公开(公告)号：US4971353A

公开(公告)日：1990-11-20

申请号：US432901

申请日：1989-11-07

申请人： Shuuichi Buma ,  Takashi Yonekawa ,  Toshio Onuma ,  Katsuhiko Hattori ,  Osamu Komazawa ,  Sigetaka Isogai ,  Hiroyuki Ikemoto

发明人： Shuuichi Buma ,  Takashi Yonekawa ,  Toshio Onuma ,  Katsuhiko Hattori ,  Osamu Komazawa ,  Sigetaka Isogai ,  Hiroyuki Ikemoto

IPC分类号： B60G17/04 ,  B60G23/00

CPC分类号： B60G17/04 ,  B60G2400/208 ,  B60G2400/50 ,  B60G2400/90 ,  B60G2500/40 ,  B60G2600/26 ,  B60G2600/68 ,  B60G2600/72

摘要： In a hydraulic suspension system, a plurality of actuators having working fluid chambers are provided. Each actuator is adapted to increase and decrease vehicle height as the results of the supply and the discharge of working fluid into and from its working fluid chamber, respectively. A plurality of accumulators are connected with associated working fluid chambers. Working fluid supply passages supply working fluid into the working fluid chambers and working fluid discharge passages discharge working fluid from the working fluid chambers. Pressure control devices are provided in the supply passages and the discharge passages. Each pressure control device means is adapted to control the supply of the working fluid into and the discharge from the associated working fluid chamber to adjust the pressure within the chamber. The suspension system further comprises flow resistance control devices. Each flow resistance control devices is adapted to adjust at least one of the first flow resistance between the associated working fluid chamber and the associated accumulator and the second flow resistance of the associated discharge passage in response to the flow rate of the working fluid discharging through the discharge passage so that the higher the discharging flow rate is, the higher the ratio of the second to the first flow resistances may be, not only to reduce the flow rate of the working fluid discharging from the working fluid chamber through the discharge passage but also to increase the flow rate of the working fluid flowing into the accumulator from the working fluid chamber.

公开(公告)号：US4957309A

公开(公告)日：1990-09-18

申请号：US458240

申请日：1989-12-27

申请人： Osamu Komazawa ,  Shigetaka Isogai ,  Shuuichi Buma ,  Toshio Onuma ,  Takashi Yonekawa ,  Katsuhiko Hattori

发明人： Osamu Komazawa ,  Shigetaka Isogai ,  Shuuichi Buma ,  Toshio Onuma ,  Takashi Yonekawa ,  Katsuhiko Hattori

IPC分类号： B60G17/015 ,  B60G17/033 ,  B60G17/04

CPC分类号： B60G17/04 ,  B60G17/0152 ,  B60G17/033 ,  B60G2202/15 ,  B60G2204/80 ,  B60G2400/252 ,  B60G2400/50 ,  B60G2400/51 ,  B60G2500/20 ,  B60G2600/02 ,  B60G2600/68 ,  Y10S280/01

摘要： A pressure control system for suspension delivers a pressure which is proportional to a current level chosen to energize a solenoid of a pressure control valve to a shock absorber of a suspension. A change in the pressure of a return path which supplies a low pressure to the pressure control valve causes the pressure which is applied to the suspension to change. In order to suppress such change, a junction of the pressure control valve with the return path has an orifice interposed therein or is connected to a low pressure accumulator. On the other hand, in the event a depression occurs in the output of the high pressure piping, a cut valve which functions to isolate the suspension from the pressure control valve may be temporarily cut off in response to a pressure fluctuation in the high pressure piping. In order to prevent this, an orifice is interposed between the high pressure piping and a pilot chamber of the cut valve.

