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1.发明授权Electronically controlled hydrodynamic retarder with adaptive duty cycles based on decelarations 失效电子控制的流体动力学减速器，具有基于减速的自适应占空比
公开(公告)号：US5351795A
公开(公告)日：1994-10-04
申请号：US938103
申请日：1992-08-31
CPC分类号： B60T10/02 , Y10T477/649 , Y10T477/817 , Y10T477/85
摘要： An electronically controlled hydrodynamic retarder interconnects with the output shaft of a vehicle transmission to selectively apply a braking torque thereto. The retarder includes a solenoid valve, the operating duty cycle of which controls the retarder capacity and resultant braking torque. A control unit, interconnecting the transmission and the retarder, regulates the duty cycle of the solenoid valve to regulate the retarder operation as a function of excessive deceleration or overheating, while also regulating such operation during downshift to assure efficient, effective, and comfortable operation of the transmission/retarder. The retarder is adaptive to accommodate variations resulting from age, wear, and the like.
摘要翻译： 电子控制的液力缓速器与车辆变速器的输出轴相互连接以选择性地向其施加制动转矩。 减速器包括电磁阀，其操作占空比控制延迟器容量和合成制动转矩。 互连变速器和减速器的控制单元调节电磁阀的占空比，以调节作为过度减速或过热的功能的减速器操作，同时在降档期间还调节这种操作，以确保有效，有效和舒适的操作 传输/延迟器。 延迟器适应于适应年龄，磨损等引起的变化。
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公开(公告)号：US5482148A
公开(公告)日：1996-01-09
申请号：US296559
申请日：1994-08-26
申请人： Martin R. Dadel , Charles F. Long
发明人： Martin R. Dadel , Charles F. Long
CPC分类号： F16D55/36 , F16D57/04 , F16D67/04 , F16D2055/0058
摘要： The present invention is directed to a retarder control system for protection against transmission overspeed. The system operates in conjunction with a rotatable input member and an output member that is rotatable relative to the input member. A torque transfer device is operatively connected between the relatively rotatable input and output members. Specifically, a piston assembly is operated by an input control chamber that selectively receives pressurized hydraulic fluid which effects translation of the piston assembly to actuate the torque transfer device and thereby effect a driving connection between the relatively rotatable input and output members. The present system is adapted to control a hydrodynamic retarder assembly having a work cavity to receive hydraulic fluid. The retarder input valve assembly is supported from one of the relatively rotatable members selectively to deliver pressurized hydraulic fluid from the input control chamber to the retarder cavity. In order to achieve overspeed protection the retarder input valve opens in response to a predetermined angular velocity of the relatively rotatable member on which the retarder input valve assembly is supported. In a variation of the retarder control system explained above, a dump valve assembly is provided which opens selectively to release pressurized hydraulic fluid from the work cavity of said retarder in response to the pressure of the hydraulic fluid within said retarder work cavity.
