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11. 发明授权

US06283887B1 Transfer case with synchronized range shift and adaptive clutch control 有权
标题翻译：传动箱同步量程变速和自适应离合器控制
公开(公告)号：US06283887B1
公开(公告)日：2001-09-04
申请号：US09512960
申请日：2000-02-25
申请人： David Brown , Richard E. Eastman , Sankar K. Mohan , Nancy Mintonye
发明人： David Brown , Richard E. Eastman , Sankar K. Mohan , Nancy Mintonye
IPC分类号： B60K17344
CPC分类号： B60K23/0808 , B60K17/3467
摘要： A full-time power transfer system is disclosed to include a transfer case having a clutch assembly arranged to control speed differentiation and torque biasing across an interaxle differential, sensors for detecting and generating sensor signals indicative of various dynamic and operational characteristics of the vehicle, and a controller for controlling actuation of the clutch assembly in response to the sensor signals. Upon the occurrence of traction loss, the clutch assembly is automatically actuated for limiting interaxle slip while transferring increased drive torque to the non-slipping driveline. Under a preferred adaptive control scheme, the actuated condition of the clutch assembly is controllably modulated between its non-actuated and fully-actuated limits for automatically varying the magnitude of speed differentiation and torque biasing across the interaxle differential in response to changes in the dynamic and operational characteristics of the vehicle.
摘要翻译：公开了一种全职电力传输系统，其包括具有离合器组件的传送箱，该离合器组件布置成控制跨越差速器间的速度差异和扭矩偏置，用于检测和产生指示车辆的各种动态和操作特性的传感器信号的传感器，以及用于响应于传感器信号控制离合器组件的致动的控制器。在发生牵引损失时，离合器组件被自动地启动，以限制桥间滑动，同时将增加的驱动扭矩传递到非滑动传动系。在优选的自适应控制方案下，离合器组件的致动状态在其非致动和完全致动极限之间被可控制地调节，用于响应于动态和变化的自动变化而自动改变横跨差速器的速度差异的大小和扭矩偏置车辆的运行特性。

12. 发明授权

US5332060A Linear actuation mechanism for electronically-controlled torque modulated transfer case 失效
标题翻译：用于电控转矩调制传动箱的直线致动机构
公开(公告)号：US5332060A
公开(公告)日：1994-07-26
申请号：US28956
申请日：1993-03-10
申请人： David Sperduti , Robert J. Wilson , Richard E. Eastman , Randy W. Adler , Sankar K. Mohan
发明人： David Sperduti , Robert J. Wilson , Richard E. Eastman , Randy W. Adler , Sankar K. Mohan
IPC分类号： B60K17/344 , B60K17/35 , B60K23/08 , F16H59/44 , F16H59/46 , B60K17/34
CPC分类号： B60K23/0808 , B60K17/344 , B60K17/35 , B60W2520/263 , B60W2540/12 , B60W2710/022 , F16H59/44 , F16H59/46
摘要： The present invention is directed to an improved "on-demand" power transfer system of the type having a transfer mechanism incorporated into the driveline of a four-wheel drive vehicle. The transfer mechanism is arranged to deliver drive torque to the driven wheels so as to establish a two-wheel drive mode of operation. In addition, the transfer mechanism is equipped with a clutch assembly for selectively delivering drive torque to the non-driven wheels for establishing a four-wheel drive mode of operation. The transfer mechanism is further equipped with a linear actuator mechanism for actuating the clutch assembly. The linear actuator mechanism is preferably mounted directly to the transfer mechanism to substantially minimize the packaging requirements associated with the on-demand power transfer system while concomitantly enhancing in-service reliability and allowing pre-assembly of the transfer mechanism prior to final installation into the vehicle driveline. The power transfer system further includes sensors for detecting various dynamic and operational characteristics of the vehicle and generating sensor input signals indicative thereof, and a controller for controlling actuation of the linear actuator means in response to the sensor input signals.
摘要翻译：本发明涉及一种改进的“按需”动力传递系统，其具有结合到四轮驱动车辆的传动系中的传送机构。传动机构被布置成将驱动扭矩传递到从动轮，以便建立两轮驱动操作模式。此外，传送机构配备有离合器组件，用于选择性地将驱动扭矩输送到非从动轮以建立四轮驱动操作模式。传送机构还配备有用于致动离合器组件的线性致动器机构。线性致动器机构优选地直接安装到传送机构上，以大大减少与按需电力传送系统相关联的包装要求，同时增强了在役可靠性，并允许在最终安装到车辆之前预先组装传送机构传动系。电力传输系统还包括用于检测车辆的各种动态和操作特性并产生指示其的传感器输入信号的传感器，以及用于响应于传感器输入信号控制线性致动器装置的致动的控制器。