公开(公告)号：US5024459A

公开(公告)日：1991-06-18

申请号：US457957

申请日：1989-12-27

申请人： Kouichi Kokubo ,  Toshiaki Hamada ,  Shinichi Tagawa ,  Nobuyasu Suzumura ,  Shuuichi Buma ,  Toshio Aburaya ,  Toshio Onuma ,  Kunihito Sato ,  Takashi Yonekawa ,  Masaki Kawanishi ,  Hiroyuki Ikemoto ,  Kaoru Ohashi

发明人： Kouichi Kokubo ,  Toshiaki Hamada ,  Shinichi Tagawa ,  Nobuyasu Suzumura ,  Shuuichi Buma ,  Toshio Aburaya ,  Toshio Onuma ,  Kunihito Sato ,  Takashi Yonekawa ,  Masaki Kawanishi ,  Hiroyuki Ikemoto ,  Kaoru Ohashi

IPC分类号： B60G17/016 ,  B60G17/017

CPC分类号： B60G17/017 ,  B60G17/016 ,  B60G2202/15 ,  B60G2204/80 ,  B60G2400/104 ,  B60G2400/106 ,  B60G2400/20 ,  B60G2400/204 ,  B60G2400/252 ,  B60G2400/30 ,  B60G2400/38 ,  B60G2400/41 ,  B60G2400/50 ,  B60G2400/51 ,  B60G2400/73 ,  B60G2500/10 ,  B60G2500/20 ,  B60G2500/30 ,  B60G2600/04 ,  B60G2600/08 ,  B60G2600/12 ,  B60G2600/14 ,  B60G2600/16 ,  B60G2600/20 ,  B60G2600/602 ,  B60G2600/68 ,  B60G2600/70 ,  B60G2800/012 ,  B60G2800/014 ,  B60G2800/22 ,  B60G2800/244 ,  B60G2800/246

摘要： A suspension pressure control system applies a pressure which is proportional to a current level supplied to a solenoid of a pressure control valve to a shock absorber associated with a suspension from the valve. When a pressure in a high pressure line which feeds a high pressure to the pressure control valve falls (rises), the pressure applied to the suspension is decreased (increased). Accordingly, the pressure in the high pressure line is detected by a sensor, and if it is low (high), the current level of the pressure control valve is corrected to a high value (low value). In order to prevent an abnormal pressure rise in the suspension which may be caused by an excessive pressure rise in the high pressure line during an idling operation of an engine, a correction which responds to the pressure of the high pressure line is chosen large when a vehicle speed is equal to zero or very low. In order to prevent an abnormality from occurring in the correction of the pressure which is attributable to an errorneous detected value during a failure of operation of sensor, such detected value is determined to be faulty, and in the event a fault occurred, the correction is modified to a given volume (0) which is allocated to a standard pressure in the high pressure line.

公开(公告)号：US5013062A

公开(公告)日：1991-05-07

申请号：US459325

申请日：1989-12-29

申请人： Takashi Yonekawa ,  Toshio Onuma ,  Shuuichi Buma ,  Hiroyuki Ikemoto ,  Kaoru Ohashi ,  Toshio Aburaya ,  Kinihito Sato

发明人： Takashi Yonekawa ,  Toshio Onuma ,  Shuuichi Buma ,  Hiroyuki Ikemoto ,  Kaoru Ohashi ,  Toshio Aburaya ,  Kinihito Sato

IPC分类号： B60G17/015 ,  B60G17/016 ,  B60G17/017

CPC分类号： B60G17/016 ,  B60G17/017 ,  B60G2202/15 ,  B60G2204/80 ,  B60G2400/104 ,  B60G2400/106 ,  B60G2400/20 ,  B60G2400/204 ,  B60G2400/252 ,  B60G2400/30 ,  B60G2400/38 ,  B60G2400/41 ,  B60G2400/50 ,  B60G2400/51 ,  B60G2400/73 ,  B60G2500/10 ,  B60G2500/20 ,  B60G2500/30 ,  B60G2600/04 ,  B60G2600/08 ,  B60G2600/12 ,  B60G2600/14 ,  B60G2600/16 ,  B60G2600/20 ,  B60G2600/602 ,  B60G2600/68 ,  B60G2600/70 ,  B60G2800/012 ,  B60G2800/014 ,  B60G2800/22 ,  B60G2800/244 ,  B60G2800/246

摘要： In a system for controlling the US-OS characteristic of a vehicle having front and rear suspensions, a device for changing the US-OS characteristic is provided which is adapted to alter the roll stiffness distribution between the front and the rear suspensions. A turning state quantity is detected and the changing rate of a turning state quantity is determined. A control device is further provided which is adapted to respond to the turning state quantity and the changing rate of the turning state quantity, and to control the US-OS characteristic changing device so that the higher the changing rate of the turning state quantity is, the more the US-OS characteristic may be shifted toward higher over-steer, and for the same changing rate the higher the turning state quantity is, the more the US-OS characteristic may be shifted toward higher under-steer.

