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：US4973080A

公开(公告)日：1990-11-27

申请号：US444761

申请日：1989-12-01

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

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

IPC分类号： B60G17/017

CPC分类号： B60G17/017 ,  B60G2202/15 ,  B60G2204/80 ,  B60G2400/104 ,  B60G2400/106 ,  B60G2400/204 ,  B60G2400/252 ,  B60G2400/30 ,  B60G2400/38 ,  B60G2400/41 ,  B60G2400/50 ,  B60G2400/51 ,  B60G2400/73 ,  B60G2400/90 ,  B60G2500/30 ,  B60G2600/02 ,  B60G2600/04 ,  B60G2600/08 ,  B60G2600/20 ,  B60G2600/26 ,  B60G2600/60 ,  B60G2600/70 ,  B60G2600/85 ,  B60G2800/012 ,  B60G2800/014

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 to and from its working fluid chamber, respectively. Working fluid supply passages supply working fluid at supply pressure to the working fluid chambers and working fluid discharge passages discharge working fluid from the working fluid chambers. Cut-off valves and pressure control devices are provided in the supply passages and the discharge passages. Each cut-off valve is adapted to remain in its closed position whenever the supply pressure is not more than a predetermined value. Each pressure control device is adapted to control the supply of the working fluid to and the discharge from the associated working fluid chamber to adjust the pressure within the chamber. The system further comprises devices for detecting the pressures within the working fluid chambers and a device for determining the supply pressure. The pressure control devices are controlled so that their controlling pressures may substantially be equal to the pressures within the associated working fluid chambers determined by the pressure determining devices at least until the cut-off valves are opened.

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：US5067743A

公开(公告)日：1991-11-26

申请号：US572621

申请日：1990-08-27

申请人： Kouichi Kokubo ,  Shinichi Tagawa ,  Masaki Kawanishi ,  Kunihito Sato ,  Shuuichi Buma ,  Takashi Yonekawa ,  Toshio Aburaya

发明人： Kouichi Kokubo ,  Shinichi Tagawa ,  Masaki Kawanishi ,  Kunihito Sato ,  Shuuichi Buma ,  Takashi Yonekawa ,  Toshio Aburaya

IPC分类号： B60G17/00 ,  B60G17/015 ,  B60G17/016

CPC分类号： B60G17/016 ,  B60G2202/154 ,  B60G2400/104 ,  B60G2400/106 ,  B60G2400/204 ,  B60G2400/252 ,  B60G2400/33 ,  B60G2400/34 ,  B60G2400/44 ,  B60G2400/51 ,  B60G2400/512 ,  B60G2500/30 ,  B60G2600/02 ,  B60G2600/14 ,  B60G2600/16 ,  B60G2600/26 ,  B60G2600/604 ,  B60G2600/70 ,  B60G2600/74 ,  B60G2600/76 ,  B60G2800/012 ,  B60G2800/014 ,  B60G2800/0192 ,  B60G2800/0194 ,  B60G2800/18 ,  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 through a cut valve, which cuts off a fluid path from the pressure control valve to the shock absorber when a line pressure is below a predetermined value and communicates the fluid path when the line pressure exceeds the predetermined value. An electronic controller controls the current level to maintain an attitude of a vehicle substantially constant in spite of any change of longitudinal and lateral acceleration, which are detected by acceleration sensors. In order to prevent an abrupt or abnormal change of the pressure of the shock absorber at an initiation of the pressure control of the controller when the vehicle is parking on a slope, the controller initiates the pressure control before the cut valve communicates the fluid path.

公开(公告)号：US5071158A

公开(公告)日：1991-12-10

申请号：US568161

申请日：1990-08-16

申请人： Takashi Yonekawa ,  Shuuichi Buma ,  Toshio Aburaya ,  Kunihito Sato ,  Masaki Kawanishi ,  Kouichi Kokubo ,  Takami Sugiyama ,  Toshiaki Hamada

发明人： Takashi Yonekawa ,  Shuuichi Buma ,  Toshio Aburaya ,  Kunihito Sato ,  Masaki Kawanishi ,  Kouichi Kokubo ,  Takami Sugiyama ,  Toshiaki Hamada

