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公开(公告)号：US4968227A
公开(公告)日：1990-11-06
申请号：US448403
申请日：1989-12-11
IPC分类号： F04B1/06 , F04B1/107 , F04B27/067 , F04B49/12
CPC分类号： F04B1/1071 , F04B1/066 , F04B27/0676 , F04B49/128
摘要： A variable displacement, rotary fluid pressure pump (11) is disclosed of the type having a cam ring member (25) which is movable, in response to rotation of a control shaft (35), between a neutral position (FIG. 5) and a displaced position (FIG. 4). The pump housing (13, 15) includes a support member (25), and they cooperate to define a high-pressure fluid passage (51). In communication with the passage (51) is a recess (71), in which is disposed a dampening shoe (73). The dampening shoe is biased by high-pressure fluid in the passage (51) into engagement with an adjacent surface (77) of the cam ring (25). The surface (77) defines a neutral fluid passage (79), and the dampening shoe (73) defines a restricted opening (85). When the cam ring (25) is in the displaced position, the restricted opening (85) is blocked from communication with the neutral passage (79), but as the cam ring is returned to its neutral position, the opening (85) begins to communicate with the neutral passage (79), thus providing the pump with an increased neutral band overlap.
摘要翻译： 公开了一种具有凸轮环构件（25）的类型的可变排量的旋转流体压力泵（11），该凸轮环构件可响应于控制轴（35）在中间位置（图5）和 位移位置（图4）。 泵壳体（13,15）包括支撑构件（25），并且它们配合以限定高压流体通道（51）。 与通道（51）连通的是凹槽（71），其中设置有阻尼鞋（73）。 阻尼鞋被通道（51）中的高压流体偏压成与凸轮环（25）的相邻表面（77）接合。 所述表面（77）限定中性流体通道（79），所述阻尼滑板（73）限定限制开口（85）。 当凸轮环（25）处于位移位置时，限制开口（85）被阻止与中性通路（79）的连通，但是当凸轮环返回其中立位置时，开口（85）开始 与中性通道（79）连通，从而为泵提供增加的中性带重叠。
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公开(公告)号：US08596051B2
公开(公告)日：2013-12-03
申请号：US12580997
申请日：2009-10-16
申请人： David Malaney , Glenn Clark Fortune , Dennis E. Szulczewski , Michel A. Beyer , Thomas Joseph Stoltz
发明人： David Malaney , Glenn Clark Fortune , Dennis E. Szulczewski , Michel A. Beyer , Thomas Joseph Stoltz
IPC分类号： F16D31/02
CPC分类号： F15B21/008 , F15B21/08 , F15B2211/20523 , F15B2211/20538 , F15B2211/30525 , F15B2211/351 , F15B2211/411 , F15B2211/41509 , F15B2211/427 , F15B2211/455 , F15B2211/625 , F15B2211/633 , F15B2211/71 , Y10T137/0318
摘要： A hydraulic system includes a power source, a fluid displacement assembly, a plurality of actuators, a plurality of control valves and an electronic control unit. The fluid displacement assembly is coupled to the power source. The plurality of actuators is in selective fluid communication with the fluid displacement assembly. The plurality of control valves is adapted to provide selective fluid communication between the fluid displacement assembly and the plurality of actuators. The electronic control unit is adapted to actuate the plurality of control valves, the electronic control unit receives a rotational speed of the power source, determines a firing frequency of the power source based on the rotational speed, selects a frequency of the pulse width modulation signal for the plurality of control valves based on the firing frequency of the power source, and actuates the plurality of control valves in accordance with the frequency of the pulse width modulation signal.
