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公开(公告)号：US5171073A
公开(公告)日：1992-12-15
申请号：US608936
申请日：1990-11-05
申请人： Shohei Matsuda , Jiro Suzuki , Kazutoshi Tashima , Takeshi Kojima , Kohichi Furuya , Masaaki Myoi
发明人： Shohei Matsuda , Jiro Suzuki , Kazutoshi Tashima , Takeshi Kojima , Kohichi Furuya , Masaaki Myoi
CPC分类号： B60T8/4081 , B60T13/18 , B60T8/341 , B60T8/4225 , B60T8/489 , B60T8/94 , F16D25/14 , F16D48/02 , F16D48/04 , F16D2048/0209
摘要： A hydraulic pressure control system has a hydraulic pressure control valve which includes a spool slidably received in a housing for axial sliding movement between a rear position in which it permits the communication between an output port and a release port and a front position in which it permits communication between an input port and the output port. The hydraulic pressure control system also has a reaction chamber connected to the output port for providing a hydraulic pressure for biasing the spool rearwardly, and an input pressure working chamber for providing a hydraulic pressure for biasing the spool forwardly, a differential pressure regulating valve is interposed between the output port and the reaction chamber and adapted to be opened in response to the hydraulic pressure from the output port becoming higher than the hydraulic pressure in the reaction chamber by a predetermined value therefor. At an initial stage of the beginning of application of the hydraulic pressure to the input pressure working chamber, the application of the hydraulic pressure to the reaction chamber is cut off, so that the output hydraulic pressure from the output port can be rapidly increased with the spool kept located in the front position to provide a smooth initial operation of the hydraulically operated device connected to the output port.
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公开(公告)号：US5169213A
公开(公告)日：1992-12-08
申请号：US584661
申请日：1990-09-19
申请人： Shohei Matsuda , Jiro Suzuki , Kazutoshi Tashima , Takeshi Kojima
发明人： Shohei Matsuda , Jiro Suzuki , Kazutoshi Tashima , Takeshi Kojima
IPC分类号： B60T8/175 , B60T8/48 , B60W10/04 , B60W10/18 , B60W10/188
摘要： A method for traction control of a vehicle, includes detecting a slipping tendency of a drive wheel in a driven state, and controlling the braking force of a drive wheel brake device in an increasing and decreasing manner in accordance with the degree of the detected slipping tendency, wherein a rapid increase mode of rapidly increasing the braking force of the drive wheel brake device and a slow increase mode of slowly increasing the braking force can be switched from one to the other, so that at an initial stage in increasing the braking force of the drive wheel brake device on the basis of the decision that the drive wheel is in an excessive slipping tendency, the braking force is increased in the rapid increase mode.
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公开(公告)号：US5106170A
公开(公告)日：1992-04-21
申请号：US707935
申请日：1991-05-28
申请人： Shohei Matsuda , Jiro Suzuki , Ysuyoshi Satoh , Kazutoshi Tashima
发明人： Shohei Matsuda , Jiro Suzuki , Ysuyoshi Satoh , Kazutoshi Tashima
IPC分类号： B60T8/26 , B60T8/34 , B60T8/36 , B60T8/40 , B60T8/42 , B60T8/44 , B60T8/48 , B60T8/94 , B60T13/12 , B60T13/14
CPC分类号： B60T8/4081 , B60T13/147 , B60T8/26 , B60T8/341 , B60T8/36 , B60T8/4225 , B60T8/441 , B60T8/4863 , B60T8/94
摘要： In a hydraulic braking pressure control system including an auxiliary hydraulic pressure generating unit capable of generating a hydraulic pressure in accordance with the braking operation of a brake pedal, and a hydraulic pressure supply source hydraulic pressure control unit interposed between a hydraulic pressure supply source and a brake device for controlling the hydraulic pressure from the hydraulic pressure supply source in accordance with the braking operation of the brake pedal, the hydraulic pressure chamber in the auxiliary hydraulic pressure generating unit is connected to the supply source hydraulic pressure control unit, so that the output hydraulic pressure therefrom is applied as a control pressure. When the hydraulic pressure from the hydraulic pressure supply source has been abnormally reduced, a braking pressure from the auxiliary hydraulic pressure generating unit is applied to the brake device in response to an opening of the on-off valve. During braking in a condition in which the hydraulic pressure from the hydraulic pressure supply source is normal, the operation of the hydraulic pressure regulating unit avoids the hydraulic pressure from the auxiliary hydraulic pressure generating unit from being applied to the brake device.
