when the first actuator is operated. The second actuator is coupled for engaging said second clutch when the second actuator is operated.

Abstract translation: 本发明涉及一种具有发动机和驱动轴的车辆的全轮驱动系统，其中四轮驱动系统布置在驱动轴与前后可推动轴之间。 这些轴通过第一和第二离合器相互连接，并且可推动轴联接到前轮和后轮，用于将扭矩从驱动轴传递到前轮和/或后轮。 四轮驱动系统还包括至少第一和第二致动器，其耦合到至少第一和第二离合器，其中至少所述第一离合器由弹簧接合，并且至少所述第一致动器联接以便当所述第一和第二离合器 第一个致动器被操作。 当第二致动器被操作时，第二致动器被联接以接合所述第二离合器。