摘要翻译： 液压系统包括动力源，流体排量组件，多个致动器，多个控制阀和电子控制单元。 流体位移组件耦合到电源。 多个致动器与流体位移组件选择性地流体连通。 多个控制阀适于在流体移动组件和多个致动器之间提供选择性的流体连通。 电子控制单元适于致动多个控制阀，电子控制单元接收电源的转速，基于转速确定电源的点火频率，选择脉宽调制信号的频率 对于多个控制阀，基于电源的点火频率，并根据脉冲宽度调制信号的频率来驱动多个控制阀。
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公开(公告)号：US20100132798A1
公开(公告)日：2010-06-03
申请号：US12580997
申请日：2009-10-16
申请人： David Malaney , Glenn Clark Fortune , Dennis E. Szulczewski , Michel A. Beyer , Thomas Joseph Stoltz
发明人： David Malaney , Glenn Clark Fortune , Dennis E. Szulczewski , Michel A. Beyer , Thomas Joseph Stoltz
CPC分类号： F15B21/008 , F15B21/08 , F15B2211/20523 , F15B2211/20538 , F15B2211/30525 , F15B2211/351 , F15B2211/411 , F15B2211/41509 , F15B2211/427 , F15B2211/455 , F15B2211/625 , F15B2211/633 , F15B2211/71 , Y10T137/0318
摘要： A hydraulic system includes a power source, a fluid displacement assembly, a plurality of actuators, a plurality of control valves and an electronic control unit. The fluid displacement assembly is coupled to the power source. The plurality of actuators is in selective fluid communication with the fluid displacement assembly. The plurality of control valves is adapted to provide selective fluid communication between the fluid displacement assembly and the plurality of actuators. The electronic control unit is adapted to actuate the plurality of control valves, the electronic control unit receives a rotational speed of the power source, determines a firing frequency of the power source based on the rotational speed, selects a frequency of the pulse width modulation signal for the plurality of control valves based on the firing frequency of the power source, and actuates the plurality of control valves in accordance with the frequency of the pulse width modulation signal.
摘要翻译： 液压系统包括动力源，流体排量组件，多个致动器，多个控制阀和电子控制单元。 流体位移组件耦合到电源。 多个致动器与流体位移组件选择性地流体连通。 多个控制阀适于在流体移动组件和多个致动器之间提供选择性的流体连通。 电子控制单元适于致动多个控制阀，电子控制单元接收电源的转速，基于转速确定电源的点火频率，选择脉宽调制信号的频率 对于多个控制阀，基于电源的点火频率，并根据脉冲宽度调制信号的频率来驱动多个控制阀。
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4.发明授权
公开(公告)号：US5289738A
公开(公告)日：1994-03-01
申请号：US980136
申请日：1992-11-23
IPC分类号： B60K17/10 , F16H47/02 , F16H57/02 , F16H57/023 , F16H57/037
CPC分类号： F16H57/037 , B60K17/105 , F16H2057/02052 , F16H2057/02056 , F16H2057/0235 , Y10T74/2186
摘要： A hydrostatic transaxle is disclosed of the type including a hydrostatic transmission (11;221), a differential gear means (19;243), and first (21;213) and second (23;215) axle shafts. The hydrostatic transmission includes a transmission case (34;229,231) having a second case portion (31;231) including an output hub portion (97;235). The transaxle includes axle housing casing halves 133,135:209,211) joined together on a plane containing the axis of rotation of the axle shafts, and including an output portion (163,165;209,211) in tight engagement about the output hub portion. Another portion (173;229,231,249) of the transmission case cooperates with one of the axle casing halves to define a secondary mounting means and a torque reaction means which, together with the output hub portion, comprise the only portions of the transmission case operatively associated with the axle housing (131;208). The disclosed mounting or coupling of the hydrostatic transmission and the axle housing makes it possible to integrate the hydrostatic transmission and gear axle assembly, while at the same time segregating the hydraulic fluid of the hydrostatic transmission from the lubricant of the gear axle assembly, but still simplifying the overall structure of the assembly.
摘要翻译： 公开了一种静液压驱动桥，其类型包括静液压传动装置（11; 221），差动齿轮装置（19; 243）以及第一（21,213）和第二（23; 215）轴。 静液压变速器包括具有包括输出轮毂部分（97; 235）的第二壳体部分（31; 231）的变速箱（34; 229,231）。 变速驱动桥包括在包含车轴的旋转轴线的平面上连接在一起的轴壳半壳133,135：209,211），并且包括围绕输出轮毂部分紧密接合的输出部分（163,165,209,211）。 变速器壳体的另一部分（173; 229,231,249）与轴壳半体中的一个配合以限定次级安装装置和扭矩反作用装置，其与输出轮毂部分一起包括仅与变速箱的部分可操作地相关联 轴壳体（131; 208）。 所公开的静液压变速器和轴壳体的安装或联接使得可以将静液压变速器和齿轮轴组件结合在一起，同时将静液压变速器的液压流体与齿轮轴组件的润滑剂隔离，但仍然 简化了组件的整体结构。
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