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公开(公告)号：US4995677A
公开(公告)日：1991-02-26
申请号：US492022
申请日：1990-03-12
申请人： Shohei Matsuda , Jiro Suzuki , Tsuyoshi Sato , Kazutoshi Tashima
发明人： Shohei Matsuda , Jiro Suzuki , Tsuyoshi Sato , Kazutoshi Tashima
CPC分类号： B60T8/4081 , B60T13/145 , B60T13/147 , B60T8/4225 , B60T8/441 , B60T8/4863 , B60T8/94
摘要： In a hydraulic braking pressure control system comprising an auxiliary hydraulic pressure generator connected to a brake device for generating a hydraulic pressure depending upon a braking operation by a brake pedal; a supply source; a supply source pressure control device controlling the pressure from the supply source in accordance with the braking operation by the brake pedal; pressure transmitting device interposed in a hydraulic pressure path extending from the supply source via the supply source pressure control device to the brake device arranged to permit the transmission of the hydraulic pressure output from the supply source pressure control device to the brake device when the hydraulic pressure in the supply source is normal and to cut off the flowing of a working fluid from the brake device toward the supply source when the hydraulic pressure in the supply source is abnormally reduced; and an on-off valve interposed between the auxiliary hydraulic pressure generator and the brake device, having a pilot chamber leading to an output port of the supply source pressure control device, and adapted to be closed in response to an increase in the hydraulic pressure in the pilot chamber. The on-off valve is closed by rising of the output hydraulic pressure from the supply source pressure control device prior to rising of the output hydraulic pressure from the auxiliary hydraulic pressure generator during a braking operation by the brake pedal.
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公开(公告)号：US5269596A
公开(公告)日：1993-12-14
申请号：US900773
申请日：1992-06-22
摘要： A traction control method for a vehicle according to the present invention for generating braking forces in the brake devices for driving wheels when excessive slipping has occurred in the drive wheels involves an independent control mode for independently controlling respective braking forces of the plurality of drive-wheel brake devices and a collective control mode for collectively controlling the braking forces. These two control modes are interchangeable with each other. This enables traction control which can insure both reliable driving force and high stability.
摘要翻译： 根据本发明的用于在驱动轮中发生过度滑动时在用于驱动车轮的制动装置中产生制动力的牵引力控制方法包括用于独立地控制多个驱动轮的各个制动力的独立控制模式 制动装置和用于集体控制制动力的集体控制模式。 这两种控制模式可互换。 这使牵引力控制能够确保可靠的驱动力和高稳定性。
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公开(公告)号：US5634338A
公开(公告)日：1997-06-03
申请号：US479584
申请日：1995-06-07
CPC分类号： B60T8/4081 , B60T13/145 , B60T8/341 , B60T8/4225 , B60T8/441 , B60T8/4863
摘要： A fluid pressure control device has a sliding member fitted in a housing for switching over the connection and the disconnection between an input port connected to a fluid pressure supply source, an output port connected to a fluid pressure operated device and a release port connected to a reservoir; a reaction chamber for generating a fluid pressure urging the sliding member in a retracting direction; an urging piston operatively connected to the rear end of the sliding member; an input piston operatively connected to an operation member; and a pressure chamber formed between a back surface of the urging piston and a front surface of the input piston; wherein a first pressure receiving area of the sliding member exposed to the reaction chamber is set smaller than a second pressure receiving area of the urging piston exposed to the pressure chamber, and the second pressure receiving area is set smaller than a third pressure receiving area of the input piston exposed to the pressure chamber. The ratio of the pressure receiving area of the urging piston, exposed to the pressure chamber to the pressure receiving area of the sliding member, exposed to the reaction chamber is greater than a ratio of the pressure receiving area of the input piston, exposed to the pressure chamber of the urging piston, exposed to the pressure chamber (i.e., A.sub.2 /A.sub.1 >A.sub.3 /A.sub.2).