公开(公告)号：US5119297A

公开(公告)日：1992-06-02

申请号：US484891

申请日：1990-02-26

申请人： Shuuichi Buma ,  Hiroyuki Ikemoto ,  Toshio Aburaya ,  Takashi Yonekawa ,  Kunihito Sato ,  Toshio Onuma ,  Kaoru Ohashi

发明人： Shuuichi Buma ,  Hiroyuki Ikemoto ,  Toshio Aburaya ,  Takashi Yonekawa ,  Kunihito Sato ,  Toshio Onuma ,  Kaoru Ohashi

IPC分类号： B60G17/015 ,  B60G17/016

CPC分类号： B60G17/016 ,  B60G2400/104 ,  B60G2400/106 ,  B60G2400/204 ,  B60G2400/252 ,  B60G2400/30 ,  B60G2400/304 ,  B60G2400/33 ,  B60G2400/38 ,  B60G2400/41 ,  B60G2400/50 ,  B60G2400/70 ,  B60G2400/952 ,  B60G2500/30 ,  B60G2600/02 ,  B60G2600/04 ,  B60G2600/26 ,  B60G2600/604 ,  B60G2600/72 ,  B60G2800/012 ,  B60G2800/014 ,  B60G2800/22

摘要： In a hydraulic active suspension system, a plurality of actuators having working fluid chambers are provided corresponding to vehicle wheels. Each actuator is adapted to increase or decrease vehicle height in response to the hydraulic pressure within its working fluid chamber. The hydraulic pressures within the working fluid chambers are controlled to their desired pressure by associated pressure control devices. A desired pressure computing device is further provided. The computing device calculates the actual values of roll, pitch, heave and warp of a vehicle body from the vehicle heights detected by detecting devices and calculates the differences between the actual values and the associated values of roll, pitch, heave and warp determined by a desired attitude of the vehicle body to compute the desired pressures for the actuators. The degrees of the roll and/or pitch differences are set to be higher than that of the warp difference in contributing to the determination of the desired pressures.

公开(公告)号：US5103397A

公开(公告)日：1992-04-07

申请号：US505472

申请日：1990-04-06

申请人： Hiroyuki Ikemoto ,  Shuuichi Buma ,  Toshio Aburaya ,  Takashi Yonekawa ,  Toshio Onuma ,  Tsukasa Watanabe ,  Toshiaki Hamada

发明人： Hiroyuki Ikemoto ,  Shuuichi Buma ,  Toshio Aburaya ,  Takashi Yonekawa ,  Toshio Onuma ,  Tsukasa Watanabe ,  Toshiaki Hamada

IPC分类号： B60G17/015 ,  B60G17/016 ,  B60G17/0185

CPC分类号： B60G17/016 ,  B60G17/0185 ,  B60G2400/104 ,  B60G2400/106 ,  B60G2400/204 ,  B60G2400/30 ,  B60G2400/38 ,  B60G2400/41 ,  B60G2400/50 ,  B60G2400/73 ,  B60G2600/02 ,  B60G2600/08 ,  B60G2600/20 ,  B60G2800/012 ,  B60G2800/702 ,  B60G2800/704 ,  B60G2800/80

摘要： In a hydraulic active suspension system, a plurality of actuators having working fluid chambers are provided corresponding to vehicle wheels. Each actuator is adapted to increase and decrease vehicle height in response to the pressure within its working chamber, which is controlled by a pressure control device. Vehicle speed and lateral acceleration are detected by corresponding sensors. A control device is further provided for controlling the pressure control device by compensating values determined base upon the lateral acceleration detected. The control device is adapted to reduce the compensating values in magnitude when the vehicle speed is lower than a predetermined value under which the lateral acceleration sensor sometimes detects a false lateral acceleration, thereby reducing the possibility that the vehicle body may generate an unpleasant roll due to the erroneous control on the pressures within the working fluid chambers based upon a false lateral acceleration.