IPC分类号： B60G17/016

CPC分类号： B60G17/016 ,  B60G2202/154 ,  B60G2202/42 ,  B60G2204/80 ,  B60G2400/104 ,  B60G2400/106 ,  B60G2400/204 ,  B60G2400/252 ,  B60G2400/30 ,  B60G2400/33 ,  B60G2400/38 ,  B60G2400/41 ,  B60G2400/51 ,  B60G2400/71 ,  B60G2500/30 ,  B60G2600/02 ,  B60G2600/04 ,  B60G2600/14 ,  B60G2600/16 ,  B60G2600/26 ,  B60G2600/70 ,  B60G2600/74 ,  B60G2600/76 ,  B60G2800/012 ,  B60G2800/014 ,  B60G2800/019 ,  B60G2800/16 ,  B60G2800/18 ,  B60G2800/20 ,  B60G2800/22 ,  B60G2800/24

摘要： In a fluid pressure type active suspension in a vehicle such as an automobile in which a fluid pressure type actuator supporting a vehicle body from a wheel so as to be able to vary a vehicle height of the vehicle body relative to the wheel in accordance with a fluid pressure supplied in its fluid chamber is operated by a pressure control means which controls the fluid pressure supplied in the fluid chamber of the actuator according to certain control parameters including at least a rate of change of the vehicle height or an acceleration of the vehicle body, the control means is adapted to modify an actual value of the rate of change of the vehicle height or the acceleration of the vehicle body for use in the control of the fluid pressure to be less than the actual value thereof when the rate of change of the vehicle height or the acceleration of the vehicle body is greater than a threshold value therefor.

公开(公告)号：US5069475A

公开(公告)日：1991-12-03

申请号：US575553

申请日：1990-08-30

申请人： Takashi Yonekawa ,  Shuuichi Buma ,  Toshio Aburaya ,  Kunihito Sato ,  Masaki Kawanishi ,  Toshiaki Hamada ,  Shinichi Tagawa

发明人： Takashi Yonekawa ,  Shuuichi Buma ,  Toshio Aburaya ,  Kunihito Sato ,  Masaki Kawanishi ,  Toshiaki Hamada ,  Shinichi Tagawa

IPC分类号： B60G17/015 ,  B60G17/016 ,  B62D7/14

CPC分类号： B60G17/0163 ,  B60G2202/154 ,  B60G2202/42 ,  B60G2400/104 ,  B60G2400/106 ,  B60G2400/204 ,  B60G2400/252 ,  B60G2400/30 ,  B60G2400/38 ,  B60G2400/40 ,  B60G2400/41 ,  B60G2400/51 ,  B60G2400/71 ,  B60G2500/30 ,  B60G2500/40 ,  B60G2600/02 ,  B60G2600/04 ,  B60G2600/14 ,  B60G2600/20 ,  B60G2600/26 ,  B60G2600/70 ,  B60G2600/74 ,  B60G2600/76 ,  B60G2600/90 ,  B60G2800/012 ,  B60G2800/014 ,  B60G2800/24

摘要： A fluid pressure type active suspension in a vehicle such as an automobile having a four wheel steering means, including a fluid pressure type actuator provided between the vehicle body and each wheel, working fluid supply and exhaust means for supplying and exhausting a working fluid to and from each actuator, vehicle height detection means for detecting vehicle height of a portion of the vehicle body corresponding to each wheel relative to the wheel, and a control means for controlling the working fluid supply and exhaust means according to control parameters including a vehicle height detected by the vehicle height detection means, wherein the control means is adapted to modify the control of the working fluid supply and exhaust means in accordance with whether a front to rear wheel steering angle ratio of the four wheel steering means is in a same phase region or an opposite phase region so that the vehicle height is controlled to be higher or lower or the rolling control is suppressed less or more according to whether the front to rear wheel steering angle ratio is in the opposite phase region or in the same phase region, respectively.

