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1. 发明授权

US4809176A System for vehicle body roll control with overshoot prevention 失效
标题翻译：车身侧倾控制系统，防止过冲
公开(公告)号：US4809176A
公开(公告)日：1989-02-28
申请号：US921468
申请日：1986-10-22
申请人： Nobutaka Oowa , Yasuji Arai , Osamu Yasuike , Hiroyuki Ikemoto , Shunichi Doi
发明人： Nobutaka Oowa , Yasuji Arai , Osamu Yasuike , Hiroyuki Ikemoto , Shunichi Doi
IPC分类号： B60G17/016 , B60G17/00
CPC分类号： B60G17/0162 , Y10S280/01
摘要： In this system for vehicle roll control, a plurality of duty radio controlled actuator assemblies are provided, one corresponding to each one of the vehicle wheels, and resiliently suspended from the vehicle body. These actuator assemblies have pressure chambers, and each is adapted to increase or decrease the vehicle height at a location corresponding to its corresponding vehicle wheel as a result of the supplying or discharging of working fluid to or from its pressure chamber. Working fluid supplying and discharging means supply working fluid to and discharge working fluid from the pressure chambers of the actuator assemblies. The system further includes means for sensing the road speed of the vehicle, and means for sensing the steering angle of the vehicle. Vehicle height detection means are also provided for sensing the heights of the vehicle above the vehicle wheels. A means for computing and control calculates the deviations of the actual detected vehicle body heights from standard vehicle body heights; when a certain condition is satisfied, it controls the working fluid supplying and discharging means according to a first duty ratio according to the deviations of the actual vehicle body heights, so as to maintain the deviations of the actual vehicle body heights within predetermined ranges; and then it controls the working fluid supplying and discharging means in the reverse order according to a second duty ratio.
摘要翻译：在这种车辆侧倾控制系统中，设有多个负责无线电控制的致动器组件，一个对应于车轮中的每一个，并且弹性地悬挂在车身上。这些致动器组件具有压力室，并且每个都适于在工作流体向其压力室供应或排出工作流体的结果时，增加或减少与其对应的车轮相对应的位置处的车辆高度。工作流体供应和排放装置向工作流体提供工作流体并从致动器组件的压力室排出工作流体。该系统还包括用于感测车辆的道路速度的装置和用于感测车辆的转向角的装置。车辆高度检测装置还用于感测车辆上方车辆的高度。计算和控制的手段计算实际检测到的车身高度与标准车身高度的偏差; 当满足一定条件时，根据实际车身高度的偏差，根据第一占空比控制工作流体供给和排出装置，以将实际车身高度的偏差保持在预定范围内; 然后根据第二占空比以相反的顺序控制工作流体供给和排出装置。

2. 发明授权

US4821191A System for vehicle height adjustment with loading deviation correction 失效
标题翻译：车辆高度调整系统，负载偏差校正
公开(公告)号：US4821191A
公开(公告)日：1989-04-11
申请号：US921450
申请日：1986-10-22
申请人： Hiroyuki Ikemoto , Yasuji Arai , Osamu Yasuike , Nobutaka Oowa , Shunichi Doi
发明人： Hiroyuki Ikemoto , Yasuji Arai , Osamu Yasuike , Nobutaka Oowa , Shunichi Doi
IPC分类号： B60G17/00 , B60G17/015 , B60G17/016
CPC分类号： B60G17/016 , B60G2202/154 , B60G2202/413 , B60G2202/414 , B60G2400/204 , B60G2400/252 , B60G2400/41 , B60G2400/44 , B60G2400/51 , B60G2400/60 , B60G2400/61 , B60G2500/30 , B60G2600/02 , B60G2600/182 , B60G2600/70 , B60G2800/16 , B60G2800/204 , B60G2800/914
摘要： In this vehicle height adjustment system, a plurality of actuator assemblies are provided, one corresponding to each one of the vehicle wheels and resiliently suspending it from the vehicle body. These actuator assemblies have pressure chambers, and each is adapted to increase or decrease the vehicle height at a location corresponding to its corresponding wheel as respective results of supplying or discharging of working fluid to or from its pressure chamber. Working fluid supply/discharge means are provided corresponding to the actuator assemblies and supply and discharge working fluid to and from their pressure chambers. Wheel loading detection means are provided for sensing parameters representative of the loadings imposed by the vehicle body on the wheels, and vehicle height detection means are provided for sensing the heights of the vehicle above the wheels. A means for computing and control controls the working fluid supply/discharge means, based on the deviations of the actual wheel heights from standard wheel heights, and carries out control adjustment of the actual wheel heights to the standard wheel heights by, at least when the vehicle speed is below a determinate value, carrying out a correction to the adjustment control of the working fluid supply/discharge means, based upon the deviations of the actual wheel loadings from standard wheel loadings, by an amount appropriate substantially to eliminate the loading deviations.
摘要翻译：在该车辆高度调节系统中，设置有多个致动器组件，一个对应于车辆车轮中的每一个并且将其从车身弹性悬挂。这些致动器组件具有压力室，并且每个都适于在对应于其对应的车轮的位置处增加或减少车辆高度，作为将工作流体供给或排出到其压力室的相应结果。工作流体供应/排出装置相应于致动器组件设置，并且将工作流体从其压力室供给和排出工作流体。提供车轮负载检测装置，用于感测代表车体对车轮施加的载荷的参数，并且提供车辆高度检测装置，用于感测车轮上方车辆的高度。基于实际车轮高度与标准车轮高度的偏差，计算和控制控制工作流体供应/排出装置的装置，并且至少当至少在车速低于确定值，基于实际车轮负载与标准车轮负载的偏差，对工作流体供给/排出装置的调节控制进行校正，基本上消除负载偏差的量。