13. 发明授权

US5078660A Transfer case limited slip planetary differential 失效
标题翻译：传动箱限滑行星差速器
公开(公告)号：US5078660A
公开(公告)日：1992-01-07
申请号：US690085
申请日：1991-04-23
申请人： Randolph C. Williams , Richard E. Eastman , S. K. Varma
发明人： Randolph C. Williams , Richard E. Eastman , S. K. Varma
IPC分类号： B60K17/346
CPC分类号： B60K17/3467 , B60K17/3465
摘要： A transfer case for a four wheel drive vehicle providing a central shaft defining a first output concentrically surrounded by a forward high/low drive range gear set and an aft dual planetary inter-axle differential gear set. A range clutch collar is disposed between the gear sets for selectively providing four wheel drive low range, neutral, and full-time four wheel drive high range. Likewise, a mode sleeve is disposed between the gear sets for selectively locking the differential gear set when the vehicle is shifted into its four wheel low range. Inner and outer relatively rotational drum housings surrounded the aft dual planetary differential gear set for defining an annular viscous fluid coupling chamber therebetween. The inner drum is formed with internal annulus gear teeth meshed with a portion of the dual planetary gear set for rotation with the first output shaft while the outer drum is interconnected to a second output for providing full-time four wheel drive differentiation with limited slip between the first and second outputs.
摘要翻译：用于四轮驱动车辆的传送箱，其提供中心轴，其限定同心地被前进高/低驱动范围齿轮组和后双行星齿轮间差速齿轮组包围的第一输出。齿轮组之间设置了一个范围离合器套环，用于选择性地提供四轮驱动低范围，中性和全时四轮驱动高范围。类似地，模式套筒设置在齿轮组之间，用于当车辆移动到其四轮低范围内时选择性地锁定差速齿轮组。内部和外部相对旋转的滚筒外壳包围后部双行星差速齿轮组，用于在它们之间限定环形粘性流体联接室。内滚筒形成有与双行星齿轮组的一部分啮合的内环形齿轮齿，用于与第一输出轴一起旋转，而外鼓与第二输出相互连接，以提供全时四轮驱动差速，第一和第二输出。

14. 发明授权

US4601359A Part time on-demand four-wheel drive vehicle transaxle with viscous clutch 失效
标题翻译：配备粘性离合器的按需四轮驱动车辆变速驱动桥
公开(公告)号：US4601359A
公开(公告)日：1986-07-22
申请号：US743215
申请日：1985-06-10
申请人： Peter H. Weismann , Dugald Cameron , Richard E. Eastman
发明人： Peter H. Weismann , Dugald Cameron , Richard E. Eastman
IPC分类号： B60K17/346 , F16D35/00 , F16H48/22 , B60K17/02
CPC分类号： F16D35/005 , B60K17/3465 , Y10T74/19088
摘要： A dual bevel gear differential transaxle assembly for a front transverse engine vehicle with front and rear pairs of road wheels providing a part time on-demand four-wheel drive system. Interaxle and front wheel bevel gear differentials are aligned on a transverse axis. The differentials are connected by a side gear shaft and inner and outer side gear sleeves concentric about the side gear shaft. The interaxle differential achieves front axle to rear axle differentiation while the front wheel differential provides differentiation for the front pair of road wheels. The dual differential transaxle assembly includes viscous fluid clutch means providing an automatic limited slip condition of the interaxle differential when there is a predetermined difference in speed or rpm between the front and rear pair of road wheels.
摘要翻译：一种用于前横向发动机车辆的双锥齿轮差速器驱动桥组件，其具有前轮和后部车轮对，提供兼职按需四轮驱动系统。座轴和前轮锥齿轮差速器在横向轴线上对齐。差速器由侧齿轮轴和内侧和外侧齿轮套筒围绕侧齿轮轴同心连接。齿轮间差速器实现了前轴到后轴的差速，而前轮差速器为前轮对的车轮提供了差异化。双差速器驱动桥组件包括粘性流体离合器装置，当在前轮和后轮对的车轮之间存在预定的速度差或转速时，提供齿间差速器的自动限滑条件。