摘要翻译： 流体压力控制装置具有安装在壳体中用于切换连接的滑动构件和连接到流体压力供给源的输入端口，连接到流体压力操作装置的输出端口和连接到流体压力供给源的释放端口之间的断开 水库 用于产生沿着缩回方向推动滑动构件的流体压力的反应室; 可操作地连接到滑动构件的后端的推动活塞; 可操作地连接到操作构件的输入活塞; 以及形成在所述推压活塞的后表面和所述输入活塞的前表面之间的压力室; 其中暴露于所述反应室的所述滑动构件的第一受压面积被设定为小于暴露于所述压力室的所述推压活塞的第二受压面积，并且所述第二受压面积被设定为小于 输入活塞暴露于压力室。 暴露于压力室的推压活塞的压力接收面积与暴露于反应室的受压面积的比例大于暴露于反应室的输入活塞的受压面积的比率 推压活塞的压力室暴露于压力室（即A2 / A1> A3 / A2）。
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7.发明授权Pressure supply system having means for controlling an output pressure thereof 失效具有用于控制其输出压力的装置的压力供应系统
公开(公告)号：US5197787A
公开(公告)日：1993-03-30
申请号：US721802
申请日：1991-06-26
CPC分类号： B60T8/4045 , B60T17/02 , F15B1/033 , Y10S303/04
摘要： A pressure supply system for a vehicle according to the invention incorporates a pump and an accumulator in which an output pressure of the pump is maintained within a prescribed range by controlling the on-off operation of the pump according to the inner pressure of the accumulator. By changing the prescribed range of pressure according to the actual pressure requirement, for instance according to the change in the travelling speed of the vehicle, the burden on the system is reduced. The prescribed range can be changed either by simply changing the upper and/or lower pressure limits at which the pump is deactivated and activated, respectively, or by operating the pump for a prescribed time period which is dependent on the pressure requirement after a certain reference pressure value is reached. Thus, the structure of the fluid pressure system is simplified, and the generation of unnecessary high pressure can be avoided.
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8.发明授权Hydraulic braking pressure control system having an on-off valve responsive to an output hydraulic pressure 失效液压制动压力控制系统具有响应于输出液压的开关阀
公开(公告)号：US5306075A
公开(公告)日：1994-04-26
申请号：US779475
申请日：1991-10-18
CPC分类号： B60T8/4081 , B60T8/4072 , B60T8/4225 , B60T8/441 , B60T8/4863 , B60T8/94
摘要： In a hydraulic braking pressure control system comprising a brake device (B.sub.FL, B.sub.FR, B.sub.RL, B.sub.RR), hydraulic pressure controller (4) for controlling the hydraulic pressure supply source (2) in accordance with the amount of operation of an operating member (1), an auxiliary hydraulic pressure generator (3) including a working piston (16, 17) operatively connected to the operating member to advance in response to operation of the operating member and being slidably received in a housing (14) with a front surface of the working piston facing a hydraulic pressure chamber (18, 19), a hydraulic pressure transmitter (134) comprising a free piston (132) slidably received in a cylinder body (133) and having opposite ends facing an input hydraulic pressure chamber (130) connected to the hydraulic pressure controller and an output hydraulic pressure chamber (131) leading to the brake device, respectively, and an on-off valve (135) interposed between the hydraulic pressure chamber (18, 19) in the auxiliary hydraulic pressure generator (3) and the brake device and adapted to be closed in response to an increase in output hydraulic pressure from the hydraulic pressure controller, there is further included valve-opening device (136) for forcedly opening the on-off valve in response to the movement of the free piston by a predetermined distance or more in a direction to reduce the volume of the output hydraulic pressure chamber. This ensures that when an abnormality such as wear of a pad or a vapor lock is produced on the side of the brake device in a condition in which the hydraulic pressure supply source is normal, a deficiency of hydraulic pressure can be compensated for, and when a leak of fluid is produced, this can be detected promptly.