3. 发明授权

US4821188A System for vehicle height adjustment with steering angle change rate correction 失效
标题翻译：具有转向角变化率校正的车辆高度调节系统
公开(公告)号：US4821188A
公开(公告)日：1989-04-11
申请号：US921451
申请日：1986-10-22
申请人： Hiroyuki Ikemoto , Nobutaka Oowa , Yasuji Arai , Osamu Yasuike , Shunichi Doi
发明人： Hiroyuki Ikemoto , Nobutaka Oowa , Yasuji Arai , Osamu Yasuike , Shunichi Doi
IPC分类号： B60G17/00 , B60G17/015 , B60G17/016 , B60G17/10
CPC分类号： B60G17/0162
摘要： In this vehicle height adjustment system, a plurality of actuator assemblies are provided, one corresponding to each one of the vehicle wheels and resiliently suspending it from the vehicle body. These actuator assemblies have pressure chambers, and each is adapted to increase or decrease the vehicle height at a location corresponding to its corresponding wheel as respective results of supplying or discharging of working fluid to or from its pressure chamber. Working fluid supply/discharge means are provided corresponding to the actuator assemblies and supply and discharge working fluid to and from their pressure chambers. Vehicle height detection means are provided for sensing the heights of the vehicle above the wheels. A means detects the rate of change of the steering angle of the vehicle. And a means for computing and control controls the working fluid supply/discharge means, based on the deviations of the actual wheel heights from standard wheel heights, and carries out control adjustment of the actual wheel heights to the standard wheel heights, by performing a prediction calculation of the fluctuations in wheel heights caused by vehicle rolling from the rate of change of steering angle as detected by the means for detecting the rate of change of steering angle and from the vehicle speed as detected by the vehicle speed detecting means, and by carrying out a correction to the adjustment control of the working fluid supplying and discharging means, based upon the calculation result, by an amount appropriate substantially to eliminate the wheel height fluctuations.
摘要翻译：在该车辆高度调节系统中，设置有多个致动器组件，一个对应于车辆车轮中的每一个并且将其从车身弹性悬挂。这些致动器组件具有压力室，并且每个都适于在对应于其对应的车轮的位置处增加或减少车辆高度，作为将工作流体供给或排出到其压力室的相应结果。工作流体供应/排出装置相应于致动器组件设置，并且将工作流体从其压力室供给和排出工作流体。提供车辆高度检测装置，用于感测车轮上方车辆的高度。一种装置检测车辆转向角的变化率。并且，基于实际车轮高度与标准车轮高度的偏差，计算和控制的装置控制工作流体供给/排出装置，并且通过执行预测来执行实际车轮高度对标准车轮高度的控制调整通过由车速检测装置检测到的用于检测转向角的变化率和车速的装置检测到的转向角变化率，计算车辆滚动导致的车轮高度的波动，基于计算结果，对基本上消除车轮高度波动的量进行基于工作流体供给和排出装置的调节控制的校正。