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：US5042834A

公开(公告)日：1991-08-27

申请号：US565962

申请日：1990-08-13

申请人： Takashi Yonekawa ,  Shuuichi Buma ,  Toshio Aburaya ,  Kunihito Sato ,  Masaki Kawanishi ,  Kouichi Kokubo ,  Yutaka Iguchi

发明人： Takashi Yonekawa ,  Shuuichi Buma ,  Toshio Aburaya ,  Kunihito Sato ,  Masaki Kawanishi ,  Kouichi Kokubo ,  Yutaka Iguchi

IPC分类号： B60G17/015 ,  B60G17/016 ,  B60G17/056

CPC分类号： B60G17/016 ,  B60G2202/154 ,  B60G2202/42 ,  B60G2400/104 ,  B60G2400/106 ,  B60G2400/204 ,  B60G2400/252 ,  B60G2400/30 ,  B60G2400/38 ,  B60G2400/41 ,  B60G2400/51 ,  B60G2400/71 ,  B60G2500/30 ,  B60G2600/02 ,  B60G2600/04 ,  B60G2600/14 ,  B60G2600/16 ,  B60G2600/26 ,  B60G2600/28 ,  B60G2600/70 ,  B60G2600/74 ,  B60G2600/76 ,  B60G2800/012 ,  B60G2800/16 ,  B60G2800/24

摘要： In a fluid pressure type active suspension in a vehicle such as an automobile, having a fluid pressure type actuator supporting a vehicle body from a wheel so as to be able to vary a height of the vehicle body relative to the wheel in accordance with a fluid pressure supplied to its fluid chamber, a fluid supply passage for supplying a working fluid to the fluid chamber of the actuator, a fluid exhaust passage for exhausting the working fluid from the fluid chamber of the actuator, and a pressure control circuit including a switching-over valve traversing the fluid supply passage and the fluid exhaust passage so as to be operated by a pilot pressure to selectively connect the fluid chamber of the actuator with either the fluid supply passage or the fluid exhaust passage for controlling the fluid pressure supplied to the fluid chamber of the actuator, a variable throttle valve for generating the pilot pressure for operating the switching-over valve from the pressure of the working fluid in the fluid supply passage by releasing a part of the working fluid therefrom, and a throttle control device for controlling the variable throttle valve so as to control the pilot pressure to a target value, the pressure control circuit comprises a means for modifying the target value to be lowered when the difference between the pressure of fluid in the fluid supply passage means at an upstream side of the pressure control circuit and the target value is smaller than a certain threshold value.

公开(公告)号：US5078421A

公开(公告)日：1992-01-07

申请号：US573706

申请日：1990-08-28

申请人： Kouichi Kokubo ,  Yutaka Iguchi ,  Toshio Aburaya ,  Masaki Kawanishi ,  Kunihito Sato ,  Takashi Yonekawa ,  Shuuichi Buma

发明人： Kouichi Kokubo ,  Yutaka Iguchi ,  Toshio Aburaya ,  Masaki Kawanishi ,  Kunihito Sato ,  Takashi Yonekawa ,  Shuuichi Buma

IPC分类号： B60G17/015 ,  B60G17/00 ,  B60G17/0185 ,  G01M17/04

CPC分类号： B60G17/0185 ,  B60G2202/24 ,  B60G2400/104 ,  B60G2400/106 ,  B60G2400/204 ,  B60G2400/25 ,  B60G2400/252 ,  B60G2400/30 ,  B60G2400/33 ,  B60G2400/41 ,  B60G2400/5182 ,  B60G2500/30 ,  B60G2600/04 ,  B60G2600/08 ,  B60G2600/12 ,  B60G2600/14 ,  B60G2600/16 ,  B60G2600/20 ,  B60G2600/604 ,  B60G2600/70 ,  B60G2600/76 ,  B60G2600/82 ,  B60G2800/012 ,  B60G2800/014

摘要： A suspension pressure control system on a vehicle 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 respective one of suspensions from the valve. An electronic controller controls the current level to maintain an attitude of a vehicle substantially constant in spite of any change of longitudinal and lateral acceleration, which are detected by acceleration sensors. If a driver on the vehicle closes test indication switches TSW1 and TSW2, indicates "high" by a height indication switch HSW and rotates a steering wheel on the vehicle by B toward right, the vehicle laterally inclines such that a height of the left side of the vehicle rises up and a right side falls down responding to the rotation of the steering wheel. The inclination increases as the rotation of the steering wheel increases. The inclination decreases when the steering wheel rotates inverse direction toward the neutral position. When the steering wheel rotates beyond the neutral position toward left, the vehicle laterally inclines such that the height of the left side of the vehicle calls down and the right side rises up responding to the rotation of the steering wheel.

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.