公开(公告)号：US5162995A

公开(公告)日：1992-11-10

申请号：US505365

申请日：1990-04-06

申请人： Hiroyuki Ikemoto ,  Shuuichi Buma ,  Toshio Aburaya ,  Takashi Yonekawa ,  Toshio Onuma ,  Tsukasa Watanabe ,  Toshiaki Hamada

发明人： Hiroyuki Ikemoto ,  Shuuichi Buma ,  Toshio Aburaya ,  Takashi Yonekawa ,  Toshio Onuma ,  Tsukasa Watanabe ,  Toshiaki Hamada

IPC分类号： B60G17/015 ,  B60G17/016

CPC分类号： B60G17/016 ,  B60G2400/104 ,  B60G2400/106 ,  B60G2400/204 ,  B60G2400/252 ,  B60G2400/30 ,  B60G2400/38 ,  B60G2400/41 ,  B60G2400/50 ,  B60G2400/73 ,  B60G2600/02 ,  B60G2600/26 ,  B60G2600/60 ,  B60G2800/012 ,  B60G2800/014

摘要： In a hydraulic active suspension system, a plurality of actuators having working fluid chambers are provided corresponding to the vehicle wheels. Each actuator is adapted to increase and decrease vehicle height in response to the pressure within its working chamber, which is controlled by a pressure control device. Vehicle speed and vehicle heights at the locations corresponding to the vehicle wheels are detected by corresponding sensors. A control device is further provided for controlling the pressure control device so that the pressures within the working fluid chambers are driven to substantially the desired pressures, the desired pressures determined by, at least, the sum of the first control parameters corresponding to the differences between the actual vehicle heights detected and the associated desired vehicle heights and the second control parameters corresponding to the changing amounts of the vehicle height differences. The second control parameters are so set that the higher the vehicle speed is, the higher the second quantities are in magnitude, enhancing the controllability and stability of the vehicle under higher vehicle speed conditions and ensuring a greater comfortability level of the vehicle under lower vehicle speed conditions.

公开(公告)号：US5043893A

公开(公告)日：1991-08-27

申请号：US459188

申请日：1989-12-29

申请人： Toshio Aburaya ,  Shuuichi Buma ,  Takashi Yonekawa ,  Kunihito Sato ,  Masaki Kawanishi ,  Toshio Onuma ,  Hiroyuki Ikemoto ,  Kaoru Ohashi ,  Toshiaki Hamada ,  Takami Sugiyama

发明人： Toshio Aburaya ,  Shuuichi Buma ,  Takashi Yonekawa ,  Kunihito Sato ,  Masaki Kawanishi ,  Toshio Onuma ,  Hiroyuki Ikemoto ,  Kaoru Ohashi ,  Toshiaki Hamada ,  Takami Sugiyama

IPC分类号： B60G17/016 ,  B60G17/017

CPC分类号： B60G17/017 ,  B60G17/016 ,  B60G2202/15 ,  B60G2204/80 ,  B60G2400/104 ,  B60G2400/106 ,  B60G2400/20 ,  B60G2400/204 ,  B60G2400/252 ,  B60G2400/30 ,  B60G2400/38 ,  B60G2400/41 ,  B60G2400/50 ,  B60G2400/51 ,  B60G2400/73 ,  B60G2500/10 ,  B60G2500/20 ,  B60G2500/30 ,  B60G2600/04 ,  B60G2600/08 ,  B60G2600/12 ,  B60G2600/14 ,  B60G2600/16 ,  B60G2600/20 ,  B60G2600/602 ,  B60G2600/68 ,  B60G2600/70 ,  B60G2800/012 ,  B60G2800/014 ,  B60G2800/22 ,  B60G2800/244 ,  B60G2800/246

摘要： In a hydraulic active suspension system, a plurality of actuators having working fluid chambers are provided corresponding to vehicle wheels. Each actuator is adapted to increase and decrease vehicle height as the results of the supply and the discharge of working fluid to and from its working fluid chamber, respectively. Supplying and discharging devices supply working fluid to and discharge from the working fluid chamber. Vehicle height sensors detect the vehicle heights at the locations corresponding to the vehicle wheels. A control device is further provided. The control device controls the supplying and discharging devices so that the pressure within the working fluid chamber in each actuator may be a value corresponding to the sum of a basic pressure determined according to the running conditions of the vehicle and a compensating pressure determined based upon the integral value of the difference between a standard vehicle height and an actual vehicle height. When the integral value of the difference is larger in magnitude than a predeterminate value, it is reduced in magnitude by the control device so as to prevent the control with the compensating pressure from overriding the control with the basic pressure.