4. 发明授权

US4803627A System for vehicle body roll control detecting and compensating steering oppositely to vehicle turning direction 失效
标题翻译：用于车身侧倾控制的系统，与车辆转向方向相反地检测和补偿转向
公开(公告)号：US4803627A
公开(公告)日：1989-02-07
申请号：US17592
申请日：1987-02-24
申请人： Osamu Yasuike , Yasuji Arai , Hiroyuki Ikemoto , Nobutaka Owa , Shunichi Doi
发明人： Osamu Yasuike , Yasuji Arai , Hiroyuki Ikemoto , Nobutaka Owa , Shunichi Doi
IPC分类号： B60G17/00 , B60G17/015 , B60G17/016 , B60G21/06
CPC分类号： B60G17/0162
摘要： In this system for vehicle roll control, a plurality of actuator assemblies are provided, one corresponding to each one of the vehicle wheels and resiliently suspending it from the vehicle body. Each of these actuator assemblies is adapted to increase or decrease the vehicle height at a location corresponding to its corresponding vehicle wheel as results of control signals being supplied to it. A plurality of control means are provided corresponding to the actuator assemblies and serve to supply control signals to them. A vehicle speed detecting means senses the road speed of the vehicle, a steering angle detecting means senses the steering angle of the vehicle, and a lateral acceleration detecting means detects the lateral acceleration of the vehicle body. A means for computing and control predictingly computes the roll angle of the vehicle body from the vehicle speed sensed by the vehicle speed detecting means and the steering angle sensed by the steering angle detecting means, and controls the plurality of actuator assemblies, via the plurality of control means, in accordance with the computed roll angle, so as to reduce the rolling of the vehicle body to keep the vehicle body rolling within a determinate range. This computing and control means is further adapted to compare the direction of vehicle steering as detected by the steering angle detecting means with the direction of lateral acceleration of the vehicle body as detected by the lateral acceleration detecting means, and does not effect such controlling of the plurality of actuator assemblies, when the direction of vehicle steering is opposite to the direction of lateral acceleration of the vehicle body.
摘要翻译：在该车辆侧倾控制系统中，设置有多个致动器组件，一个对应于车轮中的每一个并且使其从车体弹性悬挂。这些致动器组件中的每一个适于在对应于其对应的车轮的位置处增加或减少车辆高度，作为向其提供的控制信号的结果。对应于致动器组件提供多个控制装置，并用于向它们提供控制信号。车速检测装置感测车辆的道路速度，转向角检测装置感测车辆的转向角，横向加速度检测装置检测车身的横向加速度。用于计算和控制的装置根据车速检测装置感测到的车速预测车身的侧倾角和由转向角检测装置检测到的转向角度，并且经由多个致动器组件控制装置，根据计算出的滚动角度，以便减少车身的滚动，使车体滚动保持在确定的范围内。该计算和控制装置还适于将由转向角检测装置检测到的车辆转向方向与由横向加速度检测装置检测到的车体横向加速度的方向进行比较，并且不影响当车辆转向的方向与车身的横向加速度的方向相反时，多个致动器组件。