15. 发明授权

US06398688B2 On-demand transfer case with synchronized range shift and adaptive clutch control 失效
标题翻译：具有同步范围换档和自适应离合器控制的按需转移箱
公开(公告)号：US06398688B2
公开(公告)日：2002-06-04
申请号：US09883701
申请日：2001-06-18
申请人： David Brown , Richard E. Eastman , Sankar K. Mohan , Nancy Mintonye
发明人： David Brown , Richard E. Eastman , Sankar K. Mohan , Nancy Mintonye
IPC分类号： B60K17344
CPC分类号： B60K23/0808 , B60K17/3467
摘要： A full-time power transfer system is disclosed to include a transfer case having a clutch assembly arranged to control speed differentiation and torque biasing across an interaxle differential, sensors for detecting and generating sensor signals indicative of various dynamic and operational characteristics of the vehicle, and a controller for controlling actuation of the clutch assembly in response to the sensor signals. Upon the occurrence of traction loss, the clutch assembly is automatically actuated for limiting interaxle slip while transferring increased drive torque to the non-slipping driveline. Under a preferred adaptive control scheme, the actuated condition of the clutch assembly is controllably modulated between its non-actuated and fully-actuated limits for automatically varying the magnitude of speed differentiation and torque biasing across the interaxle differential in response to changes in the dynamic and operational characteristics of the vehicle.
摘要翻译：公开了一种全职电力传输系统，其包括具有离合器组件的传送箱，该离合器组件布置成控制跨越差速器间的速度差异和扭矩偏置，用于检测和产生指示车辆的各种动态和操作特性的传感器信号的传感器，以及用于响应于传感器信号控制离合器组件的致动的控制器。在发生牵引损失时，离合器组件被自动地启动，以限制桥间滑动，同时将增加的驱动扭矩传递到非滑动传动系。在优选的自适应控制方案下，离合器组件的致动状态在其非致动和完全致动极限之间被可控制地调节，用于响应于动态和变化的自动变化而自动改变横跨差速器的速度差异的大小和扭矩偏置车辆的运行特性。