摘要翻译： 在液压主动悬挂系统中，对应于车轮设置有具有工作流体室的多个致动器。 每个致动器适于随着工作流体向工作流体室的供给和排出的结果分别增加和减少车辆高度。 供应和排放装置向工作流体室供应工作流体并从工作流体室排出。 车辆高度传感器在对应于车轮的位置处检测车辆高度。 还提供一种控制装置。 控制装置控制供给和排出装置，使得每个致动器中的工作流体室内的压力可以是对应于根据车辆的运行状况确定的基本压力与基于车辆的行驶状态确定的补偿压力之和的值 标准车辆高度与实际车辆高度之差的积分值。 当差值的积分值大于预定值时，其通过控制装置的幅度减小，以防止补偿压力的控制超过基本压力的控制。

公开(公告)号：US5130926A

公开(公告)日：1992-07-14

申请号：US475268

申请日：1990-02-05

申请人： Tsukasa Watanabe ,  Satoshi Naganawa ,  Shuuichi Buma ,  Toshio Aburaya ,  Takashi Yonekawa ,  Toshio Onuma

发明人： Tsukasa Watanabe ,  Satoshi Naganawa ,  Shuuichi Buma ,  Toshio Aburaya ,  Takashi Yonekawa ,  Toshio Onuma

IPC分类号： B60G17/015

CPC分类号： B60G17/015 ,  B60G2300/24 ,  B60G2400/104 ,  B60G2400/106 ,  B60G2400/204 ,  B60G2400/252 ,  B60G2400/33 ,  B60G2400/412 ,  B60G2400/44 ,  B60G2400/50 ,  B60G2400/90 ,  B60G2500/30 ,  B60G2600/02 ,  B60G2600/08 ,  B60G2600/12 ,  B60G2600/26 ,  B60G2600/604 ,  B60G2600/70 ,  B60G2600/82 ,  B60G2600/85 ,  B60G2800/0194 ,  B60G2800/22

摘要： A suspension pressure control system applies a pressure which is proportional to a current level supplied to a solenoid of a pressure control valve to a shock absorber associated with a suspension from the valve. A height and a lateral acceleration of a car body as well as a steering angular velocity are detected. A deviation of the height from a target height is calculated. The suspension pressure is adjusted responding to the deviation and a change rate thereof. Also a correction value is calculated on the basis of the lateral acceleration for adjusting the suspension pressure responding to the correction value and a change rate thereof. Proportional coefficients for converting the change rate of the deviation and the change rate of the correction value to pressures to be corrected are corresponding to the steering angular velocity.

公开(公告)号：US5031663A

公开(公告)日：1991-07-16

申请号：US503362

申请日：1990-04-03

申请人： Masahiro Fukuta ,  Osamu Komazawa ,  Tsukasa Watanabe ,  Hiroyuki Ikemoto ,  Toshio Onuma ,  Shinji Matsuda ,  Kunihito Sato

发明人： Masahiro Fukuta ,  Osamu Komazawa ,  Tsukasa Watanabe ,  Hiroyuki Ikemoto ,  Toshio Onuma ,  Shinji Matsuda ,  Kunihito Sato

IPC分类号： B60G17/056 ,  G05D16/20

CPC分类号： B60G17/056 ,  G05D16/2093 ,  B60G2400/252 ,  B60G2400/30 ,  B60G2400/50 ,  B60G2500/30 ,  B60G2600/26 ,  Y10T137/8659 ,  Y10T137/86614 ,  Y10T137/8671 ,  Y10T137/86734

摘要： A pressure control valve delivers a pressure which is proportional to a current level chosen to energize a solenoid therein to a shock absorber of a suspension. A spool in the valve has an annular groove for communicating an output port to a high pressure port or a low pressure port selectively. There are conical surfaces or inclined surfaces at edges of lands adjacent to the groove, which incline from annular surfaces of the lands toward the bottom of the groove. The inclined surfaces slow down a change of the flow rate from the high pressure port to the output port and from the output port to the low pressure port when the annular groove communicates with the high pressure port and the low pressure port respectively.