5. 发明授权

US4797823A System for vehicle body roll control performing suspension hardness control 失效
标题翻译：车体滚动控制系统进行悬架硬度控制
公开(公告)号：US4797823A
公开(公告)日：1989-01-10
申请号：US921138
申请日：1986-10-21
申请人： Hiroyuki Ikemoto , Nobutaka Oowa , Yasutaka Hayashi , Shunichi Doi
发明人： Hiroyuki Ikemoto , Nobutaka Oowa , Yasutaka Hayashi , Shunichi Doi
IPC分类号： B60G17/016 , B60G17/00
CPC分类号： B60G17/0162
摘要： In this roll control system, suspension means are provided for resiliently suspending the vehicle wheels with variable hardness/softness characteristics, each suspension means including an actuator with a pressure chamber which increases or decreases wheel suspension height according to the supply or discharge of working fluid. Working fluid supply/discharge means are provided for the actuators, to supply and discharge working fluid to and from actuator pressure chambers. The road speed, the steering angle, and the actual body roll angle are detected. Means for computing and control computes a steady state vehicle body roll angle .phi..sub..infin. from the vehicle speed and steering angle, advances the phase of a signal indicative of .phi..sub..infin. to compute a compensating roll angle value .PHI..sub..infin., and then computes a difference value .phi. based upon a desired roll angle .phi..sub.a, .PHI..sub..infin., and the actual roll angle .phi..sub.t, according to the equation:.phi.=.phi..sub.a -(k1.PHI..infin.+k2.phi.t)where k1 and k2 are positive constants. The computing and control means is adapted to control the working fluid supplying and discharging means based upon .phi. when the absolute value of .phi. is larger than a predetermined value .phi..sub.1, and to control the hardness/softness characteristics of the suspension means according to the absolute value of .phi. when the absolute value of .phi. is smaller than .phi..sub.1.
摘要翻译：在该辊控制系统中，提供悬挂装置用于弹性地悬挂具有可变硬度/柔软度特性的车轮，每个悬架装置包括具有压力室的致动器，该压力室根据工作流体的供给或排放而增加或减少车轮悬挂高度。为致动器提供工作流体供应/排放装置，以将工作流体供给和排出到致动器压力室。检测道路速度，转向角度和实际车身倾斜角度。用于计算和控制的装置根据车辆速度和转向角度计算稳态车体侧倾角度phi INFINITY，使表示phi INFINITY的信号的相位前进，以计算补偿侧倾角度值PHI INFINITY，然后计算差值phi 基于期望的滚动角度phi，PHI INFINITY和实际滚动角度，根据以下等式：其中k1和k2是正常数的公式：phi = phi a-（k1 PHI INFINITY + k2 phi t）计算和控制装置适用于当phi的绝对值大于预定值phi 1时基于phi控制工作流体供给和排出装置，并且根据绝对值控制悬挂装置的硬度/柔软度特性当phi的绝对值小于phi 1时，phi的值。

6. 发明授权

US4765649A System for vehicle body roll control detecting and compensating for changes of loaded vehicle weight 失效
标题翻译：车体滚动控制系统检测和补偿车载重量变化
公开(公告)号：US4765649A
公开(公告)日：1988-08-23
申请号：US26468
申请日：1987-03-16
申请人： Hiroyuki Ikemoto , Nobutaka Oowa , Yasutaka Hayashi , Shunichi Doi
发明人： Hiroyuki Ikemoto , Nobutaka Oowa , Yasutaka Hayashi , Shunichi Doi
IPC分类号： B60G17/00 , B60G17/015 , B60G17/016 , B60G17/02
CPC分类号： B60G17/0162 , B60G2202/42 , B60G2204/80 , B60G2300/02 , B60G2300/14 , B60G2400/104 , B60G2400/106 , B60G2400/204 , B60G2400/41 , B60G2400/44 , B60G2400/60 , B60G2500/102 , B60G2500/22 , B60G2500/30 , B60G2600/02 , B60G2600/04 , B60G2600/26 , B60G2600/70 , B60G2600/82 , B60G2800/012 , B60G2800/24
摘要： In this system for vehicle roll control, a suspension device or an actuator is provided corresponding to each wheel of a vehicle, and resiliently suspends it from the vehicle body. Each such suspension device can alter its hardness or softness characteristics according to a control signal, while similarly the actuators are adapted to alter the suspended height of their wheels. A vehicle speed detecting device senses road speed, a steering angle detecting device senses steering angle, and a device detects the total vehicle body weight. A computing control device computes a predictive roll angle of the vehicle body from road speed and steering angle, and: if suspension devices are provided, controls them to be relatively hard when the absolute value of the predictive roll angle is larger than a threshold value, while controlling them to be relatively soft when the absolute value of the predictive roll angle is less than this threshold value; while, if actuators are provided, when the absolute value of the predictive roll angle is larger than a threshold value, it controls them in accordance with this predictive roll angle. Particularly, this computing device varies the threshold roll angle value according to the total vehicle body weight as detected by the weight detector, so as to decrease the threshold roll angle value along with increase of the total vehicle body weight.
摘要翻译：在该车辆侧倾控制系统中，与车辆的各车轮相对应地设置有悬挂装置或致动器，并将其从车体弹性地悬挂。每个这样的悬挂装置可以根据控制信号改变其硬度或柔软度特性，而类似地，致动器适于改变其车轮的悬挂高度。车速检测装置感测道路速度，转向角检测装置感测转向角，并且装置检测总车体重量。计算控制装置根据道路速度和转向角度来计算车体的预测侧倾角，并且，如果设置了悬架装置，则当预测侧倾角的绝对值大于阈值时，控制它们相对较硬，同时当预测滚动角度的绝对值小于该阈值时，控制它们相对较软; 而如果提供致动器，则当预测滚动角度的绝对值大于阈值时，它根据该预测滚动角度来控制它们。特别地，该计算装置根据由重量检测器检测到的总车辆体重来改变阈值滚转角度值，以便随着总车辆体重的增加而降低阈值滚动角度值。