16. 发明授权

US5346442A Range shift arrangement for four-wheel drive vehicles 失效
标题翻译：四轮驱动车辆的换档安排
公开(公告)号：US5346442A
公开(公告)日：1994-09-13
申请号：US932289
申请日：1992-08-19
申请人： Richard E. Eastman
发明人： Richard E. Eastman
IPC分类号： B60K17/344 , B60K17/346 , B60K23/08 , F16D23/06 , F16H63/30 , F16H37/06
CPC分类号： F16H63/30 , B60K17/344 , B60K17/3467 , B60K23/08 , F16D23/06 , F16H2063/3093
摘要： A synchronized shift arrangement is disclosed for shifting a planetary-type gear reduction assembly from a low-range operating mode to a high-range operating mode. This arrangement is particularly adapted for use in vehicular power transfer devices, such as four-wheel drive transfer cases, for allowing the vehicle operator to shift "on-the-fly" from a four-wheel low-range drive mode to a four-wheel high-range drive mode without the need of stopping the motor vehicle. In a preferred embodiment, the power transfer apparatus includes a housing, a first member supported for rotation in the housing, a second member supported in the housing for rotation relative to the first member, a planetary gear assembly coupled to the first member for rotatably driving an output member thereof at a reduced ratio relative to the first member, and a clutch sleeve supported for rotation with the second member and which is movable between a first position for coupling the second member to the output member of the planetary gear assembly for rotatably driving the second member at the reduced ratio, and a second position for coupling the second member for rotation with the first member. The power transfer apparatus further includes a synchronizer for causing speed synchronization between the first and second members in response to movement of the clutch sleeve from the first position to said second position.
摘要翻译：公开了一种用于将行星齿轮减速组件从低范围操作模式转换到高范围操作模式的同步换挡装置。这种布置特别适用于车辆动力传递装置，例如四轮驱动传送箱，用于允许车辆操作者将“从速”从四轮低档驱动模式转移到四轮驱动传动装置，车轮高档驾驶模式，无需停车。在优选实施例中，动力传递装置包括壳体，被支撑为在壳体中旋转的第一构件，支撑在壳体中以相对于第一构件旋转的第二构件，联接到第一构件以用于可旋转地驱动的行星齿轮组件其输出构件以相对于第一构件的减小的比例和与第二构件一起旋转的离合器套筒，该离合器套筒可在用于将第二构件联接到行星齿轮组件的输出构件的第一位置之间移动，用于可旋转地驱动所述第二构件以减小的比例，以及第二位置，用于将所述第二构件与所述第一构件联接。动力输送装置还包括同步器，用于响应于离合器套筒从第一位置到所述第二位置的运动而使第一和第二构件之间的速度同步。

17. 发明授权

US4862755A Transfer case planetary with annulus gear power takeoff 失效
标题翻译：传动箱行星与环形齿轮动力起飞
公开(公告)号：US4862755A
公开(公告)日：1989-09-05
申请号：US287579
申请日：1988-12-15
申请人： Richard E. Eastman , Anand M. Jagani
发明人： Richard E. Eastman , Anand M. Jagani
IPC分类号： B60K17/344
CPC分类号： B60K17/344 , Y10T74/19237
摘要： An improved power takeoff arrangement for a vehicle four-wheel drive transfer case having high, neutral and low positions. The transfer case input shaft has a integral gear member defining the sun gear of a dual planetary gear assembly having its carrier rings grounded to the transfer case housing. A planetary annulus gear, formed with an inboard axial extension concentrically surrounding the inboard carrier ring, is driven by dual planet pinion gear sets journally supported between the carrier rings. The annulus gear inboard extension is formed with external helical gear teeth adapted to mesh with a power takeoff input gear accessible through an aperture in the housing side wall. The arrangement enables power at a constant relative speed to be transferred from the transfer case input shaft to the power takeoff gear in any of its three positions while obviating unbalanced loading of the dual pinion planetary assembly.
摘要翻译：用于具有高，中立和低位置的车辆四轮驱动转移箱的改进的动力输出装置。传送箱输入轴具有一个整体的齿轮构件，其限定了一个双行星齿轮组件的太阳轮，该行星齿轮组件的承载环接地到转移箱壳体上。形成有同轴地围绕内侧载体环的内侧轴向延伸的行星环形齿轮由轴承支撑在承载环之间的双行星小齿轮组驱动。内侧延伸部的环形齿轮形成有适于与通过壳体侧壁中的孔可接近的动力输出齿轮啮合的外部斜齿轮齿。该布置使得能够以恒定的相对速度的功率在其三个位置中的任何一个中从转移箱输入轴传递到动力输出齿轮，同时消除双小齿轮行星组件的不平衡负载。