摘要翻译： 本发明涉及一种用于防止传输超速的延迟器控制系统。 该系统与可旋转输入构件和可相对于输入构件旋转的输出构件一起操作。 扭矩传递装置可操作地连接在相对可旋转的输入和输出构件之间。 具体地，活塞组件由输入控制室操作，该输入控制室选择性地接收加压的液压流体，该压力液压流体实现活塞组件的平移以启动扭矩传递装置，从而实现相对可旋转的输入和输出构件之间的驱动连接。 本系统适于控制具有工作腔以接收液压流体的流体动力学延迟器组件。 缓速器输入阀组件从相对可旋转的构件之一选择性地被支撑，以将加压的液压流体从输入控制室输送到延迟器腔。 为了实现超速保护，减速器输入阀响应于在其上支撑减速器输入阀组件的相对可旋转的构件的预定角速度而打开。 在上述减速器控制系统的变型中，提供了一个排气阀组件，其选择性地打开以响应于所述减速器工作腔内的液压流体的压力而从所述减速器的工作腔释放加压的液压流体。
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公开(公告)号：US5456340A
公开(公告)日：1995-10-10
申请号：US86419
申请日：1993-07-02
申请人： Martin R. Dadel , Charles F. Long
发明人： Martin R. Dadel , Charles F. Long
CPC分类号： B60T1/087
摘要： A retarder control embodying the concepts of the present invention utilizes a spool valve having a spool valve member axially translatable between an on- and an off-position. A spring is employed to bias the spool valve member toward its off-position. A torque converter, a cooler and a retarder each have an input and an output that are ported through the spool valve. The retarder is selectively ported to a hydraulic return through the spool valve, and a modulating solenoid may be employed to feed pressurized hydraulic fluid against the spool valve member not only to move the spool valve member against the spring toward its on-position but also to regulate the axial translation of the spool valve member in order to control the pressure at the retarder discharge that is also ported through the spool valve. A cooler communicates directly with the converter when the spool valve member is in its off-position. To the contrary, the cooler communicates directly with the retarder when the spool valve member is in the on-position. First and a second reaction sub-chambers are disposed in opposition against the spool valve member. A spring is received within the first reaction sub-chamber. A modulating solenoid effects continuous communication of pressurized hydraulic fluid to the second reaction sub-chamber when the spool valve member in its on-position, and a conduit selectively communicates pressurized hydraulic fluid to the first reaction chamber.
摘要翻译： 体现本发明概念的延迟器控制利用一个滑阀，该滑阀具有可在开和非位置之间轴向平移的滑阀构件。 使用弹簧将滑阀构件偏压到其关闭位置。 变矩器，冷却器和缓速器各自具有通过滑阀移入的输入和输出。 缓速器通过滑阀选择性地移动到液压返回，并且调节螺线管可以用于将加压的液压流体供给到滑阀构件上，不仅使滑阀构件抵靠弹簧朝向其就位而移动，而且还 调节滑阀构件的轴向平移，以便控制也通过滑阀移动的缓速器排出口的压力。 当滑阀构件处于其关闭位置时，冷却器直接与转换器通信。 相反，当滑阀构件处于就位时，冷却器与减速器直接连通。 第一和第二反应子室相对于滑阀构件设置。 在第一反应子室内接收弹簧。 当滑阀构件处于其位置时，调节螺线管使得加压液压流体连续地连通到第二反应子室，并且导管选择性地将加压的液压流体连通到第一反应室。
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公开(公告)号：US5119914A
公开(公告)日：1992-06-09
申请号：US776013
申请日：1991-10-15
CPC分类号： F16D48/02 , F16D25/14 , F16D48/066 , F16D2048/0203 , F16D2048/0215 , F16D2048/0221
摘要： An accumulator and relay valve is operable to isolate a fluid operated electric switch from the transient pressure pulses present at the output of a pulse-width-modulated pressure control valve. The accumulator and relay valve is further operable to control a minimum pressure level that is communicated from the pressure control valve to the switch.
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公开(公告)号：US5101941A
公开(公告)日：1992-04-07
申请号：US599198
申请日：1990-10-17
申请人： Charles F. Long , Martin R. Dadel
发明人： Charles F. Long , Martin R. Dadel
摘要： A hydraulic retarder is disposed to receive fluid as directed by a flow valve to selectively retard vehicle motion. The flow valve responds to an operator controlled modulator valve to direct fluid from a cooler which is supplied from a torque converter to the hydraulic retarder upon a request by the operator. A modulator valve is also effective to control the pressure of the fluid exiting the cooler and entering the retarder.
摘要翻译： 液压缓速器设置成接收由流量阀引导的流体以选择性地延迟车辆运动。 流量阀响应于操作者控制的调节阀，以根据操作者的要求将流体从来自变矩器的液体缓冲器供给液压缓速器。 调节阀也有效地控制离开冷却器并进入减速器的流体的压力。
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