7. 发明授权

US4693493A System for vehicle body roll control utilizing steering angle detection 失效
标题翻译：利用转向角检测车体滚动控制系统
公开(公告)号：US4693493A
公开(公告)日：1987-09-15
申请号：US921251
申请日：1986-10-21
申请人： Hiroyuki Ikemoto , Nobutaka Oowa , Yasutaka Hayashi , Shunichi Doi
发明人： Hiroyuki Ikemoto , Nobutaka Oowa , Yasutaka Hayashi , Shunichi Doi
IPC分类号： B60G17/016 , B60G17/04 , B60G11/26
CPC分类号： B60G17/0162 , B60G17/0432 , B60G2202/154 , B60G2202/413 , B60G2202/414 , B60G2202/42 , B60G2204/80 , B60G2400/104 , B60G2400/106 , B60G2400/204 , B60G2400/33 , B60G2400/41 , B60G2400/44 , B60G2500/102 , B60G2500/22 , B60G2500/30 , B60G2600/02 , B60G2600/04 , B60G2600/182 , B60G2600/184 , B60G2600/26 , B60G2600/70 , B60G2600/82 , B60G2800/012 , B60G2800/24
摘要： In this system for vehicle roll control, a plurality of actuator assemblies are provided, one corresponding to each one of the vehicle wheels and resiliently suspending it from the vehicle body. These actuator assemblies have pressure chambers, and each is adapted to increase or decrease the vehicle height at a location corresponding to its corresponding vehicle wheel as respective results of supplying or discharging of working fluid to or from its pressure chamber. A plurality of working fluid supplying and discharging valves are provided corresponding to the actuator assemblies and serve to supply working fluid to the working fluid chambers and to discharge working fluid from the working fluid chambers. A vehicle speed detector senses the road speed of the vehicle, and a steering angle detector senses the steering angle of the vehicle. A control computer computes a steady state roll angle .phi..sub..infin. of the vehicle body from the vehicle speed sensed by the vehicle speed detector and the steering angle sensed by the steering angle detector, and computes a difference value .phi. based thereon, the control computer being adapted to control the working fluid supplying and discharging valves according to the difference value .phi. when the absolute value of the difference value .phi. is larger than a determinate value.
摘要翻译：在该车辆侧倾控制系统中，设置有多个致动器组件，一个对应于车轮中的每一个并且使其从车体弹性悬挂。这些致动器组件具有压力室，并且每个都适于在对应于其对应的车轮的位置处增加或减少车辆高度，作为将工作流体供应或从其压力室排出的各自结果。多个工作流体供给和排出阀对应于致动器组件设置，用于向工作流体室供应工作流体并从工作流体室排出工作流体。车辆速度检测器检测车辆的道路速度，并且转向角检测器感测车辆的转向角。控制计算机根据由车速检测器感测到的车速和由转向角检测器感知到的转向角度来计算车体的稳态滚动角度phi INFINITY，并且基于此计算差值phi，控制计算机被适配当差值phi的绝对值大于确定值时，根据差值phi控制工作流体供给和排出阀。