18. 发明授权

US06554731B2 On-demand transfer case with synchronized range shift and adaptive clutch control 有权
公开(公告)号：US06554731B2
公开(公告)日：2003-04-29
申请号：US10161265
申请日：2002-06-03
申请人： David Brown , Richard E. Eastman , Sankar K. Mohan , Nancy Mintonye
发明人： David Brown , Richard E. Eastman , Sankar K. Mohan , Nancy Mintonye
IPC分类号： B60K17344
CPC分类号： B60K23/0808 , B60K17/3467
摘要： A full-time power transfer system is disclosed to include a transfer case having a clutch assembly arranged to control speed differentiation and torque biasing across an interaxle differential, sensors for detecting and generating sensor signals indicative of various dynamic and operational characteristics of the vehicle, and a controller for controlling actuation of the clutch assembly in response to the sensor signals. Upon the occurrence of traction loss, the clutch assembly is automatically actuated for limiting interaxle slip while transferring increased drive torque to the non-slipping driveline. Under a preferred adaptive control scheme, the actuated condition of the clutch assembly is controllably modulated between its non-actuated and fully-actuated limits for automatically varying the magnitude of speed differentiation and torque biasing across the interaxle differential in response to changes in the dynamic and operational characteristics of the vehicle.

19. 发明授权

US06354977B1 Transfer case with hydraulic range shift and adaptive clutch control 失效
标题翻译：液压换档和自适应离合器控制的转箱
公开(公告)号：US06354977B1
公开(公告)日：2002-03-12
申请号：US09514057
申请日：2000-02-25
申请人： David Brown , Richard E. Eastman , Sankar K. Mohan , Nancy Mintonye
发明人： David Brown , Richard E. Eastman , Sankar K. Mohan , Nancy Mintonye
IPC分类号： F16H3708
CPC分类号： B60K17/3467 , B60K17/26 , B60K17/35 , B60K23/08 , B60K23/0808
摘要： A power transfer system for a motor vehicle is disclosed to include a transfer case having a clutch assembly arranged to control speed differentiation and torque biasing across an interaxle differential, a hydraulic clutch actuation system operable to control actuation of the clutch assembly, sensors for detecting and generating sensor signals indicative of various dynamic and operational characteristics of the vehicle, and a controller for controlling the hydraulic clutch actuation system in response to the sensor signals. Upon the occurrence of traction loss, the clutch assembly is automatically actuated for limiting interaxle slip while transferring increased drive torque to the non-slipping driveline. Under a preferred control scheme, the actuated condition of the clutch assembly is controllably modulated between its non-actuated and fully-actuated limits for automatically varying the magnitude of speed differentiation and torque biasing across the interaxle differential in response to changes in the operational characteristics of the motor vehicle. As a further feature of the present invention, the transfer case can be equipped with a gearset and a hydraulically-actuated range shift mechanism for permitting on-the-move shifting between high-range and low-range drive modes.
摘要翻译：公开了一种用于机动车辆的动力传递系统，其包括具有离合器组件的传送箱，该离合器组件布置成控制跨越差速器的速度差异和扭矩偏置，可操作以控制离合器组件的致动的液压离合器致动系统，产生指示车辆的各种动态和操作特性的传感器信号，以及用于响应于传感器信号控制液压离合器致动系统的控制器。在发生牵引损失时，离合器组件被自动地启动，以限制桥间滑动，同时将增加的驱动扭矩传递到非滑动传动系。在优选的控制方案下，离合器组件的致动状态在其非致动和完全致动的极限之间被可控制地调节，用于响应于操作特性的变化自动地改变横跨差速器的速度差异的大小和转矩偏置汽车。作为本发明的另一个特征，传送箱可以配备有齿轮组和液压致动的范围换档机构，用于允许在高范围和低范围驱动模式之间的移动换档。

20. 发明授权

US5951429A Synchronized range shift mechanism for transfer case 失效
公开(公告)号：US5951429A
公开(公告)日：1999-09-14
申请号：US120432
申请日：1998-07-22
申请人： Richard E. Eastman
发明人： Richard E. Eastman
IPC分类号： B60K17/346 , F16H37/08
CPC分类号： B60K17/3462 , B60K17/3467 , B60K17/3465
摘要： A transfer case for a four-wheel drive vehicle having a planetary gear assembly and a synchronized range clutch which can be selectively shifted on-the-move for establishing four-wheel high-range and low-range drive modes.

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