摘要翻译： 在包括制动装置（BFL，BFR，BRL，BRR）的液压制动压力控制系统中，根据操作构件（1）的操作量控制液压供给源（2）的液压控制器（4） ），辅助液压发生器（3），其包括可操作地连接到所述操作构件的工作活塞（16,17），以响应于所述操作构件的操作而前进，并且可滑动地容纳在壳体（14）中，所述壳体（14）的前表面 所述工作活塞面向液压室（18,19），液压变送器（134）包括可滑动地容纳在缸体（133）中并具有面向输入液压室（130）的相对端的自由活塞（132） 分别连接到液压控制器和通向制动装置的输出液压室（131），以及插入在所述液压压力室（18,19）之间的开闭阀（135） 锂离子液压发生器（3）和制动装置，并且响应于来自液压控制器的输出液压的增加而被关闭，还包括用于强制打开开关阀的阀开启装置（136） 响应于在减小输出液压室的容积的方向上的自由活塞的移动预定距离或更大的距离。 这样可以确保在液压供给源正常的状态下，在制动装置一侧产生诸如焊盘或蒸气锁的磨损等异常的情况下，能够补偿液压不足， 产生液体泄漏，可以及时检测。
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9.发明授权Fluid pressure control system with an accumulator responsive to a loss of system pressure 失效流体压力控制系统，具有响应于系统压力损失的蓄能器
公开(公告)号：US5291675A
公开(公告)日：1994-03-08
申请号：US973234
申请日：1992-11-10
CPC分类号： B60T8/4081 , B60T13/12 , B60T8/4225 , B60T8/441 , B60T8/4863
摘要： A fluid pressure control system which includes an operational reaction force generating device having a piston which includes a front surface facing a pressure chamber and is operatively connected to an operating member so as to reduce a volume of the pressure chamber in response to the operation of the operating member. The fluid pressure control system further includes a fluid pressure control valve capable of adjusting and outputting an output pressure from a fluid pressure supply source capable of outputting a constant fluid pressure in accordance with the operation amount of the operating member and a stroke accumulator connected to the pressure chamber. The stroke accumulator is of a structural arrangement such that the resilient biasing force acting on the accumulator piston by the movement of the back-up piston toward the accumulator piston with the abnormal reduction in fluid pressure in the pilot chamber connected to the fluid pressure supply source is increased more than the fluid pressure acting on the accumulator piston when the fluid pressure in the pilot chamber is normal. Thus, it is possible in the fluid pressure control system of this invention to prevent the amount in which the operating member operates from being increased more than necessary when the output fluid pressure from the fluid pressure supply source is abnormally reduced.
摘要翻译： 一种流体压力控制系统，其包括具有活塞的操作反作用力产生装置，所述活塞包括面向压力室的前表面并且可操作地连接到操作构件，以便响应于所述操作而减小所述压力室的体积 操作员 所述流体压力控制系统还包括流体压力控制阀，其能够根据所述操作部件的操作量和连接到所述流体压力控制系统的行程累加器，调整并输出来自能够输出恒定流体压力的流体压力供给源的输出压力 压力室。 行程蓄能器具有结构布置，使得弹性偏压力通过备用活塞朝向蓄能器活塞的运动而作用在蓄能器活塞上，导向室中连接到流体压力源的流体压力异常降低 当先导室中的流体压力正常时，其增加大于作用在蓄能器活塞上的流体压力。 因此，当来自流体压力供给源的输出流体压力异常地降低时，本发明的流体压力控制系统可以防止操作构件的操作量大于必要量。
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公开(公告)号：US5074145A
公开(公告)日：1991-12-24
申请号：US623137
申请日：1990-12-06
申请人： Kenji Hattori , Jiro Suzuki , Kazutoshi Tashima
发明人： Kenji Hattori , Jiro Suzuki , Kazutoshi Tashima
CPC分类号： B60T8/90 , B60T13/148 , B60T17/221
摘要： An apparatus for diagnosing a fault of a hydraulic pressure source, including a fluid tank, a pump for pumping up fluid from the fluid tank, an accumulator for accumulating the fluid pumped up by the pump, a pressure detector for detecting a pressure of the fluid in the accumulator and generating an output signal, a pump drive or motor responsive to the output signal for driving the pump, and an electromagnetic valve of normally closed type interposed either in a flow path between the accumulator and a hydraulic pressure instrument or in a flow path between the tank and the hydraulic pressure instrument. This apparatus comprises an excitation signal generator for generating an excitation signal which excites the electromagnetic valve for a predetermined period of time, and a control unit for determing an anomaly on the basis of the output signal from the pressure detector. If any fault exists in the hydraulic pressure source, fall and rise of the hydraulic pressure is not effected normally. The control unit determines whether the variation of the hydraulic pressure is normal or abnormal on the basis of the output signal from the pressure detector.
摘要翻译： 一种用于诊断液压源的故障的装置，包括流体箱，用于从流体箱泵送流体的泵，用于积聚由泵抽出的流体的蓄能器，用于检测流体的压力的压力检测器 在累加器中产生输出信号，响应于用于驱动泵的输出信号的泵驱动器或电动机，以及插在蓄能器和液压仪器之间的流动路径中的常闭型电磁阀或流动 油箱与液压仪表之间的路径。 该装置包括用于产生激励电磁阀预定时间段的激励信号的激励信号发生器，以及用于基于来自压力检测器的输出信号来确定异常的控制单元。 如果液压源存在任何故障，液压的下降和上升不能正常进行。 控制单元基于来自压力检测器的输出信号来判定液压的变化是正常还是异常。
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