8. 发明授权

US4807128A System for vehicle body roll control detecting and compensating for rapid rate of change of steering angle as during emergency steering 失效
标题翻译：用于车身侧倾控制的系统，用于检测和补偿在紧急转向期间转向角的快速变化率
公开(公告)号：US4807128A
公开(公告)日：1989-02-21
申请号：US16944
申请日：1987-02-20
申请人： Hiroyuki Ikemoto , Nobutaka Owa , Yasutaka Hayashi , Shunichi Doi
发明人： Hiroyuki Ikemoto , Nobutaka Owa , Yasutaka Hayashi , Shunichi Doi
IPC分类号： B60G17/00 , B60G17/015 , B60G17/016 , B60G11/26
CPC分类号： B60G17/0162 , B60G2202/42 , B60G2204/80 , B60G2400/104 , B60G2400/106 , B60G2400/204 , B60G2400/33 , B60G2400/41 , B60G2500/102 , B60G2500/22 , B60G2500/30 , B60G2600/02 , B60G2600/04 , B60G2600/14 , B60G2600/26 , B60G2600/70 , B60G2600/82 , B60G2800/012 , B60G2800/24
摘要： In this system for vehicle roll control, one actuator assembly is provided corresponding to each vehicle wheel and resiliently suspends it from the vehicle body. Each of these actuator assemblies is adapted to increase or decrease the vehicle height at its vehicle wheel as a result of a control signal being supplied. Control means are provided corresponding to the actuator assemblies and serve to supply control signals to them. A vehicle speed detecting means senses road speed, a steering angle detecting means senses steering angle, a means senses the rate of change of steering angle, and a means detects the actual roll angle .phi..sub.t of the vehicle body. A computing and control means computes a steady state roll angle .phi..sub..infin. of the vehicle body from the vehicle speed and the steering angle, advances the phase of a signal representative of the steady state roll angle .phi..sub..infin. to thereby compute a compensating value .PHI..sub..infin. of roll angle, computes an amendment value .phi..sub.x of roll angle in accordance with the rate of change of steering angle, computes the difference .phi. based upon the desired roll angle .phi..sub.a of the vehicle body, the compensating value .PHI..sub..infin., the amendment value .phi..sub.x, and the actual roll angle .phi..sub.t following the equation: .phi.=.phi.a- (k.sub.1 .PHI..sub..infin. +k.sub.2 .PHI.t+k.sub.3 .PHI.x), where k1, k2 and k3 are positive constants; and controls the actuator assemblies, via the control means, in accordance with the difference .phi., when the absolute value of the difference .phi. is larger than a predetermined value.
摘要翻译：在该车辆侧倾控制系统中，对应于每个车轮提供一个致动器组件，并将其从车身弹性地悬挂。这些致动器组件中的每一个适于由于提供控制信号而增加或减少其车轮上的车辆高度。对应于致动器组件提供控制装置并且用于向它们提供控制信号。车速检测装置感测道路速度，转向角检测装置感测转向角，手段感测转向角的变化率，并且装置检测车身的实际侧倾角。计算和控制装置根据车速和转向角计算车身的稳态滚动角度phi INFINITY，使代表稳态滚动角度phi INFINITY的信号的相位前进，从而计算出补偿值PHI INFINITY 根据转向角的变化率来计算侧倾角度的修正值φi，根据车身的期望的倾斜角度phi a，补偿值PHI INFINITY，修正值phi x，和实际滚动角度phi，遵循以下等式：phi = phi a-（k1 PHI INFINITY + k2 PHI t + k3 PHI x），其中k1，k2和k3是正常数; 并且当差值phi的绝对值大于预定值时，经由控制装置根据差分phi来控制致动器组件。

9. 发明授权

US06583692B2 Multiple passband filter 有权
公开(公告)号：US06583692B2
公开(公告)日：2003-06-24
申请号：US09850695
申请日：2001-05-08
申请人： Stephen C. Holme , Hiroyuki Ikemoto
发明人： Stephen C. Holme , Hiroyuki Ikemoto
IPC分类号： H01P1208
CPC分类号： H01P1/208
摘要： A filter that produces a multiple passband response as a single device. The multiple passband filter has a plurality of poles concentrated in a desired passband of the filter. A plurality of zeroes are located outside of the desired passband to form passband edges. One or more zeroes are located in a central portion of the passband to form multiple passbands within the passband edges.

10. 发明授权

US4973080A Hydraulic suspension system for a vehicle with less abrupt change in vehicle height when started 失效
标题翻译：车辆液压悬挂系统，起动时车辆高度突然变化
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.

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